JP2698255B2 - Drain water evaporator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain water evaporator for use in refrigeration and air conditioning equipment, such as refrigerators, refrigerated showcases, air conditioners, and the like.

[0002]

2. Description of the Related Art Conventionally, in a drain water evaporator of this type of refrigeration and air conditioning equipment, a system has been adopted in which a high-temperature refrigerant pipe included in a refrigeration cycle is directly inserted into an evaporating dish for receiving drain water and immersed in the drain water. . According to this method, since the drain water can be directly heated by the heat generated from the high-temperature refrigerant pipe, the most efficient use of the exhaust heat of the high-temperature refrigerant pipe can be expected, and smooth evaporation of the drain water can be expected.

[0003]

However, since a high-temperature refrigerant pipe made of metal (usually a copper pipe) is immersed in water, it is necessary to apply plating or resin coating to prevent corrosion, which is extremely expensive. Become. On the other hand, even if such processing is performed, there is a risk that local corrosion will occur in pinholes and the like, and refrigerant leakage will occur due to perforations. In addition, since the high-temperature refrigerant pipe usually enters the inside of the evaporating dish from above, when the evaporating dish is pulled out for cleaning, the evaporating dish is once lowered and detached from the high-temperature refrigerant pipe, and The troublesome work of drawing out to a person is required.

Accordingly, Japanese Patent Application Laid-Open No. Hei 2-13778 (F.
In 25D21 / 14), the high-temperature refrigerant pipe is discarded, the evaporating member including a hydrophilic porous plate is housed in the evaporating dish, immersed in drain water, and the evaporating area is enlarged by absorbing the drain water into the evaporating member. However, there is a limit to increase the area of the evaporating member due to a space problem, and there is naturally a limit to the improvement of the evaporation ability.

In the above-mentioned publication, the meandering bent evaporating member is merely placed in the evaporating dish, and the evaporating member falls down due to vibration or the like during transportation or operation of the refrigeration cycle.
There was also a problem that the area exposed on the water surface was reduced and the evaporation ability was reduced.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem. By providing an evaporating member in an evaporating dish without immersing a high-temperature refrigerant pipe in drain water, the evaporating capacity is improved. It is an object of the present invention to provide a drain water evaporating apparatus which is improved and has a simple structure so that an evaporating member in an evaporating dish is prevented from falling down.

[0008]

[0009]

A drain water evaporating apparatus 1 according to the present invention comprises an evaporating dish for receiving drain water, and an evaporating member 30 provided in the evaporating dish 4. The evaporating member 30 forms a peak 45 and a valley 46 by bending a strip-shaped hydrophilic porous plate in a meandering shape, and the valleys 46 of the evaporating member 30 are inserted into opposing side walls of the evaporating dish 4. A holding portion 41 having a valley shape to be engaged is formed.

[0010]

[0011]

According to the drain water evaporator 1, the drain water in the evaporation dish 4 is heated by the heat from the high-temperature refrigerant pipe 28 via the heating plate 27. This high-temperature refrigerant pipe 28 is
Since it is not inside, it does not hinder the disposition of the evaporating member 30. The heated drain water in the evaporating dish 4 evaporates from the surface of the drain water, is sucked up from the valley portion 46 of the evaporating member 30, and evaporates from the surface of the evaporating member 30. Air is blown from the blower (condenser blower 21) to the evaporating member 30 to promote evaporation. When the blower is stopped, the evaporated steam or warm air from below is removed by the evaporating member 30.
Passes below the crest 45, which is the upper portion of the crest, at which time the crest 45 is heated from below by steam or warm air, thereby promoting evaporation from the surface of the crest 45. According to the drain water evaporator 1 of the first aspect of the present invention, the trough 46 of the evaporating member 30 is inserted into and engaged with the holding portion (the groove 41) of the evaporating dish 4.
The evaporating member 30 is hard to fall down. At the same time, the valley portion 46 of the evaporating member 30 is brought into a position where it is immersed in the drain water in the evaporating dish 4 by this insertion, and the drain water in the evaporating dish 4 is sucked up from the valley portion 46 and evaporated from the surface of the evaporating member 30. I do.

[0012]

Next, an embodiment will be described with reference to the drawings. FIG. 1 is a lower longitudinal sectional view of a four-sided glass refrigerated showcase 2 as an embodiment to which the evaporating apparatus 1 of the present invention is applied, FIG. 2 is a perspective view of the refrigerated showcase 2, and FIG. FIG. 4 is a vertical sectional front view of the evaporator 1, FIG. 5 is a vertical sectional side view of the evaporator 1, and FIG.
FIG. 7 is a perspective view of the evaporating dish 4.

The refrigerated showcase 2 includes a storage room 8 having four sides surrounded by a glass door 6 and a double glazing 7 on the upper side.
A cooling chamber 9 is formed below the cooling chamber 9 and a machine chamber 3 is formed at the lowermost part. A plurality of stages of shelves 10 are installed in the storage room 8, and a plate fin type cooler 11 and a blower 12 included in the refrigeration cycle are arranged in the cooling room 9. The cooling chamber 9 is defined in a container-like water-resistant heat-insulating wall 14 having an open upper surface, and the lower end of the double glass 7 is attached to a bottom frame 15 attached to an opening edge of the heat-insulating wall 14. A cool air suction port 16 is formed in the bottom frame 15 inside one side edge of the heat insulating wall 14, and a cool air outlet 17 is formed in the inside of the other side edge, and a bottom plate 18 is installed between the two ports 16 and 17. Then, the storage chamber 8 and the cooling chamber 9 are separated by the bottom plate 18. When the blower 12 is operated, the cooler 11
1 is blown out from the cool air outlet 17 into the storage chamber 8 as indicated by an arrow in FIG. 1, and the cool air after circulating through the storage chamber 8 is returned to the cooling chamber 9 from the cool air suction port 16 by the cool air circulation. It is forcibly formed, whereby the inside of the storage room 8 is cooled to a predetermined refrigeration temperature.

Next, a compressor (not shown) included in the refrigerating cycle, a condenser 20, a blower 21 for the condenser, and the evaporator 1 of the present invention including the blower 21 for the condenser shown in FIG. Filter 24 and other electrical components 25
And ventilation holes 23, 23 formed on the left and right side surfaces thereof, and a front panel as shown in FIG.
It is openable and closable at 2.

The evaporator 1 includes a heating plate 27 made of a steel plate, a meandering high-temperature refrigerant pipe 28 through which a high-temperature refrigerant of 80 ° C. to 90 ° C. discharged from a compressor of a refrigeration cycle flows, a fixed plate 29 made of a steel plate, stainless steel, It comprises an aluminum or resin evaporating dish 4, an evaporating member 30, and the condenser blower 21 (the condenser blower 21 is not shown in FIGS. 4 to 6).

The heating plate 27 has left and right legs 31, and burring holes 32, 32 projecting downward from the lower surfaces of the legs 31, 31. The tips of the burring holes 32, 32 are attached to the pedestal of the refrigerated showcase 2. 33 and screws 34, 34
Is fixed to the pedestal 33. Thereby, the heating plate 2
7 is remarkably reduced in contact area with the pedestal 33, and the heat from the high-temperature refrigerant pipe 28 is not easily transmitted to the pedestal 33. Further, the heat of the high-temperature refrigerant pipe 28 is also transferred from the fixing plate 29 to the heating plate 2.
7, the efficiency of heat conduction to the heating plate 27 can be significantly increased as a whole. The condenser 20, the condenser blower 21 and the heating plate 27 are arranged side by side on a pedestal 33 as shown in FIG.

A mounting portion 36 at the center of the heating plate 27 is formed with a pressing portion 37 which is protruded downward by a pressing process. The high-temperature refrigerant pipe 28 is disposed on the lower surface of the mounting portion 36 of the heating plate 27 so as to escape from the seating portion 37, and is pressed by the fixing plate 29 from below. In this state, the fixing plate 29 is fixed to the heating plate 27 by screws 39, 39
So that the high-temperature refrigerant pipe 28 and the heating plate 2
7 in a heat exchange relationship.

As shown in an enlarged view in FIG. 7, the evaporating dish 4 includes a water receiving portion 40 extending rearward only at the upper portion, and a plurality of valley-shaped grooves 41 as holding portions are integrally formed on the left and right side walls. They are formed side by side. The evaporating dish 4 is placed on the placing portion 36 of the heating plate 27. As shown in FIG.
3 can be freely taken in and out as shown by an arrow in FIG. 3 to facilitate cleaning of the evaporating dish 4. Also, the filter 24 located on the air suction side of the condenser 20 can be freely taken in and out. Even when the evaporating dish 4 or the filter 24 is not completely inserted, the front panel 22 is closed to push the filter into an appropriate position. It is a structure that can be.

Here, a drainage channel 43 communicating the bottom of the cooling chamber 9 and the machine room 3 is formed in the heat insulating wall 14, and a drainage pipe 44 is attached to the drainage channel 43 on the machine room 3 side. . The evaporating dish 4 has a stopper 2 at the rear end of the heating plate 27.
The water receiving portion 40 is inserted into an appropriate position on the mounting portion 36 in a state where the base portion of the water receiving portion 40 is in contact with 7A, and the water receiving portion 40 is located below the drain pipe 44 in this state.

The evaporating member 30 is a Univex (trade name) S
B is a band made of a hydrophilic porous plate such as B. The base material is a non-woven fabric such as polyester fiber, and the base material is heat-cured with fine-particle phenol to form a fixing agent. For this reason, it is immersed in an alcohol-based solvent and then dried, and because of its fibrous nature, it can be flexibly stretched and folded and has a repulsive force against bending. As shown in FIG. 5, the evaporating member 30 is bent in a meandering shape a plurality of times so that a peak 45, a valley 46, and an inclined portion 47 are obtained. The evaporating dish 4 is inserted into and engaged with the groove 41 of the evaporating dish 4 and disposed in the evaporating dish 4. Groove 4 of each valley 46 of evaporating member 30
At the time of insertion into 1, the width gradually increases toward the top of the valley portion 46.
Use a wide valley shape and secure the holder from diagonally above.
The insertion operation is easily performed while confirming. In addition, each valley 46
Into the grooves 41 of the evaporating dish 4 respectively.
Thus, the valley portion 46 is held in the groove 41 of the evaporating dish 4 and does not fall down due to vibration. At the same time, the tip of the valley portion 46 enters the bottom of the evaporating dish 4 and is immersed in the drain water in the evaporating dish 4. Will be.

Drain water dropped from the cooler 11 flows from the drain passage 43 through the drain pipe 44 and is received in the evaporating dish 4 from the water receiving part 40. The drain water stored in the evaporating dish 4 is heated by the heating plate 27, the temperature rises, and the state is apt to evaporate. The drain water is sucked up from the valley 46 of the evaporating member 30 and diffuses into the evaporating member 30. Drain with increased temperature
The temperature of the evaporating member 30 rises due to the suction of water,
Evaporation from the emitting member 30 is promoted. On the other hand, when the blower 21 for the condenser is operated, the outside air is sucked from the left ventilation port 23 as shown by the dashed arrow in FIG. 1, cools the condenser 20, passes through the evaporating member 30 to the left and right, and A forced air circulation discharged from the port 23 is formed in the machine room 3.
Due to this blowing, the humidity around the evaporating member 30 decreases,
As a result, the drain water sucked up by the evaporating member 30 and being easily evaporated is smoothly evaporated from the surface of the inclined portion 47. Then, after the condenser blower 21 stops,
Steam evaporated from the drain water in the evaporation dish 4
Air or warm air from below is a mountain above the evaporating member 30.
Pass below the portion 45, when the peak 45
Is heated from below by the warm air, and the blower 21 for the condenser is heated.
After the stop, evaporation from the surface of the peak 45 is promoted.

In the embodiment, the evaporator of the present invention is applied to a refrigerated showcase. However, the present invention is not limited to this, and the present invention is effective even when applied to a refrigerator or an air conditioner.

As described in detail above, in the drain water evaporating apparatus, the drain water received in the evaporating dish is heated from the heating plate to increase the temperature and evaporate easily. Water is diffused into the evaporating member having a large area with peaks and valleys formed in a meandering shape,
In addition, evaporation is promoted by being blown. As a result, sufficient evaporation capacity can be obtained without inserting the high-temperature refrigerant pipe into the evaporating dish, the high-temperature refrigerant pipe does not hinder the disposition of the evaporating member, and the evaporating dish itself can be delivered. It can be done easily. Also, when the ventilation is stopped,
Evaporated steam or warm air from below passes below the mountain, which is the upper part of the evaporating member, and at that time, the mountain is heated from the lower surface by the steam or warm air, separates from the evaporating dish, and is a mountain where the evaporation ability is likely to be reduced. Evaporation from the part surface can be promoted.

[0024]

According to the drain water evaporator of the first aspect of the invention, the valleys of the evaporating member are inserted into the valley-shaped holding portions on both sides of the evaporating dish. It can be easily performed using the valley shape and confirming the holding portion from obliquely above. In addition, since the valley portion of the evaporating member is inserted and held in the holding portion of the evaporating dish, the evaporating member does not fall down due to vibration or the like during transportation or operation of the device, and
Even if the evaporating member is used for a long period of time, the shape of the evaporating member does not collapse, and the required evaporating capacity can be maintained. Furthermore, the insertion engagement causes the valley of the evaporating member to enter the evaporating dish and reach a position where it is immersed in the drain water stored inside, so that the evaporating member can be positioned more easily.

[Brief description of the drawings]

FIG. 1 is a lower longitudinal sectional view of a refrigerated showcase.

FIG. 2 is a perspective view of a refrigerated showcase.

FIG. 3 is a perspective view of a machine room portion of the refrigerated showcase.

FIG. 4 is a vertical sectional front view of the evaporator.

FIG. 5 is a vertical side view of the evaporator.

FIG. 6 is an exploded perspective view of the evaporator.

FIG. 7 is a perspective view of an evaporating dish.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Evaporator 4 Evaporating dish 11 Cooler 21 Condenser blower 27 Heating plate 28 High-temperature refrigerant pipe 30 Evaporation member 41 Groove 45 Crest part 46 Valley part

Claims (1)

(57) [Claims] 1. An evaporating dish for receiving drain water and an evaporating member disposed in the evaporating dish, wherein the evaporating member is formed by bending a strip-shaped hydrophilic porous plate in a meandering manner. A trough-shaped holding portion is formed on the opposite side walls of the evaporating dish, the trough-shaped holding portion being inserted and engaged with the trough of the evaporating member.
A drain water evaporator characterized by being constituted .