CN107763888A - A kind of dynamic degree of superheat control system - Google Patents
A kind of dynamic degree of superheat control system Download PDFInfo
- Publication number
- CN107763888A CN107763888A CN201711154413.5A CN201711154413A CN107763888A CN 107763888 A CN107763888 A CN 107763888A CN 201711154413 A CN201711154413 A CN 201711154413A CN 107763888 A CN107763888 A CN 107763888A
- Authority
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- China
- Prior art keywords
- refrigerant
- side heat
- water
- temperature sensor
- heat exchanger
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- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000008676 import Effects 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 11
- 238000004378 air conditioning Methods 0.000 abstract 1
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
-
- 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
- F25B2600/02—Compressor control
-
- 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
- F25B2600/2513—Expansion 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
- F25B2700/2103—Temperatures near a heat exchanger
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a kind of dynamic degree of superheat control system, including the compressor with refrigerant import and refrigerant exit, with heat regenerator water inlet, heat regenerator delivery port, the heat regenerator of refrigerant import and refrigerant exit, four-way reversing valve, air side heat exchanger with air side heat exchanger refrigerant import and air side heat exchanger refrigerant exit, expansion valve with refrigerant import and refrigerant exit, reservoir with refrigerant import and refrigerant exit, with evaporator water inlet, evaporator delivery port, the evaporator of evaporator refrigerant import and evaporator refrigerant exit, air-conditioning system with the gas-liquid separator of refrigerant import and refrigerant exit composition, the present invention solves single heating aqueous mode opportunity group because of the change of environment temperature, the problem of causing suction superheat excessive or be too small, improve the operating efficiency of whole unit.
Description
Technical field
The present invention relates to a kind of technical field of refrigerating devices, more particularly to a kind of dynamic degree of superheat control system.
Background technology
In existing refrigerating plant, when list heats aqueous mode, variation of ambient temperature can influence the suction superheat of unit
Size, so as to cause the suction superheat of unit excessive or too small, reduce the operating efficiency of system, in conventional system only
Fixed target superheat degree control, during variation of ambient temperature, air side heat exchanger receives the influence of environment temperature, heat exchange efficiency have compared with
Big change, fixed target superheat degree can not meet the operation of unit efficient stable, and control system of the invention is with environment temperature
The change of degree, target superheat degree change automatically, solve the problems, such as that conventional unit is inefficient because of the change of environment temperature.
The content of the invention
The present invention provides a kind of dynamic degree of superheat control system in view of the deficiencies of the prior art, according to environment temperature certainly
Dynamic amendment target air-breathing
The function of the degree of superheat, a kind of dynamic degree of superheat control system provided by the invention, including with compressor refrigerant import and
The compressor of compressor refrigerant exit, there is heat regenerator water inlet, heat regenerator delivery port, heat regenerator refrigerant import and heat
The heat regenerator of recover refrigerant exit, four-way reversing valve, there is air side heat exchanger refrigerant import and air side heat exchanger refrigerant to go out
The air side heat exchanger of mouth, electric expansion valve, have water-side heat water inlet, water-side heat delivery port, water-side heat cold
Matchmaker's import and the water-side heat gas-liquid separator of water-side heat refrigerant exit, it is characterised in that：Compressor outlet and heat are returned
Receive and be provided with high-pressure pressure sensor and exhaust gas temperature sensor, the gas-liquid separator refrigerant at the interface channel of device refrigerant import
The interface channel of outlet and compressor refrigerant import is provided with low-pressure sensor and suction temperature sensor, the heat
Recover water inlet is provided with hot water inflow temperature sensor, and the heat regenerator delivery port is provided with hot water effluent's temperature sensor,
The air side heat exchanger is provided with coil temperature sensor, and the air side heat exchanger comprises at least fin, and the fin is provided with ring
Border temperature sensor.
As a preference of the present invention, including the reservoir with reservoir refrigerant import and reservoir refrigerant exit, second
In parallel formed of check valve and the 4th check valve, the second check valve and the 4th check valve heats unidirectional valve assembly, the reservoir
Refrigerant exit is connected with the unidirectional valve assembly of heating, and electric expansion valve is provided with the interface channel of series connection.
As a preference of the present invention, also including four-way reversing valve and the first check valve, the heat regenerator passes through described four
Logical reversal valve is connected with the air side heat exchanger, and the air side heat exchanger is connected by first check valve and the reservoir
Connect, the reservoir is connected with the water-side heat, and the water-side heat passes through the four-way reversing valve and the gas-liquid
Separator connects, and the gas-liquid separator is connected to form loop with the compressor.
As a preference of the present invention, the air side heat exchanger refrigerant exit is provided with refrigerant temperature sensor and refrigerant filters
Device.
As a preference of the present invention, also including the 3rd check valve, first check valve and the 3rd check valve are in parallel
The unidirectional valve assembly that freezes is formed, the water-side heat refrigerant import is connected with the unidirectional valve assembly of refrigeration, series connection
Refrigerant temperature sensor and refrigerant filter are provided with interface channel.
As a preference of the present invention, the water-side heat water inlet is provided with water load inflow temperature sensor, the water
Side heat exchanger delivery port is provided with water load leaving water temperature sensors.
As a preference of the present invention, the multiple fin is heat absorbing fins, it is uniformly distributed along the air side heat exchanger shell.
Thus, the fin is uniformly distributed along the air side heat exchanger shell, and the fin can be caused to fully absorb
The temperature of environment so that the fin and the environment temperature sensor being arranged on the fin can be more accurately defeated
Go out environment temperature.
The invention has the advantages that：
Compared with prior art, the present invention solves influence of the change for the efficiency of whole system due to environment temperature,
Environment temperature sensor is provided with the fin of air side heat exchanger, by environment temperature sensor output environment temperature value, is passed through
The change of ambient temperature value come automatically adjust and correct expansion valve so that change compressor target suction superheat, ensure enter pressure
The refrigerant of contracting machine is entirely refrigerant steam condition, improves the operating efficiency of whole system.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of dynamic degree of superheat control system of the present invention.
In figure, 1- compressors；101- compressor refrigerant imports；102- compressor refrigerant exits；2- heat regenerators；201- heat
Recover refrigerant import；202- heat regenerator refrigerant exits；203- heat regenerator water inlets；204- heat regenerator delivery ports；
205- hot water inflow temperature sensors；206- hot water effluent's temperature sensors；3- four-way reversing valves；4- air side heat exchangers；401-
Air side heat exchanger refrigerant import；402- air side heat exchanger refrigerant exits；403- fins；5- electric expansion valves；6- reservoirs；601-
Reservoir refrigerant import；602- reservoir refrigerant exits；7- water-side heats；701- water-side heat refrigerant imports；702- water
Side heat exchanger refrigerant exit；703- water-side heat water inlets；704- water-side heat delivery ports；705- water load inflow temperatures
Sensor；706- water load leaving water temperature sensors；8- gas-liquid separators；801- gas-liquid separator refrigerant imports；802- gas-liquids
Separator refrigerant exit；9- exhaust gas temperature sensors；10- high-pressure pressure sensors；11- suction temperature sensors；12- low pressure pressures
Force snesor；13- the first refrigerant filters；14- coil temperature sensors；15- environment temperature sensors；16- the first refrigerant temperature
Spend sensor；The check valves of 17- first；The check valves of 18- second；The check valves of 19- the 3rd；The check valves of 20- the 4th；The refrigerants of 21- second
Temperature sensor；22- the second refrigerant filters；23- heats unidirectional valve assembly；The unidirectional valve assembly of 24- refrigeration.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of dynamic degree of superheat control system of the present invention, including with compressor refrigerant import 101 and
The compressor 1 of compressor refrigerant exit 102, have heat regenerator water inlet 203, heat regenerator delivery port 204, heat regenerator cold
Matchmaker's import 201 and the heat regenerator 2 of heat regenerator refrigerant exit 202, four-way reversing valve 3, there is air side heat exchanger refrigerant import
401 and the air side heat exchanger 4 of air side heat exchanger refrigerant exit 402, electric expansion valve 5, have water-side heat water inlet 703,
The water-side heat of water-side heat delivery port 704, water-side heat refrigerant import 701 and water-side heat refrigerant exit 702
7, gas-liquid separator 8, it is characterised in that：Height is provided with compressor outlet 102 and the interface channel of heat regenerator refrigerant import 201
Pressure pressure sensor 10 and exhaust gas temperature sensor 9, the gas-liquid separator refrigerant exit 802 and compressor refrigerant enter
The interface channel of mouth 101 is provided with low-pressure sensor 12 and suction temperature sensor 11, and the heat regenerator water inlet 203 is set
There is hot water inflow temperature sensor 205, the heat regenerator delivery port 204 is provided with hot water effluent's temperature sensor 206, the wind
Side heat exchanger 4 is provided with coil temperature sensor 14, and the air side heat exchanger 4 comprises at least fin 403, set on the fin 403
There is environment temperature sensor 15, the high-pressure pressure sensor 10 exports higher-pressure region pressure, protects system, and the low pressure passes
Sensor 12 exports low-pressure area pressure, is contrasted with low-voltage variation setting value to be protected to system, the exhaust gas temperature sensor 9
For exporting the delivery temperature of the compressor refrigerant exit 102, discharge superheat is maintained, improves the operating efficiency of system, institute
Suction temperature sensor 11 is stated to export suction temperature, reaches fixed target superheat by adjusting the electric expansion valve
Degree, but because the change of environment temperature can have an impact to the heat exchange efficiency of the air side heat exchanger 6, fixed target superheat
Degree can not meet that unit efficient stable is run, and present invention employs the fin 403, institute are set on the air side heat exchanger 4
State fin 403 and be provided with environment temperature sensor 15, by the output environment temperature of environment temperature sensor 15, repair automatically
The positive goal degree of superheat, when environment temperature reduces, then target superheat degree is reduced accordingly, when environment temperature increase, then accordingly
Increase target superheat degree, ensure the stabilization of the suction superheat of unit, with the change of suction temperature, ensure target superheat degree
Also change therewith, increase the operating efficiency of system.
In the present embodiment, including the reservoir 6, second with reservoir refrigerant import 601 and reservoir refrigerant exit 602
The check valve 20 of check valve 18 and the 4th, the second check valve 18 and in parallel formed of the 4th check valve 20 heat unidirectional valve assembly 23,
The reservoir refrigerant exit 602 is connected with the unidirectional valve assembly 23 of heating, and electronics is provided with the interface channel of series connection
Expansion valve 5, in addition to the check valve 17 of four-way reversing valve 3 and first, the heat regenerator 2 pass through the four-way reversing valve 3 and institute
State air side heat exchanger 4 to connect, the air side heat exchanger 4 is connected by first check valve 17 with the reservoir 6, the storage
Liquid device 6 is connected with the water-side heat 7, and the water-side heat 7 passes through the four-way reversing valve 3 and the gas-liquid separator
8 connections, the gas-liquid separator 8 are connected to form loop with the compressor 1, and the air side heat exchanger refrigerant exit 402 is provided with
First refrigerant temperature sensor 16 and the first refrigerant filter 13, in addition to the 3rd check valve 19, the first check valve 17 and the 3rd
Check valve 19 is in parallel to form the unidirectional valve assembly 24 that freezes, the water-side heat refrigerant import 701 and the refrigeration check valve
Assembly 24 is connected, and the first refrigerant temperature sensor 21 and the first refrigerant filter 22, institute are provided with the interface channel of series connection
State water-side heat water inlet 703 and be provided with water load inflow temperature sensor 705, the water-side heat delivery port 704 is provided with
Water load leaving water temperature sensors 706.
In the present embodiment, the multiple fin 403 is heat absorbing fins, is uniformly distributed along the shell of air side heat exchanger 6, institute
State fin 403 to be uniformly distributed along the shell of air side heat exchanger 6, the fin 403 can be caused to fully absorb the temperature of environment
Degree so that the fin 403 and the environment temperature sensor 15 being arranged on the fin 403 can be more accurately defeated
Go out environment temperature.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the design of the present invention
It is defined with scope.On the premise of design concept of the present invention is not departed from, technical side of the ordinary people in the field to the present invention
The all variations and modifications that case is made, all should drop into protection scope of the present invention, the claimed technology contents of the present invention,
Through all recording in detail in the claims.
Claims (7)
1. a kind of dynamic degree of superheat control system, including with compressor refrigerant import（101）With compressor refrigerant exit（102）
Compressor（1）, there is heat regenerator refrigerant import（201）, heat regenerator water inlet（203）And heat regenerator delivery port
（204）Heat regenerator（2）, there is air side heat exchanger refrigerant exit（402）Air side heat exchanger（4）, there is water-side heat
Refrigerant import（701）, water-side heat water inlet（703）, water-side heat delivery port（704）Water-side heat（7）, have
Gas-liquid separator refrigerant exit（802）Gas-liquid separator（8）, it is characterised in that：The compressor refrigerant exit（102）And institute
State heat regenerator refrigerant import（201）Interface channel at be provided with high-pressure pressure sensor（10）And exhaust gas temperature sensor（9）,
The gas-liquid separator refrigerant exit（802）With the compressor refrigerant import（101）Interface channel provided with low pressure pass
Sensor（12）And suction temperature sensor（11）, the heat regenerator water inlet（203）Provided with hot water inflow temperature sensor
（205）, the heat regenerator delivery port（204）Provided with hot water effluent's temperature sensor（206）, the air side heat exchanger（4）If
There is coil temperature sensor（14）, the air side heat exchanger（4）Including at least fin（403）, the fin（403）It is provided with ring
Border temperature sensor（15）.
2. a kind of dynamic degree of superheat control system according to claim 1, including with reservoir refrigerant import（601）With
Reservoir refrigerant exit（602）Reservoir（6）, the second check valve（18）With the 4th check valve（20）, it is characterised in that：It is described
Second check valve（18）With the 4th check valve（20）Parallel connection, which is formed, heats unidirectional valve assembly（23）, the reservoir refrigerant
Outlet（602）With the unidirectional valve assembly of heating（23）Connect, electric expansion valve is provided with the interface channel of series connection（5）.
A kind of 3. dynamic degree of superheat control system according to claim 1, it is characterised in that：Also include four-way reversing valve
（3）With the first check valve（17）, the heat regenerator（2）Pass through the four-way reversing valve（3）With the air side heat exchanger（4）Even
Connect, the air side heat exchanger（4）Pass through first check valve（17）With the reservoir（6）Connection, the reservoir（6）With
The water-side heat（7）Connection, the water-side heat（7）Pass through the four-way reversing valve（3）With the gas-liquid separator
（8）Connection, the gas-liquid separator（8）With the compressor（1）Connection forms loop.
A kind of 4. dynamic degree of superheat control system according to claim 1, it is characterised in that：The air side heat exchanger refrigerant
Outlet（402）Provided with the first refrigerant temperature sensor（16）With the first refrigerant filter（13）.
A kind of 5. dynamic degree of superheat control system according to claim 1 and 3, it is characterised in that：It is unidirectional also to include the 3rd
Valve（19）, first check valve（17）With the 3rd check valve（19）Parallel connection forms the unidirectional valve assembly that freezes（24）, institute
State water-side heat refrigerant import（701）With the unidirectional valve assembly of refrigeration（24）Connect, set on the interface channel of series connection
There is the second refrigerant temperature sensor（21）With the second refrigerant filter（22）.
A kind of 6. dynamic degree of superheat control system according to claim 1, it is characterised in that：The water-side heat water inlet
Mouthful（703）Provided with water load inflow temperature sensor（705）, the water-side heat delivery port（704）Provided with water load water outlet
Temperature sensor（706）.
A kind of 7. dynamic degree of superheat control system according to claim 1, it is characterised in that：The multiple fin（403）
For heat absorbing fins, along the air side heat exchanger（6）Shell is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154413.5A CN107763888A (en) | 2017-11-20 | 2017-11-20 | A kind of dynamic degree of superheat control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154413.5A CN107763888A (en) | 2017-11-20 | 2017-11-20 | A kind of dynamic degree of superheat control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763888A true CN107763888A (en) | 2018-03-06 |
Family
ID=61278965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711154413.5A Pending CN107763888A (en) | 2017-11-20 | 2017-11-20 | A kind of dynamic degree of superheat control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764577A (en) * | 2018-12-17 | 2019-05-17 | 浙江中广电器股份有限公司 | The control method of hot pump in low temp system and its reversal valve |
| CN113432336A (en) * | 2021-04-26 | 2021-09-24 | 深圳市深蓝电子股份有限公司 | Enhanced vapor injection air source heat pump system and dynamic exhaust superheat degree control method |
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| CN203323448U (en) * | 2013-05-24 | 2013-12-04 | 江苏西格玛电器有限公司 | Coolant multi-branch-circuit total heat recovery air conditioning unit |
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| CN207471839U (en) * | 2017-11-20 | 2018-06-08 | 美意(浙江)空调设备有限公司 | A kind of dynamic degree of superheat control device |
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|---|---|---|---|---|
| CN201885479U (en) * | 2010-12-20 | 2011-06-29 | 天津柯瑞斯空调设备有限公司 | Variable frequency air cooling cold and hot water unit |
| CN201903215U (en) * | 2010-12-28 | 2011-07-20 | 宁波惠康实业有限公司 | Air-conditioner system with entire heat recovery function |
| CN102374714A (en) * | 2011-11-09 | 2012-03-14 | 江苏天舒电器有限公司 | Control method for electronic expansion valve of heat-pump water heater and control device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764577A (en) * | 2018-12-17 | 2019-05-17 | 浙江中广电器股份有限公司 | The control method of hot pump in low temp system and its reversal valve |
| CN113432336A (en) * | 2021-04-26 | 2021-09-24 | 深圳市深蓝电子股份有限公司 | Enhanced vapor injection air source heat pump system and dynamic exhaust superheat degree control method |
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Application publication date: 20180306 |