CN111692683A - Air source heat pump system and defrosting and disinfecting method thereof - Google Patents
Air source heat pump system and defrosting and disinfecting method thereof Download PDFInfo
- Publication number
- CN111692683A CN111692683A CN202010542776.1A CN202010542776A CN111692683A CN 111692683 A CN111692683 A CN 111692683A CN 202010542776 A CN202010542776 A CN 202010542776A CN 111692683 A CN111692683 A CN 111692683A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- refrigerant
- outdoor heat
- indoor
- throttling device
- 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.)
- Pending
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000249 desinfective effect Effects 0.000 title abstract description 3
- 239000003507 refrigerant Substances 0.000 claims abstract description 110
- 238000010438 heat treatment Methods 0.000 claims abstract description 106
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 21
- 230000001954 sterilising effect Effects 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
-
- 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
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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 provides an air source heat pump and a defrosting and disinfecting method thereof. The rapid heating membrane tube is arranged on the refrigerant bypass loop, so that the evaporator of the air source heat pump unit is accurately defrosted; the fast heating film tube bank is arranged on the outer side of the fins of the indoor side heat exchanger, so that high-temperature disinfection and heat compensation of indoor air are realized. The defrosting technology provided by the invention obviously shortens the defrosting period, can continuously heat in the defrosting process, has small fluctuation range of indoor temperature, and improves indoor comfort and air quality.
Description
Technical Field
The invention relates to the field of air source heat pumps, in particular to a heat pump system with a defrosting function and a defrosting method.
Background
In the air source heat pump, an outdoor evaporator is prone to frosting in a heating cycle in winter, and once frosting occurs, the heating performance of the heat pump is greatly reduced, so that the outdoor evaporator needs to be defrosted in time. In the prior art, defrosting modes generally include three modes of directly heating frost by additionally arranging an electric heating wire on an evaporator fin, reversely circulating hot gas defrosting and hot gas bypass defrosting. Although the mode of directly heating the outdoor evaporator by using the heating wire is simpler, the energy consumption is higher, which results in the efficiency reduction of the heat pump. The reverse circulation hot gas defrosting is to melt the frost on the evaporator through the reverse circulation of the refrigerating system, the system stops continuously supplying heat to the indoor when the reverse circulation defrosting is carried out, and the indoor temperature drops suddenly, so that the using satisfaction of users is low. The hot gas bypass defrosting method is a method of bypassing a part of high-temperature and high-pressure refrigerant discharged from a compressor to an outdoor evaporator to defrost, and although the heat supply to the indoor is not stopped, the defrosting time is long, so that the indoor temperature is greatly reduced. Therefore, the existing defrosting methods have the defects of long defrosting time, energy efficiency reduction of a heat pump unit, low user satisfaction, long time for the indoor unit to recover normal heat supply after defrosting and the like. Meanwhile, in order to provide healthy air quality, if the air source heat pump supplies high-temperature air for a certain time (the air supply temperature is more than 60 ℃), the bacterial and viral treatment of indoor air can be realized.
The existence of the problems leads to the urgent need of a heat pump defrosting and sterilizing technology which can efficiently, rapidly and accurately defrost, sterilize and disinfect without influencing the indoor heat supply effect.
Disclosure of Invention
In order to solve one or more of the above technical problems, the present invention provides an air source heat pump system, which includes a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device, an indoor heat exchanger, wherein the compressor, the four-way valve, the outdoor heat exchanger, the first throttling device, the indoor heat exchanger are sequentially connected to form a refrigerant circulation loop, the system further includes a refrigerant bypass loop, one end of the refrigerant bypass loop is connected between the four-way valve and the indoor heat exchanger, the other end of the refrigerant bypass loop is connected between the first throttling device and the outdoor heat exchanger, and a first electromagnetic valve is arranged on the refrigerant circulation loop;
the refrigerant circulating loop is also provided with a first instant heating film tube which is used for heating the refrigerant flowing through;
a second-speed hot film pipe is arranged on a pipeline between the first throttling device and the outdoor heat exchanger and used for heating a flowing refrigerant;
when the outdoor heat exchanger needs defrosting, part of high-temperature and high-pressure refrigerant discharged by the compressor flows into the outdoor heat exchanger through the refrigerant circulation loop and is defrosted.
The invention also provides an air source heat pump system, which comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger, wherein the compressor, the four-way valve, the outdoor heat exchanger, the first throttling device and the indoor heat exchanger are sequentially connected to form a refrigerant circulating loop;
in addition, an auxiliary heating branch is also arranged, one end of the auxiliary heating branch is connected between the first throttling device and the indoor heat exchanger, the other end of the auxiliary heating branch is connected between the outdoor heat exchanger and the four-way valve, and a second electromagnetic valve and a second throttling device are arranged on the auxiliary heating branch;
the auxiliary heating branch is also provided with a third fast heating film tube which is used for heating the flowing refrigerant;
adjusting the refrigerant flow rates through the indoor heat exchanger and the outdoor heat exchanger, respectively, by adjusting the second throttling device and the third throttling device.
Furthermore, a fourth fast heating film tube is arranged on the indoor heat exchanger.
Further, the fourth fast heating film tube forms a tube bank for supplementing heat to the indoor air when the system is defrosted, so as to reduce the fluctuation of the room temperature and/or realize high-temperature disinfection and sterilization of the indoor air.
Furthermore, the quick heating film tube comprises an innermost copper tube layer, a substrate layer wrapping the copper tube layer and a nano electrothermal resistance film layer wrapping the substrate layer.
The invention also provides a defrosting method of the air source heat pump system, the air source heat pump system comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger, the compressor, the four-way valve, the outdoor heat exchanger, the first throttling device and the indoor heat exchanger are sequentially connected to form a refrigerant circulation loop, and the method comprises the following steps:
s1: providing a refrigerant bypass loop, wherein one end of the refrigerant bypass loop is connected between the four-way valve and the indoor heat exchanger, the other end of the refrigerant bypass loop is connected between the first throttling device and the outdoor heat exchanger, and a first electromagnetic valve is arranged on the refrigerant circulation loop;
s2: a first quick heating film pipe is arranged on the refrigerant bypass loop, and a second quick heating film pipe is arranged between the first throttling device and the outdoor heat exchanger;
s3: when the outdoor heat exchanger needs defrosting, opening an electromagnetic valve on the refrigerant bypass circuit, and enabling part of high-temperature and high-pressure refrigerant discharged from the compressor to pass through the refrigerant bypass circuit;
s4: and starting the first speed hot film pipe and/or the second speed hot film pipe and heating the passing refrigerant.
Further, the method also comprises the following steps:
s5: and starting the fourth quick heating film tube to supplement heat to the indoor air or to sterilize the indoor air at high temperature.
The invention also provides a defrosting method of the air source heat pump system, the air source heat pump system comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger, the compressor, the four-way valve, the outdoor heat exchanger, the first throttling device and the indoor heat exchanger are sequentially connected to form a refrigerant circulation loop, and the method comprises the following steps:
s1: providing a refrigerant bypass circuit, wherein one end of the refrigerant bypass circuit is connected between the four-way valve and the indoor heat exchanger, the other end of the refrigerant bypass circuit is connected between the first throttling device and the outdoor heat exchanger, and a first electromagnetic valve and a third throttling device are arranged on the refrigerant circulation circuit;
s2: providing an auxiliary heating branch, wherein one end of the auxiliary heating branch is connected between the first throttling device and the indoor heat exchanger, the other end of the auxiliary heating branch is connected between the outdoor heat exchanger and the four-way valve, a second electromagnetic valve, a second throttling device and a third quick heating film tube are arranged on the auxiliary heating branch, and the third quick heating film tube is used for heating the refrigerant flowing through;
s3: when the outdoor heat exchanger needs defrosting, closing the first throttling device, and opening the first electromagnetic valve and the second electromagnetic valve; and starting the third speed hot film tube, enabling part of high-temperature and high-pressure refrigerant discharged by the compressor to flow into the outdoor heat exchanger through the refrigerant bypass loop for defrosting, and enabling the rest of refrigerant to flow back to the compressor through the auxiliary heating branch after passing through the indoor heat exchanger.
Further, the method comprises the following steps:
s4: and starting the fourth quick heating film tube to perform heat compensation or high-temperature disinfection and sterilization on the indoor air.
The invention can solve the problems of complex defrosting structure and complete machine energy efficiency reduction of the existing air source heat pump unit, and provides a simple, quick and accurate defrosting technology and a technology for achieving indoor air disinfection and sterilization effects, so that the indoor temperature fluctuation is small, and the comfort requirement is met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are needed in the embodiments or the prior art descriptions will be briefly described below.
FIG. 1: the invention provides a system schematic diagram of a first embodiment of an air source heat pump system;
FIG. 2: the invention provides a system schematic diagram of a second embodiment of an air source heat pump system;
FIG. 3: cross section view of fast heating film tube
FIG. 4: fast hot membrane tube bank structure chart
1-a first throttling device; 2-a four-way valve; 3-a compressor; 4-a first solenoid valve; 5-indoor heat exchanger; 5-2-fourth speed heating film tube; 6-outdoor heat exchanger; 7-a first instant heating film tube; 8-a second speed hot film tube; 9-a second solenoid valve; 10-a second throttling means; 11-third throttling means; 12-third speed heating film tube; 101-copper tube layer; 102-a substrate layer; 103-nanometer electrothermal resistance film layer; 201-silver electrode.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which are provided solely for a better understanding of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the patented embodiments of the invention without any inventive step, are within the scope of protection of the invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally 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 in specific cases to those skilled in the art.
Example one
As shown in fig. 1. The embodiment discloses an air source heat pump system, which comprises a compressor 3, a four-way valve 2, an outdoor heat exchanger 6, a first throttling device 1 and an indoor heat exchanger 5, wherein the compressor 3, the four-way valve 2, the outdoor heat exchanger 6, the first throttling device 1 and the indoor heat exchanger 5 are sequentially connected to form a refrigerant circulation loop, the air source heat pump system further comprises a refrigerant bypass loop, one end of the refrigerant bypass loop is connected between the four-way valve 2 and the indoor heat exchanger 5, the other end of the refrigerant bypass loop is connected between the first throttling device 1 and the outdoor heat exchanger 6, and a first electromagnetic valve 4 is arranged on the refrigerant circulation loop.
Specifically, the refrigerant circulation loop is further provided with a first instant heating film tube 7, and the first instant heating film tube 7 is used for heating the flowing refrigerant. A second-speed hot film pipe 8 is arranged on a pipeline between the first throttling device 1 and the outdoor heat exchanger 6, and the second-speed hot film pipe 8 is used for heating the refrigerant flowing through.
When the outdoor heat exchanger 6 needs defrosting, the fan of the outdoor heat exchanger 6 stops, the fan of the indoor heat exchanger 5 runs normally, the first electromagnetic valve 4 on the refrigerant bypass circuit is opened, and a part of high-temperature and high-pressure refrigerant exhaust gas of the compressor 3 is heated by the first fast heating film tube 7 and the second fast heating film tube 8 in sequence through the refrigerant bypass circuit and enters the outdoor heat exchanger 6 for defrosting. The quick heating film tube can perform surface heating on the pipeline, the temperature rise speed per second reaches 100-300 ℃, the pipeline is accurately and quickly electrically heated, and frost is formed on the melting pipeline.
As shown in fig. 3, the rapid heating film tube includes an innermost copper tube layer 101, a substrate layer 102 coating the copper tube layer, and a nano electrothermal resistance film layer 103 coating the substrate layer. Wherein the copper pipe layer 101 is by the zone of heating, and substrate layer 102 is insulating material, and nanometer electric heat hinders rete 103 for the fast hot membrane closely attached with the pipeline, can plate in geometric curves such as pipeline surface, and thickness is no longer than 5 microns, and the programming rate is fast, and thermal inertia is little, can accurate instantaneous high-efficient heating copper pipe layer. As shown in FIG. 4, the two ends of the instant heating film tube are provided with conductive electrodes, the electrodes are silver electrodes 201, and the silver electrodes at the two ends are respectively externally connected with the positive electrode and the negative electrode of a power supply.
As shown in fig. 1, a fourth fast heating film tube 5-2 is further disposed on the indoor heat exchanger 5, and forms a tube bank as shown in fig. 4, and is used for supplementing heat to the indoor air when the system is defrosted so as to reduce room temperature fluctuation; meanwhile, the power of the fourth fast heating film tube (5-2) is controlled according to the specified indoor ventilation volume, the indoor air self-circulates for the specified time and the specified air supply temperature, and the high-temperature disinfection and sterilization of the indoor air can be realized.
The air source heat pump disclosed by the implementation relies on the rapid electric heating and accurate temperature control technology, temperature value and pressure value monitoring is arranged at key nodes of all parts, digital-to-analog conversion is realized, and intelligent defrosting control of a heat pump unit is carried out.
Example two
As shown in fig. 2. The embodiment discloses an air source heat pump system, which comprises a compressor 3, a four-way valve 2, an outdoor heat exchanger 6, a first throttling device 1 and an indoor heat exchanger 5, wherein the compressor 3, the four-way valve 2, the outdoor heat exchanger 6, the first throttling device 1 and the indoor heat exchanger 5 are sequentially connected to form a refrigerant circulation loop, the air source heat pump system further comprises a refrigerant bypass loop, one end of the refrigerant bypass loop is connected between the four-way valve 2 and the indoor heat exchanger 5, the other end of the refrigerant bypass loop is connected between the first throttling device 1 and the outdoor heat exchanger 6, and a first electromagnetic valve 4 and a third throttling device 11 are arranged on the refrigerant circulation loop.
In addition, an auxiliary heating branch is further arranged, one end of the auxiliary heating branch is connected between the first throttling device 1 and the indoor heat exchanger 5, the other end of the auxiliary heating branch is connected between the outdoor heat exchanger 6 and the four-way valve 2, and a second electromagnetic valve 9 and a second throttling device 10 are arranged on the auxiliary heating branch. And a third fast heating film tube 12 is further arranged on the auxiliary heating branch, and the third fast heating film tube 12 is used for heating the flowing refrigerant.
When the outdoor heat exchanger 6 needs defrosting, the fan of the outdoor heat exchanger 6 stops rotating, the fan of the indoor heat exchanger 5 runs at a low speed, the first throttling device 1 is closed, the first electromagnetic valve 4 and the second electromagnetic valve 9 are opened, the third speed hot film tube 12 is started, part of high-temperature and high-pressure refrigerant discharged by the compressor flows into the outdoor heat exchanger 6 through the refrigerant bypass loop for defrosting, and the rest of refrigerant flows back to the compressor through the auxiliary heating branch after passing through the indoor heat exchanger 5.
The second throttling means 10 and the third throttling means 11 are adjusted to adjust the refrigerant flow rates respectively passing through the indoor heat exchanger 5 and the outdoor heat exchanger 6, thereby controlling defrosting and heating respectively.
And a fourth fast heating film tube 5-2 is also arranged on the indoor heat exchanger 5.
The fourth fast heat film tube 5-2 forms a tube row for supplementing heat to the indoor air when the system defrosts so as to reduce the fluctuation of the room temperature, and simultaneously, the power of the fourth fast heat film tube (5-2) is controlled according to the specified indoor ventilation volume, the indoor air self-circulates for the specified time and the specified air supply temperature, and the high-temperature disinfection and sterilization of the indoor air can be realized.
Third embodiment
With reference to fig. 1, the present embodiment discloses a defrosting method for an air source heat pump system, where the air source heat pump system includes a compressor 3, a four-way valve 2, an outdoor heat exchanger 6, a first throttling device 1, and an indoor heat exchanger 5, and the compressor 3, the four-way valve 2, the outdoor heat exchanger 6, the first throttling device 1, and the indoor heat exchanger 5 are sequentially connected to form a refrigerant circulation loop, and the method includes the following steps:
s1: providing a refrigerant bypass circuit, wherein one end of the refrigerant bypass circuit is connected between the four-way valve 2 and the indoor heat exchanger 5, the other end of the refrigerant bypass circuit is connected between the first throttling device 1 and the outdoor heat exchanger 6, and a first electromagnetic valve 4 is arranged on the refrigerant circulation circuit;
s2: a first fast heating film pipe 7 is arranged on the refrigerant bypass loop, and a second fast heating film pipe 8 is arranged between the first throttling device and the outdoor heat exchanger 6;
s3: when the outdoor heat exchanger 6 needs defrosting, opening the electromagnetic valve 4 on the refrigerant bypass circuit, and enabling part of the high-temperature and high-pressure refrigerant discharged from the compressor to pass through the refrigerant bypass circuit;
s4: and starting the first speed hot film pipe 7 and/or the second speed hot film pipe 8 and heating the passing refrigerant.
S5: and starting the fourth quick heating film tube (5-2) to supplement heat to the indoor air or automatically circulate the indoor air for a specified time and a specified air supply temperature to meet the high-temperature disinfection and sterilization of the indoor air.
Fourth embodiment
With reference to fig. 2, the present embodiment discloses a defrosting method for an air source heat pump system, where the air source heat pump system includes a compressor 3, a four-way valve 2, an outdoor heat exchanger 6, a first throttling device 1, and an indoor heat exchanger 5, and the compressor 3, the four-way valve 2, the outdoor heat exchanger 6, the first throttling device 1, and the indoor heat exchanger 5 are sequentially connected to form a refrigerant circulation loop, and the method includes the following steps:
s1: providing a refrigerant bypass circuit, wherein one end of the refrigerant bypass circuit is connected between the four-way valve 2 and the indoor heat exchanger 5, the other end of the refrigerant bypass circuit is connected between the first throttling device 1 and the outdoor heat exchanger 6, and a first electromagnetic valve 4 and a third throttling device 11 are arranged on the refrigerant circulation circuit;
s2: providing an auxiliary heating branch, wherein one end of the auxiliary heating branch is connected between the first throttling device 1 and the indoor heat exchanger 5, the other end of the auxiliary heating branch is connected between the outdoor heat exchanger 6 and the four-way valve 2, a second electromagnetic valve 9, a second throttling device 10 and a third instant heating film tube 12 are arranged on the auxiliary heating branch, and the third instant heating film tube 12 is used for heating the refrigerant flowing through;
s3: when the outdoor heat exchanger 6 needs defrosting, closing the first throttling device 1, and opening the first electromagnetic valve 4 and the second electromagnetic valve 9; and starting the third speed hot film tube 12, enabling part of high-temperature and high-pressure refrigerant discharged by the compressor to flow into the outdoor heat exchanger 6 through the refrigerant bypass loop for defrosting, and enabling the rest of refrigerant to flow back to the compressor through the auxiliary heating branch after passing through the indoor heat exchanger 5.
S4: and starting the fourth quick heating film tube (5-2) to supplement heat to the indoor air or automatically circulate the indoor air for a specified time and a specified air supply temperature to meet the high-temperature disinfection and sterilization of the indoor air.
The invention utilizes the quick-heating film tube to assist in heating hot gas to bypass defrosting, the defrosting period is obviously shortened, the defrosting process can be continuously heated, the fluctuation range of indoor temperature is smaller, meanwhile, the quick-heating film tube bank can meet the requirements of indoor air disinfection and sterilization, and the indoor comfort and the air quality are improved.
Claims (9)
1. The utility model provides an air source heat pump system, its includes compressor (3), cross valve (2), outdoor heat exchanger (6), first throttling arrangement (1), indoor heat exchanger (5), compressor (3), cross valve (2), outdoor heat exchanger (6), first throttling arrangement (1), indoor heat exchanger (5) link to each other in proper order and form refrigerant circulation circuit, its characterized in that:
the outdoor heat exchanger is characterized by further comprising a refrigerant bypass loop, wherein one end of the refrigerant bypass loop is connected between the four-way valve (2) and the indoor heat exchanger (5), the other end of the refrigerant bypass loop is connected between the first throttling device (1) and the outdoor heat exchanger (6), and a first electromagnetic valve (4) is arranged on the refrigerant circulation loop;
the refrigerant circulating loop is also provided with a first instant heating film tube (7), and the first instant heating film tube (7) is used for heating the flowing refrigerant;
a second-speed hot film pipe (8) is arranged on a pipeline between the first throttling device (1) and the outdoor heat exchanger (6), and the second-speed hot film pipe (8) is used for heating the flowing refrigerant;
when the outdoor heat exchanger (6) needs defrosting, part of high-temperature and high-pressure refrigerant discharged by the compressor (3) flows into the outdoor heat exchanger (6) through the refrigerant circulation loop and is defrosted.
2. The utility model provides an air source heat pump system, its includes compressor (3), cross valve (2), outdoor heat exchanger (6), first throttling arrangement (1), indoor heat exchanger (5), compressor (3), cross valve (2), outdoor heat exchanger (6), first throttling arrangement (1), indoor heat exchanger (5) link to each other in proper order and form refrigerant circulation circuit, its characterized in that:
the outdoor heat exchanger is characterized by further comprising a refrigerant bypass loop, wherein one end of the refrigerant bypass loop is connected between the four-way valve (2) and the indoor heat exchanger (5), the other end of the refrigerant bypass loop is connected between the first throttling device (1) and the outdoor heat exchanger (6), and a first electromagnetic valve (4) and a third throttling device (11) are arranged on the refrigerant circulation loop;
in addition, an auxiliary heating branch is also arranged, one end of the auxiliary heating branch is connected between the first throttling device (1) and the indoor heat exchanger (5), the other end of the auxiliary heating branch is connected between the outdoor heat exchanger (6) and the four-way valve (2), and a second electromagnetic valve (9) and a second throttling device (10) are arranged on the auxiliary heating branch;
the auxiliary heating branch is also provided with a third fast heating film tube (12), and the third fast heating film tube (12) is used for heating the flowing refrigerant;
-regulating the refrigerant flow through the indoor heat exchanger (5) and the outdoor heat exchanger (6), respectively, by regulating the second throttling means (10) and the third throttling means (11).
3. The system according to claim 1 or 2, characterized in that: and a fourth fast heating film tube (5-2) is also arranged on the indoor heat exchanger (5).
4. The system of claim 3, wherein: the fourth fast-heating film tube (5-2) forms a tube row and is used for supplementing heat to indoor air when the system is defrosted so as to reduce room temperature fluctuation and/or realize high-temperature disinfection and sterilization of the indoor air.
5. The system of claim 1 or 2 or 3 or 4, wherein: the quick heating film tube comprises an innermost copper tube layer (101), a substrate layer (102) coating the copper tube layer and a nano electrothermal resistance film layer (103) coating the substrate layer.
6. The defrosting method of the air source heat pump system comprises a compressor (3), a four-way valve (2), an outdoor heat exchanger (6), a first throttling device (1) and an indoor heat exchanger (5), wherein the compressor (3), the four-way valve (2), the outdoor heat exchanger (6), the first throttling device (1) and the indoor heat exchanger (5) are sequentially connected to form a refrigerant circulation loop, and the defrosting method is characterized in that: the method comprises the following steps:
s1: providing a refrigerant bypass loop, wherein one end of the refrigerant bypass loop is connected between the four-way valve (2) and the indoor heat exchanger (5), the other end of the refrigerant bypass loop is connected between the first throttling device (1) and the outdoor heat exchanger (6), and a first electromagnetic valve (4) is arranged on the refrigerant circulation loop;
s2: a first fast heating film pipe (7) is arranged on the refrigerant bypass circuit, and a second fast heating film pipe (8) is arranged between the first throttling device and the outdoor heat exchanger (6);
s3: when the outdoor heat exchanger (6) needs defrosting, opening an electromagnetic valve (4) on the refrigerant bypass circuit, and enabling part of high-temperature and high-pressure refrigerant discharged from the compressor to pass through the refrigerant bypass circuit;
s4: and starting the first speed hot film pipe (7) and/or the second speed hot film pipe (8) and heating the passing refrigerant.
7. The method of claim 6, wherein: also comprises the following steps:
s5: and starting the fourth quick heating film tube (5-2) to supplement heat to the indoor air or sterilize the indoor air at high temperature.
8. The defrosting method of the air source heat pump system comprises a compressor (3), a four-way valve (2), an outdoor heat exchanger (6), a first throttling device (1) and an indoor heat exchanger (5), wherein the compressor (3), the four-way valve (2), the outdoor heat exchanger (6), the first throttling device (1) and the indoor heat exchanger (5) are sequentially connected to form a refrigerant circulation loop, and the defrosting method is characterized in that: the method comprises the following steps:
s1: providing a refrigerant bypass circuit, wherein one end of the refrigerant bypass circuit is connected between the four-way valve (2) and the indoor heat exchanger (5), the other end of the refrigerant bypass circuit is connected between the first throttling device (1) and the outdoor heat exchanger (6), and a first electromagnetic valve (4) and a third throttling device 11 are arranged on the refrigerant circulation circuit;
s2: providing an auxiliary heating branch, wherein one end of the auxiliary heating branch is connected between the first throttling device (1) and the indoor heat exchanger (5), the other end of the auxiliary heating branch is connected between the outdoor heat exchanger (6) and the four-way valve (2), a second electromagnetic valve (9), a second throttling device (10) and a third fast heating film tube (12) are arranged on the auxiliary heating branch, and the third fast heating film tube (12) is used for heating the flowing refrigerant;
s3: when the outdoor heat exchanger (6) needs defrosting, closing the first throttling device (1) and opening the first electromagnetic valve (4) and the second electromagnetic valve (9); and starting the third speed hot film tube (12), enabling part of high-temperature and high-pressure refrigerant discharged by the compressor to flow into the outdoor heat exchanger (6) through the refrigerant bypass loop for defrosting, and enabling the rest of refrigerant to flow back to the compressor through the auxiliary heating branch after passing through the indoor heat exchanger (5).
9. The method of claim 8, wherein: also comprises the following steps:
s4: and starting the fourth quick heating film tube (5-2) to perform heat compensation or high-temperature disinfection and sterilization on the indoor air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010542776.1A CN111692683A (en) | 2020-06-15 | 2020-06-15 | Air source heat pump system and defrosting and disinfecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010542776.1A CN111692683A (en) | 2020-06-15 | 2020-06-15 | Air source heat pump system and defrosting and disinfecting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111692683A true CN111692683A (en) | 2020-09-22 |
Family
ID=72481068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010542776.1A Pending CN111692683A (en) | 2020-06-15 | 2020-06-15 | Air source heat pump system and defrosting and disinfecting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111692683A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR870002423A (en) * | 1985-08-22 | 1987-03-31 | 시끼 모리야 | Air conditioner |
| CN101382367A (en) * | 2005-08-05 | 2009-03-11 | 松下电器产业株式会社 | Air conditioner |
| CN102589071A (en) * | 2011-08-25 | 2012-07-18 | 奉政一 | Super-heat-conduction-transmission cooling and heating device |
| CN109099522A (en) * | 2018-08-24 | 2018-12-28 | 珠海格力电器股份有限公司 | Defroster, air-conditioner outdoor unit and air-conditioning |
| CN109140707A (en) * | 2018-07-19 | 2019-01-04 | 珠海格力电器股份有限公司 | A kind of air conditioner self cleaning method, system and air conditioner |
| CN117067852A (en) * | 2020-08-03 | 2023-11-17 | 比亚迪股份有限公司 | Electric vehicle thermal management system, thermal management method and vehicle |
-
2020
- 2020-06-15 CN CN202010542776.1A patent/CN111692683A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR870002423A (en) * | 1985-08-22 | 1987-03-31 | 시끼 모리야 | Air conditioner |
| CN101382367A (en) * | 2005-08-05 | 2009-03-11 | 松下电器产业株式会社 | Air conditioner |
| CN102589071A (en) * | 2011-08-25 | 2012-07-18 | 奉政一 | Super-heat-conduction-transmission cooling and heating device |
| CN109140707A (en) * | 2018-07-19 | 2019-01-04 | 珠海格力电器股份有限公司 | A kind of air conditioner self cleaning method, system and air conditioner |
| CN109099522A (en) * | 2018-08-24 | 2018-12-28 | 珠海格力电器股份有限公司 | Defroster, air-conditioner outdoor unit and air-conditioning |
| CN117067852A (en) * | 2020-08-03 | 2023-11-17 | 比亚迪股份有限公司 | Electric vehicle thermal management system, thermal management method and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975422B (en) | Warm/cool air-conditioner and defrosting method thereof | |
| CN105135620B (en) | Air-conditioner outdoor unit Defrost method | |
| WO2021169526A1 (en) | Heat exchange device, air conditioner and control method therefor | |
| CN109386982A (en) | Air conditioner and its control method | |
| CN104729029A (en) | Air conditioning system and control method thereof | |
| CN103388944A (en) | Air-conditioning system and control method thereof | |
| CN213454443U (en) | Refrigeration system | |
| CN113137677B (en) | Heat recovery air conditioning system and control method thereof | |
| CN106524399A (en) | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner | |
| CN106885391A (en) | A kind of air-conditioner and its control method | |
| CN106765945B (en) | A kind of air conditioner defrosting control method, device and air conditioner | |
| TWI588424B (en) | Heat pump air condition system and control method thereof | |
| CN212777710U (en) | Air source heat pump system | |
| CN111692683A (en) | Air source heat pump system and defrosting and disinfecting method thereof | |
| CN210179818U (en) | Air conditioner integrating air conditioner and cold and hot water machine | |
| CN204787419U (en) | Air conditioner | |
| CN208238034U (en) | Air-conditioning system | |
| CN111023414A (en) | Air conditioning system and dehumidification control method | |
| CN113375290B (en) | Air conditioner and control method thereof | |
| CN206113445U (en) | Air conditioning system | |
| CN110736215B (en) | Control method and control device for defrosting of air conditioner and air conditioner | |
| CN112113380A (en) | Refrigeration system and control method thereof | |
| CN209693351U (en) | Air conditioner for base station | |
| CN107238236B (en) | Air-supplying enthalpy-increasing air conditioning system and control method thereof | |
| WO2019227911A1 (en) | Outdoor unit and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |