CN107560216B - Hydraulic heat exchange device for air conditioner cold and hot water unit and air conditioner cold and hot water unit - Google Patents
Hydraulic heat exchange device for air conditioner cold and hot water unit and air conditioner cold and hot water unit Download PDFInfo
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- CN107560216B CN107560216B CN201710757671.6A CN201710757671A CN107560216B CN 107560216 B CN107560216 B CN 107560216B CN 201710757671 A CN201710757671 A CN 201710757671A CN 107560216 B CN107560216 B CN 107560216B
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Abstract
The invention discloses a hydraulic heat exchange device for an air conditioner cold and hot water unit and the air conditioner cold and hot water unit, wherein the hydraulic heat exchange device comprises: the first end and the second end of the refrigerant water heat exchanger are correspondingly connected with the water inlet end and the water outlet end respectively; the heat exchange assembly comprises first to sixth ports, wherein the first port and the second port are correspondingly connected with a third end and a fourth end of the chilled water heat exchanger respectively; the control unit controls the four-way valve to change direction and controls the communication between the ports of the heat exchange assemblies so as to enable the air conditioner cold and hot water unit to operate in different working modes, thereby not only enabling the unit to realize multifunctional operation, but also having simple structure, low cost and easy installation.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a hydraulic heat exchange device for an air conditioner cold and hot water unit and the air conditioner cold and hot water unit.
Background
At present, multifunctional air-conditioning water heaters in the market, such as air-conditioning water heaters, air-conditioning floor heating machines and the like, need more valve bodies to switch the flow direction of a refrigerant due to more operation modes. Common manufacturers realize switching of system operation modes in the outdoor units, but the outdoor units have complex structures, increased valve bodies, and even one more connecting pipe set than the normal outdoor units, so that the outdoor units of the multifunctional air-conditioning water heater product cannot be used commonly with the outdoor units of common air conditioners, and further the corresponding outdoor units need to be redeveloped, thereby not only increasing development and production costs of the manufacturers, but also increasing market installation costs and manpower due to the increase of pipelines.
Disclosure of Invention
The present invention is directed to solving at least one of the problems in the art to some extent.
Therefore, the first purpose of the present invention is to provide a hydraulic heat exchange device for an air-conditioning cold and hot water unit, which can realize multifunctional operation of the unit by adding the device without changing an outdoor unit and an indoor unit, and has the advantages of simple structure, low cost and easy installation.
The second purpose of the invention is to provide an air-conditioning cold and hot water unit.
In order to achieve the above object, a first embodiment of the present invention provides a hydraulic heat exchange device for an air conditioner chiller-heater unit, the air conditioner chiller-heater unit includes an outdoor unit and an indoor unit, the outdoor unit includes a four-way valve, and the hydraulic heat exchange device includes: the first end and the second end of the refrigerant water heat exchanger are correspondingly connected with the water inlet end and the water outlet end respectively; the heat exchange assembly comprises first to sixth ports, wherein the first port and the second port are correspondingly connected with the third end and the fourth end of the chilled water heat exchanger respectively, the third port and the fourth port are correspondingly connected with the low-pressure pipeline and the high-pressure pipeline of the outdoor unit respectively, and the fifth port and the sixth port are correspondingly connected with the first end and the second end of the indoor unit respectively; and the control unit is respectively connected with the four-way valve and the heat exchange assembly, and controls the four-way valve to be communicated with the ports of the heat exchange assembly in a reversing manner so as to enable the air conditioner cold and hot water unit to operate in different working modes.
According to the hydraulic heat exchange device for the air conditioner cold and hot water unit, the first end and the second end of the refrigerant water heat exchanger are correspondingly connected with the water inlet end and the water outlet end respectively, the first port and the second port of the heat exchange assembly are correspondingly connected with the third end and the fourth end of the refrigerant water heat exchanger respectively, the third port and the fourth port are correspondingly connected with the low-pressure pipeline and the high-pressure pipeline of the outdoor unit respectively, the fifth port and the sixth port are correspondingly connected with the first end and the second end of the indoor unit respectively, and the control unit controls the four-way valve to change direction and the communication between the ports of the heat exchange assembly so that the air conditioner cold and hot water unit can operate in different working modes. Therefore, under the condition that the outdoor unit and the indoor unit are not changed, the multifunctional operation of the unit can be realized by additionally arranging the device, and the multifunctional operation device is simple in structure, low in cost and easy to install.
In addition, the hydraulic heat exchange device for the air-conditioning cold and hot water unit according to the above embodiment of the invention may further have the following additional technical features:
according to one embodiment of the invention, the heat exchange assembly comprises: one end of the first reversing valve is used as a first port of the heat exchange assembly and is connected with a third end of the chilled water heat exchanger, and the other end of the first reversing valve is used as a third port and a fifth port of the heat exchange assembly and is correspondingly connected with a low-pressure pipeline of the outdoor unit and a first end of the indoor unit respectively; and one end of the second reversing valve is used as a second port of the heat exchange assembly and is connected with a fourth end of the chilled water heat exchanger, and the other end of the second reversing valve is used as a fourth port and a sixth port of the heat exchange assembly and is correspondingly connected with the high-pressure pipeline of the outdoor unit and the second end of the indoor unit respectively.
According to one embodiment of the invention, the heat exchange assembly further comprises: one end of the third reversing valve is connected with the other end of the first reversing valve, and the other end of the third reversing valve is used as a fifth port of the heat exchange assembly and connected with the first end of the indoor unit; and one end of the fourth reversing valve is connected with the other end of the second reversing valve, and the other end of the fourth reversing valve is used as a sixth port of the heat exchange assembly and is connected with the second end of the indoor unit.
According to one embodiment of the invention, the working modes of the air-conditioning cold and hot water unit comprise one or more of a heating mode, a cooling mode, a hot water heating mode, a cold water cooling mode, a heating and hot water heating mode and a cooling and cold water cooling mode.
According to an embodiment of the present invention, when the air conditioner cold and hot water unit is in the heating mode or the cooling mode, the control unit controls the first reversing valve and the second reversing valve to be in a closed state, controls the third reversing valve and the fourth reversing valve to be in an open state, and controls the four-way valve to be in a power-on state or a power-off state.
According to an embodiment of the present invention, when the air conditioner cold and hot water unit is in the hot water heating mode or the cold water cooling mode, the control unit controls the first reversing valve and the second reversing valve to be in an open state, controls the third reversing valve and the fourth reversing valve to be in a closed state, and controls the four-way valve to be in a power-on state or a power-off state.
According to one embodiment of the invention, when the air-conditioning cold and hot water unit is in the heating and hot water heating mode or the cooling and cold water cooling mode, the control unit controls the first reversing valve, the second reversing valve, the third reversing valve, the fourth reversing valve and the four-way valve to be in an open state, and controls the four-way valve to be in a power-on state or a power-off state.
According to one embodiment of the invention, the first direction valve, the second direction valve, the third direction valve and the fourth direction valve are electronic expansion valves or solenoid valves.
According to an embodiment of the present invention, the above-mentioned hydraulic heat exchange device for an air-conditioning cold and hot water unit further includes: the water pump is arranged between the first end of the refrigerant water heat exchanger and the water inlet end, and the control unit controls the water pump to adjust the water inlet amount of the refrigerant water heat exchanger.
In order to achieve the above object, a second aspect of the present invention provides an air conditioner water chiller-heater unit, including: an outdoor unit including a four-way valve; an indoor unit; one or more of the hydraulic heat exchange devices.
According to the air-conditioning cold and hot water unit provided by the embodiment of the invention, the unit can realize multifunctional operation through the hydraulic heat exchange device under the condition that an outdoor unit and an indoor unit are not changed, and the air-conditioning cold and hot water unit is simple in structure, low in cost and easy to install.
Drawings
FIG. 1a is a schematic structural diagram of a hydraulic heat exchange device for an air-conditioning cold and hot water unit according to one embodiment of the invention;
FIG. 1b is a schematic structural diagram of a hydraulic heat exchange device for an air-conditioning cold and hot water unit according to another embodiment of the invention;
FIG. 2 is a refrigerant flow diagram of an air conditioner chiller/heater unit operating in a cooling mode according to an embodiment of the present invention;
FIG. 3 is a refrigerant flow diagram of an air conditioning chiller/heater unit operating in a heating mode according to an embodiment of the present invention;
FIG. 4 is a refrigerant flow diagram of an air conditioner chiller/heater unit operating in a chilled water mode according to an embodiment of the present invention;
fig. 5 is a refrigerant flow diagram when the air conditioner chiller/heater unit operates in the hot water heating mode according to an embodiment of the present invention;
FIG. 6 is a refrigerant flow diagram of an air conditioning chiller/heater unit operating in cooling and chilled water modes in accordance with an embodiment of the present invention;
FIG. 7 is a refrigerant flow diagram of an air conditioning chiller/heater unit operating in heating and hot water mode according to an embodiment of the present invention; and
fig. 8 is a schematic structural view of an air conditioner hot and cold water unit according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The hydraulic heat exchange device for the air-conditioning cold and hot water unit and the air-conditioning cold and hot water unit provided by the embodiment of the invention are described below with reference to the attached drawings.
Fig. 1a is a schematic structural diagram of a hydraulic heat exchange device for an air conditioning hot and cold water unit according to an embodiment of the invention, and fig. 1b is a schematic structural diagram of a hydraulic heat exchange device for an air conditioning hot and cold water unit according to another embodiment of the invention.
In an embodiment of the present invention, as shown in fig. 1a and 1b, the air conditioner chiller/heater unit may include an outdoor unit 10 and an indoor unit 20, and the outdoor unit 10 may include a four-way valve ST.
Specifically, as shown in fig. 1a and 1b, the outdoor unit 10 may include: a compressor 11, a liquid storage tank 12, an outdoor heat exchanger 13, an outdoor throttling element 14, a four-way valve ST, a high-pressure cut-off valve 15 and a low-pressure cut-off valve 16. Wherein, the exhaust port of the compressor 11 is connected with one end of the outdoor heat exchanger 13 through the four-way valve ST, the other end of the outdoor heat exchanger 13 is connected with the high-pressure stop valve 15 on the high-pressure pipeline through the outdoor throttling element 14, the return air port of the compressor 11 is connected with one end of the liquid storage tank 12, and the other end of the liquid storage tank 12 is connected with the low-pressure stop valve 16 on the low-pressure pipeline through the four-way valve ST. The indoor unit 20 may include a plurality of indoor sub-units, such as indoor sub-units 21, 22, and 23.
The hydro heat exchange device 30 may include: a chilled water heat exchanger 31, a heat exchange assembly 32 and a control unit (not specifically shown in the figure). Wherein, the first end and the second end of the refrigerant water heat exchanger 31 are respectively and correspondingly connected with the water inlet end and the water outlet end. The heat exchange assembly 32 includes first to sixth ports, wherein the first and second ports are respectively and correspondingly connected to the third and fourth ends of the chilled water heat exchanger 31, the third and fourth ports are respectively and correspondingly connected to the low-pressure pipeline and the high-pressure pipeline of the outdoor unit 10, and the fifth and sixth ports are respectively and correspondingly connected to the first and second ends of the indoor unit 20. The control unit is respectively connected with the four-way valve ST and the heat exchange assembly 32, and the control unit controls the reversing of the four-way valve ST and the communication between the ports of the heat exchange assembly 32 so as to enable the air-conditioning cold and hot water unit to operate in different working modes.
According to one embodiment of the present invention, as shown in FIG. 1a, the heat exchange assembly 32 comprises: one end of the first reversing valve SV1 serving as a first port of the heat exchange assembly 32 is connected with a third end of the refrigerant water heat exchanger 31, and the other end of the first reversing valve SV1 serving as a third port and a fifth port of the heat exchange assembly 32 are correspondingly connected with a low-pressure pipeline of the outdoor unit 10 and a first end of the indoor unit 20 respectively; one end of a second reversing valve SV2 is connected to the fourth end of the refrigerant water heat exchanger 31 as the second port of the heat exchange assembly 32, and the other end of the second reversing valve SV2 is connected to the high-pressure pipeline of the outdoor unit 10 and the second end of the indoor unit 20 as the fourth port and the sixth port of the heat exchange assembly 32, respectively.
According to another embodiment of the present invention, as shown in fig. 1b, the heat exchange assembly 32 may further include: a third direction changing valve SV3 and a fourth direction changing valve SV4, one end of the third direction changing valve SV3 is connected to the other end of the first direction changing valve SV1, and the other end of the third direction changing valve SV3 is connected to the first end of the indoor unit 20 as a fifth port of the heat exchanging assembly 32; one end of a fourth direction switching valve SV4 is connected to the other end of the second direction switching valve SV2, and the other end of the fourth direction switching valve SV4 is connected to the second end of the indoor unit 20 as the sixth port of the heat exchange assembly 32.
In an embodiment of the present invention, the operation modes of the air conditioner cold and hot water unit include one or more of a heating mode, a cooling mode, a hot water heating mode, a cold water cooling mode, a heating and hot water heating mode, and a cooling and cold water cooling mode.
In practical applications, as shown in fig. 1b, when the heat exchange assembly 32 includes the first direction valve SV1, the second direction valve SV2, the third direction valve SV3 and the fourth direction valve SV4, the control unit operates the air conditioner chiller in different operation modes by controlling the four-way valve ST, the first direction valve SV1, the second direction valve SV2, the third direction valve SV3 and the fourth direction valve SV 4. When the heat exchange assembly 32 includes the first direction changing valve SV1 and the second direction changing valve SV2, as shown in fig. 1a, the control unit may operate the air conditioner chiller/heater unit in different operation modes by controlling the four-way valve ST, the first direction changing valve SV1 and the second direction changing valve SV2, and the indoor throttling element in the indoor unit 20, that is, the indoor throttling element in the indoor unit 20 may replace the functions of the third direction changing valve SV3 and the fourth direction changing valve SV4, thereby omitting the first direction changing valve SV3 and the second direction changing valve SV 4.
In particular, the hydraulic heat exchange device shown in fig. 1b is used to describe in detail how the control unit controls the reversing valve and the heat exchange assembly to operate the unit in different operation modes.
According to one embodiment of the present invention, when the air conditioning chiller/heater unit is in a heating mode or a cooling mode, the control unit controls the first direction valve SV1 and the second direction valve SV2 to be in a closed state, and controls the third direction valve SV3 and the fourth direction valve SV4 to be in an open state, and controls the four-way valve ST to be in a power-on state or a power-off state.
Specifically, as shown in fig. 2, when the air conditioning hot and cold water unit is in the cooling mode, the control unit controls the first direction changing valve SV1 and the second direction changing valve SV2 to be in a closed state, and controls the third direction changing valve SV3 and the fourth direction changing valve SV4 to be in an open state, and controls the four-way valve ST to be in a power-on state (the first port b and the second port c of the four-way valve ST are communicated, and the third port m and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port a of the compressor 11 enters the outdoor heat exchanger 13 through the first port b and the second port c of the four-way valve ST, is condensed and releases heat by the outdoor heat exchanger 13 to become a high-pressure liquid refrigerant, then enters the hydraulic heat exchanger 30 after being throttled and depressurized by the outdoor throttling element 14, enters the indoor unit 20 through the fourth direction valve SV4 in the hydraulic heat exchanger 30, is evaporated and absorbs heat by the indoor heat exchanger in the indoor unit 20 to become a low-temperature and low-pressure gaseous refrigerant, enters the outdoor unit 10 through the third direction valve SV3, enters the liquid storage tank 12 through the third port m and the fourth port n of the four-way valve ST in the outdoor unit 10, is separated from the gaseous refrigerant and the liquid refrigerant by the liquid storage tank 12, and returns to the compressor 11 through the return port o of the compressor 11, thereby completing the refrigeration cycle. The refrigerant flow direction in the whole refrigeration cycle process is as follows: a-b-c-d-e-f-g-h-i-j-k-l-m-n-o.
As shown in fig. 3, when the air conditioning chiller/heater unit is in the heating mode, the control unit controls the first direction valve SV1 and the second direction valve SV2 to be in a closed state, and controls the third direction valve SV3 and the fourth direction valve SV4 to be in an open state, and controls the four-way valve ST to be in a power-off state (the first port b and the third port m of the four-way valve ST are communicated, and the second port c and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port a of the compressor 11 enters the hydraulic heat exchanger 30 through the first port b and the third port m of the four-way valve ST, flows into the indoor unit 20 through the third direction changing valve SV3 of the hydraulic heat exchanger 30, then the refrigerant is condensed by the indoor heat exchanger in the indoor unit 20 to release heat and become high-pressure liquid refrigerant, the high-pressure liquid refrigerant enters the outdoor unit 10 through a fourth reversing valve SV4, is throttled and decompressed by an outdoor throttling element 14 in the outdoor unit 10 and then enters the outdoor heat exchanger 13, the refrigerant is evaporated and absorbs heat by the outdoor heat exchanger 13 to become low-temperature and low-pressure gaseous refrigerant, the low-temperature and low-pressure gaseous refrigerant enters the liquid storage tank 12 through a second port c and a fourth port n of the four-way valve ST, the gas refrigerant and the liquid refrigerant are separated by the accumulator 12, and the gas refrigerant returns to the compressor 11 through the return port o of the compressor 11, thereby completing the heating cycle. The refrigerant flow direction in the whole heating cycle process is as follows: a-b-m-l-k-j-i-h-g-f-e-d-c-n-o.
According to one embodiment of the present invention, when the air conditioning hot and cold water unit is in a hot water mode or a cold water mode, the control unit controls the first direction valve SV1 and the second direction valve SV2 to be in an open state, and controls the third direction valve SV3 and the fourth direction valve SV4 to be in a closed state, and controls the four-way valve ST to be in a power-on state or a power-off state.
Specifically, as shown in fig. 4, when the air conditioning hot and cold water unit is in the cooling water mode, the control unit controls the first direction changing valve SV1 and the second direction changing valve SV2 to be in an open state, and controls the third direction changing valve SV3 and the fourth direction changing valve SV4 to be in a closed state, and controls the four-way valve ST to be in a power-on state (the first port b and the second port c of the four-way valve ST are communicated, and the third port m and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port a of the compressor 11 enters the outdoor heat exchanger 13 through the first port b and the second port c of the four-way valve ST, is condensed and releases heat by the outdoor heat exchanger 13 to become a high-pressure liquid refrigerant, then enters the hydraulic heat exchanger 30 after being throttled and depressurized by the outdoor throttling element 14, enters the refrigerant water heat exchanger 31 after passing through the second direction changing valve SV2 in the hydraulic heat exchanger 30, becomes a low-pressure gaseous refrigerant after being evaporated and absorbed by the refrigerant water heat exchanger 31 (absorbing heat of water flowing into the hydraulic heat exchanger 30 from the water inlet end so as to lower the temperature of water flowing out of the water outlet end), enters the outdoor unit 10 through the first direction changing valve SV1, enters the liquid storage tank 12 through the third port m and the fourth port n of the four-way valve ST in the outdoor unit 10, separates the gaseous refrigerant from the liquid refrigerant by the liquid storage tank 12, and returns to the compressor 11 through the return port o of the compressor 11, thereby completing the refrigeration water cycle. The refrigerant flow direction in the whole refrigeration water circulation process is as follows: a-b-c-d-e-f-p-q-s-r-m-n-o.
As shown in fig. 5, when the air conditioning hot and cold water unit is in the hot water heating mode, the control unit controls the first direction valve SV1 and the second direction valve SV2 to be in an open state, controls the third direction valve SV3 and the fourth direction valve SV4 to be in a closed state, and controls the four-way valve ST to be in a power-off state (the first port b and the third port m of the four-way valve ST are communicated, and the second port c and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port a of the compressor 11 enters the hydraulic heat exchanger 30 through the first port b and the third port m of the four-way valve ST, flows into the refrigerant water heat exchanger 31 through the first direction changing valve SV1 of the hydraulic heat exchanger 30, is condensed and releases heat (the released heat is provided to the water flowing into the hydraulic heat exchanger 30 from the water inlet end so as to raise the temperature of the water flowing out of the water outlet end) through the refrigerant water heat exchanger 31 to become a high-pressure liquid refrigerant, the high-pressure liquid refrigerant enters the outdoor unit 10 through the second direction changing valve SV2, is throttled and depressurized through the outdoor throttling element 14 in the outdoor unit 10 to enter the outdoor heat exchanger 13, is evaporated and absorbs heat through the outdoor heat exchanger 13 to become a low-temperature and low-pressure gaseous refrigerant, the low-temperature and low-pressure gaseous refrigerant enters the liquid storage tank 12 through the second port c and the fourth port n of the four, the gaseous refrigerant returns to the compressor 11 through the return air port o of the compressor 11, thereby completing the heating water cycle. The refrigerant flow direction in the whole hot water making circulation process is as follows: a-b-m-r-s-q-p-f-e-d-c-n-o.
According to one embodiment of the present invention, when the air conditioning cold and hot water unit is in a heating and hot water heating mode or a cooling and cold water cooling mode, the control unit controls the first to fourth direction switching valves SV1, SV2, SV3 and SV4 to be in an open state and controls the four-way valve ST to be in a power-on state or a power-off state.
Specifically, as shown in fig. 6, when the air conditioning hot and cold water unit is in the cooling and cold water mode, the control unit controls the first to fourth direction switching valves SV1, SV2, SV3 and SV4 to be all in the on state, and controls the four-way valve ST to be in the power-on state (the first port b and the second port c of the four-way valve ST are communicated, and the third port m and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port a of the compressor 11 enters the outdoor heat exchanger 13 through the first port b and the second port c of the four-way valve ST, is condensed and released heat by the outdoor heat exchanger 13 to become a high-pressure liquid refrigerant, and then enters the hydraulic heat exchanger 30 after being throttled and depressurized by the outdoor throttling element 14, wherein the refrigerant in the hydraulic heat exchanger 30 is divided into two paths: one path of the refrigerant enters the indoor unit 20 through a fourth reversing valve SV4, is evaporated and absorbs heat through an indoor heat exchanger in the indoor unit 20 to become a low-temperature and low-pressure gaseous refrigerant, and enters the outdoor unit 10 through a third reversing valve SV 3; the other path of the refrigerant enters the refrigerant water heat exchanger 31 through the second reversing valve SV2 to be evaporated and absorb heat (the heat of the water flowing into the hydraulic heat exchange device 30 from the water inlet end is absorbed, so that the temperature of the water flowing out of the water outlet end is reduced), and then the refrigerant becomes low-pressure gaseous refrigerant, and the low-pressure gaseous refrigerant enters the outdoor unit 10 through the first reversing valve SV 1. After the two paths of refrigerants are converged, the refrigerant enters the liquid storage tank 12 through the third port m and the fourth port n of the four-way valve ST in the outdoor unit 10, the gaseous refrigerant and the liquid refrigerant are separated through the liquid storage tank 12, and the gaseous refrigerant returns to the compressor 11 through the air return port o of the compressor 11, so that the refrigeration and the refrigeration water circulation are completed. The refrigerant flow direction in the whole refrigeration and refrigeration water circulation process is as follows:
as shown in fig. 7, when the air conditioning hot and cold water unit is in the heating and hot water mode, the control unit controls the first to fourth direction switching valves SV1, SV2, SV3 and SV4 to be in the on state, and controls the four-way valve ST to be in the power-off state (the first port b and the third port m of the four-way valve ST are communicated, and the second port c and the fourth port n are communicated). At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port a of the compressor 11 passes through the four-way valveThe first port b and the third port m of the valve ST enter the hydraulic heat exchange device 30, and the refrigerant in the hydraulic heat exchange device 30 is divided into two paths: one path of the refrigerant flows into the indoor unit 20 through a third reversing valve SV3, and then is condensed and released heat through an indoor heat exchanger in the indoor unit 20 to form a high-pressure liquid refrigerant, and the high-pressure liquid refrigerant enters the outdoor unit 10 through a fourth reversing valve SV 4; the other path of the refrigerant flows into the condensed water heat exchanger 31 through the first reversing valve SV1 to be condensed and released heat (the released heat is provided for water flowing into the hydraulic heat exchange device 30 from the water inlet end, so that the temperature of the water flowing out of the water outlet end is increased) to form a high-pressure liquid refrigerant, and the high-pressure liquid refrigerant enters the outdoor unit 10 through the second reversing valve SV 2. The two paths of refrigerants are converged, throttled and depressurized by an outdoor throttling element 14 in the outdoor unit 10, then enter the outdoor heat exchanger 13, are evaporated and absorb heat by the outdoor heat exchanger 13 to form a low-temperature and low-pressure gaseous refrigerant, the low-temperature and low-pressure gaseous refrigerant enters the liquid storage tank 12 through a second port c and a fourth port n of the four-way valve ST, the gaseous refrigerant and the liquid refrigerant are separated by the liquid storage tank 12, and the gaseous refrigerant returns to the compressor 11 through a return air port o of the compressor 11, so that the heating cycle is completed. The refrigerant flow direction in the whole heating cycle process is as follows:
in conclusion, the control unit controls the reversing valve and the heat exchange assembly, so that the unit can operate in different working modes, including a heating mode, a refrigerating mode, a water heating mode, a water refrigerating mode, a heating and water heating mode and a refrigerating and water refrigerating mode, and multifunctional operation of the unit is realized.
It should be noted that, in the embodiment of the present invention, the first direction valve SV1, the second direction valve SV2, the third direction valve SV3, and the fourth direction valve SV4 are electronic expansion valves or electromagnetic valves (such as a one-way valve or a two-way valve), and the specific details are not limited herein.
In addition, as shown in fig. 1a and 1b, the hydraulic heat exchange device for an air-conditioning cold and hot water unit may further include: the water pump 33, the water pump 33 sets up between the first end of refrigerant water heat exchanger 31 and the end of intaking, and the control unit is through controlling water pump 33 with adjusting the inflow of refrigerant water heat exchanger 31.
In addition, respective cut-off valves such as P1, P2, P3 and P4 may be further provided at the third port, the fourth port, the fifth port and the sixth port of the heat exchange assembly 32, and respective cut-off valves P6 and P5 may be provided at the first end and the second end of the refrigerant water heat exchanger 31, thereby facilitating the connection of the hydraulic heat exchange device to the outdoor unit and the indoor unit.
In summary, according to the hydraulic heat exchange device for the air conditioner cold and hot water unit in the embodiment of the present invention, the first end and the second end of the refrigerant water heat exchanger are respectively and correspondingly connected to the water inlet end and the water outlet end, the first port and the second port of the heat exchange assembly are respectively and correspondingly connected to the third end and the fourth end of the refrigerant water heat exchanger, the third port and the fourth port are respectively and correspondingly connected to the low-pressure pipeline and the high-pressure pipeline of the outdoor unit, the fifth port and the sixth port are respectively and correspondingly connected to the first end and the second end of the indoor unit, and the four-way valve is controlled by the control unit to change direction and communicate with the ports of the heat exchange assembly, so that the air conditioner cold and hot water unit operates in different operation modes. Therefore, under the condition that the outdoor unit and the indoor unit are not changed, the multifunctional operation of the unit can be realized by additionally arranging the device, and the multifunctional operation device is simple in structure, low in cost and easy to install.
Based on the embodiment, the invention further provides an air conditioner cold and hot water unit.
Fig. 8 is a schematic structural view of an air conditioner hot and cold water unit according to an embodiment of the present invention. As shown in fig. 8, the air conditioning chiller/heater unit may include: outdoor unit 10, indoor unit 20 and hydraulic heat exchange device. The number of the hydraulic heat exchange devices can be set according to actual needs, for example, as shown in fig. 8, the hydraulic heat exchange device can include a hydraulic heat exchange device 30 and a hydraulic heat exchange device 40.
Specifically, as shown in fig. 8, the outdoor unit 10 may include: a compressor 11, a liquid storage tank 12, an outdoor heat exchanger 13, an outdoor throttling element 14, a four-way valve ST, a high-pressure cut-off valve 15 and a low-pressure cut-off valve 16. Wherein, the exhaust port of the compressor 11 is connected with one end of the outdoor heat exchanger 13 through the four-way valve ST, the other end of the outdoor heat exchanger 13 is connected with the high-pressure stop valve 15 on the high-pressure pipeline through the outdoor throttling element 14, the return air port of the compressor 11 is connected with one end of the liquid storage tank 12, and the other end of the liquid storage tank 12 is connected with the low-pressure stop valve 16 on the low-pressure pipeline through the four-way valve ST. The indoor unit 20 may include a plurality of indoor sub-units, such as indoor sub-units 21, 22, and 23.
The hydro heat exchange device 30 may include: a chilled water heat exchanger 31, a heat exchange assembly 32 and a control unit (not specifically shown in the figure). Wherein, the first end and the second end of the refrigerant water heat exchanger 31 are respectively and correspondingly connected with the water inlet end and the water outlet end. The heat exchange assembly 32 includes first to sixth ports, wherein the first and second ports are respectively and correspondingly connected to the third and fourth ends of the chilled water heat exchanger 31, the third and fourth ports are respectively and correspondingly connected to the low-pressure pipeline and the high-pressure pipeline of the outdoor unit 10, and the fifth and sixth ports are respectively and correspondingly connected to the first and second ends of the indoor unit 20. The control unit is respectively connected with the four-way valve ST and the heat exchange assembly 32, and the control unit controls the reversing of the four-way valve ST and the communication between the ports of the heat exchange assembly 32 so as to enable the air-conditioning cold and hot water unit to operate in different working modes.
The hydro heat exchange device 40 may include: a chilled water heat exchanger 31, a heat exchange assembly 32 and a control unit (not specifically shown in the figure). Wherein, the first end and the second end of the refrigerant water heat exchanger 31 are respectively and correspondingly connected with the water inlet end and the water outlet end. The heat exchange assembly 32 includes first to sixth ports, wherein the first and second ports are respectively and correspondingly connected to the third and fourth ends of the chilled water heat exchanger 31, the third and fourth ports are respectively and correspondingly connected to the low-pressure pipeline and the high-pressure pipeline of the outdoor unit 10, and the fifth and sixth ports are respectively and correspondingly connected to the first and second ends of the indoor unit 20. The control unit is respectively connected with the four-way valve ST and the heat exchange assembly 32, and the control unit controls the reversing of the four-way valve ST and the communication between the ports of the heat exchange assembly 32 so as to enable the air-conditioning cold and hot water unit to operate in different working modes.
According to one embodiment of the present invention, as shown in fig. 8, the heat exchange assembly 32 may include: one end of the first reversing valve SV1 serving as a first port of the heat exchange assembly 32 is connected with a third end of the refrigerant water heat exchanger 31, and the other end of the first reversing valve SV1 serving as a third port and a fifth port of the heat exchange assembly 32 are correspondingly connected with a low-pressure pipeline of the outdoor unit 10 and a first end of the indoor unit 20 respectively; one end of a second reversing valve SV2 is connected to the fourth end of the refrigerant water heat exchanger 31 as the second port of the heat exchange assembly 32, and the other end of the second reversing valve SV2 is connected to the high-pressure pipeline of the outdoor unit 10 and the second end of the indoor unit 20 as the fourth port and the sixth port of the heat exchange assembly 32, respectively.
It should be noted that details not disclosed in the air conditioning chiller/heater unit according to the embodiment of the present invention refer to details disclosed in the hydraulic heat exchanging device for an air conditioning chiller/heater unit according to the embodiment of the present invention, and detailed descriptions thereof are omitted here.
According to the air-conditioning cold and hot water unit provided by the embodiment of the invention, the unit can realize multifunctional operation through the hydraulic heat exchange device under the condition that an outdoor unit and an indoor unit are not changed, and the air-conditioning cold and hot water unit is simple in structure, low in cost and easy to install.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In addition, in the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides a water conservancy heat transfer device for air conditioner hot and cold water unit, its characterized in that, air conditioner hot and cold water unit includes outdoor unit and indoor unit, outdoor unit includes the cross valve, water conservancy heat transfer device includes:
the first end and the second end of the refrigerant water heat exchanger are correspondingly connected with the water inlet end and the water outlet end respectively;
the heat exchange assembly comprises first to sixth ports, wherein the first port and the second port are correspondingly connected with the third end and the fourth end of the chilled water heat exchanger respectively, the third port and the fourth port are correspondingly connected with the low-pressure pipeline and the high-pressure pipeline of the outdoor unit respectively, and the fifth port and the sixth port are correspondingly connected with the first end and the second end of the indoor unit respectively;
the control unit is respectively connected with the four-way valve and the heat exchange assembly, and the control unit controls the four-way valve to be communicated with the port of the heat exchange assembly in a reversing way so as to enable the air conditioner cold and hot water unit to operate in different working modes;
wherein, heat exchange assembly includes:
one end of the first reversing valve is used as a first port of the heat exchange assembly and is connected with a third end of the chilled water heat exchanger, and the other end of the first reversing valve is used as a third port and a fifth port of the heat exchange assembly and is correspondingly connected with a low-pressure pipeline of the outdoor unit and a first end of the indoor unit respectively;
and one end of the second reversing valve is used as a second port of the heat exchange assembly and is connected with a fourth end of the chilled water heat exchanger, and the other end of the second reversing valve is used as a fourth port and a sixth port of the heat exchange assembly and is correspondingly connected with the high-pressure pipeline of the outdoor unit and the second end of the indoor unit respectively.
2. The hydraulic heat exchange device for an air conditioning chiller/heater unit as set forth in claim 1, wherein said heat exchange assembly further comprises:
one end of the third reversing valve is connected with the other end of the first reversing valve, and the other end of the third reversing valve is used as a fifth port of the heat exchange assembly and connected with the first end of the indoor unit;
and one end of the fourth reversing valve is connected with the other end of the second reversing valve, and the other end of the fourth reversing valve is used as a sixth port of the heat exchange assembly and is connected with the second end of the indoor unit.
3. The hydrokinetic heat exchange device for an air conditioning chiller/heater unit as set forth in claim 2, wherein the operating modes of the air conditioning chiller/heater unit include one or more of a heating mode, a cooling mode, a heating water mode, a cooling water mode, a heating and heating water mode, and a cooling and cooling water mode.
4. The hydrokinetic heat exchange device for an air conditioning chiller/heater unit as defined in claim 3, wherein when the air conditioning chiller/heater unit is in the heating mode or the cooling mode, the control unit controls the first reversing valve and the second reversing valve to be in a closed state, controls the third reversing valve and the fourth reversing valve to be in an open state, and controls the four-way valve to be in a power-on state or a power-off state.
5. The hydraulic heat exchange device for an air conditioning chiller/heater unit as claimed in claim 3, wherein when the air conditioning chiller/heater unit is in the hot water heating mode or the cold water cooling mode, the control unit controls the first direction valve and the second direction valve to be in an open state, controls the third direction valve and the fourth direction valve to be in a closed state, and controls the four-way valve to be in a power-on state or a power-off state.
6. The hydraulic heat exchange device for an air conditioner chiller/heater unit as claimed in claim 3, wherein when the air conditioner chiller/heater unit is in the heating and heating water mode or the cooling and cooling water mode, the control unit controls the first to fourth directional control valves to be in an open state and controls the four-way valve to be in a power-on state or a power-off state.
7. The hydraulic heat exchange device for an air conditioning chiller-heater unit as claimed in claim 2, wherein the first direction valve, the second direction valve, the third direction valve and the fourth direction valve are electronic expansion valves or solenoid valves.
8. The hydraulic heat exchange device for an air conditioning chiller/heater unit as claimed in claim 1, further comprising:
the water pump is arranged between the first end of the refrigerant water heat exchanger and the water inlet end, and the control unit controls the water pump to adjust the water inlet amount of the refrigerant water heat exchanger.
9. An air conditioner chiller/heater unit, comprising:
an outdoor unit including a four-way valve;
an indoor unit;
one or more hydraulic heat exchange devices according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757671.6A CN107560216B (en) | 2017-08-29 | 2017-08-29 | Hydraulic heat exchange device for air conditioner cold and hot water unit and air conditioner cold and hot water unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757671.6A CN107560216B (en) | 2017-08-29 | 2017-08-29 | Hydraulic heat exchange device for air conditioner cold and hot water unit and air conditioner cold and hot water unit |
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| CN107560216A CN107560216A (en) | 2018-01-09 |
| CN107560216B true CN107560216B (en) | 2020-02-28 |
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| CN110030774A (en) * | 2019-04-22 | 2019-07-19 | 珠海格力电器股份有限公司 | Heat exchange system and air conditioner hot water unit |
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| US6668572B1 (en) * | 2002-08-06 | 2003-12-30 | Samsung Electronics Co., Ltd. | Air conditioner having hot/cold water producing device |
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| CN101788208A (en) * | 2009-12-25 | 2010-07-28 | 广东美的电器股份有限公司 | Air source heat pump air-conditioning water chiller/heater unit |
| CN102155820A (en) * | 2011-03-29 | 2011-08-17 | 海尔集团公司 | Multipurpose air-conditioner hot water system |
| CN102997499A (en) * | 2012-12-28 | 2013-03-27 | 东南大学 | Air source heat pump device capable of producing cold water and hot mater at same time |
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| US6668572B1 (en) * | 2002-08-06 | 2003-12-30 | Samsung Electronics Co., Ltd. | Air conditioner having hot/cold water producing device |
| CN101644508A (en) * | 2009-06-30 | 2010-02-10 | 广东美的电器股份有限公司 | Multi-connected air conditioner multifunctional system for cold water and hot water |
| CN101788208A (en) * | 2009-12-25 | 2010-07-28 | 广东美的电器股份有限公司 | Air source heat pump air-conditioning water chiller/heater unit |
| CN102155820A (en) * | 2011-03-29 | 2011-08-17 | 海尔集团公司 | Multipurpose air-conditioner hot water system |
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| CN107560216A (en) | 2018-01-09 |
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