KR20100123170A - Water circulation system and method for controlling the same - Google Patents

Abstract

PURPOSE: The water circulation system and control method. In the process where header and refrigerant pipe are welded, the damage of header is minimized. CONSTITUTION: The water circulation system(1) comprises the heat pump, the indoor heat transfer member, the boiler part(6), the contact detector, the contact unit. It is composed of the compressor(21), outdoor heat exchanger(23), bulge(24), indoor heat exchanger(31) performing the heat exchange between refrigerant and the water and the heat pump is proceed the refrigerant cycle.

Description

Water circulation system and method for controlling the same

The present invention relates to a water circulation system and a control method thereof.

Conventionally, indoor air conditioning is performed by an air conditioner using a refrigerant cycle, and hot water supply is performed by a boiler having a separate heating source.

In more detail, the air conditioner includes an outdoor unit installed outdoors and an indoor unit installed indoors. The outdoor unit includes a compressor for compressing a refrigerant, an outdoor heat exchanger for heat exchange between the refrigerant and outdoor air, and a pressure reducing device for expanding the refrigerant, and the indoor unit includes an indoor heat exchanger for heat exchange between the refrigerant and indoor air. At this time, any one of the outdoor heat exchanger and the indoor heat exchanger acts as a condenser and the other as an evaporator, so that the compressor, outdoor heat exchanger, pressure reducing device, and indoor heat exchanger perform a refrigerant cycle.

The boiler generates heat using oil, gas, or electricity to heat the water to supply hot water or perform floor heating.

The present invention is to provide a water circulation system and a control method thereof that is easy to switch the operating state.

In addition, the present invention is to provide a water circulation system and a control method thereof that can selectively use a heating source.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

Embodiments of the water circulation system according to the present invention proposed as described above, the heat pump is composed of a compressor, an outdoor heat exchanger, an expansion unit and an indoor heat exchanger that exchanges water and a refrigerant; An indoor heat transfer unit through which water discharged from the indoor heat exchanger flows for indoor hot water supply or air conditioning; A boiler unit connected to both ends of the indoor heat transfer unit to heat water discharged from the indoor heat transfer unit; And a contact sensing unit for receiving a contact signal for selectively flowing the water flowing through the indoor heat transfer unit to any one of the heat pump and the boiler unit.

In addition, another embodiment of the water circulation system according to the present invention, the outdoor unit is installed outdoors, including a compressor, an outdoor heat exchanger and an expansion unit; An indoor unit installed indoors and including a water refrigerant exchanger connected to the compressor, an outdoor heat exchanger, and an expansion unit to form a closed cycle of a refrigerant cycle; Hot water supply unit for supplying hot water, the hot water flowing through the refrigerant and heat exchanger in the water refrigerant exchanger; For heating and cooling the room, the cooling and heating unit for the water that is heat-exchanged with the refrigerant in the water refrigerant exchanger; A boiler unit connected to both ends of each of the hot water supply unit and the air conditioning unit to heat water flowing at least one of the hot water supply unit and the air conditioning unit; And a contact sensing unit to which a contact signal for selectively operating the heat pump and the boiler unit is input.

In addition, the control method of the water circulation system according to the present invention includes the steps of contacting the contact unit to the contact sensing unit to receive a signal for switching the operation mode; And switching the operation mode.

As described above, according to the heat exchanger and the manufacturing method thereof, the refrigerant pipe is connected while the auxiliary member is attached to the header of the heat exchanger, so that the header is damaged in the process of joining the header and the refrigerant pipe. This phenomenon can be minimized.

In addition, since the auxiliary member is attached to the header, the thickness of the header adjacent to the portion to which the refrigerant pipe is connected becomes thicker, and thus the strength may be further reinforced.

Hereinafter, a heat exchanger according to the present invention and a manufacturing method thereof will be described in more detail with reference to the accompanying drawings.

1 is a view showing an embodiment of the water circulation system according to the present invention, Figure 2 is a view showing a signal detection unit of the contact method in an embodiment of the water circulation system according to the present invention, Figure 3 is a water according to the present invention Control configuration showing control signal flow in an embodiment of the circulatory system.

Referring to FIG. 1, a water circulation system 1 according to an embodiment of the present invention includes a heat pump through which a refrigerant cycle is performed, and an indoor heat transfer unit through which water that is heat-exchanged with the refrigerant for hot water supply and cooling and heating of a room is provided. And a boiler part 6 connected to both ends of the indoor heat transfer part to heat the water flowing in the indoor heat transfer part.

In detail, the heat pump includes a compressor 21 for compressing a refrigerant at a high temperature and high pressure, a four-way valve 22 for adjusting a flow direction of the refrigerant discharged from the compressor 21, and the four directions. The water-refrigerant heat exchanger (31) and the water refrigerant exchanger (31) for exchanging heat with the high temperature and high pressure refrigerant passing through the valve (22) along the water pipe of the indoor heat transfer unit An expansion part 24 for allowing the refrigerant to pass through to expand at a low temperature and a low pressure and an outdoor heat exchanger 23 for allowing the refrigerant passing through the expansion part to heat exchange with outdoor air. The compressor 21, the four-way valve 22, the water refrigerant heat exchanger 31, the expansion part 24, and the outdoor heat exchanger 23 are connected by the refrigerant pipe 25 to form a refrigerant cycle closed circuit. .

On the other hand, the water circulation system 1 includes an outdoor unit 2 including a refrigerant cycle, an indoor unit 3 for exchanging water with a refrigerant which is phase-changed along the refrigerant cycle, and hot water in the room. Hot water supply part (5) consisting of a hot water supply part (4) connected to the indoor unit (3) for supply, and a water pipe (connected to the indoor unit (3)) for cooling the room And a boiler part 6 for heating the water flowing in the hot water supply part 4 and the air-conditioning part 5.

Here, the compressor 21, the four-way valve 22, the expansion unit 24, and the outdoor heat exchanger 23 included in the heat pump are installed in the outdoor unit 2 located outdoors. When the outdoor unit 2 is operated in the cooling mode, the outdoor heat exchanger 23 performs the function of the evaporator, and when the outdoor unit 2 is operated in the heating mode, the outdoor unit 2 performs the function of the condenser. In addition, temperature sensors TH1 and TH2 may be installed in the inlet refrigerant pipe and the outlet refrigerant pipe of the water refrigerant heat exchanger 31, respectively. Hereinafter, the description will be limited to the operation in the heating mode.

In addition, the water refrigerant heat exchanger 31 included in the heat pump is installed in the indoor unit 3 located indoors. In addition, the indoor unit 3 is mounted on the water refrigerant heat exchanger 31 and a water pipe extending from the outlet side of the water refrigerant heat exchanger 31 to detect a flow of water. (32), an expansion tank (33) branched at a point spaced apart from the flow switch (32) in the direction of water flow, and water extending from the outlet side of the water refrigerant heat exchanger (31). An end of the pipe is inserted, and a water collecting tank 34 provided with an auxiliary heater 35 therein, and a water pump 36 provided at a point of an outlet pipe of the water collecting tank 34. Is installed.

In more detail, the water refrigerant heat exchanger 31 is a device in which the refrigerant flowing along the refrigerant cycle closed circuit and the water flowing along the water pipe heat exchange, for example, a plate heat exchanger is applicable. In the water-cooling heat exchanger 31 in the heating mode, heat (QH) is transferred from the high temperature and high pressure gas refrigerant passing through the compressor 21 to the water flowing along the water pipe. Water introduced into the water refrigerant heat exchanger 31 is lukewarm through a hot water supply process or a heating process. In addition, temperature sensors TH3 and TH4 may be installed in the inlet and outlet pipes of the water refrigerant heat exchanger 31, respectively.

In addition, the expansion tank 33, while passing through the water refrigerant heat exchanger 31 performs a buffer function that absorbs when the volume of the heated water is expanded to an appropriate level or more. The expansion tank 33 contains a diaphragm to move in response to a volume change of water in the water pipe. The expansion tank 33 is filled with nitrogen gas.

In addition, the collection tank 34 is a container in which water passing through the water refrigerant heat exchanger 31 is collected. In addition, an auxiliary heater 35 is mounted inside the collection tank 34 to selectively operate when the amount of heat intake through the defrosting operation or the water refrigerant heat exchanger 31 does not reach the required amount of heat. In addition, an air vent 343 is formed at an upper side of the collecting tank 34 to discharge the superheated air present in the collecting tank 34. In addition, a pressure gauge 341 and a relief valve 342 may be provided at one side of the collecting tank 35 so that the pressure inside the collecting tank 35 may be properly adjusted. For example, when the water pressure inside the collection tank 35 displayed through the pressure gauge 341 is excessively high, the relief valve 342 may be opened so that the pressure in the tank may be properly adjusted. In addition, a temperature sensor TH5 for measuring the temperature of water may be mounted on one side of the collecting tank 34.

In addition, the water pump 36 pumps the water discharged through the water pipe extending from the outlet side of the collecting tank 34 so as to be supplied to the hot water supply unit 4 and the cooling and heating unit 5.

In addition, a control box 38 for storing various electrical components is mounted on one side of the indoor unit 3, and a control panel 37 is provided on the front of the indoor unit 3. In detail, the control panel 37 may be provided with a display unit such as an LCD panel and various input buttons. In addition, operation information such as the operating state of the indoor unit 3 or the temperature of water passing through the indoor unit 3, and other menus may be checked through the display unit.

On the other hand, the indoor heat transfer unit includes the hot water supply unit 4 and the cold and hot plate (5).

First, the hot water supply unit 4 is a part that warms and supplies water required for a work such as washing or washing dishes. In detail, at a point spaced apart from the water pump 36 in the direction of water flow, a three-way valve 71 for controlling the flow of water is provided. The three-way valve 71 is a direction switching valve for allowing the water pumped by the water pump 36 to flow into the hot water supply unit 4 or the cooling / heating unit 5. Accordingly, the hot water supply pipe 48 extending to the hot water supply unit and the air conditioning pipe 53 extending to the air conditioning unit 5 are connected to the outlet side of the three-way valve 71. In addition, the water pumped by the water pump 36 is selectively flowed to either the hot water supply pipe 48 or the air-conditioning pipe 53 under the control of the three-way valve 71.

The hot water supply unit 4 includes a hot water tank 41 for storing water supplied from the outside and allowing the stored water to be heated, and an auxiliary heater 42 provided inside the hot water tank 41. In addition, an auxiliary heat source for supplying heat to the hot water tank 41 may be further added according to the installation form. As the auxiliary heat source that can be presented, a heat storage tank 43 using solar heat is possible. In addition, one side of the hot water supply unit 4 is provided with an inlet 411 for the introduction of cold water, and a water outlet 412 for discharging the heated water.

In detail, a part of the hot water supply pipe extending from the three-way valve 71 is introduced into the hot water tank 41 to heat the water stored in the hot water tank 41. That is, heat is transferred from the hot water flowing along the inside of the hot water supply pipe 48 to the water stored in the hot water tank 41. And, in certain cases, the auxiliary heater 42 and the auxiliary heat source may operate to supply additional heat. For example, it may operate when the water needs to be heated in a short time, such as when the user needs a lot of hot water to take a bath. In addition, one side of the hot water tank 41 may be equipped with a temperature sensor (TH6) for detecting the temperature of the water.

According to an embodiment, the water outlet 412 may be connected to a hot water discharge device such as a shower 45 or a home appliance such as a humidifier 46. When the heat storage tank 43 using solar heat is used as the auxiliary heat source, the heat storage pipe 47 extending from the heat storage tank 43 may be inserted into the hot water tank 41. In addition, an auxiliary pump 44 for controlling the flow rate inside the heat storage pipe closed circuit is mounted on the heat storage pipe 47, and a direction switching valve VA for controlling the flow direction of water in the heat storage pipe 47 is mounted. Can be. In addition, a temperature sensor TH7 for measuring the temperature of the water may be mounted on any one side of the heat storage pipe 47.

The auxiliary heat source structure, such as the heat storage unit using the solar heat as shown above, is not limited to the embodiments shown, it will be found that it can be mounted in different positions in various forms.

On the other hand, in the air-conditioning unit 5, a floor air-conditioning unit 51 formed by embedding a part of the air-conditioning piping 53 on the floor of the room, and branched from any point of the air-conditioning piping 53, the floor air-conditioning unit Air cooling and heating unit 52 connected in parallel with the 51 is included.

In detail, the floor heating and cooling unit 51 may be buried in the form of a meander line (meander line) on the indoor floor as shown. In addition, the air-conditioning unit 52 may be a fan coil unit or a radiator. In addition, a part of the air-conditioning pipe 54 branched from the air-conditioning pipe 53 is provided to the air-conditioning unit 52 as a heat exchange means. At the point where the air cooling and heating pipe 54 is branched, flow path switching valves 55 and 56 such as three-way valves are installed, and the refrigerant flowing along the cooling and heating pipe 53 flows in the floor heating and heating unit 51 and the air. Can be divided into the air-conditioning unit 52 or only flow to either side.

In addition, an end portion of the hot water supply pipe 48 extending from the three-way valve 71 is laminated at a point spaced apart from the outlet end of the air cooling and heating pipe 54 in the direction of water flow. Therefore, in the hot water supply mode, the refrigerant flowing along the hot water supply pipe 48 is introduced into the water refrigerant heat exchanger 31 after being combined again with the air conditioning pipe 53.

Here, the check valve (V) may be installed at a point requiring the reverse flow cutoff, such as a point where the hot water supply pipe 48 is joined with the air-conditioning pipe 53, to prevent the back flow of water. In the same context, in addition to the method of installing the flow path switching valve 56, the check valve may be installed at the outlet end of the air-conditioning pipe 54 and the outlet end of the bottom air-conditioning unit 51, respectively.

On the other hand, the boiler 6 is connected to the refrigerant pipes corresponding to both ends of the hot water supply unit 4 and the heating and cooling unit 5, respectively. In detail, the boiler part 6 includes a heating part 61 for flowing water flowing from at least one of the hot water supply part 4 and the cooling and heating part 5, and the water flowing through the heating part 61. A heating source 62 for heating the water and a pump 63 for forcibly flowing the water.

In this case, the heating source 61 may be various devices that generate heat, such as an electric heater or a gas burner. In addition, the heating unit 61 may be in various forms such as, for example, a tank in which water is temporarily stored or a pipe in which water continuously flows.

Moreover, the outlet side of the said hot water supply part 4 and the air-conditioning part 5 is the point corresponding to the outlet side of the said hot water supply part 4 and the air-conditioning part 5, and the inlet side of the boiler part 6. A three way valve 72 connected to the refrigerant pipe, the indoor unit 3, and the boiler unit 6 is provided. The three-way valve 72 also opens and closes the refrigerant pipe so that water discharged from the hot water supply unit 4 and the cooling and heating unit 50 flows selectively to the indoor unit 3 or the boiler unit 6.

Meanwhile, referring to FIGS. 1 and 2, the water circulation system 1 includes a contact sensing unit 82 to which a signal for changing an operation of the water circulation system 1 is input, and the contact sensing unit 82. It further comprises a contact unit 81 that can be selectively contact ().

In detail, the contact detecting unit 82 is installed at one side of the indoor unit. Of course, the contact detecting unit 82 may be installed in various places such as the air-conditioning unit, the hot water supply unit or the boiler unit within an easy access range of the user. In addition, the contact detecting unit 82 is provided with a coupling portion 820 for coupling the contact unit 81. In this case, the contact unit 81 may be maintained in contact with the contact sensing unit 82 by being coupled to the coupling unit 820. In addition, the contact detection unit 82 generates a signal different from the signal generated by the contact detection unit 82 in a state where the contact unit 81 is coupled. .

In addition, the contact unit 81 is separated from the contact detecting unit 82 so that a user can freely carry and store it. The contact unit 81 may be in various forms that a user can easily carry and store, such as a card, a rod, and an accessory. However, the contact unit 81 may be in contact with the contact sensing unit 82, thereby varying the signal generated by the contact sensing unit 82. Like the contact unit 81, a method that can serve as a switch by being in contact with the contact sensing unit 82 is called a dry contact method.

Meanwhile, referring to FIG. 3, the water circulation system 1 includes a control unit 83 to which a signal is transmitted from the contact detecting unit 82, and a pump unit 84 to which a command signal of the control unit 83 is transmitted. ) And the valve unit 85 is further included.

Here, the pump unit 84 includes various pumps provided in the water circulation system 1, such as the pump 36 of the indoor unit or the pump 63 of the boiler. The valve unit 85 is, for example, the inlet three-way valve 71 and the outlet three-way valve 72 of the hot water supply unit 4 and the air-conditioning unit 5, and the like. It includes various valves provided in). Accordingly, the pumps 36 and 63 and the valves 71 and 72 can be selectively operated according to the command of the controller.

Hereinafter, the flow of water occurring in the water circulation system 1 will be described by dividing the operation mode.

4 is a view showing the operation in the heat pump interlocking mode in the embodiment of the water circulation system 1 according to the present invention, Figure 5 is a boiler interlocking mode in the embodiment of the water circulation system 1 according to the present invention This figure shows how it works.

4 and 5, the water circulation system 1 includes a heat pump interlocking mode in which water flowing through the indoor heat transfer unit exchanges heat with a refrigerant of the heat pump, and water flowing through the indoor heat transfer unit includes the boiler. It can be selectively operated in a boiler interlocking mode heated by the section 6.

In detail, as shown in FIG. 4, when the water circulation system 1 operates in the heat pump interlocking mode, water that has passed through at least one of the hot water supply unit 4 and the air conditioning unit 5 is transferred to the indoor unit 3. Flows into). Water introduced into the indoor unit 3 is exchanged with the refrigerant while passing through the water refrigerant exchanger 31. In this case, the water may be heated or cooled according to the operation mode of the heat pump. More specifically, the water is heated by the refrigerant when the heat pump is operating in the heating mode, the water is cooled by the refrigerant when the heat pump is operating in the cooling mode.

Then, the water passing through the water refrigerant exchanger 31 is discharged to the outside of the indoor unit (3), and then flows back into at least one of the hot water supply unit 4 and the air-conditioning unit (5). In this case, the direction in which the water discharged from the indoor unit 3 flows may be controlled by the valve 71.

Next, as shown in FIG. 5, when the water circulation system 1 operates in the boiler interlocking mode, water passing through at least one of the hot water supply unit 4 and the heating and cooling unit 5 passes through the boiler unit ( 6) flows into. In addition, the water introduced into the boiler unit 6 absorbs heat from the heating source 62 while passing through the heating units 61 and 61. That is, water flowing through the heating unit 61 is heated by the heating source 62.

The water heated by the heating source 62 is discharged from the boiler part 6, and then flows back into at least one of the hot water supply part 4 and the air-conditioning part 5. In this case, the direction in which the water discharged from the boiler unit 6 flows may be controlled by the valve 71.

EMBODIMENT OF THE INVENTION Hereinafter, the control method of the Example of the water circulation system 1 by this invention is demonstrated in detail with reference to attached drawing.

6 is a flowchart showing a control method of the embodiment of the water circulation system 1 according to the present invention.

Referring to FIG. 6, first, when the operation of the water circulation system 1 is started, the contact detecting unit 82 detects whether the contact unit 81 is in contact with each other (S1).

When the contact unit 81 is in contact with the contact sensing unit 82, that is, when a contact signal by the contact unit 81 is input (S2), the controller 83 is configured to provide the water circulation system ( 1) controls to operate or switch to the heat pump interlocking mode (S3).

In more detail, when a contact signal by the contact unit 81 is input, only the pump 36 of the indoor unit 3 is operated, and the valve 72 is the hot water supply unit 4 and the heating and cooling unit 5. The water discharged from at least one of the () is controlled to flow into all the indoor unit (3) does not flow into the boiler (6).

However, when the heat detection unit 82 has already been operated in the heat pump interlocking mode before the contact unit 81 is detected by the contact detection unit 82, the existing operating state is maintained. In addition, when the contact sensing unit 82 is operated in the boiler interlocking mode before the contact unit 81 is detected to be in contact, the operation of the pump 63 of the boiler unit 6 is stopped. At the same time, the operation of the pump 36 of the indoor unit 3 is started, and at the same time, the valve 72 has all of the water discharged from at least one of the hot water supply unit 4 and the heating and cooling unit 5. 3) is switched to flow into.

However, when the contact unit 81 is not in contact with the contact detecting unit 82, that is, when there is no input of a contact signal by the contact unit 81 (S2), the control unit 83 is the water. The circulation system 1 controls to operate or switch to the boiler interlocking mode (S5).

In more detail, when there is no input of the contact signal by the contact unit 81, only the pump 63 of the boiler unit 6 is operated, and the valve 72 is the hot water supply unit 4 and the heating and cooling unit. Water discharged from at least one of (5) is controlled not to flow into the indoor unit 3 but to flow all into the boiler unit 6.

However, when the contact detection unit 82 has already been operated in the boiler interlocking mode before the contact unit 81 is detected by the contact, the existing operating state is maintained as it is. In addition, when the contact detecting unit 82 is operated in the heat pump interlocking mode before the contact unit 81 is contacted with each other, the operation of the pump 63 of the indoor unit 3 is stopped. At the same time, the operation of the pump 36 of the boiler unit 6 is started, and at the same time, the valve 72 has all the water discharged from at least one of the hot water supply unit 4 and the heating and cooling unit 5. It is switched to flow into the unit (6).

Next, as long as there is no input of a signal for stopping the operation of the water circulation system 1 through the input unit (S4), whether the contact unit 81 is detected by the contact detecting unit 82 is detected. The process is performed again from the step (S1). However, when a signal for stopping the operation of the water circulation system 1 is input (S4), the operation of the water circulation system 1 is stopped (S6).

As a result, when the contact unit 81 is in contact with the contact sensing unit 82, that is, the state in which the water circulation system 1 is continuously operated in the heat pump interlocking mode, the contact unit When 81 is kept separated from the contact sensing unit 82, the water circulation system 1 is continuously operated in the boiler interlock mode. Therefore, the user normally uses the water circulation system 1 with the contact unit 81 coupled to the contact sensing unit 82, for example, when the heating capacity is drastically reduced or when defrost is needed. When it is necessary to operate in the boiler interlocking mode as described above, the operation state of the water circulation system 1 may be changed by separating the contact unit 81 from the contact detecting unit 82.

However, a state in which the contact unit 81 is coupled to and separated from the contact detecting unit 82 and the corresponding heat pump interlocking mode and the boiler interlocking mode may be opposite to each other. That is, in the state where the contact unit 81 is coupled to the contact sensing unit 82, the water circulation system 1 is operated in the boiler interlocking mode, and the contact unit 81 is the contact sensing unit 82. It is also possible to operate the water circulation system 1 in the heat pump interlocking mode in a state separated from

According to the water circulation system 1, there is an advantage that the heat pump and the boiler part 6 can be selectively used. In detail, when the water circulation system 1 is more accurately installed when the outdoor unit is installed in an extreme cold region, the heating efficiency by the heat pump can be drastically reduced. Alternatively, in order to defrost the outdoor heat exchanger, it may be necessary to reverse the flow direction of the refrigerant flowing through the refrigerant cycle closed circuit of the heat pump.

In this case, the hot water supply and heating in the room can be smoothly maintained in such a manner that the water circulation system 1 is operated in the boiler interlock mode. In more detail, when the water circulation system 1 is operated in the boiler interlocking mode, all the water flowing at least one of the hot water supply unit 4 and the heating and cooling unit 5 is introduced into the boiler unit 6, Heated by the heating source 62 and then flows back into the hot water supply unit 4 and the cooling and heating unit (5). That is, the water flowing in at least one of the hot water supply unit 4 and the cooling and heating unit 5 does not flow into the indoor unit 3 more accurately, the water refrigerant exchanger 31, so that the heat pump is in a cooling mode. Even if it is operated as an advantage that the hot water supply and heating in the room can be maintained smoothly regardless of the operation of the heat pump.

As such, within the scope of the basic technical idea of the present invention, many modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

1 is a view showing an embodiment of a water circulation system by the present ignition.

Figure 2 is a view showing a signal detection unit of the contact method in the embodiment of the water circulation system according to the present invention.

Figure 3 is a control block diagram showing the control signal flow in an embodiment of the water circulation system according to the present invention.

Figure 4 is a view showing the operation in the heat pump interlocking mode in the embodiment of the water circulation system according to the present invention.

5 is a view showing the operation in the boiler interlocking mode in the embodiment of the water circulation system according to the present invention.

6 is a flow chart showing a control method of the embodiment of the water circulation system according to the present invention.

Claims (15)

A heat pump configured to include a compressor, an outdoor heat exchanger, an expansion unit, and an indoor heat exchanger in which heat is exchanged between water and a refrigerant; An indoor heat transfer unit through which water discharged from the indoor heat exchanger flows for indoor hot water supply or air conditioning; A boiler unit connected to both ends of the indoor heat transfer unit to heat water discharged from the indoor heat transfer unit; And A contact detecting unit for receiving a contact signal for controlling the operation of the heat pump and the boiler unit; And a contact unit selectively contacting the contact sensing unit to receive the contact signal. The method of claim 1, The water detection system, characterized in that the contact sensing unit is located indoors. The method of claim 1, The boiler unit, A heating unit in which water is stored or flowed to be heated; And a heating source for heating the water of the heating unit. The method of claim 1, The heat pump and the boiler, characterized in that the heat pump and the boiler unit is selectively operated according to the contact unit. The method of claim 4, wherein When the contact unit is in contact with the contact sensing unit, the heat pump is operated and the boiler is inoperative, And when the contact unit is not in contact with the contact sensing unit, the boiler unit is operated and the heat pump is not operated. The method of claim 4, wherein The water circulation system, characterized in that the operating state of the heat pump or boiler is maintained until the contact state of the contact unit is changed. The method of claim 1, The water circulation system, characterized in that the water flowing in the indoor heat transfer unit is selectively flowed to any one of the heat pump and the boiler unit according to the contact unit. The method of claim 3, wherein Water flowing through the indoor heat transfer unit, When the contact unit is in contact with the contact sensing unit flows to the heat pump, And the contact unit flows to the boiler unit when the contact unit is not in contact with the contact detecting unit. The method of claim 1, Further comprising a first pump for forcibly flowing the water of the indoor heat exchanger, and a second pump for forcibly flowing the water of the boiler, And the first pump and the second pump are selectively operated according to whether the contact unit is in contact. The method of claim 1, A refrigerant pipe connecting the heat pump, an indoor heat transfer unit, and a boiler unit; And And a valve for selectively opening and closing the refrigerant pipe such that water discharged from the indoor heat transfer part flows to the heat pump or the boiler part. The method of claim 10, The valve is a water circulation system, characterized in that the three-way valve (three way valve) connected to the heat pump, the indoor heat transfer unit and the boiler at the same time. Contacting the contact unit with the contact sensing unit to receive a signal for switching the operation mode; And Controlling the operation of the water circulation system. 13. The method of claim 12, The operation mode is A heat pump interlocking mode in which water flowing in the indoor heat transfer unit exchanges heat with a refrigerant flowing in the heat pump; And And a boiler interlocking mode in which the water flowing in the indoor heat transfer unit is heated by the boiler unit. 13. The method of claim 12, And after the operation mode is switched, maintaining the switched operation mode operation while the contact unit keeps in contact with the touch sensing unit. 13. The method of claim 12, Separating the contact unit from the contact sensing unit; And And re-switching the operation mode.

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