JP2003202179A - Drain water evaporating disposition device for freezing and refrigerator show case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate water drain operation by an operator by 100% evaporating and disposing drain water such as condensation water or defrosting water (hereafter referred to drain water) generated from a show case with a freezing and refrigerating device built in used in small and medium size shops or the like with an apparatus additionally installed in the show case and to save total energy of the shop with this device installed by using drain water for cooling the radiator of the freezing and refrigerating device to save extra energy consumption for evaporation and improving cooling efficiency of the freezing and refrigerating device. <P>SOLUTION: Drain water generated from a cooler of the freezing and refrigerating device of the show case is atomized with an ultrasonic oscillator and atomized water is blown out right before the radiator of the freezing and refrigerating device to cool the radiator and evaporate atomized water with heat thereof for completely evaporated the same. Since just blowing out atomized water causes re-condensation, leak and contamination by unwanted bacteria, a storage tank and an atomization tank are separated and conditions to avoid reproduction of unwanted bacterial as much as possible and to perform efficient atomization are maintained, and atomized water is supplied when the radiator is under a high temperature condition. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a food counter of a supermarket or a shopping center,
The present invention relates to an evaporation treatment device for drainage of dew condensation water of air in a cooler or defrosting water generated when defrosting defrosting occurs in a showcase mainly having a freezing or refrigeration device, so-called drain water. It is a thing.

[0002]

2. Description of the Related Art Conventionally, when a large number of showcases are used in a large store or the like, a compressor for freezing and refrigeration and a cooling device are separately installed, and a refrigerant pipe and a drain water drain pipe are centrally used. A separate freezer refrigerator showcase is used. In this case, the problem of drain water treatment does not occur, but a large amount of initial investment cost and a long depreciation period are required due to the need for specialized work such as installation of piping equipment and large-scale refrigeration equipment. As the polarization of ultra-large stores and small-scale decentralized stores has advanced in recent years, it is becoming increasingly necessary to open stores to meet market needs, the burden of initial investment is light, and the layout of refrigerating machines can be changed easily. The demand for built-in showcases is increasing. However, when installing the built-in type, the problem was the treatment of drain water. Due to the nature of drain water, the products to be displayed, season, time zone, installation location,
The amount generated by etc. varies greatly. Therefore, it was not a problem that simply draining the drain water tank would be sufficient. Therefore, it was necessary to install an alarm device that detects the amount of water in the drain water tank with a sensor and prompts drainage work. In this case, the worker needs to perform drainage work each time the alarm sounds, which makes drainage drainage management cumbersome. Then, in order to reduce the troublesome drainage work, the drain water collected in the drain water tank is heated by a compressor for freezing and refrigeration and heated by a dedicated electric heater or the like, and vaporization and evaporation are promoted by blowing air by a blower. Measures were being taken. FIG. 2 is a schematic sectional structural view of a freezer-refrigerator-equipped showcase, and FIG. 3 shows an example of a conventional natural evaporation type drain water treatment device. Condensation water generated in the cooler of the showcase, defrosting deicing water, and recondensation water of the humidifier supplied to maintain the freshness of the display are collected in the tray 1 on the bottom and opened upward by the pipe 2. It is guided to the evaporation dish 3.
The drain water collected in the evaporating dish 3 was evaporated by the evaporating plate 4 having permeability such as a nonwoven fabric with one end dipped. In order to promote evaporation, a part of a radiator or an electric heater is installed at the bottom of the evaporation dish to heat and blow air by a blower.
Then, the drain water that could not be evaporated flows over the standard water level and collects in the drain water tank 5 installed in the lower part. In this case, the drain water is not evaporated and drained positively, but is only accumulated. Then, the accumulated drain water is detected by a sensor or the like as in the same manner as before, and the worker is carrying out a work to drop it every time. In such a conventional evaporation processing apparatus, further extra energy is consumed for evaporation, which is not efficient and contradicts energy saving. Moreover, since complete evaporation is difficult, drainage work by workers remains, and management costs remain for the equipment introduction costs, which is in a state that cannot be ignored. Furthermore, the fact that warm drain water stays for a long time
There was also a problem in terms of hygiene, which led to the propagation of bacteria in the tank.

[0003]

DISCLOSURE OF THE INVENTION The present invention is an instrument device for additionally installing drain water generated from a built-in type showcase incorporating a refrigerating and refrigerating apparatus in the showcase.
% The purpose is to eliminate the drainage work by the worker by performing the evaporation process. Furthermore, the drain water is used for cooling the radiator of the refrigerating and refrigerating equipment to suppress the extra energy consumption when evaporating, and also improve the cooling efficiency of the refrigerating and refrigerating equipment, aiming at comprehensive energy saving of the installation store.

[0004]

Therefore, according to the present invention, the drain water generated from the cooler of the freezer-refrigerator of the showcase is atomized by the ultrasonic vibrator, and the atomized water is radiated by the radiator of the freezer-refrigerator. Immediately before, the structure is adopted in which the atomized water is vaporized by the heat while cooling the radiator and completely evaporating it.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the present invention will be described below. Basically, an apparatus or the like according to the present invention is additionally installed or partially modified in a built-in type showcase incorporating an existing refrigerating and refrigerating apparatus. By doing so, it is used for practical use. The basic configuration of the present invention is composed of the following assembly components. (1) Main tank part. A tank that temporarily holds the drain water of the showcase. It is also possible to use the existing tank. A thin tube 8 connects with the atomizing tank 7 for atomizing. Basically, keep the temperature low to prevent the growth of germs. (2) Atomization unit. An atomization tank 7 connected to the main tank 6 by a thin tube 8, a power supply and oscillation control circuit 10, an ultrasonic transducer 11, a blower fan 12, and the like are provided. The ultrasonic transducer 11 floats in the atomization tank 7 by the float 13 and maintains an appropriate water depth. The power supply and oscillation control circuit 10 takes in each signal of the water level detection signal, the surface temperature of the radiator 14 and the ON / OFF of the radiator cooling fan 15, and determines whether the atomized water vaporizes in a safe state when passing through the radiator. Based on the judgment, the output to the ultrasonic transducer 11 is turned on / off to control the atomization operation. Further, the atomizing tank 7 maintains a warm water state, improves atomization efficiency, and avoids residence for a long time to prevent the propagation of various bacteria. (3) Ejector unit. Atomizing unit outlet 16
9 connected to the flexible duct 17 having a large diameter
Equipped with. The emitter 9 may be a pipe with a closed tip,
Immediately before the radiator 14 of the existing refrigerating machine, a plurality of outlets 18 for uniformly dispersing atomized water are provided. Emitter 9
A recondensation pool is provided on the bottom of the
The return thin tube 19 is connected to surely return the re-condensed water to prevent water leakage to the vicinity of the radiator 14. (4) Heat exchanger section. Although a dedicated device such as a metal pipe may be incorporated, a desired effect can be obtained by bending back a plurality of thin tubes and adhering them closely to the surface of the compressor 21 of the existing refrigerating machine. When the recondensation water passes, it heats and absorbs heat to warm the recondensation water and return it to the atomization tank 7. The material and structure of the heat exchanger unit 20 may be selected according to the surface temperature of the compressor 21 and the temperature to be heated.

[0006]

EXAMPLES The present invention embodies the structures described in detail below based on the above basic constitution. Although the showcase incorporating the device of the present invention is a conventional product, detailed description thereof will be omitted, but the drain water treated by the present invention is collected in the tray 1 provided at the bottom of the display shelf and collected in the main tank 6. To be In the present invention, since the main tank 6 has only the function of temporarily storing drain water, the material shape can be freely set,
Although it is useful for effectively utilizing the narrow bottom of the showcase, it is the same as the conventional one that an opening for receiving drain water from the showcase is provided on the upper portion. The tank of the existing showcase may be used as it is, but in order to keep the drainage water from growing for a long time, a heat insulating material may be added to prevent the growth of various bacteria. The drain water of this main tank 6 is
They are guided to the atomizing tank 7 whose bottoms are connected to each other by a thin 8-tube. When diverting an existing tank, a hole will be opened and a thin pipe will be connected with a pipe connector, and partial modification will occur. It is sufficient that the thin tube 8 can supply the amount of water to be atomized to the atomization tank 7 that performs the atomization operation, is strong against an external load, and does not cause blockage due to bending. A filter for preventing foreign matter from entering may be provided in the middle of the thin tube. Main tank 6
The atomizing tank 7 and the atomizing tank 7 are connected by a thin tube 8 in order to prevent the movement of drain water between both tanks or the movement of heat due to convection,
The main tank 6 is used to keep the atomizing tank 7 at a high temperature in order to utilize the characteristics of the ultrasonic transducer whose atomization capacity increases as the water temperature rises, and to prevent the growth of miscellaneous bacteria represented by Legionella bacteria. This is to keep the inside as cold as possible.
Both tanks are separated, the atomization tank 7 is made as small as possible, the warmed drain water is quickly atomized and transported, and the heat of the radiator 14 evaporates to shorten the retention in the hot water part and to eliminate the above-mentioned miscellaneous bacteria. It prevents the breeding and scattering of. As an example, as shown in FIG. 7, when the water temperature is 10 ° C., the atomizing ability of the ultrasonic transducer 11 is improved by about 45% at 50 ° C. On the other hand, it is known that Legionella bacteria can grow at 25 ° C to 45 ° C with an optimum temperature of 36 ° C. Further, it is known that it is likely to be generated in the accumulated water at the above temperature for a long period of time.
In order to more efficiently achieve this purpose, when the apparatus of the present invention is designed and manufactured by incorporating it into a showcase from the beginning, the main tank 6 is covered with a heat insulating material to raise the temperature of drain water at low temperature. It is possible to prevent the above, or to positively heat the atomizing tank 7 adjacent to or in contact with the refrigerating and refrigerating compressor 21 which becomes high temperature. Further, the operating temperature of each part and the operation status signal of the refrigerating equipment can be used in detail, and for example, the compressor 21 and the radiator fan 1 can be used.
5 makes it possible to perform the atomizing operation after the radiator temperature rises after the operation of 5, and stop the operation of the compressor 21 and the radiator fan 15 after stopping the atomizing operation. The effect of the invention can be maximized. Further, it is possible to avoid surface dew condensation due to the low temperature main tank 6 and to cool the compressor 21 by means of the atomizing tank 7, which leads to an increase in efficiency as a whole and an improvement in hygiene can be expected. In the case of a general-purpose type explained as an example of the present invention, that is, a so-called post-mounting type, what can be obtained as a control signal is limited, but in order to achieve the above-mentioned restrictions from the viewpoint of hygiene, the minimum signal is heat radiation. The temperature of the container 14 and the operation (ON / OFF) of the radiator fan 15 for cooling the container 14 are detected. The temperature of the radiator 14 is picked up by the heat detector 22, and the operation of the radiator fan 15 is picked up by the presence or absence of power supply branched from the radiator fan lead wire 23 by the connection connector 24.
It is used as a control signal. These signals enter the power supply and oscillation control circuit 10 of the atomization unit, and by being logically processed, the temperature of the radiator 14 is sufficiently increased, and the radiator cooling fan 15 operates to generate atomized water. Radiator fin 2
The atomization operation is performed only when it can be determined that the vaporization can be safely performed by passing through 5. When the temperature of the radiator 14 is low, the atomized water cannot be vaporized and re-condenses to wet the bottom of the radiator 14, and further water leaks to the installation floor surface, which may lead to the propagation of various bacteria. Similarly, even if the temperature is high, the radiator fan 15 stops and the atomized water stays, causing a problem of recondensation due to contact with the low temperature part. Therefore, when the radiator fan 15 stops, it is necessary to immediately stop the atomization operation. Conventionally, there have been examples in which drain water is directly sprayed onto the radiator fins 25 or vaporized by a general ultrasonic humidifier, but there are problems such as clogging in the radiator fins 25 and leakage of water due to re-condensed water. Problem has occurred. In the present invention, in order to improve the countermeasures against them, the flexible duct 17 and the emitter 9 are provided, and the atomized water is released immediately before the radiator 14.
It is characterized in that the heat is exchanged by passing through the high temperature radiator fins 25 and vaporized and evaporated together with the atomization operation control described above. The heat of vaporization at this time cools the radiator 14, and the load on the compressor 21 can be reduced. This drain water heating of the atomization tank 7 can be easily achieved considering that the season when a large amount of drain water is generated is from the rainy season to the summer, and the atomization capacity is balanced with the winter season when the generation amount decreases. It becomes possible to adopt a small ultrasonic vibrator, and it is possible to supply an economical and safe device. The atomized water discharger 9 has a pipe whose end is closed to form a hole serving as an outlet for the atomized water, and is fixed to the radiator 14 which is an existing facility with a mounting bracket 26. At this time, be careful not to bend the middle of the flexible duct 17 so that the tip of the emitter 9 is slightly upward, and recondensate water should be collected at the joint with the flexible duct 17. Then, the return thin tube 19 to the atomizing tank 7 is arranged at the connecting portion. Thereby, the recondensation water generated in the emitter 9 or the flexible duct 17 can be returned to the atomizing tank 7 by the return thin tube 19 without leaking outside, and the radiator 14 or the compressor surface may be provided on the way. The heat exchanger portion 20 that absorbs the high heat is disposed so as to heat the recondensation water. By doing so, the low-temperature condition where re-condensation is likely to occur is promptly removed, the atomization capacity is improved, and the processing capacity is automatically increased. The specific atomization operation is performed by the atomization unit, and the ultrasonic transducer 1
Atomization tank 7 containing 1 and a power supply and an oscillation control circuit 10 for driving and controlling an ultrasonic transducer 11 are arranged in a storage section separated from the tank and a partition wall to blow and convey atomized water. A fan 12 is provided. The size of the atomizing tank 7 that draws the drain water from the main tank 6 is equal to that of the ultrasonic transducer 1.
It is determined from the size of 1 and the required atomization capacity. This atomization unit is physically a large extension, and needs to be miniaturized as much as possible. Therefore, in order to keep the main tank 6 and the atomization tank 7 to the minimum size for accommodating the vibrator part, the pump and the control device for keeping the liquid level constant are eliminated, and instead the ultrasonic vibrator 11 or the like is used. Has a floating structure that moves up and down in the tank. The ultrasonic transducer 11 and the power supply / oscillation control circuit 10 and the like are connected by a flexible output cable 27 to enable reciprocal movement within a certain range. The atomizing tank 7 is connected to the main tank 6 by a thin tube 8 and maintains the same water surface position, but it changes momentarily depending on the presence or absence of a defrosting operation. In order to follow this change in the water surface and keep the water depth of the ultrasonic transducer 11 constant, the ultrasonic transducer 11
Float the substrate 28 with the attached and its bottom cover 29
A structure that is roughly surrounded by 3 and floats is adopted. A substrate on which an ultrasonic transducer 11 is assembled in order to make the horizontal cross-sectional shape in the tank approximately match the horizontal cross-sectional shape of the float to enable vertical movement and to prevent drain water from remaining in an extra gap when the water level decreases. 28, the bottom cover 29, and the bottom and peripheral shapes formed by the float 13 that surrounds them, and the bottom and peripheral shapes of the atomization tank are combined. This should be the same as the purpose of warming the minimum drain water and atomizing it to prevent unnecessary retention when heating to increase the efficiency of the ultrasonic transducer by preventing the growth of various bacteria. You can The operation status of the existing refrigeration equipment is as described above, but the status of drain water, that is, the status of drain water in the main tank 6 is determined by grasping the water level status in the atomizing tank 7 that is interlocked. It controls the power supply and the output of the oscillation control circuit 10. The increase / decrease in the water level of the atomization tank 7 is detected by the magnet 30 embedded in the float 13 and the magnetically sensitive reed switch 31 installed outside the non-magnetic material wall forming the tank, and output depending on the water level. The control and the idle operation when the water level is reduced are prevented to prolong the life of the ultrasonic transducer 11 and prevent seizure. By using a plurality of reed switches 31, output control can be performed in multiple stages and fine control can be performed. Since the magnet 30 in the atomizing tank 7 can be embedded in the float 13, it is easy to protect it from corrosion and the like, and does not hinder the movement of the float 13 incorporating the ultrasonic vibrator or the like in the tank. Further, since the reed switch 31 that senses the magnetic force and turns on / off can be placed outside the atomizing tank 7, it is not necessary to perform rusting or waterproofing, and the detection sensitivity is not reduced. If the amount of processing required is greater than the atomization capacity of the ultrasonic vibrator alone, a plurality of ultrasonic vibrators 11 are used, but in order to avoid interference, a partition 32 connecting the atomization tank 7 to the bottom is used. Divide into multiple parts and install one transducer in each section. Substrate 2 to which ultrasonic transducer 11 is attached
8, the back cover 29, and the float 13 are also independent from each other to avoid interference. The installation of a plurality of the ultrasonic transducers 11 becomes a redundant design of the important atomization operation and leads to the improvement of reliability. In addition, the same effect can be obtained by installing multiple atomization unit parts, in which case the multiple atomization units can be installed with a slight difference in height to increase or decrease the water level in the main tank to improve the overall atomization capacity. Variable operation is possible. The water level detection is not limited to the above-mentioned magnetic means, and a conventionally used float switch or the like may be used, but a simple structure and high reliability is prioritized. In this embodiment, the drain water is transferred from the main tank 6 to the atomization tank 7 by a natural flow using a thin tube, but in the case of an integrated structure tank, if a partition wall or a ridge is provided in the middle. Well, if there is a difference in height in the case of a separation tank, it does not prevent the use of water pumps. In that case,
The water pump may be controlled according to the water level detection result. Further, when performing the precise control of the present invention, the water temperature of the atomization tank 7 is detected, and, for example, ON / OFF control of an electric heater is performed so as to reach a predetermined water temperature, and power supply and oscillation control below the predetermined water temperature are performed. Control such as suppressing the oscillation output of the circuit 10 and performing high-efficiency operation in an appropriate temperature state may be performed.

[0007]

EFFECTS OF THE INVENTION The present invention can prevent the generation of various bacteria in the main tank due to the above-described structure, etc., and the ability of the ultrasonic vibrator to be enhanced by heating the atomizing tank to increase the ultrasonic vibration. The size of the child can be reduced or the number of equipment installed can be reduced, atomization can be performed in a short time, the growth of various bacteria can be prevented and suppressed, and drain water such as drain water can be safely treated. Also,
By cooling the radiator of the freezer-refrigerator with atomized water, it is possible to increase the cooling efficiency of the radiator and achieve total energy saving. And the original purpose,
It is possible to reduce drainage work by workers,
It is possible to significantly reduce management costs.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an evaporation processing apparatus according to the present invention.

FIG. 2 is an example of a schematic structural diagram of a showcase with a built-in refrigerator / freezer.

FIG. 3 is an example of a conventional natural evaporation type drain water treatment device.

FIG. 4 is an external view in which an atomized water discharger is attached to a radiator of an existing refrigeration system.

FIG. 5 is a partial cutaway view and accompanying components of an ultrasonic atomizing unit according to the present invention.

FIG. 6 is a bottom view of a partition wall and a contact shape when a plurality of ultrasonic transducers are used.

FIG. 7 is a characteristic diagram of water temperature vs. atomization ability of an ultrasonic transducer.

[Explanation of symbols]

1 Showcase bottom tray 21 Compressor 2 Drain pipe 22 Heat detector 3 Evaporating tray 23 Radiator fan lead wire 4 Evaporating plate 24 Connection connector 5 Drain water tank 25 Radiator fin 6 Main tank 26 Mounting bracket 7 For atomization Tank 27 Output cable 8 Capillary tube 28 Substrate 9 Discharger 29 Bottom cover 10 Power supply and oscillation control circuit 30 Magnet 11 Ultrasonic transducer 31 Magnetically sensitive reed switch 12 Blower fan 32 Partition wall 13 Float 14 Radiator 15 Radiator cooling fan 16 Fog Degassing unit outlet 17 Flexible duct 18 Discharger discharge hole 19 Return thin tube 20 Heat exchanger section

Claims (5)

[Claims] 1. A showcase for incorporating a refrigerating and refrigerating device in a housing, which comprises at least a main tank for storing drainage (drain water) generated by dew condensation and defrosting and defrosting by a cooler, and a thin tube or the like. The atomization water that is connected and is connected to the atomization tank that houses the transducer part of the ultrasonic atomization device, and is connected to the atomization tank outer outlet and a flexible duct, and is placed immediately before the radiator of the refrigerating machine. With a balloon
Equipped with a thin tube for returning re-condensed water collected at the bottom of the outlet and flexible duct to the atomization tank, at least two types of radiator surface temperature of the refrigerating and refrigerating equipment and whether or not the radiator cooling fan is driven Evaporation of wastewater, etc. incorporating an ultrasonic atomizer characterized by detecting a control signal and judging the conditions under which atomized water can be safely evaporated, and controlling the atomization operation by ultrasonic vibration. Processing equipment. 2. A power source, an oscillation control circuit and the like are arranged in close proximity to each other, and an atomizing tank portion in which an ultrasonic transducer for atomizing operation by ultrasonic waves is installed and a cooler such as a showcase are generated. Separates the main tank part that directly receives drain water (drain water) and connects both tank parts with a thin tube to enable a slow flow of drain water, keeping the main tank water temperature cold and for atomization The evaporation treatment apparatus according to claim 1, wherein the tank is installed and set in a heated state. 3. A substrate to which an ultrasonic transducer is attached, a bottom cover, etc. are floated on the surface of water in an atomization tank with a float or the like formed of foam material or the like, and the water depth from the surface of the water to the transducer is changed to change the water level. On the other hand, in the installation structure of the oscillator etc. that always maintains a constant and appropriate water depth, the substrate after the oscillator etc. is attached, the bottom cover covering the substrate, and the float that roughly covers the periphery or bottom part of both A structure in which the shape of the bottom portion is approximately matched to the shape of at least the bottom portion of the atomizing tank for accommodating and storing the bottom portion and the surroundings thereof, and when the water level is reduced, both are substantially in close contact with each other to minimize the residual water amount. 1. The evaporation treatment apparatus according to 1. 4. A thin pipe or the like for returning recondensed water collected at the outlet of the atomized water discharger and the bottom of the flexible duct to the atomizing tank, and on the way to the surface of the compressor of the refrigerating machine, etc. A heat exchanger part that closely absorbs heat is provided to cool the compressor, heat the returned recondensed water, and, if necessary, an electric heating device additionally installed at the bottom of the atomization tank to control the water temperature in the atomization tank. The evaporation treatment apparatus for waste water and the like according to claim 1, wherein the evaporation treatment apparatus for waste water and the like is maintained at a temperature outside the optimum temperature for breeding various germs. 5. An ultrasonic atomization device in which ultrasonic transducer assembly units, which float the ultrasonic transducer unit in a float and maintain an appropriate water depth, are installed close to each other on the same water surface. The evaporation of waste water, etc. according to claim 1, characterized in that the surroundings are surrounded by partition walls, or are partitioned by partition walls or the like in accordance with a plurality of transducers for accommodating the inside of the tank of the ultrasonic atomizer, and interference interference is eliminated and reduced. Processing equipment.