CN105928251A - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- CN105928251A CN105928251A CN201610296389.8A CN201610296389A CN105928251A CN 105928251 A CN105928251 A CN 105928251A CN 201610296389 A CN201610296389 A CN 201610296389A CN 105928251 A CN105928251 A CN 105928251A
- Authority
- CN
- China
- Prior art keywords
- oil
- compressor
- electromagnetic valve
- heat pump
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Disclosed is a heat pump. An oil filter is further arranged on a connecting pipe between an oil separator and an air suction opening of a compressor, and an exhaust opening of the compressor is sequentially connected with a gas and liquid separator and the air suction side of the compressor through a cooling energy storage device, a first electromagnetic valve (11) and a second throttling mechanism; when the temperature rise of the exhaust side is abnormal, the electromagnetic valve is opened, and through heat exchange of the cooling energy storage device and expansion of the second throttling mechanism, part of exhaust temperature can be rapidly reduced; a pipeline is further arranged between an outlet of an oil separator and a steering device and is connected to an auxiliary heat exchanger through the cooling energy storage device and a second electromagnetic valve and connected to the air suction side of the compressor through the second throttling mechanism and the gas and liquid separator; and when it is detected that the pressure rise of the exhaust side of the compressor is too rapid, the second electromagnetic valve is opened, the cooling energy storage device is operated, the heat exchanger is assisted, and the exhaust pressure is reduced.
Description
Technical field:
The present invention relates to heat pump/refrigerating field of energy-saving technology.
Background technology:
Heat pump is a kind of energy-saving and environmental protection, comfortable refrigeration system, is widely used in the fields such as factory, laboratory and common implementing
Institute.In system, generally include the structures such as compressor, cross valve, outdoor heat-exchange device, throttle mechanism and indoor heat converter
The loop become.
In prior art, when accumulating certain time length at runtime due to source pump, the impurity in machine oil is piled up, and causes
Savings foreign body in oil return pipeline, causes the machine oil returning compressor not enough, thus affects compressor performance and unit performance
Even burn compressor.And when thus causing compressor high side pressure and excessive discharge temperature, the solution hands of prior art
Section is off compressor, after standby a period of time, then starts running.Thus have impact on the operational efficiency of system, source pump
The most therefore life-span reduces.
Further, compressor and connecting pipeline thereof need to be removed during due to maintenance machine oil blocking, thus cause heat pump to run, tear open
The process of dress also expends a large amount of operation, relatively costly.
Summary of the invention:
One of the object of the invention is to provide for a kind of heat pump, and it can provide a kind of oil-returning structure so that greatly reduces oil return
The problem of blocking.
The present invention also aims to provide a kind of heat pump, it can be when system discharge pressure and temperature occur abnormal, it is not necessary to stop
Machine can reduce pressure at expulsion and delivery temperature, is allowed to run continuously.
A kind of heat pump of offer is provided, including compressor, oil eliminator, transfer, outdoor heat utilization device,
It is main system that first throttle mechanism, indoor heat utilization device, gas-liquid separator pass sequentially through the loop that pipeline is formed by connecting
Cold heat loop, it is characterised in that: it is additionally provided with oil screen in the connecting tube between oil eliminator and the air entry of compressor, pressure
The air vent of contracting machine is also sequentially connected with gas-liquid separator to compressor through cooling accumulator, the first electromagnetic valve 11, second throttle body
Suction side.When exhaust side temperature rise abnormity, open electromagnetic valve so that it is through the heat exchange of cooling accumulator, again warp
The expansion of second throttle body, can reduce rapidly portion discharge temperature；It is additionally provided with pipe between outlet and the transfer of oil eliminator
Road, through cooling accumulator, the second electromagnetic valve, is connected to secondary unit, the most successively through second throttle body, gas-liquid separation
Device is connected to the suction side of compressor, too fast when detecting that compressor air-discharging lateral pressure rises, then open the second electromagnetic valve 8, fortune
Row cooling accumulator, secondary unit so that reduce pressure at expulsion.
The present invention also provides for a kind of heat pump, it is characterised in that oil screen is detachably connected with connecting tube, and both can weld,
Can also be by being connected with connecting tube by screw and nut in the two ends import of oil screen, outlet.
The present invention also provides for a kind of heat pump, it is characterised in that having the oil-in reduced in the pipe of oil screen, oil-in is passed through
Extend radially inwardly out in projection forms ring wall surface, namely pipe the ring wall surface formed from the tube wall of oil screen, wall center is stayed
Aperture is had to constitute oil-in, having for the downstream to the inclined wall managing tilted extension, the downstream tool of oil-in of oil-in
There is oil export, constitute between oil-in and oil export and post fibrous filter net on the space of expansion, and the inwall of pipe between the two.
The present invention also provides for a kind of heat pump, it is characterised in that the angle of inclination of inclined wall is preferably 60-80 degree.
The present invention also provides for a kind of heat pump, it is characterised in that having heat-absorbing energy-accumulating material in cooling accumulator, cooling accumulator can
To be connected to heating equipment, its heat is available for utilizing.
The present invention also provides for the control method of a kind of heat pump, it is characterised in that comprise the following steps:
Also including the sensor detecting the pressure at expulsion of compressor, set T interval time, time T is 12 hours, from compressor start
Every T time, controller compares the exhaust pressure value of pressure at expulsion and the setting detected；
When the exhaust pressure value of detection is more than setting value, then open the second electromagnetic valve so that the cold-producing medium of compressor outlet is by oil point
Compressor is returned through gas-liquid separator again from device, cooling accumulator, the second electromagnetic valve, secondary unit, second throttle body；
After opening the second electromagnetic valve, controller is 30 minutes every T2 time, T2, compares the row of pressure at expulsion and the setting detected
Air pressure force value, when pressure at expulsion=setting value being detected, then closes the second electromagnetic valve through the T2 time；
When detecting that pressure at expulsion is less than setting value, then close electromagnetic valve.
Above-mentioned method further comprises following steps: include detecting the sensor of delivery temperature, and from compressor start
Every T time, controller compares the outlet air temperature of delivery temperature and the setting detected；
When the outlet air temperature of detection is more than setting value, then open the first electromagnetic valve so that the cold-producing medium of compressor outlet is by cooling
Accumulator, the first electromagnetic valve, second throttle body return compressor through gas-liquid separator again；
After opening the first electromagnetic valve, controller, every the T2 time, compares the outlet air temperature of delivery temperature and the setting detected, works as inspection
When measuring delivery temperature=setting value, then close the first electromagnetic valve through the T2 time；
When detecting that delivery temperature is less than setting value, then close the first electromagnetic valve.
Accompanying drawing description of contents
Accompanying drawing 1 is the heat pump schematics of the present invention.
Accompanying drawing 2 is the oil-filtering apparatus structural representation of the heat pump of the present invention.
Detailed description of the invention
As it is shown in figure 1, the heat pump of the present invention includes compressor 1, oil eliminator 2, transfer 3, outdoor heat utilization device
4, first throttle mechanism 5, indoor heat utilization device 6, gas-liquid separator 7 pass sequentially through the loop that pipeline is formed by connecting.
Wherein compressor 1, oil eliminator 2, transfer 3, outdoor heat utilization device 4, first throttle mechanism 5, Indoor Thermal utilize
It is main cooling and warming loop that device 6, gas-liquid separator 7 pass sequentially through the loop that pipeline is formed by connecting.
In this major loop, circulation has cold-producing medium, and during refrigeration mode, wherein compressor 1 compression refrigerant is the gas of High Temperature High Pressure,
This gas carries out Oil-gas Separation through oil eliminator 2, and the diverted device of refrigerant gas 3 after separation flows to outdoor heat utilization dress
Put 4 condensations, enter back into after first throttle mechanism 5 is throttled expansion, enter indoor heat utilization device 6 and evaporate, low after evaporation
Temperature cold-producing medium enters gas-liquid separator 7 and carries out gas-liquid separation, returns to the suction inlet of compressor 1.
During heating mode, wherein compressor 1 compression refrigerant is the gas of High Temperature High Pressure, and this gas is carried out through oil eliminator 2
Oil-gas Separation, the diverted device of refrigerant gas 3 after separation flows to indoor heat utilization device 6 and condenses, enters back into first throttle
After mechanism 5 is throttled expansion, entering outdoor heat utilization device 6 and evaporate, the low-temperature refrigerant after evaporation enters gas-liquid separator 7
Carry out gas-liquid separation, return to the suction inlet of compressor 1.
Wherein isolated machine oil in gs-oil separator 2, automatically returns to the air entry of compressor, to pressure under high pressure effect
Contracting machine is lubricated.
In the system of the present invention, the connecting tube between the air entry of oil eliminator 2 and compressor 1 is additionally provided with oil screen
12, see accompanying drawing 2, accompanying drawing 2 is its concrete structure schematic diagram, and oil screen 12 is detachably connected with connecting tube, and both are permissible
Welding, it is also possible to by being connected with connecting tube by screw and nut in the two ends import 14 of oil screen 12, outlet 15, thus side
Just periodically oil screen 12 is disassembled, be carried out maintenance.
Oil screen 12 has the outward appearance being matched with connecting tube 13, has the oil-in 16 reduced in the pipe of oil screen 12, and oil enters
Mouth 16 forms ring wall surface, namely the interior ring wall surface formed of pipe by extending radially inwardly out projection from the tube wall of oil screen 12,
Wall center is left aperture and is constituted oil-in 16, oil-in 16 have for the downstream to manage tilted extension wall, its
Angle of inclination is preferably 60-80 degree, and the downstream of oil-in 16 has oil export 17, constitutes between oil-in 16 and oil export 17
The space expanded, and post fibrous filter net on the inwall of pipe between the two.
Thus lubricating oil is under the ordering about of high pressure, enters from narrow oil-in 16, diffuse to suddenly whole through inclined wall
Chamber, the collision with wall of lubricating oil and pipe, thus its impurity is by fibrous filter net adsorption precipitation, through deimpurity lubricating oil from
Oil export 17 flows out, and returns compressor.Lubricating oil hence into compressor 1 has pure quality, decreases machine in pipeline
The problem of oil blocking, improves the operational energy efficiency of system.
As an alternative embodiment of the invention, seeing Fig. 2, the top half of the inside pipe wall of oil screen 12 can be made into shape
Becoming multiple projection, this projection can be del, inverted trapezoidal or erose projection, and near oil-in 16
The density of projection is more than the density of the projection near oil export 17, and the latter half of the inside pipe wall of oil screen 12 arranges the fibre of setting
Dimension net 20, thus machine oil is after oil-in 16 enters, through the strong shock with the triangle projection at the top of upstream, under impurity
Falling, substantially kept off the bottom wall in upstream by fabric screen, the purest machine oil can flow out from oil export 17.
As the preferred embodiments of the present invention, the aperture of oil-in 16 is less than oil export 17, thus ensure that the speed that machine oil flows out
Rate and flow.
The present invention, by arranging oil filter 12 between the air entry and gs-oil separator 2 of compressor 1, can efficiently reduce profit
The fault of lubricating oil blocking.And only need maintainer periodically to dismount oil filter 12, it can be cleared up.Even occurring in that inspection
The personnel of repairing forget the situations such as cleaning, or the compressor air-discharging side caused because of other position machine oil blocking compressor lubrications deficiencies etc.
The exception of temperature and pressure raises, and by the hot pump structure of the present invention, can eliminate abnormal in the case of non-stop-machine.
With reference to the accompanying drawings 1, the air vent of compressor 1 also connects successively through cooling accumulator 13, electromagnetic valve 11, expansion valve 10
Connect gas-liquid separator 7 and the suction side of compressor 1.When exhaust side temperature rise abnormity, open electromagnetic valve 11 so that it is pass through
The heat exchange of cooling accumulator 13, the expansion of the most expanded valve 10, can reduce rapidly portion discharge temperature.
It is additionally provided with pipeline between outlet and the transfer 3 of gs-oil separator 2, through cooling accumulator 13, electromagnetic valve 8, connects
Be connected to secondary unit 9, the most expanded valve 10, gas-liquid separator 7 are connected to the suction side of compressor.When pressure being detected
Contracting machine exhaust lateral pressure rises too fast, then open electromagnetic valve 8, runs cooling accumulator 13, secondary unit 9 so that fall
Low pressure at expulsion.
Having energy storage material in cooling accumulator 13, cooling accumulator 13 can be connected to heating equipment, and its heat is available for profit
With.
Thus, the heat pump of the present invention also has the operation method eliminating high pressure-temperature exception.Heating normally or refrigerating operaton
Time, also include the sensor detecting the pressure at expulsion of compressor 1, and the sensor of detection delivery temperature, set interval time
T, if time T is 12 hours, from compressor start every T time, controller compares the pressure at expulsion and setting detected
Exhaust pressure value.When the exhaust pressure value of detection is more than setting value, then open electromagnetic valve 8 so that the system of compressor 1 outlet
Cryogen passes through oil eliminator 2, cooling accumulator 13, electromagnetic valve 8, secondary unit 9, expansion valve 10 again through gas-liquid separation
Device 7 returns compressor 1.After opens solenoid valve 8, controller, every the T2 time, such as 30 minutes, compares the aerofluxus detected
Pressure and the exhaust pressure value of setting, when pressure at expulsion=setting value being detected, then close electromagnetic valve 8 through the T2 time；When
Detect when pressure at expulsion is less than setting value, then close electromagnetic valve 8.
And from compressor start every T time, controller compares the outlet air temperature of delivery temperature and the setting detected.
When the outlet air temperature of detection is more than setting value, then open electromagnetic valve 11 so that the cold-producing medium of compressor 1 outlet is by cooling
Accumulator 13, electromagnetic valve 11, expansion valve 10 return compressor 1 through gas-liquid separator 7 again.After opens solenoid valve 11, control
Device is every the T2 time, such as 30 minutes, compares the outlet air temperature of delivery temperature and the setting detected, when aerofluxus temperature being detected
During degree=setting value, then close electromagnetic valve 11 through the T2 time；When detecting that delivery temperature is less than setting value, then close electromagnetism
Valve 11.
Thus, the heat pump of the present invention arranges oil filter structure by compressor 1 air entry, can efficiently reduce machine oil blocking event
Barrier, and, even if there is the system high temperature High Abnormal Pressure caused due to plugging fault once in a while, also can be by dresses such as cooling accumulators
Put and realize timely early warning, rapid decrease temperature and pressure, and without shutting down, thus improve the operational efficiency of heat pump.
Claims (10)
1. heat pump, wherein compressor, oil eliminator, transfer, outdoor heat utilization device, first throttle mechanism, Indoor Thermal utilize
It is main cooling and warming loop that device, gas-liquid separator pass sequentially through the loop that pipeline is formed by connecting, it is characterised in that:
Being additionally provided with oil screen in connecting tube between oil eliminator and the air entry of compressor, the air vent of compressor is also through cooling energy storage
Device, the first electromagnetic valve 11, second throttle body are sequentially connected with gas-liquid separator to the suction side of compressor.When on exhaust side temperature
When rising abnormal, open electromagnetic valve so that it is through the heat exchange of cooling accumulator, again through the expansion of second throttle body, can be fast
Prompt drop lower part delivery temperature；It is additionally provided with pipeline, through cooling accumulator, the second electricity between outlet and the transfer of oil eliminator
Magnet valve, it is connected to secondary unit, is connected to the suction side of compressor the most successively through second throttle body, gas-liquid separator,
Too fast when detecting that compressor air-discharging lateral pressure rises, then open the second electromagnetic valve 8, run cooling accumulator, auxiliary heat exchange
Device so that reduce pressure at expulsion.
2. heat pump as claimed in claim 1, it is characterised in that oil screen is detachably connected with connecting tube, and both can weld,
Can also be by being connected with connecting tube by screw and nut in the two ends import of oil screen, outlet.
3. heat pump as claimed in claim 1, it is characterised in that there is in the pipe of oil screen the oil-in reduced, oil-in by from
The tube wall of oil screen extends radially inwardly out in projection forms ring wall surface, namely pipe the ring wall surface formed, and wall center is left
Aperture constitutes oil-in, and having for the downstream to the inclined wall managing tilted extension of oil-in, the downstream of oil-in has
Oil export, constitutes between oil-in and oil export and posts fibrous filter net on the space of expansion, and the inwall of pipe between the two.
4. heat pump as claimed in claim 3, it is characterised in that the angle of inclination of inclined wall is preferably 60-80 degree.
5. heat pump as claimed in claim 1, it is characterised in that there is in the pipe of oil screen the oil-in reduced, oil-in by from
The tube wall of oil screen extends radially inwardly out in projection forms ring wall surface, namely pipe the ring wall surface formed, and wall center is left
Aperture constitutes oil-in, and having for the downstream to the inclined wall managing tilted extension of oil-in, the downstream of oil-in has
Oil export, constitutes the space of expansion between oil-in and oil export, and the inwall top half wall of pipe between the two is formed many
Individual projection, the latter half of inside pipe wall arranges the fleece of setting.
6. heat pump as claimed in claim 5, it is characterised in that: this projection can be del, inverted trapezoidal or irregularly shaped
Projection.
7. heat pump as claimed in claim 5, it is characterised in that: the density of the projection near oil-in is more than the projection near oil export
Density.
8. the heat pump as described in claim 3 or 5, it is characterised in that: the aperture of oil-in is less than oil export.
9. the method controlling heat pump as claimed in claim 1, it is characterised in that comprise the following steps:
Also including the sensor detecting the pressure at expulsion of compressor, set T interval time, time T is 12 hours, from compressor start
Every T time, controller compares the exhaust pressure value of pressure at expulsion and the setting detected；
When the exhaust pressure value of detection is more than setting value, then open the second electromagnetic valve so that the cold-producing medium of compressor outlet is by oil point
Compressor is returned through gas-liquid separator again from device, cooling accumulator, the second electromagnetic valve, secondary unit, second throttle body；
After opening the second electromagnetic valve, controller is 30 minutes every T2 time, T2, compares the row of pressure at expulsion and the setting detected
Air pressure force value, when pressure at expulsion=setting value being detected, then closes the second electromagnetic valve through the T2 time；
When detecting that pressure at expulsion is less than setting value, then close electromagnetic valve.
10. control method as claimed in claim 9, it is characterised in that further comprising the steps of: include the sensor detecting delivery temperature,
And from compressor start every T time, controller compares the outlet air temperature of delivery temperature and the setting detected；
When the outlet air temperature of detection is more than setting value, then open the first electromagnetic valve so that the cold-producing medium of compressor outlet is by cooling
Accumulator, the first electromagnetic valve, second throttle body return compressor through gas-liquid separator again；
After opening the first electromagnetic valve, controller, every the T2 time, compares the outlet air temperature of delivery temperature and the setting detected, works as inspection
When measuring delivery temperature=setting value, then close the first electromagnetic valve through the T2 time；
When detecting that delivery temperature is less than setting value, then close the first electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296389.8A CN105928251B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296389.8A CN105928251B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105928251A true CN105928251A (en) | 2016-09-07 |
| CN105928251B CN105928251B (en) | 2018-05-08 |
Family
ID=56834383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610296389.8A Expired - Fee Related CN105928251B (en) | 2016-05-06 | 2016-05-06 | Heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105928251B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895519A (en) * | 2017-02-06 | 2017-06-27 | 美的集团股份有限公司 | Air-conditioning system and air-conditioner control method |
| EP4265980A4 (en) * | 2020-12-18 | 2024-05-08 | Mitsubishi Electric Corporation | Cold heat source unit and refrigeration cycle device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100133647A (en) * | 2009-06-12 | 2010-12-22 | (주)유한 | A compressor protecting device for the heatpump |
| CN102635977A (en) * | 2011-12-31 | 2012-08-15 | 广东欧科空调制冷有限公司 | Low-temperature full-heat recycling type air-cooling heat pump set |
| CN103542606A (en) * | 2013-10-31 | 2014-01-29 | Tcl空调器(中山)有限公司 | Heat pump air conditioning system and control method thereof |
| CN104132487A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump system of double-pressure control |
| CN204555425U (en) * | 2015-01-22 | 2015-08-12 | 宁波赛森节能设备有限公司 | A kind of ultra-low-loop temperature air source heat pump with backheat |
| CN105241105A (en) * | 2015-10-22 | 2016-01-13 | 湖南大学 | Refrigerating system based on oil cooling compression circulation |
| CN205137982U (en) * | 2015-09-22 | 2016-04-06 | 苏州工业园区瀚科机器制造有限公司 | Two return circuit heat accumulation defrosting type air conditioners |
-
2016
- 2016-05-06 CN CN201610296389.8A patent/CN105928251B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100133647A (en) * | 2009-06-12 | 2010-12-22 | (주)유한 | A compressor protecting device for the heatpump |
| CN102635977A (en) * | 2011-12-31 | 2012-08-15 | 广东欧科空调制冷有限公司 | Low-temperature full-heat recycling type air-cooling heat pump set |
| CN103542606A (en) * | 2013-10-31 | 2014-01-29 | Tcl空调器(中山)有限公司 | Heat pump air conditioning system and control method thereof |
| CN104132487A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump system of double-pressure control |
| CN204555425U (en) * | 2015-01-22 | 2015-08-12 | 宁波赛森节能设备有限公司 | A kind of ultra-low-loop temperature air source heat pump with backheat |
| CN205137982U (en) * | 2015-09-22 | 2016-04-06 | 苏州工业园区瀚科机器制造有限公司 | Two return circuit heat accumulation defrosting type air conditioners |
| CN105241105A (en) * | 2015-10-22 | 2016-01-13 | 湖南大学 | Refrigerating system based on oil cooling compression circulation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895519A (en) * | 2017-02-06 | 2017-06-27 | 美的集团股份有限公司 | Air-conditioning system and air-conditioner control method |
| CN106895519B (en) * | 2017-02-06 | 2019-11-22 | 美的集团股份有限公司 | Air-conditioning system and air-conditioner control method |
| EP4265980A4 (en) * | 2020-12-18 | 2024-05-08 | Mitsubishi Electric Corporation | Cold heat source unit and refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105928251B (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104457002B (en) | Integrated double-cooling water chilling unit | |
| CN107917505B (en) | Multi-split air conditioning system and outdoor unit defrosting control method thereof | |
| CN103398520B (en) | The liquid-level detecting method of air-conditioning system and gas-liquid separator thereof | |
| CN103615836B (en) | A kind of screw total heat recovery air-cooled heat-pump air-conditioner group | |
| CN104864621B (en) | A kind of four-pipe system Dual-evaporator refrigeration system | |
| CN105910337A (en) | Heat pump | |
| CN106705467B (en) | Transcritical CO2 heat pump heat supply system and heat supply method | |
| CN205425550U (en) | Refrigerating system and throttling arrangement thereof | |
| CN106151176A (en) | The method of work of the temperature control industrial refrigerating plant of the hydraulic pressure bypass with ball-type relief valve | |
| CN109813009A (en) | Air conditioning system and oil return control method thereof | |
| CN106839518A (en) | The double cold and hot pump assemblys of integral type | |
| CN107044699A (en) | A kind of intelligent water cold mould thermostatic and humidistatic air conditioning unit and its temperature and humidity regulation method | |
| CN105928251A (en) | Heat pump | |
| CN208832629U (en) | A kind of low-temperature cold water unit | |
| CN106642470A (en) | Water-cooling type thermostatic and humidity-static air conditioner | |
| CN201615644U (en) | Air conditioner refrigerant circulating unit | |
| CN105066494A (en) | Nuclear-grade direct evaporation combined type air handling unit and control method thereof | |
| CN108917376B (en) | Dehumidification type heat recovery closed cycle heat pump drying system in high-dust environment | |
| CN106196766A (en) | The method of work of the industrial refrigerating plant with tube heater | |
| CN105928252B (en) | Heat pump | |
| CN105928275B (en) | Heat pump | |
| CN103649653B (en) | There is the refrigerating circuit that oil subsidy is repaid | |
| CN106546025A (en) | Heat exchange system and air conditioner | |
| CN204255046U (en) | Outlet freeze-day with constant temperature machine | |
| CN204388410U (en) | The two cold handpiece Water Chilling Units of integral type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20200506 |