KR20220022495A - Heat pump system - Google Patents

Abstract

Disclosed is a cooling heat pump system for water and air dehumidification, capable of enhancing cooling and hot water supply performance by using a temperature stratified hot water supply tank. The dehumidification cooling heat pump system of the present invention includes a temperature stratified hot water supply tank, a heat pump, a high temperature water supply pipe, a high temperature water recovery pipe, a hot water supply pipe, a low temperature water supply pipe, a first water supply pipe, a recirculation pipe, a geothermal heat source connection pipe, a water supply pipe, a hot water branch pipe, a three-way valve, a second water supply pipe, and a central control unit.

Description

Water and air dehumidification cooling heat pump system that can increase cooling and hot water supply performance by using a temperature stratified hot water supply tank {HEAT PUMP SYSTEM}

The present invention relates to a heat pump system, and more particularly, to a water and air dehumidification cooling heat pump system capable of increasing cooling and hot water supply performance by using a temperature stratified hot water supply tank.

In general, in a heat pump system, a refrigerant circulating in a compressor, a condenser, an evaporator, and an expansion valve exchanges heat with a fluid (gas, liquid, etc.) to achieve heating and cooling, as well as to supply domestic water (water tank). It refers to a system that performs the function of hot water supply through heat exchange with domestic tap water, etc.).

In this heat pump system, a desuperheater (hot water supply heat exchanger) is included to supply hot water (hot water).

Looking at the cooling operation principle of the heat pump system, the liquid refrigerant passing through the evaporator takes heat from the indoor air and evaporates, and at the same time, the indoor air from which the heat has been taken becomes cold and circulated to a place requiring cooling, so that indoor cooling is achieved. is done

Looking at the heating operation principle of the heat pump system, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the heat exchanger to exchange heat with the indoor air, thereby heating the room.

Also, looking at the working principle of hot water supply of the heat pump system, when the high-temperature refrigerant that has passed through the compressor passes through the desuperheater, and at the same time, when the low-temperature water passes through the desuperheater, the high-temperature refrigerant and the low-temperature water By performing heat exchange, a hot water supply function in which low-temperature water is hot water supplied and heated is performed.

However, such a heat pump system is installed for each household or each floor of a building, and at this time, a hot water supply tank for storing hot water for hot water supply must be installed for each household or each floor. There was a problem of increasing the cost of installing it.

Patent Application No. 10-2017-0155883

Accordingly, an object of the present invention is to provide a heat pump system that can reduce the cost of installing a heat pump in an apartment house or building and reduce the cost for heating hot water.

A heat pump system according to an embodiment of the present invention includes: a temperature stratified hot water supply tank in which the upper space above the low-temperature water is filled with high-temperature water while the lower space is filled with low-temperature water; a heat pump installed for each household in an apartment building or each floor of a building and generating high-temperature water for heating and cooling and hot water supply; a high-temperature water supply pipe for supplying high-temperature water in the temperature-laminated hot water supply tank in one direction; a high-temperature water recovery pipe connected to the high-temperature water supply pipe to recover high-temperature water; a hot water supply pipe 330 branched from the hot water supply pipe to supply hot water to each household or each floor of a building; a low-temperature water supply pipe for supplying low-temperature water in the temperature-stratified hot water supply tank in the direction of the heat pump; a first water supply pipe branched from the low-temperature water supply pipe and connected to the heat pump and supplying low-temperature water to each household or each floor of a building; a circulating hot water pipe branching from the high-temperature water recovery pipe and connected to the heat pump, and recovering hot water for hot water supply generated by heat exchange between the low-temperature water and the high-temperature refrigerant in a heat pump installed on each floor of each household or building; a geothermal heat source connecting pipe connected between the heat pump and the geothermal heat source; a water supply pipe for supplying constant water therein from the water storage tank in which the water is stored; a hot water branch pipe connected between the hot water supply pipe and the water supply pipe and supplying a part of the hot water supplied through the hot water supply pipe to the water supply pipe; a three-way valve installed at an intersection where the hot water branch pipe is connected to the water supply pipe to open and close the hot water branch pipe; a second water supply pipe branching from the water supply pipe and supplying tepid water generated by the merging of hot water and constant water to each household or each floor of a building; and controlling the supply of the high temperature water and the low temperature water, opening and closing of the three-way valve, and the operation of the heater pump, and determining the operation state of the heater pump for each household or each floor and the shortage of the high temperature water, and It is characterized in that it includes a central control unit that controls the non-operating heater pump to generate hot water for hot water supply when the capacity is reduced from the reference amount.

In one embodiment, the heat pump may include: an air conditioner including an air conditioner for supplying hot or cold air to a room, a dehumidifier for dehumidifying outside air, and a regeneration heater for removing moisture in the dehumidifier; a compressor for discharging high-temperature refrigerant; a four-way valve connected to the outlet of the compressor and configured to change a direction in which the high-temperature refrigerant flows according to a cooling operation and a heating operation; a hot water supply heat exchanger connected to the hot water supply pipe and the first water supply pipe and generating hot water for hot water supply through heat exchange between a high temperature refrigerant and low temperature water during a cooling operation; a bypass pipe connected between the inlet and the outlet of the hot water supply heat exchanger to bypass the refrigerant so as not to pass through the hot water supply heat exchanger; an expansion valve disposed on the outlet side of the hot water supply heat exchanger; a geothermal heat source heat exchanger connected to a geothermal heat source to exchange heat between geothermal heat and a refrigerant; and a control unit (not shown) for controlling a cooling operation and a heating operation of the heat pump, wherein, during the heating operation, the high-temperature refrigerant discharged from the compressor is transferred from the second port of the four-way valve to the air conditioner. The refrigerant is supplied to the air conditioner along a path, and then flows into the bypass pipe and moves along the bypass pipe while moving along the second refrigerant transfer path connected from the air conditioner to the hot water heat exchanger, and is supplied to the expander, and then It is supplied to the geothermal heat source heat exchanger along a third refrigerant transfer path connected from the expander to the geothermal heat source heat exchanger, and then along a fourth refrigerant transfer path connected from the geothermal heat source heat exchanger to the third port of the four-way valve. It flows into the third port and then operates as a cycle in which the refrigerant is returned to the compressor along a refrigerant return path connected to the compressor from the fourth port of the four-way valve; During the cooling operation, the high-temperature refrigerant discharged from the compressor is supplied to the regeneration heater from the third port of the four-way valve along a fifth refrigerant transfer path connected to the regeneration heater, and then from the regeneration heater to the geothermal heat source heat exchanger. After passing through the geothermal heat source heat exchanger without heat exchange with the geothermal heat source, it moves along the connected sixth refrigerant transfer path, and then along the seventh refrigerant transfer path connected from the geothermal heat source heat exchanger to the hot water supply heat exchanger to the hot water supply heat exchanger is supplied, and then is supplied to the cooler along an eighth refrigerant transfer path connected from the hot water supply heat exchanger to the cooler, and then a second port along a ninth refrigerant transfer path from the cooler to the second port on all sides It flows into the furnace and then operates in a cycle that is recovered to the compressor along the refrigerant recovery path, and generates hot water for hot water supply when the refrigerant exchanges heat in the hot water heat exchanger during the cooling operation, and the generated hot water for hot water supply is It may be supplied to the temperature stratified hot water supply tank along the round hot water pipe and the high temperature water recovery pipe.

In one embodiment, the central control unit controls the heater pump so that, when the temperature stratified hot water supply tank is overfilled with high-temperature water, the refrigerant circulated during the cooling operation in the heater pump exchanges heat with the geothermal heat source heat exchanger, and the three-way By opening a port connected to the high-temperature water branch pipe of the valve, the high-temperature water in the thermally stratified hot water supply tank may be controlled to be supplied in the direction of the water supply pipe through the high-temperature water branch pipe.

According to the heat pump system according to the present invention, the temperature stratified hot water supply tank is commonly used in the apartment house or the whole building, and for the supply and use of high temperature water and low temperature water filled in the temperature stratified hot water supply tank, the apartment house Alternatively, since it is only necessary to connect the hot water supply pipe 330, the first water supply pipe, and the hot water supply pipe in each household or each floor to the hot water supply pipe and the low temperature water supply pipe installed in the building, installation and piping of the hot water supply tank for each household or each floor Since no equipment is required, the cost of piping equipment for the use of the heat pump for each household or each floor is reduced, and consequently, there is an advantage that the cost of installing a heat pump in an apartment house or building can be reduced.

In addition, since the hot water for hot water supply generated for each household or each floor is recovered to the temperature stratified hot water supply tank, it is possible to fill the hot water for hot water supply, thereby eliminating the need for a separate facility for generating hot water for hot water supply. There is an advantage in that the cost for heating the hot water is reduced.

1 is a view for explaining the configuration of a heat pump system according to an embodiment of the present invention.
FIG. 2 is a view for explaining the configuration of the heat pump shown in FIG. 1 .
FIG. 3 is a view for explaining a heating operation process of the heat pump shown in FIG. 1 .
FIG. 4 is a view for explaining a cooling operation process of the heat pump shown in FIG. 1 .

Hereinafter, a heat pump system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

FIG. 1 is a diagram for explaining the configuration of a heat pump system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the configuration of the heat pump shown in FIG. 1 .

Referring to FIG. 1 , a heat pump system according to an embodiment of the present invention includes a temperature stratified hot water supply tank 100 , a heat pump 200 , a high temperature water supply pipe 310 , a high temperature water recovery pipe 320 , and a hot water supply pipe. (330), low-temperature water supply pipe (340), first water supply pipe (350), round hot water pipe (360), underground heat source connection pipe (370), water supply pipe (410), high-temperature water branch pipe (380), three-way valve ( 420), a second water supply pipe 430, and a central control unit (not shown) may be included.

Although the temperature stratified hot water supply tank 100 has one internal space, high-temperature water is filled in the upper space above the low-temperature water in a state in which the low-temperature water is filled in the lower space, so that high-temperature water is present in the upper space and low-temperature water is in the lower space at the same time. It refers to a tank in which hot water and cold water coexist while forming a boundary with each other. Such a temperature stratified hot water supply tank 100 may be installed in a machine room of an apartment house or building.

The heat pump 200 may be installed for each household of an apartment house or each floor of a building, and may generate hot water for heating and cooling and hot water supply.

The high-temperature water supply pipe 310 may supply high-temperature water in the temperature stratified hot water supply tank 100 in one direction. The high-temperature water supply pipe 310 may be a common pipe for supplying high-temperature water to each household of an apartment house or each floor of a building.

The high-temperature water recovery pipe 320 may be connected to the high-temperature water supply pipe 310 to recover high-temperature water. The high-temperature water recovery pipe 320 may recover the high-temperature water supplied along the high-temperature water supply pipe 310 to the temperature stratified hot water supply tank 100 , and may be a common pipe installed in an apartment house or a building.

The hot water supply pipe 330 is branched from the hot water supply pipe 310 to supply hot water to each household or each floor of a building.

The low-temperature water supply pipe 340 may supply low-temperature water in the temperature stratified hot water supply tank 100 in the direction of the heat pump 200 . The low-temperature water supply pipe 340 may be a common pipe for supplying low-temperature water to each household of an apartment house or each floor of a building.

The first water supply pipe 350 is branched from the low-temperature water supply pipe 340 and is connected to the heat pump 200 installed for each household or each floor, and can supply low-temperature water to each household or each floor of a building. The low-temperature water may be supplied to the heat pump 200 installed on each floor of each household or building to exchange heat with the high-temperature refrigerant.

The round-water pipe 360 is branched from the high-temperature water recovery pipe 320 and connected to the heat pump 200, and is generated by heat exchange between low-temperature water and high-temperature refrigerant in the heat pump 200 installed on each floor of each household or building. High-temperature water for hot water supply can be recovered.

The underground heat source connection pipe 370 may be connected between the heat pump 200 and the underground heat source 290 .

The water supply pipe 410 may supply constant water therein from the water storage tank 500 in which the water is stored in one direction. The water supply pipe 410 may be a common pipe for supplying tepid water to each household or each floor of a building.

The hot water branch pipe 380 is connected between the hot water supply pipe 310 and the water supply pipe 410 , and may supply a portion of the hot water supplied through the hot water supply pipe 310 to the water supply pipe 410 .

The three-way valve 420 may be installed at an intersection where the hot water branch pipe 380 is connected to the water supply pipe 410 to open and close the hot water branch pipe 380 .

The second water supply pipe 430 is branched from the water supply pipe 410 , and may supply tepid water generated by the merging of hot water and constant water to each household or each floor of a building.

The central control unit controls the supply of hot and low-temperature water in the temperature-stratified hot water supply tank 100, the opening and closing of the three-way valve 420, and the operation of the heat pump 200, and heat pumps for each household or each floor. The operation state of 200 and the shortage of the high-temperature water are determined, and when the high-temperature water is insufficient, the non-operational heat pump 200 may be controlled to generate high-temperature water for hot water supply.

In addition, when the temperature stratified hot water supply tank 100 is overfilled with high-temperature water, the central control unit heats the refrigerant circulated during the cooling operation in the heat pump 200 for each household or each floor with the geothermal heat source heat exchanger 270. control the heat pump 200 to do so, and open the port connected to the hot water branch pipe 380 of the three-way valve 420 to transfer the hot water in the temperature stratified hot water supply tank 100 through the hot water branch pipe 380 It can be controlled to be supplied in the direction of the water supply pipe 410 .

Meanwhile, referring to FIG. 2 , the heat pump 200 installed in each household or each floor includes an air conditioner 210 , a compressor 220 , a four-way valve 230 , a hot water heat exchanger 240 , and a bypass pipe 250 . ), an expansion valve 260 , a geothermal heat source heat exchanger 270 , and a controller (not shown).

The air conditioner 210 may include a cooler 211 for supplying hot or cold air to the room, a dehumidifier 212 for dehumidifying outside air, and a regeneration heater 213 for removing moisture in the dehumidifier 212 . Such an air conditioner 210 may be a conventional desiccant air conditioner.

The compressor 220 may compress the refrigerant into a high-temperature and high-pressure state to discharge the high-temperature and high-pressure refrigerant in one direction.

The four-way valve 230 means having four valve ports, and each port may be individually opened and closed according to the heating operation and the cooling operation of the heat pump 200 .

The hot water supply heat exchanger 240 is connected to the hot water supply pipe 360 and the first water supply pipe 350 , and may generate hot water for hot water supply through heat exchange between a high temperature refrigerant and low temperature water during a cooling operation.

The bypass pipe 250 is connected between the inlet and the outlet of the hot water supply heat exchanger 240 so that the refrigerant does not pass through the hot water supply heat exchanger 240 during the heating operation of the heat pump 200 .

The expansion valve 260 may be disposed on the outlet side of the hot water heat exchanger 240 .

The geothermal heat source heat exchanger 270 is connected to the geothermal heat source 290 so that the geothermal heat and the refrigerant exchange heat. The geothermal heat source heat exchanger 270 allows the refrigerant and the geothermal heat source to exchange heat during the heating operation of the heat pump 200, and during the cooling operation of the heat pump 200, the temperature stratified hot water supply tank 100 is overfilled with high-temperature water. It can be operated under the control of the central control unit.

The control unit may control a cooling operation and a heating operation of the heat pump 200 .

Hereinafter, a cooling operation and a heating operation of the heat pump 200 installed in each household or each floor in the heat pump system according to an embodiment of the present invention will be described.

Heating operation of heat pump

FIG. 3 is a view for explaining a heating operation process of the heat pump shown in FIG. 1 .

First, the high-temperature refrigerant discharged from the compressor 220 is supplied to the air conditioner 211 along the first refrigerant transfer path (①) connected from the second port 232 of the four-way valve 230 to the air conditioner 211. . By the high-temperature refrigerant supplied to the air conditioner 211 , the air conditioner 211 may supply warm air for heating into the room.

Then, it moves along the second refrigerant transfer path (②) connected from the air conditioner 211 to the hot water heater 240, and the hot refrigerant is bypassed so that the hot refrigerant is not supplied to the hot water heat exchanger 240 during the movement. It moves along the inflow and bypass pipe 250 into the pipe 250 and is supplied to the expansion valve 260 .

Then, it is supplied to the geothermal heat source heat exchanger 270 along the third refrigerant transfer path (③) connected from the expansion valve 260 to the geothermal heat source heat exchanger 270 . At this time, the refrigerant and the geothermal heat exchange heat in the geothermal heat source heat exchanger 270 .

Subsequently, the refrigerant is introduced into the third port 233 along the fourth refrigerant transfer path (④) connected from the geothermal heat source heat exchanger 270 to the third port 233 of the four-way valve 230 .

Then, the refrigerant is returned to the compressor 220 along the refrigerant return path ⑩ connected to the compressor 220 from the fourth port 234 of the four-way valve 230 .

Heat pump cooling operation

FIG. 4 is a view for explaining a cooling operation process of the heat pump shown in FIG. 1 .

First, the high-temperature refrigerant discharged from the compressor 220 is supplied to the regeneration heater 213 along the fifth refrigerant transfer path ⑤ connected from the third port 233 of the four-way valve 230 to the regeneration heater 213 . do. At this time, the regeneration heater 213 may remove moisture in the dehumidifier 212 by supplying high-temperature hot air toward the dehumidifier 212 by the high-temperature refrigerant.

Then, it moves along the sixth refrigerant transfer path ⑥ connected from the regeneration heater 213 to the geothermal heat source heat exchanger 270 . At this time, it passes through the geothermal heat source heat exchanger 270 without heat exchange with the geothermal heat source.

Then, it is supplied to the hot water heat exchanger 240 along the seventh refrigerant transfer path ⑦ connected from the geothermal heat source heat exchanger 270 to the hot water heat exchanger 240 . At this time, the high-temperature refrigerant is supercooled by exchanging heat with low-temperature water supplied through the first water supply pipe 350 connected to the heat pump 200 , and high-temperature water for hot water supply is generated. The generated hot water for hot water supply is supplied to the upper space of the temperature stratified hot water supply tank 100 through the round hot water pipe 360 connected to the heat pump 200 , and the hot water is filled in the temperature stratified hot water supply tank 100 .

Subsequently, the cooled refrigerant is supplied to the air conditioner 211 along the eighth refrigerant transfer path ⑧ connected from the hot water supply heat exchanger 240 to the air conditioner 211 . At this time, the air conditioner 211 may supply cool air to the room by the cooled refrigerant.

Subsequently, the refrigerant flows into the second port 232 along the ninth refrigerant transfer path ⑨ connected from the air conditioner 211 to the second port 232 of the four-way valve 230 .

Then, it is recovered to the compressor 220 along the refrigerant recovery path (10).

On the other hand, the hot water for hot water supply generated during the cooling operation of the heat pump 200 is supplied to the temperature stratified hot water supply tank 100. When it is difficult to supply low-temperature water because there is more low-temperature water than low-temperature water, the central control unit allows the heat pump 200 of each household or each floor to conduct heat exchange between the high-temperature refrigerant and the underground heat through the geothermal heat source heat exchanger 270 during the cooling operation. (200) can be controlled. For example, by transmitting a preset control signal to the heat pump 200 , the heat pump 200 may be controlled to operate the geothermal heat source heat exchanger 270 .

Here, a sensing means may be installed in the temperature stratified hot water supply tank 100 in order for the central control unit to determine the excessive filling of the high temperature water in the temperature stratified hot water supply tank 100 . For example, when a temperature sensor is installed in the temperature stratified hot water supply tank 100 and the temperature is higher than usual, it may be configured to determine that the hot water is overfilled.

In addition, when the high-temperature water is overfilled, the central control unit controls the three-way valve 420 to open the port connected to the high-temperature water branch pipe 380 so that the high-temperature water in the temperature-stratified hot water supply tank 100 can be transferred to the high-temperature water branch pipe ( 380) may be controlled to be supplied in the direction of the water supply pipe 410 . At this time, the hot water joins the hot water supplied along the water supply pipe 410 through the hot water branch pipe 380 to become lukewarm water, and the lukewarm water may be supplied to each household or each floor as living water.

On the other hand, the hot water used in each household or each floor of the apartment building is connected to the hot water supply pipe 310 while the hot water filled in the temperature stratified hot water supply tank 100 is transferred along the hot water supply pipe 310 . It is supplied through a hot water supply pipe 330 connected in households or each floor.

The amount of hot water in the temperature stratified hot water supply tank 100 may gradually decrease according to the repeated use of hot water in each household or each floor, and the central control unit determines that the amount of hot water has decreased, By determining the operation state of the heat pump 200 for each floor and the shortage of high-temperature water, it is possible to control the non-operational heat pump 200 to operate. At this time, when the non-operational heat pump 200 is operated, the heat pump 200 may generate hot water for hot water supply by performing a cooling operation, and the generated hot water is supplied to the temperature stratified hot water supply tank 100 . and can be filled.

Here, to detect the non-operating heat pump 200, a sensing means for measuring the hot water supply temperature or indoor temperature of each household or each floor is installed, and a detection signal is received from the sensing means to detect the heat pump for each household or each floor. (200) may be configured to determine whether to drive.

Using this heat pump system according to an embodiment of the present invention, the temperature stratified hot water supply tank 100 is commonly used in an apartment house or the entire building, and the high temperature water filled in the temperature stratified hot water supply tank 100 is used. Hot water supply pipe 330 and first water supply pipe 350 in each household or each floor to the high-temperature water supply pipe 310 and the low-temperature water supply pipe 340 installed in an apartment house or building for supply and low-temperature water supply and use. And because only the round hot water pipe 360 needs to be connected, installation of a hot water supply tank and piping equipment for each household or each floor is not required, so the piping equipment cost for the use of the heat pump 200 for each household or each floor is reduced, As a result, there is an advantage that the cost of installing a heat pump in an apartment house or building can be reduced.

In addition, since the hot water for hot water supply generated by each household or each floor is recovered to the temperature stratified hot water supply tank 100, it is possible to fill the hot water for hot water supply, so there is no need for a separate facility for generating hot water for hot water supply. , there is an advantage in that the cost for heating the hot water is reduced accordingly.

Meanwhile, the heat pump system according to an embodiment of the present invention may further include a first precooler 281 and a second precooler 282 for precooling the external air flowing into the air conditioner 210 .

The first precooler 281 may be connected to the geothermal heat source 290 and the geothermal heat source heat exchanger 270 to pre-cool the air in the air conditioner 210 through the circulating water circulating the geothermal heat source 290, and pre-cooling. Afterwards, the circulating water may be recovered to the geothermal heat source 290 through the geothermal heat source heat exchanger 270 .

The second precooler 282 may be connected to a water source. For example, when water is supplied by being connected to the water supply pipe 410 , the air in the air conditioner 210 may be pre-cooled, and after pre-cooling, the water may be recovered to the water supply pipe 410 or the water storage tank 500 .

Through the installation of the first precooler 281 and the second precooler 282 , the cooling operation of the air conditioner 210 for indoor cooling may be accelerated.

On the other hand, the water and air dehumidification cooling heat pump system capable of increasing cooling and hot water supply performance by utilizing a temperature stratified hot water supply tank according to an embodiment of the present invention is provided on the surface of the outer case accommodating the heat exchanger of the heat pump 200 . A color-changing layer may be applied.

In the temperature change layer, two or more temperature change materials that change color when the temperature is higher than a predetermined temperature are applied to the surface of the outer case of the heat pump 200 and are separated into two or more sections according to the temperature change. The change can be determined, and a protective film layer for preventing the temperature change layer from being damaged may be applied on the temperature change layer.

Here, the temperature change layer may be formed by applying a color change material having a color change temperature of 40° C. or higher and 60° C. or higher, respectively. The temperature discoloration layer changes color according to the temperature of the outer case of the heat pump 200 which is indirectly heated as the internal temperature increases by the heater unit to detect a change in the temperature of the outer case of the heat pump 200. . The temperature change layer reacts according to the temperature change of the outer case of the heat pump 200 , and as a result, the temperature change of the outer case of the heat pump 200 can be detected.

The temperature-changing layer may be formed by applying a temperature-changing material, which changes color when the temperature reaches a certain temperature or higher, on the surface of the outer case of the heat pump 200 . In addition, the thermochromic layer generally has a microcapsule structure of 1 to 10 μm, and can exhibit colored and transparent colors due to bonding and separation according to the temperature of the electron donor and the electron acceptor in the microcapsule.

In addition, the color change layer has a fast color change, and may have various color change temperatures such as 40° C., 60° C., 70° C., 80° C., and the like, and the color change temperature can be easily adjusted in various ways. Various types of thermochromic materials may be used for the thermochromic layer according to the principles of molecular rearrangement of organic compounds and spatial rearrangement of atomic groups.

To this end, the temperature-changing layer is preferably formed to be separated into two or more sections according to a change in temperature by applying two or more temperature-changing materials having different color-changing temperatures. The temperature discoloration layer preferably uses a temperature discoloration material having a relatively low discoloration temperature and a temperature discoloration material having a relatively high discoloration temperature, and more preferably a discoloration temperature of 40°C or higher and 60°C or higher. A thermochromic layer may be formed using a thermochromic material.

Through this, it is possible to check the temperature change of the outer case of the heat pump 200, so that the temperature change of the outer case of the heat pump 200 can be detected, and accordingly, whether the current heat pump 200 is in a normal driving state; It has the advantage of being able to easily check whether it is overheated with the naked eye.

In addition, the protective film layer is applied on the temperature-changing layer to prevent damage to the temperature-changing layer due to external impact. It is preferable to use a transparent coating material with branches.

On the other hand, by utilizing the temperature stratified hot water supply tank according to an embodiment of the present invention, it is possible to effectively achieve the prevention and removal of contaminants from the three-way valve 420 of the water and air dehumidification cooling heat pump system capable of increasing cooling and hot water supply performance. An antifouling coating layer made of a composition for antifouling coating may be applied so as to be applied thereto.

The antifouling coating composition contains cocoamphodiacetate and alkyl glycol ether in a molar ratio of 1:0.01 to 1:2, and the total content of cocoamphodiacetate and alkyl glycol ether is 1 to 10% by weight based on the total aqueous solution. am.

The molar ratio of cocoamphodiacetate and alkyl glycol ether is preferably 1:0.01 to 1:2. When the molar ratio is out of the above range, the applicability on the three-way valve 420 is lowered or moisture adsorption on the surface after application is increased. Accordingly, there is a problem in that the coating film is removed.

The cocoamphodiacetate and alkyl glycol ether are preferably 1 to 10% by weight in the entire aqueous solution of the composition, and if it is less than 1% by weight, there is a problem in that the applicability on the three-way valve 420 is lowered, and if it exceeds 10% by weight, it is applied Crystal precipitation is likely to occur due to an increase in the film thickness.

On the other hand, as a method of applying the present antifouling coating composition on the three-way valve 420, it is preferable to apply by a spray method. In addition, the final coating film thickness on the three-way valve 420 is preferably 550 ~ 2000Å, more preferably 1100 ~ 1900Å. If the thickness of the coating film is less than 550 Å, there is a problem in that it is deteriorated in the case of high-temperature heat treatment, and if it exceeds 2000 Å, there is a disadvantage that crystal precipitation on the coated surface is easy to occur.

In addition, the present antifouling coating composition can be prepared by adding 0.1 mol of cocoamphodiacetate and 0.05 mol of alkyl glycol ether to 1000 ml of distilled water and then stirring.

On the other hand, the surface of the temperature stratified hot water supply tank 100 of the water and air dehumidification cooling heat pump system capable of increasing cooling and hot water supply performance by utilizing the temperature stratified hot water supply tank according to an embodiment of the present invention prevents corrosion of the metal surface In order to do this, an anti-corrosion coating layer may be applied.

The coating material of this anti-corrosion coating layer is triethanolamine 15% by weight, indiazole 25% by weight, hafnium 20% by weight, molybdenum emulsified (MoS2) 10% by weight, titanium oxide (TiO2) 15% by weight, propionamide 15% by weight. It can be configured to have a coating thickness of 8 μm.

Triethanolamine, indiazole, and propionamide act as corrosion protection and discoloration protection.

Hafnium is a transition metal element with corrosion resistance, and serves to have excellent waterproof and corrosion resistance.

Molybdenum emulsified serves to impart lubricity and lubricity to the surface of the coating film.

Titanium oxide is added for the purpose of fire resistance and chemical stability.

The reason why the ratio of the constituents and the coating thickness are numerically limited as described above is that the present inventors repeatedly failed several times and analyzed through the test results. As a result, the optimal anti-corrosion effect was exhibited at the above ratio.

On the other hand, a high temperature water supply pipe coupled to the temperature stratified hot water supply tank 100 of the water and air dehumidification cooling heat pump system capable of increasing cooling and hot water supply performance by utilizing the temperature stratified hot water supply tank according to an embodiment of the present invention 310, In order to improve the coupling force for preventing leakage of the high-temperature water recovery pipe 320 and the low-temperature water supply pipe 340, the high-temperature water supply pipe 310, the high-temperature water recovery pipe 320, and the low-temperature water supply pipe 340 are connected to each of the coupling parts. A bonding enhancer may be applied.

The bonding enhancer comprises 60 parts by weight of water, 15 parts by weight of acrylonitrile, 17 parts by weight of N-butoxy-methylacrylamide, 5 parts by weight of N-acyl sarcosinate, 2 parts by weight of ammonium peroxide, and 1 part by weight of a buffer. can

Acrylonitrile and N-butoxy-methylacrylamide are added to improve adhesion, flexibility, water resistance, etc., and N-acyl sarcosinate acts as a surfactant.

The reason for limiting the constituent materials and constituents as described above and limiting the numerical value of the mixing ratio is that the present inventor repeatedly failed several times and analyzed the test results to obtain the optimal effect from the constituents and numerical limiting ratios. indicated.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

100: temperature stratified hot water supply tank 200: heat pump
310: high-temperature water supply pipe 320: high-temperature water recovery pipe
330: hot water supply pipe 340: low temperature water supply pipe
350: first water supply pipe 360: round hot water pipe
370: geothermal heat source connection pipe 380: hot water branch pipe
410: water supply pipe 420: three-way valve
430: second water supply pipe 500: water tank

Claims (3)

a temperature stratified hot water supply tank 100 in which the upper space above the low-temperature water is filled with high-temperature water in a state in which the low-temperature water is filled in the lower space;
The heat pump 200 is installed for each household or each floor of the apartment building, and generates hot water for heating and cooling and hot water supply;
a hot water supply pipe 310 for supplying hot water in the temperature stratified hot water supply tank 100 in one direction;
a high-temperature water recovery pipe 320 connected to the high-temperature water supply pipe 310 to recover high-temperature water;
a hot water supply pipe 330 branched from the hot water supply pipe 310 to supply hot water to each household or each floor of a building;
a low-temperature water supply pipe 340 for supplying low-temperature water in the temperature-stratified hot water supply tank 100 in the direction of the heat pump 200;
a first water supply pipe 350 branched from the low temperature water supply pipe 340 and connected to the heat pump 200 for supplying low temperature water to each household or each floor of a building;
For hot water supply generated by exchanging heat with the low-temperature water and high-temperature refrigerant in the heat pump 200 branched from the high-temperature water recovery pipe 320 and connected to the heat pump 200, installed on each floor of each household or building Hwantang pipe 360 for recovering hot water;
a geothermal heat source connection pipe 370 connected between the heat pump 200 and the geothermal heat source 290;
a water supply pipe 410 for supplying constant water therein from the water storage tank 500 in which constant water is stored;
A hot water branch pipe (380) connected between the hot water supply pipe (310) and the water supply pipe (410), and supplies a part of the hot water supplied through the hot water supply pipe (310) to the water supply pipe (410) ;
a three-way valve 420 installed at an intersection where the hot water branch pipe 380 is connected to the water supply pipe 410 to open and close the hot water branch pipe 380;
a second water supply pipe 430 branching from the water supply pipe 410 and supplying tepid water generated by the merging of hot water and constant water to each household or each floor of a building; and
It controls the supply of the high-temperature water and the low-temperature water, the opening and closing of the three-way valve 420, and the operation of the heat pump 200, and the operation state of the heat pump 200 for each household or each floor and the shortage of the high temperature water. and a central control unit for controlling the non-operational heat pump 200 to generate hot water for hot water supply when the capacity of the hot water is reduced than the reference amount.
A water/air dehumidification cooling heat pump system that can increase cooling and hot water supply performance by using a temperature stratified hot water supply tank.
The method of claim 1,
The heat pump 200,
an air conditioner 210 including a cooler 211 for supplying hot or cold air to the interior, a dehumidifier 212 for dehumidifying outside air, and a regeneration heater 213 for removing moisture in the dehumidifier 212;
Compressor 220 for discharging high-temperature refrigerant;
a four-way valve 230 connected to the outlet of the compressor 220 and configured to switch a direction in which the high-temperature refrigerant flows according to a cooling operation and a heating operation;
a hot water supply heat exchanger 240 connected to the round hot water pipe 360 and the first water supply pipe 350 and generating hot water for hot water supply through heat exchange between a high temperature refrigerant and low temperature water during a cooling operation;
a bypass pipe 250 connected between the inlet and the outlet of the hot water supply heat exchanger 240 to bypass the refrigerant so as not to pass through the hot water supply heat exchanger 240 ;
an expansion valve 260 disposed on the outlet side of the hot water supply heat exchanger 240;
a geothermal heat source heat exchanger 270 connected to the geothermal heat source 290 to exchange heat between the geothermal heat and the refrigerant;
a control unit (not shown) for controlling the cooling operation and the heating operation of the heat pump 200;
During the heating operation, the high-temperature refrigerant discharged from the compressor 220 is transferred from the second port 232 of the four-way valve 230 to the cooler 211 along the first refrigerant transfer path (①). 211), and then introduced into the bypass pipe 250 and the bypass pipe ( 250), it is supplied to the expansion valve 260, and then along the third refrigerant transfer path (③) connected from the expansion valve 260 to the geothermal heat source heat exchanger 270. The third port 233 is supplied to 270, and then along the fourth refrigerant transfer path ④ connected from the geothermal heat source heat exchanger 270 to the third port 233 of the four-way valve 230. and then operated in a cycle in which the refrigerant is returned to the compressor 220 along the refrigerant return path ⑩ connected from the fourth port 234 of the four-way valve 230 to the compressor 220;
During the cooling operation, the high-temperature refrigerant discharged from the compressor 220 is regenerated along the fifth refrigerant transfer path ⑤ connected from the third port 233 of the four-way valve 230 to the regeneration heater 213 . It is supplied to the heater 213, and then moves along the sixth refrigerant transfer path ⑥ connected from the regeneration heater 213 to the geothermal heat source heat exchanger 270, but heat exchanges the geothermal heat source without heat exchange with the geothermal heat source. After passing through the unit 270, it is supplied to the hot water supply heat exchanger 240 along the seventh refrigerant transfer path (⑦) connected from the geothermal heat source heat exchanger 270 to the hot water supply heat exchanger 240, and then The refrigerant is supplied to the cooler 211 along the eighth refrigerant transfer path ⑧ connected from the hot water supply heat exchanger 240 to the cooler 211, and then from the cooler 211 to the four-way valve 230. It flows into the second port 232 along the ninth refrigerant transfer path (⑨) connected to the 2 port 232, and is then returned to the compressor 220 along the refrigerant return path (⑩).
During the cooling operation, when the refrigerant exchanges heat in the hot water supply heat exchanger 240 , hot water for hot water supply is generated, and the generated hot water for hot water supply is transferred along the hot water supply pipe 360 and the hot water recovery pipe 320 . Characterized in that it is supplied to the temperature stratified hot water supply tank (100),
A water/air dehumidification cooling heat pump system that can increase cooling and hot water supply performance by using a temperature stratified hot water supply tank.
3. The method of claim 2,
When the temperature stratified hot water supply tank 100 is overfilled with high-temperature water, the central control unit heats the heat pump ( 200), and by opening the port connected to the high-temperature water branch pipe 380 of the three-way valve 420, the high-temperature water in the temperature-stratified hot water supply tank 100 passes through the high-temperature water branch pipe 380. Characterized in controlling to be supplied in the direction of the water supply pipe 410,
A water/air dehumidification cooling heat pump system that can increase cooling and hot water supply performance by using a temperature stratified hot water supply tank.

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