JP6501149B2 - Refrigeration system - Google Patents

Description

  The present invention relates to a freezer / refrigerant showcase such as a refrigerator or the like equipped with an evaporation dish into which drain water from a storage room or a cooler flows.

  Conventionally, as a showcase of this type, it is known that a cooler and a cooling blower are provided in an air passage leading to a product storage section, and a compressor, a condenser and a blower for cooling the condenser are provided in a machine room. There is. Such a showcase requires treatment of drain water discharged from the cooler during cooling. Therefore, an upper evaporation dish provided in the machine room with a discharge port for discharging drain water exceeding a predetermined water level, a heating means for heating drain water in the upper evaporation dish, and drain water discharged from the upper evaporation dish A showcase has been proposed that includes a lower evaporating dish having an outlet for receiving water and discharging drain water, and a plurality of evaporation promoting plates for absorbing and evaporating drain water in the lower evaporating dish (eg, patent Reference 1).

JP, 2001-208462, A

However, in the conventional showcase, since the evaporation pan is disposed at one end in the width direction of the machine room, the air flow warmed by the exhaust heat from the condenser flowing in the machine room can not be effectively used. There has been a problem that the drain water absorbed by the promoting member can not be efficiently evaporated by contact with air.
The present invention has been made in view of the above-described circumstances, and provides a refrigeration apparatus capable of efficiently evaporating drain water absorbed by the evaporation promoting member by effectively utilizing the exhaust heat from the condenser. The purpose is to

In order to achieve the above object, the present invention comprises a storage room, a cooler for cooling the storage room, and a machine room provided at a lower part of the storage room, the machine room including the cooler A refrigeration apparatus comprising: a condenser and a compressor connected by a refrigerant pipe; a blower for sucking in air from the outside of the machine chamber; and a drain water evaporator for evaporating drain water generated by the cooler. The drain water evaporator receives a drain water, and has a first evaporation dish having a discharge port for discharging drain water exceeding a predetermined water level to a second evaporation dish disposed downward, and the first evaporation dish And a second evaporation promoting member for absorbing and evaporating the drain water accumulated in the second evaporation dish, and the air flow direction in the machine chamber The width of the second evaporation promoting member is A portion of a refrigerant pipe which is formed substantially equal to the width of the compressor, the drain water evaporation device is disposed downstream of the condenser when viewed from the air flow direction in the machine chamber, and connects the compressor and the condenser Are disposed in the vicinity of the bottom surface of the first evaporation plate , and the first evaporation promoting member includes a high evaporation plate and an evaporation plate lower in height than the high evaporation plate. A part of the rising portion of the refrigerant pipe, and an introduction pipe for introducing drain water discharged from the cooler into the first evaporation plate, disposed at one end of the first evaporation plate; The evaporation plate with the low height is disposed below the introduction pipe .

Further, the present invention is characterized in that the width of the first evaporation promoting member as viewed in the air flow direction in the machine chamber is formed smaller than the width of the condenser.
Further, according to the present invention, the refrigerant pipe from the compressor to the condenser is disposed so as to meander in the first evaporation pan, and the left side or the right side of the first evaporation pan in a top view An area where the pipe is not disposed in the vicinity of the bottom surface of the first evaporating dish is provided on one of the sides.
Further, the present invention is characterized in that the first evaporation promoting member is disposed on the upper side of a pipe disposed in the vicinity of the bottom of the first evaporation dish in a top view.

Further, the present invention is characterized in that the first and second evaporation promoting members are formed to be laterally long with respect to the air circulation direction in the machine chamber.
Further, the present invention is characterized in that the condenser, the drain water evaporation device, and the compressor are arranged in this order from the windward of the air circulation direction in the machine chamber, and the blower is an axial fan.
Further, the present invention is characterized in that the pipe disposed in the first evaporation dish is formed of steel.

  According to the present invention, drain water absorbed by the evaporation promoting member can be efficiently evaporated.

It is an appearance perspective view of a showcase concerning an embodiment of the present invention. It is a side sectional view of a showcase. It is a figure showing a machine room inside of a showcase, (A) is a top view of a machine room, (B) is a perspective view of a machine room. It is a side sectional view of a machine room. It is a figure which shows a drain water evaporation apparatus, (A) is a side view of a drain water evaporation apparatus, (B) is a perspective view of a drain water evaporation apparatus. It is a perspective view of an evaporation promoting member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a showcase 1 according to an embodiment of the present invention. FIG. 2 is a side sectional view of the showcase 1. Note that the arrow F direction is the front of the showcase 1 and the arrow R direction is the rear of the showcase 1.
The showcase 1 has a main body 4 opened at the front by attaching side plates (not shown) to both sides of the heat insulating wall 2 having a substantially U-shaped cross section. A duct plate 6 is attached to the inside of the heat insulating wall 2 at intervals with a space between the bottom surface, the back surface and the top surface, and a duct 7 is formed between the duct plate 6 and the heat insulating wall 2 The storage chamber 8 whose front face is opened is constructed. A machine room 21 is provided below the heat insulating wall 2.

The upper end of the duct 7 communicates with the cold air discharge port 14 located at the front opening upper edge of the storage chamber 8 and the lower end of the duct 7 communicates with the cold air suction port 16 located at the front opening lower edge of the storage chamber 8 There is. Further, a cooler 18 constituting a refrigeration cycle of the cooling device is vertically disposed at a lower central portion of the duct 7, and a blower 17 for cold air supply is disposed at a lower portion of the duct 7.
The cold air suction port 16 is configured on the upper surface of the cold air suction member 116. In the cold air suction member 116, a night cover (not shown) for closing the opening of the storage room 8 at the time of closing the store is retractably accommodated.
In the storage room 8, a first display shelf 31, a second display shelf 32, a third display shelf 33, and a fourth display shelf 34, which can be pulled out and moved in the front-rear direction, are arranged in four stages It consists of
Each of the first to fourth display shelves is configured to be inclined slightly lower to the front when accommodated in the storage room 8.
A back plate 27 made of steel plate is attached to the back of the heat insulating wall 2 at a predetermined distance from the back of the heat insulating wall 2, and an exhaust duct 28 is provided between the back plate 27 and the heat insulating wall 2. It is configured. The lower end of the exhaust duct 28 opens and communicates with the rear of the machine chamber 21, and the upper end of the exhaust duct 28 opens above the showcase 1.
A panel 29 is disposed on the front of the machine room 21 so as to freely open and close the front of the machine room 21.

Next, with reference to FIG. 3 and FIG. 4, the machine room 21 configured below the heat insulating wall 2 will be described.
FIG. 3 is a view showing the inside of the machine room 21 of the showcase 1, (A) is a top view of the machine room 21, and (B) is a perspective view of the machine room 21. 4 is a side sectional view of the machine room 21. As shown in FIG.
A compressor 22, a condenser 23, and a condenser blower 24 that constitute a refrigeration cycle of a cooling device together with a cooler 18 are installed in the machine room 21 and a drain water evaporation device 50 according to the present embodiment, a power supply And the unillustrated electrical equipment box which accommodated the control board is arrange | positioned. The condenser blowers 24 are disposed between the condenser 23 and the compressor 22, and three condenser blowers 24 are disposed at equal intervals all over the width direction of the condenser 23. The condenser blower 24 is an axial fan, and the air sent from the condenser blower 24 is laminar.
The respective devices in the machine room 21 are arranged in order from the front of the showcase 1 (in the direction of the arrow F), the condenser 23, the condenser blower 24, the drain water evaporation device 50, and the compressor 22 There is. The condenser 23, the drain water evaporation device 50, and the compressor 22 are disposed side by side substantially in parallel, and in the direction of the air drawn into the machine room 21 described later (the direction of the arrow A in FIG. 4). It is arranged to be horizontally long.
The width W1 of the condenser 23 and the width W2 of the drain water evaporation device 50 are substantially equal. Further, the height H1 of the condenser 23 and the height H2 of the drain water evaporation device 50 are substantially equal.
The distance δ between the condenser 23 and the drain water evaporator 50 is about half of the thickness T1 of the condenser, and the condenser 23 and the drain water evaporator 50 are disposed close to each other.
As described above, in the interval δ between the condenser 23 and the drain water evaporation device 50, three units of condensation are equally spaced in the width direction of the condenser 23 at the right end portion, the center portion and the left end portion of the condenser 23 A mechanical blower 24 is provided.
By using the condenser fan 24 as the axial flow fan, the flow direction of the axial flow fan itself is directed from the condenser 23 to the drain water evaporation device 50 so that the condenser 23 can be easily formed without installing a duct. High temperature air can be applied to the drain water evaporator 50.
Further, by using the condenser blower 24 as an axial fan, the blower can be miniaturized, and the restriction of the distance δ between the condenser 23 and the drain water evaporation device 50 can be alleviated.
Further, by arranging the condenser blower 24 including a plurality of axial flow fans in the width direction of the condenser 23, an air flow toward the drain water evaporation device 50 is formed without stagnation in the width direction of the condenser 23. Can.

If the compressor 22 is disposed between the condenser 23 and the drain water evaporator 50, the air from the condenser 23 hits the compressor 22 and becomes turbulent, and this turbulent air enters the drain water evaporator 50. Do.
On the other hand, in the present embodiment, since the condenser 23, the drain water evaporation device 50, and the compressor 22 are laid out in this order, each of the three condenser fans 24 is located in front of the showcase 1 (arrow F direction ), And the air, together with the exhaust heat of the condenser 23, forms a laminar flow and strikes the drain water evaporation device 50 adjacent to the condenser 23.
This air is a laminar flow and directly contacts the right end, center and left end of the drain water evaporator 50 in close proximity to the condenser blower 24. Air can be applied evenly with the heat.
Since this air is directly applied in a laminar flow directly from the condenser 23 adjacent to the drain water evaporator 50, the drain water sucked up by the evaporation plate 55 provided in the drain water evaporator 50 can be efficiently evaporated. .

A compressor 22 is provided downstream of the drain water evaporation device 50 as viewed in the air flow direction (direction of arrow A in FIG. 4) in the machine room 21.
The width W3 of the compressor 22 is narrower than the width W2 of the drain water evaporator 50, and the compressor 22 is disposed from the central portion of the drain water evaporator 50 to a position slightly closer to the left end. Therefore, the air that has passed through the wide drain water evaporator 50 is concentrated on the narrow compressor 22 and the compressor 22 is effectively cooled.

  From the above, when the condenser 23, the blower for condenser 24, the drain water evaporation device 50, and the compressor 22 are arranged in order from the front of the showcase 1 (the arrow F direction), the drain water evaporation device 50 While being able to evaporate drain water efficiently, the cooling level of the compressor 22 can also be maintained.

  As shown in FIG. 4, the air (external air) sucked in the direction of arrow A from the front of the machine room 21 by the condenser blower 24 passes through the condenser 23 and forms a laminar flow in the drain water evaporator 50. It passes through and is discharged to the exhaust duct 28 in the direction of arrow B behind the machine room 21.

Next, the drain water evaporation device 50 will be described in detail with reference to FIGS. 5 and 6 in addition to the above-described drawings. FIG. 5 is a view showing a drain water evaporator, wherein (A) is a side view of the drain water evaporator, and (B) is a perspective view of the drain water evaporator. FIG. 6 is a perspective view of the evaporation promoting member.
The drain water evaporator 50 is located below the upper evaporation dish (first evaporation dish) 51 receiving the drain water discharged from the cooler 18 and the upper evaporation dish 51, and the drain overflowing from the upper evaporation dish 51 A lower evaporation dish (second evaporation dish) 52 for receiving water, and an evaporation pipe (part of refrigerant piping) 53 provided in the upper evaporation dish 51 for exchanging heat with drain water and supercooling the refrigerant; A plurality of evaporation plates 55 (55a, 55b, 55c) for promoting the evaporation of the received drain water, and a drain water tank (not shown) are provided.
The upper evaporating dish 51 and the lower evaporating dish 52 are both substantially rectangular in top view and are formed to be approximately equal in size.

The upper evaporating dish 51 is made of a heat conductive material. Inside the upper evaporation dish 51, two evaporation pipes 53 extending substantially in parallel with the upper evaporation dish 51 along the bottom surface 51d are provided at predetermined intervals. The evaporation pipe 53 is a part of a refrigerant pipe that connects the compressor 22 and the condenser 23. The evaporation pipe 53 includes a parallel portion 53a substantially parallel to the ground and a rising portion 53b rising substantially vertically. The evaporation pipe 53 extends to the outside of the upper evaporation tray 51 through the rising portion 53b. In the evaporation pipe 53, portions provided in the upper evaporation dish 51, such as the parallel portion 53a and the rising portion 53b, are made of stainless steel piping which does not generate rust.
The upper evaporation tray 51 is for receiving drain water such as dew water and defrost water discharged from the cooler 18. Inside the upper evaporation pan 51, a plurality of evaporation plates 55 (55a, 55b) are provided to absorb drain water and facilitate diffusion from the surface thereof. The evaporation plate 55 (55a, 55b) is provided on the upper side of the evaporation pipe 53.
As an example of the material of the evaporation plate 55, a nonwoven fabric such as polyester fiber is used as a base material, phenol of fine particles is thermally cured on this base material as a fixing agent, and further hydrophilicity is imparted and the substrate is immersed in alcohol solvent. After that, the dried one can be used.

As shown in FIG. 5A, the evaporation plate (first evaporation promoting member) 55 disposed on the upper evaporation plate 51 is a high evaporation plate (large) 55a and a low evaporation plate (small) 55b. And is not disposed at the left end of the upper evaporation tray 51 in the figure.
As shown in FIG. 6, the evaporation plate (large) 55a is fixed to each other at two places of upper and lower portions by a strip-shaped fixing member 56, and the evaporation plate (small) 55b is fixed to each other by a strip-shaped fixing member 57.
An upper evaporating dish drain port 59 is provided at a lower portion slightly to the right of the central portion 51 b of the upper evaporating dish 51. The upper evaporation dish drainage port 59 has an upper end 59a opened above the upper evaporation dish 51, a lower end 59b opened just above the lower evaporation dish 52, and drain water overflowing above the upper evaporation dish 51 below. It is made to discharge to the evaporating dish 52.

The lower evaporating dish 52 is provided on the lower side of the upper evaporating dish 51 and is configured to overlap the upper evaporating dish 51. The lower evaporating dish 52 and the upper evaporating dish 51 are formed to have substantially the same size.
A plurality of lower evaporation plates 55c (second evaporation promoting members) are provided inside the lower evaporation dish 52 from the right end to the entire left end with a predetermined interval. The lower evaporation plates 55 c are fixed to each other by the fixing material 54.
A lower evaporating dish drain port 60 is provided at the lower part from the center of the lower evaporating dish 52 to the slightly left side. The lower evaporating dish drain port 60 is for draining to a drain water tank (not shown) discharged from the lower evaporating dish 52 on the assumption that drain water which can not be evaporated by the lower evaporating dish 52 temporarily exists. An upper end 60a of the lower evaporating dish drain 60 is opened above the lower evaporating dish 52, a lower end 60b is opened just above a drain water tank (not shown), and drain water overflows above the lower evaporating dish 52 Drain into a drain water tank.

In the present embodiment, the width of the lower evaporation plate 55 c (second evaporation promoting member) provided in the lower evaporation tray 52 is configured to be substantially the same as the width of the condenser 23.
As a result, the high temperature air having passed through the condenser 23 forms a laminar flow by the condenser blower 24 and contacts the entire area of the lower evaporation plate 55c, whereby the evaporation is effectively promoted.
Therefore, even when a large amount of drain water is generated, for example, in a high humidity season, most of the drain water evaporates, and recovery to a drain water tank (not shown) is hardly performed, and maintenance free of the drain water tank can be substantially realized.

In the present embodiment, the evaporation plate (first evaporation promoting member) 55 disposed on the upper evaporation plate 51 is configured of a high evaporation plate (large) 55a and a low evaporation plate (small) 55b, The evaporation plate 55 is not disposed at the left end of the upper evaporation tray 51 in FIG. 5 (A). At the left end in FIG. 5A in which the evaporation plate 55 is not disposed, adjustment spaces S1 and S2 for adjusting the evaporation amount of drain water are formed. The adjustment space S1 is a space where the evaporation plate 55 is not disposed, and the adjustment space S2 is formed above the evaporation plate (small) 55b, and the height of the high evaporation plate (large) 55a and the height of the low evaporation plate (small) 55b Is a space formed by the difference of
An evaporation pipe (a part of the refrigerant piping) 53 is disposed on the upper evaporation dish 51, and in order to perform heat exchange with drain water to supercool the refrigerant, the upper evaporation dish 51 is constantly drained by a fixed amount of drain water. Storage is required.

In the present embodiment, as shown in FIG. 5, the rising portion 53 b of the evaporation pipe 53 and the drain water discharged from the cooler 18 are introduced to the upper evaporation tray 51 at the left end side (one end side) of the upper evaporation tray 51. Introductory pipe 153 and are arranged collectively. The space for introducing the rising portion 53b of the evaporation pipe 53 is the adjustment space S1, and the adjustment space S2 for introducing the introduction pipe 153 is provided.
The inlet pipe 153 is provided with a trap-like mouth portion 153A at the tip thereof in a horizontally long manner. Since the mouth portion 153A is horizontally provided, the evaporation plate (small) 55b can be disposed without lowering the height of the evaporation plate (small) 55b so much.

The size of the adjustment space S1 can be adjusted by the position of the upper evaporation tray 51 where the evaporation pipe 53 is disposed. Further, the size of the adjustment space S2 can be adjusted depending on how the width W4 of the evaporation plate (large) 55a and the width W5 of the evaporation plate (small) 55b are distributed.
By appropriately adjusting the size of the adjustment space S1 and the size of the adjustment space S2, the storage amount of drain water of the upper evaporation dish 51 can be adjusted.
Further, by providing the rising portion 53b of the evaporation pipe 53 in the adjustment space S1, the width of the drain water evaporation device 50 may be arranged to be substantially equal to the width of the condenser 23 without increasing the width of the machine chamber 21. it can.

As described above, according to this embodiment, the following effects can be obtained.
That is, according to the present embodiment, since the evaporation pipe 53 connecting the compressor 22 and the condenser 23 is disposed in the vicinity of the bottom surface 51 d of the upper evaporation pan 51, drain water in the upper evaporation pan 51 is evaporated It can be heated at 53 and the drain water received at the upper evaporating dish 51 can be evaporated. Therefore, even when a large amount of drain water is generated in a high humidity season, drain water can be evaporated without using an electric heater.

Further, according to the present embodiment, the drain water evaporation device 50 is disposed on the downwind of the condenser 23 as viewed from the air circulation direction in the machine room 21 (the direction of arrow A in FIG. 4). W1 (see FIG. 3) and the width W2 of the drain water evaporator 50 are substantially equal, and the height H1 of the condenser 23 and the height H2 of the drain water evaporator 50 are substantially equal. It is done. The evaporation plates 55 (55a, 55b, 55c) are disposed horizontally long in the air flow direction.
Therefore, air can be applied to the evaporation plates 55 (55a, 55b, 55c) of the drain water evaporation device 50 efficiently using the heat generated by the condenser 23, and the drain water can be efficiently evaporated. Even when a large amount of drain water is generated in a humid season, drain water can be evaporated without using an electric heater.

Further, according to the present embodiment, the adjustment spaces S1 and S2 are provided in the upper evaporation dish 51. Therefore, in the upper evaporation dish 51, the evaporation of the drain water can be suppressed by the portion of the adjustment spaces S1 and S2, and the drain water received by the upper evaporation dish 51 is entirely evaporated only by the upper evaporation dish 51. There is no Since the upper evaporation dish 51 can be kept immersed in the drain water, the drain water can maintain the role of cooling the evaporation pipe 53.
On the other hand, since the evaporation plate (small) 55b and the evaporation plate (large) 55a are provided in the upper evaporation dish 51 other than the adjustment spaces S1 and S2, efficiency of drain water is increased in this area It can be evaporated well, and the necessary drain water evaporation to be performed in the upper evaporation dish 51 can be efficiently performed.

Further, according to the present embodiment, the lower evaporation plate 55c is provided in the lower evaporation plate 52 when viewed from the air flow direction in the machine room 21 (the direction of arrow A in FIG. 4) regarding the lower evaporation plate 52. The width of the portion where the pressure is applied and the width of the condenser 23 are approximately equal. In the lower evaporating dish 52, a lower evaporating plate 55c is provided throughout.
Therefore, in the lower evaporating dish 52, the drain water can be evaporated using heat generated by the condenser 23 efficiently, and drain water does not overflow from the lower evaporating dish 52. Since the drain water does not overflow from the lower evaporation tray 52, the work of replacing the drain water accumulated in the drain water tank is unnecessary.

Further, according to the present embodiment, the evaporation plate (large) 55 a and the evaporation plate (small) 55 b provided in the upper evaporation tray 51 are disposed on the upper side of the evaporation pipe 53.
Therefore, the evaporation pipe 53 can be disposed along the bottom surface 51 d of the upper evaporation dish 51, and the drain water can be heated by the evaporation pipe 53 in the entire upper evaporation dish 51.

Further, according to the present embodiment, the portion of the evaporation pipe 53 disposed in the upper evaporation dish 51 is made of stainless steel.
Therefore, the evaporation pipe 53 is not rusted.

  As mentioned above, although the present invention was explained based on this embodiment, the present invention is not limited to this embodiment. Since the present invention merely illustrates one embodiment of the present invention, arbitrary modifications and applications are possible without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Showcase 2 Heat insulation wall 7 Duct 8 Storage room 18 Cooler 21 Machine room 22 Compressor 23 Condenser 24 Condenser blower 28 Exhaust duct 50 Drain water evaporator 51 Upper evaporation dish (1st evaporation dish)
52 Lower evaporation dish (second evaporation dish)
53 Evaporative pipe 55a Evaporative plate (large)
55b evaporation plate (small)
55c Lower evaporation plate 59 Upper evaporation dish drain 60 Lower evaporation dish drain 153 Introduction pipe

Claims (7)

A storage room, a cooler for cooling the storage room, and a machine room provided at a lower part of the storage room, wherein the machine room is a condenser and a compressor connected with the cooler and a refrigerant pipe. A refrigeration apparatus comprising: a fan for sucking in air from outside the machine room; and a drain water evaporation apparatus for evaporating drain water generated by the cooler.
The drain water evaporator receives a drain water and has a first evaporation dish having a discharge port for discharging drain water exceeding a predetermined water level to a second evaporation dish disposed downward;
A first evaporation promoting member for absorbing and evaporating drain water accumulated in the first evaporation dish;
A second evaporation promoting member for absorbing and evaporating drain water accumulated in the second evaporation dish;
The width of the second evaporation promoting member is substantially equal to the width of the condenser when viewed from the air flow direction in the machine chamber,
The drain water evaporation device is disposed downstream of the condenser when viewed from the air flow direction in the machine room,
A portion of a refrigerant pipe connecting the compressor and the condenser is disposed in the vicinity of the bottom surface of the first evaporation pan ,
The first evaporation promoting member includes a high-height evaporation plate and an evaporation plate lower than the high-height evaporation plate.
A part of the rising portion of the refrigerant pipe and an introduction pipe for introducing drain water discharged from the cooler into the first evaporation plate, which are disposed on one end side of the first evaporation plate;
The evaporation plate with the low height is disposed below the introduction pipe,
A refrigeration apparatus characterized by The width of the said 1st evaporation promotion member seen from the air circulation direction in the said machine room is small formed with respect to the width | variety of the said condenser. The freezing apparatus of Claim 1 characterized by the above-mentioned. The refrigerant pipe from the compressor to the condenser is disposed so as to meander in the first evaporation dish,
In one side of the left side or the right side of the first evaporation dish in top view, an area where the refrigerant pipe is not arranged in the vicinity of the bottom surface of the first evaporation dish is provided.
The refrigeration apparatus according to claim 1 or 2, wherein The first evaporation promoting member is disposed on the upper side of a pipe disposed in the vicinity of the bottom portion of the first evaporation plate in a top view. Refrigerating apparatus as described. 5. The refrigeration system according to any one of claims 1 to 4, wherein the first and second evaporation promoting members are formed to be laterally long with respect to the air circulation direction in the machine chamber. apparatus. The condenser, the drain water evaporator, and the compressor are arranged in this order from the windward of the air flow direction in the machine room;
The refrigeration apparatus according to any one of claims 1 to 5, wherein the blower is an axial fan. The refrigeration system according to any one of claims 1 to 6, wherein the refrigerant pipe disposed in the first evaporation plate is made of steel.

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