JP4680623B2 - Waste water evaporator for cooling storage - Google Patents

Description

  The present invention relates to an evaporation apparatus for drainage water such as defrost water provided in a cooling storage.

For example, a commercial refrigerator is equipped with an evaporating dish that accumulates defrosted water from the cooler on the bottom of the refrigerator body, while a code heater is meandered on the bottom of the evaporating dish and energizes the code heater. It is known that the stored wastewater is heated to forcibly evaporate and discarded (for example, see Patent Document 1). Also, in this type of evaporator, a temperature sensor is provided at a predetermined location on the bottom of the evaporating dish, and when the temperature at the same location exceeds a predetermined value, the energization to the code heater is stopped to prevent so-called emptying. ing.
Here, in general, the code heater is arranged in a meandering manner with a certain interval over substantially the entire bottom surface of the evaporating dish, and the temperature sensor is provided at a position near the end of the bottom surface.
JP 2001-343182 A

In the above conventional structure, when the cord heater is energized with no water in the evaporating dish, the center of the bottom surface of the evaporating dish is in a state of heat buildup, and the rate of temperature rise is higher than the end side. Therefore, there is a possibility that the central portion becomes extremely hot before the end portion where the temperature sensor is arranged reaches the energization cutoff temperature.
The present invention has been completed based on the above circumstances, and an object thereof is to prevent the evaporating dish from being locally heated.

Invention 請 Motomeko 1, on the outer surface of the bottom of the evaporation pan for storing the waste water such as defrosted water, while the linear heater is wired in line with an interval, a predetermined portion of the inner surface of the bottom surface The thermostat temperature sensing cylinder for detecting the temperature in the vicinity of the same location is pressed and attached, and the waste water stored by energizing the heater is heated to evaporate, based on the temperature detected by the thermostat temperature sensing cylinder. In the drainage evaporation apparatus of the cooling storage that controls the energization of the heater, the heater is more densely arranged in the vicinity of the location where the thermostat temperature sensing cylinder is provided on the outer surface of the bottom surface of the evaporating dish than in other locations. It is wired, and the at least a portion of the bottom surface of the evaporation dish, inclined surfaces became upslope so that high than other portions are formed, upper part of the inner surface of the inclined surface The position, the thermostat temperature sensing tube is characterized in was configured to one end of the length direction are attached in an oblique posture to come to a position higher than the other end.

End of the invention of claim 2, wherein the one described in claim 1, in a region other than the vicinity of distribution設箇plant the thermostat temperature sensing tube in the outer surface of the bottom surface of the front Symbol evaporating dish, in comparison to the central portion of the region The part is characterized in that the heater is densely wired.

<Invention of Claim 1>
When the detected temperature of the thermostat temperature sensing cylinder reaches a predetermined value, the power supply to the heater is cut off. When the heater is energized with no water in the evaporating dish, the heater is densely wired in the vicinity of the location where the temperature sensing tube is placed, so the temperature rise rate can be relatively high, and the temperature rise rate at other locations Compared with that in the vicinity of the location of the temperature sensing cylinder , it is kept at the same level as low. Then, since the heater is de-energized when the place where the temperature becomes high at an early stage reaches the predetermined temperature, the temperature of the evaporating dish is lower than the temperature near the place where the temperature sensing cylinder is provided over the entire area. It is kept at the same level.

Further, when water is stored in the evaporating dish and the water level is lowered by heating with the heater and the water level is lowered, the upper position of the inclined surface provided with the temperature sensing cylinder is first heated. Since the energization to the heater is cut off by the detection, it is reliably prevented that the temperature is excessively raised in the lower part.
<Invention of Claim 2 >
Even in areas other than the vicinity of the location where the temperature sensing tube is located, the heaters are coarsely wired in the central part where heat is easily trapped, so that the temperature rises almost evenly in the same area, resulting in partial overheating. Is prevented.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the case where it applies to the vertical refrigerator for business is illustrated, First, the whole structure of a refrigerator is demonstrated with reference to FIG. The refrigerator main body 10 is constituted by a vertically long heat insulating box body having a front opening, and is supported by legs 11 erected at the four corners of the lower surface, and the inside is a storage chamber 12. The front opening of the storage chamber 12 is partitioned into two upper and lower openings 14 by a partition frame 13, and a heat insulating door 15 is attached to each opening 14 so as to be swingable.

A machine room 17 is provided on the upper surface of the refrigerator body 10, specifically, a portion of the upper surface excluding a predetermined area on the back surface side, and a refrigeration apparatus 18 is installed therein. The refrigeration apparatus 18 includes a compressor 19, a condenser 20, and the like, and is attached to a heat-insulating base 21 as a unit so that the base 21 closes the window hole 23 on the ceiling wall of the storage chamber 12. It is attached.
A drain pan 24 also serving as an air duct is stretched on the lower surface side of the window hole 23 in the ceiling portion of the storage chamber 12, and a cooler chamber 25 is formed above the drain pan 24. The bottom surface of the drain pan 24 is formed to have a downward slope toward the inner edge (the left side in FIG. 1), and a suction port 26 is opened in the front area, and an outlet 27 is cut out on the inner edge side. It is not formed.

  Inside the cooler chamber 25, a cooler 29 (evaporator) and an internal fan 30 are provided facing the suction port 26. The cooler 29 is circulated and connected to the above-described refrigeration apparatus 18 through refrigerant piping, and constitutes a well-known refrigeration cycle. When the internal fan 30 is driven while operating the refrigeration apparatus 18 (compressor 19), the indoor air in the storage chamber 12 is sucked into the cooler chamber 25 from the suction port 26 by the internal fan 30, and the air is While flowing through the cooler 29, cold air is generated by heat exchange, the cold air is blown out from the outlet 27 along the inner surface of the storage chamber 12, and the cold air is circulated and supplied into the storage chamber 12 to be cooled. It has become so.

On the other hand, in order to remove the frost adhering to the cooler 29 or the like, a defrosting operation is appropriately performed. Therefore, the cooler 29 is provided with a defrost heater 32, and a drainage channel 33 is formed on the back wall 10 </ b> A of the refrigerator body 10. The drainage channel 33 is provided vertically in the back wall 10 </ b> A, and an upper end thereof faces the drainage port 24 </ b> A of the drain pan 24, and a lower end is opened on the lower surface of the refrigerator main body 10.
The defrosting operation is performed by energizing and heating the defrosting heater 32, and after the defrosting water is received by the drain pan 24, it flows down the drainage channel 33 and is installed on the lower surface of the refrigerator main body 10 as described later. It can be received by the evaporating dish unit 40.
A steam passage 35 is formed on the back wall 10 </ b> A to the side of the drainage channel 33 described above from the lower surface to the upper surface.

As shown in FIG. 2, the evaporating dish unit 40 has a structure in which an evaporating dish 41 is accommodated in a case 42 and a cover plate 43 is covered on the upper surface. The evaporating dish 41, the case 42, and the cover plate 43 are all made of a metal plate such as a stainless steel plate.
The case 42 is formed in a slightly deeper box shape with the upper surface and both front and rear surfaces opened, and has a length that is slightly shorter than the depth of the refrigerator body 10 and a width that is a fraction of the width of the refrigerator body 10. Have. A notch 45 is formed in a predetermined region on the front end side of the bottom surface of the case 42. Further, a flange 47 bent outward at a right angle is formed on the upper edges of the left and right side plates 46.

The evaporating dish 41 has a square dish shape, and has a length dimension of about 2/3 of the entire length of the case 42 and a width dimension slightly smaller than the width of the case 42. As shown in FIGS. 3 and 4, the bottom surface 50 of the evaporating dish 41 is divided into a front region 51 of about 1/4 on the near side and a rear region 52 of the remaining about 3/4. The inside of the evaporating dish 41 has the deepest rear edge side, and has a depth of about 2/3 of the depth of the case 42, and the rear region 52 of the bottom surface 50 has a small angle (1 to 2 °) toward the front. It is formed in the up slope. On the other hand, the front region 51 is formed with an upward slope that forms an angle of about 15 ° following the rear region 52, and the predetermined region at the front end thereof is formed with a steep upward slope of about 75 °. Yes. The upper edge of the steep slope portion 51A reaches the same height as the upper edge of the rear plate 53. Therefore, the steep slope portion 51A also serves as a front plate.
An outward flange 56 is formed on the upper edge of the front end surface 51 </ b> A, the rear surface plate 54, and the left and right side plates 55 of the evaporating dish 41. Of these, the flanges 56 of the left and right side plates 55 are bent at right angles twice downward and outward to form an attachment plate 57 that overlaps the flange 47 of the case 42 described above.

Now, on the back surface (outer surface) of the bottom surface 50 of the evaporating dish 41, an evaporating dish heater 60 made of a code heater is affixed over almost the entire surface. Although one evaporating dish heater 60 is wired, as shown in FIG. 4, in the rear region 52 (strictly, including a part of the front region 51 adjacent to the rear region 52), evaporation is performed. The dish heater 60 is wired in a zigzag shape along the width direction of the evaporating dish 41 (vertical direction in the figure). However, the pitch between the heater wires 61 is maximum at the central portion in the width direction and gradually decreases toward both ends.
(Center) pitch a> (intermediate) pitch b> (end) pitch c
The pitch c at the end is about 1/3 of the pitch a at the center.

On the other hand, the evaporating dish heater 60 is wired in a zigzag shape along the length direction of the evaporating dish 41 in the front area 51 (excluding the above-described adjacent area strictly). In the evaporating dish heater 60, six heater wires 61 excluding one heater wire 61A arranged on the steep slope portion 51A are wired at equal intervals, and the pitch d is the minimum pitch on the rear region 52 side described above. It is almost the same as the pitch c at a certain end. The pitch between the two heater wires on the front side is larger than the equally spaced pitch d.
The evaporating dish heater 60 is wired as described above, and is attached by aluminum foil (not shown). Further, the lead wire 62 of the evaporating dish heater 60 is connected to a control device provided in an electrical box (not shown) in the machine room 17 through the wall surface of the refrigerator body 10 or the like.

On the surface (inner surface) of the bottom surface 50 on the front region 51 side of the evaporating dish 41, a thermostat temperature sensing cylinder 65 (hereinafter simply referred to as a temperature sensing cylinder 65) that is a temperature sensor is pressed and attached by a mounting bracket 66. ing. Specifically, as shown in FIG. 4, the temperature sensing cylinder 65 is a position slightly closer to one side from the center of the width of the evaporating dish 41 and a position corresponding to the true surface of the third heater wire 61 </ b> B from the front side. In FIG. 5, the heater wire 61B is attached in close contact with the surface of the bottom surface 50 in a posture along the heater wire 61B. The temperature sensing cylinder 65 outputs an off signal when it is detected that the operating temperature is set to, for example, “115 ° C.” and the temperature at the mounting position of the temperature sensing cylinder 65 has reached the operating temperature (115 ° C.). Yes. A signal line (not shown) of the temperature sensing cylinder 65 is connected to a control device in the electrical box, and when the off signal is received from the temperature sensing cylinder 65, the energization to the evaporating dish heater 60 is cut off. It is like that.
A temperature fuse may be provided in the middle of the evaporating dish heater 60, for example, in the middle of the foremost heater wire 61A.

The lid plate 43 is formed in an elongated flat plate shape that covers the upper surface of the case 42. On the rear side in the length direction of the lid plate 43, a steam vent hole 67 made of a rectangular hole elongated in the width direction is opened at the center in the width direction, and to the side of the steam vent hole 67. A drain hole 68 made of a round hole is opened.
On the left and right side edges of the lid plate 43, side plates 69 bent at a right angle downward are formed, and flanges 70 are formed outward from the lower edges of the side plates 69. A notch 71 is formed on the front end side of the cover plate 43 in correspondence with the notch 45 on the case 42 side.

  Then, the evaporating dish 41 is placed in the case 42 with the trailing edges aligned, and the left and right mounting plates 57 of the evaporating dish 41 are placed on the left and right flanges 47 of the case 42, so that the evaporating dish 41 is As shown in FIG. 1, the back surface of the bottom surface 50 to which the evaporating dish heater 60 is attached is supported in a state where it floats from the bottom surface of the case 42. Subsequently, the cover plate 43 is covered, the left and right flanges 70 are placed on the attachment plate 57 of the evaporating dish 41, and the upper surface opening of the evaporating dish 41 is closed by the cover plate 43. On both the left and right sides, between the flanges 47 and 70 of the case 42 and the cover plate 43 with the attachment plate 57 of the evaporating dish 41 interposed therebetween, a plurality of places are fixed by fasteners 73 such as screws. A front cover 75 (see FIG. 1) is attached to the front opening. As described above, the evaporating dish unit 40 is assembled.

  A pair of left and right rails 77 facing in the front-rear direction are attached to the bottom surface of the refrigerator body 10, and the evaporating dish unit 40 described above is pushed in from the front side while placing the left and right flanges 47 on the corresponding rails 77. It is fixed when the edge is pushed in until it reaches the rear surface of the refrigerator main body 10. At this time, in the evaporating dish unit 40, the lid plate 43 is in close contact with the bottom surface of the refrigerator main body 10, and the drainage holes 68 and the steam vent holes 67 provided on the rear side of the lid plate 43 include the rear wall 10 </ b> A of the refrigerator main body 10. The drainage passage 33 and the steam passage 35 formed in the bottom are respectively aligned with the lower surface openings.

Next, the operation of this embodiment will be described.
The energization control to the evaporating dish heater 60 is turned on using the energization to the defrost heater 32 as a trigger, and is turned off when the temperature sensing cylinder 65 detects the operating temperature and outputs an off signal. After a lapse of time, if the temperature detected by the temperature sensing cylinder 65 falls below the operating temperature and returns to the on state, and if the defrost heater 32 is still energized at this time, the evaporating dish heater 60 is also turned on again. If energization to the frost heater 32 is already cut off, the evaporating dish heater 60 is turned on as the defrost heater 32 is energized at the start of the next defrost operation.

As a normal operation, when the defrosting operation is started, that is, when the evaporating dish heater 60 is turned on, waste water remains in the evaporating dish 41, and the remaining waste water is initially heated and some time passes. Then, the new drainage (defrost water) from the cooler 29 and the like passes through the drainage channel 33 of the back wall 10A of the refrigerator body 10 and flows into the evaporating dish 41 from the drainage hole 68 of the lid plate 43 and is heated together. After that, the defrosting operation is finished and the inflow of waste water is stopped. As shown in FIG. 4, the evaporating dish heater 60 is continuously turned on, and the waste water w stored in the evaporating dish 41 is heated and forcibly evaporated, and the generated steam is removed from the cover plate 43. The steam passage 35 of the back wall 10A of the refrigerator body 10 rises from the hole 67 and is discarded to the outside through the top opening.
As the evaporation progresses, the water level gradually decreases, and a so-called emptying state is reached near the position where the temperature sensing cylinder 65 is attached, so that the temperature gradually increases. When the temperature sensing cylinder 65 detects the operating temperature (115 ° C.), the energization to the evaporating dish heater 60 is turned off. At this time, since the drainage remains in the other area of the bottom surface 50 of the evaporating dish 41, there is no possibility that the temperature of the area is excessively increased to the dangerous temperature.

On the other hand, at the start of the defrosting operation, drainage may not remain in the evaporating dish 41. For example, there is a case where the amount of defrosted water is originally low due to the operation state, ambient temperature, etc., and the waste water in the evaporating dish 41 is discarded by natural evaporation before the next defrosting operation.
In this case, when the evaporating dish heater 60 is turned on, the empty evaporating dish 41 is heated, so that the temperature is raised early, and the temperature sensing cylinder 65 detects the operating temperature early to detect the evaporating dish heater 60. Is turned off. At this time, as long as the defrosting operation is finished and the energization of the defrost heater 32 is not interrupted, the evaporating dish heater 60 is turned on again. Off may be repeated.

  As described above, when the evaporating dish heater 60 is turned on in a state where there is no water in the evaporating dish 41, the temperature is increased when the temperature sensing cylinder 65 detects the operating temperature and the evaporating dish heater 60 is turned off. I am concerned that some parts will come out. In this regard, in this embodiment, the evaporating dish heater 60 is more densely wired near the position where the temperature sensing cylinder 65 is disposed (front region 51) than at other locations (rear region 52). The temperature rise rate at other locations is kept at the same level as low as compared with that near the location where the temperature sensing cylinder 65 is disposed. Then, when the place where the temperature becomes high at an early stage reaches the operating temperature (115 ° C.) of the temperature sensing cylinder 65, the energization to the evaporating dish heater 60 is cut off. The temperature is kept at the same level at most lower than the temperature in the vicinity of the location where the warm cylinder 65 is disposed.

When the evaporating dish heater 60 was turned on and then turned off by the thermo function of the temperature sensing cylinder 65 in a state where there was no water in the evaporating dish 41, the maximum temperature at each location on the bottom surface 50 of the evaporating dish 41 was measured. The results shown in the table of FIG. 5 were obtained.
The temperature at each location on the bottom surface 50 of the evaporating dish 41 is simulated by the surface temperature of the evaporating dish heater 60 wired at the same location. It is. In addition, since the degree of heating of the evaporating dish 41, that is, the evaporation capacity of the waste water varies depending on the ambient temperature and the fluctuation of the applied voltage to the evaporating dish heater 60, low temperature and low voltage conditions [ambient temperature: 5 ° C, voltage: specified voltage And 90% of (230V) = 207V]) and high temperature and high voltage conditions [ambient temperature: 43 ° C., voltage: 110% of specified voltage (230V) = 253V]).

In the above results, all positions “D”, “E”, “F”, “G” of the front region 51 to which the temperature sensing cylinder 65 is attached, and the end portion in the width direction of the evaporating dish 41 in the rear region 52. At the position “C”, the maximum temperature is lower than the specified value “170 ° C.”. However, at the center position “A” and the intermediate position “B” in the width direction of the evaporating dish 41 in the rear region 52, the maximum temperature exceeds the specified value “170 ° C.”. For example, when the evaporating dish heater 60 is wired at an equal pitch of about pitches b to c as in the prior art, the maximum temperature particularly at the position corresponding to the central position “A” is “ Compared with a value exceeding the specified value such as “200 ° C. or higher”, the excess value from the specified temperature at the positions “A” and “B” in this embodiment is small, and the time exceeding the specified temperature is also short. Therefore, it is considered that there is no problem.
Further, even within the rear region 52, there is no significant difference in the maximum temperature at the center position “A”, the intermediate position “B”, and the end position “C” in the width direction of the evaporating dish 41, and the entire rear area 52 and thus the evaporating dish. It can be confirmed that the temperature is increased uniformly over the entire bottom surface 50 of 41.
It has also been confirmed that when the evaporating dish heater 60 is repeatedly turned on and off, the maximum temperature described above decreases with each cycle.

As described above, in the present embodiment, when the evaporating dish heater 60 is energized in a state where there is no water in the evaporating dish 41, the evaporating dish heater 60 is densely wired in the vicinity of the location where the temperature sensitive cylinder 65 is disposed. While the rate of temperature increase is relatively high, the rate of temperature increase at other locations is low and at most the same level. Since the temperature of the evaporating dish heater 60 is cut off when the point where the temperature becomes high at an early stage reaches the operating temperature of the temperature sensing cylinder 65, the temperature of the evaporating dish 41 is distributed over the entire area. The temperature is kept at a level that is lower than the temperature in the vicinity of the installation place, and it is prevented that the temperature becomes high locally.
Even in the region other than the vicinity of the location where the temperature sensing cylinder 65 is disposed, that is, in the rear region 52, the evaporating dish heater 60 is wired more coarsely than the end side in the central portion where heat is easily trapped. The temperature rises and partial overheating is more reliably prevented.

  Further, in the present embodiment, the bottom surface 50 of the evaporating dish 41 is an inclined surface in which the rear region 52 is substantially horizontal and the front region 51 is raised upward, and the position on the upper side of the inclined surface is felt. A warm cylinder 65 is attached. Accordingly, in the state where the drainage is stored in the evaporating dish 41, when the water level is lowered due to the evaporation of water by being heated by the evaporating dish heater 60, the upper portion of the front region 51 where the temperature sensing cylinder 65 is disposed. Since the position is first heated and the operating temperature is detected there, the energization to the evaporating dish heater 60 is cut off, so that it is reliably prevented that the temperature rises in the lower part.

<Embodiment 2>
FIG. 6 shows Embodiment 2 of the present invention, in which the shape of the evaporating dish 41A is changed. In the evaporating dish 41A of the second embodiment, as shown in FIG. 5A, the predetermined area of the rear edge is deepest, and the bottom surface 50A of the evaporating dish 41A has a small angle (2) over the entire length from the deepest part toward the front edge. (Up to about 3 °).
Further, as shown in FIG. 5B, an evaporating dish heater 60 made of a code heater is wired on the back surface of the bottom surface 50A of the evaporating dish 41A in the same manner as in the first embodiment. That is, the bottom surface 50A is divided into a front area 51 of about 1/4 on the near side and a rear area 52 of the remaining about 3/4 for convenience, and the evaporating dish heater 60 has an evaporating dish 41A in the rear area 52. In a zigzag shape along the width direction (vertical direction in the figure), and in the front region 51, in a zigzag shape along the length direction of the evaporating dish 41A, wiring is performed at the same pitch as in the first embodiment. Has been.
Further, the temperature sensing cylinder 65 is located along the heater line 61B at a position slightly closer to one side from the center of the width of the evaporating dish 41A and at a position corresponding to the true surface of the third heater line 61B from the front side. It is attached in close contact with the inner bottom surface in such a posture.

  Also in the second embodiment, as in the first embodiment, when the evaporating dish heater 60 is energized in a state where there is no water in the evaporating dish 41A, the vicinity of the place where the temperature sensing cylinder 65 is disposed is higher than the other parts. The temperature of the evaporating dish 41 </ b> A is cut off when the temperature rate is relatively high and the energization of the evaporating dish heater 60 is interrupted when the part of the temperature sensing cylinder 65 reaches the operating temperature at an early stage. The temperature of the temperature sensing cylinder 65 is kept to be at most the same level as that of the temperature sensor 65 over the entire area, so that a local high temperature is prevented. Further, the temperature in the rear region 52 rises almost evenly, and partial overheating is more reliably prevented.

<Embodiment 3>
FIG. 7 shows Embodiment 3 of the present invention. In the third embodiment, the mounting posture of the thermostat temperature sensing cylinder 65 is changed.
For example, in the first embodiment, when the water level is gradually reduced from the state in which the drainage is covered by the temperature sensing tube 65 and the water level is lowered, the temperature sensing tube 65 may be in a state where water is accumulated. Then, the temperature sensing cylinder 65 detects a temperature lower than the temperature of the bottom surface 50 of the evaporating dish 41, that is, a delay occurs until the operating temperature is detected, and the timing for turning off the evaporating dish heater 60 is delayed. There is a risk of overheating.

  Therefore, in the third embodiment, the temperature sensing cylinder 65 is in an oblique posture and is mounted by being pressed against the surface of the bottom surface 50 of the evaporating dish 41 by the mounting bracket 66. For this reason, when the water level of the drainage which has covered the temperature sensing cylinder 65 gradually decreases, the drainage does not remain in the temperature sensing cylinder 65 because it flows down following the temperature sensing cylinder 65 in an oblique posture. As a result, the temperature of the bottom surface 50 of the evaporating dish 41 can be directly detected, that is, the operating temperature can be accurately detected, and the evaporating dish heater 60 can be controlled to be turned off at an appropriate timing.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the first embodiment, if the pitch of the evaporating dish heater on the rear area side is made a little wider as a whole, the maximum temperature when the empty evaporating dish is heated is below the specified value also in the entire rear area side. It is possible to hold down .

The longitudinal cross-sectional view of the refrigerator which concerns on Embodiment 1 of this invention Disassembled perspective view of evaporating dish unit Side view of evaporating dish Bottom view Table showing the surface temperature of the evaporating dish heater (A) Side sectional view of evaporating dish according to Embodiment 2, (B) Bottom view The top view of the evaporating dish which concerns on Embodiment 3.

Explanation of symbols

  41, 41A ... evaporating dish 50, 50A ... bottom 51 ... front area 52 ... rear area 60 ... evaporating dish heater (code heater) 61, 61B ... heater wire 65 ... thermostat temperature sensing tube (temperature sensor)

Claims (2)

On the outer surface of the bottom of the evaporating dish that collects drainage of defrosted water, etc., linear heaters are wired side by side at intervals, while a predetermined location on the inner surface of the bottom surface detects the temperature near the same location. A thermostat temperature sensing cylinder is pressed and attached, and the waste water stored by energizing the heater is heated to evaporate, and the energization to the heater is controlled based on the temperature detected by the thermostat temperature sensing cylinder. In the drainage evaporator of the cooling storage
In the vicinity of the location where the thermostat temperature sensing tube is located on the outer surface of the bottom surface of the evaporating dish, the heater is wired more densely than other locations ,
And, at least a part of the bottom surface of the evaporating dish is formed with an inclined surface that has an upward slope so as to be higher than the other parts, and the position on the upper side of the inner surface of the inclined surface is A drainage evaporator for a cooling storage, wherein the thermostat temperature sensing cylinder is mounted in an oblique posture in which one end side in the length direction is located higher than the other end side . In a region other than the vicinity of the location where the thermostat temperature sensing cylinder is disposed on the outer surface of the bottom surface of the evaporating dish, the heater is more densely wired at the end than in the center of the region. drainage evaporator cooling reservoir of claim 1 Symbol mounting to.

Images