Dehumidifying device

Abstract

To provide a dehumidifying device capable of reducing the possibility that an ignition source encounters a combustible range of leaked refrigerant.SOLUTION: A dehumidifying device 100 comprises a main body case 1 which has an intake port 2 and a blowout port 4 and whose interior space is partitioned into a first space 1a and a second space 1b. A refrigeration cycle 3 using flammable refrigerant equal to or less than a warming coefficient 10, a blower unit 6 acting on the refrigeration cycle 3, and a control unit 46 for controlling the refrigeration cycle 3 and the blower unit 6 are provided in the main body case 1. A condenser 8 has a condenser brazing portion 87 in which a heat transfer tube 85 which extends from one end to the other end of the condenser 8 and through which refrigerant flows is brazed. An evaporator 10 has an evaporator brazing portion 88 in which a heat transfer tube 86 which extends from one end to the other end of the evaporator 10 and through which refrigerant flows is brazed. The control unit 46 and the blower unit 6 are disposed in the first space 1a, the condenser brazing portion 87 and the evaporator brazing portion 88 are disposed in the second space 1b, and the second space 1b has an opening 26 communicating with the outside of the main body case 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a dehumidifier. [Background technology]

[0002] Dehumidifiers are known that are used in living spaces to reduce humidity in the living spaces, etc. For example, Patent Document 1 describes a dehumidifier that has a refrigeration cycle that includes a compressor, an evaporator, a condenser, a throttling device, and a blower, and uses a flammable refrigerant. This dehumidifier is equipped with a refrigerant leak detection device and a solenoid valve. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-178480 Summary of the Invention [Problem to be solved by the invention]

[0004] The device described in Patent Document 1 is configured to cut off the power supply to the main body in response to a signal from the refrigerant leak detection device, but there is room for improvement in terms of reducing the possibility of an ignition source encountering the flammable range of the leaked refrigerant.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a dehumidifier that can reduce the possibility of an ignition source encountering the flammable range of leaked refrigerant. [Means for solving the problem]

[0006] To solve the above problems, a dehumidifier according to one embodiment of the present disclosure includes a main body case having an inlet and an outlet, and an internal space divided into a first space and a second space by a partition wall. The main body case contains a refrigeration cycle using a flammable refrigerant with a global warming potential of 10 or less, which is formed by sequentially connecting a compressor, a condenser, an expander, and an evaporator in a ring shape, a blower unit acting on the refrigeration cycle, a control unit for controlling the refrigeration cycle and the blower unit, and a first air passage through which air drawn in from the inlet by the blower unit flows to the outlet via the evaporator. The condenser has a condenser brazing portion to which a heat transfer tube extending from one end of the condenser to the other and folded back to allow the refrigerant to flow. The evaporator has an evaporator brazing portion to which a heat transfer tube extending from one end of the evaporator to the other and folded back to allow the refrigerant to flow is brazed. The control unit and the blower unit are disposed in the first space, and the condenser brazing portion and the evaporator brazing portion are disposed in the second space, and have an opening that connects the second space with the outside of the main body case.

[0007] Any combination of the above components, and conversion of the present disclosure into a method, device, system, recording medium, computer program, etc., are also valid aspects of the present disclosure. [Effects of the Invention]

[0008] According to the present disclosure, a dehumidifier can be provided that can reduce the possibility of an ignition source encountering the flammable range of a leaking refrigerant. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view schematically illustrating a dehumidifying device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a side view schematically showing the dehumidifier of FIG. 1. [Figure 3] FIG. 2 is a plan view schematically showing the dehumidifier of FIG. 1. [Figure 4] FIG. 2 is a front view schematically showing the dehumidifier of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. Each of the examples described below represents a preferred specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, the arrangement and connection of the components, steps (processes), and the order of steps shown in the following examples are merely examples and are not intended to limit the present disclosure. Therefore, among the components in the following examples, components that are not recited in the independent claims that represent the highest concept of the present disclosure will be described as optional components. Furthermore, in each figure, substantially identical components are assigned the same reference numerals, and redundant explanations will be omitted or simplified.

[0011] Furthermore, terms including ordinal numbers such as first and second are used to describe various components, but these terms are used only to distinguish one component from another and do not limit the components. [Example] A schematic configuration of a dehumidifier 100 according to an embodiment of the present disclosure will be described with reference to Figs. 1 to 4. Fig. 1 is a perspective view that schematically shows the dehumidifier 100 according to the embodiment. Fig. 2 is a side view that schematically shows the dehumidifier 100. This view is a cross-section taken along line AA in Fig. 1. Fig. 3 is a plan view that schematically shows the dehumidifier 100. This view is a cross-section taken along line BB in Fig. 1. Fig. 4 is a front view that schematically shows the dehumidifier 100.

[0012] 1, a dehumidifier 100 according to this embodiment has a box-shaped main body case 1 as an outer shell, which distinguishes the outside from the inside of the main body case 1. The main body case 1 is provided with an intake port 2 and an outlet port 4.

[0013] As shown in Fig. 2, the dehumidifier 100 includes a refrigeration cycle 3, a blower unit 6, and a control unit 46. The refrigeration cycle 3 is a refrigeration cycle in which a compressor 7, a condenser 8, an expander 9, and an evaporator 10 are connected in sequence in a ring, and uses a flammable refrigerant with a global warming potential of 10 or less. It is desirable for the refrigeration cycle 3 to use a refrigerant with low ozone depletion potential and global warming potential, and that is readily available for mass production. Therefore, the refrigeration cycle 3 uses a flammable refrigerant with a global warming potential of 10 or less.

[0014] The control unit 46 includes a control board unit 48 that configures an electronic circuit for controlling the refrigeration cycle 3 and the blower unit 6, and a control closed space unit 47 that isolates the control board unit 48 from the surroundings. The control closed space unit 47 functions as an outer shell that surrounds the control board unit 48. The control closed space unit 47 may be a rectangular parallelepiped box made of metal or resin.

[0015] In the main body case 1, the evaporator 10, the condenser 8, and the blower 6 are arranged in this order in the front-to-rear direction. In this specification, the directions of the device are defined as the directions when the dehumidifier is installed in a state where it can normally operate. In the dehumidifier 100, the side on which the evaporator 10 is located relative to the condenser 8 is referred to as the "front," the opposite side is referred to as the "rear," and the horizontal direction perpendicular to the front-to-rear direction is referred to as the left-to-right direction.

[0016] A view from the front and back is sometimes referred to as a "front view" or "rear view," a view from the left and right is sometimes referred to as a "side view," and a view from above is sometimes referred to as a "plan view." The air flow generated by the action of the blower 6 is sometimes referred to as "wind," and the upstream and downstream of the air flow are sometimes referred to as "upwind" and "downwind." These notations do not limit the position in which the dehumidifier 100 is used, and the dehumidifier 100 can be used in any position.

[0017] In the embodiment, the front-to-back width of the main body case 1 is smaller than the left-to-right width, and the top-to-bottom width is larger than the left-to-right width. With respect to the main body case 1, the part that forms the front outer surface is referred to as the "front surface," the part that forms the outer surface opposite the front surface is referred to as the "rear surface," the parts that form the left and right outer surfaces are referred to as the "side surfaces," and the part that forms the upper outer surface is referred to as the "top surface."

[0018] An operation unit 25 is provided on the front top surface of the main body case 1 for receiving input from the user and displaying information about the dehumidifier such as the operation mode and current humidity to the user.

[0019] In the embodiment, the air inlet 2 is arranged on the front surface 22 of the main body case 1. The air inlet 2 is a rectangular opening in the front surface 22 of the main body case 1 that draws in air from a direction perpendicular to the front surface 22, and is provided with a lattice. In the embodiment, the air outlet 4 is arranged on the upper rear side of the main body case 1. Above the air outlet 4, a louver 31 is provided that changes the direction of the air blown out from the air outlet 4.

[0020] Blower 6 includes a motor (not shown) and a fan (not shown) that is rotated by the motor to draw in and exhaust air. Blower 6 has an intake port 67, which is an opening for drawing in air, and an outlet port 68, which is an opening for sending out the air drawn in through intake port 67. Intake port 67 may be located on the surface facing condenser 8. Outlet port 68 opens upward.

[0021] The blower 6 acts mainly on the condenser 8 and the evaporator 10 of the refrigeration cycle 3. Hereinafter, the condenser 8 and the evaporator 10 are referred to as the dehumidifier 5. Specifically, the blower 6 draws in air that has passed through the dehumidifier 5 of the refrigeration cycle 3 through the intake port 67 and blows it out of the blower 6 through the outlet 68. In this way, the blower 6 blows the air outside the main body case 1 that it has drawn in through the intake port 2, passes it through the dehumidifier 5, and then blows it out of the main body case 1 through the outlet 4. This air passage is referred to as the air passage 34. The air passage 34 connects the intake port 2 and the outlet 4, and by the action of the blower 6, intake air 60 is drawn into the main body case 1 through the intake port 2, passes through the air passage 34, and is blown out of the outlet 4.

[0022] In the embodiment, the air passage 34 includes a first air passage 35 through which air sucked from the air inlet 2 by the blower 6 flows to the air outlet 4 via the evaporator 10. The air passage 34 may include another air passage in addition to the first air passage 35.

[0023] The flow of refrigerant in the refrigeration cycle 3 will now be described. The refrigerant pushed out from the compressor 7 flows through the discharge refrigerant pipe 81 as indicated by arrow M, is supplied to the upper end 852 of the heat transfer tube 85 of the condenser 8, and flows from top to bottom through the heat transfer tube 85 of the condenser 8. The refrigerant pushed out from the lower end 853 of the heat transfer tube 85 of the condenser 8 flows through the refrigerant pipe 82 as indicated by arrow N and is supplied to the expander 9. The refrigerant pushed out from the expander 9 flows through the refrigerant pipe 83 as indicated by arrow P and is supplied to the lower end 863 of the heat transfer tube 86 of the evaporator 10. The refrigerant supplied to the evaporator 10 flows from bottom to top through the heat transfer tube 86 of the evaporator 10. The refrigerant pushed out from the upper end 862 of the heat transfer tube 86 of the evaporator 10 flows through the suction refrigerant pipe 84 as indicated by arrow Q and flows into the compressor 7. The refrigeration cycle 3 is well known, so a detailed description thereof will be omitted. The evaporator 10 and the condenser 8 are arranged in this order from the upstream side to the downstream side of the air flow in the first air passage 35. The discharge refrigerant pipe 81 and the suction refrigerant pipe 83 may be referred to as refrigerant pipes 81, 83.

[0024] The dehumidifying operation of the dehumidifier 100 will now be described. As shown in Figures 2 and 4, intake air 60 passes through the evaporator 10, the condenser 8, and the blower 6, and is then blown out of the main body case 1 from the outlet 4. During this process, the intake air 60 is cooled by the evaporator 10, and the moisture in the intake air 60 condenses to produce condensed water W1. The condensed water W1 drips below the evaporator 10 and is then collected by the evaporator 10. The condensed water W1 is collected in a funnel-shaped drain pan 12 placed below the main body case 1. The drain pan 12 is a tray that receives the condensed water W1. The condensed water W1 collected in the drain pan 12 flows through a drain section 15 that leads from the drain pan 12 to the water storage tank 13, and flows into the water storage tank 13 placed below the drain pan 12, where it is stored. The water storage tank 13 can be easily attached and detached from the main body case 1.

[0025] The dried intake air 60 after condensation is blown out of the main body case 1 from the air outlet 4. By blowing out the dry air, the dehumidifier 100 reduces the humidity in the surrounding space.

[0026] The configuration of the embodiment will be further described. Because the refrigeration cycle 3 of the embodiment uses a flammable refrigerant, there is a possibility that the refrigerant may leak from brazed portions of the refrigerant flow passages. Specifically, in the dehumidifier 100, as shown in Fig. 2, the condenser 8 has a condenser brazed portion 87 to which a heat transfer tube 85, which extends from one end of the condenser 8 to the other end and turns back to allow the refrigerant to flow, is brazed, and the evaporator 10 has an evaporator brazed portion 88 to which a heat transfer tube 86, which extends from one end of the evaporator 10 to the other end and turns back to allow the refrigerant to flow, is brazed.

[0027] The discharge refrigerant pipe 81 extending from the compressor 7 is connected to an upper end 852 of a heat transfer pipe 85 of the condenser 8 by brazing, and the refrigerant pipe 82 extending upstream of the expander 9 is connected to a lower end 853 of the heat transfer pipe 85 by brazing. Reference numeral 87 denotes a condenser brazed portion 87 between the heat transfer pipe 85 and the refrigerant pipes 81 and 82. Because the refrigerant flows inside the condenser brazed portion 87, there is a possibility that the refrigerant may leak from this portion.

[0028] An upper end 862 of a heat transfer tube 86 of the evaporator 10 is connected by brazing to an intake refrigerant pipe 83 extending to the compressor 7, and a lower end 863 of the heat transfer tube 86 is connected by brazing to a refrigerant pipe 84 extending downstream of the expander 9. Reference numeral 88 denotes an evaporator brazed portion 88 between the heat transfer tube 86 and the refrigerant pipes 83, 84. Because refrigerant flows inside the evaporator brazed portion 88, there is a possibility that the refrigerant may leak from this portion.

[0029] To prevent ignition of leaking refrigerant, it is important to prevent the refrigerant from exceeding the flammability limit and reaching a flammable range near the control unit 46 and the blower unit 6, which could be sources of ignition. Therefore, in this embodiment, as shown in Figures 2 and 3, a partition wall 90 is provided to separate the internal space of the main body case 1 into a first space 1a and a second space 1b. The partition wall 90 includes a vertical partition wall 94 that extends mainly vertically. Note that the first space 1a and the second space 1b refer to spaces that are isolated from each other within the internal space of the main body case 1, and may include multiple discontinuous spaces.

[0030] 2 to 4, the control unit 46 and the blower unit 6 are disposed in the first space 1a, and the condenser brazing portion 87 and the evaporator brazing portion 88 are disposed in the second space 1b. With this configuration, even if refrigerant leaks from either the condenser brazing portion 87 or the evaporator brazing portion 88, it remains in the second space 1b and hardly flows into the first space 1a. This reduces the possibility that the refrigerant will become flammable near the control unit 46 and the blower unit 6, which could be a source of ignition. Specifically, the main bodies of the condenser 8 and the evaporator 10 are disposed on the first space 1a side of the vertical partition wall 94, and the condenser brazing portion 87 and the evaporator brazing portion 88 protrude from the vertical partition wall 94 on the second space 1b side.

[0031] 2, in this embodiment, the control unit 46 has a control closed space portion 47 that isolates the control board portion 48 from the surroundings, thereby further reducing the possibility that the refrigerant will become flammable near the control board portion 48. It is not essential that the first space 1a, the second space 1b, and the inner space of the control closed space portion 47 are strictly isolated from each other.

[0032] When the second space 1b is closed, the condenser brazing portion 87 or the evaporator brazing portion 88 Refrigerant leaking from the brazed portion may accumulate and become highly concentrated. For this reason, it is important to diffuse the leaked refrigerant. Therefore, the dehumidifier 100 has an opening 26 that connects the second space 1b with the outside of the main body case 1. By providing the opening 26, the air in the second space 1b, including the refrigerant leaking from the brazed portion, and the air outside the main body case 1 can flow in and out through the opening 26, thereby reducing the accumulation of refrigerant in the second space 1b.

[0033] In this embodiment, the compressor 7 is disposed in the second space 1b. In this case, the condenser brazed portion 87 and the evaporator brazed portion 88 can be easily disposed in the second space 1b. This prevents the areas around the control portion 46 and the blower portion 6, which may be ignition sources, from becoming flammable areas of the refrigerant.

[0034] For example, the height of opening 26 from the bottom surface of main body case 1 may be 50 mm or less, preferably 30 mm or less, and more preferably 10 mm or less. Furthermore, the horizontal width of opening 26 may be 2 mm to 50 mm, and the vertical width of opening 26 may be 2 mm to 50 mm. Multiple openings 26 may be provided.

[0035] It is considered to promote diffusion of the refrigerant leaked into the second space 1b from the opening 26. Therefore, in this embodiment, the separation wall 90 is provided with a communication passage 27 that communicates the second space 1b with the discharge port 68 of the blower 6. In this case, by providing the communication passage 27, when the blower 6 is operating, part of the air discharged from the blower 6 flows from the communication passage 27 into the second space 1b, and the refrigerant leaked into the second space 1b can be pushed out from the opening 26. Arrow 62 indicates the direction of the airflow caused by the action of the blower 6. The communication of the second space 1b with the discharge port 68 of the blower 6 includes not only the case where the second space 1b is directly connected to the discharge port 68 but also the case where the second space 1b is connected to a space that has a higher pressure than the second space 1b near the discharge port 68 due to the action of the blower 6.

[0036] In this embodiment, the communication passage 27 is provided above the opening 26. In this case, since the refrigerant is heavier than air and tends to accumulate downward, by providing the communication passage 27 above the opening 26, gas flows more smoothly from the communication passage to the opening when the device is stopped, and any leaked refrigerant can be more quickly diffused to the outside of the main body case 1, further reducing the possibility that the refrigerant in the second space 1b will become flammable.

[0037] In the embodiment, opening 26 is located in the lower part of main case 1. In this specification, the lower part of main case 1 refers to the part below the upper and lower bisector of main case 1. Refrigerant is heavier than air and tends to accumulate in the lower part, so by locating opening 26 in the lower part of main case 1, opening 26 can be located near the area where the refrigerant tends to accumulate. This allows smooth passage of the refrigerant and the outside air through opening 26, allowing the refrigerant to be quickly diffused and reducing the possibility of the refrigerant becoming flammable in second space 1b.

[0038] The size and shape of the communication passage 27 can be determined by experiment or simulation so as to obtain a desired refrigerant diffusion effect. A plurality of communication passages 27 may be provided.

[0039] In this embodiment, the suction port 2 and the opening 26 are arranged on different faces of the main body case 1. In this case, it is possible to reduce the stagnation area of ​​the flow of leaked refrigerant in the second space 1b, thereby quickly diffusing the leaked refrigerant to the outside of the main body case 1 and reducing the possibility of the refrigerant becoming flammable. As an example, the suction port 2 is provided on the front face 22 of the main body case 1, and the opening 26 is provided on the side face 21 of the main body case 1. This reduces the possibility that the refrigerant coming out from the opening 26 will be sucked into the main body case 1 from the suction port 2 or the rear face 24. The opening 26 may also be provided on the rear face 24 of the main body case 1.

[0040] In the first space 1a of the main body case 1, there is a drain for collecting condensed water W1 dripping from the evaporator 10. The first space 1a is provided with a drain pan 12 and a water storage tank 13 that stores condensation water W1 collected in the drain pan 12. The first space 1a has a tank case 96 that surrounds a tank space portion 1c in which the water storage tank 13 is housed. The tank case 96 is generally box-shaped, with openings on the bottom and on the front surface 22 side of the main body case 1. A portion of one side surface of the tank case 96 is part of the isolation wall 90. A portion of the other side surface of the tank case 96 may also be part of the side surface of the main body case 1.

[0041] The tank space 1c within the tank case 96 is a hollow extending inward from the front surface 22 of the main body case 1. When viewed from the front surface 22 of the main body case 1, the tank space 1c has a generally horizontally elongated rectangular shape. A water storage tank 13 is detachably provided within the tank space 1c. Condensed water W1 drips below the evaporator 10 and is collected in a funnel-shaped drain pan 12 located below the evaporator 10. The drain pan 12 is a tray that receives the condensed water W1. The condensed water W1 collected in the drain pan 12 flows through a drain section 15 that leads from the drain pan 12 to the water storage tank 13, and then flows into the water storage tank 13 located below the drain pan 12 and is stored therein. The drain section 15 penetrates the top surface of the tank case 96.

[0042] The tank case 96 supports the drain pan 12, and a portion of the tank case 96 is part of the partition wall 90. This allows the tank case 96 and the partition wall 90 to be integrally formed, improving the strength with which the tank case 96 supports the partition wall 90. Furthermore, because a portion of the tank case 96 is part of the partition wall 90, the number of parts can be reduced.

[0043] The evaporator 10 and the condenser 8 are provided above the drain pan 12, and the opening 26 is disposed below the drain pan. As a result, because the refrigerant is heavier than air, refrigerant leaking from the condenser brazed portion 87 and the evaporator brazed portion 88 tends to accumulate below the drain pan 12, and by positioning the opening 26 below the drain pan 12, the opening 26 can be disposed near the area where the refrigerant tends to accumulate. This allows the refrigerant and outside air to smoothly pass in and out through the opening 26, allowing the refrigerant to be quickly diffused and reducing the possibility of the refrigerant becoming flammable in the second space 1b.

[0044] The communication passage 27 is disposed above the evaporator 10 and the condenser 8. Because refrigerant is heavier than air and tends to accumulate downwards, by locating the communication passage 27 above the evaporator 10 and the condenser 8, gas flows more smoothly from the communication passage 27 to the opening 26 when the device is stopped, and leaked refrigerant can be diffused more quickly to the outside of the main body case 1, further reducing the possibility that the refrigerant in the second space 1b will become flammable.

[0045] The evaporator 10 and the condenser 8 are supported by a drain pan 12 and a separation wall 90 . As a result, the isolation wall 90, the tank case 96, the drain pan 12, the evaporator 10, and the condenser 8 are integrally formed, improving the strength for supporting the evaporator 10 and the condenser 8. Furthermore, there is no need to add new parts to support the evaporator 10 and the condenser 8, and as a result, the number of parts can be reduced.

[0046] The features of the dehumidifier 100 of this embodiment configured as described above will be described. The dehumidifier 100 includes a main body case 1 having an inlet 2 and an outlet 4, and an internal space divided by a partition wall 90 into a first space 1a and a second space 1b. Inside the main body case 1, there are provided a refrigeration cycle 3 using a flammable refrigerant having a global warming potential of 10 or less, which is formed by sequentially connecting a compressor 7, a condenser 8, an expander 9, and an evaporator 10 in a ring shape, a blower 6 acting on the refrigeration cycle 3, a control unit 46 controlling the refrigeration cycle 3 and the blower 6, and a first air passage 35 through which air drawn in from the inlet 2 by the blower 6 flows to the outlet 4 via the evaporator 10. The condenser 8 has a condenser brazing portion 87 to which a heat transfer tube 85 extending from one end of the condenser 8 to the other and folded back to allow the refrigerant to flow. The evaporator 10 has a brazing portion 87 to which a heat transfer tube 85 extending from one end of the evaporator 8 to the other and folded back to allow the refrigerant to flow. The evaporator brazed portion 88 has a heat transfer tube 86 through which the air flows brazed. The control portion 46 and the blower portion 6 are disposed in the first space 1a, and the condenser brazed portion 87 and the evaporator brazed portion 88 are disposed in the second space 1b, and have an opening 26 that connects the second space 1b with the outside of the main body case 1.

[0047] With this configuration, by locating the brazed parts, which may cause refrigerant leakage, in second space 1b, it is possible to prevent the refrigerant from becoming flammable near the control unit and the blower unit, which may be ignition sources. Also, by providing opening 26, refrigerant that leaks into second space 1b is diffused from opening 26 to the outside of main body case 1, thereby preventing the refrigerant in second space 1b from becoming flammable.

[0048] An outline of one aspect of the present disclosure is as follows.

[0049] [Item 1] The air conditioner comprises a main body case (1) having an inlet (2) and an outlet (4), and an internal space of which is divided into a first space (1a) and a second space (1b) by a partition wall (90), Inside the main body case (1), a refrigeration cycle (3) comprising a compressor (7), a condenser (8), an expander (9), and an evaporator (10) connected in series in a ring, and using a flammable refrigerant having a global warming potential of 10 or less; a blower (6) acting on the refrigeration cycle (3); a control unit (46) that controls the refrigeration cycle (3) and the blower unit (6); a first air passage (35) through which air drawn in from the air inlet (2) by the air blower (6) flows to the air outlet (4) via the evaporator (10); The condenser (8) has a condenser brazing portion (87) to which a heat transfer tube (85) extending from one end to the other end of the condenser (8) and folded back to carry a refrigerant is brazed; The evaporator (10) has an evaporator brazing portion (88) to which a heat transfer tube (86) extending from one end of the evaporator (10) to the other end and folded back to carry a refrigerant is brazed, The control unit (46) and the blower unit (6) are disposed in the first space (1a), The condenser brazing portion (87) and the evaporator brazing portion (88) are disposed in the second space (1b), A dehumidifier (100) having an opening (26) that connects the second space (1b) to the outside of the main body case (1).

[0050] [Item 2] Item 1. The dehumidifier (100) according to item 1, wherein the compressor (7) is disposed in the second space (1b).

[0051] [Item 3] 3. The dehumidifier (100) according to item 2, wherein the opening (26) is disposed in a lower portion of the main body case (1).

[0052] [Item 4] Item 3. The dehumidifier (100) according to item 3, wherein the partition wall (90) is provided with a communication passage (27) that connects the second space (1b) with the discharge port (68) of the blower (6).

[0053] [Item 5] 5. The dehumidifier (100) according to item 4, wherein the communication passage (27) is provided above the opening (26).

[0054] [Item 6] Item 4. The dehumidifier (100) according to item 3, wherein the suction port (2) and the opening (26) are arranged on different surfaces of the main body case (1).

[0055] [Item 7] The first space (1a) of the main body case (1) contains: a drain pan (12) for collecting condensed water dripping from the evaporator (10); a water storage tank (13) for storing the condensation water collected in the drain pan (12); The first space (1a) has a tank case (96) surrounding a tank space (1c) in which a water storage tank (13) is accommodated. The tank case (96) supports the drain pan (12), 5. The dehumidification device (100) according to item 4, wherein a portion of the tank case (96) is a portion of the isolation wall (90).

[0056] [Item 8] The evaporator (10) and the condenser (8) are provided above the drain pan (12), Item 8. The dehumidifier (100) according to item 7, wherein the opening (26) is located below the drain pan (12).

[0057] [Item 9] Item 10. The dehumidifier (100) according to item 8, wherein the communication passage (27) is located above the opening (26).

[0058] [Item 10] Item 10. A dehumidification apparatus according to item 9, wherein the evaporator (10) and the condenser (8) are supported by a drain pan (12) and a partition wall (90).

[0059] The present disclosure has been described above based on examples. These examples are merely illustrative, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present disclosure.

[0060] In the description of the embodiment, an example in which the suction port 2 is provided on the front surface 22 of the main body case 1 has been shown, but the present invention is not limited to this. The suction port 2 may also be provided on the side surface 21 of the main body case 1. [Explanation of symbols]

[0061] 1 main body case, 1a first space, 1b second space, 1c tank space portion, 2 Intake port, 3 refrigeration cycle, 4 outlet, 5 dehumidification section, 6 blower section, 7 compressor, 8 condenser, 9 expansion device, 10 evaporator, 12 drain pan, 13 water storage tank, 15 drain section, 21 side section, 22 front section, 24 rear section, 25 operation section, 26 opening, 27 communication passage, 31 louver, 34 air passage, 35 First air passage, 46 Control unit, 47 Control closed space unit, 48 Control board unit, 60 Intake air, 67 Intake port, 68 Discharge port, 81 Discharge refrigerant piping, 82, 83 Refrigerant piping, 84 suction refrigerant piping, 85, 86 heat transfer tubes, 87, 88 brazed parts, 90 isolation wall, 96 tank case, 100 dehumidifier.

Claims

1. a main body case having an inlet and an outlet, and an internal space of which is divided into a first space and a second space by a partition wall; The main body case contains: a refrigeration cycle including a compressor, a condenser, an expander, and an evaporator connected in sequence in a ring, and using a flammable refrigerant with a global warming potential of 10 or less; a blower section acting on the refrigeration cycle; a control unit that controls the refrigeration cycle and the blower unit; a first air passage through which air drawn in from the air inlet by the blower flows to the air outlet via the evaporator, the condenser has a condenser brazing portion to which a heat transfer tube extending from one end to the other end of the condenser and folded back, through which a refrigerant flows, is brazed; the evaporator has an evaporator brazing portion to which a heat transfer tube extending from one end to the other end of the evaporator and folded back to carry a refrigerant is brazed; the control unit and the blower unit are disposed in the first space, the condenser brazing portion and the evaporator brazing portion are disposed in the second space, A dehumidifying device having an opening that connects the second space to the outside of the main body case.

2. The dehumidifier according to claim 1 , wherein the compressor is disposed in the second space.

3. The dehumidifier according to claim 2 , wherein the opening is disposed in a lower portion of the main body case.

4. The dehumidifier according to claim 3 , wherein the partition wall is provided with a communication passage that connects the second space with the outlet port of the blower.

5. The dehumidifier according to claim 4 , wherein the communication passage is provided above the opening.

6. The dehumidifier according to claim 3 , wherein the suction port and the opening are disposed on different surfaces of the main body case.

7. Within the first space of the main body case, a drain pan for collecting condensed water dripping from the evaporator; a water storage tank for storing the condensation water collected in the drain pan, the first space has a tank case that surrounds a tank space portion in which the water storage tank is accommodated, the tank case supports the drain pan, The dehumidifying device according to claim 4 , wherein a part of the tank case is a part of the partition wall.

8. The evaporator and the condenser are provided above the drain pan, The dehumidifier according to claim 7 , wherein the opening is disposed below the drain pan.

9. The dehumidifier according to claim 8 , wherein the communication passage is disposed above the evaporator and the condenser.

10. The dehumidifying apparatus according to claim 9 , wherein the evaporator and the condenser are supported by the drain pan and the partition wall.

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