Cooling box

Abstract

To secure a ventilation path for heat radiation in a cooling storage attached to a predetermined installation space having an opening on a front face.SOLUTION: A cooling box according to one aspect of the present disclosure is attached to a predetermined installation space having an opening in a front surface. The cooling box includes a storage compartment, a machine compartment, and an exhaust passage. The machine chamber is located in a lower portion on a back side of the storage compartment, and includes a compressor and a fan of a refrigeration cycle. The exhaust passage includes an exhaust port located in an upper portion of a front surface of the cooling box, an upper space located above the storage compartment and communicating with the exhaust port, and a rear space located in an upper portion of a rear surface side of the storage compartment and communicating with the upper space and the machine compartment. The fan causes air in the machine room to flow from the rear space to the upper space and to be discharged from the exhaust port.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to refrigerators. [Background technology]

[0002] Patent Document 1 discloses a built-in refrigerator (cooling cabinet) that is suitable for incorporation into a kitchen storage unit and can reliably take in fresh air and exhaust it after heat exchange even when the drawer-structured storage unit is placed inside the refrigerator compartment. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-161565 Summary of the Invention [Problem to be solved by the invention]

[0004] Large built-in refrigerators are usually located in a dedicated refrigerator space, while smaller refrigerators may be retrofitted into spaces with openings in the front designed for storage, cooking utensils, or dishwashers, for example.

[0005] In this way, in a refrigerator that is installed in a specified installation space with an opening on the front, heat cannot be dissipated from the back side or from the top, bottom, left, or right sides, so it is desirable to forcibly ventilate the heat using a fan or the like and to conduct all intake and exhaust air from the front side.

[0006] However, in the refrigerator of Patent Document 1, it is necessary to provide dedicated air intake and exhaust flow path spaces on both the left and right sides, which reduces the left and right dimensions of the storage compartment such as the refrigerator compartment.

[0007] An object of the present disclosure is to ensure a ventilation path for heat dissipation in a refrigerator that is attached to a predetermined installation space having an opening on the front. [Means for solving the problem]

[0008] A refrigerator according to one aspect of the present disclosure is a refrigerator that is attached to a predetermined installation space having an opening on the front surface. The refrigerator includes a storage chamber, a machine chamber, and an exhaust flow path. The machine compartment is located at the bottom on the rear side of the storage compartment and includes a compressor and a fan for the refrigeration cycle. The exhaust flow path is An exhaust port located at the top front of the refrigerator; an upper space located above the storage chamber and communicating with the exhaust port; and a back space located at the upper part of the rear side of the storage chamber and communicating with the upper space and the machine chamber. The fan draws air from the rear space into the upper space within the machine room and expels it through the exhaust port. [Effects of the Invention]

[0009] According to one aspect of the present disclosure, a ventilation path for heat dissipation can be ensured in a refrigerator that is attached to a predetermined installation space having an opening on the front surface. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a perspective view showing an installation state of the refrigerator according to the embodiment. [Figure 2] FIG. 2 is a perspective view of the refrigerator according to the embodiment. [Figure 3] FIG. 2 is a vertical cross-sectional view showing the installation state of the refrigerator according to the embodiment. [Figure 4] FIG. 2 is a perspective view showing the inside of an upper space of the refrigerator according to the embodiment. [Figure 5] FIG. 2 is a rear perspective view showing the inside of an upper space of the refrigerator according to the embodiment. [Figure 6] FIG. 2 is a rear perspective view showing the inside of an exhaust air flow path and an intake air flow path of the refrigerator according to the embodiment. [Figure 7] FIG. 2 is a bottom perspective view showing an air supply flow path of the refrigerator according to the embodiment. [Figure 8] FIG. 2 is a bottom perspective view showing the air intake passage of the refrigerator of the embodiment with the door closed. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, each embodiment of the present disclosure will be described with reference to the drawings, in which the same components are denoted by the same reference numerals.

[0012] <Cooler> In this disclosure, the term "cooling cabinet" generally refers to a cabinet that has an internal space (storage compartment) that is kept at a temperature lower than the outside air temperature and that can lower the temperature of stored items. The cooling cabinet may be, for example, a refrigerator or a freezer. The cooling cabinet may have only one storage compartment or multiple storage compartments. When the cooling cabinet has multiple storage compartments, the multiple storage compartments may include at least two of a refrigerator compartment, a freezer compartment, a vegetable compartment, a chilled compartment, a partial compartment, etc.

[0013] The refrigerator of this embodiment is installed in a predetermined installation space. For example, refrigerator 1 can be installed in a predetermined installation space that is a part of the space of storage shelf 9 (an installation space for cooking appliances such as a built-in oven or a dishwasher, a cupboard, a storage rack, etc.) (see Figures 1 and 3). The refrigerator of this embodiment is a so-called built-in type refrigerator. The predetermined installation space has an opening at least on the front surface to accommodate the refrigerator, i.e., the installation space is a recess having an opening on the front surface.

[0014] For example, when installing a refrigerator in the installation space of an existing storage shelf 9, the space is often separated from the floor and also from the back side to accommodate the placement of pipes for water, gas, etc. In other words, there is ample space on the bottom and back sides of the installation space for the refrigerator. In a refrigerator that can be installed in such an installation space, the machine compartment is located on the rear side (below), and air from the space below the refrigerator is drawn into the machine compartment, and heat is dissipated from the rear of the refrigerator to the space above, thereby maximizing the size of the storage compartment in the vertical and horizontal directions and allowing more space for the storage compartment to be taken up on the front side.

[0015] In this case, it is desirable to dissipate the heat generated in the machine room on the rear side at the front side of the refrigerator by forcibly ventilating it with a fan, etc. In particular, if the specified installation space has an opening only on the front side, it is preferable to exhaust all of the air from the front side.

[0016] First, the overall configuration of a refrigerator 1 according to a first embodiment will be described mainly with reference to Figures 1 to 3. The longitudinal cross-sectional view shown in Figure 3 is a cross-sectional view taken along line III-III in the front view shown small in the lower right of Figure 3.

[0017] In this specification, the surface on which the door is provided is referred to as the front or front face of the refrigerator 1. Then, based on the front face, the other faces of the refrigerator 1 are referred to as the back face, top face, bottom face, and side face, in accordance with the normal layout of the refrigerator 1. The orientation of each component that constitutes the refrigerator 1 may also be expressed based on the layout of the refrigerator 1.

[0018] The refrigerator 1 includes at least a storage chamber 10, a machine chamber 3, and an exhaust flow path.

[0019] The structural frame of the refrigerator 1 is mainly composed of an insulating box body 8. This insulating box body 8 forms a storage chamber 10 (such as a refrigerator chamber) which is a storage space of the refrigerator 1. It is preferable that at least the top surface of the insulated box 8 contains vacuum insulation material. This is because the upper side of the insulated box 8 is where a condenser, an exhaust flow path, and the like, which will be described later, are arranged, and therefore insulation performance is particularly required. From the viewpoint of improving energy-saving performance, it is preferable that the insulated box 8 contains vacuum insulation material not only on the top surface but also on surfaces other than the top surface.

[0020] A machine room 3 is formed at the bottom of the rear side (back side) of the storage room 10. The machine room 3 includes at least a compressor 31 and a fan 32 of a refrigeration cycle (see also FIG. 6). In the machine room 3, for example, part of the refrigeration cycle, a fan, a control unit, etc. are arranged.

[0021] The refrigeration cycle is mainly composed of a compressor 31, a condenser, an expander, an evaporator (cooler), etc. These components are connected via refrigerant pipes (refrigerant flow paths) through which the refrigerant flows. In this embodiment, the evaporator (not shown) is disposed in the heat-insulating box 8 above the compressor 31. The high-temperature side (flow path) of the refrigerant pipe, which runs from the compressor 31 to the expander (not shown), constitutes a heat dissipation pipe. That is, the heat dissipation pipes arranged in the exhaust flow path and the intake air flow path (described later) are part of the condenser, which is the heat dissipation side of the refrigeration cycle.

[0022] The refrigerator is not particularly limited, but a drawer-type refrigerator is an example. For example, the top surface of the storage shelf 9 forms a counter and is at about waist height. Therefore, a drawer-type refrigerator, where items are taken in and out from the top, is easier to use. 2, drawer-type refrigerator 1 includes, for example, refrigerator body 11 having storage space 11a with an opening, and drawer 12 supported so as to be freely inserted into and removed from storage space 11a of refrigerator body 11. In this case, storage room 10 is formed by closing the opening of storage space 11a of refrigerator body 11 with door 121 of drawer 12. The drawer 12 includes a front door 121 , a receiving frame 122 fixed to the door 121 , and a tray 123 supported by the receiving frame 122 . Drawer 12 is supported so as to be freely retractable in the front-to-rear direction by a rail mechanism 124 provided between receiving frame 122 and the inner wall of storage chamber 10 (cooling cabinet main body 11). Rail mechanism 124 may be, for example, a two-stage rail mechanism that allows drawer 12 to be pulled out farther, making it easier for the user to see from above.

[0023] (exhaust flow path) The refrigerator 1 is provided with an exhaust flow path for discharging the air in the machine room 3 to the front side.

[0024] 3 to 6, the exhaust flow path includes exhaust ports 142 and 143, upper space 14, and rear space 13. As shown in FIG. The exhaust port 142 is located at the top front of the refrigerator 1. The upper space 14 is located above the storage chamber 10 (above the heat-insulating box 8) and communicates with the exhaust ports 142 and 143. The rear space 13 is located at the upper part of the rear side of the storage room 10 (backward of the heat-insulating box 8 and above the fan 32), and communicates with the upper space 14 and the machine room 3.

[0025] The fan 32 is disposed below the back space 13 in the machine room 3. The fan 32 causes the air in the machine room 3 to flow from the back space 13 to the upper space 14 and to be discharged from the exhaust ports 142, 143. When the air whose temperature has risen in the machine room 3 is exhausted upward in this manner, the exhaust is promoted by convection, and therefore the exhaust by the fan 32 is performed smoothly.

[0026] In order to maintain the overall aesthetic appearance of the storage shelf 9, the door 121 is often composed of a rear panel to which a receiving frame 122 is attached and which essentially functions as a door, and a front panel with a decorative panel attached to the front surface of the rear panel. At the top edge of the door 121, the front panel protrudes significantly higher than the rear panel, making it difficult for the user to see the rear panel from eye level. Therefore, in the door 121 of the storage shelf 9, a space with a certain height is often formed behind the top edge of the door 121. In addition, the inner wall surfaces of the installation space located on the left and right side and bottom sides of the refrigerator 1 are often not flat because they may be equipped with metal fittings for fixing the equipment and storage sections intended for the storage shelf 9. For this reason, in the refrigerator 1 of this embodiment, the upper space 14, which can ensure a cross-sectional area and can easily ensure a planar (smooth) flow path, is used as the exhaust flow path. This makes it possible to ensure a ventilation path for heat dissipation while maintaining large dimensions in the vertical and horizontal directions of the storage chamber 10 without providing a separate flow path space dedicated to exhaust.

[0027] In the refrigerator shown in FIGS. 2 to 4, the upper space 14 that constitutes the exhaust flow path is a space surrounded by the upper surface of the heat-insulating box 8 and the upper duct 141.

[0028] However, the upper space 14 is not limited to this form, and may be a space surrounded by the upper surface of the insulated box body 8 and the upper inner wall surface of the installation space (for example, the lower surface 9a of the shelf board of the storage shelf 9 shown in Figure 3). In this case, the number of parts can be reduced and manufacturing costs can be reduced compared to when the above-described upper duct 141 is provided. Also, even if the height of the top surface of the heat-insulating box 8 is raised compared to when the upper duct 141 is provided, the same height of upper space can be secured, so the vertical size of the storage space 11a can be further increased. In this case, it is preferable to provide a seal line (not shown) that is a sealing member that seals the side (horizontal direction perpendicular to the exhaust direction) of the space between the top surface of the heat-insulating box 8 and the upper inner wall surface of the installation space. By providing the seal line, side leakage of exhaust air (flow into the side space 16, etc.) can be prevented, and air can be sent smoothly to the exhaust ports 142, 143.

[0029] The upper inner wall surface of the installation space located above the refrigerator 1 (for example, the top plate of the storage shelf 9 or the underside 9a of the shelf) may not be a smooth surface due to structures such as beams. In such cases, it is preferable to form a seal line to avoid the structures such as beams, or to provide an upper duct 141.

[0030] Furthermore, the exhaust flow path is a flow path dedicated to exhaust and is preferably separated from the intake flow path described below. In this case, exhaust efficiency (air circulation efficiency) is increased, and heat dissipation efficiency is also increased.

[0031] In the illustrated drawer-type refrigerator 1, exhaust from the exhaust flow path (upper space 14) is performed through an exhaust grill (exhaust ports 142, 143) formed integrally with an opening (exhaust port 143) provided at the top (door cap) of the door 121 and an opening (exhaust port 142) provided at the top front of the refrigerator body 11.

[0032] It is preferable to further provide a condenser 2 including a heat radiation pipe 21 in the exhaust flow path (back space 13, upper space 14). In this case, since air flows through the exhaust flow path, the heat dissipation efficiency of the condenser 2 is improved.

[0033] The condenser 2 preferably further includes a heat sink 22 in contact with the heat sink pipe 21 . In this case, the heat dissipation efficiency is improved by increasing the contact area between the condenser 2 and the air for heat dissipation by the heat dissipation plate 22. It is preferable that the heat dissipation plate 22 has a shape that extends in a plane parallel to the exhaust direction so as not to obstruct the flow of exhaust air.

[0034] The condenser 2 configured with such heat radiation pipes 21 and heat radiation plates 22 is less susceptible to problems caused by dust than so-called multi-fin type condensers and can be made thin, so it is suitable for installation in a thin space or a space that is closed off from the outside and is not easy to maintain, and is therefore suitable for installation in the upper space 14 or the back space 13.

[0035] A bent portion may be provided on at least a part of the edge of heat sink 22. In this case, the strength of heat sink 22 can be increased. Furthermore, by using the bent portion to attach heat sink 22 (condenser 2) to refrigerator body 11, the operability of positioning heat sink 22 when installing it in refrigerator body 11 can be improved.

[0036] The condenser 2 (heat dissipation pipe 21, heat dissipation plate 22) is preferably installed so as to be spaced apart from the inner wall surfaces of the exhaust flow path (back space 13, upper space 14) (see Figs. 3 and 6). In this case, the heat dissipation plate 22 may be spaced apart from the upper surface of the refrigerator 1 by a bent portion of the heat dissipation plate 22. In this way, the condenser 2 is preferably installed so as to be spaced apart from the inner wall surfaces of the exhaust flow path, particularly in the front and back surfaces of the heat dissipation plate 22. In this case, the contact area between the condenser 2 and the air for heat dissipation increases, thereby improving the heat dissipation efficiency.

[0037] Condenser 2 may also be provided in back space 13. The refrigerant piping upstream of the refrigerant flow is close to compressor 31 and has a relatively high temperature due to uncondensed refrigerant. On the other hand, the temperature of the refrigerant piping downstream is lower because it passes through condenser 2. Therefore, to minimize the adverse effect of the upstream piping heating the downstream piping, it is desirable to provide a hole in heat sink 22 between the upstream piping and the downstream piping to provide heat insulation. Furthermore, since the temperature of the downstream pipe has already dropped to near the ambient exhaust temperature, the downstream pipe may be set longer than the upstream pipe to increase the efficiency of heat dissipation.

[0038] In the drawer-type refrigerator 1, a grip 121a for pulling out and putting in the drawer 12 may be provided on the upper front surface of the door 121 of the drawer 12. Here, the grip portion 121a is preferably provided in the center in the left-right direction, which is the position where the drawer 12 can be most easily operated.

[0039] The exhaust ports 142, 143 (exhaust grills) are preferably provided in a portion other than the center in the left-right direction on the upper front surface. In this case, in the drawer-type refrigerator 1, the grip portion 121a can be provided at the center in the left-right direction on the upper front surface of the door 121, which is the position where the drawer 12 can be most easily operated.

[0040] The refrigerator 1 may be provided with an operating section 11b for operating the refrigerator 1. In the drawer-type refrigerator 1, it is preferable that an operating section 11b is provided in the front of the refrigerator body 11 above the storage space 11a, in the center in the left-right direction. In this case, exhaust ports 142, 143 can be provided in a location other than the center in the left-right direction on the upper front surface. This allows handle 121a to be provided in the center in the left-right direction on the upper front surface of door 121 in drawer-type refrigerator 1, which is the position that makes it easiest to operate drawer 12.

[0041] The position of the grip portion 121a is preferably a position overlapping with the operation portion 11b in a plan view seen from the front (a position corresponding to the operation portion 11b in the front-rear direction). In this case, in a plan view seen from the front, the area (width in the left-right direction) occupied by the grip portion 121a and the operating portion 11b can be minimized, and the area of ​​the exhaust ports 142 and 143 can be increased, thereby improving exhaust efficiency.

[0042] A control circuit unit 5 may be provided on the upper surface or rear surface of the storage chamber 10. The control circuit unit 5 is preferably provided in a location other than the exhaust flow path so as not to come into contact with high-temperature air. In the illustrated refrigerator 1, a control circuit unit 5 is provided in a portion of the upper back side of the storage chamber 10 in the left-right direction, and a rear duct 131 for forming the rear space 13 is provided in another portion of the left-right direction (see Figures 5 and 6).

[0043] In this case, the cross-sectional area of ​​the back space 13 (the cross-sectional area in a cross section perpendicular to the exhaust direction) is smaller than the cross-sectional area of ​​the upper space 14. In this case, the exhaust flow rate in the upper back space 13 located above the fan 32 (i.e., above the evaporation dish 33 (drain pan)) increases. This improves the cooling efficiency (heat dissipation efficiency). In addition, the evaporation dish 33 is more easily sucked up, making it easier to evaporate the drain water, thereby preventing moisture from accumulating due to the drain water.

[0044] (Air supply flow path) The refrigerator 1 preferably further includes an air supply passage for drawing air into the machine room 3 from the front side.

[0045] 6 to 8, the air intake flow path includes, for example, an air intake port 151 and a bottom space 15. The air intake port 151 is located at the lower front surface of the refrigerator 1 (see FIG. 8). The bottom space 15 is located below the storage chamber 10 and communicates with the air intake port 151. The bottom space 15 may be a gap formed between the legs 15b of the refrigerator 1 and the lower inner wall surface of the installation space (see Figs. 3 and 7).

[0046] The air intake path may further include side space 16. In this case, air 15a, 16a can be drawn in from both bottom space 15 and side space 16, making it difficult for negative pressure to occur in the air intake path, and air intake and exhaust by fan 32 can be performed smoothly. Furthermore, even if air cannot be supplied from bottom space 15 for some reason, air can still be supplied from side space 16, preventing the air intake and exhaust from stopping and causing the inside of machine room 3 to become too hot.

[0047] 7 and 8, the bottom space 15 and the machine room 3 are in communication with each other through an opening 34 provided at the boundary between them. Therefore, the fan 32 draws air 15a from the bottom space 15 into the machine room 3 through the opening 34. Furthermore, since the side space 16 and the machine room 3 are also in communication with each other, the air 16a in the side space 16 can also be sucked into the machine room 3 by the fan 32.

[0048] Also, as shown in Figure 8, even when the drawer 12 is stored in the storage space 11a (the door 121 is closed), that is, when the storage room 10 is sealed, an air intake port 151 is provided that communicates with the gap between the door 121 and the opening edge of the front of the installation space (the gap between the door 121 and the shelf of the storage shelf 9). The air supply port 151 also communicates with the bottom space 15. This ensures that air is supplied to the bottom space 15. Air supply port 151 also communicates with side space 16 via gaps on the left and right sides between door 121 and refrigerator body 11 (to the side of the seal portion between storage space 11a and door 121). This ensures that air can be supplied to side space 16. In storage shelves, a gap is often provided between door 121 and the opening edge at the front of the installation space even when door 121 is in the closed position so that the front panel (decorative panel) of door 121 does not collide with the opening edge at the front of the installation space. In this embodiment, this gap can be used as air intake vent 151. Note that an elastic body is sometimes provided between door 121 and the opening edge at the front of the installation space to prevent collision noise, but in this embodiment, it is preferable to remove this elastic body to ensure a passageway. In this embodiment, these configurations ensure that air for heat dissipation can be supplied reliably when the storage chamber 10 is sealed, which is the longest period of time.

[0049] In this manner, in this embodiment, the bottom space 15 and the side space 16, which are difficult to use as exhaust flow paths due to the presence of, for example, kitchen mounting brackets, are effectively utilized as air intake flow paths. This makes it possible to ensure a ventilation path for heat dissipation while maintaining large dimensions in the vertical and horizontal directions of the storage chamber 10 without providing a separate flow path space dedicated to air supply.

[0050] A condenser including a heat dissipation pipe (not shown) may be further provided in the air supply passage (bottom space 15, side space 16), thereby improving the heat dissipation efficiency of the condenser. In this case, the heat dissipation pipe is preferably a heat dissipation pipe located downstream of the heat dissipation pipe provided in the exhaust flow path (back space 13 and upper space 14). This is because the heat dissipation efficiency (cooling efficiency) is higher when the high-temperature upstream refrigerant is cooled by the relatively high-temperature air in the exhaust flow path that contains heat from the machine room 3, while the low-temperature downstream refrigerant is cooled by the relatively low-temperature air in the intake air flow path, than when the opposite is true.

[0051] [summary] A refrigerator according to one aspect of the present disclosure is a refrigerator that is attached to a predetermined installation space having an opening on the front surface. The refrigerator includes a storage chamber, a machine chamber, and an exhaust flow path. The machine compartment is located at the bottom on the rear side of the storage compartment and includes a compressor and a fan for a refrigeration cycle. The exhaust flow path is An exhaust port located at the front upper portion of the cooling cabinet; an upper space located above the storage chamber and communicating with the exhaust port; and a rear space located at an upper portion of the rear side of the storage chamber and communicating with the upper space and the machine chamber. The fan draws air from the rear space into the upper space within the machine chamber and discharges it through the exhaust port.

[0052] The cooling cabinet may further include a condenser including a heat radiation pipe in the exhaust passage.

[0053] The condenser may further include a heat sink in contact with the heat sink pipe.

[0054] The condenser may be installed so as to be spaced apart from an inner wall surface of the exhaust flow path.

[0055] The cross-sectional area of ​​the rear space is preferably smaller than the cross-sectional area of ​​the upper space.

[0056] The cooling cabinet further includes an air intake passage, The air supply passage is An air intake port located at the front lower part of the cooling cabinet; The storage chamber may include a bottom space located below the storage chamber and communicating with the air supply port.

[0057] The air intake passage may further include a condenser including a heat radiation pipe.

[0058] The exhaust port may be provided at a portion other than the center in the left-right direction of the upper front surface.

[0059] The refrigerator comprises a refrigerator body having a storage space with an opening, and a drawer supported so as to be freely inserted into and removed from the storage space of the refrigerator body, The refrigerator body may have an operating unit at the center in the left-right direction above the storage space on the front surface thereof.

[0060] The drawer has a door; The door may have a grip portion at an upper front surface thereof at a position overlapping the operating portion in a plan view seen from the front.

[0061] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims. Furthermore, configurations obtained by combining the configurations of different embodiments described in this specification are also included in the scope of the present disclosure. [Explanation of symbols]

[0062] 1 Refrigerator 10 Storage Room 11 Refrigerator body 11a Storage space 11b Operation section 12 drawers 121 Door 121a Gripping part 122 slots 123 Tray 13 Back space 131 Back duct 14 Upper space 141 Upper duct 142,143 Exhaust port 15 Bottom space 15a Air 15b leg 151 Air supply port 16 Side space 16a Air 2 Condenser 21 Heat dissipation pipe 22 Heat sink 3 Machine room 31 Compressor 32 fans 33 Evaporating dish 34 Aperture 5 Control circuit section 8. Insulated box 9 Storage Shed 9a below

Claims

1. A refrigerator that is attached to a predetermined installation space having an opening on the front, The device includes a storage chamber, a machine chamber, and an exhaust flow path. the machine room is located at a lower part on the rear side of the storage room and includes a compressor and a fan of a refrigeration cycle; The exhaust flow path is An exhaust port located at the front upper portion of the cooling cabinet; an upper space located above the storage chamber and communicating with the exhaust port; a rear space located at an upper portion of the rear side of the storage chamber and communicating with the upper space and the machine chamber; The fan causes the air in the machine chamber to flow from the rear space to the upper space and then discharge it from the exhaust port. Refrigerator.

2. The refrigerator according to claim 1 , further comprising a condenser including a heat dissipation pipe in the exhaust flow path.

3. The refrigerator according to claim 2 , wherein the condenser further includes a heat sink in contact with the heat sink pipe.

4. The refrigerator according to claim 2 , wherein the condenser is installed so as to be spaced apart from an inner wall surface of the exhaust passage.

5. The refrigerator according to claim 1 , wherein the cross-sectional area of ​​the back space is smaller than the cross-sectional area of ​​the upper space.

6. The cooling cabinet further includes an air intake passage, The air supply passage is An air intake port located at the front lower part of the cooling cabinet; a bottom space located below the storage chamber and communicating with the air supply port; The refrigerator according to claim 1.

7. The refrigerator according to claim 1 , further comprising a condenser including a heat dissipation pipe in the air supply passage.

8. The refrigerator according to claim 1 , wherein the exhaust port is provided in a portion other than a central portion in the left-right direction of the upper front surface.

9. The refrigerator comprises a refrigerator body having a storage space with an opening, and a drawer supported so as to be freely inserted into and removed from the storage space of the refrigerator body, The refrigerator according to claim 1 , further comprising an operating section at a center in the left-right direction above the storage space on the front surface of the refrigerator body.

10. The drawer has a door; The refrigerator according to claim 9 , further comprising a grip portion at an upper portion of the front surface of the door, the grip portion being located at a position overlapping with the operating portion in a plan view seen from the front.

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