KR100607152B1 - Heat pump type heat and cooling system for feeding steam water - Google Patents

Abstract

The present invention relates to a heat pump type air-conditioning system configured to install a hot water supply device together with an outdoor heat source supply device to perform a normal indoor cooling and heating function and additionally perform a hot water supply function and a hot water supply function. The hot water supply device 30 is connected to the second four-way valve 34 on the outlet side of the compressor 12 and the three-way valve 32 between the outdoor heat exchanger 16 and the indoor units 20a, 20b, and 20c. Thus, the refrigerant flow path 36 provided with the hot water heat exchanger 38 is connected to the cooling / cooling refrigerant circulation circuit L1, thereby forming one hot water refrigerant cooling circuit L2, and the hot water heat exchanger ( 38, a hot water supply pipe 37 composed of a direct inlet 37a and a hot water supply 37b is passed through the hot water supply 37, and an open / close valve 39a is provided and the direct inlet 37a. In order to detect the pressure in the hot water supply pipe in accordance with the opening and closing of the on-off valve (39a) The pressure sensor 39b is installed, the control unit 40 controls the second four-way valve 34 and the three-way 32 in accordance with the signal of the pressure sensor 39b to cool the refrigerant. The hot water supply pipe 37 heats the water in the hot water heat exchanger 38 while allowing the hot water refrigerant circulation circuit L2 to flow.

Hot water supply device, heat pump, air conditioning, compressor, condenser, four sides, three sides

Description

Heat pump type heating and cooling system with hot water supply function {HEAT PUMP TYPE HEAT AND COOLING SYSTEM FOR FEEDING STEAM WATER}

Figure 1 is a schematic diagram showing a heat pump type heating and cooling system according to an embodiment of the present invention.

Figure 2 is a schematic view showing a part of the heat pump type heating and cooling system of Figure 1, a view showing the flow of the refrigerant during the heating and cooling.

FIG. 3 is a view partially illustrating a heat pump type heating and cooling system of FIG. 1, illustrating a flow of a refrigerant during hot water supply.

4 is a block diagram illustrating a control method of the heat pump type heating and cooling system of FIGS. 1 to 3;

<Code Description of Main Parts of Drawing>

10: outdoor heat supply device 12: compressor

14: first four-way valve 16: outdoor heat exchanger

20a, 20b, 20c: Indoor unit 30: Hot water supply device

32: three-way valve 34: second four-way valve

36: refrigerant flow path 38: hot water heat exchanger

37a; Direct inlet 37b; Hot water supply

37: hot water supply pipe 39a: on-off valve

39b: pressure sensor 40: control unit

The present invention relates to a heat pump type heating and cooling system, and more specifically, to a hot water supply device in an outdoor heat source supply device, to perform a normal indoor air conditioning function and additionally perform a hot water supply function and a hot water supply function. The present invention relates to a heat pump heating and cooling system.

In the present specification, the 'heat pump type heating and cooling system' refers to a cooling and heating system using a gas engine driven type (GHP; Gas Heat Pump), an electric compression type (EHP), or ground source heat pumps (GSHPs). Collectively, these GHPs, EHPs and GSHPs are all equipment for cooling and heating through the heat pump cycle circulation of the refrigerant.

In addition, the "heat pump type heating and cooling system" means a system that performs cooling and heating at the same time by switching the low temperature to high temperature or the high temperature to low temperature through the bi-directional flow of the refrigerant, the heat pump type heating and cooling system A plurality of indoor units are connected to one outdoor heat source supply device, a plurality of outdoor heat source devices are connected to one indoor unit, or an indoor unit and an outdoor heat source supply device are used in a 1: 1 connection.

Conventional heat pump type air-conditioning system has a compressor, a four-way valve, an air heat exchanger, an expansion valve, and an indoor unit connected by a refrigerant circulation circuit, while each indoor unit is provided with a plurality of expansion valves and a room temperature sensor. It has a structure installed in the space, and often has its own heat exchanger has a structure for evaporating or condensing the refrigerant by air cooling of the outdoor fan.

However, the conventional heat pump type air-conditioning system has a problem that its generality is greatly reduced because it does not have a hot water supply and hot water supply function only by performing cooling to the room through the selective operation of the air conditioning cycle.

Therefore, the present invention, devised to solve the problems of the prior art, by installing a hot water supply device with an outdoor heat source supply device, while performing a normal indoor cooling and heating function, at the same time add hot water supply function and hot water supply function In addition, to provide a heat pump type heating and cooling system capable of supplying a constant hot water at all times by operating the hot water supply device according to the operating pressure of the hot water.

In addition, another object of the present invention is to provide a heat pump type heating and cooling system capable of supplying hot water supply and hot water during heating and cooling, and at the same time the operation of the gas refrigerant circulation cycle of the outdoor heat source supply device and the operation of the hot water supply device can be controlled remotely. will be.

In order to achieve the above object, the heat pump type air-conditioning system of the present invention, the outdoor heat source supply device, the indoor unit and the hot water supply device is provided to be controlled by a control unit, for cooling and heating for circulating the outdoor heat source supply device and the indoor unit A compressor, a first four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor unit are continuously installed along the refrigerant circulation circuit to selectively perform heating and cooling according to the refrigerant flow switching of the first four-way valve, and supply the hot water supply. The apparatus comprises a refrigerant flow path having a hot water heat exchanger installed by a second four-way valve on the compressor outlet side and a three-way valve between an outdoor heat exchanger and an indoor unit connected to the cooling / cooling refrigerant circulation circuit, thereby providing one refrigerant for hot water supply. A circulation circuit is formed, and a hot water supply pipe composed of a direct inlet part and a hot water supply part passes through the hot water heat exchanger. The on-off valve is provided at the hot water supply part, and the pressure inlet sensor is installed at the direct inlet part to detect the pressure in the hot water supply pipe according to the opening / closing of the open / close valve. A second four-way valve and the three-way valve is controlled to heat the water in the hot water feed pipe in the hot water heat exchanger while allowing the refrigerant to flow through the hot water refrigerant circulation circuit.

Here, the heat pump type air-conditioning system of the present invention further includes a wired and wireless remote controller for transmitting a signal to the control unit, the wired and wireless remote control is provided with a hot water supply button for the operation of the hot water supply device, the control unit is an indoor unit And controlling the indoor unit and the outdoor heat source supply device in a state where the outdoor heat source supply device is connected to each other to enable wired and wireless communication.

<Example>

1 is a schematic view showing a heat pump type heating and cooling system according to an embodiment of the present invention, Figure 2 is a heat pump type heating and cooling system in Figure 1, cutting the refrigerant circulation circuit for hot water cooling refrigerant circulation for heating and cooling FIG. 3 is a diagram showing only a circuit, and FIG. 3 is a diagram showing only the refrigerant circulation circuit for hot water by cutting the refrigerant circulation circuit for heating and cooling in the heat pump type heating and cooling system of FIG. 1.

As shown in FIGS. 1 to 3, the heat pump type air conditioning system 1 of the present embodiment includes a plurality of indoor units 20a, 20b, connected to an outdoor heat source supply device 10 and an outdoor heat source supply device. 20c) has a structure of cooling and cooling the room by evaporating and condensing the refrigerant flowing from the outdoor heat source supply device 10 in an indoor unit depending on whether it is air-conditioning or not.

To this end, the heat pump type air-conditioning system 1 of the present embodiment follows a refrigerant circulation circuit L1 (shown in FIG. 2) circulating the outdoor heat source supply device 10 and the indoor units 20a, 20b, and 20c. The outdoor heat source supply device 10 includes a compressor 12, a first four-way valve 14, and an outdoor heat exchanger 16, and the refrigerant circulation circuit L1 includes a plurality of expansion valves 22a, 22b, and 22c. ) Is connected to the indoor units 20a, 20b, and 20c by extending from the outdoor heat source supply device 10 in parallel with each other.

Therefore, in the heat pump type air-conditioning system 1, during the cooling operation, the refrigerant is compressed into the gas refrigerant of high temperature and high pressure while passing through the compressor 12, and the gas refrigerant of high temperature and high pressure is described in detail below. After the four-way valve 34 is switched in the first four-way valve 14 is condensed into the liquid refrigerant of the medium temperature low pressure by a cooling fan (not shown) in the outdoor heat exchanger 16, and a plurality of expansion valves After being expanded by 22a, 22b, and 22c, it is evaporated in a plurality of indoor units (or indoor heat exchangers; 20a, 20b, and 20c) to cool the room.

Conversely, the cooling and heating system 1 allows the refrigerant to flow in the reverse direction of the cooling cycle for heating operation so that the refrigerant is evaporated by the heat of the outdoor heat exchanger 16, while the plurality of indoor units 20a, 20b, 20c In each case, the refrigerant is condensed to heat the room with the heat of condensation.

Meanwhile, the air conditioning system 1 of the present embodiment further includes a hot water supply device 30 using a refrigerant used for cooling and heating as a heat source for hot water supply. The hot water supply device 30 includes a three-way valve 32 and a third valve. A hot water coolant flow passage 36 connected to the cooling / heating refrigerant circulation circuit L1 by the two-way valve 34 is provided. The hot water coolant flow passage 36 is provided with a hot water heat exchanger 38 for hot water and hot water heating, and the hot water heat exchanger 38 includes a direct water inlet 37a and a hot water water supply 37b. The made hot water supply pipe 37 passes.

Here, the second four-way valve 34 is installed at the outlet of the compressor 12 and the three-way valve 32 is the refrigerant circulation circuit L1 between the outdoor heat exchanger 16 and the indoor units 20a, 20b, 20c. Or L2). The three-way valve 32 and the second four-way valve 34 are connected to the cooling / cooling refrigerant circulation circuit L1 by connecting the above-mentioned hot water refrigerant passage 36 to the cooling / heating refrigerant circulation circuit L1. Separately, one coolant circulation circuit L2 (shown best in FIG. 3) for hot water supply is formed.

At this time, the refrigerant in the hot water refrigerant circulation circuit (L2) is a refrigerant 12, the second four-way valve 34, the hot water heat exchanger 38, the three-way valve 32, the expansion valve 31 and It is possible to circulate continuously through the outdoor heat exchanger (16), which is a direct inlet (37a) in the hot water heat exchanger (38) using a gaseous refrigerant of high temperature and high pressure obtained from the compressor (12) separately from air conditioning It is possible to supply the hot water introduced through the hot water to the outside through the hot water supply unit 37b.

Therefore, the above-mentioned air-conditioning system 1 turns off the one side 32a of the three-way valve 32 toward the indoor units 22a, 22b, and 22c at the time of supply of hot water and hot water, and coolant for hot water supply. The second four-way valve 34 is switched to the hot water supply while the other sides 32b for allowing the flow of water are turned on, thereby allowing the refrigerant to circulate the refrigerant circulation circuit L2 for the hot water supply. Through this, the gaseous refrigerant compressed by the high temperature and high pressure in the compressor 12 enters through the direct water inlet 37a in the hot water supply heat exchanger 38 to heat the water flowing in the hot water supply pipe 37 with hot water. Is discharged to the outside through the hot water supply unit 37b is supplied to the user as hot water and hot water.

On the other hand, the hot water supply portion 37b of the hot water supply pipe 37 is provided with an on-off valve 39a for controlling the supply of the hot water to enable the use of hot water by the user and the direct inlet of the hot water supply pipe 37 ( 37a) is provided with a pressure sensor 39b for detecting the pressure in the hot water supply pipe 37 to detect the pressure change according to the opening and closing of the on-off valve 39a.

In addition, the heat pump type air-conditioning system 1 according to the present invention includes a control unit 40 and is configured to be controlled by the control unit 40 as a whole. In particular, the control unit 40, the pressure sensing When the pressure in the sensor 39b is compared with a preset set pressure, when the pressure in the hot water supply pipe 37 is lower than the set pressure, the hot water supply device 30 is individually operated to directly supply hot water and hot water at a predetermined temperature to the user. Enable to provide

 In addition, the heat pump type air-conditioning system 1 of the present embodiment further includes a wired / wireless remote controller (see FIG. 4) having a hot water supply button 52, so that constant hot water can be supplied at any time through the operation of the wired / wireless remote controller 50. Do.

4 is a block diagram illustrating an example of a control method for controlling the heat pump type air-conditioning system described above.

As shown in FIG. 4, the heat pump type air conditioning system 1 includes an outdoor unit including a hot water supply and supply device 30 through a central processing unit 25 provided in a main body of an indoor unit 20a, 20b, or 20c. The heat source supply device 10 is configured to be operable.

That is, the control unit 40 is connected to the indoor unit 20a, 20b, or 20c and the outdoor heat source supply device 10 so as to enable wired and wireless communication with each other, the wired and wireless remote controller 50 has a plurality of button functions, By easily transmitting a signal to the control unit 40 allows the administrator and the user to operate the indoor units 20a, 20b, and 20c even at a short distance, and at the same time enable the operation of the outdoor heat source supply device 10 connected by wired or wireless communication. do.

In addition, the central processing unit 25 of the present embodiment receives the state abnormal signal and the alarm signal generated in the heat pump type heating and cooling system 1 and performs the stored procedure stored in the storage unit 26 to perform the It generates a signal informing the status, and also to follow the control procedures stored in the storage unit 26 or to control commands generated by the wired and wireless remote controller 50 and to the control commands of the remote manager and the user connected through the communication modem 27 Accordingly.

The communication modem 27 notifies the remote manager and the user of the status signal of the heat pump type air-conditioning system 1 input to the central processing unit 25 through the communication network, and the remote manager and the user control the communication through the communication network. Entering a command passes it to the central processing unit.

The communication means 60 is composed of a wireless telephone 61, a wired telephone 62, a pager 63, and an internet terminal 64. Since the communication means 60 is connected to the communication modem 67 through a communication network, The abnormal state of the heat pump type air-conditioning system 1 can be transmitted or confirmed, and the control signal for the heat pump type air-conditioning system 1 can be easily transmitted from a long distance by a manager and a user.

As described above, the present invention improves the conventional heat pump type air-conditioning system that performs only the heating and cooling function, and further provides a hot water supply function and a hot water supply function together with the air-conditioning function of the heat pump type air-conditioning system having excellent versatility. Enable implementation

In addition, the present invention, the user can easily perform the cooling operation, heating operation and hot water operation, the administrator, and provides the effect that the hot water operation can be made separately from the heating operation and cooling operation.

In addition, the present invention provides an effect that allows the user to use a constant warm hot water at all times by automatically operating the heat pump water supply device according to the user's hot water use pressure.

Claims (2)

The outdoor heat source supply device 10, the indoor unit (20a, 20b, 20c) and the hot water supply device 30 is controlled by the control unit 40, the outdoor heat source supply device 10 and the indoor unit (20a, 20b) The compressor 12, the first four-way valve 14, the outdoor heat exchanger 16, the expansion valves 22a, 22b, 22c and the indoor unit along the cooling / cooling refrigerant circulation circuit L1 circulating 20c. 20a, 20b, and 20c are continuously installed to selectively perform heating and cooling according to the refrigerant flow switching of the first four-way valve 14, The hot water supply device 30 includes a second four-way valve 34 on the outlet side of the compressor 12 and a three-way valve 32 between the outdoor heat exchanger 16 and the indoor units 20a, 20b, and 20c. A coolant flow path 36 provided with a hot water heat exchanger 38 is connected to the cooling / cooling refrigerant circulation circuit L1 to thereby form a single hot water refrigerant circulation circuit L2. In the hot water supply heat exchanger 38, the heat pump type heating and cooling system is installed so that the hot water supply pipe 37 composed of a direct inlet portion 37a and hot water supply portion 37b passes through, The hot water supply portion 37 is provided with an on-off valve 39a, the direct inlet portion 37a is provided with a pressure sensor (39b) for detecting the pressure in the hot water supply pipe in accordance with the opening and closing of the opening and closing valve (39a). , The control unit 40 controls the three-way valve and the four-way valve according to the signal of the pressure sensor 39b to allow the refrigerant to flow through the refrigerant circulation circuit L2 for the hot water supply heat exchanger 38. Heat pump type heating and heating system having a hot water supply function, characterized in that for heating the water in the hot water supply pipe (37). The method of claim 1, Further comprising a wired and wireless remote control 5 for transmitting a signal to the control unit 40, the wired and wireless remote control 50 is provided with a hot water supply button 52 for the operation of the hot water supply device 30, The control unit 40 connects the indoor units 20a, 20b, 20c and the outdoor heat source supply device 10 with the indoor units 20a, 20b, 20c and the outdoor heat source supply device 10 connected to each other to enable wired and wireless communication. Heat pump type heating and cooling system having a hot water supply function, characterized in that for controlling.

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