CN113983579A - Control method of air conditioning unit - Google Patents

Control method of air conditioning unit Download PDF

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Publication number
CN113983579A
CN113983579A CN202111263151.2A CN202111263151A CN113983579A CN 113983579 A CN113983579 A CN 113983579A CN 202111263151 A CN202111263151 A CN 202111263151A CN 113983579 A CN113983579 A CN 113983579A
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CN
China
Prior art keywords
air conditioning
temperature
conditioning unit
outdoor
indoor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111263151.2A
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Chinese (zh)
Other versions
CN113983579B (en
Inventor
张晓迪
王彦灵
王河坡
高强
许磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202111263151.2A priority Critical patent/CN113983579B/en
Publication of CN113983579A publication Critical patent/CN113983579A/en
Application granted granted Critical
Publication of CN113983579B publication Critical patent/CN113983579B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/04—Other domestic- or space-heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention relates to the technical field of air conditioners, and particularly provides a control method of an air conditioning unit, aiming at solving the problems that the existing air conditioning unit is easy to generate refrigerant noise and energy loss due to oil return. The air conditioning unit comprises a refrigerant circulation loop, a refrigerant heat exchange branch and a floor heating circulation loop, wherein the circulation of different loops is controlled by controlling the communication state of a first reversing valve and a second reversing valve so as to control the communication state of an indoor coil of the air conditioning unit, and based on the communication state, if the obtained mode setting instruction is an air conditioning heating mode, the air conditioning unit is controlled to simultaneously operate an air conditioning heating mode and a floor heating mode; if the mode setting instruction is not acquired, controlling the air conditioning unit to operate a floor heating mode; according to the invention, the oil return frequency of the air conditioning unit is effectively reduced by adjusting the heating operation mode of the air conditioning unit, so that the service life of the compressor is effectively ensured, and the refrigerant noise and energy loss of the air conditioning unit are effectively reduced.

Description

Control method of air conditioning unit
Technical Field
The invention relates to the technical field of air conditioner control, and particularly provides a control method of an air conditioning unit.
Background
The existing air conditioning unit usually needs to return oil regularly so as to enable the compressor oil retained in the refrigerant circulation loop to participate in circulation again along with the flowing of the refrigerant, and the service life of the compressor of the air conditioning unit is guaranteed. However, when the air conditioner set performs oil return, the refrigerant is usually not properly bypassed, so that noise and energy loss of the refrigerant are generated, and the use experience of the user is further affected.
Accordingly, there is a need in the art for a new control method for an air conditioning unit that solves the above problems.
Disclosure of Invention
The invention aims to solve the technical problems, namely, the problems that the existing air conditioning unit is easy to generate refrigerant noise and energy loss due to oil return.
The invention provides a control method of an air conditioning unit, the air conditioning unit comprises a refrigerant circulation loop, a refrigerant heat exchange branch and a floor heating circulation loop, wherein an indoor coil, a first reversing valve, a compressor, a second reversing valve, an outdoor coil and a first throttling component are arranged on the refrigerant circulation loop, one end of the refrigerant heat exchange branch is connected with the second reversing valve, the other end of the refrigerant heat exchange branch is connected between the indoor coil and the outdoor coil, a heat exchange unit is arranged on the refrigerant heat exchange branch, the heat exchange unit is arranged to enable the refrigerant heat exchange branch and the floor heating circulation loop to exchange heat through the heat exchange unit, the first reversing valve is arranged to enable the indoor coil to be selectively connected with an air inlet of the compressor or enable an air outlet of the compressor to be connected with the indoor coil, the second reversing valve is arranged to be selectively opened in a first communication state or a second communication state, the first communication state is set to enable the refrigerant heat exchange branch to be connected with the air inlet of the compressor and the air outlet of the compressor to be connected with the outdoor coil pipe, the second communication state is set to enable the outdoor coil pipe to be connected with the air inlet of the compressor and the air outlet of the compressor to be connected with the refrigerant heat exchange branch, and the control method comprises the following steps: acquiring a mode setting instruction of a control terminal before the air conditioning unit operates a heating working condition; if the obtained mode setting instruction is an air conditioner heating mode, controlling the air conditioning unit to simultaneously operate an air conditioning heating mode and a floor heating mode; and if the mode setting instruction is not acquired, controlling the air conditioning unit to operate a floor heating mode.
In a preferred embodiment of the above control method, the control method further includes: acquiring indoor temperature, outdoor temperature, target temperature of the air conditioning unit and outlet water temperature in the process of simultaneously operating an air conditioning heat mode and a floor heating heat mode by the air conditioning unit; and selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature.
In a preferred technical solution of the above control method, the step of "selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature, and the outlet water temperature" specifically includes: calculating a difference between the target temperature and the indoor temperature; calculating the difference between the outlet water temperature and the outdoor temperature; and selectively adjusting the operation mode of the air conditioning unit according to the difference value between the target temperature and the indoor temperature and the difference value between the outlet water temperature and the outdoor temperature.
In a preferred technical solution of the above control method, the step of "selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature and the difference between the outlet water temperature and the outdoor temperature" includes: and if the difference value between the target temperature and the indoor temperature is smaller than a first preset difference value and/or the difference value between the outlet water temperature and the outdoor temperature is larger than a second preset difference value, controlling the air conditioning unit to only operate a floor heating mode.
In a preferred technical solution of the above control method, the step of "selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature and the difference between the outlet water temperature and the outdoor temperature" further includes: and if the difference value between the target temperature and the indoor temperature is greater than or equal to the first preset difference value and the difference value between the outlet water temperature and the outdoor temperature is less than or equal to the second preset difference value, the operation mode of the air conditioning unit is not adjusted.
In a preferred technical solution of the above control method, after the step of "not adjusting the operation mode of the air conditioning unit", the control method further includes: acquiring the indoor temperature, the outdoor temperature, the target temperature of the air conditioning unit and the outlet water temperature again after a preset time; and selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature which are obtained again.
In a preferred technical solution of the above control method, the step of "selectively adjusting the operation mode of the air conditioning unit according to the re-acquired indoor temperature, the outdoor temperature, the target temperature, and the outlet water temperature" specifically includes: calculating the difference value between the target temperature and the indoor temperature which are obtained again; calculating the difference value between the outlet water temperature and the outdoor temperature which are obtained again; and selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature obtained again and the difference between the outlet water temperature and the outdoor temperature obtained again.
In a preferred technical solution of the control method, the step of selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature obtained again and the difference between the outlet water temperature and the outdoor temperature obtained again specifically includes: and if the difference value between the target temperature and the indoor temperature acquired again is smaller than a third preset difference value, and/or the difference value between the outlet water temperature and the outdoor temperature acquired again is larger than a fourth preset difference value, controlling the air conditioning unit to only operate a floor heating mode.
In a preferable technical scheme of the control method, the first preset value is 6 ℃; and/or the second preset value is 14 ℃.
In a preferable technical scheme of the control method, the preset time period is 30 minutes.
Under the condition of adopting the technical scheme, the control method only operates the air-conditioning heating mode when the mode setting instruction for operating the air-conditioning heating mode is obtained, otherwise, only operates the floor heating mode, and can also operate the floor heating mode in a linkage manner even if the air-conditioning heating mode is operated, and the air-conditioning unit has no oil return problem when operating the floor heating mode; based on the structure setting of above-mentioned air conditioning unit, the rethread is adjusted air conditioning unit's the mode of operation that heats to effectively reduce air conditioning unit's oil return frequency, and then can effectively guarantee compressor life simultaneously, can also effectively reduce air conditioning unit's refrigerant noise and energy loss, promote user's use and experience and feel.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the overall configuration of the air conditioning unit of the present invention in either the cooling mode or the dehumidification mode;
FIG. 2 is a schematic diagram of the overall structure of the air conditioning unit of the present invention in a floor heating mode;
FIG. 3 is a flow chart of the main steps of the control method of the present invention;
FIG. 4 is a flowchart illustrating the detailed steps of a preferred embodiment of the control method of the present invention;
reference numerals:
1. an indoor coil pipe; 110. an electronic expansion valve; 2. a three-way valve; 3. a compressor; 4. a four-way valve; 5. an outdoor coil pipe; 51. a first outdoor coil pipe; 52. a second outdoor coil pipe; 6. a first throttle member; 7. an economizer; 8. a refrigerant radiator; 9. a high-pressure liquid storage tank; 10. a liquid pipe stop valve; 11. an air pipe stop valve; 12. a filter; 13. an oil separator; 14. a gas-liquid separator; 15. a heat exchange unit; 16. a second throttling member; 17. a floor heating coil pipe; 18. a fan coil; 19. a water pump; 20. a water discharge outlet; 21. an expansion tank; 22. an electric heating device.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the present invention does not limit the specific type of the air conditioning unit, and technicians may set the specific application object of the air conditioning unit according to actual use requirements. Such changes in the application object do not depart from the basic principle of the present invention and belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, in the description of the preferred embodiments, unless otherwise expressly specified or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning mechanically or electrically connected, directly or indirectly through intervening elements, or internally or indirectly connected between two elements, and thus are not to be construed as limiting the invention. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, it should be noted that in the description of the present invention, although the steps of the control method of the present invention are described in a specific order in the present application, the order is not limited, and those skilled in the art may perform the steps in a different order without departing from the basic principle of the present invention.
Specifically, referring to fig. 1 and 2, fig. 1 is a schematic diagram of an overall structure of the air conditioning unit of the present invention in a cooling mode or a dehumidification mode, and fig. 2 is a schematic diagram of an overall structure of the air conditioning unit of the present invention in a floor heating mode. As shown in fig. 1 and 2, the air conditioning unit includes a refrigerant circulation loop, a refrigerant heat exchange branch and a floor heating circulation loop, the refrigerant circulation loop is provided with an indoor coil 1, a first reversing valve, a compressor 3, a second reversing valve, an outdoor coil 5 and a first throttling member 6, as an optimal setting mode, the first reversing valve is a three-way valve 2, the second reversing valve is a four-way valve 4, but this is not restrictive, the system of the air conditioning unit can also realize the purpose of reversing through a plurality of one-way valves, and technicians can set the system according to actual conditions.
In the preferred embodiment, the three-way valve 2 is set to selectively connect the indoor coil 1 to the air inlet of the compressor 3 or connect the air outlet of the compressor 3 to the indoor coil 1, the four-way valve 4 is set to selectively open in a first communication state or a second communication state, the first communication state is set to connect the refrigerant heat exchange branch to the air inlet of the compressor 3 and connect the air outlet of the compressor 3 to the outdoor coil 5, and the second communication state is set to connect the outdoor coil 5 to the air inlet of the compressor 3 and connect the air outlet of the compressor 3 to the refrigerant heat exchange branch.
Specifically, the three-way valve 2 includes a first opening (E port in the drawing), a second opening (S port in the drawing), and a third opening (D port in the drawing), and the three-way valve 2 is provided so as to be able to selectively communicate the E port and the S port or communicate the E port and the D port; wherein, the E port is connected with the indoor coil pipe 1, the S port is connected with the air inlet of the compressor 3, and the D port is connected with the air outlet of the compressor 3. The four-way valve 4 includes a first connection port (E 'port in the drawing), a second connection port (S' port in the drawing), a third connection port (D 'port in the drawing), and a fourth connection port (C' port in the drawing), the first connection state being set to enable the E 'port and the S' port to communicate with each other and the D 'port and the C' port to communicate with each other, the second connection state being set to enable the E 'port and the D' port to communicate with each other and the S 'port and the C' port to communicate with each other; the port E ' is connected with the refrigerant heat exchange branch, the port S ' is connected with the air inlet of the compressor 3, the port D ' is connected with the air outlet of the compressor 3, and the port C is connected with the outdoor coil pipe 5.
The concrete connection mode based on three-way valve 2 and cross valve 4 can effectively solve air conditioning unit's refrigerant flow noise problem and energy loss problem make air conditioning unit can not at the refrigeration in-process with warm up circulation circuit and carry out the heat transfer, warm up and heat the in-process and cut off indoor coil pipe 1 at ground to make the refrigerant not pass through indoor coil pipe 1 at the circulation in-process, and then avoid producing unnecessary refrigerant flow noise and energy consumption, promote user's use and experience.
Preferably, the economizer 7 is arranged on the refrigerant circulation circuit, the economizer 7 is arranged between the indoor coil pipe 1 and the outdoor coil pipe 5, in addition, a refrigerant radiator 8 is further arranged on the refrigerant circulation circuit, the refrigerant radiator 8 is arranged between the outdoor coil pipe 5 and the economizer 7, the first throttling component 6 is arranged between the outdoor coil pipe 5 and the refrigerant radiator 8, in addition, the outdoor coil pipe 5 comprises a first outdoor coil pipe 51 and a second outdoor coil pipe 52, and the first outdoor coil pipe 51 and the second outdoor coil pipe 52 are arranged in parallel. As a preferable arrangement, the first outdoor coil 51 and the left portion of the second outdoor coil 52 are arranged in parallel, and according to the refrigerant flowing direction shown in fig. 1, the first throttling component 6 is arranged at the downstream position of the first outdoor coil 51 and the left portion of the second outdoor coil 52, and the refrigerant firstly passes through the first outdoor coil 51 and the left portion of the second outdoor coil 52, then passes through the first throttling component 6, and then continuously passes through the right portion of the second outdoor coil 52, and then flows into the refrigerant radiator 8. Based on the common arrangement of the outdoor coil pipe 5, the first throttling component 6, the refrigerant radiator 8 and the economizer 7, the refrigerant can be fully converted, and the working efficiency of the air conditioning unit is improved.
Further, in the preferred embodiment, the refrigerant circulation loop is further provided with a high-pressure liquid storage tank 9, and the high-pressure liquid storage tank 9 is arranged between the indoor coil pipe 1 and the economizer 7. Still be provided with liquid pipe stop valve 10 and trachea stop valve 11 on the refrigerant circulation return, liquid pipe stop valve 10 sets up between indoor coil pipe 1 and high-pressure liquid storage pot 9, and trachea stop valve 11 sets up between indoor coil pipe 1 and three-way valve 2. And a plurality of filters 12 are arranged on the refrigerant circulating loop to prevent the ice blockage phenomenon. Further, an oil separator 13 is provided on the discharge port side of the compressor 3 and a gas-liquid separator 14 is provided on the intake port side of the refrigerant circulation circuit.
Specifically, in the preferred embodiment, the number of the indoor coils 1 is four, and the indoor coils 1 are arranged in parallel, and each indoor coil 1 is connected in series with an electronic expansion valve 110 to control the on/off of the four indoor coils 1. In addition, it should be noted that the present invention does not limit the specific types of the indoor coil 1, the outdoor coil 5 and the first throttling component 6, and the specific types of the indoor coil 1 and the outdoor coil 5 may be a plate heat exchanger, a double-pipe heat exchanger or a fin heat exchanger; the first throttling component 6 can be an electronic expansion valve, and also can be a thermal expansion valve or a floating ball regulating valve, and technicians can set the throttling according to the actual demand condition of the air conditioning unit.
Continuing to refer to fig. 1 and fig. 2, the upper end of the refrigerant heat exchange branch is connected to an E' port of the four-way valve 4, and the lower end is connected between the indoor coil 1 and the outdoor coil 5, in the preferred embodiment, the refrigerant heat exchange branch is specifically located between the high-pressure liquid storage tank 9 and the liquid pipe stop valve 10, the refrigerant heat exchange branch is provided with a heat exchange unit 15, and the heat exchange unit 15 is configured to enable the refrigerant heat exchange branch and the floor heating circulation loop to exchange heat through the heat exchange unit 15. It should be noted that, the present invention does not limit the specific structure of the heat exchange unit 15, as long as the refrigerant heat exchange branch and the floor heating circulation loop can exchange heat through the heat exchange unit 15; for example, the heat exchange unit 15 may be a shell-and-tube heat exchanger, the shell-and-tube heat exchanger includes two sets of heat exchange pipes arranged adjacently, and the refrigerant heat exchange branch and the floor heating circulation loop are respectively communicated with one set of heat exchange pipes to realize heat exchange.
In addition, a second throttling component 16 is further disposed on the refrigerant heat exchange branch, and the second throttling component 16 is preferably an electronic expansion valve, and can control the communication state and the refrigerant flow of the refrigerant heat exchange branch, so as to more effectively control the bypass state of the refrigerant heat exchange branch, and further effectively avoid generating unnecessary refrigerant flowing noise and energy loss. It should be noted that the present invention does not limit the specific type of the second throttling element 16, and the technician can set the second throttling element 16 according to the actual requirement, for example, the second throttling element 16 may also be a thermal expansion valve or a float regulating valve.
The floor heating circulating loop is provided with a floor heating coil 17 and two fan coils 18, the floor heating coil 17 and the two fan coils 18 are arranged in parallel, so that selective opening can be achieved according to actual use requirements, and unnecessary energy consumption is avoided. The floor heating circulating loop is also provided with a water pump 19 and a water outlet 20, and the water pump 19 and the water outlet 20 are respectively arranged on two sides of the fan coil 18. It should be noted that, the invention does not limit the specific structure, number and connection relationship of the floor heating coil 17 and the fan coil 18, and the technical personnel can set the connection relationship according to the actual use requirement. Further, an expansion tank 21 and an electric heating device 22 are further arranged on the floor heating circulation loop, and the expansion tank 21 is arranged between the heat exchange unit 15 and the water pump 19 so as to balance the water pressure in the floor heating circulation loop; an electric heating device 22 is disposed between the heat exchange unit 15 and the water discharge outlet 20 to heat water in the floor heating circulation loop when necessary.
Based on the structure of the air conditioning unit in the preferred embodiment, as shown in fig. 1, when the air conditioning unit is in an air-conditioning refrigeration mode or an air-conditioning dehumidification mode, the circulation sequence of the refrigerant is as follows: in this mode, the second throttling member 16 is closed to block the refrigerant heat exchange branch, and bypass of the refrigerant in the heat exchange unit 15 can be avoided by closing the second throttling member 16, so that the refrigerant can be prevented from bypassing the heat exchange unit 15. Of course, if a user needs to use the fan coil 18 for refrigeration, the fan coil 18 can enter and exit water through the water inlet and the water outlet 20 of the water pump 19, at this time, the second throttling component 16 can be opened to a certain opening degree, and the water is throttled and depressurized and then evaporated in the heat exchange unit 15, so that the fan coil 18 can discharge cold water to complete the refrigeration process, and the refrigerant flows through the refrigerant heat exchange branch, then enters the four-way valve 4 through the E 'port, and then flows into the gas-liquid separator 14 through the S' port to enter the refrigerant circulation again.
Based on the air conditioning unit structure in the preferred embodiment, as shown in fig. 2, when the air conditioning unit is in the floor heating mode, the circulation sequence of the refrigerant is as follows: the discharge port of the compressor 3 → the oil separator 13 → the four-way valve 4 (in the second communication state) → the heat exchange unit 15 → the second throttling member 16 → the economizer 7 → the refrigerant radiator 8 → the first throttling member 6 → the outdoor coil 5 → the four-way valve 4 → the gas-liquid separator 14 → the intake port of the compressor 3. In this mode, the electronic expansion valve 110 is in a closed state, so as to effectively prevent the indoor coil 1 of the air conditioning unit from being in a bypass state in the floor heating process, thereby eliminating the refrigerant flowing noise generated by the indoor coil 1 and avoiding the generation of unnecessary energy loss. Of course, if the user needs the fan coil 18 to heat or needs domestic hot water, hot water can be discharged from the water discharge outlet 20. In addition, if in the floor heating mode, the user needs the air conditioning unit to operate the air conditioning heating mode, so that the port E of the three-way valve 2 can be communicated with the port D, and then the high-temperature and high-pressure refrigerant gas ejected from the exhaust port of the compressor 3 can simultaneously pass through the indoor coil 1 and the heat exchange unit 15, and respectively complete condensation heat release in the indoor coil 1 and the heat exchange unit 15 to become a liquid refrigerant, then the liquid refrigerant is converged, flows through the outdoor coil 5 to complete evaporation, and then returns to the compressor 3.
Referring next to fig. 3, fig. 3 is a flow chart of the main steps of the control method of the present invention. As shown in fig. 3, based on the air conditioning unit described in the above embodiment, the control method of the present invention includes the following steps:
s1: acquiring a mode setting instruction of a control terminal before the air conditioning unit operates a heating working condition;
s2: if the obtained mode setting instruction is the air conditioning heating mode, controlling the air conditioning unit to simultaneously operate an air conditioning heating mode and a floor heating mode;
s3: and if the mode setting instruction is not acquired, controlling the air conditioning unit to operate a floor heating mode.
In step S1, before the air conditioning unit operates in the heating mode, a mode setting command of the control terminal is obtained. It should be noted that the present invention does not limit the type of the control terminal, and the control terminal may be the original of the air conditioning unit, or may be separately configured to execute the control method of the present invention, for example, the control terminal may be a mobile phone that is in communication connection with the air conditioning unit, or may be the original control panel of the air conditioning unit, and a technician may set the control terminal according to actual use requirements.
In steps S2 and S3, if the acquired mode setting instruction is to operate the air conditioning heating mode, controlling the air conditioning unit to operate the air conditioning heating mode, and simultaneously operating the floor heating mode in a linkage manner, that is, controlling the electronic expansion valve 110 and the second throttling member 16 to be opened simultaneously; and if the mode setting instruction is not acquired, controlling the air conditioning unit to only operate the floor heating mode, namely controlling the second throttling component 16 to be opened and the electronic expansion valve 110 to be closed. It should be noted that the present invention does not limit the type of the acquired mode setting instruction, and the mode setting instruction may be text information, voice information, or picture information, and the technician may set the mode setting instruction according to the actual use requirement.
Referring next to fig. 4, fig. 4 is a flowchart illustrating specific steps of a preferred embodiment of the control method of the present invention. As shown in fig. 4, based on the air conditioning unit described in the above embodiment, the control method of the preferred embodiment of the present invention includes the following steps:
s101: acquiring a mode setting instruction of a control terminal before the air conditioning unit operates a heating working condition;
s102: if the obtained mode setting instruction is the air conditioning heating mode, controlling the air conditioning unit to simultaneously operate an air conditioning heating mode and a floor heating mode;
s103: if the mode setting instruction is not acquired, controlling the air conditioning unit to operate a floor heating mode;
s104: acquiring indoor temperature, outdoor temperature, target temperature of an air conditioning unit and outlet water temperature;
s105: calculating the difference between the target temperature and the indoor temperature, and recording the difference as a first difference;
s106: calculating the difference between the water temperature and the outdoor temperature, and recording the difference as a second difference;
s107: judging whether the first difference value is larger than or equal to a first preset difference value or not and whether the second difference value is smaller than or equal to a second preset difference value or not; if not, executing step S108; if yes, go to step S109;
s108: controlling the air conditioning unit to only operate a floor heating mode;
s109: the operation mode of the air conditioning unit is not adjusted;
s110: acquiring the indoor temperature, the outdoor temperature, the target temperature of the air conditioning unit and the outlet water temperature again after a preset time;
s111: calculating the difference value between the target temperature and the indoor temperature which are obtained again, and recording the difference value as a third difference value;
s112: calculating the difference value between the outlet water temperature and the outdoor temperature obtained again, and recording as a fourth difference value;
s113: and if the third difference is smaller than the third preset difference and/or the fourth difference is larger than the fourth preset difference, controlling the air conditioning unit to only operate the floor heating mode.
In step S101, before the air conditioning unit operates the heating condition, a mode setting instruction of the control terminal is obtained. It should be noted that the present invention does not limit the type of the control terminal, and the control terminal may be the original of the air conditioning unit, or may be separately configured to execute the control method of the present invention, for example, the control terminal may be a mobile phone that is in communication connection with the air conditioning unit, or may be the original control panel of the air conditioning unit, and a technician may set the control terminal according to actual use requirements.
Next, in step S102, if the obtained mode setting instruction is to operate the air conditioning heating mode, controlling the air conditioning unit to operate the air conditioning heating mode, and simultaneously operating the floor heating mode in a linkage manner, that is, controlling the electronic expansion valve 110 and the second throttling member 16 to be opened simultaneously; in step S103, if the mode setting instruction is not obtained, the air conditioning unit is controlled to operate only the floor heating mode, that is, the second throttling element 16 is controlled to be opened, and the electronic expansion valve 110 is controlled to be closed. It should be noted that the present invention does not limit the type of the acquired mode setting instruction, and the mode setting instruction may be text information, voice information, or picture information, and the technician may set the mode setting instruction according to the actual use requirement.
Next, in step S104, in the process of operating the air conditioning heating mode and the floor heating mode simultaneously by the unit, an indoor temperature, an outdoor temperature, and a target temperature and a water outlet temperature of the air conditioning unit are obtained, where the water outlet temperature is a water outlet temperature at the water outlet 20, and the operating mode of the air conditioning unit is selectively adjusted according to the indoor temperature, the outdoor temperature, the target temperature, and the water outlet temperature. It should be noted that, the present invention does not limit any specific adjustment manner of the operation mode of the air conditioning unit, and the adjustment may be performed according to differences between different parameters of the indoor temperature, the outdoor temperature, the target temperature, and the outlet water temperature, or according to a ratio, which is not restrictive. As a specific implementation manner, the operation mode of the air conditioning unit is adjusted according to the difference between different parameters of the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature, so as to quickly judge the operation mode of the air conditioning unit, and further effectively reduce refrigerant noise and energy loss caused by oil return.
Specifically, in steps S105 to S109, a difference between the target temperature and the indoor temperature is calculated and recorded as a first difference; calculating the difference between the outlet water temperature and the outdoor temperature, and recording as a second difference; and selectively adjusting the operation mode of the air conditioning unit according to the first difference and the second difference. It should be noted that, the specific determination method for adjusting the operation mode of the air conditioning unit according to the first difference and the second difference is not limited in the present invention, and may be a comparison between the first difference and the second difference, or a comparison between the first difference and the second difference and other preset differences, which are not restrictive; preferably, the embodiment compares the first difference value, the second difference value and other preset difference values to more accurately adjust the operation mode of the air conditioning unit, so as to effectively reduce the oil return frequency of the air conditioning unit, thereby reducing the refrigerant noise and the energy loss.
Preferably, whether the first difference is greater than or equal to a first preset difference and whether the second difference is less than or equal to a second preset difference is judged; if not, controlling the air conditioning unit to only operate a floor heating mode; and if so, not adjusting the operation mode of the air conditioning unit, namely continuously operating the air conditioning heating mode and the floor heating mode at the same time. It should be noted that, the present invention does not limit the specific values of the target temperature, the first preset difference and the second preset difference, and a technician may set the values according to the actual heating requirement of a user. As a specific implementation manner, the first preset difference in this embodiment is 6 ℃ and the second preset difference is 14 ℃. Of course, if the target temperature set by the user is higher than a preset target temperature (provided by the air conditioning unit), that is, the user needs a higher heating requirement, the specific value of the first preset difference is correspondingly smaller than 6 ℃, and the specific value of the second preset difference is correspondingly larger than 14 ℃; if the target temperature set by the user is lower than the preset target temperature, that is, the user needs lower heating requirement, the specific value of the first preset difference is correspondingly greater than 6 ℃, and the specific value of the second preset difference is correspondingly less than 14 ℃.
Further, in step S110, after the operation mode of the air conditioning unit is not adjusted, that is, the air conditioning heating mode and the floor heating mode continue to be operated simultaneously, the indoor temperature, the outdoor temperature, and the target temperature and the outlet water temperature of the air conditioning unit are obtained again after a preset time period. It should be noted that, as an optimal setting mode, the specific duration of the preset duration is not limited, and the preset duration in this embodiment is 30 minutes, so that the air conditioning unit can be switched to the operation mode of only operating the floor heating mode in time, and the oil return frequency of the air conditioning unit is further effectively reduced; of course, a technician can set the specific duration of the preset duration according to the actual heating operation condition of the air conditioning unit.
Next, in steps S111 to S113, a difference between the target temperature and the indoor temperature obtained again is calculated and recorded as a third difference; calculating the difference value between the outlet water temperature and the outdoor temperature obtained again, and recording the difference value as a fourth difference value; and selectively adjusting the operation mode of the air conditioning unit according to the third difference and the fourth difference.
Specifically, if at least one condition that the third difference is smaller than a third preset difference and the fourth difference is larger than a fourth preset difference is met, the air conditioning unit is controlled to be switched to the operation mode of only operating the floor heating mode. In addition, it should be noted that, the specific values of the third preset difference and the fourth preset difference are not limited in any way, and a technician can set the values according to actual use requirements; as a preferred setting mode, the third preset difference is greater than the first preset difference, and the fourth preset difference is smaller than the second preset difference, so that the air conditioning unit can only operate the floor heating mode as soon as possible, the oil return frequency of the air conditioning unit is reduced, and further the refrigerant noise and the energy loss are reduced.
In addition, as an optimal control mode, under the condition that the air conditioning unit operates in the heating working condition, once the air conditioning unit is switched to the condition that only the floor heating mode is operated, the air conditioning heating mode is not operated any more until the air conditioning unit is restarted next time and the air conditioning heating mode can be operated under the condition that the operation condition is met, so that the oil return frequency of the air conditioning unit is further effectively reduced, the refrigerant noise and the energy loss of the air conditioning unit are further effectively reduced, and the use experience of a user is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A control method of an air conditioning unit is characterized in that the air conditioning unit comprises a refrigerant circulation loop, a refrigerant heat exchange branch and a floor heating circulation loop,
the refrigerant circulating loop is provided with an indoor coil pipe, a first reversing valve, a compressor, a second reversing valve, an outdoor coil pipe and a first throttling component,
one end of the refrigerant heat exchange branch is connected with the second reversing valve, the other end of the refrigerant heat exchange branch is connected between the indoor coil and the outdoor coil, a heat exchange unit is arranged on the refrigerant heat exchange branch, the heat exchange unit is arranged to enable the refrigerant heat exchange branch and the floor heating circulation loop to exchange heat through the heat exchange unit,
the first reversing valve is configured to selectively connect the indoor coil to the compressor inlet or the compressor outlet to the indoor coil,
the second reversing valve is set to be selectively opened in a first communication state or a second communication state, the first communication state is set to enable the refrigerant heat exchange branch to be connected with the air inlet of the compressor and the air outlet of the compressor to be connected with the outdoor coil pipe, the second communication state is set to enable the outdoor coil pipe to be connected with the air inlet of the compressor and the air outlet of the compressor to be connected with the refrigerant heat exchange branch,
the control method comprises the following steps:
acquiring a mode setting instruction of a control terminal before the air conditioning unit operates a heating working condition;
if the obtained mode setting instruction is an air conditioner heating mode, controlling the air conditioning unit to simultaneously operate an air conditioning heating mode and a floor heating mode;
and if the mode setting instruction is not acquired, controlling the air conditioning unit to operate a floor heating mode.
2. The control method according to claim 1, characterized by further comprising:
acquiring indoor temperature, outdoor temperature, target temperature of the air conditioning unit and outlet water temperature in the process of simultaneously operating an air conditioning heat mode and a floor heating heat mode by the air conditioning unit;
and selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature.
3. The control method according to claim 2, wherein the step of selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature, and the outlet water temperature specifically comprises:
calculating a difference between the target temperature and the indoor temperature;
calculating the difference between the outlet water temperature and the outdoor temperature;
and selectively adjusting the operation mode of the air conditioning unit according to the difference value between the target temperature and the indoor temperature and the difference value between the outlet water temperature and the outdoor temperature.
4. The control method according to claim 3, wherein the step of selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature and the difference between the outlet water temperature and the outdoor temperature comprises:
and if the difference value between the target temperature and the indoor temperature is smaller than a first preset difference value and/or the difference value between the outlet water temperature and the outdoor temperature is larger than a second preset difference value, controlling the air conditioning unit to only operate a floor heating mode.
5. The control method of claim 4, wherein the step of selectively adjusting the operating mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature and the difference between the outlet water temperature and the outdoor temperature further comprises:
and if the difference value between the target temperature and the indoor temperature is greater than or equal to the first preset difference value and the difference value between the outlet water temperature and the outdoor temperature is less than or equal to the second preset difference value, the operation mode of the air conditioning unit is not adjusted.
6. The control method according to claim 5, characterized in that, after the step of "not adjusting the operation mode of the air conditioning unit", the control method further comprises:
acquiring the indoor temperature, the outdoor temperature, the target temperature of the air conditioning unit and the outlet water temperature again after a preset time;
and selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature which are obtained again.
7. The control method according to claim 6, wherein the step of selectively adjusting the operation mode of the air conditioning unit according to the indoor temperature, the outdoor temperature, the target temperature and the outlet water temperature obtained again specifically includes:
calculating the difference value between the target temperature and the indoor temperature which are obtained again;
calculating the difference value between the outlet water temperature and the outdoor temperature which are obtained again;
and selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature obtained again and the difference between the outlet water temperature and the outdoor temperature obtained again.
8. The control method according to claim 7, wherein the step of selectively adjusting the operation mode of the air conditioning unit according to the difference between the target temperature and the indoor temperature obtained again and the difference between the outlet water temperature and the outdoor temperature obtained again specifically includes:
and if the difference value between the target temperature and the indoor temperature acquired again is smaller than a third preset difference value, and/or the difference value between the outlet water temperature and the outdoor temperature acquired again is larger than a fourth preset difference value, controlling the air conditioning unit to only operate a floor heating mode.
9. The control method according to any one of claims 4 to 8, characterized in that the first preset value is 6 ℃; and/or
The second preset value is 14 ℃.
10. The control method according to any one of claims 6 to 8, characterized in that the preset time period is 30 minutes.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115183317A (en) * 2022-07-07 2022-10-14 珠海格力电器股份有限公司 Compressor frequency regulation and control method and device and multi-connected temperature control system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961826A1 (en) * 1998-12-30 2000-07-06 Valeo Climatisation Evaporator/heat exchanger for motor vehicle air conditioning/heating equipment formed of plates bonded by random pattern of dimples
JP2003042598A (en) * 2001-07-30 2003-02-13 Daikin Ind Ltd Split flow muffler and air conditioner employing the same
CN102788383A (en) * 2012-08-27 2012-11-21 程宝华 Modular intelligent heat exchanger unit
CN110779233A (en) * 2019-10-25 2020-02-11 杭州鸿雁管道系统科技有限公司 Air source heat pump air conditioner floor heating hot water unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961826A1 (en) * 1998-12-30 2000-07-06 Valeo Climatisation Evaporator/heat exchanger for motor vehicle air conditioning/heating equipment formed of plates bonded by random pattern of dimples
JP2003042598A (en) * 2001-07-30 2003-02-13 Daikin Ind Ltd Split flow muffler and air conditioner employing the same
CN102788383A (en) * 2012-08-27 2012-11-21 程宝华 Modular intelligent heat exchanger unit
CN110779233A (en) * 2019-10-25 2020-02-11 杭州鸿雁管道系统科技有限公司 Air source heat pump air conditioner floor heating hot water unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115183317A (en) * 2022-07-07 2022-10-14 珠海格力电器股份有限公司 Compressor frequency regulation and control method and device and multi-connected temperature control system

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