CN114738852A - Liquid accumulation preventing multi-connected floor heating air conditioner and control method thereof - Google Patents
Liquid accumulation preventing multi-connected floor heating air conditioner and control method thereof Download PDFInfo
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- CN114738852A CN114738852A CN202210445535.4A CN202210445535A CN114738852A CN 114738852 A CN114738852 A CN 114738852A CN 202210445535 A CN202210445535 A CN 202210445535A CN 114738852 A CN114738852 A CN 114738852A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 136
- 239000007788 liquid Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009825 accumulation Methods 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 47
- 238000009826 distribution Methods 0.000 claims description 20
- 238000004378 air conditioning Methods 0.000 claims description 10
- 210000003437 trachea Anatomy 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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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
- 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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
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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
- F24F5/0096—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 combined with domestic apparatus
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a liquid accumulation preventing multi-connected floor heating air conditioner and a control method thereof, wherein the liquid accumulation preventing multi-connected floor heating air conditioner comprises a compressor, an air pipe, a liquid pipe, a floor heating pipe and a plurality of indoor units, a refrigerant in the air pipe can enter the liquid pipe through the plurality of heat exchange pipes, the plurality of indoor units are respectively arranged on the plurality of heat exchange pipes, an indoor unit electronic expansion valve is arranged on a pipeline between each indoor unit and the liquid pipe, the air pipe and the liquid pipe are connected through the floor heating pipe, a control box for limiting shunt is also arranged, the heating pipe and the plurality of indoor units are both connected with the air pipe through the shunt control box, the opening degree of the floor heating electronic expansion valve and an indoor unit electromagnetic valve in the control box is controlled through shunt, the floor heating air conditioner is prevented from running through the refrigerant flowing direction when the floor heating air conditioner is heated, enough refrigerant flows through the floor heating pipe, and the floor heating effect is improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a liquid accumulation preventing multi-split floor heating air conditioner and a control method thereof.
Background
After the air conditioner indoor unit and the fluorine floor heating pipe are simultaneously installed on the multi-split air conditioner, the air conditioner indoor unit and the fluorine floor heating pipe cannot be started simultaneously in consideration of effects and use habits of customers during heating operation. The reason is that the air conditioner is not needed to be turned on for heating when the floor heating is turned on according to product development and customer use habits, and the heating effect of the air conditioner and the floor heating is poor due to the fact that the indoor side heat dissipation capacity is increased when the floor heating and the air conditioner are turned on simultaneously.
Patent document No. CN103032923A discloses a central air-conditioning system, which includes an outdoor host, an indoor host, a fan coil, and a floor heating system, and the system connection mode is as follows: outdoor host computer passes through the copper pipe and is connected with indoor host computer, and indoor host computer passes through the PPR pipe and is connected with fan coil and floor heating device, and 1 ~ 16 indoor host computers can be connected simultaneously to an outdoor host computer, and a set of floor heating device can be connected many fan coil units simultaneously to an indoor host computer, carries cold water or carries hot water and send to in the fan coil unit or in the floor heating system through automatic solenoid valve switching-over.
In the prior art, the refrigerant can still flow to the indoor host machine when flowing to the floor heating device, so that the refrigerant can be gradually accumulated in the heat exchanger of the indoor unit of the air conditioner, the circulated refrigerant of the system is reduced, and the heating effect of the floor heating device is poor.
Disclosure of Invention
In order to solve the problem that liquid is accumulated on the indoor unit side due to the fact that part of refrigerant flows to the indoor unit in the floor heating operation process of the multi-split floor heating air conditioner in the prior art, the invention aims to provide the multi-split floor heating air conditioner capable of preventing liquid accumulation and the control method of the multi-split floor heating air conditioner.
In order to achieve the purpose, the invention adopts the following technical scheme: a control method of a floor heating air conditioner comprises a compressor and an air pipe, the system comprises a liquid pipe, a ground heating pipe, a plurality of indoor units, a flow distribution control box and a control box, wherein a refrigerant in the air pipe can enter the liquid pipe through the heat exchange pipes, the indoor units are respectively arranged on the heat exchange pipes, an indoor unit electronic expansion valve is arranged on the pipeline between each indoor unit and the liquid pipe, the air pipe and the liquid pipe are connected through the ground heating pipe, the flow distribution control box comprises a first flow distribution pipe and a second flow distribution pipe, one end of the air pipe is connected with an inlet of the first flow distribution pipe, a first outlet of the first flow distribution pipe is connected with inlets of the heat exchange pipes, a second outlet of the first flow distribution pipe is connected with an inlet of the ground heating pipe, an indoor unit electromagnetic valve is arranged at a first outlet of the first flow distribution pipe, an inlet of the second flow distribution pipe is connected with an outlet of the ground heating pipe, an outlet of the second flow distribution pipe is connected with the liquid pipe, and the second flow distribution pipe enables the ground heating electronic expansion valve to be arranged; the specific steps of the floor heating process are as follows:
step 1), a control system sends a floor heating instruction;
step 2), closing an electromagnetic valve of the indoor unit and a plurality of electronic expansion valves of the indoor unit, and opening the electronic expansion valves of the floor heating unit;
and 3) starting a compressor, delivering a high-temperature and high-pressure gaseous refrigerant into an air pipe through a four-way valve by the compressor, wherein the refrigerant in the air pipe cannot flow into the heat exchange pipe from the first shunt pipe because the electromagnetic valve of the indoor unit is in a closed state, so that the refrigerant in the air pipe can only enter the floor heating pipe through the second outlet of the first shunt pipe, the refrigerant after heat exchange in the floor heating pipe enters the second shunt pipe, the refrigerant becomes a low-temperature liquid refrigerant after passing through the floor heating electronic expansion valve and then enters a liquid inlet pipe from the outlet of the second shunt pipe, and the refrigerant entering the liquid inlet pipe returns into the compressor again.
Preferably, in the step 3), the control system dynamically adjusts the opening degree of the floor heating electronic expansion valve to control the indoor temperature.
As preferred, the reposition of redundant personnel control box still includes the box body, the equal fixed mounting of first reposition of redundant personnel and second reposition of redundant personnel is in the box body, first reposition of redundant personnel includes first branch pipe, the second branch pipe, warm up feed liquor pipe and indoor set feed liquor pipe, the one end of first branch pipe links to each other with the trachea, the other end of first branch pipe, the one end of second branch pipe and the one end of warm up the feed liquor pipe are through the three-way pipe intercommunication, the other end of feed liquor pipe and the import intercommunication of ground heating pipe, the other end of second branch pipe and the one end of indoor set feed liquor pipe are through indoor set solenoid valve intercommunication, the other end of indoor set feed liquor pipe is through the import intercommunication of connecting pipe and a plurality of heat exchange tubes.
Preferably, the second branch pipe comprises a third branch pipe and a fourth branch pipe, one end of the third branch pipe is communicated with one end of the fourth branch pipe through a floor heating electronic expansion valve, the other end of the third branch pipe is connected with an outlet of a floor heating pipe, and the other end of the fourth branch pipe is connected with the liquid pipe.
Preferably, the outdoor unit is arranged on the liquid pipe, and the refrigerant after heat exchange in the floor heating pipe flows through the outdoor unit and then flows back to the compressor.
Preferably, the system further comprises a gas-liquid separator, and the gas-liquid separator is arranged on a pipeline connecting the outdoor unit and the compressor.
Preferably, the system also comprises a four-way valve, the compressor is connected with a first port of the four-way valve through a pipeline, one end of the air pipe is connected with a second open port of the four-way valve, one end of the liquid pipe is connected with a third port of the four-way valve, a fourth port of the four-way valve is connected with the gas-liquid separator through a pipeline, and the gas-liquid separator is connected with the compressor through a pipeline.
Preferably, the system further comprises an oil separator, wherein the oil separator is arranged on a pipeline between the compressor and the four-way valve.
Preferably, a high-pressure sensor is arranged on a pipeline between the oil separator and the four-way valve, and a low-pressure sensor is arranged between the four-way valve and the gas-liquid separator; the air pipe is provided with an air pipe stop valve, the liquid pipe is provided with a liquid pipe stop valve, and the liquid pipe stop valve is arranged on a pipeline between the outdoor unit and the heat exchange pipe; an outdoor unit electronic expansion valve is arranged on a pipeline between the outdoor unit and the liquid pipe stop valve.
The liquid accumulation preventing multi-split floor heating air conditioner applying the floor heating air conditioner control method comprises the compressor, the air pipe, the liquid pipe, the floor heating, the split-flow control box and a plurality of indoor units
The technical scheme of the invention has the beneficial effects that: 1. when the electromagnetic valve of the indoor unit is closed, the gaseous refrigerant in the air pipe cannot enter the heat exchange pipe and the indoor unit, and the refrigerant in the air pipe can completely enter the ground heating pipe, so that the problem of liquid accumulation in the indoor unit in the process of heating the ground heating is solved, sufficient refrigerant running in the air conditioning system is further ensured, and the heating effect of the ground heating is enhanced; 2. the arrangement of the shunt box also enables the air conditioning system to be more modularized, and facilitates the installation of the air conditioning system and the later detection and maintenance; 3. when the floor heating system heats, the electromagnetic valve of the indoor unit is closed, and the refrigerant cannot pass through the electronic expansion valve of the indoor unit, so that the problem of flowing noise of the refrigerant of the indoor unit which is not started during heating is solved, and the use experience of a user is further improved; 4. an electromagnetic valve is not required to be additionally arranged at each indoor unit, and the indoor units can be controlled only by additionally arranging one electromagnetic valve on the floor heating box, so that the production cost is controlled, and the maintenance process of the air conditioner is simplified; .
Drawings
FIG. 1 is a schematic view of a floor heating air conditioner;
fig. 2 is a schematic structural diagram of the shunt control box.
Reference numerals: 1. a compressor; 10. an outdoor unit; 101. an electronic expansion valve of the outdoor unit; 11. a low pressure sensor; 12. a gas-liquid separator; 13. a connecting pipe; 14. a heat exchange pipe; 2. an oil separator; 3. a high pressure sensor; 4. a four-way valve; 5. an air pipe; 51. an air pipe stop valve; 6. a shunt control box; 61. a first shunt pipe; 611. a first branch pipe; 6111. an inlet of the first shunt tube; 612. a three-way pipe; 613. a second branch pipe; 614. a ground heating liquid inlet pipe; 6141. a second outlet of the first shunt tube; 615. an indoor unit liquid inlet pipe; 6151. a first outlet of the first shunt tube; 62. a second shunt pipe; 621. a third branch pipe; 622. a fourth branch pipe; 63. an electromagnetic valve of the indoor unit; 64. a floor heating electronic expansion valve; 65. a box body; 66. a first positioning seat; 67. a second positioning seat; 7. a ground heating pipe; 71. an inlet of the ground heating pipe; 72. an outlet of the ground heating pipe; 8. an indoor unit; 81. an electronic expansion valve of the indoor unit; 9. a liquid pipe; 91. liquid pipe stop valve.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered 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 one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified 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 connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
As shown in fig. 1 and 2, a method for controlling a floor heating air conditioner includes a compressor 1, an air pipe 5, a liquid pipe 9, a floor heating pipe 7, a plurality of indoor units 8, a refrigerant in the air pipe 5 can enter the liquid pipe 9 through a plurality of heat exchange pipes 14, the plurality of indoor units 8 are respectively installed on the plurality of heat exchange pipes 14, an indoor unit electronic expansion valve 81 is installed on the heat exchange pipe 14 between the indoor unit 8 and the liquid pipe 9, the air pipe 5 and the liquid pipe 9 are connected through the floor heating pipe 7, the floor heating air conditioner further includes a shunt control box 6, the shunt control box 6 includes a first shunt pipe 61 and a second shunt pipe 62, one end of the air pipe 5 is communicated with an inlet 6111 of the first shunt pipe, a first outlet 6151 of the first shunt pipe is connected with inlets of the plurality of heat exchange pipes 14, a second outlet 6141 of the first shunt pipe is connected with an inlet 71 of the floor heating pipe, an indoor unit electromagnetic valve 81 is installed at the first outlet 6151 of the first shunt pipe, the inlet of the second shunt pipe 62 is connected with the outlet 72 of the floor heating pipe, the outlet of the second shunt pipe 62 is connected with the liquid pipe 9, and the floor heating electronic expansion valve 64 is installed on the second shunt pipe 62; the specific steps of the floor heating process are as follows:
step 1), a control system sends a floor heating instruction;
step 2), closing the electromagnetic valve 81 of the indoor unit, opening the plurality of indoor unit electronic expansion valves 81, and opening the floor heating electronic expansion valve 64;
step 3), the compressor 1 is started, the compressor 1 sends high-temperature and high-pressure gaseous refrigerant into the air pipe 5, the electromagnetic valve 81 of the indoor unit is in a closed state, the refrigerant in the air pipe 5 cannot flow into the heat exchange pipe 14 from the first shunt pipe 61, so that the refrigerant in the air pipe 5 can only enter the floor heating through the second outlet 6141 of the first shunt pipe, the refrigerant which completes heat exchange in the floor heating pipe 7 enters the second shunt pipe 62, the refrigerant becomes low-temperature liquid refrigerant after passing through the electronic expansion valve 64 of the floor heating, then enters the liquid inlet pipe 9 from the outlet of the second shunt pipe 62, and the refrigerant entering the liquid pipe 9 returns to the compressor 1 again.
Thus, after the electromagnetic valve 81 of the indoor unit is closed, the gaseous refrigerant in the air pipe 5 cannot enter the heat exchange pipe 14 and the indoor unit 8, and the refrigerant in the air pipe 5 can completely enter the ground heating pipe 7, so that the problem of liquid accumulation of the indoor unit 8 in the process of heating the ground heating is solved, sufficient refrigerant operation in the air conditioning system is further ensured, and the heating effect of the ground heating is enhanced; the arrangement of the shunt control box also enables the air conditioning system to be more modularized, and facilitates the installation of the air conditioning system and the later detection and maintenance; when the floor heating system is used for heating, the electromagnetic valve of the indoor unit is closed, and the refrigerant cannot pass through the indoor unit and the electronic expansion valve of the indoor unit, so that the problem of noise caused by the flowing of the refrigerant of the indoor unit when the heating system is not started is solved.
In this embodiment, in step 3), the control system dynamically adjusts the opening degree of the floor heating electronic expansion valve 64 to control the indoor temperature. Therefore, the flow of the refrigerant entering the ground heating pipe 7 is changed by adjusting the opening degree of the ground heating electronic expansion valve 64, and the indoor temperature can be better controlled.
In this embodiment, the flow distribution control box 6 further includes a box body 65, the first flow distribution pipe 61 and the second flow distribution pipe 62 are both fixedly installed in the box body 65, the first flow distribution pipe 61 includes a first branch pipe 611, a second branch pipe 613, a floor heating liquid inlet pipe 614 and an indoor unit liquid inlet pipe 615, one end of the first branch pipe 611 is connected to the air pipe 5, the other end of the first branch pipe 611, one end of the second branch pipe 613 and one end of the floor heating liquid inlet pipe 614 are communicated through a three-way pipe 612, the other end of the liquid inlet pipe 9 is communicated with an inlet 71 of the floor heating pipe, the other end of the second branch pipe 613 and one end of the indoor unit liquid inlet pipe 615 are connected to the indoor unit electromagnetic valve 81, and the other end of the indoor unit liquid inlet pipe 615 is connected to and communicated with inlets of the plurality of heat exchange pipes 14 through the connection pipe 13. Further, the second branch pipe 62 includes a third branch pipe 621 and a fourth branch pipe 622, one end of the third branch pipe 621 is communicated with one end of the fourth branch pipe 622 through the floor heating electronic expansion valve 64, the other end of the third branch pipe 621 is connected to the outlet of the floor heating pipe 7, and the other end of the fourth branch pipe 622 is connected to the liquid pipe 9. Like this, the structural design of pin-connected panel, the acquisition and the processing of the material when being convenient for make reposition of redundant personnel control box 6 reduce the preparation degree of difficulty and cost. Further, an inlet of the first shunt pipe 61 is a port where the first branch pipe 611 is connected to the air pipe 5, a first outlet 6151 of the first shunt pipe is a port where the indoor unit liquid inlet pipe 615 is connected to the connecting pipe 13, and a second outlet 6141 of the first shunt pipe is a port where the floor heating liquid inlet pipe 614 is connected to the floor heating pipe 7.
In this embodiment, the shunt control box 6 further includes a first positioning seat 66, a second positioning seat 67, and a plurality of semicircular hoops, the box body 65 includes a bottom support, and the first positioning seat 66 and the second positioning seat 67 are both fixedly mounted on the bottom support; one semicircular hoop of the plurality of semicircular hoops is buckled on the outer circular surface of the floor heating liquid inlet pipe 614 and fixes the floor heating liquid inlet pipe 614 on the first positioning seat 66 through a bolt, and the other semicircular hoop is buckled on the outer circular surface of the indoor unit liquid inlet pipe 615 and fixes the indoor unit liquid inlet pipe 614 on the first positioning seat 66 through a bolt; a semicircular hoop is fastened on the outer circumferential surface of the third branch pipe 621 and fixed on the second positioning seat 67 through bolts. Thus, the first shunt pipe 61 and the second shunt pipe 62 are fixedly arranged on the bottom support; the air conditioning system is convenient to detect and maintain, and the difficulty of positioning and laying the pipeline in the actual installation process is reduced.
The floor heating air conditioner capable of preventing liquid accumulation by applying the floor heating air conditioner control method comprises the compressor 1, the air pipe 5, the liquid pipe 9, the floor heating, the flow distribution control box 6 and a plurality of indoor units 8. The outdoor unit 10 is installed on the liquid pipe 9, and the refrigerant after heat exchange by the ground heating pipe 7 flows through the outdoor unit 10 and then flows back to the compressor 1. Thus, the outdoor unit 10 of the air conditioner is prevented from freezing, and the stability of the floor heating air conditioner is improved.
In this embodiment, the system further includes a gas-liquid separator 12, and the gas-liquid separator 12 is installed on a pipeline connecting the outdoor unit 10 and the compressor 1. The compressor is connected with a first port of the four-way valve 4 through a pipeline, one end of the air pipe 5 is connected with a second open port of the four-way valve 4, one end of the liquid pipe 9 is connected with a third port of the four-way valve 4, a fourth port of the four-way valve 4 is connected with the gas-liquid separator 12 through a pipeline, and the gas-liquid separator 12 is connected with the compressor 1 through a pipeline. And further includes an oil separator 2, and the oil separator 2 is installed on a pipe between the compressor 1 and the four-way valve 4. Therefore, the refrigerant can be kept clean, and the stability of the air conditioner is improved.
In the present embodiment, a high-pressure sensor 3 is installed in a pipe between the oil separator 2 and the four-way valve 4, and a low-pressure sensor 11 is installed between the four-way valve 4 and the gas-liquid separator 12; the air pipe 5 is provided with an air pipe stop valve 51, the liquid pipe 9 is provided with a liquid pipe stop valve 91, and the liquid pipe stop valve 91 is arranged on a pipeline between the outdoor unit 10 and the heat exchange pipe 14; an outdoor unit electronic expansion valve 101 is installed on a pipe between the outdoor unit 10 and the liquid pipe stop valve 91. Therefore, the motion state of the air conditioning system is judged according to the data of each sensor, and the floor heating air conditioner can be better monitored so as to analyze and adjust the problems of the floor heating air conditioner in time.
In this embodiment, the refrigerant in the floor heating air conditioner is freon.
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 do not necessarily 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.
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 in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. The utility model provides a control method of ground heating air conditioner, including compressor (1), trachea (5), liquid pipe (9), ground heating coil (7) and a plurality of indoor set (8), refrigerant in trachea (5) can pass through in a plurality of heat exchange tubes (14) entering liquid pipe (9), install respectively on a plurality of heat exchange tubes (14) a plurality of indoor sets (8), install indoor set electronic expansion valve (81) on the pipeline between indoor set (8) and liquid pipe (9), still link to each other through ground heating coil (7) between trachea (5) and liquid pipe (9), its characterized in that: the system is characterized by further comprising a shunt control box (6), the shunt control box (6) comprises a first shunt pipe (61) and a second shunt pipe (62), one end of the air pipe (5) is connected with an inlet (6111) of the first shunt pipe, a first outlet (6151) of the first shunt pipe (61) is connected with inlets of the plurality of heat exchange pipes (14), a second outlet (6141) of the first shunt pipe is connected with an inlet (71) of the floor heating pipe, an indoor unit electromagnetic valve (63) is installed at the first outlet (6151) of the first shunt pipe (61), an inlet of the second shunt pipe (62) is connected with an outlet (72) of the floor heating pipe, an outlet of the second shunt pipe (62) is connected with the liquid pipe (9), and the second shunt pipe (62) is provided with an electronic expansion valve (64); the specific steps of the floor heating process are as follows:
step 1), a control system sends a floor heating instruction;
step 2), closing an indoor unit electromagnetic valve (63) and a plurality of indoor unit electronic expansion valves (81), and opening a floor heating electronic expansion valve (64);
and step 3), the compressor (1) is started, the compressor (1) sends high-temperature and high-pressure gaseous refrigerants into the air pipe (5) through the four-way valve (4), the indoor unit electromagnetic valve (63) is in a closed state, the refrigerants in the air pipe (5) cannot flow into the heat exchange pipe (14) from the first shunt pipe (61), so that the refrigerants in the air pipe (5) can only enter the floor heating pipe (7) through the second outlet (6141) of the first shunt pipe, the refrigerants completing heat exchange in the floor heating pipe (7) enter the second shunt pipe (62), the refrigerants become low-temperature liquid refrigerants after passing through the floor heating electronic expansion valve (64), then enter the liquid inlet pipe (9) from the outlet of the second shunt pipe (62), and the refrigerants entering the liquid pipe (9) return to the compressor (1) again.
2. A control method of a floor heating air conditioner according to claim 1, characterized in that: in the step 3), the control system controls the indoor temperature by dynamically adjusting the opening degree of the floor heating electronic expansion valve (64).
3. A control method of a floor heating air conditioner according to claim 1, characterized in that: the flow distribution control box (6) further comprises a box body (65), the first flow distribution pipe (61) and the second flow distribution pipe (62) are fixedly installed in the box body (65), the first flow distribution pipe (61) comprises a first branch pipe (611), a second branch pipe (613), a floor heating liquid inlet pipe (614) and an indoor unit liquid inlet pipe (615), one end of the first branch pipe (611) is connected with the air pipe (5), the other end of the first branch pipe (611), one end of the second branch pipe (613) and one end of the floor heating liquid inlet pipe (614) are communicated through a three-way pipe (612), the other end of the liquid inlet pipe (9) is communicated with an inlet (71) of the floor heating pipe, the other end of the second branch pipe (613) is communicated with one end of the indoor unit liquid inlet pipe (615) through an indoor unit electromagnetic valve (63), and the other end of the indoor unit liquid inlet pipe (615) is communicated with inlets of the plurality of heat exchange pipes (14) through a connecting pipe (13).
4. A control method of a floor heating air conditioner according to claim 3, characterized in that: the second branch pipe (62) comprises a third branch pipe (621) and a fourth branch pipe (622), one end of the third branch pipe (621) is communicated with one end of the fourth branch pipe (622) through a floor heating electronic expansion valve (64), the other end of the third branch pipe (621) is connected with an outlet (72) of a floor heating pipe, and the other end of the fourth branch pipe (622) is connected with a liquid pipe (9).
5. The control method of the multi-split floor heating air conditioner as claimed in claim 1, wherein: the outdoor unit (10) is arranged on the liquid pipe (9), and the refrigerant which completes heat exchange in the ground heating pipe (7) flows back to the compressor (1) after flowing through the outdoor unit (10).
6. A control method of a floor heating air conditioner according to claim 5, characterized in that: the outdoor unit air conditioner further comprises a gas-liquid separator (12), wherein the gas-liquid separator (12) is arranged on a pipeline connecting the outdoor unit (10) and the compressor (1).
7. A control method of a floor heating air conditioner according to claim 6, characterized in that: the compressor is connected with a first port of the four-way valve (4) through a pipeline, one end of the air pipe (5) is connected with a second opening port of the four-way valve (4), one end of the liquid pipe (9) is connected with a third port of the four-way valve (4), a fourth port of the four-way valve (4) is connected with the gas-liquid separator (12) through a pipeline, and the gas-liquid separator (12) is connected with the compressor (1) through a pipeline.
8. A control method of a floor heating air conditioner according to claim 7, characterized in that: the oil separator (2) is arranged on a pipeline between the compressor (1) and the four-way valve (4).
9. A control method of a floor heating air conditioner according to claim 8, characterized in that: a high-pressure sensor (3) is arranged on a pipeline between the oil separator (2) and the four-way valve (4), and a low-pressure sensor (11) is arranged between the four-way valve (4) and the gas-liquid separator (12); the air pipe (5) is provided with an air pipe stop valve (51), the liquid pipe (9) is provided with a liquid pipe stop valve (91), and the liquid pipe stop valve (91) is arranged on a pipeline between the outdoor unit (10) and the heat exchange pipe (14); an outdoor unit electronic expansion valve (101) is installed on a pipeline between the outdoor unit (10) and the liquid pipe stop valve (91).
10. The floor heating air conditioner with the liquid accumulation prevention function, applying the control method of the floor heating air conditioner as claimed in any one of claims 1 to 9, is characterized in that: the air-conditioning system comprises the compressor (1), an air pipe (5), a liquid pipe (9), a floor heating device, a flow dividing control box (6) and a plurality of indoor units (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210445535.4A CN114738852A (en) | 2022-04-26 | 2022-04-26 | Liquid accumulation preventing multi-connected floor heating air conditioner and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210445535.4A CN114738852A (en) | 2022-04-26 | 2022-04-26 | Liquid accumulation preventing multi-connected floor heating air conditioner and control method thereof |
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