CN107120831A - A kind of continuous heating air friction drag - Google Patents
A kind of continuous heating air friction drag Download PDFInfo
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- CN107120831A CN107120831A CN201710390318.9A CN201710390318A CN107120831A CN 107120831 A CN107120831 A CN 107120831A CN 201710390318 A CN201710390318 A CN 201710390318A CN 107120831 A CN107120831 A CN 107120831A
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- compressor
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- evaporator
- way reversing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- 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
- F25B47/022—Defrosting cycles hot gas defrosting
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- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/023—Set point defrosting
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention discloses a kind of continuous heating air friction drag, including water-cooled condenser (7) and two compressors (1,3), two air-cooled evaporators (12,14), two throttle valve components (11,10), also include three check valves (4,5,9), two four-way reversing valves (8,13), one compressor, an evaporator, a throttle valve component chain control are into a vapor-compression group, two vapor-compression groups are realized by organic switching of four-way reversing valve and alternately defrosted, and make heating operations continuous and stable, reliable, defrosting energy consumption low.
Description
Technical field
The invention belongs to air source heat pump technical field, particularly a kind of simple in construction, simple and reliable, energy consumption of control is low
The air friction drag of continuous heating.
Background technology
In China In Middle And Lower Reaches of Changjiang River, when air source heat pump is run under outdoor cryogenic conditions, work as outdoor heat exchanger
When surface temperature is less than surrounding air dew-point temperature and is less than 0 DEG C, heat exchanger surface frosting can be caused.Evaporator surface frosting meeting
Cause the heat transfer resistance of outdoor heat exchanger and increase, air communication channel area reduces, so as to cause outdoor heat exchanger ventilation to drop
It is low, ultimately result in the reduction of source pump heating capacity, heating performance and decline, or even low pressure alarming occur and delivery temperature is excessive waits former
Barrier.Therefore, source pump outdoor heat exchanger is periodically defrosted particularly significant.
Most widely used Defrost mode is four-way reversing valve commutation defrosting mode, i.e., pressed when heat pump air conditioner defrosts
Kind of refrigeration cycle mode is run, and compressor air-discharging enters outdoor heat exchanger, is absorbed frost layer heat and is condensed, then enters through throttling arrangement
Indoor heat exchanger, returns to compressor after indoor absorption partial heat, completes defrosting circulation.The problem of this Defrost mode is maximum
It exactly can not persistently heat and cause indoor temperature to decline, influence indoor comfortableness, and refrigerant reverse flow when defrosting,
The problem of frequent high-low pressure changes compressor air suction band liquid when can cause equipment impact and operating mode switching in running, increases simultaneously
The power consumption of pump assembly is heated, the heating performance and operational reliability of unit is reduced.
In recent years, the reverse defrosting mode of bypass throttle device, the mode such as the reverse defrosting mode with refrigerant compensator
Improvement to traditional defrosting mode achieves preferable effect, but comfortable from indoor heat absorption influence when being still unavoidable from defrosting
The problem of property.Several new defrosting modes, the problem of comfortableness can be solved very well, such as accumulation of heat defrosting, hot gas bypass defrosting
And return-air heating defrosting this several defrosting mode, it is avoided that during Defrost operation and takes heat from interior and ask indoor temperature reduction
The appearance of topic.But there is also some problems, such as phase-change material used in thermal storage defrosting needs and the heat needed for defrosting
Preferably matched, and hot gas bypass defrosting and return-air heating defrosting then need the gas-liquid for setting capacity larger in systems
Separator, adds the cost of defrosting indirectly.And indoor heat exchanger is not from room when this several ways only can guarantee that defrosting
Interior draw heat, condenser is heated when not ensuring that defrosting, and there is the problem of defrosting high energy consumption.
In recent years, experts and scholars propose the unit alternately defrosted using two groups of evaporators, such as Chinese utility model
Patent " a kind of double evaporators air source heat pump ", (application number：201420523171.8, publication date：2015-03-11).The system
In two evaporators need to carry out compressor load energy adjustment to adapt to Load Evaporator when alternately defrosting, if lacking reliable
It is too low and influence whole heat pump reliability of operation that energy adjustment means are then easily caused evaporating pressure, and excessive electromagnetism
Valve causes control complicated.
The content of the invention
It is an object of the invention to provide a kind of continuous heating air friction drag, control simple and reliable, low temperature
The energy consumption that defrosts is low, and heating operations continuous and stable under low temperature environment.
The technical solution for realizing the object of the invention is：
A kind of continuous heating air friction drag, including water-cooled condenser, the first compressor, the second compressor,
Air-cooled first evaporator, air-cooled second evaporator, first throttle valve module and second throttle component, in addition to the 3rd list
To valve, the first four-way reversing valve and the second four-way reversing valve, first exhaust outlet of compressor is through the first check valve and condenser
Entrance is communicated, and the second exhaust outlet of compressor is communicated through the second check valve with condenser inlet, and the of first four-way reversing valve
One interface is connected with the second interface of the second four-way reversing valve, second interface and the condensator outlet phase of the first four-way reversing valve
Even, the 3rd interface of the first four-way reversing valve is connected with the 3rd check valve inlet, and the outlet of the 3rd check valve passes through first throttle
Valve module is communicated with the first evaporator inlet, and the outlet of the 3rd check valve passes through second throttle component and the second evaporator inlet
Communicate, the first interface of second four-way reversing valve is connected with the first evaporator outlet, the 3rd of the second four-way reversing valve connects
Mouth is connected with the second evaporator outlet, and the 4th interface of the first four-way reversing valve is in parallel with the 4th interface of the second four-way reversing valve
The air entry with the first compressor, the second compressor is communicated afterwards.
Compared with prior art, its remarkable advantage is the present invention：
1st, heating operations continuous and stable：During defrosting, unit is heated simultaneously, improves the stability of added hot water temperature；
2nd, it is reliable：During defrosting, refrigerant improves the reliability of heat pump without commutation；Compared with epipodium
At a temperature of border during heating operation, can by regulation wherein evaporator as subcooler and combine regulation compressor start-up and shut-down control,
The energy adjustment of unit heating capacity can be achieved, to improve adaptability of the unit in annual heating operation to high environment temperature.
3rd, defrosting energy consumption is low：Using double-compressor parallel mode, it is ensured that effective energy of the compressor when alternately defrosting
Regulation；Defrosting process is because using the excessively cold and hot of the condensed high-temperature liquid state refrigerant of condensator outlet, treating defrosting evaporator conduct
Subcooler, realizes nearly zero energy consumption of defrosting process, improves the defrosting efficiency and performance of source pump；When frosting is serious, it can adopt
The superheated steam bypassed with defrosting bypass pipe is defrosted with the excessively cold and hot mode being combined, and accelerates defrosting process, improves defrosting
Efficiency.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the structural representation of continuous heating air friction drag of the present invention, and fortune is normally heated in low temperature
Row mode.
Fig. 2 is that continuous heating air friction drag described in Fig. 1 is in the first air-cooled condenser Defrost operation pattern
Fundamental diagram.
Fig. 3 is that continuous heating air friction drag described in Fig. 1 is in the second air-cooled condenser Defrost operation pattern
Or the fundamental diagram of high temperature heating mode.
In figure, the first compressor 1, gas-liquid separator 2, the second compressor 3, the second check valve 4, the first check valve 5, hot gas
By-passing valve 6, water-cooled condenser 7, the first four-way reversing valve 8, the 3rd check valve 9, second throttle component 10, first throttle valve group
Part 11, the first evaporator 12, the second four-way reversing valve 13, the second evaporator 14, compensator 15, oil equalizing pipe 16.
Embodiment
As shown in figure 1, continuous heating air friction drag of the present invention, including water-cooled condenser 7, the first compressor
1st, the second compressor 3, air-cooled first evaporator 12, air-cooled second evaporator 14, first throttle valve module 11 and second section
Flow valve module 10, in addition to the 3rd check valve 9, the first four-way reversing valve 8 and the second four-way reversing valve 13, first compressor
1 exhaust outlet is communicated through the first check valve 5 with the entrance of condenser 7, and the exhaust outlet of the second compressor 3 is through the second check valve 4 and condenser 7
Entrance is communicated, the first interface 8-1 of first four-way reversing valve 8 and the second four-way reversing valve 13 second interface 13-2 phases
Even, the second interface 8-2 of the first four-way reversing valve 8 is connected with the outlet of condenser 7, the 3rd interface 8-3 of the first four-way reversing valve 8
It is connected with the import of the 3rd check valve 9, the outlet of the 3rd check valve 9 passes through the entrance of 11 and first evaporator of first throttle valve module 12
Communicate, the outlet of the 3rd check valve 9 is communicated by second throttle component 10 with the entrance of the second evaporator 14, second four-way
The outlet of the first interface 13-1 of reversal valve 13 and the first evaporator 12 is connected, the 3rd interface 13-3 of the second four-way reversing valve 13 and
The outlet of second evaporator 14 is connected, the 4th interface 8-4 of the first four-way reversing valve 8 and the 4th interface of the second four-way reversing valve 13
Communicated after 13-4 is in parallel with the air entry of the first compressor 1, the second compressor 3.
As an improvement, continuous heating air friction drag of the present invention, in addition to hot gas bypass valve 6, its one end with
The entrance of condenser 7 is connected, and the other end is connected with the outlet of condenser 7.
When merely with HTHP be subcooled refrigerant liquid it is excessively cold and hot evaporator is defrosted when, easily defrosting slowly,
Hot gas bypass valve 6 is now opened, feeding after refrigerant liquid is mixed with HTHP compressor air-discharging, which will be subcooled, needs the steaming defrosted
Device is sent out, defrosting speed is accelerated.
Improved as another, continuous heating air friction drag of the present invention, in addition to gas-liquid separator 2, it goes out
Air entry of the mouth respectively with the first compressor 1, the second compressor 3 is communicated, the 4th interface of its entrance and the first four-way reversing valve 8
4th interface 13-4 of 8-4 and the second four-way reversing valve 13 is communicated.
As still another refinement, continuous heating air friction drag of the present invention, in addition to compensator 15, its openend
Outlet with the 3rd check valve 9 is communicated.
Preferably, the blower fan of the blower fan of first evaporator 12 and the second evaporator 14 is respectively configured, individually control.
It is further preferred that the first throttle valve module 11, the blower fan of the first compressor 1 and the first evaporator 12 are chain
Control, the blower fan chain control of the second throttle component 10, the second compressor 3 and the second evaporator 14.
As another improvement, in addition to oil equalizing pipe 16, its one end is connected with the bottom of the first compressor 1, the other end and second
The bottom of compressor 3 is connected.Prevent two evaporator oil returns uneven.
1-3 describes the course of work of the present invention in detail below in conjunction with the accompanying drawings.
The normal heating operation mode of a low temperature
Start the blower fan of the first compressor 1 and the first evaporator 12 first, open first throttle valve module 11, the first compression
The outlet of machine 1 HTHP cold media gas is flowed through to flow successively after the first check valve 5 after condenser 7 is condensed into high temperature high pressure liquid
Enter the evaporation endothermic of the first evaporator 12 after the first four-way reversing valve 8, the 3rd check valve 9, first throttle valve module 11 into low
Enter the second four-way reversing valve 13 after warm low pressure refrigerant gas, finally flow into gas-liquid separator 2.Or starting second first compresses
The blower fan of the evaporator 14 of machine 3 and second, opens second throttle component 10, the second compressor 3 outlet HTHP cold media gas
Flow through and flow through the first four-way reversing valve the 8, the 3rd after the second check valve 4 successively after condenser 7 is condensed into high temperature high pressure liquid
Enter the evaporation endothermic of the second evaporator 14 after check valve 9, second throttle component 10 into entering successively after low-temp low-pressure cold media gas
Enter the second four-way reversing valve 13 and the first four-way reversing valve 8, finally flow into gas-liquid separator 2.So after operation a period of time, open
Move another not actuated compressor and blower fan, another throttle valve component that either on or off, now the first compressor 1 and the second pressure
The exhaust of the HTHP of contracting machine 2 respectively through enter behind the first check valve 5 and the second check valve 4 interflow the exothermic condensation of condenser 7 into
HTHP refrigerant liquid, is then flowed through and is divided into two-way after the first four-way reversing valve 8, the 3rd check valve 9, and wherein the first via is passed through
First throttle valve module 11 enters the evaporation endothermic of the first evaporator 12 into low-temp low-pressure cold media gas after throttling, subsequently into second
Four-way reversing valve 13；It is low into low temperature that second tunnel enters the evaporation endothermic of the first evaporator 14 after the throttling of second throttle component 10
Press cold media gas, subsequently into the second four-way reversing valve 13, eventually pass after the first four-way reversing valve 8 with outflow the second four-way change
Enter gas-liquid separator 2 after to the first via low-temp low-pressure cold media gas mixing of valve 13.
The Defrost operation pattern of the first air-cooled condensers of b 12
Now heat pump is in normal heating mode a, and refrigerant is introduced into the evaporation endothermic of the first evaporator 12, when the first steaming
When the hair surface frost layer of device 12 reaches certain thickness, the first four-way reversing valve 8 commutates, first interface 8-1 and second interface 8-2 phases
Even, the 3rd interface 8-3 is connected with the 4th interface 8-4；Second four-way reversing valve 13 also commutates, and first interface 13-1 connects with second
Mouth 13-2 is connected, and the 3rd interface 13-3 is connected with the 4th interface 13-4.Simultaneously close off a compressor and carry out energy adjustment, first
The standard-sized sheet of throttle valve component 11, opens hot gas bypass valve 6, and the refrigerant HTHP exhaust into condenser 7 is divided into two-way, passes through all the way
Cross condenser 7 and be condensed into HTHP refrigerant liquid, another road flows through hot gas bypass valve 6 and bypassed, after the mixing of two-way refrigerant successively
Flow through and enter the heat release of the first evaporator 12 thawing surface frost layer, two-phase refrigerant after the first four-way reversing valve 8, four-way reversing valve 13
It is condensed into high pressure supercooling refrigerant liquid.Refrigerant liquid is subcooled after the first throttle valve module 11 of standard-sized sheet, into the second throttling
The reducing pressure by regulating flow of valve module 10, finally enters the evaporation endothermic of the second evaporator 14 and is changed into low-temperature low-pressure refrigerant gas, low-temp low-pressure
Cold media gas, which is flowed through, enters gas-liquid separator 2 after the second four-way reversing valve 13.
The Defrost operation pattern of the second air-cooled condensers of c 14
Now heat pump is in the normal heating mode a or Defrost operation pattern b of the first air-cooled condenser 12, when the second evaporator
When 14 surface frost layers reach certain thickness, the first interface 8-1 of the first four-way reversing valve 8 is connected with second interface 8-2, the 3rd
Interface 8-3 is connected with the 4th interface 8-4；The first interface 13-1 of second four-way reversing valve 13 is connected with the 4th interface 13-4, the
Three interface 13-3 are connected with second interface 13-2.Simultaneously close off a compressor and carry out energy adjustment, second throttle component 10
Standard-sized sheet, opens hot gas bypass valve 6, and the refrigerant HTHP exhaust into condenser 7 is divided into two-way, cold by condenser 7 all the way
Coagulate for HTHP refrigerant liquid, another road flows through hot gas bypass valve 6 and bypassed, the first four-way is flowed through successively after the mixing of two-way refrigerant
Enter the heat release of the second evaporator 14 after reversal valve 8, four-way reversing valve 13 and melt surface frost layer, two-phase refrigerant is condensed into high pressure supercooling
Refrigerant liquid.Refrigerant liquid is subcooled after the second throttle component 10 of standard-sized sheet, throttles and drops into first throttle valve module 11
Pressure, finally enters the evaporation endothermic of the first evaporator 12 and is changed into low-temperature low-pressure refrigerant gas, and low-temp low-pressure cold media gas flows through the
Enter gas-liquid separator 2 after two four-way reversing valves 13.
D high temperature heating modes
When environment temperature is higher, because of the rise of system evaporating pressure, unit heating capacity is significantly increased, and will cause condenser 7
Heat exchange area is inadequate, even more so that compressor 1 and the alarm for high voltage of compressor 2, now need to switch to high temperature heating mode.Can be with
First evaporator 12 is used as condenser, the first interface 8-1 of the first four-way reversing valve is connected with second interface 8-2,
3rd interface 8-3 is connected with the 4th interface 8-4；The first interface 13-1 of second four-way reversing valve 13 and second interface 13-2 phases
Even, the 3rd interface 13-3 is connected with the 4th interface 13-4.The standard-sized sheet of first throttle valve module 11, into the refrigerant high temperature of condenser 7
High pressure gas by condenser 7 condensation after flow through after the first four-way reversing valve 8, four-way reversing valve 13 enter the first evaporator 12 after
It is continuous to be condensed into HTHP supercooling refrigerant liquid.Refrigerant liquid is subcooled after the first throttle valve module 11 of standard-sized sheet, into the
The reducing pressure by regulating flow of two throttle valve component 10, finally enters the evaporation endothermic of the second evaporator 14 and is changed into low-temperature low-pressure refrigerant gas, low
Warm low pressure refrigerant gas, which is flowed through, enters gas-liquid separator 2 after the second four-way reversing valve 13.Or it regard the second evaporator 14 as condensation
Device is used, and the first interface 8-1 of the first four-way reversing valve 8 is connected with second interface 8-2, the 3rd interface 8-3 and the 4th interface
8-4 is connected；The first interface 13-1 of second four-way reversing valve 13 is connected with the 4th interface 13-4, and the 3rd interface 13-3 connects with second
Mouth 13-2 is connected.The standard-sized sheet of second throttle component 10, into the refrigerant HTHP exhaust lease making of condenser 7, to cross condenser 7 cold
Flowed through successively after solidifying after first four-way reversing valve 8, four-way reversing valve 13 and to continue to be condensed into HTHP into the second evaporator 14
Refrigerant liquid is subcooled.Refrigerant liquid is subcooled after the second throttle component 10 of standard-sized sheet, is saved into first throttle valve module 11
Stream decompression, finally enters the evaporation endothermic of the first evaporator 12 and is changed into low-temperature low-pressure refrigerant gas, low-temp low-pressure cold media gas stream
Enter gas-liquid separator 2 after the second four-way reversing valve 13.When air-cooled evaporator evaporation hypotony in unit, it is closed
In a compressor carry out energy adjustment.
The continuous heating air friction drag of the present invention, using two compressors in parallel, two groups of wind in parallel
Cold type evaporator and throttle valve component, two be used to heating the four-way reversing valve switched with defrosting mode, and to every group of compressor,
Throttle valve component and evaporator fan chain control, to realize that two groups of evaporators are run and frosting in order.Removed in unit
When white, two evaporators carry out alternately defrosting by the function switching of two four-way reversing valves and two groups of throttle valve components, wherein locating
In defrosting state evaporator function equivalent to subcooler, and the evaporator for being not in defrosting state then continues to serve as the angle of script
Color, and a wherein compressor out of service carries out energy adjustment, realizes the continuous heating of unit；When unit is compared with epipodium
At a temperature of border during heating operation, the start-up and shut-down control of compressor is closed as subcooler parallel connection by adjusting a wherein evaporator, can be real
The energy adjustment of existing unit heating capacity.The present invention compared with prior art, is provided with the advantage that refrigerant does not commutate during defrosting,
Reliability is higher；Heat and proceed defrost simultaneously during, improve comfort；And considerably reduce heat pump machine
The power consumption of group defrosting process, substantially increases defrosting efficiency；And unit is improved in annual heating operation to high environment temperature
Adaptability.
Claims (7)
1. a kind of continuous heating air friction drag, including water-cooled condenser (7), it is characterized in that：
Including the first compressor (1), the second compressor (3), air-cooled first evaporator (12), air-cooled second evaporator
(14), first throttle valve module (11) and second throttle component (10), in addition to the commutation of the 3rd check valve (9), the first four-way
Valve (8) and the second four-way reversing valve (13),
First compressor (1) exhaust outlet is communicated through the first check valve (5) with condenser (7) entrance, the second compressor (3) row
Gas port is communicated through the second check valve (4) with condenser (7) entrance,
The first interface (8-1) of first four-way reversing valve (8) and the second interface (13-2) of the second four-way reversing valve (13)
It is connected, the second interface (8-2) of the first four-way reversing valve (8) is connected with condenser (7) outlet, the first four-way reversing valve (8)
3rd interface (8-3) is connected with the 3rd check valve (9) import,
The outlet of 3rd check valve (9) is communicated by first throttle valve module (11) with the first evaporator (12) entrance, and the 3rd is single
Communicated to the outlet of valve (9) by second throttle component (10) with the second evaporator (14) entrance,
The first interface (13-1) of second four-way reversing valve (13) is connected with the first evaporator (12) outlet, and the second four-way is changed
It is connected to the 3rd interface (13-3) of valve (13) with the second evaporator (14) outlet,
4th interface (8-4) of the first four-way reversing valve (8) is in parallel with the 4th interface (13-4) of the second four-way reversing valve (13)
The air entry with the first compressor (1), the second compressor (3) is communicated afterwards.
2. air friction drag according to claim 1, it is characterised in that：
Also include hot gas bypass valve (6), its one end is connected with condenser (7) entrance, the other end is connected with condenser (7) outlet.
3. air friction drag according to claim 1 or 2, it is characterised in that：
Also include gas-liquid separator (2), its air entry for exporting respectively with the first compressor (1), the second compressor (3) is communicated,
4th interface (8-4) and the 4th interface (13-4) of the second four-way reversing valve (13) of its entrance and the first four-way reversing valve (8)
Communicate.
4. air friction drag according to claim 3, it is characterised in that：
Also include compensator (15), its openend is communicated with the outlet of the 3rd check valve (9).
5. air friction drag according to claim 1, it is characterised in that：
The blower fan of the blower fan and the second evaporator (14) of first evaporator (12) is respectively configured, individually control.
6. air friction drag according to claim 5, it is characterised in that：
The first throttle valve module (11), the blower fan chain control of the first compressor (1) and the first evaporator (12), described the
The blower fan chain control of two throttle valve components (10), the second compressor (3) and the second evaporator (14).
7. air friction drag according to claim 1, it is characterised in that：
Also include oil equalizing pipe (16), its one end is connected with the first compressor (1) bottom, the other end and the second compressor (3) bottom
It is connected.
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| CN201710390318.9A CN107120831B (en) | 2017-05-27 | 2017-05-27 | A kind of continuous heating air friction drag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388665A (en) * | 2017-08-22 | 2017-11-24 | 广东美的暖通设备有限公司 | Heat pump components, defrosting control method and storage medium |
| CN107525316A (en) * | 2017-11-01 | 2017-12-29 | 罗良宜 | A kind of continuous defroster of hot-gas bypass pressurization backflow |
| CN108826738A (en) * | 2018-08-01 | 2018-11-16 | 安徽欧瑞达电器科技有限公司 | A kind of high temperature modification Hot water units |
| CN110926046A (en) * | 2019-11-29 | 2020-03-27 | 佛山市顺德区金舵空调冷冻设备有限公司 | Refrigerating device |
| CN113994159A (en) * | 2019-02-27 | 2022-01-28 | 里姆制造公司 | Pressure spike prevention in heat pump systems |
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