KR20120117527A - Cooling, heating and hot watet supply system - Google Patents

Abstract

PURPOSE: A cooling system with cooling, heating, and hot water supply functions is provided to prevent environmental pollution, and to reduce maintenance costs. CONSTITUTION: A cooling system with cooling, heating, and hot water supply functions comprises a compressor(101), a first condenser(102), a second condenser(103), a heat exchanger(104), an expansion valve(105), an evaporator(106), and a four way valve(107). The compressor compresses vaporized refrigerants at high temperature and pressure. The first and second condensers are supplied with the compressed refrigerants. The first and second condensers make the heat of the vaporized refrigerants liquid using a water source or the air. The heat exchanger exchanges the heat with the refrigerants condensed in the first and second condensers. The expansion valve decompresses liquefied refrigerants. The evaporator converts the refrigerants into a liquid stat by heat exchanging with a water source. The four way valve selectively supplies the refrigerants from the first condenser to the second condenser.

Description

Refrigeration system with cooling, heating and hot water function {COOLING, HEATING AND HOT WATET SUPPLY SYSTEM}

The present invention relates to a refrigeration system having a cooling, heating, and hot water supply function. More specifically, using a single refrigeration system, heating and hot water can be used in a low winter outside temperature, and cooling and hot water can be used in a summer outside when the outside temperature is high. This relates to the provision of a possible refrigeration system.

In order to perform commonly used cooling and heating, an independent cooling system and a heating system are constructed, and when used, independent cooling and heating systems are operated.

Looking at the configuration of the general cooling device and the heating device as described above with reference to Figures 3 and 4.

First, the air conditioner (1) is composed of a cooling zone (2) and the air conditioner (3), the air conditioner (3) is composed of a compressor (4), a condenser (5), expansion valve (6) and evaporator (7) Incidentally, it may also include a cooling tower (8).

The air conditioner 3 is cooled in the process of absorbing the surrounding heat while the refrigerant evaporates in the evaporator 7, and the heat absorbed through the evaporator 7 is compressed through the compressor 4, thereby maintaining high temperature and high pressure. The gas of high temperature and high pressure is condensed through the condenser 5, and heat generated through the condenser 5 is discharged to the outside through the cooling tower 8.

The heating device 10 includes a boiler 11 and a hot water tank 12, and a hot water supply pipe 14 for supplying hot water to the heating zone 13 to perform heating by the hot water tank 12, and a heating zone. By circulating (13), the heat exchange is performed, and the hot water recovery pipe 15 which recovers to reheat the cooled hot water is connected.

The boiler 11 includes a combustion chamber 16, and the combustion chamber 16 includes a heat exchanger 18 for receiving heat from a heat source 17 such as a burner or a heater to heat cold water to hot water. do.

In the prior art as described above, since the air conditioner and the heating device are independently provided, there are differences in degree depending on the season and the change in temperature, but there is a case where the heating device must be operated even in the summer when the outside temperature is high, and in the winter season, There is a case where the device needs to be operated.

In particular, industrial sites, hospitals, hotels, and catering businesses, except general households, operate air conditioning and heating at the same time regardless of season to perform cooling and heating in the required place.

For example, in order to store food, store materials that are easily deteriorated when exposed to room temperature or high temperature, the air conditioner should be operated regardless of the season.In addition to indoor heating, regular water is provided for the elderly and patients as well as general showers. A situation must arise.

As such, when the air conditioners and the heaters are separately installed, a number of problems arise, such as a heavy burden on the users due to the double burden and a considerable cost in maintenance.

Accordingly, the present invention has been invented to achieve the above object, a compressor for compressing a low-pressure gasified refrigerant to be liquefied even at room temperature, and a first condenser and a second condenser receiving the refrigerant compressed by the compressor Heat exchanger condensed by a medium circulated independently of each other in the condenser, and the heat condenser refrigerant is condensed in the first and second condensers, and a means for overheating the evaporated refrigerant, and the liquefied refrigerant is easy to evaporate. An expansion valve for reducing the pressure to a low-temperature, low-pressure parasitic state, an evaporator for converting the refrigerant into a liquefied state through evaporation with heat or medium, and supplying the refrigerant of the first condenser to the second condenser. Four-way valve for selecting whether to supply to the circulation to the compressor again, the compressor, the first condenser, four-way valve, the second Performs heating and hot water mode by circulating the accumulator, internal heat exchanger, expansion valve, evaporator, four-way valve and compressor, compressor, first condenser, four-way valve, evaporator, expansion valve, second condenser, four-way valve and compressor By performing the cooling and hot water mode by circulating the system, it is possible to use cooling, heating and hot water using a single device, while using new and renewable energy to prevent environmental pollution, increase energy efficiency, and reduce installation and maintenance costs. It has the characteristics to be able.

The present invention can be used not only cooling and heating using a single refrigeration system, but also hot water supply, by using a natural refrigerant that does not emit carbon dioxide as a refrigerant used in the refrigeration system, while preventing air and environmental pollution, It is an invention having various effects such as cooling and heating can be performed, and installation cost and maintenance cost can be low, and economic cost burden can be reduced throughout the home or industry.

1 is a configuration diagram showing a refrigeration system having a cooling, heating and hot water supply function to which the technique of the present invention is applied, and a heating and hot water generating state diagram.
Figure 2 is a configuration diagram showing a refrigeration system having a cooling, heating and hot water supply function to which the technique of the present invention is applied, the state of cooling and hot water generation.
Figure 3 is a block diagram showing a heating system to which the prior art is applied.
Figure 4 is a block diagram showing a cooling system to which the prior art is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram showing a refrigeration system having a cooling, heating and hot water supply function to which the technique of the present invention is applied, and a heating and hot water generating state diagram, FIG. 2 is a refrigeration having a cooling, heating and hot water supply function to which the technique of the present invention is applied. The configuration diagram showing the system will be described together with the cooling and hot water generating state diagram.

The refrigeration system 100 having a cooling and heating function to which the technology of the present invention is applied includes a compressor 101, a first condenser 102, a second condenser 103, an internal internal heat exchanger 104, and an expansion valve 105. ), An evaporator 106 and a four-way valve 107.

The compressor 101 is driven by a drive means to compress the low-pressure gasified refrigerant to high temperature and high pressure, and the first and second condensers 102 and 103 are supplied with the refrigerant compressed by the compressor 101 to In the process of releasing heat to the atmosphere to make a liquefied state by heat exchange through the water supply 110 and the drain 111 to obtain the heating water, cooling water and hot water.

The internal heat exchanger (104) provides a means for overheating the evaporated refrigerant while allowing the refrigerant condensed in the first and second condensers (102, 103) to heat exchange, and the expansion valve (105) evaporates the liquefied refrigerant. In order to reduce the pressure to a parasitic state of easy low temperature and low pressure, the evaporator 106 converts the refrigerant into a liquefied state through evaporation through heat exchange with external air or circulated water.

The four-way valve 107 selects whether to supply the refrigerant of the first condenser 102 to the second condenser 103 or the first condenser 102 to the evaporator 106.

Of course, the compressor 101 and the evaporator 106 have an air sensor 112 in the case of air cooling or a water temperature sensor 113 in the case of water cooling, and between the four-way valve 107 and the internal internal heat exchanger 104. It is natural to have a check valve 114 or a solenoid valve 115 for determining the circulation direction through the flow and interruption of the refrigerant between the internal internal heat exchanger 104 and the expansion valve 105.

The refrigerant used in the refrigerating system 100 of the present invention may use various kinds of refrigerants, but it would be preferable to use carbon dioxide, which is a natural refrigerant, because it does not cause pollution.

In the refrigerating system 100 configured as described above, the refrigerant compressed and discharged by the compressor 101 is primarily heat exchanged through the first condenser 102.

The refrigerant that has undergone heat exchange in the first condenser 102 is moved to the second condenser 103 by the four-way valve 107 and is sufficiently condensed through heat exchange again and then supplied to the internal heat exchanger 104.

The refrigerant supplied to the internal heat exchanger 104 undergoes heat exchange with the vaporized refrigerant gas supplied from the evaporator 106 to the internal heat exchanger 104, and then moves to the expansion valve 105, whereby the refrigerant is transferred from the evaporator 106. It expands into a low-temperature, low-pressure gas that is easy to evaporate.

The refrigerant expanded in the expansion valve 105 is moved to the evaporator 106 and evaporated and then converted to an overheated state again via the internal heat exchanger 104, and the refrigerant in the overheated state is transferred through the four-way valve 107. The cycle supplied to the compressor 101 is repeated.

In the process of repeating the cycle as described above, in the process of the heat exchange of the refrigerant through the first condenser 102 and the second condenser 103, the heat of the refrigerant is absorbed by the water supply 110, and a predetermined time at the time of drainage 111 Since the temperature rises, it can be used as heating water and hot water.

When operating in the cooling mode, the refrigerant compressed and discharged from the compressor 101 is first condensed by heat exchange through the first condenser 102, and the condensed refrigerant is evaporated by the four-way valve 107. 106) to condense.

The refrigerant supplied to the evaporator 106 is supplied to the second condenser 103 through the expansion valve 105 and evaporated to repeat the cycle of supplying the refrigerant to the compressor 101 again through the four-way valve 107. do.

When operating in the cooling mode as described above, during the heat exchange of the refrigerant through the first condenser 101, the heat of the refrigerant is absorbed by the water supply 110, and during the drainage 111, the temperature rises to a predetermined temperature. It can be used as.

In addition, the cooling water may be utilized as cooling water because the cooling water is lowered to a predetermined temperature during the water supply 110 and the drain 111 during the evaporation of the refrigerant in the second condenser 103.

In the heating mode operation, the solenoid valve between the second condenser 103 and the internal heat exchanger 104 is opened, and the check valve and the evaporator 106 and the internal heat between the internal heat exchanger 104 and the expansion valve 105 are opened. The solenoid valve between the exchanger 104 and the check valve between the internal heat exchanger 104 and the four-way valve 107 are in an open state.

In the cooling mode operation, the solenoid valve between the four-way valve 107 and the evaporator 106 and the check valve between the bulge valve 105 and the second condenser 103 are in an open state. Is in the closed state.

When operating in the heating mode and the cooling mode as described above, the outside air temperature (T1), the evaporator 106 and the internal heat exchanger 104 detected by the outside air sensor 112 or the water temperature sensor 113 provided in the evaporator 106. The refrigerant state passed through is grasped to determine the pressure value detected at the suction side of the compressor 101 and the compressor suction side refrigerant temperature T2 corresponding to the detected pressure value, the saturation pressure and the saturation refrigerant temperature corresponding to the saturation pressure of each refrigerant. When (T3)

When the saturation refrigerant temperature (T3) ≥ the refrigerant temperature (T2) of the compressor suction side, or saturation refrigerant temperature (T3) ≥ the outside temperature (T1), the first condenser 102 in the compressor 101 in the controller (not shown) By opening the solenoid valve installed between the refrigerant line supplied to the evaporator 106 and the high temperature and high pressure refrigerant flows into the evaporator discharge side to perform a function of defrosting the frozen state generated in the evaporator 106, At 106, the refrigerant not vaporized by freezing is vaporized to be sucked into the compressor 101.

As another example, it is possible to increase the durability and efficiency of the compressor 101 by having a heater in the internal heat exchanger 104 to supply power.

In the above process, the controller controls the saturated refrigerant temperature (T3) corresponding to the saturation pressure and the saturation pressure of each refrigerant and the refrigerant temperature (T2) at the suction side of the compressor so that the superheat degree is 5? It would be natural to make it 10 degrees.

The present invention as described above has the advantage of being able to perform cooling and heating using a refrigeration system, as well as supply of hot water supply, while improving the efficiency while reducing installation costs and maintenance costs.

100; Refrigeration system
101; compressor
102; First condenser
103; Second condenser
104; Internal heat exchanger
105; Expansion valve
106; evaporator
107; 4-way valve

Claims (6)

A compressor (101) for compressing the refrigerant introduced from the evaporator to liquefy the low-pressure gasified refrigerant at high temperature and high pressure at room temperature;
A first condenser (102) and a second condenser (103) for supplying the refrigerant compressed by the compressor (101) to make the heat of the gasified refrigerant into a liquefied state by using an external air or a heat source;
An internal heat exchanger (104) for providing means for overheating the evaporated refrigerant while allowing the refrigerant condensed in the first and second condensers (102, 103) to exchange heat;
An expansion valve 105 for reducing the liquefied refrigerant into a parasitic state of low temperature and low pressure, which is easy to evaporate;
An evaporator 106 for converting the refrigerant into a liquefied state through evaporation through heat exchange with an external air or a heat source;
The four-way valve 107 selects whether to supply the refrigerant of the first condenser 102 to the second condenser 103 or to supply the refrigerant from the first condenser 102 to the evaporator 106 to circulate to the evaporator 106. Including;
The refrigerant compressed and discharged by the compressor 101 is primarily heat exchanged through the first condenser 102;
The refrigerant that has undergone heat exchange in the first condenser 102 is moved to the second condenser 103 by the four-way valve 107 to sufficiently condense through heat exchange again;
The refrigerant condensed in the second condenser (103) is supplied to the internal heat exchanger (104) and performs heat exchange with the refrigerant gas in an evaporated state supplied from the evaporator (106) to the internal heat exchanger (104);
The refrigerant via the internal heat exchanger (104) moves to the expansion valve (105) to expand to a low temperature low pressure gas state where the refrigerant is easy to evaporate;
The refrigerant expanded in the expansion valve (105) is moved to the evaporator (106) and evaporated and then converted to an overheated state again via the internal heat exchanger (104);
Refrigeration system having a cooling, heating and hot water supply function, characterized in that the superheated refrigerant performs a heating mode by repeating the cycle supplied to the compressor (101) through the four-way valve (107). A compressor 101 for compressing the refrigerant introduced from the evaporator 106 at a high temperature and high pressure;
A first condenser (102) and a second condenser (103) for supplying the refrigerant compressed by the compressor (101) to make the heat of the gasified refrigerant into a liquefied state by using an external air or a heat source;
An internal heat exchanger (104) for providing means for overheating the evaporated refrigerant while allowing the refrigerant condensed in the first and second condensers (102, 103) to exchange heat;
An expansion valve 105 for reducing the liquefied refrigerant into a parasitic state of low temperature and low pressure, which is easy to evaporate;
An evaporator 106 for converting the refrigerant into a liquefied state through evaporation through heat exchange with an external air or a heat source;
Four-way valve 107 selects whether to supply the refrigerant of the first condenser 102 to the second condenser 103 or to supply the refrigerant from the first condenser 102 to the evaporator 106 and circulate back to the compressor 101. It includes;
The refrigerant compressed and discharged by the compressor 101 is primarily heat exchanged through the first condenser 102;
The refrigerant heat-exchanged in the first condenser 102 is supplied to the evaporator 106 by the four-way valve 107 to perform condensation;
The refrigerant condensed by the evaporator (106) expands through the expansion valve (105) to a low temperature low pressure gas state where the refrigerant is easy to evaporate;
The expanded refrigerant is supplied to the second condenser 103 and evaporated after cooling, heating, and characterized in that the cooling mode is repeated by repeating the cycle supplied to the compressor 101 through the four-way valve 107 again. Refrigeration system with hot water supply function. The method of claim 1, further comprising:
In the heating mode, when the refrigerant is heat-exchanged through the first condenser 102 and the second condenser 103, the state of the refrigerant is absorbed by the water supply 110 and rises to a predetermined temperature during the drainage 111. Therefore, the refrigeration system having a cooling, heating and hot water supply, characterized in that to obtain the heating water and hot water at the same time. 3. The method of claim 2,
In the cooling mode, in the process of exchanging the refrigerant through the first condenser 101, the water of the refrigerant is absorbed by the water supply 110, and the water is raised to a predetermined temperature at the time of drainage 111, thereby obtaining a hot water supply water;
In the process of evaporating the refrigerant in the second condenser 103 has a cooling, heating and hot water supply, characterized in that to obtain a cooling water because the state is lowered to a predetermined temperature during the water supply 110 and the drain 111 Refrigeration system. The method according to claim 1 or 2,
The outside air temperature T1 detected by the outside air sensor 112 or the water temperature sensor 113 provided in the evaporator 106 when the heating mode and the cooling mode are operated.
Refrigerant temperature T2 of the compressor suction side corresponding to the detected pressure value and the detected pressure value by grasping the refrigerant state passing through the evaporator 106 and the internal heat exchanger 104,
When the saturated refrigerant temperature (T3) corresponding to the saturation pressure and saturation pressure of each refrigerant,
When the saturated refrigerant temperature T3 ≥ the refrigerant temperature T2 at the compressor suction side or the saturated refrigerant temperature T3 ≥ the ambient temperature T1, the controller is supplied with the refrigerant from the compressor 101 to the first condenser 102. Opening a solenoid valve provided between the line and the evaporator 106 to defrost the high temperature and high pressure refrigerant to the evaporator discharge side to defrost the freezing state generated in the evaporator 106;
A refrigeration system having a cooling, heating, and hot water supply function, characterized in that the evaporator (106) vaporizes a refrigerant not vaporized by freezing and sucks it into the compressor (101). The method according to claim 1 or 2,
The first condenser 102 is disposed between the compressor 101 and the four-way valve 107 so that hot water can always be generated in the cooling mode and the heating mode as needed. Refrigeration system with function.

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