JP2016003849A - Combined air-conditioning water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning water heater that utilizes a refrigeration cycle and a refrigerant cycle of a reverse Carnot cycle, and a Carnot cycle in a combined manner.SOLUTION: Unutilized heat energy conventionally discarded by being released into the atmosphere from a condenser to cool a refrigerant from a condenser is utilized by heat exchange for a refrigerant of a second cycle, through the use of a combined cycle comprising a first cycle of a refrigeration cycle of a reverse Carnot cycle and the second cycle of a refrigeration cycle and a power generation cycle of a Carnot cycle.

Description

The present invention uses a combined cycle consisting of a first cycle of a refrigeration cycle of a reverse Carnot cycle and a second cycle of a refrigeration cycle and a power generation cycle of a Carnot cycle to conventionally cool the refrigerant from the condenser to the atmosphere. The unused heat energy that has been released and discarded is utilized by heat exchange with the refrigerant in the second cycle.
In the case of using a refrigeration cycle for the second cycle in cooling hot water supply, first, the hot water supply water is heated by heat exchange with the refrigerant of the first cycle which has been compressed by the compressor of the first cycle and has become high pressure and high temperature. The refrigerant in the first cycle flows into the condenser, cools down by heat exchange with the refrigerant in the second cycle, passes through the expansion valve in the first cycle, becomes low pressure and low temperature, and is cooled by the first indoor heat exchanger. Do. Also, the refrigerant in the second cycle, which has flowed into the condenser and heated by the refrigerant in the first cycle, becomes low pressure and low temperature in the expander in the second cycle through the heat exchanger, and is cooled by the second indoor heat exchanger. The refrigerant pump returns to the condenser. As a result, the cooling capacity of the second indoor heat exchanger utilizing the heat energy previously released into the atmosphere and discarded is added to the cooling capacity of the first indoor heat exchanger, which greatly improves the cooling efficiency. It becomes.
When using a Carnot cycle power generation cycle for the second cycle, in addition to using a refrigeration cycle, power is generated by the driving force of the second cycle refrigerant expander at high temperature and pressure, and the first cycle Assists in driving the compressor and the second cycle refrigerant pump.
In addition, in the case of using a refrigeration cycle for the second cycle in heating hot water supply, the hot water supply water is heated by exchanging heat with the first cycle refrigerant that is first compressed by the compressor in the first cycle and becomes high pressure and high temperature. To do. Thereafter, the refrigerant in the first cycle flows into the first indoor heat exchanger and performs heating. Then, the refrigerant in the first cycle flows into the condenser, cools down by heat exchange with the refrigerant in the second cycle, passes through the expansion valve in the first cycle, becomes low pressure and low temperature, and returns to the compressor in the first cycle.
The second cycle refrigerant heated by the first cycle refrigerant is heated by the second indoor heat exchanger, passes through the heat exchanger, becomes low pressure and low temperature by the second cycle expansion valve, and is sent by the refrigerant pump. Returned to the condenser. As a result, the heating capacity of the second indoor heat exchanger, which uses the heat energy that has been released into the atmosphere and discarded in the past, is added to the heating capacity of the first indoor heat exchanger, which greatly improves the heating efficiency. It becomes.
When using a Carnot cycle power generation cycle for the second cycle, in addition to using a refrigeration cycle, power is generated by the driving force of the second cycle refrigerant expander at high temperature and pressure, and the first cycle Assists in driving the compressor and the second cycle refrigerant pump. The present invention relates to a combined air conditioning and hot water supply apparatus that can significantly reduce the power consumption of the air conditioning and hot water supply apparatus by improving the cooling and heating efficiency and generating power by an expander.
In addition, the exhaust heat emission of this device is extremely small compared to the exhaust heat release from the conventional condenser, so it is very effective for the countermeasures against the heat island phenomenon. The present invention relates to a combined air conditioning and hot water supply apparatus that also enables an integrated air conditioner.

Currently, air-conditioning water heaters based on the reverse Carnot cycle are a powerful trump card for future low-carbon societies because of their high energy efficiency. In addition, the technology of air conditioning and hot water supply equipment in Japan has been steadily developed and has led to the world. In such an environment, further performance improvement of the air conditioning and hot water supply apparatus and effective use of the air conditioning and hot water supply technology are required.

In such an environment, the social significance of the refrigeration cycle and refrigerant cycle of the reverse Carnot cycle and the air-conditioning hot water supply apparatus using the Carnot cycle in a complex and skillful manner cannot be measured.

Patent 4918450 Patent 5441844

The present invention uses a combined cycle consisting of a first cycle of a refrigeration cycle of a reverse Carnot cycle and a second cycle of a refrigeration cycle and a power generation cycle of a Carnot cycle to conventionally cool the refrigerant from the condenser to the atmosphere. The unused heat energy that has been released and discarded is utilized by heat exchange with the refrigerant in the second cycle.
In the case of using a refrigeration cycle for the second cycle in cooling hot water supply, first, the hot water supply water is heated by heat exchange with the refrigerant of the first cycle which has been compressed by the compressor of the first cycle and has become high pressure and high temperature. The refrigerant in the first cycle flows into the condenser, cools down by heat exchange with the refrigerant in the second cycle, passes through the expansion valve in the first cycle, becomes low pressure and low temperature, and is cooled by the first indoor heat exchanger. Do. Also, the refrigerant in the second cycle, which has flowed into the condenser and heated by the refrigerant in the first cycle, becomes low pressure and low temperature in the expander in the second cycle through the heat exchanger, and is cooled by the second indoor heat exchanger. The refrigerant pump returns to the condenser. As a result, the cooling capacity of the second indoor heat exchanger utilizing the heat energy previously released into the atmosphere and discarded is added to the cooling capacity of the first indoor heat exchanger, which greatly improves the cooling efficiency. It becomes.
When using a Carnot cycle power generation cycle for the second cycle, in addition to using a refrigeration cycle, power is generated by the driving force of the second cycle refrigerant expander at high temperature and pressure, and the first cycle Assists in driving the compressor and the second cycle refrigerant pump.
In addition, in the case of using a refrigeration cycle for the second cycle in heating hot water supply, the hot water supply water is heated by exchanging heat with the first cycle refrigerant that is first compressed by the compressor in the first cycle and becomes high pressure and high temperature. To do. Thereafter, the refrigerant in the first cycle flows into the first indoor heat exchanger and performs heating. Then, the refrigerant in the first cycle flows into the condenser, cools down by heat exchange with the refrigerant in the second cycle, passes through the expansion valve in the first cycle, becomes low pressure and low temperature, and returns to the compressor in the first cycle.
The second cycle refrigerant heated by the first cycle refrigerant is heated by the second indoor heat exchanger, passes through the heat exchanger, becomes low pressure and low temperature by the second cycle expansion valve, and is sent by the refrigerant pump. Returned to the condenser. As a result, the heating capacity of the second indoor heat exchanger, which uses the heat energy that has been released into the atmosphere and discarded in the past, is added to the heating capacity of the first indoor heat exchanger, which greatly improves the heating efficiency. It becomes.
When using a Carnot cycle power generation cycle for the second cycle, in addition to using a refrigeration cycle, power is generated by the driving force of the second cycle refrigerant expander at high temperature and pressure, and the first cycle Assists in driving the compressor and the second cycle refrigerant pump. The present invention relates to a combined air conditioning and hot water supply apparatus that can significantly reduce the power consumption of the air conditioning and hot water supply apparatus by improving the cooling and heating efficiency and generating power by an expander.
In addition, the exhaust heat emission of this device is extremely small compared to the exhaust heat release from the conventional condenser, so it is very effective for countermeasures against the heat island phenomenon, and the conventional outdoor heat exchanger is abolished and used indoors. It is a complex air-conditioning hot-water supply device that also enables an integrated air-conditioning device.

Currently, electricity is generated by large-scale power generation facilities, or by private power generation in factories, etc., and individual small-scale power generation in each home, but nuclear power, which is large-scale power generation, is damaged during an accident. There is a problem of the size and construction location of hydropower and renewable energy such as geothermal, solar heat, solar and wind power. In-house power generation at factories also has problems such as CO2 emissions and fuel price fluctuations, and the use of renewable energy such as solar and wind power at each home is both unstable and unstable depending on the climate. It is done. In such a situation, it is necessary to further promote the effective use of energy.

The present invention uses a combined cycle consisting of the first cycle of the reverse Carnot cycle refrigeration cycle and the second cycle of the refrigeration cycle and the Carnot cycle power generation cycle, and is conventionally released from the condenser to the atmosphere only for cooling. Then, unused heat energy that has been discarded is utilized by heat exchange with the refrigerant in the second cycle.
It is a composite air-conditioning hot-water supply apparatus that can improve the overall cooling and heating capacity by skillfully exchanging and using the first-cycle refrigerant and the second-cycle refrigerant. Further, an expander is attached in place of the expansion valve in the second cycle, and electric power is generated using the driving force to assist in driving the compressor in the first cycle and the refrigerant pump in the second cycle.
Thereby, it is a composite air-conditioning hot-water supply apparatus which can reduce the power consumption of an air-conditioning hot-water supply apparatus significantly.
In order to solve the above-mentioned problems, the present invention combines the refrigerant cycles in combination to generate power by utilizing the thermal energy of the atmosphere that has been discarded in the past, and further through the sophisticated heat exchange of the combined cycle, It is a composite air-conditioning hot-water supply device that can greatly reduce the power consumption of the air-conditioning hot-water supply device, and is extremely useful as an effective use of new natural energy.

Since the present invention uses thermal energy of the atmosphere, it is a power-saving and combined air-conditioning hot-water supply device that can be stably operated for 24 hours all year round, and can be installed anywhere, such as each house, large-scale facility, store, etc.
In addition, since the exhaust heat emitted by the condenser is extremely small, it is very effective for the countermeasure against the heat island phenomenon.

Hereinafter, the composite air-conditioning hot-water supply apparatus according to the present invention will be described based on the entire configuration diagram shown in FIGS. 1, 2, 3, and 4.

In the case of cooling and hot water supply in FIG. 1, the compressor 1 in the first cycle is driven by the external driving device 16. The compressed, high-temperature and high-pressure refrigerant flows into the hot water supply heat exchanger 22 through the refrigerant pipe 11, performs heat exchange with the cold water flowing in from the hot water storage tank 26 through the pipe 24 by the hot water supply pump 23, and is discharged. Then, in the condenser 3 through the four-way valve 21, heat exchange is performed with the refrigerant in the second cycle whose pressure is increased by the refrigerant pump 6, and the refrigerant enters the expansion valve 2 from the refrigerant pipe 8 through a liquid receiver (not shown).

In FIG. 1, the refrigerant of the first cycle, which has been expanded by the expansion valve 2 and has become low temperature and low pressure, flows from the refrigerant pipe 9 through the four-way valve 21 and flows into the first indoor heat exchanger 5a for cooling. Then, the refrigerant pipe 10 passes through the heat exchanger 4 and returns to the first cycle compressor 1.

In FIG. 1, the hot water that has flowed into the hot water supply heat exchanger 22 and has been heated returns to the hot water storage tank 26 via the pipe 25.

As shown in FIG. 1, the second-cycle refrigerant whose pressure is increased by the refrigerant pump 6 and raised through the condenser 3 passes through the four-way valve 21 and the refrigerant pipe 15 and exchanges heat with the first-cycle refrigerant in the heat exchanger 4. The refrigerant enters the expansion valve 20 through a liquid receiver (not shown), becomes low temperature and low pressure, flows into the second indoor heat exchanger 5b through the refrigerant pipe 12 and the four-way valve 21, and is cooled. , Passing through the refrigerant pipe 13, being pressurized by the refrigerant pump 6 and returning to the condenser 3.

In the case of cooling and hot water supply in FIG. 2, the compressor 1 in the first cycle is driven by the external driving device 16. The compressed, high-temperature and high-pressure refrigerant flows into the hot water supply heat exchanger 22 through the refrigerant pipe 11, performs heat exchange with the cold water flowing in from the hot water storage tank 26 through the pipe 24 by the hot water supply pump 23, and is discharged. Then, in the condenser 3 through the four-way valve 21, heat exchange is performed with the refrigerant in the second cycle whose pressure is increased by the refrigerant pump 6, and the refrigerant enters the expansion valve 2 from the refrigerant pipe 8 through a liquid receiver (not shown).

In FIG. 2, the refrigerant in the first cycle, which has been expanded by the expansion valve 2 to become low temperature and low pressure, flows from the refrigerant pipe 9 through the four-way valve 21 and flows into the first indoor heat exchanger 5a for cooling. Then, the heat exchanger 4 passes through the refrigerant pipe 10 and returns to the first cycle compressor 1.

In FIG. 2, the hot water that has flowed into the hot water supply heat exchanger 22 and has been heated returns to the hot water storage tank 26 via the pipe 25.

According to FIG. 2, the second cycle refrigerant that has been pressurized by the refrigerant pump 6, passes through the refrigerant pipe 14, and is heated by the first cycle refrigerant in the condenser 3 flows into the expander 7 through the refrigerant pipe 15. To do.

In FIG. 2, the refrigerant that has flowed into the second cycle expander 7 expands, generates a driving force, and drives the two-cycle generator 19 to generate power.

In FIG. 2, the second cycle refrigerant which has been expanded by power generation in the expander 7 and has become low temperature and low pressure passes through the refrigerant pipe 12, and performs heat exchange with the first cycle refrigerant in the heat exchanger 4, and the refrigerant pipe 13. To the refrigerant pump 6.

In the case of heating and hot water supply in FIG. 3, the compressor 1 in the first cycle is driven by the external drive unit 16. The compressed, high-temperature and high-pressure refrigerant flows into the hot water supply heat exchanger 22 through the refrigerant pipe 11, performs heat exchange with the cold water flowing in from the hot water storage tank 26 through the pipe 24 by the hot water supply pump 23, and is discharged. The refrigerant flows into the first indoor heat exchanger 5a through the four-way valve 21 to perform heating, passes through the four-way valve 21, and exchanges heat with the refrigerant in the second cycle sent by the refrigerant pump 6 in the condenser 3. 8 enters the expansion valve 2 through a liquid receiver (not shown).

In FIG. 3, the refrigerant in the first cycle, which is expanded by the expansion valve 2 to become low temperature and low pressure, passes through the refrigerant pipe 9, the four-way valve 21, the refrigerant pipe 10, the heat exchanger 4, and the first cycle compressor. Return to 1.

In FIG. 3, the hot water that has flowed into the hot water supply heat exchanger 22 and has been heated returns to the hot water storage tank 26 via the pipe 25.

According to FIG. 3, the second cycle refrigerant heated through the condenser 3 flows into the second indoor heat exchanger 5 b through the four-way valve 21, the refrigerant pipe 15, and the four-way valve 21 to perform heating. The heat exchanger 4 exchanges heat with the refrigerant in the first cycle through the four-way valve 21, expands by the expansion valve 20, becomes low temperature and low pressure, passes through the refrigerant pipe 12, and passes through the refrigerant pump 6 through the four-way valve 21. Return to condenser 3.

In FIG. 3, the temperature of the second cycle refrigerant is detected by the temperature sensor 17, and the circulation amount of the circulation pump 6 is controlled by the control device 18, so that the second cycle refrigerant is maintained at an appropriate temperature.

In the case of heating and hot water supply in FIG. 4, the compressor 1 in the first cycle is driven by the external drive unit 16. The compressed, high-temperature and high-pressure refrigerant flows into the hot water supply heat exchanger 22 through the refrigerant pipe 11, performs heat exchange with the cold water flowing in from the hot water storage tank 26 through the pipe 24 by the hot water supply pump 23, and is discharged. The refrigerant flows into the first indoor heat exchanger 5a through the four-way valve 21 to perform heating, passes through the four-way valve 21, and exchanges heat with the refrigerant in the second cycle whose pressure is increased by the refrigerant pump 6 in the condenser 3. 8 enters the expansion valve 2 through a liquid receiver (not shown).

In FIG. 4, the refrigerant in the first cycle, which has been expanded by the expansion valve 2 and has become low temperature and low pressure, exchanges heat with the refrigerant in the second cycle in the heat exchanger 4 from the refrigerant pipe 9 and the four-way valve 21. And return to the compressor 1 of the first cycle.

In FIG. 4, the hot water that has flowed into the hot water supply heat exchanger 22 and has been heated returns to the hot water storage tank 26 through the pipe 25.

According to FIG. 4, the refrigerant in the second cycle, which has been heated through the condenser 3, flows into the expander 7 through the refrigerant pipe 15.

In FIG. 4, the refrigerant flowing into the second cycle expander 7 expands, generates a driving force, and drives the two-cycle generator 19 to generate power.

In FIG. 1 and FIG. 3, there is a difference in the cooling / heating capacity of the first indoor heat exchanger 5a and the second indoor heat exchanger 5b. To improve.

Here, a specific operation state of the first cycle of the composite air-conditioning hot-water supply apparatus will be described with reference to a solid Ph (Mollier) diagram in FIG.
Point A in the first cycle of the reverse Carnot cycle indicates the state of the refrigerant supplied to the compressor 1 (for example, a pressure of 0.584 MPa, 10 ° C.), which is compressed by the compressor 1 driven by the drive 16 and is high pressure. At point B (for example, pressure 2.427 MPa, 86 ° C.). A state change from point A to point B is an isentropic change. Point C shows the state of the refrigerant flowing out of the condenser (for example, pressure 2.427 MPa, 42 ° C.). Point D shows the state of the refrigerant at the inlet of the first indoor heat exchanger 5a after being expanded by the first cycle expansion valve 2 (for example, pressure 0.584 MPa, 5 ° C.). The state change from the point C to the point D is a geometric enthalpy change.

Here, a specific operation state in the case where the second cycle of the composite air-conditioning hot-water supply apparatus is a Carnot cycle power generation cycle will be described with reference to a one-dot chain line Ph (Mollier) diagram in FIG. Point A ′ in the second cycle of the power generation cycle is heated in the condenser 3 by the refrigerant in the first cycle, and the state of the refrigerant (for example, pressure 1.943 MPa, 68 ° C.) supplied to the second cycle expander 7 is changed. It expands by the 2nd cycle expander 7, becomes low pressure and low temperature, and becomes a point B '(for example, pressure 0.681MPa, 12 degreeC). The state change from the point A ′ to the point B ′ is an isentropic change. Point C ′ indicates the state of the refrigerant flowing out of the heat exchanger 4 (for example, pressure 0.681 MPa, 10 ° C.). Point D ′ indicates the state of the refrigerant at the inlet of the condenser 3 after being pressurized by the second cycle refrigerant pump 6 (for example, pressure 1.943 MPa, 36 ° C.). The state change from the point C ′ to the point D ′ is an isentropic change.

Here, the power generation amount of the combined air conditioning and hot water supply apparatus will be described with reference to the Ph (Mollier) diagram of FIG. In this figure, the theoretical power obtained when the total adiabatic efficiency of the expander 7 and the refrigerant pump 6 is 1, the power generation efficiency of the generator 19 is 100%, and there is no loss of piping or other equipment. Is a value obtained by multiplying the value of the specific enthalpy generated from the second cycle of the Carnot cycle and the theoretical expansion power Δi of the expander 7 of the second cycle by the circulating flow rate of the refrigerant.

The block diagram which shows the case where the 2nd cycle of the compound air-conditioning hot-water supply apparatus at the time of cooling hot water supply is a refrigerating cycle. The block diagram which shows the case where the 2nd cycle of the compound air-conditioning hot-water supply apparatus at the time of cooling hot water supply is a Carnot cycle power generation cycle. The block diagram which shows the case where the 2nd cycle of the composite air-conditioning hot-water supply apparatus at the time of heating hot-water supply is a refrigerating cycle. The block diagram which shows the case where the 2nd cycle of the composite air-conditioning hot-water supply apparatus at the time of heating hot-water supply is a Carnot cycle power generation cycle. The Ph diagram in case the 1st cycle and 2nd cycle of a compound air-conditioning hot-water supply apparatus at the time of cooling hot water supply are power generation cycles.

DESCRIPTION OF SYMBOLS 1 ... 1st cycle compressor, 2 ... 1st cycle expansion valve, 3 ... Condenser, 4 ... Heat exchanger, 5a ... 1st indoor heat exchanger, 5b .. Second indoor heat exchanger, 6 ... refrigerant pump, 7 ... second cycle expander, 8, 9, 10, 11 ... first cycle refrigerant piping, 12, 13, 14, 15 ... 2nd cycle refrigerant piping, 16 ... drive machine, 17 ... temperature sensor, 18 ... control device, 19 ... 2nd cycle generator, 20 ... 2nd cycle Expansion valve, 21 ... four-way valve, 22 ... hot water supply heat exchanger, 23 ... hot water supply pump, 24, 25 ... hot water supply piping, 26 ... hot water storage tank,

Claims (17)

In cooling hot water supply, a hot water supply heat exchanger, a condenser, a receiver (not shown), an expansion valve, a first indoor heat exchanger, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the reverse Carnot cycle, the condenser and heat exchanger of the first cycle, the second liquid receiver (not shown), the expansion valve of the second cycle, the second indoor heat exchanger, and the refrigerant pump In a combined air-conditioning hot water supply apparatus having a combined cycle consisting of a second cycle of a refrigeration cycle in which refrigerant is circulated in order so that the refrigerant circulates in the hot water supply heat exchanger by the refrigerant having become high temperature by the compressor of the first cycle After raising the temperature of the hot water, the second cycle refrigerant is heated by the condenser by utilizing the unused heat energy that has been released to the atmosphere in order to cool the refrigerant from the condenser. To the second cycle expansion valve The entire cooling and hot water supply capacity and cooling hot water supply efficiency are obtained by performing expansion through the second indoor heat exchanger in the second cycle and adding to the cooling capacity of the first indoor heat exchanger in the conventional first cycle. Combined air-conditioning hot water supply apparatus characterized by being able to improve. In cooling hot water supply, a hot water supply heat exchanger, a condenser, a receiver (not shown), an expansion valve, a first indoor heat exchanger, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the reverse Carnot cycle, the expander in which the second cycle generator is assembled to the condenser of the first cycle, the heat exchanger of the first cycle, and the refrigerant pump are circulated in order. In the combined air conditioning and hot water supply apparatus having the combined cycle consisting of the second cycle of the power generation cycle connected to the refrigerant pipe, the temperature of the hot water in the hot water supply heat exchanger is increased by the refrigerant that has become high temperature by the compressor of the first cycle, The temperature of the refrigerant in the second cycle is increased by heat exchange in the condenser, power is generated by the driving force of the second cycle expander by the expansion force, and the cooling capacity of the first indoor heat exchanger in the conventional first cycle By adding, complex air-conditioning hot-water supply device, characterized in that it is possible to improve the overall cooling water heating capacity and cooling the hot water supply efficiency. In cooling hot water supply, a hot water supply heat exchanger, a condenser, a receiver (not shown), an expansion valve, a first indoor heat exchanger, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the reverse Carnot cycle, the condenser and heat exchanger of the first cycle, the second liquid receiver (not shown), the expansion valve of the second cycle, the second indoor heat exchanger, and the refrigerant pump In a combined air-conditioning hot water supply apparatus having a combined cycle consisting of a second cycle of a refrigeration cycle in which refrigerant is circulated in order so that the refrigerant circulates, a hot water supply heat exchanger using the refrigerant that has become high temperature by the compressor in the first cycle After the temperature of the hot water is raised in step 2, the second cycle refrigerant and the first cycle refrigerant are heated by utilizing the unused thermal energy that has been released to the atmosphere by a condenser for cooling only in the past. To exchange and use In order to improve the overall cooling hot water supply capacity and cooling hot water supply efficiency, the circulation amount of the refrigerant in the second cycle is detected and controlled by the temperature sensor so that the optimum temperature and circulation amount can always be maintained. A combined air conditioning and hot water supply system. In heating hot water supply, a hot water supply heat exchanger, a first indoor heat exchanger, a condenser, a receiver (not shown), an expansion valve, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the reverse Carnot cycle, the condenser of the first cycle, the second indoor heat exchanger, the first cycle heat exchanger, the second liquid receiver (not shown), and the expansion of the second cycle In a combined air-conditioning hot water supply apparatus having a combined cycle consisting of a second cycle of a refrigeration cycle in which refrigerant is circulated in order so that the refrigerant circulates through a valve and a refrigerant pump, After raising the temperature of the hot water in the heat exchanger, the second cycle refrigerant is raised by the condenser by utilizing the unused thermal energy that has been released to the atmosphere by the condenser only for cooling. Warm up the second rhino Heating through the second indoor heat exchanger of the air and adding to the heating capacity of the first indoor heat exchanger of the conventional first cycle, the overall heating hot water supply capacity and heating hot water supply efficiency can be improved A combined air conditioning and hot water supply system. In heating hot water supply, a hot water supply heat exchanger, a first indoor heat exchanger, a condenser, a receiver (not shown), an expansion valve, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the refrigeration cycle of the reverse Carnot cycle, the expander assembled with the condenser of the first cycle and the generator of the second cycle, the heat exchanger of the first cycle, and the refrigerant pump in order so that the refrigerant circulates. In the combined air conditioning and hot water supply apparatus having the combined cycle consisting of the second cycle of the power generation cycle connected to the refrigerant pipe, the temperature of the hot water in the hot water supply heat exchanger is increased by the refrigerant that has become high temperature by the compressor of the first cycle, Conventionally, by utilizing the unused thermal energy released to the atmosphere by the condenser only for cooling, the refrigerant in the second cycle is heated by the heat exchange in the condenser, and the expansion force By generating electricity with the driving force of the second cycle expander and adding to the heating capacity of the first indoor heat exchanger of the conventional first cycle, the overall heating hot water supply capacity and heating hot water supply efficiency can be improved. A combined air conditioning hot water supply system. In heating hot water supply, a hot water supply heat exchanger, a first indoor heat exchanger, a condenser, a receiver (not shown), an expansion valve, and a heat exchanger are connected to the compressor in order by refrigerant piping so that the refrigerant circulates. The first cycle of the reverse Carnot cycle, the condenser of the first cycle, the second indoor heat exchanger, the first cycle heat exchanger, the second liquid receiver (not shown), and the expansion of the second cycle In a combined air-conditioning hot water supply apparatus having a combined cycle consisting of a second cycle of a refrigeration cycle in which refrigerant is circulated in order so that the refrigerant circulates through a valve and a refrigerant pump, After raising the temperature of the hot water in the heat exchanger, conventionally, the second cycle refrigerant and the first cycle are utilized by utilizing the unused thermal energy released to the atmosphere by the condenser only for cooling. Heat exchange of the refrigerant In order to improve the overall heating and hot water supply capacity and heating hot water supply efficiency, the circulation amount of the refrigerant in the second cycle is detected and controlled by the temperature sensor, so that the optimum temperature and circulation amount can always be maintained. A combined air-conditioning hot water supply system characterized by In the cooling hot water supply, the first cycle is performed in order so that the refrigerant circulates through the compressor, the hot water supply heat exchanger, the condenser, the liquid receiver (not shown), the expansion valve, the first indoor heat exchanger, and the heat exchanger. The refrigerant of the first cycle, which is connected by the refrigerant pipe and compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger, warms the hot water, and then in the condenser, After exchanging heat and flowing into the expansion valve through a liquid receiver (not shown), the temperature becomes low temperature and low pressure, flows into the first indoor heat exchanger, cools, returns to the compressor through the heat exchanger A refrigeration cycle is configured.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The second cycle refrigeration cycle includes a first cycle condenser, a first cycle heat exchanger, a second liquid receiver (not shown), a second cycle expansion valve, a second indoor heat exchanger, and a refrigerant pump. The refrigerant is connected in order so that the refrigerant circulates, and the refrigerant that has exchanged heat with the refrigerant in the first cycle in the condenser and becomes high temperature and high pressure is condensed in the heat exchanger by the refrigerant in the first cycle and received. It flows into the expansion valve of the second cycle through the liquid device (not shown), becomes low temperature and low pressure, flows into the second indoor heat exchanger, cools, enters the refrigerant pump, and is pressurized and returns to the condenser. It is comprised by. Conventionally, the unused heat energy of the first cycle, which has been released into the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the expansion valve of the second cycle Cooling is performed in the second indoor heat exchanger by the refrigerant that has been expanded by the low temperature and low pressure. Thus, by adding the cooling capacity of the second indoor heat exchanger of the second cycle to the cooling capacity of the first indoor heat exchanger of the conventional first cycle, the overall cooling hot water supply capacity and cooling hot water supply efficiency are greatly improved. A combined air-conditioning hot water supply device characterized in that In the cooling hot water supply, the first cycle is performed in order so that the refrigerant circulates through the compressor, the hot water supply heat exchanger, the condenser, the liquid receiver (not shown), the expansion valve, the first indoor heat exchanger, and the heat exchanger. The first cycle refrigerant, which is connected by the refrigerant pipe and compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger and raises the temperature of the hot water supply, and then in the condenser, After heat exchange, it flows into the expansion valve via the liquid receiver (not shown), becomes low temperature and low pressure, flows into the first indoor heat exchanger, cools, passes through the heat exchanger, and returns to the compressor The refrigeration cycle is configured.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The power generation cycle of the second cycle is made up of refrigerant pipes in order so that the refrigerant circulates through the expander assembled with the condenser of the first cycle and the generator of the second cycle, the heat exchanger of the first cycle, and the refrigerant pump. The refrigerant, which is connected and exchanges heat with the refrigerant in the first cycle in the condenser and becomes high temperature and high pressure, flows into the expander assembled with the generator in the second cycle, generates electricity, becomes low temperature and low pressure, The refrigerant flows into the exchanger, exchanges heat with the refrigerant in the first cycle, is pressurized by the refrigerant pump, and returns to the condenser. Conventionally, the second cycle expander utilizes heat energy from the first cycle, which has been released to the atmosphere by the condenser only for cooling, by heat exchange with the second cycle refrigerant in the condenser. To generate electricity. Thus, by adding the power generation capacity of the second cycle to the cooling capacity of the first indoor heat exchanger of the conventional first cycle, the overall cooling hot water supply capacity and cooling hot water supply efficiency can be greatly improved. Combined air conditioning and hot water supply equipment. In the heating and hot water supply, the first cycle is performed in order so that the refrigerant circulates through the compressor, the hot water supply heat exchanger, the first indoor heat exchanger, the condenser, the liquid receiver (not shown), the expansion valve, and the heat exchanger. The refrigerant of the first cycle, which is connected by the refrigerant piping and compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger, raises the temperature of the hot water supply water, and then flows into the first indoor heat exchanger for heating. And flows into the condenser, exchanges heat with the refrigerant in the second cycle, flows into the expansion valve via a liquid receiver (not shown), then becomes low temperature and low pressure, returns to the compressor through the heat exchanger. Thus, a refrigeration cycle is configured.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The second cycle refrigeration cycle includes a first cycle condenser, a second indoor heat exchanger, a first cycle heat exchanger, a second liquid receiver (not shown), a second cycle expansion valve, and a refrigerant pump. The refrigerant is connected in order so that the refrigerant circulates, and the refrigerant that has exchanged heat with the refrigerant of the first cycle in the condenser and has become high temperature and high pressure flows into the second indoor heat exchanger, performs heating, After heat exchange with the refrigerant in the first cycle in the heat exchanger, the refrigerant flows into the second receiver (not shown) and the expansion valve in the second cycle, becomes low temperature and low pressure, and is pressurized by the refrigerant pump. It is composed by returning. Conventionally, the unused heat energy of the first cycle, which has been released to the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the high temperature of the second cycle, Heating is performed in the second indoor heat exchanger by the refrigerant thus obtained. Thus, by adding the heating capacity of the second indoor heat exchanger of the second cycle to the heating capacity of the first indoor heat exchanger of the conventional first cycle, the overall heating hot water supply capacity and heating hot water supply efficiency are greatly improved. A combined air-conditioning hot water supply device characterized in that In the heating and hot water supply, the first cycle is performed in order so that the refrigerant circulates through the compressor, the hot water supply heat exchanger, the first indoor heat exchanger, the condenser, the liquid receiver (not shown), the expansion valve, and the heat exchanger. The refrigerant of the first cycle, which is connected by the refrigerant piping and compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger, raises the temperature of the hot water supply water, and then flows into the first indoor heat exchanger for heating. , Flows into the condenser, exchanges heat with the refrigerant in the second cycle, flows into the expansion valve through the receiver (not shown), becomes low temperature and low pressure, passes through the four-way valve, and is compressed through the heat exchanger By returning to the machine, the refrigeration cycle is configured. The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The power generation cycle of the second cycle is connected by refrigerant piping in order so that the refrigerant circulates through the expander, the heat exchanger, and the refrigerant pump assembled with the condenser of the first cycle and the generator of the second cycle. The refrigerant that has exchanged heat with the refrigerant in the first cycle and has become high temperature and high pressure flows into the expander in which the generator in the second cycle is assembled, generates electric power, and the refrigerant in the first cycle After heat exchange, the pressure is raised by the refrigerant pump and returned to the condenser. Conventionally, the unused heat energy of the first cycle, which has been released to the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the high temperature of the second cycle, Electric power is generated in the second expander by the refrigerant. Thus, by adding the power generation capability of the second cycle to the heating capability of the first indoor heat exchanger of the conventional first cycle, the overall heating capability and heating efficiency can be greatly improved. Combined air conditioning and hot water supply system. In the cooling hot water supply, the first cycle includes a compressor, a hot water supply heat exchanger, a four-way valve, a condenser, a liquid receiver (not shown), an expansion valve, a four-way valve, a first indoor heat exchanger, a four-way valve, and a heat exchanger. The refrigerant in the first cycle, which is connected by refrigerant pipes in order so that the refrigerant circulates and is compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger, raises the temperature of the hot water supply, In the condenser through the valve, heat exchange with the refrigerant in the second cycle is performed, and after flowing into the expansion valve through the liquid receiver (not shown), the temperature becomes low temperature and low pressure, and through the four-way valve, the first indoor heat exchanger The refrigeration cycle is configured by cooling the air, cooling it, passing through the four-way valve, and returning to the compressor through the heat exchanger.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The second cycle refrigeration cycle includes a first cycle condenser, a four-way valve, a first cycle heat exchanger, a second liquid receiver (not shown), a second cycle expansion valve, a four-way valve, and a second chamber. The refrigerant pipes are connected in order so that the refrigerant circulates through the heat exchanger, the four-way valve, and the refrigerant pump. In the condenser, the high-temperature and high-pressure refrigerant exchanges heat with the refrigerant in the first cycle, and passes through the four-way valve. In the heat exchanger, it is condensed by the refrigerant in the first cycle, flows into the expansion valve via a liquid receiver (not shown), becomes low temperature and low pressure, further flows into the second indoor heat exchanger through a four-way valve, and cools it. This is done by entering the refrigerant pump through a four-way valve, increasing the pressure, and returning to the condenser. Conventionally, the unused heat energy of the first cycle, which has been released into the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the expansion valve of the second cycle Cooling is performed in the second indoor heat exchanger by the refrigerant that has been expanded by the low temperature and low pressure. Thus, by adding the cooling capacity of the second indoor heat exchanger of the second cycle to the cooling capacity of the first indoor heat exchanger of the conventional first cycle, the overall cooling hot water supply capacity and cooling hot water supply efficiency are greatly improved. A combined air-conditioning hot water supply device characterized in that In the cooling hot water supply, the first cycle includes a compressor, a hot water supply heat exchanger, a four-way valve, a condenser, a liquid receiver (not shown), an expansion valve, a four-way valve, a first indoor heat exchanger, a four-way valve, and a heat exchanger. The refrigerant in the first cycle, which is connected by refrigerant pipes in order so that the refrigerant circulates and is compressed by the compressor and becomes high temperature and high pressure, flows into the hot water supply heat exchanger and raises the temperature of the hot water supply. In the condenser through the valve, heat exchange with the refrigerant in the second cycle is performed, flows into the expansion valve through the liquid receiver (not shown), becomes low temperature and low pressure, passes through the four-way valve, and enters the first indoor heat exchanger. The refrigeration cycle is constructed by flowing in and cooling, and again passing through the four-way valve, passing through the heat exchanger, and returning to the compressor.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The power generation cycle of the second cycle is made up of refrigerant pipes in order so that the refrigerant circulates through the expander assembled with the condenser of the first cycle and the generator of the second cycle, the heat exchanger of the first cycle, and the refrigerant pump. The refrigerant, which is connected and exchanges heat with the refrigerant in the first cycle in the condenser and becomes high temperature and high pressure, flows into the expander assembled with the generator in the second cycle, generates electricity, becomes low temperature and low pressure, The refrigerant flows into the exchanger, exchanges heat with the refrigerant in the first cycle, is pressurized by the refrigerant pump, and returns to the condenser. Conventionally, the second cycle expander utilizes heat energy from the first cycle, which has been released to the atmosphere by the condenser only for cooling, by heat exchange with the second cycle refrigerant in the condenser. To generate electricity. Thus, by adding the power generation capacity of the second cycle to the cooling capacity of the first indoor heat exchanger of the conventional first cycle, the overall cooling hot water supply capacity and cooling hot water supply efficiency can be greatly improved. Combined air conditioning and hot water supply equipment. In the heating and hot water supply, the first cycle includes a compressor, a hot water supply heat exchanger, a four-way valve, a first indoor heat exchanger, a four-way valve, a condenser, a receiver (not shown), an expansion valve, a four-way valve, and a heat exchanger. The refrigerant of the first cycle, which is connected by refrigerant pipes in order so that the refrigerant circulates and is compressed by the compressor and becomes high temperature and high pressure flows into the hot water supply heat exchanger, raises the temperature of the hot water supply, 1 Flowing into the indoor heat exchanger, heating, flowing into the condenser via the four-way valve, exchanging heat with the refrigerant in the second cycle, flowing into the expansion valve via the receiver (not shown), The refrigeration cycle is configured by low pressure, passing through a four-way valve, passing through a heat exchanger, and returning to the compressor.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The refrigeration cycle of the second cycle includes a condenser and a four-way valve of the first cycle, a heat exchanger of the first cycle and a second liquid receiver (not shown) via a second indoor heat exchanger and a four-way valve. ) And the second cycle expansion valve, the four-way valve, and the refrigerant pump are connected in order so that the refrigerant circulates, and the refrigerant exchanges heat with the refrigerant in the first cycle in the condenser and becomes a high temperature and high pressure, After flowing into the second indoor heat exchanger via the four-way valve, heating, and exchanging heat with the refrigerant of the first cycle in the heat exchanger via the four-way valve, the second liquid receiver (not shown) and It flows into the expansion valve of the second cycle, becomes low temperature and low pressure, is further pressurized by a refrigerant pump through a four-way valve, and returns to the condenser. Conventionally, the unused heat energy of the first cycle, which has been released to the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the high temperature of the second cycle, Heating is performed in the second indoor heat exchanger by the refrigerant thus obtained. Thus, by adding the heating capacity of the second indoor heat exchanger of the second cycle to the heating capacity of the first indoor heat exchanger of the conventional first cycle, the overall heating hot water supply capacity and heating hot water supply efficiency are greatly improved. A combined air-conditioning hot water supply device characterized in that In the heating and hot water supply, the first cycle includes a compressor, a hot water supply heat exchanger, a four-way valve, a first indoor heat exchanger, a four-way valve, a condenser, a receiver (not shown), an expansion valve, a four-way valve, and a heat exchanger. The refrigerant of the first cycle, which is connected by refrigerant pipes in order so that the refrigerant circulates and is compressed by the compressor and becomes high temperature and high pressure flows into the hot water supply heat exchanger, raises the temperature of the hot water supply, 1 Flows into the indoor heat exchanger, heats it, flows into the condenser via a four-way valve, exchanges heat with the refrigerant in the second cycle, flows into the expansion valve via a receiver (not shown), and runs at low temperature and low pressure Thus, the refrigeration cycle is configured by passing through the four-way valve, passing through the heat exchanger, and returning to the compressor.
The hot water heated in the hot water heat exchanger by the high-temperature and high-pressure refrigerant in the first cycle is circulated by the hot water pump through the hot water piping and stored in the hot water storage tank.
The power generation cycle of the second cycle is connected by refrigerant piping in order so that the refrigerant circulates between the expander, the heat exchanger, and the refrigerant pump assembled with the first cycle condenser and the second cycle generator. The refrigerant that has exchanged heat with the refrigerant in the first cycle and has become high temperature and high pressure flows into the expander in which the generator in the second cycle is assembled, generates electric power, and the refrigerant in the first cycle After heat exchange, the pressure is raised by the refrigerant pump and returned to the condenser. Conventionally, the unused heat energy of the first cycle, which has been released to the atmosphere by the condenser only for cooling, is utilized by heat exchange with the refrigerant of the second cycle in the condenser, and the high temperature of the second cycle, Electric power is generated in the second expander by the refrigerant. Thus, by adding the power generation capability of the second cycle to the heating capability of the first indoor heat exchanger of the conventional first cycle, the overall heating capability and heating efficiency can be greatly improved. Combined air conditioning and hot water supply system. In Claim 1 or 3 or 4 or 6 or 7 or 9 or 11 or 13, it has a plurality of indoor heat exchangers in the first cycle and the second cycle, respectively, and the indoor heat exchangers are individually stacked in series. A combined air-conditioning hot water supply system that can be combined to suit each cooling characteristic. Claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 wherein the refrigerant of the first cycle and the refrigerant of the second cycle are matched to the respective characteristics A combined air-conditioning hot-water supply apparatus using different refrigerants, water, brine, and the like. Claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 that the conventional outdoor heat exchanger is eliminated and is an integrated indoor refrigeration system Characteristic composite air conditioner.

Images