KR101713543B1 - Heat recovery heat-pump cooling/heating device having hot water supplinh function - Google Patents

Abstract

The present invention relates to a heat pump air conditioner having heat recovery hot water supply function. A heat pump cooling / heating apparatus having a heat recovery hot water supply function of the present invention comprises: a compressor for compressing a low temperature and low pressure refrigerant gas into electricity with high temperature and high pressure; A first four-way valve for heat recovery that selectively changes the flow path for use of the high-temperature and high-pressure gas for cooling and heating and hot-water supply; A second 4-way valve for changing over the heating / cooling operation mode; A load-side heat exchanger for producing hot water in a heating mode and condensing the refrigerant by using the high-temperature and high-pressure gas passing through the first and second 4way valves; A heat recovery heat exchanger that generates free hot water through freeing of condensation heat in cooling mode or generates hot water in heating mode; A heat source-side heat exchanger for producing cold water using a low-temperature and low-pressure liquid refrigerant and phase-changing the gas to a low-temperature and low-pressure gas; First to third check valves for blocking or passing the refrigerant so that the refrigerant can flow in a normal direction toward the filter dryer; A primary (heating) or secondary (cooling) solenoid valve to block or pass the flow path so that the refrigerant can flow in the forward direction toward the filter dryer; An expansion valve for cooling or heating for changing the phase of the condensed refrigerant into liquid refrigerant at a low temperature and a low pressure; And a controller for controlling the operation of the primary or secondary 4way valve, the first to third check valves, or the primary or secondary solenoid valve according to the demand of cooling, heating or hot water supply on the user side .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat pump having a heat recovery hot water supply function,

[0001] The present invention relates to a heat pump cooling / heating apparatus, and more particularly, to a cooling / heating / heat recovery / hot water supply operation mode with a single single device and includes two 4WAY valves and three heat exchangers, The present invention relates to a heat pump cooling / heating apparatus having a heat recovery hot water supply function capable of operating at full load or partial load capacity of a heat pump when the heat pump is operated.

In recent summer, the annual average temperature has gradually increased, and the cooling period and demand are increasing.

In addition, due to global warming caused by the use of fossil fuels and depletion of fossil fuels, electric drive heat pumps, which are clean energy sources, have become widespread.

It is obvious that the heat pump has become a key industry for future heating and cooling ventilation around the world due to the low efficiency of the cooling / heating / hot water operation as well as the high efficiency. Therefore, researches to improve efficiency of system air conditioner, turbo heat pump, and geothermal heat pump have been continuously carried out in recent years.

As a result, the efficiency is increased, but the condensation heat of about 125% or more is discarded in the air than the evaporation heat for indoor cooling in summer.

Therefore, there is a continuing effort to recover the huge amount of condensed heat that is thrown into the atmosphere and use it as hot water or commercial hot water for everyday life.

However, the limit of the conventional heat recovery heat pump is that a complicated water piping system is constructed to recover the amount of condensed heat that is discarded during the cooling operation, so that only a part of the hot water supply is freely produced during the cooling operation time of the heat pump or a separate hot water tank is installed In addition, a supplementary heat source has been installed to solve the hot water supply load.

This means that heat recovery is possible only when the cooling load and the hot water supply load are in thermal equilibrium with each other.

Therefore, when the cooling load is small and the hot water supply load occurs at the peak, the balance between the amount of heat of condensation and the amount of heat of evaporation does not match, and normal operation becomes impossible.

For example, when the cooling load is constantly present, condensation heat is also generated continuously so that it can be used continuously for hot water supply, but hot water supply can not be produced if the cooling load is satisfied or not. Also, in winter, indirect heat exchanger was installed and used for the hot water requiring clean fresh water because there is no hot water operation mode or when it is used simultaneously with heating water.

This is due to the structural limitations of the conventional heat pump, and it has not been possible to separately separate the cooling / heating and the hot water supply. The use of fossil fuel for driving the compressor and the auxiliary heat source for hot water supply, Lt; / RTI > In addition, there is a problem that installation cost is increased as well as installation cost by separately installing heating and heating and hot water supply.

As a result, the heat pump was recognized by consumers as a facility with high installation costs and initial investment costs, which hindered the spread of heat pump diffusion.

The conventional heat recovery heat pump has one 4Way valve, one each of a condenser and an evaporator, and is driven by a heat pump cycle.

It can be said that the heat balance is balanced between the load side and the heat source side by absorbing or radiating heat from the heat source according to the required load on the load side. Therefore, the heat source should be abundant enough to satisfy the condenser and evaporator heat balance in the event of any load on the user side such as air, geothermal, seawater, and waste heat.

The conventional heat recovery heat pump is composed of one condenser and one evaporator. When the heat recovery and hot water addition function is separately used, a complicated water piping system is installed to dissipate the heat of condensation generated in the cooling operation separately And stored in the hot water tank installed separately without being discharged to the heat source side. In addition, since the heat recovery hot water supply can be used only when the condenser and evaporator heat balance are matched, the heat pump can not be started without cooling load, so that hot water can not be produced.

In case of winter heating operation, the heat source side will be an evaporator. Therefore, the hot water source should be used in the same way as the load side heating water, or a separate hot water supplementary heat source should be installed. When the heating water and the hot water are used together, a separate water-water heat exchanger must be installed for the hot water requiring the fresh water, so that the water pipe is complicated and the cost is also increased.

As a result, the conventional heat recovery heat pump is mainly used for cooling / heating, and the hot water supply can be additionally produced only in the case of the cooling operation in the summer. Thus, there is a limit to satisfy both the cooling / heating / there was.

Korea Patent Office Application No. 10-2007-0020413 Korea Patent Office Application No. 10-2009-0034667 Korea Patent Office Application No. 10-2009-0047290 Korea Patent Office Application No. 10-2012-0122924

It is an object of the present invention to provide a refrigeration, heating, and heat recovery hot water supply operation mode by a single device, and it is provided with two 4WAY valves and three heat exchangers. When a load occurs in each operation mode, The present invention also provides a heat pump cooling / heating apparatus having a heat recovery hot water supply function capable of operating with a capacity.

It is another object of the present invention to provide a heat recovery heat exchanger including a heat recovery heat exchanger provided separately with a condensation heat discarded to a heat source side during a cooling operation and having a heat recovery hot water supply function capable of selectively producing hot water, Thereby providing a pump cooling / heating apparatus.

The above object is achieved by a compressor comprising: a compressor for compressing a low-temperature low-pressure refrigerant gas into electricity using a high-temperature high-pressure gas; A first four-way valve for heat recovery that selectively changes the flow path for use of the high-temperature and high-pressure gas for cooling and heating and hot-water supply; A second 4-way valve for changing over the heating / cooling operation mode; A load-side heat exchanger for producing hot water in a heating mode and condensing the refrigerant by using the high-temperature and high-pressure gas passing through the first and second 4way valves; A heat recovery heat exchanger that generates free hot water through freeing of condensation heat in cooling mode or generates hot water in heating mode; A heat source-side heat exchanger for producing cold water using a low-temperature and low-pressure liquid refrigerant and phase-changing the gas to a low-temperature and low-pressure gas; First to third check valves for blocking or passing the refrigerant so that the refrigerant can flow in a normal direction toward the filter dryer; A primary (heating) or secondary (cooling) solenoid valve to block or pass the flow path so that the refrigerant can flow in the forward direction toward the filter dryer; An expansion valve for cooling or heating for changing the phase of the condensed refrigerant into liquid refrigerant at a low temperature and a low pressure; And a controller for controlling the operation of the primary or secondary 4way valve, the first to third check valves, or the primary or secondary solenoid valve according to the demand of cooling, heating or hot water supply on the user side And a heat pump water heater having a heat recovery hot water supply function.

By the system control of the controller, the cooling mode, the heating mode, the cooling and heat recovery hot water supply mode, and the heat recovery hot water supply mode can be implemented.

The system control of the controller enables the implementation of the operation mode (cycle 100%), (heating 100%), (cooling 100% + heat recovery hot water 100%) and (heat recovery hot water 100% (100% of cooling), (100% of cooling and 100% of heat recovery and hot water supply), (100% of heat recovery and 100% of heat recovery and hot water supply) (50% of cooling + 100% of heat recovery hot water), (50% of heating + 50% of heat recovery hot water).

A first pipe for facilitating switching of the secondary 4-way valve in a refrigerant cycle; And a second pipe that allows the pilot high-pressure capillary of the secondary 4-way valve to be always formed at a high pressure when the primary 4-way valve is switched to the heat recovery mode.

If the water source is insufficient, the air can be used as a heat source to satisfy both the load side (cooling / heating) and the heat recovery side (hot water) load.

According to the present invention, it is possible to perform a cooling, heating, and heat recovery hot water supply operation mode with one single device, and two 4WAY valves and three heat exchangers are provided. When a load occurs in each operation mode, So that it is possible to drive the vehicle.

Further, according to the present invention, there is an effect that the hot water heat exchanger provided separately with the condensation heat which is discarded to the heat source side during the cooling operation can be selectively changed to produce a separate hot water supply device and free hot water supply without cost.

Further, according to the present invention, it is possible to solve the limitation that a conventional heat recovery heat pump can not supply cooling, heating, and hot water to a single single device.

In addition, according to the present invention, it is possible to overcome the limit of the conventional heat recovery heat pump, which requires only a single cooling unit to produce a heat recovery hot water supply and a complicated water piping facility such as a separate water- There is an effect. That is, according to the present invention, it is not necessary to provide a complicated water piping facility for heat recovery from the water pipe as in the past, and a separate heat recovery heat exchanger and two 4Way valves are provided to separate the hot water from the cooling and heating, And the remaining two heat exchangers serve as a condenser and an evaporator so that the heat balance can be maintained at all times.

According to the present invention, unlike a conventional heat pump, free heat recovery water is produced during cooling operation, and hot water can be produced without cooling operation. Since a separate hot water heat exchanger is provided, Can be produced.

Further, according to the present invention, it is possible to produce heat recovery hot water free of charge in a single cooling device in a single unit, to perform hot water supply operation even when there is no cooling load, and to simultaneously perform heating operation and hot water supply operation .

1 is a circuit diagram of a cooling mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
2 is a circuit diagram of a heating mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
3 is a circuit diagram of a cooling and heat recovery hot water supply mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
4 is a circuit diagram of a heat recovery hot water supply mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
FIG. 5 is a circuit diagram of a cooling mode (100%) in a two-cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
FIG. 6 is a circuit diagram of a heating mode (100%) in a two-cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
7 is a circuit diagram of a cooling (100%) and a heat recovery (100%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
FIG. 8 is a circuit diagram of a heat recovery hot water (100%) dedicated mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
9 is a circuit diagram of a cooling (100%) and a heat recovery hot water (50%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
10 is a circuit diagram of a cooling (50%) and a heat recovery (100%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
11 is a circuit diagram of a heating (50%) and a heat recovery hot water (50%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.
12 is a control block diagram of a heat pump air conditioner having a function of supplying heat recovery hot water according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

However, the description of the present invention is merely an example for structural or functional explanation, and thus the scope of the present invention should not be construed as being limited by the embodiments described in the text.

For example, since the embodiments are susceptible to various modifications and various forms, the scope of the present invention should be construed as including equivalents capable of realizing technical ideas.

It is to be understood that the scope of the present invention should not be construed as being limited thereto since the object or effect of the present invention is not limited to the specific embodiment.

In the present specification, the present embodiment is provided to complete the disclosure of the present invention and to fully disclose the scope of the invention to a person having ordinary skill in the art to which the present invention belongs. And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

It is to be understood that the meaning of the terms used in the present invention is not limited to a dictionary meaning, but should be understood as follows.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined.

Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same components are denoted by the same reference numerals, and explanations of the same reference numerals will be omitted in some cases.

FIG. 1 is a circuit diagram of a cooling mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention, and FIG. 2 is a circuit diagram FIG. 3 is a circuit diagram of a heating mode in a heat pump air conditioner, and FIG. 3 is a circuit diagram of a heating mode in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention. 4 is a circuit diagram of a heat recovery hot water supply mode in a cycle configuration in a heat pump cooling / heating apparatus having a heat recovery hot water supply function according to an embodiment of the present invention. FIG. 5 is a circuit diagram of a heat recovery hot water supply system according to an embodiment of the present invention. FIG. 6 is a circuit diagram of a cooling mode (100%) in a two-cycle configuration in a heat pump air conditioner having a supply function. FIG. 7 is a circuit diagram of a heating mode (100%) in a two cycle construction in a heat pump air conditioner having a hot water supply function, FIG. 7 is a circuit diagram of a heating mode in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention, FIG. 8 is a circuit diagram of a cooling / heating (100%) mode and a heat recovery / hot water supply (100%) mode in the configuration of the heat pump water heater (100%) and a heat recovery hot water (50%) mode in a cycle configuration of a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention, FIG. 10 is a circuit diagram of a cooling (50%) and a heat recovery (100%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention, Invention FIG. 12 is a circuit diagram of a heating (50%) and a heat recovery hot water (50%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment, FIG. 1 is a control block diagram of a heat pump air conditioner having a supply function.

Referring to these drawings, the heat pump cooling / heating apparatus having the heat recovery hot water supply function according to the present embodiment is capable of cooling, heating, and heat recovery hot water supply operation mode with one single device, and has two 4WAY valves and three heat exchangers, If the load is generated in the operation mode, it can be operated with the full load or partial load capacity of the heat pump.

To this end, the heat pump cooling / heating apparatus having the heat recovery hot water supply function according to the present embodiment includes compressors 100 and 100-1 for compressing low temperature low pressure refrigerant gas into high temperature and high pressure gas by using electricity, A first four-way valve (110,110-1) for heat recovery, a second four-way valve (120,120-1) for switching heating and cooling operation modes for switching the heating and cooling operation mode, a first and second four- A load side heat exchanger (140) for producing hot water in a heating mode by using high temperature and high pressure gas passing through the valves (110, 110-1, 120 and 120-1) and condensing the refrigerant, generating free hot water through freeing of condensation heat in a cooling mode, Side heat exchanger (130, 130-1) for producing cold water by using the low-temperature and low-pressure liquid refrigerant and phase-changing the gas into low-temperature low-pressure gas, a heat source side heat exchanger First to third check valves 200, 200, 210, 210, 210, 220, 220-1 for blocking or passing the flow passage so as to flow in the forward direction toward the expansion valve and the filter dryer, refrigerant expansion valves (160, 160-1, 170, 170-1) (Heating) or secondary (cooling) solenoid valves 190, 190-1, 180, 180-1 for blocking or passing the flow path so as to flow in the forward direction toward the filter driers 240, 240-1, (110,110,120,120-1) according to the demand for cooling, heating, or hot water supply for the user side, the cooling or heating expansion valve (160,160-1,170,170-1) for changing the phase of the refrigerant to low pressure liquid refrigerant, ), A controller 300 (see FIG. 12) for controlling the operation of the first to third check valves 200, 200, 210, 210-1, 220, 220-1 or the primary or secondary solenoid valves 190, 190-1, can do.

At this time, the first piping (a, a-1) for facilitating the switching of the secondary 4-way valves 120, 120-1 in the refrigerant cycle of the present embodiment; And a second pipe (b, b-1) for allowing the pilot high-pressure capillary of the secondary 4-way valve (120, 120-1) to be always formed at a high pressure when the primary 4-way valve (110, 110-1) ). ≪ / RTI >

On the other hand, in the case of the present embodiment, it is possible to implement the cooling mode, the heating mode, the cooling and heat recovery hot water supply mode, and the heat recovery hot water supply mode by the system control of the controller 300.

That is, according to the system control of the controller 300, the present system is configured such that (100% of cooling), (100% of cooling, 100% of cooling and 100% of heat recovery hot water), Heat recovery water supply 100%) can be implemented.

(Cooling 100%), (heating 100%), (cooling 100% + heat recovery hot water 100%), (heat recovery hot water 100%), (cooling 100% + heat recovery 50% of hot water supply, 50% of cooling and 100% of heat recovery hot water), (50% of heating + 50% of heat recovery hot water). Therefore, it is possible to satisfy the load without any additional hot water auxiliary heat source device even under various demand load conditions.

The controller 300 performing such a role may include a central processing unit 310, a memory 320, a memory 320, and a support circuit 330, as shown in FIG.

In the present embodiment, the central processing unit 310 includes first or second four-way valves 110, 110-1, 120 and 120-1, first to third check valves 200, 200-1, 210, 210-1, 220 and 220-1, And may be one of a variety of computer processors that can be industrially applied to control the operation of the valves 190, 190-1, 180, 180-1, and the like.

The memory 320 (MEMORY) is connected to the central processing unit 310. The memory 320 may be a computer readable recording medium and may be located locally or remotely and may be any of various types of storage devices, such as random access memory (RAM), ROM, floppy disk, hard disk, At least one or more memories.

The support circuit 330 (SUPPORT CIRCUIT) is coupled with the central processing unit 310 to support the typical operation of the processor. Such a support circuit 330 may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

In this embodiment, the controller 300 includes a first or second 4-way valve 110, 110-1, 120 or 120-1, first to third check valves 200, 200-1, 210, 210-1, 220, 220-1, or a primary or secondary solenoid valve 190,190,180,180-1), and the like. At this time, a series of processes or the like in which the controller 300 controls the operation of the first to third check valves 200, 200-1, 210, 210-1, 220, 220-1, or the primary or secondary solenoid valves 190, 190-1, 180, And may be stored in the memory 320. Typically, software routines may be stored in memory 320. [ The software routines may also be stored or executed by other central processing units (not shown).

Although processes according to the present invention are described as being performed by software routines, it is also possible that at least some of the processes of the present invention may be performed by hardware. As such, the processes of the present invention may be implemented in software executed on a computer system, or in hardware such as an integrated circuit, or in combination of software and hardware.

Hereinafter, the present invention will be described in detail with reference to Figs. 1 to 11. Fig.

1 is a circuit diagram of a cooling mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

The refrigerant compressed in the compressor 100 at high temperature and high pressure can be determined to be in the heat recovery mode and the normal cooling / heating mode in the first 4-way valve 110.

Therefore, in the cooling mode, the electric signal of the first 4-way valve 110 is turned off and the electric signal of the second 4-way valve 120 is turned on.

When the refrigerant flow path is determined by the two four-way valves 110 and 120, the high-temperature and high-pressure gas refrigerant flows into the heat source side heat exchanger 130 and undergoes heat exchange with the heat source water to change its state to high pressure liquid refrigerant.

The refrigerant is flowed in the forward direction to the inlet of the filter drier 240 by the first (heating) solenoid valve 190 and the first and second check valves 200 and 210, and is discharged to the low-pressure liquid refrigerant .

At this time, the secondary (cooling) solenoid valve 180 is controlled to generate an ON signal so that the refrigerant can flow to the expansion valve 160.

The low-pressure liquid refrigerant is evaporated to a low-pressure gas refrigerant by the load-side heat exchanger 140 that is heat-exchanged with the load water on the user side.

The number of loads can be achieved by cooling the heat by the load-side heat exchanger 140.

And the low-pressure gas refrigerant evaporated by the load-side heat exchanger is introduced into the compressor 100 again by the secondary 4-way valve 120.

At this time, the 4Way valve and solenoid valve control signals are as follows.

2 is a circuit diagram of a heating mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

The refrigerant compressed in the compressor 100 at high temperature and high pressure can be determined to be in the heat recovery mode and the normal cooling / heating mode in the first 4-way valve 110. In the heating mode, the electric signal of the first 4-way valve 110 is turned OFF and the electric signal of the second 4-way valve 120 is turned ON.

Therefore, the gas refrigerant of high temperature and high pressure flows into the load side heat exchanger 140 and is condensed into high pressure liquid refrigerant by the load water. At this time, the load is heat-exchanged with the high-temperature and high-pressure refrigerant in the load-side heat exchanger 140 to achieve heating.

The condensed high-pressure liquid refrigerant flows forward through the second (cooling) solenoid valve 180 and the second and third check valves 210 and 220 to the inlet of the filter dryer 240 and is supplied to the heating expansion valve 170 by the low- Liquid refrigerant.

At this time, the primary (heating) solenoid valve 190 generates an ON signal by control to allow the refrigerant to flow to the heating expansion valve 170.

The low-pressure liquid refrigerant is evaporated in the low-pressure gas refrigerant by the heat-source-side heat exchanger 130, which is heat-exchanged with the heat source water on the heat source side, and then flows into the compressor 100 through the secondary 4-way valve 120 .

At this time, the 4Way valve and solenoid valve control signals are as follows.

3 is a circuit diagram of a cooling and heat recovery hot water supply mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This refrigerant system is a mode in which hot water supply can be produced free of charge in the case where the cooling load in summer and the hot water supply load are present at the same time.

The refrigerant compressed in the compressor 100 at high temperature and high pressure can be determined to be in the heat recovery mode and the normal cooling / heating mode in the first 4-way valve 110.

In the mode requiring a hot water supply load, the primary 4-way valve 110 generates an electric signal ON to change the refrigerant passage to the heat recovery heat exchanger 150.

However, in order to switch the secondary 4-way valve 120 that functions as a cooling / heating switching, the 4-way valve 120 high-pressure pipe b must be always at a high pressure, but the system is configured such that the pipe b is formed at a low pressure, I can not.

Accordingly, a pipe (a) for connecting the pilot high-pressure-side capillary to the compressor discharge pipe at which the high-pressure is always formed is provided so that the secondary 4-way valve 120 can be smoothly switched in any mode.

Therefore, the gas refrigerant of high temperature and high pressure flows into the heat recovery heat exchanger 150 and is condensed into high pressure liquid refrigerant by the hot water. At this time, the hot water is heat-exchanged with the high-temperature and high-pressure refrigerant in the heat recovery heat exchanger (150) to achieve hot water supply.

The condensed high-pressure liquid refrigerant flows forward through the primary (heating) solenoid valve 190 and the first and third check valves 200 and 220 to the inlet of the filter dryer 240, Liquid refrigerant. At this time, the secondary (cooling) solenoid valve 180 generates an ON signal by control to allow the refrigerant to flow to the cooling expansion valve 160.

The low-pressure liquid refrigerant is evaporated in the low-pressure gas refrigerant by the load-side heat exchanger 140, which is heat-exchanged with the load side load number, and forms a refrigerant cycle in which the refrigerant flows back into the compressor 100 through the secondary 4-way valve 120.

to be.

At this time, the 4Way valve and solenoid valve control signals are as follows.

4 is a circuit diagram of a heat recovery hot water supply mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operating mode is a refrigerant system when there is no heating / cooling load and only a hot water supply load exists.

The refrigerant compressed in the compressor 100 at high temperature and high pressure can be determined to be in the heat recovery mode and the normal cooling / heating mode in the first 4-way valve 110.

In the mode in which the hot water supply load is required, the primary 4-way valve 110 generates the electric signal ON to change the refrigerant passage to the heat recovery heat exchanger 150 and the secondary 4-way valve 120 to turn ON.

At this time, the switching of the secondary 4-way valve 120 that can not be switched due to the low pressure piping (b) can be accomplished by the pilot capillary tube (a). Accordingly, the high-temperature and high-pressure gas flows into the heat recovery heat exchanger 150 and is condensed into high-pressure liquid refrigerant by the hot water.

At this time, the hot water is heat-exchanged with the high-temperature and high-pressure refrigerant in the heat recovery heat exchanger (150) to achieve hot water supply.

The condensed high-pressure liquid refrigerant flows forward through the second (cooling) solenoid valve 180 and the first and third check valves 200 and 220 to the inlet of the filter dryer 240 and is supplied to the heating expansion valve 170 by the low- Liquid refrigerant.

At this time, the primary (heating) solenoid valve 190 generates an ON signal by control to allow the refrigerant to flow to the heating expansion valve 170.

The low-pressure liquid refrigerant is evaporated in the low-pressure gas refrigerant by the heat source-side heat exchanger 130, which is heat-exchanged with the heat source-side heat source water, and forms a refrigerant cycle in which the refrigerant flows into the compressor 100 again through the second-

At this time, the 4Way valve and solenoid valve control signals are as follows.

FIG. 5 is a circuit diagram of a cooling mode (100%) in a two-cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a two-cycle (100%) cooling operation mode using a dual type heat exchanger.

It is the operation mode when both Unit 1 and Unit 2 are operated by the same control, and there is no hot water supply load and cooling peak load occurs.

Each of the heat recovery switching units 110 and 110-1 and the 120 and 120-1 four-way valves for cooling and heating operation are operated by the same flow and control as the one-cycle cooling mode.

However, it is characterized in that each heat exchanger is applied as a dual type.

Typically, dual-type heat exchangers each have a water circuit common to a separate refrigerant circuit.

Each heat exchanger per cycle can be applied, but the dual type heat exchanger is applied because the refrigerant piping becomes complicated and the product price increases.

At this time, the 4Way valve and solenoid valve control signals are as follows.

- Unit 1

- Unit 2

FIG. 6 is a circuit diagram of a heating mode (100%) in a two-cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a heating operation mode of 100% of 2Cycle using dual type heat exchanger.

It is the operation mode when both Unit 1 and Unit 2 are operated with the same control, and there is no hot water supply load and cooling load, and heating peak load occurs.

Each of the heat recovery switching devices 110 and 110-1 and the heating and cooling switching devices 120 and 120-1 are operated by the same flow and control as the heating mode of one cycle.

However, it is characterized in that each heat exchanger is applied as a dual type.

At this time, the 4Way valve and solenoid valve control signals are as follows.

- Unit 1

- Unit 2

7 is a circuit diagram of a cooling (100%) and a heat recovery (100%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a 100% cooling mode of two cycles using a dual type heat exchanger and a 100% heat recovery water heating mode.

It is the operation mode when both the No. 1 and No. 2 are operated in the same cooling + heat recovery hot water supply mode, and the cooling load and the hot water supply load occur at the peak.

Each of the heat recovery switching devices 110 and 110-1 and the 120 and 120-1 four-way valves for heating / cooling switching operation are operated by the same flow and control as the above-described one cycle of cooling + heat recovery hot water supply mode. However, it is characterized in that each heat exchanger is applied as a dual type.

- Unit 1

- Unit 2

FIG. 8 is a circuit diagram of a heat recovery hot water (100%) dedicated mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a two cycle heat recovery hot water supply 100% operation mode using a dual type heat exchanger.

It is an operation mode in which both Unit 1 and Unit 2 are operated in the same heat recovery hot water supply mode and there is no cooling and heating load and the hot water supply load is peaked.

Each of the heat recovery switching units 110 and 110-1 and the 120 and 120-1 four-way valves for heating and cooling operation are operated by the same flow and control as the above-described one cycle heat recovery hot water supply mode.

However, it is characterized in that each heat exchanger is applied as a dual type.

- Unit 1

- Unit 2

9 is a circuit diagram of a cooling (100%) and a heat recovery hot water (50%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a 2-cycle cooling mode 100% + heat recovery hot water 50% operation mode using a dual type heat exchanger.

The first and second units are operated in different modes, wherein the first unit is a cooling mode and the heat recovery mode, and the second is a cooling mode cycle.

At this time, the operation modes of the units 1 and 2 may be opposite to each other. One caveat is that a refrigerant of the same phase (low or high pressure) must be formed in the dual type heat exchanger of cycles 1 and 2.

Such a cycle is a mode used when a cooling load occurs at a peak and a hot water supply load partially occurs.

If all of the hot water supply loads are satisfied, the operation mode of the first unit can be switched to the cooling mode so that the cooling operation can be performed at 100%.

The heat recovery switching unit 110 of the No. 1 unit and the 120-way 4Way valve for the heating / cooling switching operation are operated by the same flow and control as the above-described one cycle of cooling + heat recovery hot water supply mode, (120-1) The 4Way valve is operated with the same flow and control as the one-cycle cooling mode described above.

- Unit 1

- Unit 2

10 is a circuit diagram of a cooling (50%) and a heat recovery (100%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a 2-cycle 50% cooling + heat recovery hot water 100% operation mode using a dual type heat exchanger.

The first unit and the second unit are operated in different modes. The first unit is a heat recovery hot water supply mode, and the second unit is a refrigerant cycle for heat recovery hot water supply + cooling mode operation. At this time, the operation modes of the units 1 and 2 may be opposite to each other.

One caveat is that a refrigerant of the same phase (low or high pressure) must be formed in the dual type heat exchanger of cycles 1 and 2.

The above cycle is used when a cooling load occurs as a partial load and a hot water load occurs as a peak. If the cooling load is satisfied, the operation mode of the second unit can be switched to the heat recovery hot water supply mode and the 100% heat recovery hot water supply operation can be performed.

The heat recovery switching unit 110 for the No. 1 unit and the 4Way valve for the heating and cooling switching unit 120 are operated by the same flow and control as in the heat recovery hot water supply mode of the 1 cycle described above and are operated for the heat recovery switching unit 110-1, (120-1) The 4-way valve is operated with the same flow and control as the above-described one cycle of cooling + heat recovery hot water supply mode.

- Unit 1

- Unit 2

11 is a circuit diagram of a heating (50%) and a heat recovery hot water (50%) mode in a cycle configuration in a heat pump air conditioner having a heat recovery hot water supply function according to an embodiment of the present invention.

This operation mode is a 2-cycle heating 50% + heat recovery hot water 50% operation mode using a dual type heat exchanger.

The first and second units are operated in different modes. The first unit is a heating mode, and the second unit is a refrigerant cycle operated in a heat recovery hot water supply mode.

At this time, the operation modes of the units 1 and 2 may be opposite to each other. One caveat is that a refrigerant of the same phase (low or high pressure) must be formed in the dual type heat exchanger of cycles 1 and 2.

The above cycle is a mode used when a heating load and a hot water supply load occur as a partial load. If the heating load is satisfied, the requested load can be satisfied by stopping the first unit and stopping the second unit if the hot water supply load is satisfied.

The heat recovery switching unit 110 for the No. 1 unit and the 4Way valve for the heating / cooling switching unit 120 are operated by the same flow and control as the one-cycle heating mode described above. The heat recovery switching unit 110-1 for the No. 2 unit, (120-1) The 4-way valve is operated with the same flow and control as the one-cycle heat recovery hot water supply mode described above.

- Unit 1

- Unit 2

According to the present invention having the structure and operation as described above, according to the present invention, it is possible to perform a cooling, heating, and heat recovery hot water supply operation mode with one single device, and two 4WAY valves and three heat exchangers are provided, The heat pump can be operated with the full load or the partial load capacity of the heat pump.

Further, according to the present invention, it is possible to selectively change the flow path to the heat recovery heat exchanger provided separately from the condensation heat which is discharged to the heat source side during the cooling operation, thereby producing a separate hot water supply apparatus and free hot water supply at no cost.

Further, according to the present invention, it is possible to solve the problem that the conventional heat recovery heat pump can not supply cooling, heating, and hot water to a single single apparatus.

In addition, according to the present invention, it is possible to overcome the limit of the conventional heat recovery heat pump, which requires only a single cooling unit to produce a heat recovery hot water supply and a complicated water piping facility such as a separate water- have. That is, according to the present invention, it is not necessary to provide a complicated water piping facility for heat recovery from the water pipe as in the past, and a separate heat recovery heat exchanger and two 4Way valves are provided to separate the hot water from the cooling and heating, The heat balance can be maintained by controlling the remaining two heat exchangers to function as a condenser and an evaporator.

According to the present invention, unlike a conventional heat pump, free heat recovery water is produced during cooling operation, and hot water can be produced without cooling operation. Since a separate hot water heat exchanger is provided, Can be produced.

Further, according to the present invention, it is possible to produce heat recovery hot water free of charge in a single cooling device in a single device, and can perform hot water supply operation even when there is no cooling load, and can simultaneously perform heating operation and hot water supply operation in heating operation.

In particular, the present invention is capable of cooling, heating, and hot-watering operation by a single device. In particular, the present invention selectively recovers the amount of condensed heat discarded by the outside air or heat source in summer, Water can be produced, and hot water can be produced even when there is no cooling load, and hot water and hot water can be separately produced in winter.

Therefore, it can be optimized in the field where hot water supply is high. For example, in a case where a cooling and a hot water supply are simultaneously required, the total heat efficiency can be maximized by collecting the amount of condensed heat to be discharged into the cooling tower, the geothermal heat, etc., and using it for hot water supply.

When the cooling load is satisfied but the hot water supply load is not satisfied, it is designed to satisfy the hot water supply load by continuously switching the 4way valve for heat recovery and the 4way valve for heating and cooling.

In addition, when the heat source is insufficient or the place for constructing the heat source facility is narrow, the heat source side heat exchanger can be used as an air-cooled heat exchanger. When using an air-cooled heat exchanger, it can be installed without a separate machine room. Since the heat source water pipe is not necessary, the system installation cost is saved and the payback period is very short. Accordingly, since the amount of heat discarded to the atmosphere or the heat source side is recovered and used, it is possible to achieve the optimum system efficiency, and the water piping facility is simplified as compared with the conventional heat recovery heat pump and the supplementary heat source for hot water supply is not additionally installed, It is expected that it will have an excellent effect on saving.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is therefore intended that such modifications or alterations be within the scope of the claims appended hereto.

100, 100-1; compressor
110,110-1; 1st 4way (four way) valve for heat recovery
120,120-1; 2nd 4way (four way) valve for heating / cooling switching
130; Heat source side (hydrothermal) heat exchanger
130-1; Heat source side (air) heat exchanger
140; Load-side heat exchanger
150; Heat recovery heat exchanger
160,160-1; Expansion valve for cooling
170,170-1; Heating expansion valve
180,180-1; Secondary (for cooling) solenoid valve
190,190-1; Primary (heating) solenoid valve
200, 200-1; The first check valve
210, 210-1; The second check valve
220, 220-1; The third check valve
230,230-1; Sight Glass
240, 240-1; Filter dryer
300; controller
a, a-1; The first piping
b, b-1; The second piping

Claims (5)

A compressor for compressing a low-temperature low-pressure refrigerant gas into a high-temperature high-pressure gas using electricity;
A first four-way valve for heat recovery that selectively changes the flow path for use of the high-temperature and high-pressure gas for cooling and heating and hot-water supply;
A second 4-way valve for changing over the heating / cooling operation mode;
A load-side heat exchanger for producing hot water in a heating mode and condensing the refrigerant by using the high-temperature and high-pressure gas passing through the first and second 4way valves;
A heat recovery heat exchanger that generates free hot water through freeing of condensation heat in cooling mode or generates hot water in heating mode;
A heat source-side heat exchanger for producing cold water using a low-temperature and low-pressure liquid refrigerant and phase-changing the gas to a low-temperature and low-pressure gas;
First to third check valves for blocking or passing the refrigerant so that the refrigerant can flow in a normal direction toward the filter dryer;
A primary (heating) or secondary (cooling) solenoid valve to block or pass the flow path so that the refrigerant can flow in the forward direction toward the filter dryer;
An expansion valve for cooling or heating for changing the phase of the condensed refrigerant into liquid refrigerant at a low temperature and a low pressure;
A controller for controlling the operation of the primary or secondary 4way valve, the first to third check valves, or the primary or secondary solenoid valve according to the demand of cooling, heating, or hot water supply on the user side And a heat recovery hot water supply function capable of implementing a cooling mode, a heating mode, a cooling and a heat recovery hot water supply mode, and a heat recovery hot water supply mode by the system control of the controller,
A first pipe for facilitating the switching of the secondary 4-way valve in a refrigerant cycle and a pilot high pressure capillary of the secondary 4-way valve when the primary 4-way valve is switched to the heat recovery mode And a second pipe,
The system control of the controller enables the implementation of the operation mode (cycle 100%), (heating 100%), (cooling 100% + heat recovery hot water 100%) and (heat recovery hot water 100% (100% of cooling), (100% of cooling and 100% of heat recovery and hot water supply), (100% of heat recovery and 100% of heat recovery and hot water supply) (50% of cooling + 100% of heat recovery hot water), (50% of heating + 50% of heat recovery hot water)
(Heat / cooling) load and the heat recovery side (hot water supply) load by using air as a heat source when the water heat source is insufficient. delete delete delete delete

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