JP7180292B2 - Drain water treatment equipment - Google Patents

Description

The present invention relates to a drain water treatment device.

2. Description of the Related Art Conventionally, as a drain water treatment device that is applied to a showcase that keeps products to be stored in a desired temperature state, one that has a drain pan is known. The drain pan is provided corresponding to an evaporator that constitutes a refrigeration circuit in which refrigerant is sealed together with the compressor, condenser, and expansion mechanism, and stores drain water generated from this evaporator. The drain water stored in the drain pan is sucked by the drain sheet erected on the drain pan by capillary action, and is evaporated by the air passing around the drain sheet (see, for example, Patent Document 1).

JP-A-7-133977

By the way, in the above drain water treatment apparatus, the amount of drain water generated in the evaporator sometimes becomes large due to factors such as the environment in which the showcase is installed. If the amount of drain water exceeds the storage limit of the drain pan, there is a risk that the drain pan will overflow.

Some showcases store the drain water overflowing from the drain pan in a predetermined area and prompt the employees of the store where the showcase is installed to dispose of the drain water. For example, the drain water treatment operation becomes complicated.

Although the drain water treatment apparatus applied to the showcase has been described here, it is needless to say that the same problem occurs in the drain water treatment apparatus other than the showcase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drain water treatment apparatus that can treat drain water satisfactorily.

In order to achieve the above object, a drain water treatment apparatus according to the present invention is provided corresponding to an evaporator that constitutes a refrigeration circuit in which a refrigerant is sealed together with a compressor, a condenser, and an expansion mechanism, and the evaporator comprises: A drain water treatment apparatus comprising an evaporation unit for evaporating generated drain water, comprising a circulation member having one end connected to the evaporation unit and the other end forming a connection end, wherein the circulation member is connected to the connection When connected through the end to another evaporator unit that is provided corresponding to an evaporator that constitutes a refrigeration circuit different from the refrigeration circuit and that evaporates drain water generated in the evaporator, the drain water is allowed to circulate, and when it is not connected to the other evaporating unit through the connection end, a part of itself is blocked to restrict the circulation of the drain water.

In the drain water treatment apparatus according to the present invention, the evaporation unit includes a drain plate for storing the drain water, and a drain sheet body provided upright on the drain plate for sucking the drain water by capillary action. , wherein the one end of the circulation member is connected to the drain pan.

Further, according to the present invention, in the above drain water treatment apparatus, the evaporation unit is provided with height adjusting means for adjusting the height level of the drain pan.

According to the present invention, when a circulating member having one end connected to an evaporating unit and the other end constituting a connecting end portion is connected to another evaporating unit through the connecting end portion, drain water can be circulated. On the other hand, if it is not connected to another evaporator unit through the connection end, it is partially blocked and restricts the flow of drain water. If so, the evaporation unit can be shared. Therefore, when the amount of drain water generated in one of the evaporation units is large, the drain water can be circulated to the other evaporation units, and the drain water can be evaporated. Therefore, according to the drain water treatment apparatus, it is possible to effectively treat the drain water.

FIG. 1 is a cross-sectional side view schematically showing the internal structure of a showcase to which a drain water treatment apparatus according to an embodiment of the invention is applied. 2 is a schematic diagram showing a flow member connected to the drain pan shown in FIG. 1. FIG. FIG. 3 is a schematic diagram showing how the evaporation units shown in FIGS. 1 and 2 are connected. FIG. 4 is a schematic diagram showing a modification of the drain water treatment apparatus shown in FIGS. 1 to 3. FIG.

Preferred embodiments of a drain water treatment apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional side view schematically showing the internal structure of a showcase to which a drain water treatment apparatus according to an embodiment of the invention is applied. The showcase illustrated here includes a case body 10 .

The case main body 10 is a heat insulating housing having an opening (hereinafter also referred to as a front opening) 10a on the front surface. The case main body 10 has a storage chamber 11 defined therein, and is provided with an air circulation means 20 and a drain water treatment device 30 .

The storage room 11 is a room defined in a manner facing the front opening 10a, and has a plurality (five in the illustrated example) of product placement shelves 12 arranged in a vertical direction. The product placement shelf 12 is for placing each product.

A deck pan 13 is provided at the bottom of the storage room 11 . The deck pan 13 is for placing products in the same manner as the product placing shelf 12 described above.

A suction port 14 is formed in the front lower portion of the storage chamber 11, and an air outlet 15 is formed in the front upper portion of the storage chamber 11. As shown in FIG.

The suction port 14 is an opening for sucking the air inside the storage chamber 11 and extends along the lateral direction of the storage chamber 11 . The blowout port 15 is an opening for blowing air into the interior of the storage chamber 11 . The air outlet 15 extends in the lateral direction of the storage chamber 11 . Although not shown in the drawings, a straightening member having a honeycomb structure is appropriately attached to the outlet 15 .

The air circulation means 20 comprises an air passage 20a and a circulation fan 20b. The air passage 20 a is an air passage from the inlet 14 to the outlet 15 .

Such an air passage 20a communicates with the suction port 14 and includes a lower side air passage 21 outside the storage chamber 11 and below it, and a rear air passage 21 outside the storage chamber 11 and on the rear side thereof. An air passage 22, a storage box 23 outside and above the storage chamber 11, and an upper side air passage 24 outside and above the storage chamber 11 and communicating with the outlet 15. They are configured in a manner in which they communicate with each other.

The circulation fan 20 b is driven to circulate the air and is provided at a predetermined portion of the lower air passage 21 . In this embodiment, the circulation fan 20b is provided at a predetermined portion of the lower air passage 21, but in the present invention, the arrangement position of the circulation fan 20b is not particularly limited. It may be provided anywhere as long as it can exhibit the function of 20b.

In such an air circulation means 20, the air inside the storage chamber 11 is sucked through the suction port 14 by driving the circulation fan 20b, and the sucked air passes through the air passage 20a. 15, and the air is blown out into the storage chamber 11 through the outlet 15, thereby circulating the air between the inside and the outside of the storage chamber 11. FIG.

The drain water treatment device 30 includes a refrigeration circuit 30a and an evaporation unit 30b. The refrigerating circuit 30a is constructed by sequentially connecting an evaporator 31, a compressor 32, a condenser 33, and an expansion mechanism 34 through a refrigerant pipe line 35, and a refrigerant is sealed inside.

The evaporator 31 is installed inside the storage box 23 and cools the air passing through the inside of the storage box 23 by evaporating the supplied refrigerant. The compressor 32 sucks and compresses the refrigerant evaporated in the evaporator 31 by being driven.

The condenser 33 is installed in an upright position in front of the top wall portion of the case body 10 . The condenser 33 exchanges heat between the refrigerant that has been compressed by the compressor 32 and passes through it and the air that passes around it, thereby condensing the refrigerant. The expansion mechanism 34 adiabatically expands the refrigerant condensed in the condenser 33 to a low temperature and low pressure state, and supplies the refrigerant to the evaporator 31 .

The evaporating unit 30 b is installed on the rear side of the condenser 33 and on the front side of the storage box 23 , and comprises a drain pan 36 and a drain sheet body 37 .

The drain pan 36 is for storing drain water generated in the evaporator 31 constituting the refrigerating circuit 30a through a gutter (not shown).

The drain sheet body 37 has a substantially rectangular parallelepiped shape. The drain sheet body 37 is erected on the drain plate 36 on the rear side of the condenser 33 . The drain sheet body 37 is formed by processing filter paper, and sucks the drain water stored in the drain pan 36 by capillary action.

A wind tunnel 40 is provided above the drain plate 36 and behind the drain sheet body 37 . The wind tunnel 40 has a rectangular parallelepiped shape with an open front surface, and is provided with a blower fan 45 in such a manner as to close an upper opening (not shown) formed in the upper part. The blower fan 45 sends the air that has passed through the wind tunnel 40 upward from the upper opening when driven.

As shown in FIG. 2, a circulating member 38 is connected to the drain pan 36 constituting the evaporation unit 30b. The circulating member 38 is composed of, for example, a resin hose or the like, and is connected to the drain pan 36 at one end 381 and is branched into two on the way so that the other end of each is exposed from the case body 10 . It constitutes a connecting end portion 382 . Such a connecting end portion 382 can be connected to the connecting end portion 382 of another evaporating unit 30b applied to another adjacent showcase, as shown in FIG. Also, the connecting end 382 has a function of closing a hollow portion (not shown) when not connected to another evaporating unit 30b, that is, in a normal state.

Accordingly, when the circulating member 38 is connected to the other evaporation unit 30b through the connection end 382, it allows the drain water to flow. is partially blocked to regulate the flow of drain water.

In the showcase configured as described above, the air inside the storage chamber 11 is sucked through the suction port 14 by driving the circulation fan 20b, and passes through the lower air passage 21 and the rear air passage 22. and enter the storage box 23 . The air entering the storage box 23 passes through the upper air passage 24 and reaches the outlet 15 and is blown out from the outlet 15 . The air blown out from the blowout port 15 forms an air curtain by flowing toward the suction port 14 while passing through the tip of each product shelf 12 .

In the drain water treatment device 30 , the refrigerant compressed by the compressor 32 is condensed by the condenser 33 and reaches the expansion mechanism 34 by driving the compressor 32 . The refrigerant sent to the expansion mechanism 34 is adiabatically expanded and then sent to the evaporator 31, where it exchanges heat with the air passing through the storage box 23 while passing through the refrigerant passage of the evaporator 31 and evaporates. The evaporated refrigerant is sucked into the compressor 32 and circulated.

By driving the compressor 32 in this manner, the air passing through the storage box 23 is cooled, and the cooled air is blown out from the outlet 15. As a result, the air inside the storage chamber 11 is discharged. The products placed on the product placement shelf 12 and the deck pan 13 are cooled.

Further, by driving the compressor 32, drain water is generated in the evaporator 31, and the generated drain water is supplied to the drain plate 36 through the gutter and stored in the drain plate 36.

In the drain water treatment device 30, the blower fan 45 is driven so that the air outside the case body 10 passes through the condenser 33 from the front to the rear, and then passes through the drain sheet body 37. . The air that has passed through the drain sheet body 37 in this manner passes through the inside of the wind tunnel 40 and is sent upward from the upper opening.

By the way, since the circulating member 38 is connected to the drain pan 36, as shown in FIG. can be made Therefore, when a large amount of drain water is produced in any one of the showcases, the drain water can be circulated to the other evaporation unit 30b, and the drain water can be evaporated. Therefore, according to the drain water treatment device 30, the drain water can be treated well.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made.

In the above-described embodiment, as shown in FIG. 3, the evaporation units 30b are connected to each other in the showcases adjacent to each other. The connection between the units 30b may be appropriately selected. In other words, it does not necessarily have to be connected to another evaporation unit 30b.

Further, in the present invention, as shown in FIG. 4, the drainage member 39 may be provided in a manner connected to any one of the circulation members 38 in the mutually connected evaporation units 30b. The drainage member 39 is composed of, for example, a resin hose or the like, and has one end 391 connected to an arbitrary flow member 38 and the other end 392 closed by a plug 393 . By providing such a drainage member 39, the other end 392 of the drainage member 39 is introduced into a predetermined drainage area, and the plug 393 is removed to open the drain, thereby discharging the drain water to the drainage area through the drainage member 39. can be made

In the above-described embodiment, the circulating member 38 is connected to the drain pan 36, but in the present invention, the circulating member is connected to the drain sheet body and drains the drain water by capillary action. It may be distributed.

In the above-described embodiment, the connecting end portion 382 of the flow member 38 normally has the function of closing the hollow portion. Alternatively, a blocking portion may be provided to block an arbitrary portion of the flow member.

Although not described in the above embodiment, the present invention may be provided with height adjusting means for adjusting the height level of the drain pan. When such a height adjusting means is provided, it is possible to adjust the height of the drain pans of the evaporating units connected to each other so that the height levels of the drain pans are the same. can be adjusted to be relatively high, and the circulation of drain water can be promoted.

In the above-described embodiment, the drain water treatment apparatus 30 applied to showcases has been described, but the present invention is not limited to showcases and may be applied to other fixtures such as vending machines.

30 drain water treatment device 30a refrigeration circuit 30b evaporation unit 31 evaporator 32 compressor 33 condenser 34 expansion mechanism 35 refrigerant pipe 36 drain plate 37 drain sheet body 38 circulation member 382 connection end

Claims (3)

A drain water treatment apparatus comprising an evaporator unit for evaporating drain water generated in the evaporator, which is provided corresponding to an evaporator constituting a refrigeration circuit in which a refrigerant is enclosed together with a compressor, a condenser and an expansion mechanism. hand,
a circulation member having one end connected to the evaporation unit and the other end forming a connection end,
The circulation member is provided through the connection end portion in correspondence with an evaporator that constitutes a refrigeration circuit different from the refrigeration circuit, and is connected to another evaporation unit that evaporates drain water generated in the evaporator. In this case, while allowing the drain water to flow, if the other evaporation unit is not connected through the connecting end, a part of itself is blocked to restrict the flow of the drain water. A drain water treatment device characterized by: The evaporation unit is
a drain plate for storing the drain water;
a drain sheet body that is erected on the drain pan and sucks the drain water by capillary action,
2. The drain water treatment apparatus according to claim 1, wherein said one end of said circulation member is connected to said drain pan. 3. The drain water treatment apparatus according to claim 2, wherein said evaporation unit comprises height adjusting means for adjusting the height level of said drain pan.

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