KR100914776B1 - Hot and cool watered producing apparatus combined cooling and heating - Google Patents

Abstract

The present invention relates to a cold and hot water production apparatus for both cooling and heating that can produce both cold water or hot water while cooling and heating using the same refrigerant.

The main configuration of the present invention is a compressor for compressing the refrigerant; Four-way valve for switching the refrigerant discharged from the compressor to use for heating or cooling; A first three-way valve for converting the supplied high-temperature high-pressure refrigerant to use for hot water or heating when the four-way valve is switched to heating; It is installed indoors and cools the indoor air by heat-exchanging the low-temperature refrigerant flows with the indoor air, and when the first upper valve is switched to heating, heats the indoor air by heat-exchanging the high-temperature and high-pressure refrigerant with the indoor air. Indoor unit; A first heat exchanger configured to heat-exchange the refrigerant with the high temperature and high pressure when the first three-way valve is switched to hot water; A heat storage tank in which the hot water obtained by heat-exchanging the raw water in the first heat exchanger is stored; An electronic valve that receives the refrigerant passing through the indoor unit or the refrigerant passing through the first heat exchanger, and expands in a wet steam state; And an outdoor unit which is installed outdoors and heats the refrigerant by exchanging the refrigerant expanded in the electronic valve with the outside air during heating, and heats the refrigerant by exchanging the high temperature and high pressure refrigerant introduced therein with the outside air during cooling. An expander configured to expand the refrigerant having passed through the outdoor unit into a wet vapor state at low temperature and low pressure during cooling; A second three-way valve for converting the refrigerant expanded in the electromagnetic valve to be used for cold water or for outdoor use; A second heat exchanger configured to exchange heat between the refrigerant in the wet steam state supplied to the cold water line and the raw water when the second three-way valve is switched to the cold water; Raw water is characterized in that it comprises a cold storage tank in which the cold water obtained in the second heat exchanger is stored.

Description

HOT AND COOL WATERED PRODUCING APPARATUS COMBINED COOLING AND HEATING}

The present invention relates to a cold and hot water production apparatus for combined use of cooling and heating that can produce both cold and hot water while cooling and heating using the same refrigerant. More preferably, the heating or hot water, The present invention relates to a cold and hot water production apparatus for both cooling and heating capable of producing cold water together.

In general, the heat pump unit for both heating and cooling has been mainly equipped with a conventional air conditioner unit and a heater unit for heating. However, recently, a heating and cooling unit is implemented using a heat pump unit that can simultaneously apply cooling and heating. .

Conventional heating and cooling combined heat pump device is a compressor for compressing a low-temperature low-pressure refrigerant to a high-temperature high-pressure gas refrigerant, a four-way valve for switching the cooling and heating, and the high-temperature high-pressure gas discharged through the compressor is a cooling line of the four-way valve Through the heat exchange between the high-temperature high-pressure gas and the air heat source (air, waste heat), the refrigerant temperature drops to medium temperature.The medium-temperature refrigerant makes the wet steam state at low temperature and low pressure through the electronic valve, and the low temperature low pressure refrigerant is the evaporator. Through the heat exchange with the air heat source in a low-temperature low-pressure gas state to realize the indoor cooling.

In addition, the compressor for compressing the low-temperature low-pressure refrigerant to the high-temperature high-pressure gas refrigerant, the four-way valve for cooling and heating conversion, and the high-temperature high-pressure gas discharged through the compressor to the heating line of the four-way valve It flows to the condensation unit through the heat exchange between the high temperature and high pressure gas and the air heat source (air, waste heat) to realize the indoor heating.The heat exchanged medium temperature refrigerant creates a wet steam state of low temperature and low pressure through the electronic valve. The evaporator is sucked into the compressor in a low-temperature, low-pressure gas state.

Conventional heating and cooling combined heat pump device as described above is a device that can be applied to the cooling or heating at the same time through the change of direction by electronically controlling the indoor cooling and heating.

However, the conventional air-heating and combined heat pump apparatus cannot implement a device for simultaneously producing high temperature water (cold water) while using cooling or heating, and has been implemented as a device for producing hot water alone or as a combined heating and cooling apparatus in the form of a heat pump.

Therefore, to date, there is no high temperature water (cold water) production unit for both air conditioning and heating using a single device, and there is a troublesome problem of separately installing a boiler type device for producing a separate air conditioning unit and hot water.

It is an object of the present invention to provide a cooling and heating combined cold and hot water production apparatus that can produce both cold and hot water while cooling and heating the refrigerant as a heat source.

It is another object of the present invention to provide a cold and hot water production apparatus for both heating and cooling that can stably maintain heating during the time of eliminating the frost by bypassing the refrigerant flowing into the outdoor unit when frost occurs in the outdoor unit when the outdoor air temperature falls to low temperature in winter It is.

Still another object of the present invention is to provide an air conditioning and hot and cold water production apparatus capable of removing air bubbles or impurities included in the refrigerant to prevent damage to the compressor due to the mixed refrigerant thereof.

In accordance with one aspect of the present invention, there is provided a cold / hot water production apparatus for both heating and cooling, comprising: a compressor for compressing a low temperature low pressure refrigerant into a high temperature high pressure gas refrigerant; A four-way valve which converts the refrigerant discharged from the compressor to use for heating or cooling, and provides the used refrigerant to the compressor; A first three-way valve for converting the supplied high-temperature high-pressure refrigerant to use for hot water or heating when the four-way valve is switched to heating; It is installed indoors and cools the indoor air by heat-exchanging the low-temperature refrigerant introduced into the indoor air, and when the first upper valve is converted to heating, the high-temperature, high-pressure refrigerant supplied to the heating line exchanges heat with the indoor air. An indoor unit for heating the indoor air; A first heat exchanger configured to exchange heat between the high temperature and high pressure refrigerant supplied to the hot water line and the raw water when the first three-way valve is switched to hot water; A heat storage tank in which the hot water obtained by heat-exchanging the raw water in the first heat exchanger is stored; An electronic valve receiving the refrigerant passing through the indoor unit or the refrigerant passing through the first heat exchanger, respectively, and expanding the wet steam at a low temperature and low pressure; And an outdoor unit that is installed outdoors and heats the refrigerant by exchanging the refrigerant expanded in the electronic valve with the outside when heating, and heats the refrigerant by exchanging the high temperature and high pressure refrigerant introduced therein with the outside when cooling. An expander configured to expand the refrigerant having passed through the outdoor unit into a wet vapor state at low temperature and low pressure during cooling; A second three-way valve for converting the refrigerant expanded in the electromagnetic valve to be used for cold water or for outdoor use; A second heat exchanger configured to exchange heat between the refrigerant and the raw water supplied to the cold water line when the second three-way valve is converted to cold water; The raw water is characterized in that it comprises a cold storage tank for storing the cold water obtained in the second heat exchanger.

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Preferably, the first temperature sensor for measuring the temperature of the refrigerant discharged from the compressor; When the temperature measured by the first temperature sensor is higher than the reference temperature, characterized in that it comprises a bypass valve for supplying a low-temperature refrigerant passing through the electromagnetic valve to the compressor along the bypass line.

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Preferably, the outdoor unit is a second temperature sensor for checking the temperature of the outdoor unit is located, the second three-way valve is set for the cold water when the temperature of the outdoor unit checked in the second temperature sensor is less than the reference temperature. It is done.

Combined cooling and hot water production apparatus according to the present invention can produce the cold water or hot water at the same time while cooling and heating using the same refrigerant can replace each equipment, can reduce the energy consumed in the operation of the two devices There is an advantage.

In addition, one device may produce heating or hot water respectively, or may produce heating, hot water and cold water together.

In addition, it is possible to remove the bubbles or impurities contained in the refrigerant to prevent damage to the compressor due to their mixed refrigerant.

In addition, when the outside air temperature in the winter falls to a low temperature, if the frost occurs in the outdoor unit portion, since the refrigerant does not flow into the outdoor unit, it is possible to maintain a stable heating even during the time of elimination of frost.

1 is a schematic diagram of a cooling and heating combined hot and cold water production apparatus according to the present invention.

Figure 2 is a schematic diagram of the hot water production process according to the present invention.

3 is a schematic diagram of a heating process according to the present invention;

4 is a schematic diagram of a cold water production process according to the present invention.

5 is a schematic diagram of a cooling process according to the present invention.

6 is a schematic diagram of a bypass process in accordance with the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the cooling and hot water production apparatus for combined heating and cooling of the present invention.

1 is a schematic diagram of a combined cold and hot water production apparatus according to the present invention, Figure 2 is a schematic diagram of the hot water production process according to the present invention, Figure 3 is a schematic diagram of the heating process according to the present invention, Figure 4 is according to the present invention 5 is a schematic diagram of a cold water production process, FIG. 5 is a schematic diagram of a cooling process according to the present invention, and FIG. 6 is a schematic diagram of a bypass process according to the present invention.

As shown in FIG. 1, the apparatus for producing both cold and hot water according to the present invention includes a compressor 10 for compressing a low-temperature low-pressure refrigerant into a high-temperature, high-pressure gaseous refrigerant, and a refrigerant discharged from the compressor for heating or cooling. Four-way valve 15 for switching to use, providing the used refrigerant to the compressor, and the first three-way valve 20 for switching the supplied high-temperature and high-pressure refrigerant for use for hot water or heating when the four-way valve is switched to heating And, it is installed in the room and when cooling the indoor air by heat-exchanging the low-temperature refrigerant introduced into the indoor air, and when the first three-way valve 20 is switched to heating, the high-temperature high-pressure refrigerant supplied to the heating line indoors When the indoor unit 25 and the first three-way valve 20 for heating the indoor air by heat-exchanging with air are converted to hot water, the high-temperature, high-pressure refrigerant supplied to the hot water line and the raw water are exchanged. The heat exchanger 30, the heat storage tank 35 in which the hot water obtained by heat exchange in the first heat exchanger 30 is stored, the refrigerant passing through the indoor unit or the refrigerant passing through the first heat exchanger 30 It is provided in each of the electronic valve 45 to expand in the wet steam state of low temperature and low pressure, and is installed outdoors, and when heated, heat the refrigerant by heat-exchanging the refrigerant expanded in the electronic valve 45 to the outside, and during the cooling An outdoor unit 55 for exchanging the refrigerant with the outside air to release heat in the air, and an expander 40 for expanding the refrigerant passing through the outdoor unit into a wet steam state at low temperature and low pressure during cooling. Therefore, heating or hot water can be produced by mixing or respectively using the refrigerant produced in the compressor.

In addition, the present invention, if the second three-way valve 50 and the second three-way valve 50 for converting the refrigerant in the wet steam state passing through the above-described electromagnetic valve 45 to be used for cold or outdoor use is switched to the cold water , A second heat exchanger 60 for exchanging the refrigerant in the wet steam state supplied to the cold water line and the raw water, and a cold storage tank 65 in which the cold water obtained from the second heat exchanger 60 is stored. At this time, the first and second heat exchangers 30 and 60 have a circulation pump for supplying raw water. Through such a coolant line can produce additional cold water while producing heating or hot water.

On the other hand, the first temperature sensor 80 for measuring the temperature of the refrigerant discharged from the compressor, and when the temperature measured by the first temperature sensor 80 is higher than the reference temperature, the low-temperature refrigerant passing through the electromagnetic valve 45 is A bypass valve 85 is provided to supply the compressor 10 along the pass line.

In addition, between the four-way valve and the compressor, a filter drier 90 for removing foreign matters contained in the refrigerant and a liquid separator 95 for removing bubbles contained in the refrigerant are formed.

At this time, the second three-way valve 50 checks the temperature of the outdoor unit in the second temperature sensor 81 and is set for cold water when the temperature of the outdoor unit is less than the reference temperature. Accordingly, the refrigerant flowing into the outdoor unit flows into the cold water, so that the heating can be stably maintained even during the time of elimination of the idea.

With reference to Figure 2 looks at the hot water production process using a combined cold and hot water production apparatus.

When a refrigerant having a high temperature and high pressure gas is generated in the compressor 10, the refrigerant having a high temperature and high pressure flows into the four-way valve 15. When the four-way valve is switched to hot water and heating, the high temperature and high pressure refrigerant flows into the first three-way valve 20. When the first three-way valve 20 is converted to hot water, the high temperature and high pressure refrigerant is supplied to the first heat exchanger 30 through the hot water line 21.

The first heat exchanger 30 exchanges the introduced high temperature and high pressure refrigerant with raw water at room temperature to convert the raw water into hot water of high temperature, and converts the high temperature refrigerant into a low temperature refrigerant. The high temperature hot water obtained by the first heat exchanger 30 is stored in the heat storage tank 35 and then supplied to the hot water using device (not shown). In this case, the first circulation pump 70 may be used to supply raw water to the first heat exchanger 30.

Thereafter, the low temperature refrigerant passing through the first heat exchanger 30 flows into the electron valve 45 which expands the refrigerant and expands into a low temperature low pressure wet steam having a temperature lower than room temperature.

When the second three-way valve 50 is set for outdoor use, the refrigerant in the wet steam state passing through the electromagnetic valve 45 is heat-exchanged with the air in the outdoor unit 55 to be supplied to the four-way valve 15 as the low-temperature low-pressure refrigerant, or the second three-way valve. If it is set for the cold water in the valve 50 is supplied to the four-way valve 15 as the refrigerant cooled through the second heat exchanger (60). Thereafter, the low temperature low pressure refrigerant introduced into the four-way valve 15 is supplied to the compressor 10 and recycled.

With reference to Figure 3 looks at the heating process using a cold and hot water production apparatus combined with heating and cooling.

When a refrigerant having a high temperature and high pressure gas is generated in the compressor 10, the refrigerant having a high temperature and high pressure flows into the four-way valve 15. When the four-way valve is switched to hot water and heating, the high temperature and high pressure refrigerant flows into the first three-way valve 20. When the first three-way valve 20 is switched for heating, the high temperature and high pressure refrigerant is supplied to the indoor unit 25 through the heating line 22.

The indoor unit heats the room by heat-exchanging the introduced high temperature and high pressure refrigerant with an air heat source (air, waste heat) and converts the high temperature refrigerant into a low temperature refrigerant. The low temperature refrigerant passing through the indoor unit 25 flows into the electron valve 45 which expands the refrigerant and expands into a low temperature and low pressure wet steam having a temperature lower than room temperature.

Meanwhile, when the second three-way valve 50 is set for outdoor use, the wet steam state refrigerant having passed through the electromagnetic valve 45 is heat-exchanged with the air in the outdoor unit 55 to be supplied to the four-way valve 15 as a low temperature and low pressure refrigerant. When the two-way valve 50 is set for cold water, it is supplied to the four-way valve 15 as a refrigerant cooled through the second heat exchanger 60. The low temperature low pressure refrigerant introduced into the four-way valve 15 is supplied to the compressor 10 and recycled. In addition, the second three-way valve 50 is set for cold water when the temperature of the outdoor unit checked by the second temperature sensor installed in the outdoor unit is lower than the reference temperature to remove refrigerant by flowing the refrigerant flowing into the outdoor unit for cold water. It can keep heating stable even during

With reference to Figure 4 looks at the cold water production process using the combined cold and hot water production apparatus.

As described in the hot water production process and the heating process, the low-temperature refrigerant heat-exchanged with the raw water in the first heat exchanger 30 or the low-temperature refrigerant cold-exchanged with the air heat source in the indoor unit 25 is introduced into the electron valve 45 Each expands into a low temperature, low pressure, wet steam having a temperature lower than room temperature.

Thereafter, when the second three-way valve 50 is switched to the cold water, the refrigerant in the low temperature low pressure wet steam state is supplied to the second heat exchanger 60 through the cold water line 51.

The low temperature low pressure refrigerant introduced into the second heat exchanger 60 exchanges heat with the raw water at room temperature to convert the raw water into cold cold water. The cold water of low temperature obtained by the second heat exchanger 60 is stored in the cold storage tank 65 and then supplied to the cold water utilization device (not shown) for use. In this case, a second circulation pump 75 may be used to supply raw water to the second heat exchanger 60.

On the other hand, it is supplied to the four-way valve 15 as a refrigerant cooled through the second heat exchanger 60, and is supplied to the compressor 10 again and recycled.

With reference to Figure 5 looks at the cooling process using the cooling and heating combined cold and hot water production apparatus.

When a refrigerant having a high temperature and high pressure gas is generated in the compressor 10, the refrigerant having a high temperature and high pressure flows into the four-way valve 15. When the four-way valve 15 is switched to cooling, the high temperature and high pressure refrigerant is supplied to the outdoor unit 55.

The outdoor unit 55 heats the introduced high-temperature, high-pressure refrigerant with the outdoor atmosphere to first lower the temperature of the refrigerant. The refrigerant whose temperature is first lowered is expanded and discharged in the wet steam state at low temperature and low pressure while passing through the expander 40.

The refrigerant in the wet state is introduced into the indoor unit 25, and heat exchanges with the atmosphere of the room in the indoor unit 25 to cool the room. The refrigerant heat-exchanged in the indoor unit 25 is supplied to the four-way valve 15 and again supplied to the compressor 10 to be recycled.

On the other hand, as shown in Figure 6, the combined cooling and hot water production apparatus of the present invention the bypass valve when the temperature of the refrigerant measured by the first temperature sensor 80 for measuring the temperature of the refrigerant discharged from the compressor is above the reference temperature 85 may supply a part or all of the low temperature refrigerant passing through the electron valve 45 directly to the compressor 10 along the bypass line 86 to prevent damage to the compressor.

In addition, the filter dryer 90 is installed between the four-way valve 15 and the compressor 10 to remove the foreign matter contained in the refrigerant to be introduced into the compressor. Then, the liquid separator 95 is installed between the four-way valve 15 and the compressor 10 to remove bubbles and the like contained in the refrigerant so that only the liquid refrigerant can flow into the compressor 10.

Claims (7)

delete A compressor for compressing the low temperature low pressure refrigerant into a high temperature high pressure gas refrigerant; A four-way valve which converts the refrigerant discharged from the compressor to use for heating or cooling, and provides the used refrigerant to the compressor; A first three-way valve for converting the supplied high-temperature high-pressure refrigerant to use for hot water or heating when the four-way valve is switched to heating; It is installed indoors and cools the indoor air by heat-exchanging the low-temperature refrigerant introduced into the indoor air, and when the first upper valve is converted to heating, the high-temperature, high-pressure refrigerant supplied to the heating line exchanges heat with the indoor air. An indoor unit for heating the indoor air; A first heat exchanger configured to exchange heat between the high temperature and high pressure refrigerant supplied to the hot water line and the raw water when the first three-way valve is switched to hot water; A heat storage tank in which the hot water obtained by heat-exchanging the raw water in the first heat exchanger is stored; An electronic valve receiving the refrigerant passing through the indoor unit or the refrigerant passing through the first heat exchanger, and expanding the wet steam at a low temperature and low pressure; An outdoor unit which is installed outdoors and heats the refrigerant by exchanging the refrigerant expanded in the electronic valve with the outside air, and heats the refrigerant by cooling the incoming high temperature and high pressure refrigerant with the outdoor air during cooling; An expander configured to expand the refrigerant having passed through the outdoor unit into a wet vapor state at low temperature and low pressure during cooling; A second three-way valve for converting the refrigerant expanded in the electromagnetic valve to be used for cold water or for outdoor use; A second heat exchanger configured to exchange heat between the refrigerant and the raw water supplied to the cold water line when the second three-way valve is converted to cold water; Combined cold and hot water production apparatus, characterized in that the cold water obtained by storing the cold water obtained in the second heat exchanger. delete According to claim 2, A first temperature sensor for measuring the temperature of the refrigerant discharged from the compressor; And a bypass valve for supplying the refrigerant passing through the electromagnetic valve to the compressor along the bypass line when the temperature measured by the temperature sensor is equal to or higher than a reference temperature. delete delete According to claim 2, wherein the outdoor unit is a second temperature sensor for checking the temperature of the outdoor unit is located, the second three-way valve is set for cold water when the temperature of the outdoor unit checked by the second temperature sensor is less than the reference temperature Cooling and heating combined use hot and cold water production apparatus, characterized in that.