TW201617567A - Heat pump air conditioning system - Google Patents

Abstract

The present invention provides a heat pump air conditioning system, which includes a control unit, a hot water unit and a heat exchange set. The heat exchange set is capable of changing the flow direction of refrigerant based on the requirement so as to provide the refrigerant with multiple heat exchange modes. Accordingly, the present invention is able to provide multiple functional implementation modes of hot water and air conditioning, air conditioning, and hot water, thereby alleviating the drawback that the system performance and efficiency are negatively influenced by unsatisfactorily configuring the pipelines and components of the existent system, so as to achieve an operative excellence for the multi-functional heat pump air conditioning mode with substantial and true energy-saving.

Description

Heat pump air conditioning system

The present invention relates to a heat pump air conditioning system, and more particularly to an improved and innovative system for changing the flow direction of a refrigerant to achieve a combination of different heat exchange modes.

At present, most households still supply air conditioning and hot water separately for two sets of equipment (air conditioning system and heat pump system) for cooling (air-conditioning demand) or heating (hot water demand). In terms of hardware equipment, it can be said that the compressor system is repeatedly used, so that the earth's resources are wasted, or the function is repeated, because when the indoor air is required, the heat discharged can simultaneously produce hot water, but it is not utilized. It is discharged, so it can be said that it is double energy.

In order to avoid the duplication of equipment and the waste of energy consumption, it is necessary to integrate the heating and cooling air conditioning function and the heat pump hot water function on the same set of equipment, which has at least the patent pending case of Taiwan Patent Publication No. 201219726 (ie, application No. 99137600).

However, the above-mentioned patent predecessor has at least the following shortcomings in practice due to imperfect design:

(1) The existing cold air is in the process of assembling the pipe, the small diameter pipe is the inlet pipe of the liquid cold coal flowing into the indoor unit, and the large diameter pipe is the outlet pipe of the liquid cold coal flowing through the indoor unit to evaporate into the low pressure gaseous cold coal; Figure 1 of the patent case (high In the case of load hot water with cold air, the cold coal process is designed as a small diameter pipe, which causes large impedance, low pressure, and flows through the second expansion device (25). The symbol of the component in the patent case, the following is the same, will make the cold coal that has been absorbed into the gaseous state expand twice, the pressure will be lower, and then flow through the outdoor heat exchanger (24) evaporator before flowing back to compression. At the suction end of the machine (20), this will cause a serious shortage of cold coal, and the suction temperature of the compressor (20) is too high, causing damage to the compressor (20).

(2) The square valve (23) is a member that changes the flow direction of the cold coal by pushing the valve member between the electromagnetic pressure and the pipeline. However, the design of the patent (Fig. 1 to Fig. 5), the high pressure cold coal flows first. The first expansion device (22) becomes a low-pressure refrigerant and then to the square valve (23), so that the pressure difference between the high and low pressures is reduced, and the square valve (23) becomes smaller due to the pressure difference, which will be changed when the system is switched. There is a serious lack of switching.

(3) In the case of Figure 2 of the previous patent (low-load hot water with air-conditioning mode), the existing air-conditioning system process, there should be no first expansion device (22), and the expansion should be second The expansion device (25) turns the liquid cold coal into a cold coal with coexistence of liquid and gas! The first expansion device (22) will cause excessive pressure drop and excessive expansion, which will affect the serious lack of performance coefficient.

(d) In the case of Figure 3 (single air-conditioning mode) of the patent, the same process design, high-pressure gaseous cold coal flowing through the first expansion device (22) will cause excessive pressure drop and excessive expansion, The coefficient of performance is affected, that is, the first expansion device (22) is a component that should not exist in the system, or a circuit must be replaced.

(5) In the case of Figure 4 (single hot water mode) of the patent, the high pressure gaseous cold coal at the output of the compressor (20) is condensed into liquid cold coal through the liquid heat exchanger (21). Flow through the first expansion device (22) to reduce the pressure to coexist The cold coal is then evaporated into the gaseous cold coal by the outdoor heat exchanger (24) and returned to the suction end of the compressor (20) for normal system flow. However, the fourth figure of the patent is followed by the second. The expansion device (25) will cause excessive impedance and affect performance.

(6) As far as Figure 5 of the previous patent (the hot water heating mode), the normal process should be high pressure and high temperature gaseous cold coal entering the indoor heat exchanger (26) from the large diameter pipe, and the heat is condensed into liquid cold. The coal is then pressure-dropped by the second expansion device (25) and then vaporized into gaseous cold coal via the outdoor heat exchanger (24) and returned to the suction end of the compressor (20). However, in the fifth figure of the patent, the high pressure and high temperature gaseous cold coal flows through the first expansion device (22), which will cause excessive expansion pressure drop, so that the pressure at the high pressure end is too large, and the pressure at the low pressure return end is too low, so that The system is operating abnormally.

In view of the above defects, the inventor of the present invention believes that the components used in the heat pump air conditioning system (such as square valves, expansion devices, etc.) are well known in the industry, but to achieve the goal of intelligent commodification of real compounding and energy saving, only through the system pipeline The rationalization of component configuration can be achieved, because the location and quantity of each component, and the reasonable logical configuration of the flow direction of the refrigerant affect whether the multi-functional target can be achieved. Therefore, when changing the flow direction of the refrigerant, the refrigerant can generate various heats in the system. The mode of exchange, in order to provide versatility, and to make the system operate normally without the absence of excessive pressure drop and expansion, is the gist of the invention.

In order to achieve the above-mentioned intended object, the present invention adopts the following technical solution: the present invention is a heat pump air conditioning system, which is composed of a control unit, a hot water unit and a heat exchange group, wherein the hot water single water has a water storage tank a pump, a liquid inlet pipe and a liquid outlet pipe, and the water storage tank is connected by a liquid outlet pipe. And the inlet pipe is connected to communicate, and the pumping system electrically connected to the control unit is connected to the outlet pipe; and the heat exchange group comprises at least one compressor electrically connected to the control unit, and a water side heat An exchanger, a first four-square valve, a first expansion device, an outdoor heat exchanger, a second expansion device, and an indoor heat exchanger, and connected by a refrigerant pipe to form a refrigerant circulation circuit, and a discharge pipe And the inlet pipe is connected to the water side heat exchanger, and the first fan and the second fan are respectively disposed on the sides of the outdoor heat exchanger and the indoor heat exchanger, and the first fan and the second fan are also electrically Connected to the control unit; and the main improvement is that the refrigerant pipeline includes at least a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, and a sixth pipeline, and the compressor The first line is connected to the first square valve, and the water side heat exchanger is connected to the first line, the first square valve is connected to the outdoor heat exchanger by the second line, and the outdoor heat exchanger is connected by the third line. An expansion device, and the first expansion device is a fourth tube Connecting the indoor heat exchanger, the indoor heat exchanger is connected back to the compressor by a fifth line, and the first end of the sixth line is passed through the first square valve, and is connected to the third line by the second expansion device, and the sixth line is connected. The other end is connected to the fifth line. According to this, the flow of the refrigerant is changed by the guidance of the control unit to achieve a combination of hot water, cold air and hot water.

In one of its modes of operation, when the control unit controls to operate the second expansion device, the water-side heat exchanger starts to condense from the high-pressure gaseous refrigerant from the compressor in the first line, and supplies heat to the storage tank, and the refrigerant flows through The first four-party valve enters the outdoor heat exchanger via the second pipeline, and the control unit controls the rotation speed of the compressor, the pump, and the first fan to make the preset temperature condition according to the plurality of temperature sensing components, and according to the hot water And regulate the operation with the air-conditioning demand, and after the outdoor heat exchanger is completely condensed into a high-pressure liquid refrigerant, the third pipeline is subjected to the first expansion. The expansion device regulates the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the fourth pipeline is evaporated into a low-pressure gas state through the indoor heat exchanger, and is returned to the compressor from the fifth pipeline to form an operation capable of providing hot water and cold air. mode.

In the second mode of operation, when the control unit controls to operate the pump and the second expansion device, the high-pressure gaseous refrigerant from the compressor flows from the first pipeline through the water-side heat exchanger, the first four-party valve, and The second pipeline enters the outdoor heat exchanger and condenses into a high-pressure liquid refrigerant, and the third pipeline passes through the first expansion device to adjust the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the fourth pipeline is evaporated through the indoor heat exchanger. The low pressure gaseous state is returned to the compressor by the fifth line to form an operating mode that only provides cold air.

Secondly, a second square valve may be added to the first line between the water side heat exchanger and the first square valve, and the fifth line is connected to the second square valve. In one of its modes of operation, when the control unit controls to operate the second expansion device, the water-side heat exchanger will start to condense from the high-pressure gaseous refrigerant from the compressor in the first line and provide heat to the water storage tank, and the refrigerant flows sequentially. a second square valve, a first square valve, and a second pipeline enter the outdoor heat exchanger, and the control unit controls the speed of the compressor, the pump, and the first fan to be preset according to the plurality of temperature sensing components The temperature condition is adjusted according to the demand of hot water and cold air, and after the outdoor heat exchanger is completely condensed into a high pressure liquid refrigerant, the third line is adjusted by the first expansion device to adjust the flow rate and the pressure drop to form a low temperature and low pressure liquid gas. The refrigerant is then vaporized into a low-pressure gas state by the fourth pipeline through the indoor heat exchanger, and then returned to the compressor by the fifth pipeline through the second square valve to form an operation mode capable of providing hot water and cold air.

In the second mode of operation, when the control unit controls to operate the pump and the second expansion device, the high pressure gaseous refrigerant from the compressor passes through the first The pipeline flows through the water side heat exchanger, the second square valve, the first square valve, and the second pipeline enters the outdoor heat exchanger to be condensed into a high pressure liquid refrigerant, and the third pipeline is regulated by the first expansion device. The flow rate and the pressure drop form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth line is evaporated into a low pressure gas state through the indoor heat exchanger, and then the fifth line returns to the compressor through the second square valve, thereby forming only the cold air. Mode of operation.

Furthermore, a second square valve may be added to the first line between the water side heat exchanger and the compressor, and the fifth line is connected to the second square valve. One of its modes of operation, when the control unit controls to operate the second expansion device, the water-side heat exchanger will start to condense by the high-pressure gaseous refrigerant from the compressor through the second square valve in the first line, and provide heat for storage. The water tank flows through the first four-party valve and enters the outdoor heat exchanger from the second pipeline, and the control unit controls the rotation speed of the compressor, the pump and the first fan, so that the temperature condition preset according to the plurality of temperature sensing elements And adjusting the operation according to the demand of hot water and cold air, and after the outdoor heat exchanger is completely condensed into a high-pressure liquid refrigerant, the third pipeline is adjusted to the flow rate and the pressure drop by the first expansion device to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then The fourth pipeline is vaporized into a low pressure gas state through the indoor heat exchanger, and then returned to the compressor by the fifth pipeline through the second square valve to form an operation mode capable of providing hot water and cold air.

In the second mode of operation, when the control unit controls to operate the pump and the second expansion device, the high-pressure gaseous refrigerant from the compressor sequentially flows through the second square valve and the water-side heat exchanger via the first pipeline. The first four-square valve and the second pipeline enter the outdoor heat exchanger to be condensed into a high-pressure liquid refrigerant, and the third-stage pipeline is adjusted by the first expansion device to adjust the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then The four pipelines are evaporated into a low-pressure gas state through the indoor heat exchanger, and the The five lines return to the compressor via the second four-way valve to form an operating mode that only provides cold air.

Next, the present invention provides another technical solution: the present invention is a heat pump air conditioning system, which is composed of a control unit, a hot water unit and a heat exchange group, wherein the hot water single water has a water storage tank and a a pump, a liquid inlet pipe and a liquid outlet pipe, the water storage tank is connected by the liquid discharge pipe, and is connected by the liquid inlet pipe, and the pumping system electrically connected to the control unit is connected to the liquid discharge pipe; The heat exchange group includes at least one compressor electrically connected to the control unit, a water side heat exchanger, a first square valve, a first expansion device, an outdoor heat exchanger, and a second expansion device. And an indoor heat exchanger, and connected by a refrigerant pipeline to form a refrigerant circulation loop, the outlet pipe and the inlet pipe are connected to the water side heat exchanger, and the side of the outdoor heat exchanger and the indoor heat exchanger are respectively a first fan and a second fan are disposed, and the first fan and the second fan are also electrically connected to the control unit; and the main improvement is that the refrigerant pipeline includes at least a seventh pipeline and an eighth pipeline. , a ninth pipeline and a tenth pipeline, pressure The machine is connected to the second expansion device through the water-side heat exchanger and the first square valve in sequence, and the second expansion device is connected to the outdoor heat exchanger by the eighth pipeline, and the ninth pipeline is connected to the outdoor heat exchanger. It is connected to the compressor through the first four-way valve, and is connected to the eighth line by one end of the tenth line through the first expansion device, and the other end of the tenth line is connected to the ninth line through the indoor heat exchanger. According to this, the refrigerant is guided by the control unit to change the flow direction of the refrigerant to achieve the operation of providing hot water.

One of its modes of operation, when the control unit controls to operate the first expansion device and the indoor heat exchanger, the water-side heat exchanger condenses the high-pressure gaseous refrigerant from the compressor from the seventh line into a liquid refrigerant and provides heat for storage. The water tank flows through the first four square valve to the second expansion device to adjust the flow rate and pressure drop to form a low temperature low pressure liquid gas coexisting refrigerant, and then the eight pipelines flow through the outdoor heat exchanger to evaporate into a low pressure gas state, and then pass through the ninth pipeline. Returning to the compressor through the first four-way valve creates an operational mode that only provides hot water.

Secondly, a second square valve may be added to the first line between the water side heat exchanger and the first square valve, and the tenth line is connected to the ninth line by the second square valve. When the operation mode is controlled by the control unit to operate the first expansion device and the indoor heat exchanger, the water-side heat exchanger condenses the high-pressure gaseous refrigerant from the compressor into the liquid refrigerant and supplies heat to the water storage tank. The refrigerant flows through the second square valve and the first square valve in sequence, and the second expansion device adjusts the flow rate and the pressure drop to form a low temperature low pressure liquid gas coexisting refrigerant, and then the eighth pipeline flows through the outdoor heat exchanger to evaporate into a low pressure. The gaseous state is returned to the compressor through the first square valve through the ninth line to form an operation mode in which only hot water can be supplied.

Furthermore, a second square valve may be added to the first line between the water side heat exchanger and the compressor, and the tenth line is connected to the ninth line by the second square valve. When the operation mode is controlled by the control unit and the first expansion device and the indoor heat exchanger are turned off to operate, the water side heat exchanger condenses the liquid refrigerant from the high pressure gaseous refrigerant from the compressor through the second square valve to the liquid refrigerant. And providing heat to the water storage tank, the refrigerant flows through the first four-party valve to the second expansion device to adjust the flow rate and pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the eighth pipeline flows through the outdoor heat exchanger to evaporate into a low pressure The gaseous state is returned to the compressor through the first square valve through the ninth line to form an operation mode in which only hot water can be supplied.

Therefore, it is understood that the main object of the present invention is to provide a heat pump air conditioning system, mainly by rationalizing the flow direction of the system and the configuration of the components. When changing the flow direction of the refrigerant, the refrigerant can generate a plurality of modes of heat exchange in the system, and there is no excessive pressure drop and lack of expansion, and the present invention achieves many functions and enhancements.

1‧‧‧Control unit

2‧‧ ‧ hot water unit

21‧‧ ‧ water bucket

22‧‧‧ pump

23‧‧‧Inlet pipe

24‧‧‧Draining tube

25‧‧‧ Flowmeter

3‧‧‧Hot Exchange Group

31‧‧‧Compressor

32‧‧‧Waterside heat exchanger

33‧‧‧First four square valve

34‧‧‧First expansion device

35‧‧‧Outdoor heat exchanger

351‧‧‧First fan

36‧‧‧Second expansion device

37‧‧‧ indoor heat exchanger

371‧‧‧second fan

38‧‧‧Second square valve

30, 30'‧‧‧ refrigerant pipeline

301‧‧‧First pipeline

302‧‧‧Second pipeline

303‧‧‧ third pipeline

304‧‧‧fourth pipeline

305‧‧‧ fifth pipeline

306‧‧‧ sixth pipeline

307‧‧‧ seventh pipeline

308‧‧‧ eighth pipeline

309‧‧‧ ninth pipeline

Fig. 1 is a schematic view showing the flow of a refrigerant in the first hot water and cold air mode of the present invention.

Fig. 2 is a schematic view showing the flow of a refrigerant in the first cold air mode of the present invention.

Fig. 3 is a schematic view showing the flow of a refrigerant in the second hot water and cold air mode of the present invention.

Fig. 4 is a schematic view showing the flow of a refrigerant in the second cold air mode of the present invention.

Fig. 5 is a schematic view showing the flow of a refrigerant in the third hot water and cold air mode of the present invention.

Fig. 6 is a schematic view showing the flow of a refrigerant in the third cold air mode of the present invention.

Fig. 7 is a schematic view showing the flow of a refrigerant in the first hot water mode of the present invention.

Fig. 8 is a schematic view showing the flow of a refrigerant in the second hot water mode of the present invention.

Fig. 9 is a schematic view showing the flow of a refrigerant in the third hot water mode of the present invention.

First, referring to FIG. 1, the present invention has a control unit 1, a hot water unit 2, and a heat exchange group 3. Wherein: the hot water single water 2 has a water storage tank 21, a pump 22, a liquid inlet pipe 23 and a liquid discharge pipe 24, and the water storage tank 21 is connected by the liquid discharge pipe 24, and the liquid inlet pipe 23 is connected. The pump 22 is electrically connected to the control unit 1 and is connected to the discharge pipe 24. In addition, a flow meter 25 is additionally provided in the discharge pipe 24.

The heat exchange group 3 includes a compressor 31, a water side heat exchanger 32, a first square valve 33, a first expansion device 34, an outdoor heat exchanger 35, a second expansion device 36, and an indoor unit. The heat exchangers 37 are electrically connected to the control unit 1 and connected by a refrigerant line 30 to form a refrigerant circulation circuit, and the outlet pipe 24 and the inlet pipe 23 are connected to the water side heat exchanger 32, and The flow meter 25 described above is a protective function to prevent the water from entering the water side heat exchanger 32 without water or water, causing air burning and damage to the system. Next, a first fan 351 and a second fan 371 are respectively disposed on the side of the outdoor heat exchanger 35 and the indoor heat exchanger 37, and are also electrically connected to the control unit 1, and the first fan 351 and the second fan. The 371 can be an inverter fan.

The refrigerant line 30 includes a first line 301, a second line 302, a third line 303, a fourth line 304, a fifth line 305, and a sixth line 306 (as shown in Figures 1, 2). The first line 301 is connected to the compressor 31 to the first square valve 33, and the water side heat exchanger 32 is connected to the first line 301, and the second line 302 is connected from the first square valve 33 to the outdoor heat exchanger 35. The outdoor heat exchanger 35 is connected to the first expansion device 34 by a third line 303, and the first expansion device 34 is connected to the indoor heat exchanger 37 by a fourth line 304, and the indoor heat exchanger 37 is connected back to the compressor with a fifth line 305. 31, and one end of the sixth line 306 passes through the second square valve 38 and is connected to the third line 303 by the second expansion device 36, and the other end of the sixth line 306 is connected to the fifth line 305.

Next, a second square valve 38 may be added to the first line 301 between the water side heat exchanger 32 and the first square valve 33, and the fifth line 305 is connected to the second square valve 38 (eg, 3, 4). Figure). Furthermore, the second square valve 38 may also be disposed in the first line 301 between the water side heat exchanger 32 and the compressor 31, and fifth. Line 305 also communicates with second square valve 38 (as in Figures 5 and 6).

According to the above, its implementation model is as follows:

(a) Hot water and cold air mode: including the first, third, and fifth views. At this time, the second expansion device 36 is controlled to be in the off state by the control unit 1, and the remaining members are operated according to the setting conditions of the control unit 1, and the water side is heated. The exchanger 32 starts the condensation of the high-pressure gaseous refrigerant from the compressor 31 by the first line 301 (that is, the refrigerant is not completely condensed into a high-pressure liquid state by the high-pressure gas state), and supplies heat to the water storage tank 21, and the refrigerant continues to flow through the first four. The square valve 33 and the second line 302 enter the outdoor heat exchanger 35. At this time, the control unit 1 controls the rotational speeds of the compressor 31, the pump 22, and the first fan 351 so that the sensing elements T1, T2. Predetermined temperature conditions such as .T8, and adjustment of operation according to hot water and cold air demand, so that the refrigerant is completely condensed into the high pressure liquid refrigerant in the outdoor heat exchanger 35, and then the flow is regulated by the third expansion line 34 via the first expansion device 34. The refrigerant is coexisted with the pressure drop to form a low temperature and low pressure liquid gas, and then evaporated from the fourth line 304 to the low pressure gas state via the indoor heat exchanger 37 to be returned to the compressor 31 by the fifth line 305. In the third figure, after the refrigerant passes through the water side heat exchanger 32, the second line 302 sequentially passes through the second square valve 38 and the first square valve 33 to enter the outdoor heat exchanger 35; In the figure, the high-pressure gaseous refrigerant enters the water-side heat exchanger 32 from the compressor 31 through the second square valve 38; and the operation mode of the third and fifth diagrams is that the refrigerant is returned to the compressor from the fifth line 305. At 31 o'clock, the second square valve 38 is passed first. From the above operation, it can form an operation mode that provides hot water + cold air.

(b) Cold air mode: including the second, fourth, and sixth diagrams. At this time, the control unit 1 controls the pump 22 and the second expansion device 36 to be in an off state, and the remaining components are operated according to the control unit 1 setting conditions. A pipeline 301 comes from compression The high-pressure gaseous refrigerant of the machine 31 flows through the water-side heat exchanger 32, and at this time, the water temperature of the water storage tank 21 has reached the set value or the highest value, so that the pump 22 is closed, and the refrigerant flows through the first square valve 33 and The second line 302 enters the outdoor heat exchanger 35 to condense the refrigerant into a high-pressure liquid refrigerant, and then the third line 303 adjusts the flow rate and the pressure drop through the first expansion device 34 to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the fourth Line 304 is vaporized into a low pressure gaseous state via indoor heat exchanger 37 and returned to compressor 31 by fifth line 305. In the fourth embodiment, after the refrigerant passes through the water side heat exchanger 32, the second line 302 passes through the second square valve 38 and the first square valve 33 to enter the outdoor heat exchanger 35; if it is the sixth In the figure, the high-pressure gaseous refrigerant enters the water-side heat exchanger 32 from the compressor 31 through the second square valve 38; and the operation mode of the fourth and sixth diagrams is that the refrigerant is returned to the compressor from the fifth line 305. At 31 o'clock, the second square valve 38 is passed first. From the above operation, it can constitute an operation mode that only provides air-conditioning.

Furthermore, please refer to another specific structural embodiment of Figures 7, 8, and 9, which has substantially the same structural composition as the above, but the difference means that the cold coal flows through the water side heat exchanger 32 and the first square. After the valve 33, it enters the outdoor heat exchanger 35 via the second expansion device 36 and returns to the compressor 31.

The structural composition is different: the refrigerant pipeline 30' includes a seventh pipeline 307, an eighth pipeline 308, a ninth pipeline 309, and a tenth pipeline 3010 (as shown in Figures 7, 8, and 9), and the compressor 31 is connected to the second expansion device 36 through the water side heat exchanger 32 and the first square valve 33 in sequence, and the second expansion device 36 is connected to the outdoor heat exchanger 35 by the eighth line 308. The exchanger 35 is connected back to the compressor 31 via a first square valve 33 in a ninth line 309. Moreover, one end of the tenth line 3010 is connected by the first expansion device 34 Connected to the eighth line 308, and the other end of the tenth line 3010 is connected to the ninth line 309 by the indoor heat exchanger 37.

Next, a second square valve 38 (as shown in FIG. 8) may be added to the first line 301 between the water side heat exchanger 32 and the first square valve 33, and the tenth line 3010 is connected to the second square valve 38. It is then connected to the ninth line 309. Furthermore, the second square valve 38 may also be disposed in the seventh line 307 between the water side heat exchanger 32 and the compressor 31 (as shown in FIG. 9), and the tenth line 3010 is also connected to the second square valve 38. It is then connected to the ninth line 309.

According to the above, its implementation model is as follows:

(c) Hot water mode: Including the seventh, eighth, and ninth diagrams, when the control unit 1 controls to operate the first expansion device 34 and the indoor heat exchanger 37 to be closed, the water side heat exchanger 32 will be derived from the seventh line 307. The high-pressure gaseous refrigerant of the compressor 31 is condensed into a liquid refrigerant and supplied with heat to the water storage tank 21 (again, as shown in Fig. 9, the high-pressure gaseous refrigerant output from the compressor 31 passes through the second square valve 38 and then to the water side heat exchanger 32. The refrigerant flows through the first four-way valve 33 to the second expansion device 36 to adjust the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant (again, FIG. 8 , after the refrigerant first flows through the second square valve 38) Then, the first four-way valve 33) is further evaporated from the eighth line 308 through the outdoor heat exchanger 35 into a low-pressure gas state, and then returned to the compressor 31 through the first square valve 33 via the ninth line 309, thereby forming only A mode of operation that provides hot water.

According to the structural composition and the implementation description of the specific embodiment, it can be seen that the present invention is rationalized by setting the flow direction of the cold coal through the control unit 1 in addition to the rationalization of the pipeline and the component arrangement, so as to be applicable to various operation modes of the cold and heat demand, and The important thing is that there will be no problem of excessive pressure drop and expansion, but the systemicity can be ruled out. The lack of efficiency can achieve the operational excellence of a multi-functional heat pump air conditioning mode.

In summary, the present invention has indeed improved the shortcomings of the existing multi-function heat pump air conditioning system, so that the energy efficiency of hot water and cold air, cold air, and hot water can achieve substantial high performance benefits, so it has indeed industrial utilization and novelty. Sex and progressive, in line with the patent requirements of the invention patent. However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, All should remain within the scope of the invention patent.

1‧‧‧Control unit

2‧‧ ‧ hot water unit

21‧‧ ‧ water bucket

22‧‧‧ pump

23‧‧‧Inlet pipe

24‧‧‧Draining tube

25‧‧‧ Flowmeter

3‧‧‧Hot Exchange Group

31‧‧‧Compressor

32‧‧‧Waterside heat exchanger

33‧‧‧First four square valve

34‧‧‧First expansion device

35‧‧‧Outdoor heat exchanger

351‧‧‧First fan

36‧‧‧Second expansion device

37‧‧‧ indoor heat exchanger

371‧‧‧second fan

30‧‧‧Refrigerant piping

301‧‧‧First pipeline

302‧‧‧Second pipeline

303‧‧‧ third pipeline

304‧‧‧fourth pipeline

305‧‧‧ fifth pipeline

306‧‧‧ sixth pipeline

Claims (15)

A heat pump air conditioning system comprising: a control unit; a hot water single water, having a water storage tank, a pump, a liquid inlet pipe and an liquid outlet pipe, wherein the water storage tank is connected by the liquid discharge pipe, and The inlet pipe is connected to the inlet pipe, the pump is connected to the outlet pipe, and the pump is electrically connected to the control unit; and a heat exchange group includes at least one electrically connected to the control unit a compressor, a water-side heat exchanger, a first square valve, a first expansion device, an outdoor heat exchanger, a second expansion device, and an indoor heat exchanger, and are connected by a refrigerant pipe a refrigerant circulation circuit, wherein the outlet pipe and the inlet pipe are connected to the water side heat exchanger, and a first fan and a second fan are respectively disposed at sides of the outdoor heat exchanger and the indoor heat exchanger, and The first fan and the second fan are also electrically connected to the control unit; and the refrigerant circuit includes at least a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, and a a fifth pipeline and a sixth pipeline, the compressor being connected to the first pipeline To the first four-party valve, and the water-side heat exchanger is connected to the first pipeline, the first four-square valve is connected to the outdoor heat exchanger by the second pipeline, and the outdoor heat exchanger is the third a pipeline connecting the first expansion device, and the first expansion device is connected to the indoor heat exchanger by the fourth pipeline, and the indoor heat exchanger is connected to the compressor by the fifth pipeline, and is further connected to one end of the sixth pipeline The first four square valve is connected to the third line by the second expansion device, and the other end of the sixth line is connected to the fifth line. The heat pump air conditioning system according to claim 1, wherein the water side heat exchanger is to be operated by the first line from the high pressure of the compressor when the second expansion device is controlled to be closed by the control unit. The gaseous refrigerant begins to condense and provides heat to the water storage tank, the refrigerant flows through the first square valve and enters the outdoor heat exchanger via the second pipeline, and the compressor, the pump, and the first fan are controlled by the control unit The rotation speed is adjusted according to the preset temperature condition of the plurality of temperature sensing elements, and the operation is adjusted according to the hot water and the cold air demand, and after the outdoor heat exchanger is completely condensed into the high pressure liquid refrigerant, the third pipeline passes the first An expansion device adjusts the flow rate and the pressure drop to form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth line is evaporated into a low pressure gas state through the indoor heat exchanger, and the fifth line is returned to the compressor to form heat. The mode of operation of water and air. The heat pump air conditioning system of claim 1, wherein the high pressure gaseous refrigerant from the compressor is controlled by the first pipeline when the pump is operated by the control unit to shut down the pump and the second expansion device Flowing through the water-side heat exchanger, the first four-square valve, and entering the outdoor heat exchanger via the second line to condense into a high-pressure liquid refrigerant, and adjusting the flow rate and pressure by the third line through the first expansion device The low temperature and low pressure liquid gas coexisted with the refrigerant, and the fourth line is evaporated into the low pressure gas state through the indoor heat exchanger to return to the compressor from the fifth line to form an operation mode in which only cold air is supplied. The heat pump air conditioning system of claim 1, wherein the first line between the water side heat exchanger and the first square valve is provided with a second square valve, and the fifth line is connected. The second square valve. The heat pump air conditioning system of claim 4, wherein the water side heat exchanger is to be operated by the first line from the compressor when the second expansion device is controlled to be closed by the control unit. The gaseous refrigerant begins to condense and provides heat to the water storage tank, and the refrigerant sequentially flows through the second square valve, the first square valve, and enters the outdoor heat exchanger via the second pipeline, and the control unit controls the The speed of the compressor, the pump, and the first fan are adjusted according to the preset temperature conditions of the plurality of temperature sensing elements, and according to the hot water and cold air demand, and after the outdoor heat exchanger is completely condensed into a high pressure liquid refrigerant And the third pipeline passes through the first expansion device to adjust the flow rate and the pressure drop to form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth pipeline is evaporated into a low pressure gas state through the indoor heat exchanger, and then the fifth pipeline passes through the fifth pipeline. The second four-way valve returns to the compressor to form an operational mode that provides hot water and cold air. The heat pump air conditioning system of claim 4, wherein the high pressure gaseous refrigerant from the compressor passes through the first pipeline when the pump is operated by the control unit to shut down the pump and the second expansion device Flowing through the water side heat exchanger, the second square valve, the first square valve, and entering the outdoor heat exchanger from the second line to condense into a high pressure liquid refrigerant, and the third line passes through the An expansion device adjusts the flow rate and the pressure drop to form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth line is evaporated into a low pressure gas state through the indoor heat exchanger, and then the fifth line returns to the second square valve through the second square valve The compressor forms an operating mode that only provides cold air. The heat pump air conditioning system of claim 1, wherein the first line between the water side heat exchanger and the compressor is further provided with a second four a square valve, and the fifth pipeline is connected to the second square valve. The heat pump air conditioning system of claim 7, wherein the water side heat exchanger is to be passed from the compressor by the first line when the second expansion device is controlled to be operated by the control unit. The high-pressure gaseous refrigerant of the second square valve begins to condense, and provides heat to the water storage tank, the refrigerant flows through the first square valve and enters the outdoor heat exchanger by the second pipeline, and the compression is controlled by the control unit The speed of the machine, the pump, and the first fan are adjusted according to the preset temperature conditions of the plurality of temperature sensing elements, and according to the hot water and cold air demand, and after the outdoor heat exchanger is completely condensed into a high pressure liquid refrigerant, The third pipeline passes through the first expansion device to adjust the flow rate and the pressure drop to form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth pipeline is evaporated into a low pressure gas state through the indoor heat exchanger, and then the fifth pipeline passes through the fifth pipeline. The second four-way valve returns to the compressor to form an operating mode that provides hot water and cold air. The heat pump air-conditioning system according to claim 7, wherein the high-pressure gaseous refrigerant from the compressor passes through the first pipeline when the pump is controlled by the control unit to shut down the pump and the second expansion device Flowing through the second square valve, the water side heat exchanger, the first square valve, and entering the outdoor heat exchanger via the second line to condense into a high pressure liquid refrigerant, through which the third line passes The first expansion device adjusts the flow rate and the pressure drop to form a low temperature and low pressure liquid gas coexisting refrigerant, and then the fourth line is evaporated into a low pressure gas state through the indoor heat exchanger, and then the fifth line is returned to the second square valve through the second line. The compressor forms an operating mode that only provides cold air. A heat pump air conditioning system comprising: a control unit; a hot water single water, having a water storage tank, a pump, a liquid inlet pipe and an liquid outlet pipe, the water storage tank is connected by the liquid discharge pipe, and the liquid inlet pipe is connected to The pump is connected to the discharge pipe, and the pump is electrically connected to the control unit; and a heat exchange group including at least one compressor electrically connected to the control unit, and a water side heat An exchanger, a first square valve, a first expansion device, an outdoor heat exchanger, a second expansion device, and an indoor heat exchanger, and connected by a refrigerant pipe to form a refrigerant circulation circuit, and the outlet a liquid pipe and a liquid inlet pipe are connected to the water side heat exchanger, and a first fan and a second fan are respectively disposed on the side of the outdoor heat exchanger and the indoor heat exchanger, and the first fan and the second fan are respectively The fan is also electrically connected to the control unit; and the refrigerant line includes at least a seventh pipeline, an eighth pipeline, a ninth pipeline and a tenth pipeline, and the compressor is connected to the seventh pipeline Connecting to the second through the water side heat exchanger and the first square valve Expanding device, and the second expansion device is connected to the outdoor heat exchanger by the eighth pipeline, the outdoor heat exchanger is connected to the compressor through the first square valve by the ninth pipeline, and the tenth One end of the line is connected to the eighth line through the first expansion device, and the other end of the tenth line is connected to the ninth line through the indoor heat exchanger. The heat pump air-conditioning system according to claim 10, wherein the water-side heat exchanger is to be operated by the seventh pipeline when the first expansion device and the indoor heat exchanger are operated by being controlled by the control unit. The high pressure gaseous refrigerant from the compressor condenses into a liquid refrigerant and provides heat to the a water storage tank, the refrigerant flows through the first four-way valve to the second expansion device to adjust the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the eight-line pipeline flows through the outdoor heat exchanger to evaporate into a low-pressure gas state. The ninth line is returned to the compressor through the first square valve to form an operation mode in which only hot water can be supplied. The heat pump air conditioning system of claim 10, wherein a second square valve is added to the first line between the water side heat exchanger and the first square valve, and the tenth pipeline is passed The second square valve is connected to the ninth line. The heat pump air-conditioning system according to claim 12, wherein the water-side heat exchanger is to be operated by the seventh pipeline when the first expansion device and the indoor heat exchanger are operated by being controlled by the control unit. The high-pressure gaseous refrigerant from the compressor condenses into a liquid refrigerant and supplies heat to the water storage tank, and the refrigerant sequentially flows through the second square valve, the first square valve, and the second expansion device adjusts the flow rate and the pressure drop. The low-temperature low-pressure liquid gas coexists with the refrigerant, and then the eighth pipeline flows through the outdoor heat exchanger to evaporate into a low-pressure gas state, and then returns to the compressor through the first square valve through the ninth pipeline, and the formation can only be provided. The mode of operation of hot water. The heat pump air conditioning system of claim 10, wherein a second square valve is added to the first line between the water side heat exchanger and the compressor, and the tenth pipeline passes the second A square valve is connected to the ninth line. The heat pump air conditioning system of claim 14, wherein the first expansion device and the indoor heat exchange are controlled by the control unit When the device is turned off and operated, the water-side heat exchanger condenses the high-pressure gaseous refrigerant from the compressor through the second four-party valve into a liquid refrigerant, and supplies heat to the water storage tank, and the refrigerant flows through the water. The first four-way valve and the second expansion device adjust the flow rate and the pressure drop to form a low-temperature low-pressure liquid-gas coexisting refrigerant, and then the eighth pipeline flows through the outdoor heat exchanger to evaporate into a low-pressure gas state, and then passes through the ninth pipeline. Returning to the compressor through the first four-way valve forms an operational mode in which only hot water can be supplied.