KR20020054288A - A cabinet for cooling and heating of water and foods using cooling cycle - Google Patents

Abstract

PURPOSE: A hot and chilled water generator, refrigerator and food warming cabinet is provided to minimize power consumption by integrating a food warming cabinet and a hot water generator. CONSTITUTION: A hot and chilled water generator, refrigerator and food warming cabinet includes a compressor(10) compressing refrigerant; a first condensing part(17) inputting part of high-temperature refrigerant discharged from the compressor to a warming compartment to radiate heat and primarily condensing rest of the refrigerant; a second condensing part(23) circulating part of the refrigerant discharged from the first condensing part in a hot water tank to primarily preheat water in the hot water tank and secondarily condensing rest of the refrigerant; an expander(24) expanding refrigerant discharged from the second condensing part; a first evaporating part(35) circulating part of refrigerant discharged from the expander in a cold water tank to cool down water in the cold water tank and primarily evaporating rest of the refrigerant; and a second evaporating part(45) inputting part of refrigerant discharged from the first evaporating part into a refrigerating compartment to cool down air in the refrigerating compartment and secondarily evaporating rest of the refrigerant.

Description

Cold and hot water chiller and cold storage using a refrigeration cycle {A CABINET FOR COOLING AND HEATING OF WATER AND FOODS USING COOLING CYCLE}

The present invention relates to a cold / hot water machine and a cold / cold storage using a refrigerant circulation refrigeration cycle, and more specifically, to cool and hot water in restaurants and other service industries, as well as to cool and warm the water and food or tableware, etc. It relates to a cold and hot water machine and a cold and hot storage using a type refrigeration cycle.

In general, the refrigerant circulation refrigeration cycle is a low-pressure gaseous refrigerant is compressed in the compressor and then delivered to the condenser in a high-pressure gas state where it is condensed in the liquid phase by releasing heat, and the condensed refrigerant is expanded by means of a pressure expands through the expander to the evaporator It is supplied, absorbs heat from the outside in the evaporator, evaporates, and then returns to the compressor.

In this state change, the condenser emits heat to the outside, so it is used as a heating source, and the evaporator absorbs heat from the outside, so it can be used as a cooling source.

In a conventional cold / hot water machine and a cold storage cabinet using a refrigerant circulation refrigeration cycle, as shown in FIG. 1, a cold / warming means having a water replenishment tank 1 and a halogen lamp 4 as a heating means are installed using a refrigeration cycle. Through the cold and hot mode, the refrigerator and the warm room is used integrally as a cold room (5) that can be used selectively.

As described above, the conventional cold and cold room (5) has a disadvantage that can not be used in parallel with the cold room and the warm room at the same time because it is made selectively through the cold-temperature conversion mode, do not fully utilize the heat exchange efficiency of the refrigerant circulation refrigeration cycle. Not only that, but it also causes a lot of power consumption.

Therefore, in order to solve such a problem, there are some problems to be overcome in order to integrate the hot and cold water heater and the cold and hot refrigerator into one, or to separate them separately and apply them to the cold and hot water heater and the cold and hot refrigerator which are used in restaurants and other service industries.

First, the volume of equipment should be minimized because the kitchen space of restaurants and other service industries is narrow. To do this, the cooling system itself should be simple and maximize the cooling efficiency.

Second, in order to reduce the total power consumption of the cold / hot water machine and the cold / cold storage using the refrigerant circulation refrigeration cycle, the power consumption of the cooling device and the heating device should be minimized.

Therefore, the present invention is to integrate not only a refrigerator and a water cooler, but also a refrigerator and a water heater to a single device, which is suitable for a large restaurant and other service industries, to maximize the cooling performance and the heating performance in a short time, and to increase the system scale. It is to provide a cold / hot water dispenser and a cold storage cabinet using a refrigeration cycle that can minimize the power consumption by compactly and actively using the thermal efficiency of the refrigerant circulation refrigeration cycle.

1 is a system configuration diagram of a conventional cold and hot water heater and cold and cold storage.

2 is a perspective view of a cold / hot water combiner and a cold storage using a refrigeration cycle according to the present invention.

3 is a system configuration diagram of a cold / hot water machine and a cold / cold storage using a refrigeration cycle according to the present invention.

4A and 4B are diagrams for explaining the operation principle of a three-way valve according to the present invention.

5 is a perspective view of a hot water tank with a heater according to the present invention.

6 is a flow chart of the temperature control of the cold / hot water machine and the cold / hot storage using the refrigeration cycle according to the present invention.

Explanation of symbols on the main parts of the drawings

1: water refill tank 2: cold water tank 3: hot water tank

4: halogen lamp 5: cold and cold room 8: body

9 cooling fan 10 compressor 12 refrigerant tube

14: first condenser 16: heat chamber 17: first condenser

18: first three-way valve 18a: first flow path 18b: second flow path

18c: third euro 20: second condenser 22: hot water tank

22a: hot water field 23: second condenser 24: inflator

26: dryer 28: second three-way valve 28a: fourth euro

28b: fifth euro 28c: sixth euro 30: first bypass refrigerant tube

32: first evaporator 32a: before the cold water 34: cold water tank

35: first evaporator 36: first temperature controller 38: third three-way valve

40: second bypass refrigerant pipe 44: refrigerator compartment 42: second evaporator

45: second evaporator 46: second temperature control unit 48: water refill tank

50: pressure pump 52: water purifier

The present invention relates to a cold and hot water machine and a cold and hot storage using a refrigerant circulation refrigeration cycle,

A compressor for compressing the refrigerant to high temperature and high pressure;

Some of the refrigerant discharged from the compressor is a first condensing unit for discharging heat to the heat chamber and condenses the remaining refrigerant first;

A part of the refrigerant discharged from the first condenser to circulate the inside of the hot water tank to preheat the hot water tank firstly and to condense the remaining refrigerant secondly;

An expander configured to expand the refrigerant discharged from the second condensation unit;

Some of the refrigerant discharged from the expander to circulate the inside of the cold water tank to cool the water in the cold water tank and the first evaporator for evaporating the remaining refrigerant first; And

Some of the high-temperature refrigerant discharged from the first evaporator is injected into the refrigerating chamber to cool the air in the refrigerating chamber, and a second evaporation unit for evaporating the remaining refrigerant secondary.

The first condenser is connected in parallel with the first condenser and the first condenser for condensing some of the refrigerant discharged from the compressor to the first refrigerant pipe allowing the remaining refrigerant from the compressor to be introduced into the greenhouse. And a portion of the refrigerant discharged from the outlet of the first condenser is introduced into the second refrigerant pipe installed inside the hot water tank at the front end of the second condenser, and the remaining refrigerant is supplied to the second condenser at the same time. It characterized in that the configuration further comprises a first three-way valve is formed.

The first condenser is selected as a heating source for forming a warm room, the second condenser is a heating source for indirectly preheating the hot water tank, and is connected in series with the first condenser,

The first evaporator is selected as a cooling source for cooling the cold water tank, and the second evaporator is selected as a cooling source for forming a refrigerating chamber and is connected in series with the first evaporator.

In addition, the water refill tank which can be stored in the lower part of the refrigerating compartment is integrally installed in the main body, and the pressure pump is independently installed on one side of the water replenishment tank, and a water purifier and a water dispenser are installed on one side of the pressure pump, between the compressor and the expander The first condenser and the second condenser are arranged in series and installed in the main body, but a coolant tube is formed in parallel with the first condenser to form a coolant tube using heat generated by heat exchange between the coolant tube and the ambient temperature. Install a hot water tank in parallel with the second condenser, and install an expander and a dryer in series at predetermined intervals at the rear end of the second condenser.

In addition, a cooling circuit in which a first evaporator and a second evaporator are disposed in series between the dryer and the compressor and connected in parallel with the respective evaporators is connected. The refrigerant pipes connected in parallel with the first evaporator are disposed in the cold water tank so that the refrigerant pipes connected in parallel with the second evaporator are embedded in the refrigerating chamber.

On the other hand, the warm room and the hot water tank may be configured in another embodiment of the present invention by using a more effective thermal efficiency by configuring in series with the first and second condensers.

A refrigerant pipe is arranged in parallel between the first condenser and the second condenser, that is, at the inlet side and the outlet side of the second condenser, and the three-way valve is located at an intersection point branched from the second condenser inlet side to the inlet side of the hot water tank. It is configured so that the refrigerant flowing through the refrigerant pipe through the first condenser simultaneously supplies the refrigerant through the refrigerant pipe inlet side of the hot water tank and the inlet side refrigerant pipe of the second condenser.

In addition, a three-way solenoid valve is used at the intersection where the refrigerant pipe extending from the dryer outlet side, the first evaporator inlet refrigerant pipe, and the inlet side of the bypass refrigerant pipe cross each other. By opening and closing the refrigerant passage so that the refrigerant flows selectively through the tube and the refrigerant pipe on the first evaporator side, the valve operation is configured to prevent the cold water tank side evaporator from being overcharged.

The water supply circuit includes a water replenishment tank → a pressure pump → a water purifier (or a water dispenser), and includes a water recirculation path from the water purifier to the cold water tank and the hot water tank, and sends the water in the water replenishment tank to the water purifier by a pressure pump. After the filtration is made is preferably configured to be supplied to the cold water tank and the hot water tank.

In addition, the water supply circuit is preferably carried out in the form of a general water purifier and a water dispenser to be used by attaching a water tank on the main body with cold and hot water.

The hot water tank is attached to a heater to control the amount of current to control the temperature of the water, it is preferable that the water purifier and the bottled water using a built-in replaceable filtration filter.

With reference to the accompanying drawings, a cold / hot water machine and a cold / cold storage using a refrigerating cycle according to the present invention will be understood by the embodiments described in detail below.

Briefly, the accompanying drawings, Figure 1 is a system configuration diagram of a conventional cold water heater and cold storage, Figure 2 is a perspective view of a cold water heater and cold storage using a refrigeration cycle according to the present invention, Figure 3 is a refrigeration cycle according to the present invention Figure 4a and 4b is a view showing the system of the three-way valve according to the present invention, Figure 5 is a hot water tank with a heater according to the present invention. 6 is a perspective view of a temperature control flowchart of a cold / hot water dispenser and a cold storage cabinet using a refrigerating cycle according to the present invention.

2 to 3, an embodiment of the present invention will be described in more detail. A heating chamber 16 is installed at an upper end of a main body 8, and a refrigerating chamber 44 is installed at a lower end of a main body 8. And a cold / hot water machine provided with the hot water field 22a and the cold water field 22b between the warm room room 16 and the refrigerating room 44.

In addition, a cold and hot water machine may be installed at the upper end of the main body 8, and a refrigerator and a warmer may be installed at the lower end.

The main body 8 is integrally provided with a refillable water replenishment tank 48, and the first condenser 14 and the second condenser 20 are connected in series between the compressor 10 and the expander 24, The refrigerant pipe is extended in parallel with each of the condensers 12 and 14 to form a heating chamber 16 and a hot water tank 22, but the first refrigerant pipe 15 is extended in parallel with the first condenser 14. ) Is installed inside the warm room chamber (16), and the second refrigerant pipe (21) extending in parallel with the second condenser (20) is a hot water tank.

(22) It is installed on the outside, and the expander 24 and the dryer 26 are installed in series at the rear end of the second condenser 20.

The first evaporator 32 and the second evaporator between the dryer 26 and the compressor 10.

The 42 is connected in series and forms a cold water tank 34 and a refrigerating chamber 44 in parallel with the respective evaporators 32 and 42, and extends in parallel with the first evaporator 32. The third refrigerant pipe 33 is installed on the outer surface of the cold water tank 34 in parallel with the second refrigerant vapor evaporator 42 and the fourth refrigerant pipe 43 is installed on one side of the inside of the refrigerating chamber 44 in parallel. do.

The compressor 10 compresses the refrigerant at high temperature and high pressure, and the temperature is in the range of about 163 to 169 ° C., and the first condenser removes heat from the refrigerant compressed at high temperature and high pressure from the compressor 10. At this time, since the temperature is lower than the refrigerant temperature of the compressor, the first refrigerant pipe 15 and the surrounding air and the cooling fan 9 arranged in parallel in a coil shape branched with the first condenser 14 are introduced. The heat cooled by mutual heat exchange with air enters the warming room 16. Alternatively, the heating chamber may be heated without using the fan 9 by direct heat.

In addition, the hot water tank 22 is disposed in parallel with the second condenser 20, the hot water tank 22

The inside of the c) is formed by installing a second refrigerant pipe 21 in a coil shape, and the heat transfer heater 15 is mounted inside the hot water tank 22.

Therefore, the water in the hot water tank 22 is preheated first by the heat exchange action of the second refrigerant pipe 21 formed in the coil shape in the hot water tank 22, and the water in the hot water tank 22 arranged as described above is The hot water temperature is maintained at approximately 87 ° C. ± 5 ° C. by the heating of the heat transfer heater 15.

Referring to Figures 4a and 4b, a general three-way valve is a three-way valve for a refrigeration cycle that can be installed more easily by refrigeration cycle is configured to control the supply of refrigerant to the heat exchangers arranged in parallel or selectively.

The first three-way valve 18 is configured to supply and control the refrigerant in both directions at the same time, the first flow path (18a) of the first three-way valve 18 is the refrigerant flows into the three-way valve (18) As the input direction, the refrigerant pipe 12 extending from the outlet side of the first condenser 14 is connected, and the second flow passage 18b is connected to the refrigerant pipe 12 extending from the outlet side of the first condenser 14. A flow path at the inlet end of the second condenser 20 configured to introduce the refrigerant flowing through the second condenser 20 into the third condenser 20, and is formed inside the hot water tank 16 in the third flow path 18c. The tube 12 branches off.

Therefore, the refrigerant flowing in the direction of the first flow path 18a of the first three-way valve 18 simultaneously

The refrigerant flows by branching in the second flow path 18b direction and the third flow path direction 18c.

On the other hand, the second three-way solenoid valve 28 and the third three-way solenoid valve 38 is configured to selectively supply and control the refrigerant in accordance with the signal of the first temperature control unit 36 and the second temperature control unit 46 As a three-way valve for a refrigeration cycle, the third three-way solenoid valve 38 is the same as the control operation of the second three-way solenoid valve 28 will be omitted below.

The second three-way solenoid valve 28 flows the refrigerant in the fifth flow path 28b direction and the sixth flow path 28c direction in which the refrigerant flowing into the fourth flow path 38a cross-connects. The fourth flow path 38a is connected to the refrigerant pipe 12 extending from the outlet side of the dryer 26 to form an input end of the second three-way solenoid valve 28. The fifth flow path 28b of the second three-way solenoid valve 28 is connected with a bypass refrigerant pipe 40 for bypassing the refrigerant when the sixth flow path 28c is blocked. The sixth flow path 28c is configured to block the refrigerant flow path to the first evaporator 32 when the first evaporator 32 is overcharged and becomes a temperature lower than the allowable temperature range during temperature control. will be.

The control operation of the temperature control unit according to the present invention with reference to Figures 2 to 5 in more detail as follows.

The first temperature control unit 36 is configured to control the temperature of the cold water tank 34 disposed in parallel with the first evaporator 32, and is installed at the rear end of the first evaporator 32 and the second evaporator 42. The second temperature control unit 46 is configured to adjust the temperature of the refrigerating chamber 44 arranged in parallel.

Since the temperature control of the first temperature control unit 36 and the second temperature control unit 46 is performed in the same manner, a description of the temperature control method of the refrigerating chamber 44 will be omitted below.

The first temperature control unit 36 is for controlling the temperature of the cold water tank 34. When the user sets a temperature ST (setting temperature) of a desired allowable range, the first temperature control unit 36 is attached to the cold water tank 34. The temperature measured by the temperature sensor PT (Present Temperature) is compared by the temperature control unit, and if it is outside the range of ST set by the user, the bypass side of the second three-way solenoid valve 28 By opening and closing the flow path 28b and the cold water tank 34 side flow path 28c, the temperature of the cold water is maintained at a predetermined temperature within a tolerance desired by the user.

The refrigerant cooled by the heat exchange action with the ambient air in the first evaporator 32 is sufficient to cool the water in the cooling tank 34, but since the temperature control of the water within the minute allowable range desired by the user is impossible, the temperature below the desired cold water temperature is desired. When the temperature of the water decreases, the bypass flow path 28c is opened to flow the refrigerant into the bypass coolant pipe 30, and the sixth flow path 28c on the cold water tank 34 side is closed. The temperature of the cold water is controlled so that the temperature of the cold water is not lower than the allowable temperature.

On the other hand, in the case of the hot water tank 22, the bypass-side flow path is opened (open) and the hot water tank side flow path is closed (close), so that the water temperature of the hot water tank 22 is kept constant, the user wants a tolerance When a temperature range outside the desired temperature, that is, a temperature higher than the desired water temperature is detected by the temperature sensor, temperature control is performed in the temperature controllers 36 and 46, and the bypass side is operated in the same manner as in the case of the temperature control of the cold water tank 22. By opening the flow path and blocking the flow path of the hot water tank 22 side, it is also possible to configure the user to maintain a constant temperature within the desired tolerance range.

Therefore, in the case of the hot water tank 22, it is preferable to configure the temperature control unit such as the cold water tank 32 to control the temperature in the same manner as the above method when the temperature becomes higher or lower than the allowable range of the temperature set by the user.

Hereinafter, the temperature control of the warmer and the refrigerator can be carried out in the same manner as the temperature control method of the cold water tank will be omitted.

Although the embodiments of the present invention have been described in detail as above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to the embodiment of the present invention.

As can be seen from the above description, according to the present invention, a refrigerator and a cold water heater, as well as a refrigerator and a water heater are integrated into a single device, and the refrigerator compartment and the warm room are separately disposed so as to be suitable for large restaurants and other service outlets. And there is an excellent effect that can be used in parallel with the cold room and the heating room in accordance with the desired conditions of the service store.

In addition, it is possible to maximize the thermal efficiency by using the heat energy according to the heat exchange action of the refrigerant circulation refrigeration cycle, and to maximize the cooling performance and heating performance in a short time.

In addition, by configuring the cold and hot water, the refrigerator, and the heating cabinet as an integrated unit, the system and the space occupied in the indoor space can be minimized, and the power consumption can be reduced as much as possible.

Claims (5)

A compressor for compressing the refrigerant to high temperature and high pressure; A first condensation unit for discharging some of the high temperature refrigerant discharged from the compressor into a warm room and dissipating the remaining refrigerant first; A part of the refrigerant discharged from the first condenser to circulate the inside of the hot water tank to preheat the hot water tank firstly and to condense the remaining refrigerant secondly; An expander configured to expand the refrigerant discharged from the second condensation unit; Some of the refrigerant discharged from the expander to circulate the inside of the cold water tank to cool the water in the cold water tank and the first evaporator to evaporate the remaining refrigerant first; And Part of the refrigerant discharged from the first evaporator is a second evaporator for cooling the air in the refrigerating chamber and the second refrigerant evaporates the second refrigerant evaporated in the refrigerating chamber; The method of claim 1, wherein the first condensation unit A first condenser for condensing some of the refrigerant discharged from the compressor to primary; and And a first coolant pipe connected to the first condenser in parallel to allow the remaining refrigerant from the compressor to be introduced into the warming chamber. 2. 3. The method of claim 2, wherein a part of the refrigerant discharged from the outlet of the first condenser is introduced into a second refrigerant pipe installed inside the hot water tank at the front end of the second condenser, and the remaining refrigerant is simultaneously supplied to the second condenser. A cold water heater and a cold storage cabinet using a refrigeration cycle further comprising; a first three-way valve in which a flow path is formed to be supplied. The method of claim 1, wherein the second condensation unit; a second condenser for condensing some of the refrigerant discharged from the first condensation unit; and And a second coolant pipe connected in parallel with the second condenser, the second refrigerant pipe being installed so that the remaining refrigerant from the first condenser is circulated in the hot water tank. The first cold water tank of claim 1, wherein the cold water tank operates a second three-way solenoid valve installed at a front end of the first evaporator to flow the refrigerant to the first bypass refrigerant pipe at a temperature outside the set tolerance range. A second temperature control unit configured to operate a third three-way solenoid valve provided at a front end of the second evaporator so that the refrigerant flows to the second bypass refrigerant pipe at a temperature outside the set tolerance range. Cold and hot water machine and cold storage using a refrigeration cycle comprising a.