Electrical device

Abstract

To provide an electrical device with improved convenience capable of adjusting a temperature in a wide range of each housing part individually.SOLUTION: In an electrical device 1, a first refrigerant pipe 45 is provided on a right side surface member 16 that constitutes a side surface of a first storage chamber 9, and a second refrigerant pipe 46 is provided on a left side surface member 17 that constitutes a side surface of the second storage chamber 10. The first refrigerant pipe 45 and the second refrigerant pipe 46 are independent from each other. An adjustment valve 47 has a first adjustment valve provided in the first refrigerant pipe 45, and a second adjustment valve provided in the second refrigerant pipe 46.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to an electrical device having a cooling or heating function. [Background technology]

[0002] Patent Document 1 discloses a storage cabinet with a cooling / heating function that has two storage compartments separated by a partition wall and can adjust the temperature of each storage compartment individually. Patent Document 2 discloses a storage cabinet with a cooling / heating switch that can cool multiple storage compartments with one compressor. Patent Document 3 discloses a refrigerator with a removable partition.

[0003] Patent Document 4 discloses an electric device capable of cooling the inside of a cabinet using a Peltier element, for example, a cooler / warmer. Patent Documents 5 and 6 disclose an electric device capable of cooling the inside of a cabinet using a compressor. Patent Documents 4 and 5 disclose a battery pack detachable from the main body as a driving source and charging the battery pack. Patent Document 5 discloses a fan for cooling a condenser. Patent Document 6 discloses a blower for cooling a condenser (heat radiator) and a control device. Patent Document 7 discloses an electric device equipped with a thermoelectric element operated by the power of a battery pack, having a warm or cold insulation space, and capable of being used outdoors by using the power of the battery pack. The warm or cold insulation cabinet of Patent Document 7 includes a DC input unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-194051 A [Patent Document 2] Japanese Patent Application Publication No. 58-173367 [Patent Document 3] JP 2013-76494 A [Patent Document 4] International Publication No. 2018-101144 [Patent Document 5] JP 2017-150700 A [Patent Document 6] JP 2015-014434 A [Patent Document 7] JP 2018-91501 A Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the cooling / heating means is disposed on the bottom surface of the storage section, and the bottom surface is cooled or heated. Therefore, while the bottom side of each storage section is easily temperature-adjusted, the upper side is difficult to adjust. The first problem is to provide an electric device that can adjust the temperature of a wide range of each storage section individually, improving convenience. In addition, the inventor discovered a problem that when multiple storage sections can be cooled with one compressor as in Patent Document 2, the flow rate of the refrigerant changes when the main body is tilted, and the temperature of the storage section deviates from the set temperature. In addition, the inventor discovered a problem that when multiple storage sections can be cooled with one compressor as in Patent Document 2, the temperature of the storage section deviates from the set temperature when trying to cool two rooms at the same time due to individual differences in the electric device (such as dimensional errors in the diameter of the refrigerant pipe or differences in length due to differences in how the refrigerant pipe is laid). In addition, the inventor discovered a problem that when the set temperatures of multiple storage sections are set to have a temperature difference, the temperature of each storage section deviates from the set temperature. A second object is to provide an electrical device that can accurately control the temperature of a plurality of housing sections even when the electrical device has such housing sections.

[0006] The present inventors have also discovered a problem that when the difference between the set temperatures of multiple storage units is equal to or greater than a predetermined value, it is difficult to make the temperature of at least one of the storage units reach the set temperature. A third problem is to provide an electric device that can reduce the risk of the temperature of the storage unit not being able to reach the set temperature.

[0007] In addition, the inventors have discovered a problem in that in an electrical device that uses a common compressor to cool multiple storage units, if the compressor drive strength when cooling only one storage unit is made the same as the compressor drive strength when cooling multiple storage units, the refrigerant may return to the compressor in liquid form. A fourth problem is to provide an electrical device that improves the lifespan of the compressor, i.e., reduces the burden on the compressor.

[0008] The removable partition plate of the refrigerator in Patent Document 3 is a single plate, and it is difficult to carry and store the partition plate. A fifth problem is to provide an electric device having a partition plate that is more convenient to carry and store.

[0009] Patent documents 4 and 5 describe that the battery pack can be charged by a built-in charging circuit, but do not consider cooling the charging circuit. Patent document 6 does not describe how to cool the condenser and control device. The sixth problem is to provide an electric device that can efficiently cool a circuit (circuit board).

[0010] The warming or cooling box of Patent Document 7 has no storage function other than the warming or cooling space, which is inconvenient when one wants to carry small items such as spare battery packs or a bottle opener. In addition, if there is no storage function other than the warming or cooling space, when a removable partition plate is used, it is inconvenient to carry the removed partition plate and to find a place to store it. The seventh problem is to provide an electrical device to which a storage function other than the warming or cooling space can be added.

[0011] When using electrical equipment in a vehicle, there is a demand for using an on-board power source. In the warming or cooling box of Patent Document 7, it is possible to input power from an on-board power source to a DC input section. However, depending on the state of the on-board power source, there are cases where the use of the on-board power source is not suitable. The eighth problem is to provide an electrical equipment that can be appropriately used between an on-board power source and a battery pack.

[0012] An object of the present invention is to provide an electric device that solves at least the first of the above problems. [Means for solving the problem]

[0013] One aspect of the present invention is an electric device comprising: a main body having a first storage chamber and a second storage chamber adjacent to each other and each having a bottom surface and a side surface, a cover that can be opened and closed relative to the main body, and a cooling mechanism having a first cooling section that cools the first storage chamber and a second cooling section that cools the second storage chamber, wherein the first cooling section is provided on at least a side surface of the first storage chamber, and the second cooling section is provided on at least a side surface of the second storage chamber. Effect of the Invention

[0014] According to the present invention, it is possible to provide an electric device that solves at least the first of the above problems. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of an electric device 1 according to an embodiment of the present invention, seen from above and in the front, with a first cover 6 open. [Diagram 2] 2 is a perspective view of the electric device 1 as viewed from the upper right front, with a partition plate 70 removed from FIG. 1. [Diagram 3] FIG. 2 is a perspective view of the electric device 1 as viewed from the front upper right with a second cover 7 open. [Figure 4] 4 is a perspective view of the electric device 1 as seen from the upper right front, with the battery pack 29 removed from FIG. 3. [Diagram 5] FIG. 2 is a perspective view of the electric device 1 as viewed from the upper right rear side. [Figure 6] FIG. [Figure 7] FIG. 2 is a plan view of the electric device 1 with the second cover 7 omitted. [Figure 8] FIG. 2 is an enlarged rear view of the electrical device 1 with the right outer box 13 omitted. [Figure 9] 1 is a schematic enlarged view of the inside of the right outer box 13 as viewed from above. FIG. [Figure 10] 3 is an explanatory diagram of how the battery box 30 is attached to the main frame 11 in the electric device 1. FIG. [Figure 11] FIG. 4 is a bottom view of the main frame 11 with the battery box 30 attached. [Figure 12] FIG. 2 is a perspective view of the electric device 1 as viewed from the right rear, with the right outer box 13 omitted. [Figure 13] FIG. 2 is a perspective view of the inside of the electric device 1 as seen from the upper right rear. [Figure 14] FIG. 2 is a front view of the inside of the electric device 1, with the heating mechanism 50 omitted. [Figure 15] 3 is an explanatory diagram for assembling the bottom member 15, the right side member 16, the left side member 17, and the rail member 18 in the electric device 1. FIG. [Figure 16] 1A is a right side view of the inside of the electric device 1 when the electric device 1 is in a horizontal position, and FIG. 1B is a right side view of the inside of the electric device 1 when the electric device 1 is in an inclined position. [Figure 17] FIG. 2 is a simplified block diagram of the mechanical configuration of the electrical device 1. [Figure 18] 10A is a right side view of the inside of the electric device of the modified example when the electric device is in a horizontal position, and FIG. 10B is a right side view of the inside of the electric device of the modified example when the electric device is in an inclined position. [Figure 19] FIG. 11 is a simplified block diagram of a mechanical configuration of an electric device according to a modified example. [Figure 20] FIG. [Figure 21] FIG. 2 is a rear view of the inside of the electrical device 1. [Figure 22] 1 is an enlarged cross-sectional view showing an overlapping portion of a right side member 16 (or a left side member 17), a first refrigerant pipe 45 (or a second refrigerant pipe 46), and a first heating mechanism 51 (or a second heating section 52) in the electric device 1. FIG. [Diagram 23] 1 is a perspective view of the left outer box 12 of the electric device 1 and its interior as viewed from the upper right rear. FIG. [Figure 24] The right side view. [Diagram 25]25(A) is a cross-sectional view taken along line AA in FIG. 24. FIG. 25(B) is an enlarged view of part B in FIG. 25(A). [Figure 26] 1 is a schematic perspective view of the bottom member 15, right side member 16, left side member 17, and rail member 18 of the electrical device 1 with the upper partition plate 71 not attached and the lower partition plate 72 attached, and with contents 79 housed therein. [Figure 27] 27A is a diagram of a partition plate 70 of the electric device 1 as viewed from a direction perpendicular to the surface, FIG. 27B is a cross-sectional view taken along line CC in FIG. 27A, and FIG. 27C is a perspective view of the partition plate 70. [Figure 28] 28(A) is a diagram of the partition plate 70 viewed from a direction perpendicular to the surface when the upper partition plate 71 and the lower partition plate 72 are separated. (B) is a cross-sectional view taken along line DD of FIG. 28(A). (C) is a perspective view of the partition plate 70 when the upper partition plate 71 and the lower partition plate 72 are separated. [Figure 29] 29A is a diagram of a partition plate 170 having a different configuration, seen from a direction perpendicular to the surface, (B) is an E-E sectional view of Fig. 29A, and (C) is a perspective view of the partition plate 170. [Diagram 30] 30(A) is a diagram of the partition plate 170 in the middle of being folded, as viewed from a direction perpendicular to the plane, (B) is a cross-sectional view taken along the line FF of FIG. 30(A), and (C) is a perspective view of the partition plate 170 in the middle of being folded. [Diagram 31] 31A is a diagram showing the partition plate 170 in a folded state as viewed from a direction perpendicular to the plane, FIG. 31B is a cross-sectional view taken along line GG in FIG. 31A, and FIG. 31C is a perspective view showing the partition plate 170 in a folded state. [Diagram 32]32(A) is an external view of the setting unit 60 of the electric device 1. FIG. 32(B) is a diagram showing an example of display of the display unit 61 of the setting unit 60 in a two-room mode in which the temperature of the first storage chamber 9 and the second storage chamber 10 are individually controlled. FIG. 32(C) is a diagram showing an example of display of the display unit 61 in a large-room only mode in which the temperature of only the first storage chamber 9 is controlled. FIG. 32(D) is a diagram showing an example of display of the display unit 61 in a small-room only mode in which the temperature of only the second storage chamber 10 is controlled. FIG. 32(E) is a diagram showing an example of display of the display unit 61 in a one-room mode in which the temperatures of the first storage chamber 9 and the second storage chamber 10 are collectively controlled. FIG. 32(F) is a diagram showing an example of display of the display unit 61 in a state in which the set temperature of the first storage chamber 9 is 0° C. and the set temperature of the second storage chamber 10 is 60° C. in the two-room mode. FIG. 32(G) is a diagram showing an example of display of the display unit 61 after the set temperature of the second storage chamber 10 is automatically changed to 50° C. when the set temperature of the first storage chamber 9 is changed to -10° C. from the state of FIG. 32(F). [Diagram 33] (A) is a table showing an example of operations on the setting unit 60, the corresponding displays, and the flow of mode switching. (B) is a table showing an example of operations on the right room temperature setting button 62 or the left room temperature setting button 63 of the setting unit 60, and the corresponding displays. (C) is a table showing an example of display in the battery remaining capacity display section 61a of the display unit 61 depending on the state of the battery pack 29. (D) is a table showing an example of display in the external power connection display section 61b of the display unit 61 depending on whether or not an external DC power source is being input. (E) is a table showing an example of display in the USB device power supply display section 61c of the display unit 61 depending on whether or not power is being supplied to the USB device. (F) is a table showing an example of display in the error display section 61d of the display unit 61 when an error occurs. [Diagram 34] FIG. 1 is a circuit block diagram of an electrical device 1. [Diagram 35] FIG. 35 is a circuit block diagram showing the internal configuration of a rotation speed setting circuit 84 of FIG. 34. [Diagram 36] 1A is a time chart showing power source selection, the voltage of the DC power source 90, and the drive current of the compressor when the DC power source 90 is a normal on-board power source. FIG. 1B is a time chart showing power source selection, the voltage of the DC power source 90, and the drive current of the compressor 41 when the DC power source 90 is a deteriorated on-board power source during operation of the electrical device 1 in a comparative example. [Figure 37]13 is a time chart of power source selection when the DC power source 90 is a deteriorated on-board power source, the voltage of the DC power source 90, the voltage of the battery pack 29a or 29b, the input voltage to the compressor drive circuit 48, and the drive current of the compressor 41, in the operation of the embodiment of the electrical device 1. [Figure 38] 4 is a flowchart showing a main routine of the electric device 1. [Figure 39] 39 is a flow chart illustrating a power source selection routine of FIG. 38. [Diagram 40] 40 is a flowchart showing a DC power supply state determination routine of FIG. 39. [Diagram 41] 4 is a flowchart showing a charging routine for the electric device 1. [Diagram 42] 11 is a flowchart showing the operation of the electrical device 1 in a large room single mode. [Diagram 43] 11 is a flowchart of the operation of the electrical device 1 in a small room alone mode. [Diagram 44] 11 is a flowchart of the operation of the electrical device 1 in a single room mode. [Diagram 45] 11 is a flowchart of the operation of the electrical device 1 in a two-room mode. [Figure 46] Graph showing the change over time in temperature of the first storage chamber 9 and the second storage chamber 10, and the rotation speed of the compressor 41 when operating in two-room mode with the set temperature of the first storage chamber 9 set at 10°C and the set temperature of the second storage chamber 10 set at -18°C. [Figure 47] Graph showing the change over time in temperature of the first storage chamber 9 and the second storage chamber 10, and the rotation speed of the compressor 41 when operating in two-room mode with the set temperature of the first storage chamber 9 set at -18°C and the set temperature of the second storage chamber 10 set at 10°C. [Figure 48] A time chart of the input voltage to the compressor 41, the rotation speed of the compressor 41, the opening and closing signals of the first regulating valve 47a and the second regulating valve 47b, the on / off of the first heating section 51 and the second heating section 52, and the temperatures of the first storage chamber 9 and the second storage chamber 10 in the two-chamber mode. [Figure 49] 46 is a flowchart showing the operation of the two-room mode in which an alternating operation mode is added to the two-room mode of FIG. 45. [Figure 50] FIG. 50 is an explanatory diagram of a specific example of decision 1 (S521) in FIG. 49. [Figure 51] FIG. 50 is an explanatory diagram of a specific example of decision 2 (S522) in FIG. 49. [Figure 52] FIG. 54 is an explanatory diagram of a specific example of decision 3 (S80) in FIG. 53. [Figure 53] 50 is a flowchart showing a first pattern of the alternating operation mode (S523) of FIG. 49. [Figure 54] 50 is a flowchart showing a second pattern of the alternating operation mode (S523) of FIG. 49. [Figure 55] Graph (part 1) showing the changes over time in temperature of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when the set temperatures of the first storage chamber 9 and the second storage chamber 10 are both set to -18°C in two-room mode and operation is performed with a transition from simultaneous operation mode to alternating operation mode. [Figure 56] Graph (part 2) showing the changes over time in temperature of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when the set temperatures of the first storage chamber 9 and the second storage chamber 10 are both set to -18°C in the two-room mode and operation is performed with a transition from simultaneous operation mode to alternating operation mode. [Figure 57] 13 is a graph showing the change over time in temperature of the first storage chamber 9 and the second storage chamber 10, and the rotation speed of the compressor 41 when the set temperature of the first storage chamber 9 is set to -18°C, the set temperature of the second storage chamber 10 is set to -5°C in the two-room mode, and operation is performed with a transition from simultaneous operation mode to alternating operation mode. [Figure 58] 13 is a graph showing the changes over time in temperature of the first storage chamber 9 and the second storage chamber 10, and in the rotation speed of the compressor 41, when the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C in the two-chamber mode, and the cooling of the second storage chamber 10 by the compressor 41 is stopped based on the temperature of the second storage chamber 10. [Figure 59]1 is a graph showing the temperature of the first storage chamber 9 and the second storage chamber 10 and the change over time in the rotation speed of the compressor 41 when the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C in the two-chamber mode, and the stop of cooling of the second storage chamber 10 by the compressor 41 is controlled based on the time from the start of cooling. [Figure 60] 46 is a flowchart showing the operation of the two-room mode in which time control is added to the two-room mode of FIG. 45. [Figure 61] 1A is a waveform diagram of the drive current of the compressor 41 before and after restarting operation when the compressor 41 is controlled to operate, stop for one minute, and restart, and FIG. 1B is a waveform diagram of the drive current of the compressor 41 before and after restarting operation when the compressor 41 is controlled to operate, stop for two minutes, and restart. [Figure 62] Graph showing the change over time in temperature of the first storage chamber 9 and the second storage chamber 10, and in the rotation speed of the compressor 41, when the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C in the two-chamber mode, and the second storage chamber 10 is cooled by the compressor 41 by repeatedly operating for 1 minute and stopping for 2 minutes. [Figure 63] FIG. 2 is a perspective view of a main part of the electric device 1 with a storage unit (additional part) 200 attached to the right side surface. [Figure 64] (A) is a front view of the main part, and (B) is a right side view. [Figure 65] 1A is a plan view of the main part, and FIG. [Figure 66] 66(A) is a front cross-sectional view of the main part (a cross-sectional view taken along line HH of FIG. 66(B)). FIG. 66(B) is a view of FIG. 64(B) with the bag 201 removed. [Figure 67] (A) is a perspective view of the storage unit 200 with the bag 201 in an open state, (B) is a perspective view of the storage unit 200 with the bag 201 in a closed state, (C) is a perspective view of the storage unit 200 from the back, and (D) is a perspective view of the storage unit with the bag 201 replaced with the bag 201A. [Figure 68] Six-sided views of storage unit 200. [Figure 69]6A and 6B are six-sided views of the holder portion of the storage unit 200. [Figure 70] 6A and 6B are views of a bag 201 of a storage unit 200. [Figure 71] FIG. 2 is a perspective view of the electric device 1 to which the storage unit 200, accessory compartments 231 to 233, and an S-hook 237 are attached. [Figure 72] FIG. 64 is a perspective view of the electric device 1 in which a small item storage compartment 231 is attached instead of the storage unit 200 in FIG. 63. [Figure 73] 1 is a top perspective view of a main part of an electric device 1 with a storage unit (additional part) 250 attached to a movable handle 20. FIG. [Figure 74] FIG. [Figure 75] FIG. 11 is a perspective view of an electric device 1A having a storage unit (additional portion) 300 attached to the front surface thereof according to another embodiment of the present invention. [Figure 76] FIG. 76 is a diagram showing the bag 301 removed from FIG. 75. [Figure 77] 1 is a front perspective view of an electric device 1A having a storage unit 200 attached to the right side, a storage unit 300 attached to the front, and a storage unit (additional part) 400 attached to the rear. [Figure 78] FIG. [Figure 79] FIG. 1 is a front perspective view of an electric device 1A having a storage unit (additional part) 500 attached to its upper surface. [Figure 80] FIG. [Figure 81] FIG. 79 with the bag 501 removed. [Figure 82] FIG. 11 is a perspective view of an electric device 1B according to still another embodiment of the present invention. [Figure 83] FIG. 13 is a perspective view of the inside of the electric device in a state in which the accommodation chamber 8 is divided into three by partition plates 70a and 70b (three-room mode), as viewed from the front upper right. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] In the following, the same or equivalent components, members, etc. shown in each drawing are given the same reference numerals, and duplicated explanations are omitted as appropriate. The embodiments are illustrative and do not limit the invention. All features and combinations thereof described in the embodiments are not necessarily essential to the invention.

[0017] This embodiment relates to an electric appliance 1. The electric appliance 1 is a portable refrigerator / warmer with cooling and heating functions. Each of the mutually orthogonal front-rear, up-down, and left-right directions of the electric appliance 1 is defined with reference to Fig. 1 and other figures. The front-rear direction is the depth direction (short side direction) of the electric appliance 1, the left-right direction is the width direction (longitudinal direction) of the electric appliance 1, and the up-down direction is the height direction of the electric appliance 1.

[0018] The electric device 1 includes a main body 2. The main body 2 has a first main body portion 3 and a second main body portion 4 separate from the first main body portion 3. The first main body portion 3 and the second main body portion 4 are aligned in the left-right direction. The second main body portion 4 is located outside and to the right of the first main body portion 3.

[0019] The first main body 3 has a left outer box 12. The left outer box 12 is, for example, a resin molded body that is a substantially rectangular parallelepiped with an open upper portion, and constitutes the exterior of the first main body 3. The second main body 4 has a right outer box 13. The right outer box 13 is, for example, a resin molded body that is a substantially rectangular parallelepiped with an open upper and left portion, and constitutes the exterior of the second main body 4. The right outer box 13 is fixed and integrated with the right side surface of the left outer box 12 by screwing or the like.

[0020] The main body 2 has a main frame 11. The main frame 11 is, for example, a resin molded body. The main frame 11 is a frame body that spans the upper parts of the first main body portion 3 and the second main body portion 4, and has openings 11c and 11d that respectively correspond to the first main body portion 3 and the second main body portion 4, as shown in FIG.

[0021] The electric device 1 includes a cover 5. The cover 5 is provided on the upper part of the main body 2 and can be opened and closed relative to the main body 2. The cover 5 has a first cover 6 that opens and closes the first main body part 3, and a second cover 7 that opens and closes the second main body part 4 (opens and closes the battery pack storage chamber 22).

[0022] As shown in FIG. 5 etc., the first cover 6 is rotatably connected to the rear end of the main frame 11 by a first hinge mechanism 25. The first cover 6 has a handle 6a. A user can release the lock of the first cover 6 with respect to the main frame 11 by rotating the handle 6a of the first cover 6 in the closed state shown in FIG. 3 forward, and then hold the handle 6a to open the first cover 6 as shown in FIG. 1.

[0023] As shown in FIG. 5 etc., the second cover 7 is rotatably connected to the rear end of the main frame 11 by a second hinge mechanism 26. The second cover 7 has a handle 7a. A user can release the lock of the second cover 7 by rotating the handle 7a of the second cover 7 in the closed state shown in FIG. 1 upward, and then hold the handle 7a to open the second cover 7 as shown in FIG. 3.

[0024] The electric device 1 has a pair of left and right handles 21, and also has a plurality of (for example, four) legs 35 on the bottom as ground contact parts. A user can move the electric device 1 by holding the left and right handles 21 and lifting it up.

[0025] The electric device 1 has casters 19 and a movable handle (carry handle) 20. The casters 19 are provided at the front and rear of the lower right part of the main body 2, respectively. The rotation axis direction of the casters 19 is parallel to the left-right direction. The movable handle 20 is rotatably provided on the left side surface of the main body 2. The rotation axis direction of the movable handle 20 is parallel to the left-right direction. A user can move the electric device 1 using the casters 19 by rotating the movable handle 20 upward and holding the movable handle 20 to lift the left part of the main body 2 off the ground.

[0026] The electric device 1 has a USB terminal 27 and a power input terminal 28 on the second main body portion 4. The electric device 1 can supply charging power to a device connected to the USB terminal 27. The electric device 1 can input DC power from the outside via the power input terminal 28. The electric device 1 operates using the DC power or power from a battery pack 29.

[0027] The first main body portion 3 has a storage chamber (storage section) 8. The storage chamber 8 has a first storage chamber 9 which is a large room and a right room, and a second storage chamber 10 which is a small room and a left room. The first storage chamber (first storage section) 9 and the second storage chamber (second storage section) 10 are adjacent to each other and separated (partitioned) by a removable partition plate 70.

[0028] The first main body 3 has a bottom surface member 15, a right side surface member 16, a left side surface member 17, and a rail member 18 shown in FIG. 15 etc., which are components of the storage chamber 8. The bottom surface member 15 is, for example, a resin molded body, and forms the bottom surface of the storage chamber 8. The right side surface member 16 and the left side surface member 17 are each made of metal such as aluminum (metal plate) and are U-shaped when viewed from the top and bottom direction. The right side surface member 16 forms the side surface of the first storage chamber 9. The left side surface member 17 forms the side surface of the second storage chamber 10.

[0029] The first side surface 9a of the first storage chamber 9 is the right side surface of the first storage chamber 9 and is the side surface farthest from the second storage chamber 10. The second side surface 9b of the first storage chamber 9 is the front and back surfaces of the first storage chamber 9 and is connected to the first side surface 9a. The first side surface 10a of the second storage chamber 10 is the left side surface of the second storage chamber 10 and is the side surface farthest from the first storage chamber 9. The second side surface 10b of the second storage chamber 10 is the front and back surfaces of the second storage chamber 10 and is connected to the first side surface 10a.

[0030] 15 and 25(B), the right side member 16 has outwardly bent portions 16a at a pair of left ends, and the left side member 17 has outwardly bent portions 17a at a pair of right ends. The outwardly bent portions 16a, 17a each extend in the up-down direction.

[0031] The pair of rail members 18 each have grooves 18c and 18d into which the outer bent portions 16a and 17a are fitted (engaged). The rail member 18 is fixed and integrated with the right side member 16 and the left side member 17 (to the outer bent portions 16a and 17a) by screwing or the like with the outer bent portions 16a and 17a fitted into the grooves 18c and 18d. That is, the rail member 18 also serves to connect the right side member 16 and the left side member 17. The rail member 18 has a notch 18a for screwing to the main frame 11. The notch 18a communicates with the boss 11b (FIG. 11) of the main frame 11. The rail member 18 is fixed to the main frame 11 by a screw (not shown) that passes through the notch 18a and is screwed into the boss 11b.

[0032] The rail member 18 has a recess (recess) 18b extending in the vertical direction. The recess 18b constitutes a recess on the inner surface of the storage chamber 8, and serves as a guide when attaching and detaching the partition plate 70. The front rail member 18 does not protrude rearward beyond the inner front surfaces of the right side member 16 and the left side member 17, i.e., the inner front surface of the storage chamber 8. The rear rail member 18 does not protrude forward beyond the inner rear surfaces of the right side member 16 and the left side member 17, i.e., the inner rear surface of the storage chamber 8.

[0033] The combined right side member 16, left side member 17, and rail member 18 are fitted into the bottom member 15 from above to form the inner box of the first main body portion 3. A heat insulating material (not shown) is filled between this inner box and the left outer box 12. This heat insulating material hardens after filling, so it fixes the inner box to the left outer box 12 and also serves to fix the main frame 11.

[0034] As shown in FIG. 15, the electric device 1 includes a first thermistor 55 as a first temperature sensor and a first holder 57 for holding the first thermistor, and a second thermistor 56 as a second temperature sensor and a second holder 58 for holding the first thermistor. The first holder 57 is fixed to the approximate center of the right side surface of the right side surface member 16 by screwing or the like. The first thermistor 55 detects the temperature inside the right side surface member 16, i.e., the temperature inside the first housing chamber 9. The second holder 57 is fixed to the approximate center of the left side surface member 17 by screwing or the like. The second thermistor 56 detects the temperature inside the left side surface member 17, i.e., the temperature inside the second housing chamber 10. The electric device 1 may include a third temperature sensor for detecting the temperature outside the first housing chamber 9 and the second housing chamber 10, i.e., the outside air temperature.

[0035] The second main body portion 4 has a battery pack accommodating chamber 22 as shown in Fig. 4. The battery pack accommodating chamber 22 has two battery pack attachment portions 22a (battery pack connection portions). A battery pack 29 can be detachably attached (connected) to each battery pack attachment portion 22a as shown in Fig. 3. The battery pack 29 is, for example, a battery pack for a power tool having a rated output voltage of 18V. The battery pack accommodating chamber 22 is a space formed by a battery box 30 and a battery terminal 31 shown in Fig. 10 etc.

[0036] The battery box 30 is, for example, a resin molded body. The battery terminal 31 is, for example, a resin molded body that holds a connection terminal with the battery pack 29. The battery box 30 is inserted from above into an opening 11d of the main frame 11 as shown in Fig. 10, and fixed to the main frame 11 by screwing. As shown in Fig. 11, the battery box 30 has bosses 30a for screwing to the main frame 11. A drain hole 30b is provided on the bottom surface of the battery box 30.

[0037] As shown in FIG. 14, the electric device 1 includes a cooling mechanism 40. The cooling mechanism 40 can cool the accommodation chamber 8 by DC power input from the outside via the power input terminal 28 or by power from the battery pack 29. The cooling mechanism 40 includes a compressor 41 as a cooler, a condenser 42, a refrigerant pipe 44, and an adjustment valve 47. The cooling mechanism 40 is provided in the second body 4, except for a large part of the refrigerant pipe 44 that extends into the first body 3. The condenser 42 is provided on the inner wall surface of the second body 4 on the side opposite to the first body 3, that is, close to the inner surface of the right side surface of the right outer box 13, and there is a space between the condenser 42 and the right side surface of the left outer box 12.

[0038] The compressor 41 is an output part of the electric device 1, and has a motor. The compressor compresses the refrigerant and discharges it as a high-temperature, high-pressure gas. The condenser 42 releases heat from the refrigerant discharged from the compressor 41 and discharges the refrigerant as a liquid. The refrigerant pipe 44 forms a path through which the refrigerant discharged from the condenser 42 passes around the accommodation chamber 8 and returns to the compressor 41. As the refrigerant passes around the accommodation chamber 8, it absorbs heat from the accommodation chamber 8 and evaporates, becoming a gas. The adjustment valve 47 is provided in the refrigerant pipe 44, in the middle of the refrigerant returning from the periphery of the accommodation chamber 8 to the compressor 41, i.e., in the portion where the refrigerant flows in a gaseous state.

[0039] The refrigerant pipe 44 has a first refrigerant pipe 45 as a first cooling section and a second refrigerant pipe 46 as a second cooling section. The refrigerant pipe 44 extends as a single pipe into the first main body section 3, and as shown in FIG. 13, it is divided into two pipes, that is, the first refrigerant pipe 45 and the second refrigerant pipe 46, at a branching section 44a near the back surface of the right side member 16. That is, the refrigerant pipe 44 extends as a single pipe to the branching section 44a near the boundary (rail 18) between the first storage chamber 9 and the second storage chamber 10. As a result, the surface area of ​​the refrigerant pipe that comes into contact with the outside air is smaller than when the refrigerant pipe is branched near the condenser, and unnecessary temperature rise of the refrigerant can be suppressed, so that the storage chamber can be cooled more efficiently. The refrigerant pipe that forms a path from the adjustment valve 47 to the suction section of the compressor 41 is an example of the third cooling section, and the refrigerant pipe that forms the path from the discharge section of the compressor 41 to the branching section 44a is an example of the fourth cooling section.

[0040] The first refrigerant pipe 45 is provided on at least the side surface of the first storage chamber 9 to cool the first storage chamber 9. The first refrigerant pipe 45 is provided on at least the first side surface 9a, preferably on the first side surface 9a and the second side surface 9b. The second refrigerant pipe 46 is provided on at least the side surface of the second storage chamber 10 to cool the second storage chamber 10. The second refrigerant pipe 46 is provided on at least the first side surface 10a, preferably on the first side surface 10a and the second side surface 10b. The first refrigerant pipe 45 and the second refrigerant pipe 46 are independent of each other. That is, the first refrigerant pipe 45 is provided to mainly cool the first storage chamber 9, and the second refrigerant pipe 46 is provided to mainly cool the second storage chamber 10.

[0041] The first refrigerant pipe 45 extends along the right side member 16 from the left end of the rear surface of the right side member 16 to the center of the right side of the right side member 16 in the front-rear direction, turns back from there and extends to the left end of the rear surface of the right side member 16, repeating this round trip three times, then extends from the left end of the rear surface of the right side member 16 to the left end of the front surface of the right side member 16, further extends from the left end of the front surface of the right side member 16 to the center of the right side of the right side member 16 in the front-rear direction, turns back from there and extends to the left end of the front surface of the right side member 16, repeating this round trip three times, and then forms a path leading to the regulating valve 47. A gas reservoir 45a is provided immediately before the regulating valve 47 to temporarily store the expanded refrigerant before returning to the compressor.

[0042] The second refrigerant pipe 46 extends from the right end of the rear surface of the left side surface member 17 to the center of the left side surface of the left side surface member 17 in the front-rear direction, turns back from there and extends to the right end of the rear surface of the left side surface member 17 three times, then extends from the right end of the rear surface of the left side surface member 17 to the right end of the front surface of the left side surface member 17, and further extends from the right end of the front surface of the left side surface member 17 to the center of the left side surface of the left side surface member 17 in the front-rear direction, turns back from there and extends to the right end of the front surface of the left side surface member 17 three times, and then forms a path leading to the regulating valve 47. Just before the regulating valve 47, a gas reservoir 46a is provided to temporarily store the expanded refrigerant before returning to the compressor. Here, the gas reservoir 45a and the gas reservoir 46a are examples of a storage unit.

[0043] As shown in FIG. 15, at least a part of the first refrigerant pipe 45 is integrally provided on the right side member 16, and at least a part of the second refrigerant pipe 46 is integrally provided on the left side member 17. That is, the right side member 16 and the left side member 17 are of the refrigerant pipe integrated type.

[0044] The regulating valve 47 is connected to the first refrigerant pipe 45 and the second refrigerant pipe 46, and can individually adjust (open and close) the flow of the refrigerant in the first refrigerant pipe 45 and the second refrigerant pipe 46. The regulating valve 47 includes a first regulating valve 47a provided in the first refrigerant pipe 45 to adjust the flow of the refrigerant in the first refrigerant pipe 45, and a second regulating valve 47b provided in the second refrigerant pipe 46 to adjust the flow of the refrigerant in the second refrigerant pipe 46. For example, by opening only the first regulating valve 47a, the refrigerant flows through the first refrigerant pipe 45 as a path, so that the first storage chamber 9 can be cooled. This is because a difference (P1 < P2) occurs between the internal pressure (P1) of the refrigerant pipe 45 and the internal pressure (P2) of the refrigerant pipe 46 at the branch portion 44a. Also, when it is desired to cool both the first storage chamber 9 and the second storage chamber 10, by opening both the first regulating valve 47a and the second regulating valve 47b, the refrigerant flows through the first refrigerant pipe 45 and the second refrigerant pipe 46 as paths, so that both the first storage chamber 9 and the second storage chamber 10 can be cooled. Here, the regulating valve 47 is assumed to have the functions of the first regulating valve 47a and the second regulating valve 47b in a single form, but the first regulating valve 47a and the second regulating valve 47b may be separate from each other. The first regulating valve 47a and the second regulating valve 47b are, for example, solenoid valves.

[0045] Providing the first and second regulating valves 47a and 47b in the portions of the first and second refrigerant pipes 45 and 46 where the refrigerant flows in a gaseous state contributes to suppressing imbalance in the amount of refrigerant flowing through the first and second refrigerant pipes 45 and 46 when the electrical device 1 is inclined. This is because the refrigerant is light in a gaseous state, so even if there is a difference in height between the positions of the first and second regulating valves 47a and 47b, the flow of the refrigerant is unlikely to be biased. Figures 16(A) and 16(B) visually show that the flow of the refrigerant is unlikely to be biased whether the electrical device 1 is horizontal or inclined. Note that in Figures 16(A) and 16(B), the first and second regulating valves 47a and 47b are illustrated as separate bodies.

[0046] On the other hand, unlike this embodiment, as shown in Figs. 18(A) and (B), a configuration in which the first regulating valve 147a and the second regulating valve 147b are provided in the portions of the first refrigerant pipe 45 and the second refrigerant pipe 46 through which the refrigerant flows in a liquid state can also be considered. The configuration of the electric device according to this modification is fine when the device is in a horizontal state as shown in Fig. 18(A), but when the device is in an inclined state, as shown in Fig. 18(B), the flow of the refrigerant becomes uneven. This is because the refrigerant is heavy in a liquid state, and the height difference between the positions of the first regulating valve 147a and the second regulating valve 147b affects the flow of the refrigerant. For this reason, when using the electric device 1 in an inclined state is assumed, the configuration of the electric device 1 according to this embodiment is preferable.

[0047] In the electric device 1, as shown in Fig. 17, the refrigerant in a gaseous state discharged from the compressor 41 passes through the condenser 42 and the capillary tube 43, flows in a liquid state into the refrigerant tube 44, branches into the first refrigerant tube 45 and the second refrigerant tube 46, absorbs heat from the first storage chamber 9 and the second storage chamber 10, and vaporizes, passes through the first adjustment valve 47a and the second adjustment valve 47b in a gaseous state, and returns to the compressor 41. On the other hand, in the electric device of the modified example shown in Figs. 18(A) and (B), as shown in Fig. 19, the refrigerant in a gaseous state discharged from the compressor 41 passes through the condenser 42 and the capillary tube 43, passes through the first adjustment valve 147a and the second adjustment valve 147b in a liquid state, and flows into the refrigerant tube 44, branches into the first refrigerant tube 45 and the second refrigerant tube 46, absorbs heat from the first storage chamber 9 and the second storage chamber 10, and vaporizes, and returns to the compressor 41 in a gaseous state.

[0048] As shown in Figs. 8, 12, etc., the electric device 1 has a fan 49. The fan 49 is provided inside the right outer case 13. That is, the fan 49 is housed in the second main body portion 4. The fan 49 generates fan wind that cools the cooling mechanism 40 (particularly the condenser 42) and a control circuit board 80 described below. An intake port 23 for taking in the fan wind is provided on the front surface of the right outer case 13. An exhaust port 24 for discharging the fan wind is provided on the rear surface of the right outer case 13. The fan wind flows in the front-rear direction from the intake port 23 to the exhaust port 24. The intake and exhaust front-rear relationship may be reversed.

[0049] As shown in Fig. 8, Fig. 12, etc., the electric device 1 includes a control circuit board 80. The control circuit board 80 is fixed by screws to a boss 12a provided on the outer surface of the right side surface of the left outer case 12 (the boundary wall surface between the first body portion 3 and the second body portion 4), and is located inside the right outer case 13 in a state substantially perpendicular to the left-right direction. That is, the control circuit board 80 is housed in the second body portion 4. The control circuit board 80 is equipped with an internal circuit surrounded by a dashed line in Fig. 34, and has a function of controlling the cooling mechanism 40 and a function of controlling charging of the battery pack 29. The charging here refers to charging the battery pack 29 attached to the battery pack attachment portion 22a with DC power from the outside via the power input terminal 28.

[0050] As shown in Figures 8, 9, 12, etc., the electric device 1 includes a branching section 32. The branching section 32 branches the fan wind into a first air passage 33 that cools the cooling mechanism 40 (particularly the condenser 42) and a second air passage 34 that is separate from the first air passage 33 and cools the control circuit board 80. The branching section 32 is a plate-shaped section that extends downward from the bottom surface of the battery pack accommodating chamber 22 and is approximately perpendicular to the left-right direction. The branching section 32 is preferably integrated with the battery box 30.

[0051] As shown in Figs. 20 to 22, the electric device 1 includes a heating mechanism 50 capable of heating the first storage chamber 9 and the second storage chamber 10. The heating mechanism 50 includes a first heating section 51 and a second heating section 52. The first heating section 51 is provided on the outer surface of the right side member 16 (the outer surface of the first storage chamber 9) and is capable of heating the first storage chamber 9. The second heating section 52 is provided on the outer surface of the left side member 17 (the outer surface of the second storage chamber 10) and is capable of heating the second storage chamber 10. The first heating section 51 and the second heating section 52 are, for example, wire heaters, and are provided so as to cover the first refrigerant pipe 45 and the second refrigerant pipe 46, respectively. In addition, if one heating section or one refrigerant pipe is arranged to cover the entire storage chamber and a rail member is provided, it is necessary to arrange the heating section and the refrigerant pipe so as to avoid the rail member 18. As a result, the distance between the heating section or the refrigerant pipe and the accommodation chamber 8 increases, and there is a possibility that the heating and cooling properties may deteriorate. However, in the present embodiment, the first heating section 51 and the second heating section 52 and the first refrigerant pipe 45 and the second refrigerant pipe 46 are each separated, and the rail member 18 is disposed at the separated portion. Therefore, it is not necessary to increase the distance between the first heating section 51 and the second heating section 52 and the first refrigerant pipe 45 and the second refrigerant pipe 46 and the accommodation chamber 8, and it is therefore possible to provide an electrical device in which the partition plate 70 can be attached and detached while maintaining the heating and cooling properties.

[0052] The electric device 1 includes a partition plate 70. As shown in Fig. 1, the partition plate 70 divides the accommodation chamber 8 into a first accommodation chamber 9 and a second accommodation chamber 10 when attached to the main body 2. A user can attach and detach the partition plate 70 to and from the accommodation chamber 8 along the recessed portion 18b of the rail member 18 (Fig. 25(B)).

[0053] As shown in Figs. 27(A)-(C) and 28(A)-(C), the partition plate 70 can be divided into an upper partition plate 71 and a lower partition plate 72. As shown in Figs. 27(B) and 28(B), the upper partition plate 71 and the lower partition plate 72 each have a heat insulating material 74 in their internal space (the heat insulating material 74 is filled in their internal space). The joint 73 between the upper partition plate 71 and the lower partition plate 72 has a spigot structure. That is, the upper partition plate 71 and the lower partition plate 72 partially overlap in the vertical direction, and the overlapping portions are close to or in contact with each other in the direction perpendicular to the surface. The heat insulating material 74 extends inside the spigot structure. The partition plate 70 removed from the storage chamber 8 can be stored in a storage section (not shown) detachably provided in the main body 2. The storage section can store not only the partition plate 70 but also batteries, a smartphone, etc., and is sized to accommodate at least the partition plate 70 in its divided state.

[0054] When the upper partition plate 71 and the lower partition plate 72 are combined with each other and attached to the main body 2 (storage chamber 8), they function as a heat insulator (heat insulating wall) between the first storage chamber 9 and the second storage chamber 10. When the lower partition plate 72 is attached to the storage chamber 8 alone without being combined with the upper partition plate 71, as simply shown in Fig. 26, they function as a wall to prevent scattering of the contents 79 stored in the storage chamber 8.

[0055] 29(A)-(C) and 30(A)-(C) show the configuration of a partition plate 170 that can be attached to the storage chamber 8 in place of the partition plate 70. The partition plate 170 has an upper partition plate 171 and a lower partition plate 172. The upper partition plate 171 and the lower partition plate 172 are connected to each other by a hinge mechanism 175 and are configured to be foldable. The internal spaces of the upper partition plate 171 and the lower partition plate 172 are filled with a heat insulating material 174. A joint 173 between the upper partition plate 171 and the lower partition plate 172 has a spigot structure. The heat insulating material 174 extends inside the spigot structure.

[0056] The electric device 1 includes a setting unit 60. The setting unit 60 is provided at the upper right front end of the main body 2 and faces in the upper front direction. The user can set the temperature of the first storage chamber 9 and the second storage chamber 10 individually by using the setting unit 60. For example, the user can set one of the first storage chamber 9 and the second storage chamber 10 to freezing and the other to refrigeration or room temperature, or set one to freezing or refrigeration and the other to heating or room temperature, or set one to strong heating and the other to weak heating or room temperature. The partition plate 70 (or the partition plate 170) suppresses the transfer of heat between the first storage chamber 9 and the second storage chamber 10 when the set temperatures of the first storage chamber 9 and the second storage chamber 10 are different. In other words, by attaching the partition plate 70 (or the partition plate 170), the first storage chamber 9 and the second storage chamber 10 can be controlled to different temperatures.

[0057] As shown in Fig. 32(A), the setting unit 60 has a display unit 61, a right room temperature setting button 62, a left room temperature setting button 63, a mode switching button 64 (room switching button), a power button 65, a USB device power switching button 66, and an execute button 67. The display unit 61 includes a battery remaining capacity display unit 61a, an external power connection display unit 61b, a USB device power display unit 61c, an error display unit 61d, a right room temperature display unit 61e, and a left room temperature display unit 61f. The displays by the display unit 61 are controlled by a microcomputer 81 shown in Fig. 34. The operation of each button is transmitted to the microcomputer 81.

[0058] As shown in FIG. 33(C), the battery status display unit 61a displays the status of the battery pack 29 attached to the battery pack mounting section 22a. While the battery pack 29 is being charged, the battery status display unit 61a repeatedly increases the remaining capacity display from 1, 2, 3, 4, etc. When charging of the battery pack 29 is complete, the battery status display unit 61a lights up four remaining capacity displays. When the electrical device 1 is being operated using power from the battery pack 29, the battery status display unit 61a flashes the remaining capacity display of the battery pack 29 in use and lights up the remaining capacity display of the battery pack 29 not in use. When the remaining capacity of the battery pack 29 is empty (below the dischargeable threshold), only the frame of the remaining capacity display of the battery status display unit 61a lights up.

[0059] As shown in FIG. 33(D), the external power supply connection display section 61b lights up when DC power is being input from the outside via the power supply input terminal 28, and turns off otherwise. As shown in FIG. 33(E), the USB device power supply display section 61c lights up when charging power is being supplied to a device connected to the USB terminal 27, and turns off otherwise. As shown in FIG. 33(F), the error display section 61d blinks and displays an error code when an error occurs, and turns off otherwise. The errors are, for example, abnormalities such as temperature abnormality of the compressor 41, overcurrent abnormality, input power supply abnormality (low voltage), and temperature setting outside the temperature setting range.

[0060] The right room temperature display unit 61e displays the set temperature or the current temperature of the first storage chamber 9. The left room temperature display unit 61f displays the set temperature or the current temperature of the second storage chamber 10. For example, the set temperature can be displayed by flashing and the current temperature by lighting, so that the set temperature and the current temperature can be displayed separately on the same display unit.

[0061] The right room temperature setting button 62 is an operation section that allows the user to change the set temperature of the first storage compartment 9. The left room temperature setting button 63 is an operation section that allows the user to change the set temperature of the second storage compartment 10. As shown in FIG. 33(B), pressing the upper parts of the right room temperature setting button 62 and the left room temperature setting button 63 increases the set temperature by 5°C, and pressing the lower parts decreases the set temperature by 5°C. For example, the initial set temperature is 10°C, the maximum set temperature is 60°C, and the minimum set temperature is -18°C.

[0062] The mode switching button 64 is an operation unit for the user to switch the operation mode of the electric device 1. The operation modes include a two-room mode in which the temperatures of the first storage chamber 9 and the second storage chamber 10 are individually controlled, a large room only mode (right room only mode) in which the temperature of only the first storage chamber 9 is controlled, a small room only mode (left room only mode) in which the temperature of only the second storage chamber 10 is controlled, and a one-room mode in which the temperatures of the first storage chamber 9 and the second storage chamber 10 are collectively controlled. For example, the initial operation mode is the two-room mode, and each time the mode switching button 64 is pressed, the mode transitions to the large room only mode, the small room only mode, and the one-room mode.

[0063] As shown in FIG. 32(B), in the two-room mode, the right room temperature display unit 61e and the left room temperature display unit 61f display the set temperature or current temperature of the first storage room 9 and the second storage room 10, respectively. As shown in FIG. 32(C), in the large room only mode, the right room temperature display unit 61e displays the set temperature or current temperature of the first storage room 9, while the left room temperature display unit 61f is turned off. As shown in FIG. 32(D), in the small room only mode, the right room temperature display unit 61e is turned off, while the left room temperature display unit 61f displays the set temperature or current temperature of the second storage room 10. As shown in FIG. 32(E), in the one-room mode, the right room temperature display unit 61e displays the set temperature or current temperature of the first storage room 9 and the second storage room 10, while the left room temperature display unit 61f is turned off. The large room alone mode and single room mode can be distinguished by whether or not the partition line between the right room temperature display unit 61e and the left room temperature display unit 61f is lit, as shown in Figures 32(C) and (E) (lit: large room alone mode, unlit: single room mode).

[0064] The power button 65 is an operation unit that allows the user to switch between starting and stopping the electric device 1. The USB device power switch button 66 is an operation unit that allows the user to switch between supplying charging power to the device connected to the USB terminal 27 and not supplying it. The execute button 67 is a button that allows the user to confirm the current set temperature and start operation at that set temperature. Note that the execute button 67 may be eliminated, and the operation at the set temperature may be started in conjunction with the user's operation of the operation unit.

[0065] In the electric device 1, the set temperature difference between the first storage chamber 9 and the second storage chamber 10 is controlled to be within a predetermined value. This is in consideration of the limit of the maximum temperature difference between the first storage chamber 9 and the second storage chamber 10 that can be realized by the heat insulating effect of the partition plate 70 (or partition plate 170). Figures 32(F) and (G) show that in the case where the set temperature difference between the first storage chamber 9 and the second storage chamber 10 is controlled to be within 60°C, when the set temperature of the first storage chamber 9 is changed from 0°C and 60°C to -10°C, the set temperature of the second storage chamber 10 is automatically changed to 50°C.

[0066] In the case where the set temperature difference between the first containing chamber 9 and the second containing chamber 10 is within 60°C, when the set temperature of the first containing chamber 9 is changed from 0°C to -10°C, the microcomputer 81 changes the temperature settable range of the second containing chamber 10 from -18°C to 60°C to -18°C to 50°C. At this time, the left room temperature display section 61f, which is the display section of the second containing chamber 10, may display the changed temperature settable range. This allows the user to set the temperature after recognizing the temperature settable range. Even if an operation is performed on the left room temperature setting button 63 such that the set temperature of the second containing chamber 10 exceeds 50°C (outside the temperature settable range), the left room temperature display section 61f does not display the set temperature outside the temperature settable range. In other words, even if an operation is performed to increase the set temperature from a state where the set temperature is 50°C, the display of the set temperature does not change to 50°C. The set temperature difference is not limited to 60°C. For example, the switching control can be based on the outside temperature or the remaining battery power.

[0067] Alternatively, the display of a set temperature outside the temperature settable range may be permitted, but the operation cannot be started even if the execute button 67 is pressed. In this case, the user may be notified that the set temperature is outside the temperature settable range by increasing the blinking speed of the set temperature display or displaying an error. The notification may be made when the execute button 67 is pressed, or when the display of the set temperature outside the temperature settable range is started. In addition, when the set temperature of one of the first storage chamber 9 and the second storage chamber 10 is switched to narrow the temperature settable range of the other, the narrowed temperature settable range may be displayed on the temperature display unit on the other side in addition to the set temperature (not shown).

[0068] As shown in FIG. 33(A), when the power button 65 is pressed and the electric appliance 1 is started, the initial operation mode is the two-room mode, and the right room temperature display unit 61e and the left room temperature display unit 61f flash the initial setting temperature of 10°C. After 3 seconds (a predetermined time), the right room temperature display unit 61e and the left room temperature display unit 61f light up to display the current temperature. When either the right room temperature setting button 62 or the left room temperature setting button 63 is pressed, the right room temperature display unit 61e and the left room temperature display unit 61f flash the initial setting temperature of 10°C. The set temperature is displayed for 3 seconds (a predetermined time) after the right room temperature setting button 62 or the left room temperature setting button 63 was last pressed, and if the right room temperature setting button 62 or the left room temperature setting button 63 is pressed during that time, the set temperature is changed.

[0069] If the lower part of the right room temperature setting button 62 is pressed three times while the right room temperature display part 61e and the left room temperature display part 61f are flashing the initial setting temperature of 10°C, the set temperature display on the right room temperature display part 61e will change to -5°C. If the upper part of the left room temperature setting button 63 is then pressed ten times, the set temperature display on the left room temperature display part 61f will change to 60°C, and the right room temperature display part 61e will change to 0°C due to control to keep the set temperature difference within 60°C. Three seconds later, the right room temperature display part 61e and the left room temperature display part 61f will light up and display the current temperature.

[0070] When the mode switching button 64 is pressed, the mode is switched to large room only mode, the set temperature display on the right room temperature display unit 61e is switched to 10°C, and the left room temperature display unit 61f is turned off. After three seconds, the right room temperature display unit 61e and the left room temperature display unit 61f light up to display the current temperature. When the mode switching button 64 is pressed again, the mode is switched to small room only mode, the right room temperature display unit 61e is turned off, and the set temperature display on the left room temperature display unit 61f is switched to 10°C. After three seconds, the right room temperature display unit 61e and the left room temperature display unit 61f light up to display the current temperature. When the mode switching button 64 is pressed again, the mode is switched to one room mode, the set temperature display on the right room temperature display unit 61e is switched to 10°C, the left room temperature display unit 61f is turned off, and the partition line between the right room temperature display unit 61e and the left room temperature display unit 61f is turned off.

[0071] FIG. 34 is a circuit block diagram of the electric device 1. In this figure, the two battery packs 29 are distinguished as battery packs 29a and 29b. The DC power source 90 is, for example, an AC adapter, which is connected to an external AC power source (not shown), converts AC power into DC power (for example, 12V DC) and supplies it to the power source input terminal 28 of the electric device 1. Alternatively, the DC power source 90 is, for example, an in-vehicle power source (in-vehicle battery), which supplies DC power to the power source input terminal 28. The power source input terminal 28 also functions as an in-vehicle power source connection section to which the in-vehicle power source can be connected. The voltage of the in-vehicle power source is, for example, about 12.5V to 14V DC, and varies depending on the state of the in-vehicle power source, the length of the power cord, and the like. Similarly, the magnitude of the voltage drop when the in-vehicle power source outputs a current varies depending on the state of the in-vehicle power source, the length of the power cord, and the like. If the in-vehicle power source is degraded, the internal resistance increases, and the voltage drop when the current is output also increases. The compressor drive circuit 48 is provided on the compressor 41 side.

[0072] The electric device 1 includes a control circuit board 80, a microcomputer 81 as an operation control unit, a microcomputer 82 as a charging control unit, a control power supply 83, a rotation speed setting circuit 84, a shunt resistor 85, battery voltage detection circuits 86a and 86b, a DC power supply voltage detection circuit 86c as a state detection unit, a charging circuit 88, and a shunt resistor 89. The microcomputers 81 and 82 function as control units that control the power supply to the compressor 41. The microcomputers 81 and 82 do not need to be separate from each other and may be a single microcomputer (microcontroller). The control power supply 83 converts an input voltage from a DC power supply 90 or a battery pack 29a or 29b into a power supply voltage (e.g., 5V) for the microcomputers 81 and 82, etc., and supplies the voltage to the microcomputers 81 and 82, etc. The battery voltage detection circuits 86a and 86b transmit detection signals corresponding to the voltages of the battery packs 29a and 29b, respectively, to the microcomputer 82. The DC power supply voltage detection circuit 86 c transmits a detection signal corresponding to the voltage of the DC power supply 90 to the microcomputer 81 .

[0073] The microcomputer 81 controls the overall operation related to cooling and heating of the electric device 1. The microcomputer 81 controls the on / off of the switching element Q3 provided in the current path of the compressor drive circuit 48, and controls the drive and stop of the compressor 41. The microcomputer 81 transmits a rotation speed determination signal to the compressor drive circuit 48 via the rotation speed setting circuit 84 to control the rotation speed of the compressor 41. As shown in FIG. 35, the rotation speed setting circuit 84 has resistors R1 to R3 having different resistance values ​​connected in parallel between rotation speed determination terminals of the compressor drive circuit 48, and switching elements Q6 to Q8 connected in series to the resistors R1 to R3, respectively. The switching elements Q6 to Q8 are selectively turned on, for example, by a rotation speed selection signal from the microcomputer 81. Depending on which of the switching elements Q6 to Q8 is on, the voltage between the rotation speed determination terminals of the compressor drive circuit 48 changes, and the set rotation speed of the compressor 41 is determined.

[0074] The microcomputer 81 receives an operation on the setting unit 60 as an electric signal and controls the display on the setting unit 60 (display on the display unit 61). The microcomputer 81 controls the opening and closing of the first adjustment valve 47a and the second adjustment valve 47b, and controls the flow of the refrigerant in the first refrigerant pipe 45 and the second refrigerant pipe 46. The microcomputer 81 controls the on / off of the switching elements Q4 and Q5 provided in the current paths of the first heating unit 51 and the second heating unit 52, respectively, and controls the driving of the first heating unit 51 and the second heating unit 52. The microcomputer 81 detects the temperatures (current temperatures) of the first storage chamber 9 and the second storage chamber 10 from the output signals of the first thermistor 55 and the second thermistor 56. The microcomputer 81 detects the driving current of the compressor 41 and the driving current of the first heating unit 51 and the second heating unit 52 from the voltage of the shunt resistor 85. The shunt resistor 85 is a block that groups together resistors that are connected in series to the switching elements Q3 to Q5, respectively. The microcomputer 81 detects the voltage of the DC power supply 90 based on a detection signal from the DC power supply voltage detection circuit 86c.

[0075] The microcomputer 82 controls the charging of the battery packs 29a and 29b in the electric device 1. The microcomputer 82 controls the charging voltage through the control of the charging circuit 88. The charging circuit 88 converts the input voltage from the DC power source 90 into the charging voltage of the battery pack 29a or 29b under the control of the microcomputer 82, and supplies it to the battery pack 29a or 29b (charging the battery pack 29a or 29b). The microcomputer 82 controls the on / off of the switching elements Q1 and Q2 provided between the output terminal of the charging circuit 88 and the charging terminals (C+ terminals) of the battery packs 29a and 29b, and determines which of the battery packs 29a and 29b is to be charged. Diodes D5 and D6 for preventing reverse current are connected between the switching elements Q1 and Q2 and the microcomputer 82. The microcomputer 82 detects the voltage of the battery packs 29a and 29b based on detection signals from the battery voltage detection circuits 86a and 86b. The microcomputer 82 detects the charging current from the voltage of a shunt resistor 89 provided in the output current path of the charging circuit 88 .

[0076] Apart from charging control, the microcomputer 82 controls the on / off of relays S1 and S2 as switches connected to the positive terminals (+ terminals) of the battery packs 29a and 29b to determine which of the battery packs 29a and 29b is to be discharged. When power is supplied from the DC power source 90, the microcomputer 82 turns off the relays S1 and S2 and does not discharge from the battery packs 29a and 29b. Fuses F1 to F3 and diodes D1 to D3 for preventing reverse current are connected to the positive terminals of the battery packs 29a and 29b and the DC power source 90. The microcomputers 81 and 82 can communicate with each other and can share various information. For example, the microcomputer 82 can obtain voltage information of the DC power source 90 by communicating with the microcomputer 81.

[0077] FIG. 36(A) is a time chart of power source selection, the voltage of the DC power source 90, and the drive current of the compressor when the DC power source 90 is a normal vehicle power source. A normal vehicle power source is a vehicle power source that is not deteriorated and has sufficient capacity required for starting the compressor 41. Immediately after the start of operation at time t11, a large startup current flows temporarily, and the voltage of the DC power source 90 drops. However, the voltage of the DC power source 90 does not fall below 11V, which is the threshold (hereinafter "battery switch threshold") for switching the power supply source (hereinafter "power supply source") to the compressor 41 from the DC power source 90 to the battery pack 29a or 29b, and the compressor 41 can be started, that is, the electric device 1 can be operated. After the large startup current flows temporarily, the drive current of the compressor 41 drops to a value corresponding to the load. Accordingly, the voltage of the DC power source 90 also rises.

[0078] FIG. 36(B) is a time chart of power source selection, the voltage of the DC power source 90, and the drive current of the compressor 41 in the case where the DC power source 90 is a deteriorated on-board power source in the operation of the electric device 1 in the comparative example. The deteriorated on-board power source has a lower voltage than a normal on-board power source, and the voltage drop when a current flows is also large. The microcomputer 82 first selects the DC power source 90 as the power supply source (turns off the relays S1 and S2). Immediately after the start of operation at time t11, a large starting current flows temporarily, and the voltage of the DC power source 90 drops. At this time, the voltage of the DC power source 90 becomes lower than 11V, which is the threshold value for switching to the battery. As a result, the microcomputer 81 determines that the electric device 1 cannot be operated by the power of the DC power source 90, and starts the process of stopping the compressor 41. The microcomputer 82 also switches the power supply source to the battery pack 29a or 29b. The relays S1 and S2 correspond to the switching circuit in the present invention.

[0079] At time t13, the stop process of the compressor 41 is completed, and the drive current of the compressor 41 becomes 0. At this time, the voltage of the DC power source 90 has recovered to a value higher than 12 V, which is the threshold for switching the power supply source from the battery pack 29a or 29b to the DC power source 90 (hereinafter, the "switching threshold to the vehicle power source"). Therefore, the microcomputer 82 switches the power supply source from the battery pack 29a or 29b to the DC power source 90, and at time t15, attempts to start the compressor 41 again using the power of the DC power source 90. However, since the state of the DC power source 90 has not changed, the compressor 41 cannot be started (the electric device 1 cannot be operated), as in the case of starting the operation at time t11. The interval between times t13 and t15 is a waiting time required to protect the compressor 41, for example, 2 minutes. Since the compressor 41 discharges the refrigerant, if it is restarted immediately after being stopped, the mechanism of the compressor 41 may be adversely affected depending on the state of the refrigerant. For this reason, a waiting time is provided between the stopping and restarting of the compressor 41.

[0080] In this way, if the power supply source is switched to the DC power supply 90 only because the voltage of the DC power supply 90 is higher than 12V, a cycle will occur in which failure to start the compressor 41 using power from the DC power supply 90 → switching of the power supply source to the battery pack 29a or 29b → switching of the power supply source to the DC power supply 90 due to recovery of the voltage of the DC power supply 90 → failure to start the compressor 41 using power from the DC power supply 90, making it virtually impossible to drive the compressor 41, i.e., to operate the electric device 1, and causing poor cooling. The operation of the electric device 1 to solve this problem is shown in Fig. 37.

[0081] FIG. 37 is a time chart of power source selection when the DC power source 90 is a deteriorated on-board power source, the voltage of the DC power source 90, the voltage of the battery pack 29a or 29b, the input voltage to the compressor drive circuit 48, and the drive current of the compressor 41, during operation of the embodiment of the electric device 1.

[0082] During a period A immediately after the power button 65 is pressed, the microcomputer 82 selects the DC power supply 90 as the power supply source (turns off relays S1 and S2). During a period B, the microcomputer 81 starts the compressor 41 with the power of the DC power supply 90, but stops the compressor 41 because the voltage of the DC power supply 90 has dropped below the operation stop threshold (e.g., 11 V) due to the startup current of the compressor 41. The microcomputer 82 determines that the compressor 41 cannot be started with the DC power supply 90 (determines that the DC power supply 90 is unusable), and switches the power supply source to the battery pack 29a or 29b at time C (turns on relay S1 or S2). The voltage of the DC power supply 90 dropping below the operation stop threshold due to the startup current of the compressor 41 corresponds to the operation stop condition in the present invention.

[0083] During a period D after the compressor 41 is stopped during the period B and the waiting time required for protecting the compressor 41 has elapsed, the microcomputer 81 starts the compressor 41 with the power of the battery pack 29a or 29b, and since the voltage of the battery pack 29a or 29b is high, the compressor 41 is successfully started, and the compressor 41 is driven by the power of the battery pack 29a or 29b for a predetermined time regardless of the voltage of the DC power supply 90. During this time, the voltage of the on-board power supply rises due to the vehicle equipped with the on-board power supply running, etc. At a time E when the predetermined time has elapsed, the microcomputer 81 temporarily stops driving the compressor 41. Since the state of the on-board power supply may have changed and the vehicle may be operable, the microcomputer 82 switches the power supply source to the DC power supply 90 again at a time F. The passage of the predetermined time corresponds to the operation restart condition in the present invention. If the voltage of the DC power supply 90 does not rise to or exceed the operation restart threshold (e.g., 12 V) after a predetermined time has elapsed, the compressor 41 may be configured to continue to be driven by the power of the battery pack 29a or 29b (the compressor 41 may not be stopped from being driven). In this case, the operation restart condition is that a predetermined time has elapsed and the voltage of the DC power supply 90 has exceeded the operation restart threshold.

[0084] At time G after the waiting time required for protecting the compressor 41 has elapsed from time E, the microcomputer 81 starts up the compressor 41 with the power of the DC power source 90. The voltage of the DC power source 90 has increased compared to the previous start-up using the power of the DC power source 90, and the voltage of the DC power source 90 does not fall below the operation stop threshold at the current start-up, and the start-up of the compressor 41 is successful. If the voltage of the DC power source 90 also falls below the operation stop threshold at the current start-up, the microcomputer 81 stops the compressor 41, drives the compressor 41 with the power of the battery pack 29a or 29b for a predetermined time and stops it, as in the previous start-up, and then attempts to start the compressor 41 with the power of the DC power source 90 again.

[0085] In this way, when the microcomputer 82 switches the power supply source from the vehicle power supply to the battery pack 29a or 29b according to the detection result of the DC power supply voltage detection circuit 86c in a state where the vehicle power supply is connected to the power input terminal 28 as the DC power supply 90 and the battery pack 29a or 29b is connected to the battery pack mounting section 22a, the microcomputer 82 maintains the power supply from the battery pack 29a or 29b to the compressor 41 until a predetermined time has elapsed, regardless of whether the voltage of the DC power supply 90 is higher than the threshold for switching to the vehicle power supply. This makes it possible to avoid the compressor 41, i.e., the electric device 1, from being substantially unable to be driven, and to suppress poor cooling. That is, it is possible to suitably solve the problem in the operation of the comparative example shown in FIG. 36(B). The effect of being able to avoid the electric device from being substantially unable to be operated is the same even when the output unit is not the compressor 41 (for example, a motor other than the compressor) or when the electric device is not a refrigerator / warmer. The on-board power supply connection portion 28 corresponds to a first power supply source in the present invention, and the battery pack mounting portion 22a corresponds to a second power supply source in the present invention.

[0086] The predetermined time is longer than the waiting time required for protecting the compressor 41. Therefore, the interval for determining whether the DC power supply 90 is usable or not based on the detection result of the DC power supply voltage detection circuit 86 is longer than the waiting time required for protecting the compressor 41.

[0087] The predetermined time may be the time until the user stops the compressor 41, that is, until the user presses the power button 65. In other words, when the microcomputer 82 determines that the DC power supply 90 cannot be used based on the detection result of the DC power supply voltage detection circuit 86, the microcomputer 82 may prohibit the supply of power from the DC power supply 90 to the compressor 41 until the user stops the compressor 41. In this case, when the microcomputer 82 detects that the plug is removed from the power input terminal 28, the microcomputer 82 may attempt to start the compressor 41 with power from the DC power supply 90.

[0088] When the DC power supply 90 is connected to the power input terminal 28 but the power supply source is not the DC power supply 90, the microcomputer 81 may notify the user by, for example, blinking the external power supply connection display unit 61b. This allows the user to recognize that the electrical device 1 cannot be operated because the on-board power supply used as the DC power supply 90 is in a poor state, or that the battery pack 29a or 29b is the power supply source, which is highly convenient.

[0089] 37, when the microcomputer 82 determines that the DC power supply 90 is unavailable based on the detection result of the DC power supply voltage detection circuit 86, the microcomputer 82 may switch the power supply source from the DC power supply 90 to the battery pack 29a or 29b without stopping the operation of the compressor 41. Specifically, at the end of period B, the relay S1 or S2 may be turned on without stopping the operation of the compressor 41, and the power supply source may be switched to the battery pack 29a or 29b to continue the operation of the compressor 41.

[0090] Fig. 38 is a flowchart showing a main routine of the electric device 1. When the power button 65 is pressed, the control power supply 83 is turned on and the microcomputers 81, 82 are activated (S1). The microcomputers 81, 82 execute a power supply selection routine shown in Fig. 39 (S2). The microcomputer 81 reads the set temperature selected by the setting unit 60 (S5), reads the output signals (first storage chamber 9 and second storage chamber 10) of the first thermistor 55 and the second thermistor 56 (S6), and executes control in the operation mode selected by the setting unit 60 (any of S7 to S10).

[0091] Fig. 39 is a flowchart showing the power source selection routine (S2) of Fig. 38. When there is power supply from the DC power source 90 (Yes in S2a) and at least one of the battery packs 29a and 29b is connected (Yes in S2b), the microcomputer 82 executes a DC power source state determination routine (S3). When the battery priority flag is not on (No in S2c), the microcomputer 82 executes a charging routine shown in Fig. 41 (S4) and sets the power source to the DC power source 90 (S2d). When the battery priority flag is on (Yes in S2c), the microcomputer 82 sets the power source to the battery pack 29a or 29b (S2e). When there is no power supply from the DC power source 90 (No in S2a), the microcomputer 82 sets the power source to the battery pack 29a or 29b (S2e). If neither of the battery packs 29a, 29b are connected (No in S2b), the microcomputer 82 selects the DC power supply 90 as the power supply source (S2d). Once the power supply source has been determined, the power supply selection routine ends.

[0092] Fig. 40 is a flowchart showing the DC power supply state determination routine (S3) of Fig. 39. The power supply state determination routine is a routine for setting the on / off state of the battery priority flag. The battery priority flag is off in the initial state. That is, the battery priority flag is turned off when the power is turned off.

[0093] If the battery priority flag is not on (No in S3a), and the voltage of the DC power supply 90 falls below the threshold for switching to the battery when the motor of the compressor 41 starts (Yes in S3b), the microcomputer 81 sets the battery priority flag on (S3c) and ends the DC power supply state determination routine. If the voltage of the DC power supply 90 does not fall below the threshold for switching to the battery when the motor of the compressor 41 starts in S3b (No in S3b), the microcomputer 81 ends the DC power supply state determination routine without changing the battery priority flag from off.

[0094] If the battery priority flag is on (Yes in S3a), when 15 minutes, which is an example of a predetermined time, has elapsed since the battery priority flag was turned on (Yes in S3d), the microcomputer 81 sets the battery priority flag to off (S3e) and ends the DC power supply status determination routine. If 15 minutes have not elapsed since the battery priority flag was turned on in S3d (No in S3d), the microcomputer 81 ends the DC power supply status determination routine without changing the battery priority flag from on.

[0095] The condition for proceeding to Yes in S3b and setting the battery priority flag on may be that the drive current of the compressor 41 cannot be detected, instead of or in addition to the voltage of the DC power supply 90 dropping below the threshold for switching to the battery. In this case, the configuration is such that the motor of the compressor 41 cannot be started, and the battery priority flag is set on. At this time, the battery priority flag may be set on when the state in which the drive current of the compressor 41 cannot be detected is detected for a predetermined time (e.g., 30 seconds). Alternatively, the condition for proceeding to Yes in S3b and setting the battery priority flag on may be that the drive current of the compressor 41 is too large (exceeds a predetermined value). When the voltage of the DC power supply 90 is low, the current becomes large to ensure power. For this reason, the drive current of the compressor 41 being excessive indicates that the voltage of the DC power supply 90 does not reach the required value.

[0096] The condition for proceeding to Yes in S3d and setting the battery priority flag to OFF may be that the voltage of the DC power supply 90 has risen to or above a voltage (a predetermined voltage higher than the threshold for switching to the vehicle power supply) that can withstand the start-up of the compressor 41. This voltage is high enough not to fall below the threshold for switching to the battery even if a voltage drop occurs due to the start-up current of the compressor 41, and is, for example, 15.5V.

[0097] Fig. 41 is a flow chart showing a specific operation of the charging routine (S4 in Fig. 38) of the electric device 1. The microcomputer 82 selects the connection port (port 1) of the battery pack 29a (S11), and if the battery pack 29a is chargeable (Yes in S12), charges the battery pack 29a (S13). When charging of the battery pack 29a is completed (Yes in S14), the microcomputer 82 selects the connection port (port 2) of the battery pack 29b (S15), and if the battery pack 29b is chargeable (Yes in S16), charges the battery pack 29b (S17). The microcomputer 82 recognizes that the fully charged battery packs 29a, 29b can be discharged (S19).

[0098] Fig. 42 is a flow chart showing a specific operation of the large room only mode (S7 in Fig. 38) of the electrical device 1. The microcomputer 81 reads the set temperature of the first housing chamber 9 (S21), and reads the output signal of the first thermistor 55 (current temperature of the first housing chamber 9) (S22). If the current temperature of the first housing chamber 9 is higher than the set temperature + 2°C (Yes in S23), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,500 rpm (S24). The microcomputer 81 turns on (opens) the first adjustment valve 47a and turns off (shuts off) the second adjustment valve 47b (S25), and then drives the compressor 41 (S26). If the current temperature of the first storage chamber 9 is not higher than the set temperature +2°C in S23 (No in S23), or if the current temperature of the first storage chamber 9 is lower than the set temperature -2°C (Yes in S27), the microcontroller 81 drives the first heating unit 51 and stops the second heating unit 52 (S28).

[0099] Fig. 43 is a flow chart showing a specific operation of the electric device 1 in the small room only mode (S8 in Fig. 38). The microcomputer 81 reads the set temperature of the second housing chamber 10 (S31), and reads the output signal of the second thermistor 56 (current temperature of the second housing chamber 10) (S32). If the current temperature of the second housing chamber 10 is higher than the set temperature + 2°C (Yes in S33), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm (S34). The microcomputer 81 turns on (opens) the second adjustment valve 47b and turns off (shuts off) the first adjustment valve 47a (S35), and then drives the compressor 41 (S36). If in S33 the current temperature of the second storage chamber 10 is not higher than the set temperature +2°C (No in S33), or if the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S37), the microcontroller 81 stops the first heating unit 51 and drives the second heating unit 52 (S38).

[0100] Fig. 44 is a flow chart showing a specific operation of the electric device 1 in the single room mode (S9 in Fig. 38). The microcomputer 81 reads the set temperature for the single room mode (S41), and reads the output signal of the first thermistor 55 (the current temperature of the first storage chamber 9) (S42). If the current temperature of the first storage chamber 9 is higher than the set temperature + 2°C (Yes in S43), the microcomputer 81 sets the rotation speed of the compressor 41 to 3,000 rpm (S44). The microcomputer 81 turns on (opens) the first adjustment valve 47a and the second adjustment valve 47b (S45), and then drives the compressor 41 (S46). If the current temperature of first housing chamber 9 is not higher than the set temperature +2° C. in S43 (No in S43), or if the current temperature of first housing chamber 9 is lower than the set temperature −2° C. (Yes in S47), microcomputer 81 drives first heating unit 51 and second heating unit 52 (S48). In S42, S43, and S47, the output signal of second thermistor 56 (current temperature of second housing chamber 10) may be used as the current temperature, or an average of the current temperatures of first housing chamber 9 and second housing chamber 10 may be calculated from both the output signals of first thermistor 55 and second thermistor 56 and used.

[0101] Fig. 45 is a flow chart showing a specific operation of the electric device 1 in the two-room mode (S10 in Fig. 38). The microcomputer 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S51), and reads the output signals of the first thermistor 55 and the second thermistor 56 (current temperatures of the first storage chamber 9 and the second storage chamber 10) (S52). If the current temperature of the first storage chamber 9 is higher than the set temperature + 2°C (Yes in S53) and if the current temperature of the second storage chamber 10 is higher than the set temperature + 2°C (Yes in S54), the microcomputer 81 sets the rotation speed of the compressor 41 to 3,000 rpm (S55). The microcomputer 81 turns on (opens) the first adjustment valve 47a and the second adjustment valve 47b (S56), and then drives the compressor 41 (S57). If the current temperature of the second storage chamber 10 is not higher than the set temperature +2°C in S54 (No in S54), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,500 rpm (S58). The microcomputer 81 turns on (opens) the first adjustment valve 47a and turns off (shuts off) the second adjustment valve 47b (S59), and then drives the compressor 41 (S60). If the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S74), the microcomputer 81 stops the first heating unit 51 and drives the second heating unit 52 (S75).

[0102] If the current temperature of the first chamber 9 is not higher than the set temperature +2°C in S53 (No in S53), if the current temperature of the first chamber 9 is lower than the set temperature -2°C (Yes in S61) and if the current temperature of the second chamber 10 is higher than the set temperature +2°C (S62), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm (S63). The microcomputer 81 turns off (shuts off) the first adjustment valve 47a and turns on (opens) the second adjustment valve 47b (S64), and then drives the compressor 41 (S65). Meanwhile, the microcomputer 81 drives the first heating unit 51 and stops the second heating unit 52 (S66). If the current temperature of the second storage chamber 10 is not higher than the set temperature +2°C in S62 (No in S62), or if the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S67), the microcomputer 81 drives the first heating unit 51 and the second heating unit 52 (S68). If the current temperature of the second storage chamber 10 is not lower than the set temperature -2°C in S67, the microcomputer 81 drives the first heating unit 51 and stops the second heating unit 52 (S69).

[0103] If the current temperature of the first storage chamber 9 is not lower than the set temperature -2°C in S61 (No in S61) and if the current temperature of the second storage chamber 10 is higher than the set temperature +2°C (Yes in S70), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm (S71). The microcomputer 81 turns off (shuts off) the first adjustment valve 47a and turns on (opens) the second adjustment valve 47b (S72), and then drives the compressor 41 (S73). If the current temperature of the second storage chamber 10 is not higher than the set temperature +2°C in S70 (No in S70) and if the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S74), the microcomputer 81 stops the first heating unit 51 and drives the second heating unit 52 (S75).

[0104] In controlling the cooling of the first storage chamber 9, the microcomputer 81 stops turning on the first adjustment valve 47a and driving the compressor 41 when the current temperature of the first storage chamber 9 becomes lower than the set temperature by a predetermined value (e.g., 2°C). In order to prevent the first heating unit 51 from being driven immediately after the first adjustment valve 47a is turned on and the driving of the compressor 41 is stopped, a waiting time may be provided between the turning on of the first adjustment valve 47a and the stopping of the driving of the compressor 41 and the determination of whether or not to drive the first heating unit 51.

[0105] Similarly, in the cooling control of the second storage chamber 10, the microcomputer 81 stops turning on the second adjustment valve 47b and driving the compressor 41 when the current temperature of the second storage chamber 10 becomes lower than the set temperature by a predetermined value (e.g., 2°C). In order to prevent the second heating unit 52 from being driven immediately after the second adjustment valve 47b is turned on and the driving of the compressor 41 is stopped, a waiting time may be provided between the turning on of the second adjustment valve 47b and the stopping of the driving of the compressor 41 and the determination of whether or not to drive the second heating unit 52.

[0106] In controlling the heating of the first storage chamber 9, the microcomputer 81 stops driving the first heating unit 51 when the current temperature of the first storage chamber 9 becomes higher than the set temperature by a predetermined value (e.g., 2°C). In order to prevent the cooling control of the first storage chamber 9 from being started immediately after the first heating unit 51 is stopped, a waiting time may be provided between the stopping of the first heating unit 51 and the determination of whether or not to start the cooling control of the first storage chamber 9.

[0107] Similarly, in the heating control of the second storage chamber 10, the microcomputer 81 stops driving the second heating unit 52 when the current temperature of the second storage chamber 10 becomes higher than the set temperature by a predetermined value (e.g., 2° C.). In order to prevent the cooling control of the second storage chamber 10 from being started immediately after the second heating unit 52 is stopped, a waiting time may be provided between the stopping of the second heating unit 52 and the determination of whether or not to start the cooling control of the second storage chamber 10.

[0108] 42 to 45, 2,500 rpm is an example of the maximum drive strength (first strength) of the compressor 41 according to the size of the first storage chamber 9. 2,000 rpm is an example of the maximum drive strength (second strength) of the compressor 41 according to the size of the second storage chamber 10. 3,000 rpm is an example of the maximum drive strength (third strength) of the compressor 41 according to the total size of the first storage chamber 9 and the second storage chamber 10. That is, the microcomputer 81 switches the drive state (maximum drive strength) of the compressor 41 according to the size of the storage chamber to be cooled. When the drive state is to be increased, the microcomputer 81 may control the drive state to be switched after switching the open / closed state of the regulating valve 87, and when the drive state is to be decreased, the microcomputer 81 may control the drive state to be switched after switching the open / closed state of the regulating valve 87.

[0109] FIG. 46 is a graph showing the time change of the temperature of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when operating in the two-chamber mode with the set temperature of the first storage chamber 9 set to 10°C and the set temperature of the second storage chamber 10 set to -18°C. At the beginning of operation, the temperature of the first storage chamber 9 and the second storage chamber 10 is about 30°C, and the control of S55 to S57 of FIG. 45 is performed, and the compressor 41 is driven at 3,000 rpm. As a result, the temperature of the first storage chamber 9 and the second storage chamber 10 decreases. When the temperature of the first storage chamber 9 reaches 8°C around 8 minutes, the control of S71 to S73 of FIG. 45 is performed, the cooling of the first storage chamber 9 is stopped (the cooling shifts to only the second storage chamber 10), and the rotation speed of the compressor 41 is reduced to 2,000 rpm. When the temperature of first storage chamber 9 exceeds 12°C around 15 minutes, the control of S55 to S57 in Fig. 45 is performed, cooling of first storage chamber 9 is resumed, and the rotation speed of compressor 41 is increased to 3,000 rpm. Thereafter, the same operation is repeated, so that the temperature of first storage chamber 9 is kept around 10°C, and the temperature of second storage chamber 10 decreases towards -18°C.

[0110] FIG. 47 is a graph showing the change over time in the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when the system is operated in the two-chamber mode with the set temperature of the first storage chamber 9 set to -18°C and the set temperature of the second storage chamber 10 set to 10°C. At the beginning of the operation, the temperatures of the first storage chamber 9 and the second storage chamber 10 are about 30°C, and the control of S55 to S57 of FIG. 45 is performed, and the compressor 41 is driven at 3,000 rpm. As a result, the temperatures of the first storage chamber 9 and the second storage chamber 10 decrease. When the temperature of the second storage chamber 10 reaches 8°C around 8 minutes, the control of S58 to S60 of FIG. 45 is performed, the cooling of the second storage chamber 10 is stopped (the system switches to cooling only the first storage chamber 9), and the rotation speed of the compressor 41 decreases to 2,500 rpm. When the temperature of second storage chamber 10 exceeds 12°C around 15 minutes, control S55 to S57 in Fig. 45 is performed, cooling of second storage chamber 10 is resumed, and the rotation speed of compressor 41 is increased to 3,000 rpm. Thereafter, the same operation is repeated, so that the temperature of second storage chamber 10 is kept around 10°C, and the temperature of first storage chamber 9 decreases towards -18°C.

[0111] 48 is a time chart of the input voltage to the compressor 41, the rotation speed of the compressor 41, the opening / closing signals of the first regulating valve 47a and the second regulating valve 47b, the on / off of the first heating section 51 and the second heating section 52, and the temperatures of the first storage chamber 9 and the second storage chamber 10. The first regulating valve 47a and the second regulating valve 47b are solenoid valves that apply a pulse signal only when switching between opening and closing.

[0112] At time t0, the temperatures of the first storage chamber 9 and the second storage chamber 10 are 30°C, and the microcomputer 81 performs the control of S55 to S57 in FIG. 45. That is, the microcomputer 81 outputs a valve opening / closing signal to open both the first adjustment valve 47a and the second adjustment valve 47b, and then drives the compressor 41 at 3,000 rpm. When the temperature of the second storage chamber 10 reaches 8°C at time t1, the microcomputer 81 performs the control of S58 to S60 in FIG. 45. That is, the microcomputer 81 outputs a valve opening / closing signal to open the first adjustment valve 47a and close the second adjustment valve 47b, and then drives the compressor 41 at 2,500 rpm. When the temperature of the second storage chamber 10 reaches 12°C at time t2, the microcomputer 81 performs the control of S55 to S57 in FIG. 45. That is, the microcomputer 81 outputs a valve opening / closing signal to open both the first regulating valve 47a and the second regulating valve 47b, and then drives the compressor 41 at 3,000 rpm.

[0113] When the temperature of the second storage chamber 10 reaches 8°C at time t3, the microcomputer 81 outputs a valve open / close signal to open the first adjustment valve 47a and close the second adjustment valve 47b, as in the control at time t1, and then drives the compressor 41 at 2,500 rpm. At time t3, the cooling control of the second storage chamber 10 is temporarily stopped, but the temperature of the second storage chamber 10 continues to decrease after time t3 due to the transfer of heat to the first storage chamber 9, which has a lower temperature. At time t4, when a predetermined time has elapsed from time t3, the microcomputer 81 starts driving the second heating unit 52 (S75 in FIG. 45). As a result, the temperature of the second storage chamber 10 starts to rise. When the temperature of the second storage chamber 10 reaches 12°C at time t5, the microcomputer 81 stops the second heating unit 52 and performs the control of S55 to S57 in FIG. 45. That is, the microcomputer 81 outputs a valve opening / closing signal to open both the first regulating valve 47a and the second regulating valve 47b, and then drives the compressor 41 at 3,000 rpm. From time t6 to t8, the microcomputer 81 performs the same control as from time t3 to t5.

[0114] According to this embodiment, the following effects can be obtained.

[0115] (1) Since the control circuit board 80 on which the charging circuit 88 is mounted and the fan 49 are housed in the second body portion 4, the charging circuit 88 can be cooled efficiently.

[0116] (2) The fan air generated by fan 49 is branched by branching section 32 into first air passage 33 for cooling cooling mechanism 40 (particularly condenser 42) and second air passage 34 for cooling control circuit board 80, so that cooling mechanism 40 and control circuit board 80 can be efficiently cooled separately with fresh air.

[0117] (3) By integrating the branch portion 32 with the battery box 30, the influence of providing the branch portion 32 on the assembly process can be suppressed.

[0118] (4) Since the first refrigerant pipe 45 is provided on the side surface of the first storage chamber 9 and the second refrigerant pipe 46 is provided on the side surface of the second storage chamber 10, it is possible to individually adjust the temperature over a wide range including the upper parts of each of the first storage chamber 9 and the second storage chamber 10, compared to a configuration in which the refrigerant pipes are provided on the bottom surface, and convenience is improved. Since the first refrigerant pipe 45 is provided on three side surfaces of the first storage chamber 9 and the second refrigerant pipe 46 is provided on three side surfaces of the second storage chamber 10, this effect is remarkable.

[0119] (5) Since the first refrigerant pipe 45 is provided with the first adjustment valve 47a and the second refrigerant pipe 46 is provided with the second adjustment valve 47b, the flow of the refrigerant in the first refrigerant pipe 45 and the second refrigerant pipe 46 can be individually adjusted to individually adjust the temperature of the first storage chamber 9 and the second storage chamber 10. This makes it possible to set one of the first storage chamber 9 and the second storage chamber 10 to freezing and the other to refrigeration, improving convenience.

[0120] (6) The configuration including the first heating section 51 for heating the first storage chamber 9 and the second heating section 52 for heating the second storage chamber 10 allows not only cooling but also heating, improving convenience. In addition, one of the first storage chamber 9 and the second storage chamber 10 can be set to freezing or refrigeration and the other to heating, or one can be set to strong heating and the other to weak heating, improving convenience.

[0121] (7) Microcomputer 81 operates first heating unit 51 or second heating unit 52 as necessary, even during the process of controlling first storage chamber 9 and second storage chamber 10 to a temperature lower than the outside air temperature. For this reason, for example, when the difference in set temperatures between first storage chamber 9 and second storage chamber 10 is large and heat transfer to one of first storage chamber 9 and second storage chamber 10 with the lower set temperature causes the temperature of the other to fall below the set temperature and further decrease, by heating the other, it is possible to prevent the other temperature from deviating downward from the set temperature.

[0122] (8) The microcomputer 81 also operates the cooling mechanism 40 as necessary during the process of controlling the first storage chamber 9 and the second storage chamber 10 to a temperature higher than the outside air temperature. For this reason, for example, in a case where the difference in set temperatures between the first storage chamber 9 and the second storage chamber 10 is large and the transfer of heat from one of the first storage chamber 9 and the second storage chamber 10 with the higher set temperature causes the temperature of the other to rise above the set temperature, by cooling the other, it is possible to prevent the other temperature from deviating upward from the set temperature.

[0123] (9) Since the microcomputer 81 switches the maximum drive strength of the compressor 41 according to the size of the accommodation chamber to be cooled, the compressor 41 can be driven at a strength appropriate to the size of the accommodation chamber, reducing the burden on the compressor 41 and extending the life of the compressor 41. Specifically, for example, when only the second accommodation chamber 10 is cooled, if the rotation speed of the compressor 41 is 2,500 rpm or 3,000 rpm, the rotation speed is too high (the drive strength is too high), and a phenomenon in which the refrigerant returns to the compressor 41 in liquid form may occur. If the refrigerant returns to the compressor 41 in liquid form, an extra load is placed on the compressor 41, shortening the life of the compressor 41. According to the present embodiment, such a problem can be preferably solved.

[0124] (10) Since the first and second regulating valves 47a and 47b are provided in the portions of the first and second refrigerant pipes 45 and 46 where the refrigerant flows in a gaseous state, the refrigerant is sent to the first and second refrigerant pipes 45 and 46 by the single compressor 41. Even when the electrical device 1 is in an inclined state, the refrigerant flow can be prevented from being biased due to the inclination. This can prevent the refrigerant from flowing unevenly to either the first refrigerant pipe 45 or the second refrigerant pipe 46, and can prevent either the first storage chamber 9 or the second storage chamber 10 from being cooled insufficiently. This can prevent the temperatures of the first storage chamber 9 and the second storage chamber 10 from deviating from the set temperature.

[0125] (11) The microcomputer 81 controls the set temperature difference between the first storage chamber 9 and the second storage chamber 10 to be within a predetermined value. This makes it possible to prevent the set temperature difference from exceeding the maximum temperature difference between the first storage chamber 9 and the second storage chamber 10 that can be achieved by the insulating effect of the partition plate 70 (or the partition plate 170). This makes it possible to reduce the risk that the temperatures of the first storage chamber 9 and the second storage chamber 10 will not reach the set temperature.

[0126] (12) When the set temperature of one of the first storage chamber 9 and the second storage chamber 10 is changed so that the set temperature difference exceeds a predetermined value, the microcomputer 81 automatically changes the set temperature of the other chamber so that the set temperature difference is within the predetermined value, which is highly convenient.

[0127] (13) Because the partition plate 70 is divided into two parts, it is easier to carry and store than if it were a single plate. In addition, because the partition plate 170 is foldable, it is easier to carry and store than if it were a single plate.

[0128] (14) The partition plate 70 can be separated into an upper partition plate 71 and a lower partition plate 72. As shown in FIG. 26, the lower partition plate 72 can be attached and used as a wall to prevent the contents 79 stored in the storage chamber 8 from scattering, which is highly convenient.

[0129] (15) The joint 73 between the upper partition plate 71 and the lower partition plate 72 has a spigot structure, and the insulating material 74 extends into the inside of the spigot structure, thereby suppressing the transfer of heat between the first storage chamber 9 and the second storage chamber 10. Similarly, the joint 173 between the upper partition plate 171 and the lower partition plate 172 has a spigot structure, and the insulating material 174 extends into the inside of the spigot structure, thereby suppressing the transfer of heat between the first storage chamber 9 and the second storage chamber 10.

[0130] (16) The rail member 18 is configured to guide the attachment of the partition plate 70 (or partition plate 170) by the recess 18b, and does not protrude inward from the inner surface of the storage chamber 8. This makes it possible to prevent a reduction in the volume of the storage chamber 8 due to the configuration for guiding the partition plate 70 (or partition plate 170). Note that although the rail member 18 protrudes outward from the outer surface of the storage chamber 8, the first refrigerant pipe 45 and the second refrigerant pipe 46 are wound around the storage chamber 8 separately on the left and right sides of the rail member 18, so that the effect on the arrangement of the first refrigerant pipe 45 and the second refrigerant pipe 46 is limited.

[0131] (17) When the microcomputer 82 switches the power supply source from the vehicle power supply to the battery pack 29a or 29b in accordance with the detection result of the DC power supply voltage detection circuit 86c in a state where an on-board power supply is connected to the power input terminal 28 as the DC power supply 90 and the battery pack 29a or 29b is connected to the battery pack mounting portion 22a, the microcomputer 82 maintains the power supply from the battery pack 29a or 29b to the compressor 41 for a predetermined time. This prevents the power supply source from being switched to the DC power supply 90 only when the voltage of the DC power supply 90 is higher than 12V, and prevents the compressor 41 from being driven, i.e., the electric device 1 from being operated, due to unnecessary repeated switching of the power supply source between the DC power supply 90 and the battery pack 29a or 29b, thereby suppressing poor cooling.

[0132] The electrical device 1 is configured to send refrigerant to the first refrigerant pipe 45 and the second refrigerant pipe 46 (to cool the first storage chamber 9 and the second storage chamber 10) using a single compressor 41. However, due to dimensional errors in the diameters of the first refrigerant pipe 45 and the second refrigerant pipe 46, differences in length due to differences in how the first refrigerant pipe 45 and the second refrigerant pipe 46 are laid, and dimensional errors in the two systems of capillaries connected to the first refrigerant pipe 45 and the second refrigerant pipe 46, when attempting to send refrigerant to the first refrigerant pipe 45 and the second refrigerant pipe 46 simultaneously (to cool the first storage chamber 9 and the second storage chamber 10 simultaneously), the temperatures of the first storage chamber 9 and the second storage chamber 10 may deviate from the set temperature (both chambers may not reach the set temperature).

[0133] To address this issue, the electric device 1 is capable of implementing an alternating operation mode. The alternating operation mode is a mode in which alternating cooling is performed by repeatedly flowing the refrigerant only through the first refrigerant pipe 45 and then flowing the refrigerant only through the second refrigerant pipe 46. In the alternating operation mode, the first adjustment valve 47a and the second adjustment valve 47b are turned on (opened) at no time at the same time.

[0134] Figure 49 is a flowchart of the operation of the two-room mode in which an alternating operation mode is added to the two-room mode in Figure 45. In this flowchart, after S52 in Figure 45, a decision 1 (S521) and a decision 2 (S522) are added to determine whether to transition to the alternating operation mode. If both the conditions of decision 1 (S521) and decision 2 (S522) are satisfied (Yes in S521 and Yes in S522), the microcomputer 81 transitions to the alternating operation mode (S523). If at least one of the conditions of decision 1 (S521) and decision 2 (S522) is not satisfied (No in S521 or No in S522), the microcomputer 81 proceeds to S53 in Figure 45.

[0135] Fig. 50 is an explanatory diagram of a specific example of Decision 1 (S521) in Fig. 49. Decision 1 is a first condition necessary for transitioning to the alternating operation mode, and is, for example, any of the following patterns. ·Pattern 1...Determining whether the set temperature of at least one of the first storage chamber 9 and the second storage chamber 10 is below a designated temperature (for example, 0°C). ·Pattern 2...Determining whether the set temperatures of both the first storage chamber 9 and the second storage chamber 10 are below a designated temperature (for example, 0°C). If the result of Decision 1 is Yes, proceed to Decision 2 (S522).

[0136] FIG. 51 is an explanatory diagram of a specific example of the determination 2 (S522) in FIG. 49. The determination 2 is a second condition necessary for transitioning to the alternating operation mode, and is, for example, any of the following patterns. Pattern 1: Determination as to whether the temperature of at least one of the first storage chamber 9 and the second storage chamber 10 is below a designated temperature (for example, 0°C). Pattern 2: Determination as to whether the temperatures of both the first storage chamber 9 and the second storage chamber 10 are below a designated temperature (for example, 0°C). Pattern 3: Determination as to whether simultaneous cooling, which simultaneously sends out refrigerant to the first refrigerant pipe 45 and the second refrigerant pipe 46 (cooling the first storage chamber 9 and the second storage chamber 10 simultaneously), has been performed for a designated time (for example, 20 minutes). Pattern 4: Determination as to whether the outside air temperature exceeds a designated temperature (for example, 35°C). Pattern 5: Determination as to whether the drive current of the compressor 41 exceeds a designated current value (for example, 8A). Pattern 6: Determination as to whether the input voltage of the compressor 41 is below a designated voltage value (12V). Pattern 7: Determining whether the temperature difference between the first storage chamber 9 and the second storage chamber 10 exceeds a specified temperature difference (e.g., 2°C). If the result of Determination 2 is Yes, that is, if a predetermined state is reached, even if both the first storage chamber 9 and the second storage chamber 10 have not reached the set temperature, the simultaneous operation mode in which simultaneous cooling is performed is switched to the alternating operation mode (S523).

[0137] In the determinations 1 and 2, the designated temperatures for the set temperatures of the first storage chamber 9 and the second storage chamber 10 and the designated temperature for the current temperature (predetermined temperature) are set to temperatures that can be reliably reached as the temperatures of the first storage chamber 9 and the second storage chamber 10 even in the simultaneous operation mode. The designated temperature may be determined in relation to the outside air temperature, for example, outside air temperature -20°C.

[0138] Fig. 52 is an explanatory diagram of a specific example of decision 3 (S80) in Fig. 53. Decision 3 is a decision or setting of whether the refrigerant is to be sent first to the first refrigerant pipe 45 or the second refrigerant pipe 46 in the alternating operation mode (whether the first storage chamber 9 or the second storage chamber 10 is to be cooled first), and is, for example, one of the following patterns. ·Pattern 1: The refrigerant is sent first to the refrigerant pipe corresponding to the higher temperature of the first storage chamber 9 or the second storage chamber 10 (cooling begins with the room with the higher temperature). ·Pattern 2: The refrigerant is sent first to the first refrigerant pipe 45 (cooling begins with the first storage chamber 9). ·Pattern 3: The refrigerant is sent first to the second refrigerant pipe 46 (cooling begins with the second storage chamber 10). In decision 3, if the refrigerant is sent to the first refrigerant pipe 45 first (cooling from the first storage chamber 9), the flag is assigned a value of 1, and if the refrigerant is sent to the second refrigerant pipe 46 first (cooling from the second storage chamber 10), the flag is assigned a value of 0.

[0139] FIG. 53 is a flow chart showing the first pattern of the alternating operation mode (S523) of FIG. 49. In the first pattern of the alternating operation mode, when the temperature difference between the first storage chamber 9 and the second storage chamber 10 exceeds a designated temperature difference (for example, 2° C.), the refrigerant pipe (the room to be cooled) from which the refrigerant is sent is switched. After the determination 3 (S81), if the flag is 0 (Yes in S82), the microcomputer 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S83), and reads the output signals (current temperatures of the first storage chamber 9 and the second storage chamber 10) of the first thermistor 55 and the second thermistor 56 (S84). If the current temperature of the second storage chamber 10 is lower than the set temperature (Yes in S85) and the current temperature of the first storage chamber 9 is lower than the set temperature (Yes in S86), the microcomputer 81 stops the compressor 41 (S87). If the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S88), the microcomputer 81 drives the second heating unit 52 (S89), and if not (No in S88), stops the second heating unit 52 (S90). The microcomputer 81 assigns 1 to the flag (S95) and checks whether or not Decision 2 is met (S96).

[0140] If it is determined in S86 that the temperature of the first chamber 9 is not lower than the set temperature (No in S86), the microcomputer 81 sets the flag to 1 (S95) and checks whether or not Decision 2 is met (S96).

[0141] If the current temperature of the second chamber 10 is not lower than the set temperature in S85 (No in S85), and if the current temperature of the second chamber 10 is not lower than the current temperature of the first chamber 9 minus 2°C (No in S91), the microcomputer 81 turns off (shuts off) the first adjusting valve 47a and turns on (opens) the second adjusting valve 47b (S92), sets the rotation speed of the compressor 41 to 2,000 rpm (S93), and drives the compressor 41 (S94). As a result, the refrigerant is sent to the second refrigerant pipe 46 (the refrigerant is not sent to the first refrigerant pipe 45). After that, the microcomputer 81 checks whether or not the judgment 2 is satisfied (S96). If the current temperature of the second storage chamber 10 is less than the current temperature of the first storage chamber 9 minus 2°C in S91 (Yes in S91), the microcomputer 81 assigns 1 to the flag (S95) and checks whether or not decision 2 is met (S96).

[0142] If the flag is 1 in S82 (No in S82), the microcomputer 81 reads the set temperatures of the first and second storage chambers 9 and 10 (S103) and reads the output signals of the first and second thermistors 55 and 56 (current temperatures of the first and second storage chambers 9 and 10) (S104). If the current temperature of the first storage chamber 9 is lower than the set temperature (Yes in S105) and the current temperature of the second storage chamber 10 is lower than the set temperature (Yes in S106), the microcomputer 81 stops the compressor 41 (S107). If the current temperature of the first storage chamber 9 is lower than the set temperature minus 2°C (Yes in S108), the microcomputer 81 drives the first heating unit 51 (S109), and if not (No in S108), stops the first heating unit 51 (S110). The microcomputer 81 assigns 0 to the flag (S115), and checks whether or not the second condition is met (S96).

[0143] If the temperature of the second accommodation chamber 10 is not lower than the set temperature in S106 (No in S106), the microcomputer 81 sets the flag to 0 (S115) and checks whether or not Decision 2 is met (S96).

[0144] If the current temperature of the first chamber 9 is not lower than the set temperature in S105 (No in S105), and if the current temperature of the first chamber 9 is not lower than the current temperature of the second chamber 10 minus 2°C (No in S111), the microcomputer 81 turns on (opens) the first adjusting valve 47a and turns off (shuts off) the second adjusting valve 47b (S112), sets the rotation speed of the compressor 41 to 2,500 rpm (S113), and drives the compressor 41 (S114). As a result, the refrigerant is sent to the first refrigerant pipe 45 (no refrigerant is sent to the second refrigerant pipe 46). After that, the microcomputer 81 checks whether or not the judgment 2 is satisfied (S96). If the current temperature of the first storage chamber 9 is less than the current temperature of the second storage chamber 10 minus 2° C. in S111 (Yes in S111), the microcomputer 81 assigns 0 to the flag (S115) and checks whether or not decision 2 is met (S96).

[0145] If the condition 2 is satisfied (Yes in S96), the microcomputer 81 returns to S82, and if the condition 2 is no longer satisfied (No in S96), the microcomputer 81 ends the alternating operation mode and returns to S51 in FIG.

[0146] In FIG. 53, when the cooling target is switched from the second storage chamber 10 to the first storage chamber 9, the microcomputer 81 controls to increase the output (rotation speed) of the compressor 41 after switching the open / closed state of the regulating valve 47, and when the cooling target is switched from the first storage chamber 9 to the second storage chamber 10, the microcomputer 81 controls to decrease the output (rotation speed) of the compressor 41 after switching the open / closed state of the regulating valve 47.

[0147] 53, when the set temperature of at least one of the first storage chamber 9 and the second storage chamber 10 is switched and the alternating operation mode is entered by satisfying the judgment 2, the microcomputer 81 may first send the refrigerant to only one of the refrigerant tubes corresponding to the storage chamber having the higher current temperature. After that, the microcomputer 81 may switch the refrigerant tube to which the refrigerant is sent when the gradient of the temperature of the other storage chamber turns from negative to positive, or when the current temperature is reversed and the temperature difference becomes equal to or exceeds a predetermined value (for example, 2°C).

[0148] Fig. 54 is a flow chart showing a second pattern of the alternating operation mode (S523) of Fig. 49. In the second pattern of the alternating operation mode, the refrigerant pipe to which the refrigerant is sent (the room to be cooled) is switched over time. When cooling either the first storage chamber 9 or the second storage chamber 10, the rotation speed of the compressor 41 is set to 2,000 rpm, and the first storage chamber 9, which has a larger volume, is cooled for a longer time each time compared to the second storage chamber 10, which has a smaller volume. After determination 3 (S81), the microcomputer 81 starts a timer (S122).

[0149] If the flag is 0 (Yes in S123) and the elapsed time of the timer has not exceeded 300 seconds, which is an example of the second predetermined time (No in S124), the microcontroller 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S125) and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S126).

[0150] When the current temperature of the second storage chamber 10 is lower than the set temperature (Yes in S127) and when the current temperature of the first storage chamber 9 is lower than the set temperature (Yes in S128), the microcomputer 81 stops the compressor 41 (S129). When the current temperature of the second storage chamber 10 is lower than the set temperature -2°C (Yes in S130), the microcomputer 81 drives the second heating unit 52 (S131), and when it is not (No in S130), the microcomputer 81 stops the second heating unit 52 (S132). The microcomputer 81 assigns 1 to the flag (S136), resets the timer (S137), and checks whether or not the judgment 2 is satisfied (S138).

[0151] If the temperature of the first chamber 9 is not below the set temperature in S128 (No in S128), the microcomputer 81 assigns 1 to the flag (S136), resets the timer (S137), and checks whether or not Decision 2 is met (S138).

[0152] If the current temperature of the second chamber 10 is not lower than the set temperature in S127 (No in S127), the microcomputer 81 turns off (shuts off) the first regulating valve 47a and turns on (opens) the second regulating valve 47b (S133), sets the rotation speed of the compressor 41 to 2,000 rpm (S134), and drives the compressor 41 (S135). As a result, the refrigerant is sent to the second refrigerant pipe 46 (the refrigerant is not sent to the first refrigerant pipe 45). After that, the microcomputer 81 checks whether or not the judgment 2 is satisfied (S138).

[0153] If the elapsed time of the timer exceeds 300 seconds in S124 (Yes in S124), the microcomputer 81 assigns 1 to the flag (S136), resets the timer (S137), and checks whether or not Decision 2 is satisfied (S138).

[0154] If the flag is 1 in S123 (Yes in S123) and the elapsed time of the timer has not exceeded 450 seconds, which is an example of the first predetermined time (No in S144), the microcontroller 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S145) and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S146).

[0155] When the current temperature of the first storage chamber 9 is lower than the set temperature (Yes in S147) and when the current temperature of the second storage chamber 10 is lower than the set temperature (Yes in S148), the microcomputer 81 stops the compressor 41 (S149). When the current temperature of the first storage chamber 9 is lower than the set temperature minus 2°C (Yes in S150), the microcomputer 81 drives the first heating unit 51 (S151), and when it is not (No in S150), the microcomputer 81 stops the first heating unit 51 (S152). The microcomputer 81 assigns 0 to the flag (S156), resets the timer (S157), and checks whether or not the judgment 2 is satisfied (S138).

[0156] If the temperature of the second accommodation chamber 10 is not below the set temperature in S148 (No in S148), the microcomputer 81 assigns 0 to the flag (S156), resets the timer (S157), and checks whether or not Decision 2 is satisfied (S138).

[0157] If the current temperature of the first chamber 9 is not lower than the set temperature in S147 (No in S147), the microcomputer 81 turns on (opens) the first adjusting valve 47a and turns off (shuts off) the second adjusting valve 47b (S153), sets the rotation speed of the compressor 41 to 2,000 rpm (S154), and drives the compressor 41 (S155). As a result, the refrigerant is sent to the first refrigerant pipe 45 (no refrigerant is sent to the second refrigerant pipe 46). After that, the microcomputer 81 checks whether or not the judgment 2 is satisfied (S138).

[0158] If the elapsed time of the timer exceeds 450 seconds in S144 (Yes in S144), the microcomputer 81 assigns 0 to the flag (S156), resets the timer (S157), and checks whether or not Decision 2 is satisfied (S138).

[0159] If the condition 2 is satisfied (Yes in S138), the microcomputer 81 returns to S123, and if the condition 2 is not satisfied (No in S138), the microcomputer 81 ends the alternating operation mode and returns to S51 in FIG.

[0160] In the second pattern of the alternating operation mode, the rotation speed of the compressor 41 when cooling the first storage chamber 9 may be set to 2,500 rpm, and the rotation speed of the compressor 41 when cooling the second storage chamber 10 may be set to 2,000 rpm, and the cooling time per cooling may be the same whether cooling the first storage chamber 9 or the second storage chamber 10. This modified pattern is referred to as the third pattern of the alternating operation mode.

[0161] FIG. 55 is a graph showing the change over time in the temperature of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when the set temperatures of the first storage chamber 9 and the second storage chamber 10 are both set to -18°C in the two-room mode and an operation is performed with a transition from the simultaneous operation mode to the third pattern of the alternating operation mode. At 0 minutes, the temperatures of the first storage chamber 9 and the second storage chamber 10 are both 30°C. The microcomputer 81 is in the simultaneous operation mode from 0 minutes to 20 minutes, and the rotation speed of the compressor 41 is set to 3,000 rpm to simultaneously cool the first storage chamber 9 and the second storage chamber 10. At 20 minutes, the temperature of the second storage chamber 10, which is a small room, becomes less than 0°C, so the microcomputer 81 transitions to the alternating operation mode. The microcomputer 81 starts by cooling the first storage chamber 9 (large room) which has a higher temperature in the alternating operation mode, and then switches the room to be cooled every 300 seconds. As a result, the temperatures of the first storage chamber 9 and the second storage chamber 10 approach the set temperature of −18° C. The microcomputer 81 sets the rotation speed of the compressor 41 to 2,500 rpm when only the first storage chamber 9 is being cooled, and to 2,000 rpm when only the second storage chamber 10 is being cooled.

[0162] In Fig. 55, cooling of the second storage chamber 10 is stopped at the 20 minute mark, but the temperature drop of the second storage chamber 10 continues until around the 22 minute mark. This is due to heat exchange between the low-temperature refrigerant remaining in the second refrigerant pipe 46 and the second storage chamber 10. Similarly, even when cooling of the first storage chamber 9 is stopped, the temperature drop of the first storage chamber 9 continues for several minutes. In this way, even if cooling of one of the chambers is stopped, the temperature drop of the one of the chambers continues for about several minutes after cooling is stopped. The same is true in Figs. 56 and 57.

[0163] FIG. 56 is a graph showing the change over time in the temperature of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 when the set temperatures of the first storage chamber 9 and the second storage chamber 10 are both set to -18°C in the two-room mode and operation is performed with a transition from the simultaneous operation mode to the second pattern of the alternating operation mode. At 0 minutes, the temperatures of the first storage chamber 9 and the second storage chamber 10 are both 25°C. During the period from 0 minutes to 15 minutes, the microcomputer 81 is in the simultaneous operation mode, and the rotation speed of the compressor 41 is set to 3,000 rpm to simultaneously cool the first storage chamber 9 and the second storage chamber 10. At 15 minutes, the temperatures of the first storage chamber 9 and the second storage chamber 10 become less than 0°C, so the microcomputer 81 transitions to the alternating operation mode. In the alternating operation mode, the microcomputer 81 starts by cooling the second storage chamber 10, and switches the chamber to be cooled by setting the cooling time per cycle to 300 seconds for the second storage chamber 10 and 450 seconds for the first storage chamber 9. As a result, the temperatures of the first storage chamber 9 and the second storage chamber 10 approach the set temperature of -18°C. The microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm both when cooling only the first storage chamber 9 and when cooling only the second storage chamber 10.

[0164] FIG. 57 is a graph showing the change over time in the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotation speed of the compressor 41 in the two-room mode, in which the set temperature of the first storage chamber 9 is -18°C and the set temperature of the second storage chamber 10 is -5°C, and an operation is performed with a transition from the simultaneous operation mode to another pattern of the alternating operation mode. At 0 minutes, the temperatures of the first storage chamber 9 and the second storage chamber 10 are both 25°C. The microcomputer 81 sets the rotation speed of the compressor 41 to 3,000 rpm in the simultaneous operation mode from 0 minutes to 20 minutes, and simultaneously cools the first storage chamber 9 and the second storage chamber 10. At 20 minutes, the temperature of the second storage chamber 10, which is a small room, becomes lower than the set temperature (-5°C), and the microcomputer 81 transitions to the alternating operation mode. In the alternating operation mode, the microcomputer 81 first cools only the first storage chamber 9, and when the temperature of the second storage chamber 10 exceeds the set temperature + 2°C, switches to cooling only the second storage chamber 10, and when the temperature of the second storage chamber 10 falls below the set temperature, switches to cooling only the first storage chamber 9. When the temperature of the first storage chamber 9 reaches the set temperature while cooling only the first storage chamber 9, the microcomputer 81 stops cooling the first storage chamber 9, and does not cool the second storage chamber 10 (stops the compressor 41) unless the temperature of the second storage chamber 10 exceeds the set temperature + 2°C, and cools only the second storage chamber 10 when the temperature of the second storage chamber 10 exceeds the set temperature + 2°C. The microcomputer 81 sets the rotation speed of the compressor 41 to 2,500 rpm when cooling only the first storage chamber 9, and to 2,000 rpm when cooling only the second storage chamber 10.

[0165] By executing the alternating operation mode as described above, the electrical device 1 can reliably ensure that the temperatures of the first storage chamber 9 and the second storage chamber 10 reach the set temperature even if there are dimensional errors in the diameters of the first refrigerant tube 45 and the second refrigerant tube 46, differences in length due to differences in the way the first refrigerant tube 45 and the second refrigerant tube 46 are routed, and dimensional errors in the two systems of capillaries connected to the first refrigerant tube 45 and the second refrigerant tube 46, and can accurately control the temperatures of the first storage chamber 9 and the second storage chamber 10.

[0166] Figure 58 is a graph showing the changes over time in the temperatures of the first storage chamber 9 and the second storage chamber 10, and the rotation speed of the compressor 41, when in two-chamber mode the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C, and the cooling of the second storage chamber 10 by the compressor 41 is stopped based on the temperature of the second storage chamber 10.

[0167] Figure 59 is a graph showing the changes over time in the temperatures of the first storage chamber 9 and the second storage chamber 10, and the rotation speed of the compressor 41, when in two-chamber mode the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C, and the stop of cooling of the second storage chamber 10 by the compressor 41 is controlled based on the time from the start of cooling.

[0168] In both Figures 58 and 59, the microcomputer 81 controls the temperature of the second storage chamber 10 to maintain the temperature at 30°C by cooling the second storage chamber 10, even though the temperature of the second storage chamber 10 would exceed the set temperature of 30°C and approach 60°C due to the influence of the first storage chamber 9 being 60°C.

[0169] In the case of Fig. 58, when the temperature of the second storage chamber 10 exceeds 32°C (30°C + 2°C), cooling of only the second storage chamber 10 is started, and when the temperature of the second storage chamber 10 reaches 28°C (30°C - 2°C) while only the second storage chamber 10 is being cooled, cooling of the second storage chamber 10 is stopped (compressor 41 is stopped), but as described above, even if the cooling of the second storage chamber 10 is stopped, the temperature of the second storage chamber 10 continues to drop for about several minutes, and the second heating unit 52 is driven due to the drop in temperature of the second storage chamber 10 relative to the set temperature. For this reason, cooling and heating of the second storage chamber 10 are repeated, which is not preferable in terms of power consumption.

[0170] 59, when the temperature of the second storage chamber 10 exceeds 32° C. (30° C.+2° C.), cooling of only the second storage chamber 10 begins and continues for one minute (a predetermined time) before stopping. By limiting the time for cooling only the second storage chamber 10, it is possible to prevent the second storage chamber 10 from becoming too cold relative to the set temperature, and the driving of the second heating unit 52 can be reduced, thereby reducing power consumption.

[0171] Fig. 60 is a flowchart of the operation of the two-room mode in which time control is added to the two-room mode in Fig. 45. Time control is a process in which the compressor 41 is operated intermittently when there is one room to be cooled and the set temperature of that room exceeds a predetermined temperature. The following mainly describes the process added to Fig. 45. In Fig. 60, 20°C is an example of room temperature. The outside air temperature may be used instead of 20°C.

[0172] When the current temperature of the first chamber 9 is higher than the set temperature + 2°C (Yes in S53) and the current temperature of the second chamber 10 is not higher than the set temperature + 2°C (No in S54), and the set temperature of the first chamber 9 is higher than 20°C (Yes in S541), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,500 rpm (S542), turns on (opens) the first adjustment valve 47a and turns off (shuts off) the second adjustment valve 47b (S543), drives the compressor 41 for a specified time (S544), stops the compressor 41 for a specified time (S545), and returns to S51. When the set temperature of the first chamber 9 is lower than 20°C in S541 (No in S541), the microcomputer 81 proceeds to S58 in FIG.

[0173] If the current temperature of the first storage chamber 9 is lower than the set temperature -2°C (Yes in S61) and the current temperature of the second storage chamber 10 is higher than the set temperature +2°C (Yes in S62), and if the set temperature of the second storage chamber 10 is higher than 20°C (Yes in S621), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm (S622), turns off (shuts off) the first adjustment valve 47a and turns on (opens) the second adjustment valve 47b (S623), drives the compressor 41 for a specified time (S624), drives the first heating unit 51 and stops the second heating unit 52 (S625), stops the compressor 41 for the specified time (S626), and returns to S51. If the set temperature of the second accommodation chamber 10 is equal to or lower than 20° C. in S621 (No in S621), the microcomputer 81 proceeds to S63 in FIG.

[0174] When the current temperature of the first chamber 9 is not higher than the set temperature +2°C and not lower than the set temperature -2°C (No in S53, No in S61) and the current temperature of the second chamber 10 is higher than the set temperature +2°C (Yes in S70), and the set temperature of the second chamber 10 is higher than 20°C (Yes in S701), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000 rpm (S702), turns off (shuts off) the first adjustment valve 47a and turns on (opens) the second adjustment valve 47b (S703), drives the compressor 41 for a specified time (S704), stops the compressor 41 for a specified time (S705), and returns to S51. When the set temperature of the second chamber 10 is 20°C or lower in S701 (No in S701), the microcomputer 81 proceeds to S71 in FIG.

[0175] FIG. 61(A) is a waveform diagram of the drive current of the compressor 41 before and after restarting operation when the compressor 41 is operated, stopped for one minute, and then restarted. FIG. 61(B) is a waveform diagram of the drive current of the compressor 41 before and after restarting operation when the compressor 41 is operated, stopped for two minutes, and then restarted. As shown in FIG. 61(A), when the compressor 41 is stopped for one minute, the starting current of the compressor 41 when the operation is restarted is as large as 12.2 A. In contrast, as shown in FIG. 61(B), when the compressor 41 is stopped for two minutes, the starting current of the compressor 41 when the operation is restarted is relatively suppressed to 5.2 A. Therefore, it is desirable to set the designated time for stopping the compressor 41 in S545, S626, and S705 in FIG. 60 to be two minutes or more.

[0176] 62 is a graph showing the temperature of the first storage chamber 9 and the second storage chamber 10 and the change over time in the rotation speed of the compressor 41 when the set temperature of the first storage chamber 9 is 60°C, the set temperature of the second storage chamber 10 is 30°C in the two-chamber mode, and the compressor 41 is operated for 1 minute and stopped for 2 minutes to cool the second storage chamber 10 repeatedly. At 0 minutes, the temperatures of the first storage chamber 9 and the second storage chamber 10 are both 60°C. From this point, the microcomputer 81 performs control to lower the temperature of the second storage chamber 10 to 30°C by cooling the second storage chamber 10, since it is difficult to lower the temperature of the second storage chamber 10 due to the influence of the first storage chamber 9 being 60°C. At this time, by repeating one minute of operation and two minutes of stoppage, the starting current of the compressor 41 is suppressed while the temperature drop in the second storage chamber 10 is slowed down, the second storage chamber 10 is prevented from becoming too cold relative to the set temperature, and the power consumption can be reduced by reducing the driving of the second heating unit 52. After the temperature of the second storage chamber 10 reaches the set temperature, as in Fig. 59, when the temperature of the second storage chamber 10 exceeds 32°C (30°C + 2°C), cooling of only the second storage chamber 10 is started and continued for one minute before stopping, and this control is repeated.

[0177] As shown in Figs. 63 to 66, the electric device 1 has a storage unit (additional part) 200 that can be detachably attached to the right side surface. The main frame 11 has a groove 36 as a first engaged part on the right side. The right outer box 13 has a pair of protrusions (projections) 37 as second engaged parts at both front and rear ends of the lower right side surface. The groove 36 and the protrusions 37 are positioned at positions spaced apart from each other and form a locking part for locking the storage unit 200.

[0178] As shown in Figs. 68 to 70, the storage unit 200 includes a bag 201, a belt 221, a hook portion 222 as a first engagement portion, a pair of hook-and-loop fasteners 224, a pair of ring portions 226 as a second engagement portion, and four buttons 230. The belt 221 is, for example, three nylon belts (nylon bands) sewn together to form an H shape. The hook portion 222 is, for example, made of resin, and is provided so as to bridge a pair of upper ends of the belt 221. Specifically, the upper end portion of the belt 221 is passed through a through hole of the hook portion 222, folded back, and sewn. The hook-and-loop fasteners 224 are provided (sewn) on the left and right portions of the belt 221, respectively. The ring portion 226 is, for example, an elastic ring (rubber ring), and is provided on a pair of lower ends of the belt 221, respectively. Specifically, the lower end portion of the belt 221 is passed through the ring portion 226, folded back, and sewn. Four buttons 230 are provided on the belt 221 and are located at the top and bottom of the pair of hook-and-loop fasteners 224 .

[0179] As shown in FIG. 70, the bag 201 has a storage section 202, a handle section 203, hook-and-loop fasteners 204 to 206, cloth sections 208 and 209, and four buttons 210. The storage section 202 is made of, for example, cloth and has a fastener-type opening and closing mechanism, and is large enough to store the partition plate 70, as shown in FIG. 67(A). The storage section 201 may be replaced with a larger storage section 201A, as shown in FIG. 67(D). As shown in FIG. 70, the handle section 203 for carrying is made of, for example, the same material as the belt 221, and is provided on the upper surface of the storage section 202. A pair of hook-and-loop fasteners 204 are provided (sewn) on the back surface of the storage section 202. The four buttons 210 are provided on the back surface of the storage section 202, and are located at the upper and lower parts of the pair of hook-and-loop fasteners 204. The hook-and-loop fasteners 205 and cloth section 208 are provided (sewn) on the back surface of the storage section 202. The fabric portion 208 is connected to the lower part of the hook-and-loop fastener 205. The fabric portion 209 is connected to the lower part of the fabric portion 208. The hook-and-loop fastener 206 is connected to the lower part of the fabric portion 209.

[0180] When attaching the bag 201 to the belt 221, a pair of surface fasteners 204 of the bag 201 and a pair of surface fasteners 224 provided on the belt 221 are brought into surface contact with each other and detachably coupled (adhered) to each other. Also, four buttons 210 of the bag 201 and four buttons 230 provided on the belt 221 are detachably coupled to each other. Further, the portion of the belt 221 extending in the lateral direction is sandwiched between cloth portions 208 and 209, folded back along the boundary line between the cloth portions 208 and 209, and the surface fasteners 205 and 206 are brought into surface contact with each other and detachably coupled (adhered) to each other.

[0181] When attaching the storage unit 200 to the electric device 1, with the second lid 7 opened as shown in FIG. 4, the hook portion 222 is engaged (hooked) with the groove portion 36 and the ring portion 226 is engaged (hooked) with the convex portion 37 as shown in FIG. 63. The mutual separation distance between the groove portion 36 and the convex portion 37, the vertical length of the belt 221, and the diameter of the ring portion 226 are in a dimensional relationship such that the ring portion 226 is hooked on the convex portion 37 in a state where it is stretched more than its natural length. For this reason, when the storage unit 200 is attached to the electric device 1, a tension (tensile force) is applied to the belt 221 in the vertical direction by the elastic force of the ring portion 226. As a result, the wobbling of the bag 201 is suppressed and the bag 201 is stably held.

[0182] In the engaged state between the groove portion 36 and the hook portion 222, the closed second lid 7 serves as a retaining means to prevent the hook portion 222 from coming off. This is because, as shown in FIG. 66(A), the distance L1 from the upper end portion of the hook portion 222 to the opposing portion with the upper end portion of the second lid 7 in the engaged state between the groove portion 36 and the hook portion 222 is less than the thickness (vertical length) L2 of the hook portion 222 (L1 < L2). By the second lid 7 serving as a retaining means to prevent the hook portion 222 from coming off, it is possible to prevent the storage unit 200 from detaching from the electric device 1 due to vibration or the like.

[0183] Since the storage unit 200 is detachable, the electric device 1 can be provided with a storage function other than the warm or cold storage space (the first storage chamber 9 and the second storage chamber 10), which is highly convenient. By attaching the storage unit 200, the electric device 1 can store small items such as a spare battery pack or a bottle opener in the bag 201, which is convenient for carrying small items that do not require heating or cooling. In addition, the removed partition plate 70 can be stored in the bag 201, which is convenient for carrying and storing the removed partition plate 70.

[0184] As shown in FIG. 71, the electric device 1 is detachably provided with the storage unit 200, the accessory compartments 231-233, and the S-hook 237. The second cover 7 has a hooking portion (groove) 91 for hooking (engaging) the accessory compartment 231, a hooking portion 102 for hooking (engaging) the accessory compartment 233, and hooking portions (through holes) 93 and 94 for hooking (engaging) the S-hook 237. The first cover 6 has a hooking portion (groove) 92 for hooking (engaging) the accessory compartment 232, and hooking portions (through holes) 95 and 96 for hooking (engaging) the S-hook 237. The accessory compartments 231-233 are convenient as temporary storage. The S-hook 237 is convenient for hanging small items. The accessory case 231 can also be hooked onto the groove 36 as shown in FIG. 72, but in this case the storage unit 200 cannot be attached.

[0185] As shown in FIG. 73 and FIG. 74, the electric device 1 has a storage unit (additional part) 250 that can be attached to and detached from the movable handle 20. The movable handle 20 has a grip part 20a and a bridge part 20b. The storage unit 250 has a bag 251 and two belts 253. One end of each belt 253 is sewn to the bag 251, and it extends between the bag 251 and the back surface to surround the bridge part 20b, and a hook-and-loop fastener 254 provided (sewn) on the other end side is in surface contact with a hook-and-loop fastener (not shown) provided (sewn) on the back surface of the bag 251, and they are detachably connected (adhered) to each other. Instead of or in addition to the adhesion between the hook-and-loop fasteners, the buttons may be connected to each other. A finger insertion space 20c is secured between the bag 251 and the grip part 20a, so that the movable handle 20 can be used without any problems. The storage unit 250 also has the same effect (addition of a storage function) as the storage unit 200. The electrical device 1 may be equipped with both the storage units 200 and 250.

[0186] 75 to 81 relate to an electric appliance 1A according to another embodiment of the present invention. Compared to the electric appliance 1, the electric appliance 1A is different in that it is further capable of attaching and detaching storage units 300, 400, 500 as additional parts, but is the same in other respects. The following description will focus on the differences.

[0187] As shown in Figures 75 and 76, the electrical device 1 has a storage unit (additional part) 300 that can be detachably attached to its front surface (front face). The main frame 11 has a pair of grooves 38 as first engaged parts at both left and right ends of the front edge. The left outer box 12 has a pair of protrusions (projections) 39 as second engaged parts at both left and right ends of the lower front surface. The grooves 38 and the protrusions 39 are positioned at positions spaced apart from each other and form a locking part for locking the storage unit 300.

[0188] The storage unit 300 includes a bag 301, a belt 321, a pair of hooks 322 as first engaging parts, a pair of hook-and-loop fasteners 324, a pair of rings 326 as second engaging parts, and four buttons 330. The belt 321 is, for example, three nylon belts (nylon bands) sewn together to form an H shape. The pair of hooks 322 are, for example, made of resin, and are provided at a pair of upper ends of the belt 321, respectively. Specifically, the upper end of the belt 321 is passed through a through hole of the hooks 322, folded back, and sewn. The hook-and-loop fasteners 324 are provided (sewn) at the left and right parts of the belt 321, respectively. The rings 326 are, for example, elastic rings (rubber rings), and are provided at a pair of lower ends of the belt 321, respectively. Specifically, the lower end of the belt 321 is passed through the rings 326, folded back, and sewn. Four buttons 330 are provided on the belt 321 and are located at the top and bottom of the pair of hook-and-loop fasteners 324 .

[0189] The bag 301 has the same configuration as the bag 201, except that it does not have a handle portion. However, the bag 301 may have a handle portion. The bag 301 can be attached to the belt 321 in the same manner as the bag 201 is attached to the belt 221.

[0190] When the storage unit 300 is attached to the electric device 1A, the hook portion 322 is engaged (hooked) with the groove portion 38 and the ring portion 326 is engaged (hooked) with the protrusion portion 39 as shown in FIG. 76 with the first lid body 6 open as shown in FIG. 2. The mutual separation distance between the groove portion 38 and the protrusion portion 39, the vertical length of the belt 321, and the diameter of the ring portion 326 are dimensionally related so that the ring portion 326 can be hooked on the protrusion portion 39 in a state in which it is stretched beyond its natural length. Therefore, when the storage unit 300 is attached to the electric device 1A, the belt 321 is subjected to tension (tension) that pulls it in the vertical direction due to the elastic force of the ring portion 326. This suppresses the wobbling of the bag 301 and stably holds the bag 301.

[0191] When the groove 38 is engaged with the hook 322, the first lid 6 in the closed state prevents the hook 322 from coming off. This is for the same reason as the second lid 7 in the closed state prevents the hook 222 from coming off when the groove 36 is engaged with the hook 222, as described above. The first lid 6 prevents the hook 322 from coming off, thereby preventing the storage unit 300 from coming off the electric device 1A due to vibration or the like.

[0192] Since the storage unit 300 is detachable, the electric device 1 can be provided with a storage function other than the warm or cold storage space (the first storage chamber 9 and the second storage chamber 10), which is highly convenient. By attaching the storage unit 300 to the electric device 1A, small items such as a spare battery pack and a bottle opener can be stored in the bag 301, which is convenient for carrying small items that do not require heating or cooling. In addition, the removed partition plate 70 can be stored in the bag 301, which is convenient for carrying and storing the removed partition plate 70.

[0193] As shown in FIG. 77 and FIG. 78, the electric device 1A can have the storage unit 200 detachably attached to the right side, the storage unit 300 detachably attached to the front, and the storage unit 400 detachably attached to the rear (back) side. The storage units 200 and 300 are attached as described above. The storage unit 400 has the same configuration as the storage unit 300, and can be attached to the rear side of the electric device 1A in the same manner as the storage unit 300 is attached to the front side of the electric device 1A. The main frame 11 also has a pair of grooves 38 as first engaged parts on the rear edge. The grooves 38 engage with the hook parts (first engaging parts) 422 of the storage unit 400. The left outer box 12 also has a pair of protrusions (projections) 39 as second engaged parts on both left and right ends of the lower rear surface. The protrusions 39 engage with the ring parts (second engaging parts) 426 of the storage unit 400.

[0194] The belt 221 of the storage unit 200 and the belt 321 of the storage unit 300 are connected to each other by a connecting portion 240. The belt 221 of the storage unit 200 and the belt 421 of the storage unit 400 are connected to each other by a connecting portion 241. That is, the storage units 200, 300, and 400 are connected to each other by the connecting portions 240 and 241. However, the connecting portions 240 and 241 may be omitted, and the storage units 200, 300, and 400 may be separate from each other.

[0195] As shown in Figures 79 to 81, the electric device 1A has an upper surface to which a storage unit 500 can be detachably attached. The first cover 6 has a pair of downwardly facing grooves 97 as first engaged parts at both left and right ends of the front edge, and has a downwardly facing groove 98 as a second engaged part in the center of the rear edge. The grooves 97, 98 are disposed at positions spaced apart from each other and form a locking part for locking the storage unit 500.

[0196] The storage unit 500 has a bag 501, a belt 521, a hook portion 522, a hook-and-loop fastener 524, and a button 530. The hook portions 522 are provided at the front end of the bifurcated belt 521 and at the rear end of the belt 521. The front hook portion 522 is hooked into the groove portion 97. The rear hook portion 522 is hooked into the groove portion 98. The hook-and-loop fastener 524 and the button 530 are for attaching the bag 501 and are provided on the belt 521. The bag 501 has a hook-and-loop fastener and a button (not shown) on the back surface thereof that correspond to the hook-and-loop fastener 524 and the button 530. The storage unit 500 also provides the same effect as the storage unit 200 (addition of a storage function).

[0197] The second cover 7 has a downwardly facing groove 99 as a first engaged portion at its front edge, and a pair of downwardly facing grooves 100 as second engaged portions at both left and right ends of its rear edge. Although not shown in the figures, the electrical device 1A can be detachably attached to a storage unit having a configuration similar to that of the storage unit 500 by using the grooves 99, 100.

[0198] Fig. 82 is a perspective view of an electric device 1B according to yet another embodiment of the present invention. The following mainly describes the differences from the electric device 1. The electric device 1B has grooves 101 as first engaged portions at both left and right ends of the front edge of the first cover 6. The left outer box 12 has a pair of convex portions (projections) 39 as second engaged portions at both left and right ends of the lower front surface.

[0199] The belt 621 is, for example, three nylon belts (nylon bands) sewn together to form an H-shape. The pair of hook parts 622 are, for example, made of resin, and are provided at a pair of upper ends of the belt 621, respectively. Specifically, the upper end of the belt 621 is passed through a through hole of the hook part 622, folded back, and sewn. The hook and loop fasteners 624 are provided (sewn) at the left and right parts of the belt 621, respectively. The ring parts 626 are, for example, elastic rings (rubber rings), and are provided at a pair of lower ends of the belt 621, respectively. Specifically, the lower end of the belt 621 is passed through the ring part 626, folded back, and sewn. The four buttons 630 are provided on the belt 621, and are located at the upper and lower parts of the pair of hook and loop fasteners 624. A bag (not shown) having the same configuration as the bag 301 in FIG. 75 can be attached to the belt 621, and a storage unit can be formed.

[0200] When attaching this storage unit to the electric device 1B, the hook portion 622 is engaged (hooked) with the groove portion 101 and the ring portion 626 is engaged (hooked) with the protrusion portion 39 with the first lid body 6 closed. The mutual separation distance between the groove portion 101 and the protrusion portion 39, the vertical length of the belt 621, and the diameter of the ring portion 626 are in a dimensional relationship such that the ring portion 626 is hooked on the protrusion portion 39 in a state in which it is stretched from its natural length, and tension (tension) is applied to the belt 621 in the vertical direction by the elastic force of the ring portion 626. This suppresses the wobbling of a bag (not shown) attached to the belt 621, and the bag is stably held. The belt 621 suppresses the first lid body 6 from being unexpectedly opened due to the fall or vibration of the electric device 1B.

[0201] FIG. 83 is a perspective view of the inside of the electric device 1 in a state where the storage chamber 8 is divided into three parts by the partition plates 70a and 70b (three-room mode), as seen from the upper right front. Here, the flow path of the refrigerant will be described. The structure and control other than the flow path of the refrigerant are basically as described above. The refrigerant flowing out from the compressor 41 flows into the regulating valve 703 via the condenser 42. The regulating valve 703 is connected to the first refrigerant pipe 45 as the first cooling part, the second refrigerant pipe 46 as the second cooling part, and the fifth refrigerant pipe 701 as the fifth cooling part, and the refrigerant flowing into the regulating valve 703 flows out into a maximum of three flow paths. That is, the refrigerant flowing into the regulating valve 703 through one flow path is divided into a maximum of three flow paths (the first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 701) and flows out. The regulating valve 703 includes a third regulating valve capable of controlling the flow of the first refrigerant pipe 45, a fourth regulating valve capable of controlling the flow of the second refrigerant pipe 46, and a fifth regulating valve capable of controlling the flow of the fifth refrigerant pipe 701. Each of these regulating valves can be switched between an open state and a closed state by a signal from the microcomputer 81, and by switching between the open state and the closed state, it is possible to control whether or not refrigerant flows through each refrigerant pipe. The specific control contents are as described above.

[0202] The first refrigerant pipe 45 is provided on at least the side surface of the first storage chamber 9 as described above, and cools the first storage chamber 9. The second refrigerant pipe 46 is provided on at least the side surface of the second storage chamber 10 as described above, and cools the second storage chamber 10. The fifth refrigerant pipe 701 is provided on the side surface and bottom surface of the third storage chamber 704, and cools the third storage chamber 704. The first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 701 are independent of each other. That is, the first refrigerant pipe 45 is provided to mainly cool the first storage chamber 9, the second refrigerant pipe 46 is provided to mainly cool the second storage chamber 10, and the fifth refrigerant pipe 701 is provided to cool the third storage chamber 704.

[0203] The first refrigerant pipe 45 and the second refrigerant pipe 46 extend in the same manner as in FIG. 13, and therefore the description thereof will be omitted. The fifth refrigerant pipe 701 extends from the upper end to the lower end of the rear surface of the rear side surface member 706 along the rear side surface member 706. The fifth refrigerant pipe 701 repeats a back and forth movement of turning back and forth on the rear side surface of the rear side surface member 706 six times, and then extends toward the front side surface member 705 while turning back and forth on the bottom surface side member (not shown). The fifth refrigerant pipe 701 that has reached the front side surface member 705 extends from the lower end to the upper end of the front side surface member 705 while turning back and forth on the left and right. The fifth refrigerant pipe 701 that has reached the front side surface member 705 from the lower end to the upper end is connected to the adjustment valve 702. The adjustment valve 702 is connected so that the first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 703 join together. The refrigerant that joins at the adjustment valve 702 is discharged from one refrigerant pipe 44 and flows into the compressor 41. In this way, by arranging three refrigerant pipes to extend independently to the three storage chambers, it becomes possible to control each independently when using in three-room mode.

[0204] Although the present invention has been described above using the embodiment as an example, it will be understood by those skilled in the art that various modifications are possible to the components and processes of the embodiment within the scope of the claims. Modifications will be mentioned below.

[0205] The first storage chamber 9 and the second storage chamber 10 may be the same size. The first refrigerant pipe 45 and the second refrigerant pipe 46 may be separate from the right side member 16 and the left side member 17. Instead of a configuration in which the set temperatures of the first storage chamber 9 and the second storage chamber 10 are confirmed and operation is started by pressing the execute button 67 in the setting unit 60, a configuration in which the set temperatures are confirmed and operation is started even if the execute button 67 is not pressed may be used. For example, a configuration in which the set temperatures are confirmed and operation is started when three seconds (a predetermined time) have elapsed since the right room temperature setting button 62 or the left room temperature setting button 63 was last pressed may be used. In this case, the execute button 67 may be omitted.

[0206] The materials of the belt, bag, hook, ring, etc. of the storage unit can be changed as appropriate. In the embodiment relating to the attachment and detachment of the storage unit, instead of the cooling mechanism 40 using the compressor 41, another cooling mechanism such as a Peltier element may be provided.

[0207] The number of battery packs that can be connected, the rated output voltage of the battery pack, the voltage of the DC power source 90, various times, various threshold values, etc., which are given as specific numerical values ​​in the embodiments, do not limit the scope of the invention in any way and can be changed as desired to suit the required specifications. [Explanation of symbols]

[0208] 1, 1A, 1B...electrical device, 2...main body, 3...first main body part, 4...second main body part, 5...lid body, 6...first lid body, 6a...handle part, 7...second lid body, 7a...handle part, 8...accommodation chamber (accommodation part), 8a...bottom surface, 9...first accommodation chamber (first accommodation part), 9a...first side surface, 9b...second side surface, 10...second accommodation chamber (second accommodation part), 10a...first side surface, 10b...second side surface, 11...main frame, 11b...boss, 11c, 11d...opening, 12...left outer box, 12a...boss, 13...right outer box, 15...bottom surface member, 16...right side surface member, 16a...outer bent portion, 17...left side surface member, 17a...outer bent portion, 18...rail member, 18a...notch portion, 18b...recess, 18c,18d...groove portion, 19...caster, 20...movable handle (carry handle), 20a...grip portion, 20b...bridge portion, 20c...finger insertion space, 21...grip portion, 22...battery pack storage chamber, 22a...battery pack mounting portion, 23...air intake port, 24...air exhaust port, 25...first hinge mechanism, 26...second hinge mechanism, 27...USB terminal, 28...power input terminal (vehicle power connection portion), 29...battery pack, 30...battery box, 30a...boss, 30b...drain hole, 31...battery terminal, 32 ...branching portion, 33...first air passage, 34...second air passage, 35...leg portion, 36...groove portion (first engaged portion), 37...projection portion (second engaged portion), 38...groove portion (first engaged portion), 39...projection portion (second engaged portion), 40...cooling mechanism, 41...compressor (cooling machine), 42...condenser, 43...capillary tube, 44...refrigerant pipe, 44a...branching portion, 45...first refrigerant pipe (first cooling portion), 45a...gas reservoir, 46...second refrigerant pipe (second cooling portion), 46a...gas reservoir, 47...regulating valve, 47 a...first adjusting valve, 47b...second adjusting valve, 48...compressor drive circuit, 49...fan, 50...heating mechanism, 51...first heating section, 52...second heating section, 55...first thermistor (first temperature sensor), 56...second thermistor (second temperature sensor), 57...first holder, 58...second holder, 60...setting section, 61...display section, 61a...battery status display section, 61b...external power supply connection display section, 61c...USB device power display section, 61d...error display section, 61e...right room temperature display section, 61f...left room temperature temperature display unit, 62...right room temperature setting button, 63...left room temperature setting button, 64...mode switching button (room switching button), 65...power button, 66...USB device power switching button, 67...execute button, 70...partition plate, 71...upper partition plate, 72...lower partition plate, 73...joint portion, 74...insulating material, 79...contents, 80...control circuit board, 81...microcomputer (operation control unit), 82...microcomputer (charging control unit), 83...control power supply, 84...rotation speed setting circuit, 85...shunt resistor, 86a,86b...battery voltage detection circuit, 86c...DC power supply voltage detection circuit, 87...regulating valve, 88...charging circuit, 89...shunt resistor, 90...DC power supply, 91-96...hook portion, 97-101...groove portion, 102...hook portion, 147a...first regulating valve, 147b...second regulating valve, 170...partition plate, 171...upper partition plate, 172...lower partition plate, 173...joint portion, 174... Insulation material, 175... hinge mechanism, 200... storage unit (additional portion), 201, 201A... bag, 202... storage portion, 203... handle portion, 204-206... hook-and-loop fastener, 208, 209... cloth portion, 210... button, 221... belt, 222... hook portion (first engagement portion), 224... hook-and-loop fastener, 226... ring portion (second engagement portion), 230... button, 231-23 3...small item holder, 237...S-shaped hook, 240, 241...connecting portion, 250...storage unit (additional portion), 251...bag, 253...belt, 254...hook and loop fastener, 300...storage unit (additional portion), 301...bag, 321...belt, 322...hook portion (first engagement portion), 324...hook and loop fastener, 326...ring portion (second engagement portion), 330...button, 400...storage unit (additional portion), 401...bag, 421...belt, 422...hook portion (first engagement portion), 426...ring portion (second engagement portion), 500...storage unit (additional portion), 501...bag, 521...belt, 522...hook portion, 524...hook and loop fastener, 530...button, 621...belt, 622...hook portion, 624...hook and loop fastener, 630...button.

Claims

1. A main body having a first storage chamber and a second storage chamber, each having a bottom surface and a side surface, the first storage chamber and the second storage chamber being arranged adjacent to each other on the left and right, the side surfaces including a first side surface which is furthest from each other and a second side surface which is connected to the first side surface; A cover that can be opened and closed relative to the main body; a cooling mechanism having a compressor that discharges a refrigerant and a refrigerant pipe connected to the compressor, the refrigerant pipe including a first refrigerant pipe that cools the first chamber and a second refrigerant pipe that cools the second chamber; A heating mechanism including a first heating unit configured to heat the first storage chamber and a second heating unit configured to heat the second storage chamber; a setting unit that is operable by a user to set a set temperature of the first storage chamber to a first set temperature and to set a set temperature of the second storage chamber to a second set temperature; an adjusting valve for controlling whether a refrigerant flows through the first refrigerant pipe or the second refrigerant pipe; A first temperature sensor that detects a temperature of the first storage chamber; A second temperature sensor that detects a temperature of the second chamber; an operation control unit that controls the regulator valve in response to the first set temperature, the second set temperature, the temperature detected by the first temperature sensor, and the temperature detected by the second temperature sensor; The operation control unit is configured to adjust the set temperatures of the first storage chamber and the second storage chamber to a refrigerated state or a frozen state, and to arbitrarily set which of the set temperatures of the first storage chamber and the second storage chamber is lower than the other set temperature. An electrical device comprising: A removable partition plate that separates the first storage chamber and the second storage chamber; A pair of rail members to which the partition plate is detachably attached, the first refrigerant pipe and the first heating unit are arranged along the first side surface and the second side surface of the first storage chamber, the second refrigerant pipe and the second heating section are arranged along the first side surface and the second side surface of the second storage chamber, The pair of rail members are disposed at a division portion where the first heating portion and the second heating portion are divided and where the first refrigerant pipe and the second refrigerant pipe are divided.

1. An electrical device comprising:

2. An electrical device as claimed in claim 1, the first refrigerant pipe is folded back a number of times within the range of the side surface of the first storage chamber, The second refrigerant pipe is folded back multiple times within the range of the side surface of the second storage chamber.

1. An electrical device comprising:

3. An electrical device as claimed in claim 1, The partition plate can be divided into an upper partition plate and a lower partition plate.

1. An electrical device comprising:

4. An electrical device as claimed in claim 1, The operation control unit is configured to control the heating mechanism according to a set temperature and a detected temperature of the first storage chamber or the second storage chamber heated by the heating mechanism.

1. An electrical device comprising:

5. An electrical device as claimed in claim 4, The set temperatures of the first storage chamber and the second storage chamber are adjusted to a refrigerated state, a frozen state, or a heated state, respectively.

1. An electrical device comprising:

6. An electrical device as claimed in claim 1, The operation control unit is configured to execute a two-chamber mode in which the temperatures of the first storage chamber and the second storage chamber are individually controlled when the partition plate is attached.

1. An electrical device comprising:

7. An electrical device as claimed in claim 1, The operation control unit is configured to execute a one-room mode in which the temperatures of the first storage chamber and the second storage chamber are collectively controlled when the partition plate is removed.

1. An electrical device comprising:

8. An electrical device as claimed in claim 1, The setting unit is configured to set a first one-room mode in which temperature control is performed only in the first storage chamber, and a second one-room mode in which temperature control is performed only in the second storage chamber.

1. An electrical device comprising:

9. An electrical device as claimed in claim 1, The partition plate is configured to be detachably guided by recesses provided in the pair of rail members.

1. An electrical device comprising:

10. An electrical device as claimed in claim 1, The first heating unit is configured to cover the first refrigerant pipe from the outside, and the second heating unit is configured to cover the second refrigerant pipe from the outside.

1. An electrical device comprising:

Images