WO2015104952A1

WO2015104952A1 - Open showcase

Info

Publication number: WO2015104952A1
Application number: PCT/JP2014/082983
Authority: WO
Inventors: 茂樹石原; 基二植木; 菊地　昭治; 俊介内田
Original assignee: 東芝キヤリア株式会社
Priority date: 2014-01-08
Filing date: 2014-12-12
Publication date: 2015-07-16
Also published as: JPWO2015104952A1; JP2019074308A; CN105992535B; JP6755929B2; CN105992535A

Abstract

This open showcase is provided with a product display chamber (4), a cooling unit, a drain pan (35), a heating unit, and a support mechanism (40). The cooling unit includes a refrigeration cycle configured by connecting a compressor (15), a condenser (16), a decompressor (17) and an evaporator (23), and cools the air in the display chamber (4). The drain pan (35) receives the drainage water generated in the evaporator (23). The heating unit is housed in the drain pan (35), and heats the drainage water in the drain pan (35). The support mechanism (40) supports the drain pan (35) to allow removal and insertion thereof without interfering with the heating unit.

Description

Open showcase

Embodiments of the present invention relate to an open showcase that includes a display room in which a plurality of shelves for product placement are stored, and that cools products in the display room.

There is known an open showcase that has a display room in which a plurality of shelves for placing products is stored and cools the products in the display room. This open showcase includes a refrigeration cycle configured by connecting a compressor, a condenser, a decompressor, and an evaporator, and circulates the air in the display room through the evaporator, thereby allowing the air in the display room to be circulated. Cooling.

Moisture contained in the air in the display room is condensed when passing through the evaporator, and becomes water droplets and adheres to the surface of the evaporator. The water droplets adhering to the surface of the evaporator flow down from the evaporator as drain water, and a part of them freezes to become frost. The frost is melted by a defrosting operation that is performed periodically or as necessary, and drains into the drainage from the evaporator.

In Japanese Patent Application Laid-Open No. 2010-71572, which is a prior art, drain water flowing down from an evaporator is received by a first drain pan, and drain water flowing out from the first drain pan is received by a second drain pan. In the first drain pan, an outlet side refrigerant pipe of a condenser (radiator) is arranged in order to improve cooling efficiency. In the second drain pan, a discharge side refrigerant pipe of the compressor is arranged to promote the evaporation of the drain water.

However, these first and second drain pans are fixed and cannot be easily put in and out. For this reason, mold and bacteria may be generated in the drain water collected in the first and second drain pans. This also causes a strange odor.

An object of an embodiment of the present invention is to provide an open showcase in which a drain pan that accepts drain water can be easily taken in and out, whereby drain water in the drain pan can be easily discharged and the drain pan can be easily cleaned. Is to provide.

The open showcase according to claim 1 is provided with a display room for goods and a cooling unit, a drain pan, a heating unit, and a support mechanism. The cooling unit includes a refrigeration cycle configured by connecting a compressor, a condenser, a decompressor, and an evaporator, and the drain pan receives drain water flowing down from the evaporator. The said heating part is accommodated in the said drain pan, and heats the said drain water in the drain pan. The support mechanism supports the drain pan so that it can be inserted and removed without interfering with the heating unit.

The figure which looked at the main part of one embodiment from the front side. The figure which looked at the main body of the embodiment from the side. The figure which looked at the structure in the main body of the embodiment, and was seen from the side. The perspective view of the drain processing unit and its peripheral part in the embodiment. The figure which looked at the structure of FIG. 4 partially, and was seen from the side. The perspective view which shows the structure of the drain pan in the same embodiment, the high temperature refrigerant | coolant piping P, and a support mechanism. The perspective view which decomposes | disassembles and shows the structure of the drain pan in the same embodiment, a support member, the high temperature refrigerant | coolant piping P, and a support mechanism. The figure which looked at the structure inside the machine room in the same embodiment from the side surface side. The figure which shows concretely the mutual relationship of the drain pan in the same embodiment, a support member, the high temperature refrigerant | coolant piping P, and a support mechanism. The perspective view which shows a mode that the drain pan in the embodiment is pulled out from a machine room. The perspective view which shows the state by which the drain pan in the same embodiment was pulled out completely from the machine room.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Configuration of the main body of the open showcase]
FIG. 1 is a diagram of the appearance of the open showcase viewed from the front, and FIG. 2 is a diagram of the exterior of the open showcase viewed from the side. The display room of the open showcase is a three-sided open type in which the front, left, and right sides are open.

The main body 1 of the open showcase has a rectangular shape in front view and plan view. The main body 1 includes a top plate 2 at the top, a machine room 3 at the bottom, and a product display chamber 4 between the top plate 2 and the machine room 3. The back surface 1a of the main body 1 is constituted by a rectangular flat plate.

The shape of the top plate 2 as viewed from the front is a rectangle having a thin thickness in the vertical direction and a dimension of Fa in the horizontal direction. A ceiling surface 4 b of the display chamber 4 is formed by the lower surface of the top plate 2. The shape of the machine room 3 viewed from the front is a rectangle having a certain thickness in the vertical height direction and a dimension in the horizontal width direction of Fa. The upper surface of the machine room 3 is also a bottom surface 4 c of the display room 4. The shape of the display chamber 4 viewed from the front is a rectangle that is long in the vertical height direction and whose dimension in the horizontal width direction is Fa.

The shape of the top plate 2 viewed from the side surface is a rectangular shape having a small thickness in the vertical height direction and protruding from the back surface 1a to the front surface side and having a predetermined dimension in the front-rear depth direction. The shape of the machine room 3 viewed from the side surface is a rectangular shape having a certain thickness in the vertical height direction and a dimension Fb in the front-rear depth direction. The dimension Fb in the depth direction of the machine room 3 is slightly longer than the dimension in the depth direction of the top plate 2.

The back surface 4a on the back side of the display chamber 4 is disposed with a gap of a predetermined dimension between the back surface 4a and the back surface 1a of the main body 1. The upper part of the back surface 4a is substantially parallel to the back surface 1a. The part excluding the upper part of the back surface 4a is slightly inclined so as to gradually protrude toward the front side as it goes downward.

The display room 4 is a three-sided open type in which the three surfaces of the front surface, the left surface, and the right surface except for the back surface 4a, the ceiling surface 4b, and the bottom surface 4c are open, and includes a front surface opening 401, a left surface opening 402, and a right surface. An opening 403 is provided. The display chamber 4 is exposed outside the main body 1 through the front opening 401, the left side opening 402, and the right side opening 403.

The dimensions in the left-right width direction of the main body 1 are the same Fa as the dimensions in the left-right width direction of the top plate 2 and the dimensions in the left-right width direction of the machine room 3. The dimension of the main body 1 in the depth direction (front-rear direction) is the same Fb as the dimension of the machine room 3 in the depth direction (front-rear direction).

Note that a notification unit 9 for notifying that drain water in a maintenance tray 36 (described later) is almost full is disposed on the top surface of the top plate 2.

[Internal configuration of main body 1]
Next, the internal configuration of the main body 1 will be described. FIG. 3 is a cross-sectional view of the structure inside the main body 1 viewed from the side.

As described above, the back surface 4a of the display chamber 4 is inclined so as to gradually protrude toward the front opening 401 from the ceiling surface 4b to the bottom surface 4c. On the back surface 4a, a plurality of, for example, four stages of product placement shelves 5 are vertically arranged at predetermined intervals. The dimension in the left-right width direction of each shelf 5 is slightly shorter than the dimension in the left-right width direction of the back surface 4a. Each shelf 5 protrudes toward the front opening 401 while maintaining a substantially parallel state with the bottom surface 4c. On these shelves 5, merchandise for sale such as a large number of can drinks and bottle drinks are placed and displayed. The space existing between the shelves 5 is a space for storing products and a cooling space on each shelf 5.

On the back surface 4a of the display chamber 4, cold air outlets 7 for blowing cooling air (called cold air) are formed at positions corresponding to the cooling spaces between the shelves 5, respectively. These cold air outlets 7 are openings formed in a U shape, as indicated by broken lines in FIG. The cold air blown out from these cold air outlets 7 is sent to the products on each shelf 5.

Specifically, the cold air outlet 7 is a horizontally long extending in the left-right width direction between the left side blowing part 7ax and the right side blowing part 7ay that are vertically long in the vertical direction and the side blowing parts 7ax, 7ay. A center outlet 7b having a shape. The left side blowing portion 7ax is formed at the left end edge portion 4x of the back surface 4a. The left edge 4x is adjacent to the left side opening 402. The right side blowing portion 7ay is formed at the right end edge portion 4y of the back surface 4a. The right edge 4y is adjacent to the right side opening 403. The center blowing portion 7b is disposed at a position facing the upper portion of the cooling space and is continuous with the upper portions of the side blowing portions 7ax and 7ay. The dimensions in the left-right width direction of the openings of the side blowing portions 7ax and 7ay are substantially equal to the dimensions in the vertical direction of the opening of the center blowing portion 7b. The dimension in the vertical height direction of the opening of the side blowing parts 7ax, 7ay is several times the dimension in the vertical height direction of the opening of the center blowing part 7b.

The dimension from the left end to the right end of each cold air outlet 7 is slightly larger than the dimension of each shelf 5 in the left-right width direction. With this configuration, the side blowing portions 7ax and 7ay correspond to both ends in the left-right width direction of each shelf 5 and the outside thereof. As a result, the cold air blown out from the side blowing portions 7ax, 7ay flows so as to touch the products placed on both ends of each shelf 5 in the left-right width direction.

Even with the three-sided open display chamber 4 having the front opening 401, the left side opening 402, and the right side opening 403, the products on each shelf 5 are made uniform and efficient by blowing out such cold air. Can cool well.

On the other hand, as shown in FIGS. 2 and 3, an illumination unit 8 using a fluorescent lamp or a light emitting diode (LED) is arranged on the top plate 2 constituting the ceiling surface 4 b of the display room 4. The illuminating unit 8 has a length along the upper edge of the front opening 401 of the display chamber 4, illuminates the display chamber 4, and illuminates the front surface of the top plate 2. On the front surface of the top plate 2, the name of the product accommodated in the display room 4 is written. The description of this product name emerges due to the illumination of the illumination unit 8.

As shown by a broken line in FIG. 1, an air curtain outlet 10 is formed on the ceiling surface 4 b of the display chamber 4. The air curtain outlet 10 is a U-shaped opening along the front opening 401, the left side opening 402, and the right side opening 403.

Specifically, the air curtain outlet 10 is a horizontally long extending in the left-right width direction between the left side outlet 10ax and the right side outlet 10ay that are elongated in the longitudinal direction and between the side outlets 10ax, 10ay. And a center outlet 10b having a shape. The left side blowing portion 10ax is formed along the upper edge of the left side opening 402. The right side blowing portion 10ay is formed along the upper edge of the right side opening 403. The center blowing portion 10b is formed along the upper edge of the front opening 401 and is connected to the front side end portions of the side blowing portions 10ax and 10ay.

The cool air blown from the center blowing portion 10b flows from the top to the bottom along the front opening 401 of the display chamber 4. The cold air blown out from the side blowing portions 10ax, 10ay flows downward along the left side opening 402 and the right side opening 403 of the display chamber 4.

The positions of the side blowing parts 10ax, 10ay are outside the positions of the side blowing parts 7ax, 7ay of the cold air outlet 7. The position of the center blowing portion 10b is outside the position of the front end portion of each shelf 5. Therefore, the cold air blown from the side blowing portions 10ax, 10ay and the center blowing portion 10b flows downward without hitting the cold air blown from the side blowing portions 7ax, 7ay, and without hitting each shelf 5. The flow of cool air blown out from the side blowing portions 10ax, 10ay and the center blowing portion 10b becomes an air curtain along the front opening 401, the left opening 402, and the right opening 403 of the display chamber 4. By this air curtain, entry of external air from the outside of the main body 1 to the display chamber 4 is prevented.

As shown in FIG. 3, a duct 11 communicating with the air curtain outlet 10 is formed inside the top plate 2. The duct 11 guides the cool air supplied from the duct 12 on the back side of the back surface 4 a to the air curtain outlet 10.

On the other hand, a suction port 13 is formed on the bottom surface 4 c of the display chamber 4. The suction port 13 is a U-shaped opening along the front surface opening 401, the left side surface opening 402, and the right side surface opening 403, and is blown out from the cold air blown out from each cold air outlet 7 and the air curtain outlet 10. Inhale cool air for the air curtain.

Specifically, as shown by a broken line in FIG. 1, the suction port 13 includes a vertically long left side suction portion 13ax and a right side suction portion 13ay that are long in the front-rear depth direction, and the side suction portions 13ax and 13ay. And a horizontally elongated center suction portion 13b extending in the left-right width direction. The left side suction portion 13ax is formed along the lower edge 402b of the left side opening 402. The right side suction portion 13ay is formed along the lower edge 403b of the right side opening 403. The center suction portion 13b is formed along the lower edge of the front opening 401 and is continuous with the front side end portions of the side suction portions 13ax and 13ay.

The positions of the side suction portions 13ax, 13ay and the center suction portion 13b of the suction port 13 are outside the peripheral edge portion of each shelf 5. The positions of the side suction portions 13ax, 13ay of the suction port 13 are outside in the left-right width direction than the positions of the side blowout portions 7ax, 7ay of each cold air outlet 7. Due to this positional relationship, there is no obstacle on the cool air flow path between the air curtain outlet 10 and the suction port 13, and the air curtain cool air blown from the air curtain outlet 10 is smoothly and efficiently supplied to the suction port 13. Well inhaled. As a result, the air curtain can be formed stably.

Further, as shown in FIG. 3, a partition plate 19 formed of a heat insulating material such as polystyrene foam is disposed in a space between the back surface 4a of the display chamber 4 and the back surface 1a of the main body 1. The partition plate 19 divides the space between the back surface 4a and the back surface 1a into a cool air circulation duct 12 and an exhaust duct 20. These

ducts

12 and 20 extend along the vertical height direction of the main body 1.

The upper part of the duct 12 communicates with the air curtain outlet 10 via the duct 11 in the top plate 2. The lower part of the duct 12 communicates with the duct 14 a in the machine room 3. A midway portion of the duct 12 communicates with each cold air outlet 7. The upper portion of the duct 20 communicates with an opening portion 21 formed between the top plate 2 and the back surface 1a. The lower part of the duct 20 communicates with the internal space of the machine room 3.

In the machine room 3, a compressor 15, a condenser 16, an expansion valve (decompressor) 17, and a fan 18 are arranged. In the internal space of the machine room 3, the partition wall 14 is disposed in a state parallel to the upper surface of the machine room 3 (the bottom surface 4 c of the display chamber 4). By this partition wall 14, a duct 14 a is formed on the back side of the upper surface of the machine room 3. The duct 14 a communicates the suction port 13 and the lower part of the duct 12. A fan 22 for circulating cold air is arranged in the duct 14a. The fan 22 sucks air from the suction port 13 and sends the sucked air to the duct 12. An evaporator 23 is disposed below the duct 12.

The compressor 15, the condenser 16, the expansion valve 17, and the evaporator 23 are sequentially connected by a refrigerant pipe to constitute a refrigeration cycle. The compressor 15 sucks in the refrigerant, compresses it, and discharges it. The high-temperature and high-pressure gas refrigerant discharged from the compressor 15 flows to the condenser 16. The gas refrigerant that has flowed to the condenser 16 is condensed by exchanging heat with the outside air sucked by the operation of the fan 18. The liquid refrigerant flowing out of the condenser 16 flows to the evaporator 23 through the expansion valve 17 that is a decompressor. The liquid refrigerant that has flowed to the evaporator 23 is evaporated by exchanging heat with the air sent from the fan 22. The gas refrigerant flowing out from the evaporator 23 is sucked into the compressor 15.

In the duct 12, guide plates 25 are arranged at the upper edge of each cold air outlet 7. These guide plates 25 are L-shaped, the standing portion is fixed to the back surface of the back surface 4a, and the flat surface portion projects into the internal space of the duct 12. By these guide plates 25, a part of the cool air passing through the duct 12 is guided to each cool air outlet 7.

As shown by a broken line in FIG. 3, the front surface of the machine room 3 is open, and the front cover plate 28 is attached to the opening in a freely openable / detachable manner. Both side surfaces of the machine room 3 are also opened, and

side cover plates

29x and 29y are attached to these openings so as to be freely opened and closed (detachable). The front cover plate 28 and the

side cover plates

29x and 29y can be removed as needed during maintenance of the components in the machine room 3.

The front cover plate 28 has a number of punching holes 27 for introducing outside air. By the operation of the fan 18, outside air is introduced into the machine chamber 3 through the punching holes 27. The introduced outside air rises in temperature through the condenser 16 and further cools the compressor 15 to become high temperature. The hot air flows through the duct 20 to the opening 21 and is discharged out of the main body 1 from the opening 21.

[Configuration of Drain Processing Unit 30]
A refrigeration cycle component such as the compressor 15 is disposed on the bottom surface 50 of the machine room 3, and a drain processing unit 30 is disposed. The configuration of the drain processing unit 30 will be described with reference to FIGS. FIG. 4 is a perspective view of the drain processing unit 30 and its peripheral part. FIG. 5 is a partial cross-sectional view of the configuration of FIG. 4 viewed from the side.

The partition wall 14 forming the upper surface of the machine room 3 (the bottom surface 4 c of the display chamber 4) is formed integrally with the partition plate 19 by the same heat insulating material as the partition plate 19.

Between the evaporator 23 and the partition wall 14 in the duct 12, a blow guide plate 31 is disposed. The air guide plate 31 has a shape extending along the left-right width direction of the duct 12, and guides the air blown by the fan 22 to the evaporator 23. A drainage hole 32 for discharging drain water flowing down from the evaporator 23 to the duct 14 a side is formed at the left end portion of the air blowing guide plate 31 and at a position in contact with the upper surface of the partition wall 14. A drainage portion 33 for discharging drain water flowing from the drainage hole 32 to the lower surface side of the partition wall 14 is formed at the left end portion of the partition wall 14.

The drainage part 33 includes a through-hole penetrating the partition wall 14 from the upper surface side to the lower surface side, and a drainage pipe 33a fitted in the through-hole. The lower part of the drain pipe 33a protrudes below the lower surface of the partition wall 14. Due to this protrusion, the drain water flowing down from the drain pipe 33 a does not adhere to the lower surface of the partition wall 14. In addition, you may form the guide groove for flowing drain water efficiently in the position between the drainage hole 32 and the drainage part 33 in the upper surface of the partition 14. FIG.

A preliminary drain container 34 is disposed below the drainage part 33. A drain pan 35 is disposed at a position adjacent to the preliminary drain container 34 and at a position substantially the same height as the preliminary drain container 34. The maintenance tray 36 is placed below the preliminary drain container 34 and the drain pan 35 and at a predetermined position on the bottom surface 50 of the machine chamber 3. The preliminary drain container 34, the drain pan 35, and the maintenance tray 36 are box-shaped or dish-shaped containers each having a rectangular opening on the upper surface.

In addition, when the internal space of the machine room 3 is viewed from the front side of the main body 1, the condenser 16 is disposed in a state of being close to the right end portion of the internal space. In a region between the left end portion and the condenser 16 in the internal space of the machine room 3, a preliminary drain container 34 and a maintenance tray 36 are arranged side by side.

The dimensions of the spare drain container 34 in the left-right width direction are the same as the dimensions of the maintenance tray 36 in the left-right width direction. The dimension of the preliminary drain container 34 in the depth direction is longer than the dimension of the condenser 16 in the depth direction. The dimension in the depth direction of the maintenance tray 36 is longer than the dimension in the depth direction of the spare drain container 34 and longer than the dimension in the depth direction of the condenser 16. Of the dimensions of the maintenance tray 36 in the depth direction (front-rear direction), the dimension of the portion facing the drain pan 35 is the same as or larger than approximately half the dimension of the drain pan 35. The dimension in the depth direction (front-rear direction) of the maintenance tray 36 may be a dimension that reaches the back surface of the machine room 3 (the back surface 1a of the main body 1).

The drain pan 35 is arranged from the left region of the internal space of the machine room 3 to the region between the back surface of the condenser 16 and the back surface of the machine room 3. The shape combining the drain pan 35 and the preliminary drain container 34 is substantially L-shaped along a part of the back surface of the condenser 16 and the left side surface of the condenser 16 when viewed from above.

The height position of the bottom surface of the preliminary drain container 34 and the height position of the bottom surface of the drain pan 35 are the same. The size of the preliminary drain container 34 in the vertical height direction is larger than the size of the drain pan 35 in the vertical height direction. A recess is formed in a part of the upper edge of the back surface of the preliminary drain container 34, and a rain gutter-shaped drain water guide 34a is attached to the recess. The drain water guide 34 a has a shape extending from the back surface of the preliminary drain container 34 to the upper surface opening of the drain pan 35, and guides drain water existing in the upper part of the preliminary drain container 34 to the drain pan 35. When the drain water level accumulated in the preliminary drain container 34 reaches the drain water guide 34a, the drain water in the preliminary drain container 34 flows into the drain water guide 34a. The drain water that has flowed into the drain water guide 34 a flows down into the drain pan 35. Accordingly, the drain water accumulated in the preliminary drain container 34 moves to the drain pan 35 without overflowing from the preliminary drain container 34.

That is, the preliminary drain container 34 receives the drain water flowing down from the evaporator 23 and guides a drain water of a predetermined amount or more out of the received drain water to the drain pan 35.

The overflow pipe 35p is erected on the bottom surface of the drain pan 35 at a position facing the maintenance tray 36 and passing through the bottom surface. The height position of the upper end (one end) of the overflow pipe 35p is lower than the height position of the upper surface opening of the drain pan 35. The lower end (the other end) of the overflow pipe 35 p protrudes downward from the bottom surface of the drain pan 35. When the level of the drain water accumulated in the drain pan 35 reaches the upper end of the overflow pipe 35p, the drain water in the drain pan 35 flows into the overflow pipe 35p. The drain water flowing into the overflow pipe 35p flows down to the maintenance tray 36. Accordingly, the drain water accumulated in the drain pan 35 moves to the maintenance tray 36 without overflowing from the drain pan 35. Since the lower end of the overflow pipe 35p protrudes downward from the bottom surface of the drain pan 35, the drain water flowing down from the overflow pipe 35p does not adhere to the bottom surface of the drain pan 35.

A drain water sensor 36 a is attached to the inner peripheral surface of the maintenance tray 36. The drain water sensor 36a detects when the drain water in the maintenance tray 36 reaches a predetermined height position, and wirelessly transmits a detection signal to that effect. The wirelessly transmitted detection signal is received by the notification unit 9 disposed on the top 2. When the notification unit 9 receives the detection signal from the drain water sensor 36a, the notification unit 9 continuously or intermittently emits light from a built-in light emitter such as a light emitting diode. This light emission notifies the user that the drain water in the maintenance tray 36 is almost full.

On the other hand, the front surface of the preliminary drain container 34 includes a fixing portion 34b extending vertically upward. The lower portion of the support plate 37 is screwed and fixed to the upper portion of the fixing portion 34b, and the fixing piece 37a on the upper portion of the support plate 37 abuts on the lower surface of the partition wall 14 and is screwed and fixed.

The back surface of the preliminary drain container 34 includes a hook portion 34c that extends vertically upward. The upper part of the hook part 34 c is a locking piece that is bent toward the back side of the machine room 3. The locking piece of the hook portion 34 c is supported on the lower surface of the partition wall 14 via a plate-like hanging plate 38. The suspension plate 38 has a locking piece bent at the front side of the machine room 3 at the lower part and a fixing piece bent at the back side of the machine room 3 at the upper part. The upper fixing piece of the suspension plate 38 is screwed and fixed to the lower surface of the partition wall 14, and the upper locking piece of the hook portion 34 c is placed on the lower locking piece of the suspension plate 38. Locked.

The hook part 34 c of the preliminary drain container 34 is only placed on the locking piece at the lower part of the suspension plate 38. Therefore, by removing the front cover plate 28 of the machine room 3 and further removing the screwing between the fixing portion 34b of the auxiliary drain container 34 and the support plate 37, the auxiliary drain container 34 can be pulled out to the front side of the main body 1. Is possible.

The maintenance tray 36 is only placed below the preliminary drain container 34 and the drain pan 35 and at a predetermined position on the bottom surface 50 of the machine room 3. Therefore, the maintenance tray 36 can be pulled out to the front side of the main body 1 simply by removing the front cover plate 28 of the machine room 3.

[Configuration of Drain Pan 35 and Support Mechanism 40]
The drain processing unit 30 includes a blowing guide plate 31, a drain hole 32, a drainage portion 33, a preliminary drain container 34, a drain pan 35, a maintenance tray 36, a support plate 37, and a suspension plate 38, and is shown in FIGS. A support mechanism 40 and a high-temperature refrigerant pipe (also referred to as a hot gas pipe) P are included. FIG. 6 is a perspective view showing the configuration of the drain pan 35, the high-temperature refrigerant pipe P, and the support mechanism 40. FIG. 7 is an exploded perspective view showing the configuration of FIG.

The drain pan 35 is a container formed in a box shape by the front surface portion 35x, the back surface portion 35y, the left side surface portion 35a, the right side surface portion 35b, and the bottom surface portion 35c. The drain pan 35 has an opening on the top surface and is drained from the preliminary drain container 34. Is received through its top opening.

The overflow pipe 35p is erected at a position near the front surface part 35x in the bottom surface part 35c. The dimensions in the front-rear depth direction (XX direction in FIG. 7) corresponding to the insertion direction and the pull-out direction of the drain pan 35 are longer than the dimensions in the left-right width direction (YY direction shown in FIG. 7).

The support mechanism 40 supports the drain pan 35 so that it can be inserted and removed without interfering with the high-temperature refrigerant pipe P. Specifically, the support mechanism 40 bypasses the high-temperature refrigerant pipe P and holding

mechanisms

45 and 46 described later so that the drain pan 35 does not come into contact with or collide with the high-temperature refrigerant pipe P when the drain pan 35 is put in and out. The drain pan 35 is slidably supported. The support mechanism 40 is disposed in a region between the back surface of the condenser 16 and the back surface of the machine room 3 and on the bottom surface 50 of the machine room 3.

The vertical surface portion of the L-shaped metal fitting 42 is fixed to the front surface portion 35x of the drain pan 35. By this fixing, the lower surface side of the horizontal surface portion of the metal fitting 42 and the lower surface side of the bottom surface portion 35c of the drain pan 35 are in a flush state. The overall length of the metal fitting 42 is substantially half of the dimension of the drain pan 35 in the left-right width direction (YY direction shown in FIG. 7). A fixing piece 43a at the upper edge of the standing plate 43 is screwed to the lower surface side of the horizontal surface portion of the metal fitting 42. The lower part of the standing plate 43 is fixed to the lower edge of the left side opening 3x of the machine room 3 with screws. The drain pan 35 can be taken in and out through the left side opening 3 x of the machine room 3.

The support member 44 is fixed to the horizontal surface of the metal fitting 42 by screwing. The support member 44 supports the slide of the drain pan 35 on the base member 41. The shape of the support member 44 viewed from above is substantially L-shaped, and a horizontal plane portion 44a extending in the front-rear depth direction (XX direction) of the drain pan 35; A horizontal plane portion 44b extending in the left-right width direction (YY direction) of the drain pan 35 is included. The length of the horizontal plane portion 44a in the front-rear depth direction (XX direction) is substantially half of the length of the drain pan 35 in the front-rear depth direction (XX direction). The length of the horizontal plane portion 44b in the left-right width direction (YY direction) is substantially the same as the dimension of the drain pan 35 in the left-right width direction (YY direction). The

horizontal surface portions

44a and 44b are in close contact with the bottom surface portion 35c of the drain pan 35 in a surface contact state.

The support member 44 includes an inclined surface portion 44c bent at an acute angle so as to return from the rear end of the horizontal surface portion 44b to the front edge side of the horizontal surface portion 44b, and a tip piece 44d formed at the front edge of the inclined surface portion 44c. . Hereinafter, the angle θb between the inclined surface portion 44c and the horizontal surface portion 44b is referred to as an inclination angle θb of the inclined surface portion 44c. The tip piece 44d is bent in a substantially horizontal state from the front end of the inclined surface portion 44c.

The base member 41 slidably supports the drain pan 35 along a path that bypasses the high-temperature refrigerant pipe P and the holding

members

45 and 46, and includes vertical surface portions (first and second vertical surface portions) 41a and 41b, and a horizontal surface portion 41c. , An inclined surface portion 41d, a stepped portion 41e, a back surface portion 41f, a regulating piece 41g, and side surface portions (first and second side surface portions) 41h and 41i.

The

vertical surface portions

41a and 41b are erected on the bottom surface 50 of the machine room 3 so as to face each other. The horizontal surface portion 41c is disposed at a predetermined height position between the

vertical surface portions

41a and 41b, and slidably receives the bottom surface portion 35c of the drain pan 35 and the support member 44. The inclined surface portion 41d rises obliquely upward from the rear end of the horizontal surface portion 41c, and slidably receives the insertion tip portion of the drain pan 35. The stepped portion 41e extends in a substantially horizontal state in the insertion direction of the drain pan 35 from the upper edge of the inclined surface portion 41d, and the insertion tip portion of the drain pan 35 is placed thereon. The back surface portion 41f rises upward from the rear end of the stepped portion 41e and receives contact with the insertion tip portion of the drain pan 35. The restricting piece 41g is bent in the direction opposite to the insertion direction of the drain pan 35 from the upper edge of the back surface portion 41f, and restricts the upward movement of the insertion tip of the drain pan 35. The

side surface portions

41h and 41i extend in a strip shape from both sides of the back surface portion 41f in a direction opposite to the direction in which the drain pan 35 is inserted and are connected to the upper portions of the

vertical surface portions

41a and 41b. regulate.

The vertical surface portion 41a has a fixing piece bent at the front side of the machine room 3 at the lower edge and a fixing piece bent at the back side of the machine room 3 at the upper edge. The vertical surface portion 41 b has a fixing piece bent at the back side of the machine room 3 at the lower edge, and has a fixing piece bent at the front side of the machine room 3 at the upper edge. The fixing pieces below the

vertical surface portions

41 a and 41 b are screwed and fixed to the bottom surface 50 of the machine room 3.

The horizontal surface portion 41c has fixing pieces that are bent upward on both side edges. These fixing pieces are screwed and fixed at a substantially intermediate position in the height direction of the

vertical surface portions

41a and 41b. By this fixing, the

vertical surface portions

41a and 41b and the horizontal surface portion 41c are firmly connected.

The inclined surface portion 41d is inclined at an angle θa with respect to the bottom surface portion 35c of the drain pan 35 to be inserted. Hereinafter, the angle θa is referred to as an inclination angle θa of the inclined surface portion 41d. This inclination angle θa is the same as the inclination angle θb of the inclined surface portion 44 c of the support member 44.

The front end portions of the

side surface portions

41h and 41i are screwed and fixed to the

vertical surface portions

41a and 41b. By this fixing, the inclined surface portion 41d, the stepped portion 41e, and the back surface portion 41f are firmly connected to the

vertical surface portions

41a and 41b.

The base member 41 supports the drain pan 35 at three points. That is, the insertion tip portion (back surface portion 35y) of the drain pan 35 is placed on the stepped portion 41e. The tip piece 44d of the support member 44 on the lower surface side of the drain pan 35 is placed on the horizontal surface portion 41c. The front surface portion 35 x of the drain pan 35 is fixed to the lower edge of the left side opening portion 3 x of the machine chamber 3 by the metal fitting 42 and the standing plate 43.

The base member 41 supports plate-like holding members (first and second holding members) 45 and 46. The holding

members

45 and 46 hold the high-temperature refrigerant pipe P in a state in which the high-temperature refrigerant pipe P is inserted into the drain pan 35 through the upper opening of the drain pan 35. Mounted on. A high-temperature refrigerant pipe P is disposed between the holding

members

45 and 46. The high-temperature refrigerant pipe P is a part of the refrigerant pipe that guides the high-temperature and high-pressure gas refrigerant discharged from the compressor 15 to the condenser 16, and is formed in a meandering shape by being bent a plurality of times.

Among the holding

members

45 and 46, the lower holding member 46 is inclined from the rear end of the horizontal surface portion 46c on which the high-temperature refrigerant pipe P is placed, the

vertical surface portions

46a and 46b rising upward from both sides of the horizontal surface portion 46c, and the horizontal surface portion 46c. An inclined surface portion 46d that rises upward is included. The vertical surface portion 46 a has a fixing piece that is bent toward the vertical surface portion 41 a of the base member 41 at the upper edge. The vertical surface portion 46 b has a fixing piece that is bent toward the vertical surface portion 41 b of the base member 41 at the upper edge.

The holding member 45 includes a horizontal surface portion 45c that holds the high-temperature refrigerant pipe P, and

vertical surface portions

45a and 45b that rise upward from both sides of the horizontal surface portion 45c. The vertical surface portion 45a has a fixing piece that is bent toward the vertical surface portion 41a of the base member 41 at the upper edge. The vertical surface portion 45b has a fixing piece bent on the vertical surface portion 41b side of the base member 41 at the upper edge.

The fixing pieces of the

vertical surface portions

45a and 45b of the holding member 45 are screwed and fixed to the fixing pieces on the upper edges of the

vertical surface portions

41a and 41b in a state where the fixing pieces of the

vertical surface portions

46a and 46b of the holding member 46 overlap. Is done. With this fixing, the holding

members

45 and 46 are supported by the base member 41 and the high-temperature refrigerant pipe P is held between the holding

members

45 and 46.

Although the meandering high-temperature refrigerant pipe P has a large shape, since the high-temperature refrigerant pipe P is sandwiched between the surface of the holding member 45 and the surface of the holding member 46 in a direction orthogonal to the meandering direction, Even with a large shape, the high-temperature refrigerant pipe P can be reliably and firmly held. For example, even if transportation vibration when shipping the main body 1 from the manufacturing factory is applied to the main body 1, the high-temperature refrigerant pipe P is firmly held by the holding

members

45 and 46 and does not move.

In a state where the holding

members

45 and 46 are attached to the base member 41, the holding

members

45 and 46 enter the drain pan 35 through the upper surface opening of the drain pan 35 together with the high-temperature refrigerant pipe P. Specifically, the horizontal surface portion 46c of the lower holding member 46 is in contact with the bottom surface portion 35c of the drain pan 35 or is slightly higher than the bottom surface portion 35c. Therefore, if any drain water accumulates in the drain pan 35 even a little, the drain water comes into contact with the horizontal surface portion 46 c of the holding member 46. Since the high-temperature refrigerant pipe P is mounted on the horizontal plane part 46c, the heat of the high-temperature refrigerant pipe P is transmitted to the drain water directly or via the horizontal plane part 46c. Thereby, the drain water in the drain pan 35 is heated. The heated drain water gradually evaporates. In addition, the heat of the high temperature refrigerant | coolant piping P can be efficiently transmitted to drain water by forming the holding

members

45 and 46 with a member with favorable heat conductivity.

The base member 41 and the support member 44 slide the drain pan 35 obliquely downward in accordance with the operation of pulling out the drain pan 35, and this slide causes the high-temperature refrigerant pipe P and the holding

members

45 and 46 to pass through the upper surface opening of the drain pan 35. Then, the drain pan 35 is slid in a substantially horizontal direction, and this slide guides the drain pan 35 to the side opening 3x side of the machine chamber 3 through the lower side of the high-temperature refrigerant pipe P and the holding

members

45 and 46.

In addition, the base member 41 and the support member 44 slide the drain pan 35 in a substantially horizontal direction in accordance with the insertion operation of the drain pan 35, and this slide allows the drain pan 35 to pass through the lower side of the high-temperature refrigerant pipe P and the holding

members

45 and 46. Next, the drain pan 35 is slid obliquely upward, and the high-temperature refrigerant pipe P and the holding

members

45 and 46 are moved into the drain pan 35 through the upper surface opening of the drain pan 35. Get in.

On the other hand, the evaporating member G is detachably mounted in a standing state on the bottom surface portion 35c of the drain pan 35 and in the region between the overflow pipe 35p and the high-temperature refrigerant pipe P.

The evaporating member G has a good water absorbability and an excellent transpiration property of the absorbed water. For example, the evaporating member G is formed by stacking a plurality of rectangular nonwoven fabrics. The drain water in the drain pan 35 is heated by the high-temperature refrigerant pipe P, rises in temperature, gradually evaporates as it is, and part of the drain water is sucked up by the evaporation member G. Since the sucked-up drain water is heated by the high-temperature refrigerant pipe P and has risen in temperature, it evaporates efficiently and quickly from the evaporation member G.

The dimension in the vertical height direction of the evaporating member G is much larger than the vertical dimension of the front surface portion 35x of the drain pan 35. Therefore, only the lower end portion of the evaporation member G enters the drain pan 35, and most of the evaporation member G protrudes upward from the upper surface opening of the drain pan 35. There is no configuration for supporting this protruding portion, and the evaporation member G is self-supporting on the bottom surface portion 35 c of the drain pan 35.

[Drain water generation]
The high-temperature and high-pressure gas refrigerant discharged from the compressor 15 flows to the condenser 16 through the high-temperature refrigerant pipe P. The gas refrigerant that has flowed to the condenser 16 is condensed by exchanging heat with the outside air sucked by the operation of the fan 18. The liquid refrigerant flowing out of the condenser 16 flows to the evaporator 23 through the expansion valve 17. The liquid refrigerant that has flowed to the evaporator 23 is evaporated by exchanging heat with the air sent from the fan 22. The gas refrigerant flowing out from the evaporator 23 is sucked into the compressor 15.

The air sent from the fan 22 to the evaporator 23 contains moisture, and the moisture adheres to the surface of the evaporator 23 as water droplets. The adhering water droplets gradually increase and eventually drain water flows down from the evaporator 23. Moreover, a part of water droplet adhering to the surface of the evaporator 23 freezes and becomes frost. In order to remove this frost, the operation of the refrigeration cycle (operation of the compressor 15) is stopped periodically or as necessary. The frost melted by this operation stop becomes drain water and flows down from the evaporator 23 as shown by an arrow in FIG.

Drain water flowing down from the evaporator 23 accumulates in the lower part of the duct 12. As shown by an arrow in FIG. 5, the accumulated drain water passes through the drain hole 32 of the air guide plate 31, further travels through the partition wall 14, and flows into the drain part 33. The drain water that has flowed into the drainage unit 33 passes through the drainage pipe 33 a and falls into the spare drain container 34 and accumulates in the spare drain container 34.

The temperature of the drain water is quite low immediately after leaving the evaporator 23, but rises to some extent while accumulating in the lower part of the duct 12, and further rises to some extent while flowing from the drain hole 32 to the drain part 33. To do. And the temperature of the drain water which accumulates in the preliminary | backup drain container 34 rises to the atmospheric temperature (room temperature) of the store in which the main body 1 is installed.

When the drain water in the preliminary drain container 34 is almost full, the drain water in the preliminary drain container 34 flows into the drain pan 35 through the drain water guide 34a. The drain water accumulated in the drain pan 35 rises in temperature upon receiving heat from the high-temperature refrigerant pipe P and gradually evaporates, and part of the drain water is sucked up by the evaporation member G and evaporated.

In particular, the temperature of the drain water accumulated in the drain pan 35 has already risen to the store ambient temperature at the time of moving from the preliminary drain container 34 to the drain pan 35. It rises quickly and efficiently to a possible state.

When the amount of drain water transferred from the preliminary drain container 34 to the drain pan 35 exceeds the amount of drain water evaporated from the drain pan 35 and the amount of drain water evaporated from the evaporation member G, the level of the drain water in the drain pan 35 increases. To do. When the drain water level in the drain pan 35 reaches the upper edge of the overflow pipe 35p, the drain water in the drain pan 35 flows down to the maintenance tray 36 through the overflow pipe 35p.

[Drain water full notification]
When the water level of the drain water in the maintenance tray 36 reaches a predetermined height position, this is detected by the drain water sensor 36a. Based on this detection, the light emitting diodes in the notification unit 9 arranged on the top surface of the top plate 2 emit light continuously or intermittently. This light passes through the cover of the notification unit 9 and spreads around. As a result, the user is notified that the drain water in the maintenance tray 36 is almost full.

The user who has recognized the notification removes the front cover plate 28 of the machine room 3 and pulls the maintenance tray 36 out of the main body 1 through the front opening 3 a of the machine room 3. Since the maintenance tray 36 is only placed on the bottom surface 50 of the machine room 3, the maintenance tray 36 can be easily pulled out. Then, the user discharges the drain water in the maintenance tray 36.

After drain water is discharged, the user returns the maintenance tray 36 to the original position in the machine room 3 and attaches the front cover plate 28.

[maintenance]
A service person in charge of maintenance of the main body 1 visits the store where the main body 1 is installed when the predetermined maintenance time comes or when a maintenance request is received from the user. The plate 28 is removed, and the maintenance tray 36 is pulled out of the main body 1 through the front opening 3 a of the machine room 3. The service person then drains the drain water in the maintenance tray 36 and cleans the inside of the maintenance tray 36.

Furthermore, the service person releases the screwing between the fixing portion 34 b of the preliminary drain container 34 and the support plate 37, and pulls the preliminary drain container 34 out of the main body 1 through the front opening 3 a of the machine room 3. Since the hook portion 34c of the preliminary drain container 34 is only placed on the locking piece of the suspension plate 38, the preliminary drain container 34 can be easily pulled out. The service person then drains the drain water in the preliminary drain container 34 and cleans the inside of the preliminary drain container 34.

In addition, the service person removes the side cover plate 29x of the machine room 3. By this removal, the inside of the machine room 3 is exposed through the left side opening 3x as shown in FIG. In FIG. 8, the illustration of the evaporation member G is omitted.

Subsequently, the service person releases the screwing between the metal fitting 42 and the standing plate 43 and releases the screwing between the standing plate 43 and the left side opening 3x. At this point, the support state of the drain pan 35 on the base member 41 changes from the three-point support so far to the two-point support. In the two-point support, the insertion tip portion (back surface portion 35y) of the drain pan 35 is placed on the stepped portion 41e of the base member 41, and the tip piece 44d of the support member 44 on the lower surface side of the drain pan 35 is the horizontal surface portion of the base member 41. 41c. Even with this two-point support, the drain pan 35 maintains a substantially horizontal state. Therefore, even if the drain water in the drain pan 35 is almost full, there is no problem that the drain water flows out of the drain pan 35.

The service person has the front surface 35x side of the drain pan 35, and pulls the drain pan 35 out of the main body 1 through the left side opening 3x of the machine room 3 as shown in FIGS.

In this pulling operation, first, the tip piece 44d of the support member 44 comes out of the front end of the horizontal surface portion 41c of the base member 41, and the bottom surface portion 35c of the drain pan 35 moves from the stepped portion 41e of the base member 41 to the inclined surface portion 41d. Subsequently, the inclined surface portion 44c of the support member 44 slides obliquely downward while contacting the front end of the horizontal surface portion 41c of the base member 41, and the boundary portion (corner portion) between the bottom surface portion 35c and the back surface portion 35y of the drain pan 35 is inclined. It slides obliquely downward while contacting the surface 41d. That is, the entire drain pan 35 slides downward in an oblique manner. In this case, since the inclination angle θb of the inclined surface portion 44c of the support member 44 and the inclination angle θa of the inclined surface portion 41d of the base member 41 are the same, the drain pan 35 slides and descends obliquely downward while maintaining a substantially horizontal state. The holding

members

45 and 46 and the high-temperature refrigerant pipe P do not move while being supported by the base member 41.

When the drain pan 35 continues to be pulled out, the inclined surface portion 44c of the support member 44 comes out of the horizontal surface portion 41c of the base member 41, and the bottom surface portion 35c of the drain pan 35 comes to rest on the horizontal surface portion 41c of the base member 41. Then, the bottom surface portion 35 c of the drain pan 35 slides on the horizontal surface portion 41 c of the base member 41. The holding

members

45 and 46 and the high-temperature refrigerant pipe P are detached from the drain pan 35 through the upper surface opening of the drain pan 35.

The service person lifts and removes the evaporation member G placed on the drain pan 35 upward.

When the operation of pulling out the drain pan 35 further continues, the bottom surface portion 35c of the drain pan 35 slides on the horizontal surface portion 41c of the base member 41, and the drain pan 35 passes below the holding

members

45 and 46 and the high-temperature refrigerant pipe P. As a result, as shown in FIG. 11, the drain pan 35 can be pulled out of the main body 1 through the left side opening 3 x of the machine room 3. In this case, by holding the drain pan 35 with both hands so that the drain pan 35 does not tilt, the drain water in the drain pan 35 does not overflow.

The service man carries the drain pan 35 drawn out to a drain water disposal site, discards the drain water in the drain pan 35, and cleans the inside of the drain pan 35. Furthermore, the service person also cleans the evaporated member G that has been taken out. The removed evaporation member G may be replaced with a new evaporation member G.

After a series of maintenance including cleaning, the service person puts the drain pan 35 on the horizontal surface 41c of the base member 41 in the machine room 3 and inserts it.

In the initial stage of this insertion operation, the bottom surface portion 35c of the drain pan 35 slides on the horizontal surface portion 41c of the base member 41, and the drain pan 35 passes below the holding

members

45 and 46 and the high-temperature refrigerant pipe P. Subsequently, as shown in FIG. 9, the inclined surface portion 44 c of the support member 44 slides obliquely upward while contacting the front end of the horizontal surface portion 41 c of the base member 41, and the boundary between the bottom surface portion 35 c and the back surface portion 35 y of the drain pan 35. The portion (corner portion) slides obliquely upward while contacting the inclined surface portion 41d. That is, the whole drain pan 35 slides up obliquely upward.

When the insertion operation of the drain pan 35 continues, the tip piece 44d of the support member 44 will eventually be placed on the front end side of the horizontal surface portion 41c of the base member 41, and the bottom surface portion 35c of the drain pan 35 will be placed on the stepped portion 41e of the base member 41. It becomes a state. Then, the back surface portion 35 y of the drain pan 35 contacts the back surface portion 41 f of the base member 41. By this contact, the insertion of the drain pan 35 is completed. The holding

members

45 and 46 and the high-temperature refrigerant pipe P enter the drain pan 35 through the upper surface opening of the drain pan 35.

After the insertion of the drain pan 35 is completed, the service person places a cleaned or new evaporation member G in the drain pan 35. Thereafter, the service person attaches the metal fitting 42 and the standing plate 43, and further attaches the side cover plate 29x. Subsequently, the service person inserts the preliminary drain container 34 from the front opening 3 a of the machine room 3 and attaches the fixing portion 34 b and the support plate 37. Further, the service person inserts the maintenance tray 36 from the front opening 3 a of the machine room 3 and attaches the front cover plate 28. This completes the maintenance.

As described above, the drain pan 35 is lowered according to the pulling operation of the drain pan 35, and the high temperature refrigerant pipe P and the holding

members

45, 46 are separated from the drain pan 35 by this lowering, and the drain pan 35 is inserted according to the operation of inserting the drain pan 35. 35 is raised, and this rise causes the high temperature refrigerant pipe P and the holding

members

45, 46 to enter the drain pan 35. Therefore, the drain pan 35 contacts or collides with the high temperature refrigerant pipe P and the holding

members

45, 46. The drain pan 35 can be easily and smoothly inserted and removed.

Since the drain pan 35 can be removed and inserted in a simple operation by pulling out the drain pan 35 in one direction and inserting it in the reverse direction, not only a service person accustomed to the work but also a general user unfamiliar with the work can use the drain pan 35. It can be easily and smoothly taken in and out. Therefore, the drain pan 35 can be easily cleaned at any time. As a result, generation | occurrence | production of the mold | fungi and bacteria in the drain pan 35 can be prevented, and a strange odor can also be prevented.

Since the sliding drain pan 35 is supported in a substantially horizontal state by the inclined surface portion 41 d of the base member 41 and the inclined surface portion 44 c of the support member 44, it is possible to prevent a problem that drain water in the drain pan 35 overflows into the machine chamber 3. .

In the above embodiment, the three-sided open type open showcase has been described as an example. However, the present invention is not limited to this, and the present invention can be similarly applied to a general one-sided open type showcase that opens only on the front side. .

In the above embodiment, the high-pressure side refrigerant pipe through which the refrigerant discharged from the compressor 15 directly flows is used as the high-temperature refrigerant pipe P as the heating unit that heats the drain water in the drain pan 35. However, a high-temperature refrigerant flows. If it is refrigerant piping, you may use the refrigerant piping of another site | part as the high temperature refrigerant | coolant piping P. FIG. Moreover, as a heating part, you may use not only refrigerant | coolant piping but an electric heater, for example.

In the said embodiment, although it was set as the structure which alert | reports by the light emission of the alerting | reporting unit 9 arrange | positioned on the top plate 2 of the main body 1 that the drain water in the maintenance tray 36 is near a full state, Not only the light emitting diode but also a buzzer that emits an electronic sound may be used. You may use both a light emitting diode and a buzzer as an alerting | reporting means. In addition to using a light emitting diode or buzzer as a notification means, a notification signal indicating that the drain water in the maintenance tray 36 is almost full is sent from the notification unit 9 to the management room of the store, etc. It is also possible to send via a communication network.

Other than that, the above-described embodiments and modifications are presented as examples, and are not intended to limit the scope of the embodiments and modifications. The novel embodiments and modifications can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

The open showcase of the embodiment of the present invention can be used in a small convenience store or a relatively small supermarket.

Claims

A display room for goods,
A refrigeration cycle configured by connecting a compressor, a condenser, a decompressor, and an evaporator, and a cooling unit that cools the air in the display chamber;
A drain pan that receives drain water flowing down from the evaporator;
A heating unit that is contained in the drain pan and heats the drain water in the drain pan;
A support mechanism for supporting the drain pan so as to be freely inserted and removed without interfering with the heating unit;
An open showcase characterized by comprising.
A preliminary drain container that receives drain water flowing down from the evaporator and guides a drain water of a predetermined amount or more of the received drain water to the drain pan;
The open showcase according to claim 1, further comprising:
The drain pan is open at an upper surface and receives the drain water flowing down from the evaporator through the opening.
The support mechanism is slidably supported by a holding member that holds the heating unit in a state of entering the drain pan through the opening of the drain pan, and a path that bypasses the drain pan with respect to the heating unit and the holding member. A base member that is attached to the drain pan and supports a slide of the drain pan on the base member.
The open showcase according to claim 1, wherein:
A machine room containing the drain pan and having an opening for taking in and out the drain pan;
Further comprising
The base member and the support member are
In response to the operation of pulling out the drain pan, the drain pan is slid obliquely downward, and by this slide, the heating unit and the holding member are separated from the drain pan through the opening of the drain pan, and then the drain pan is moved in a substantially horizontal direction. The drain pan is guided to the opening side of the machine room through the heating unit and the lower side of the holding member by this sliding.
In response to the operation of inserting the drain pan, the drain pan is slid in a substantially horizontal direction, and this slide guides the drain pan to the opposite side of the opening of the machine room through the lower side of the heating unit and the holding member. The drain pan is slid obliquely upward, and the slide causes the heating unit and the holding member to enter the drain pan through the opening of the drain pan.
The open showcase according to claim 3.
The base member is
First and second vertical surface portions erected in a state of facing each other on the bottom surface of the machine room;
A horizontal surface portion disposed between the first and second vertical surface portions and slidably receiving a bottom surface of the drain pan;
An inclined surface portion that rises obliquely upward from the horizontal portion and slidably receives an insertion tip portion of the drain pan,
A stepped portion that extends in a horizontal state in the drain pan insertion direction from the upper edge of the inclined surface portion, and on which the insertion tip of the drain pan rests,
A rear portion that rises upward from the stepped portion and contacts the insertion tip of the drain pan; and
1st and 2nd which extend in the direction opposite to the insertion direction of the drain pan from both sides of the back surface portion and are connected to the first and second vertical surface portions and restrict the movement in the direction orthogonal to the insertion direction of the drain pan. Side part,
Including
The support member is
A plane part attached to the bottom part of the drain pan;
An inclined surface portion that is bent in a direction opposite to the direction in which the drain pan is inserted from the flat surface portion and slidably contacts the horizontal surface portion of the base member;
Including
The inclination angle of the inclined surface portion of the base member is the same as the inclination angle of the inclined surface portion of the support member.
The open showcase according to claim 4, wherein:
The heating unit is a high-temperature refrigerant pipe, and is a part of the refrigerant pipe that guides the high-temperature gas refrigerant discharged from the compressor to the condenser.
The holding members are plate-like first and second holding members that hold the high-temperature refrigerant pipe in a sandwiched state.
The open showcase according to any one of claims 3 to 5, wherein
An evaporation member that is detachably mounted in the drain pan and sucks up and drains the drain water in the drain pan.
Further comprising
The open showcase according to claim 1, wherein:
The cooling part is
The refrigeration cycle;
A fan that sucks air in the display chamber and sends it to the evaporator;
A duct that houses the evaporator and guides the cool air that has passed through the evaporator to the display chamber;
including,
The open showcase according to claim 1, wherein:
A drainage section for discharging drain water that flows down from the evaporator and accumulates in the duct;
A preliminary drain container that once receives drain water discharged from the drainage section and guides it to the drain pan;
including,
The open showcase according to claim 1, wherein:
Among the drain water in the drain pan, an overflow pipe for discharging a predetermined amount or more of drain water to the outside of the drain pan,
A maintenance tray for receiving drain water discharged from the overflow pipe;
The open showcase according to claim 1, further comprising:
A drain water sensor that detects when the drain water level in the maintenance tray reaches a predetermined position;
A notification unit for notifying that the drain water in the maintenance tray is almost full in response to detection by the drain water sensor;
The open showcase according to claim 10, further comprising: