CN106403407A - Defrosting control system - Google Patents
Defrosting control system Download PDFInfo
- Publication number
- CN106403407A CN106403407A CN201610848378.6A CN201610848378A CN106403407A CN 106403407 A CN106403407 A CN 106403407A CN 201610848378 A CN201610848378 A CN 201610848378A CN 106403407 A CN106403407 A CN 106403407A
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- China
- Prior art keywords
- valve
- filter
- compressor
- pcb board
- gas
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Classifications
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- 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
- F25B49/022—Compressor control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- 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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a defrosting control system comprising a compressor, a four-way valve communicating with the compressor, a condenser, a first one-way valve, a gas-liquid separator, a second one-way valve, a first filter, an electromagnetic valve, a first threaded coupling, a thermal expansion valve, a second filter, an air cooler, a second threaded coupling, a third one-way valve, a third filter, an electronic expansion valve and a fourth filter. The gas-liquid separator communicates with the four-way valve, and the fourth filter communicates with the condenser. The defrosting control system has the effects of enhancing the protection for the compressor and avoiding a liquid impact phenomenon.
Description
Technical field
The present invention relates to a kind of defrosting control system being applied in icebox.
Background technology
At present, be applied to the refrigeration in icebox and defrosting system, steam defrosting system can when the transformation of ownership is cold compressor
The phenomenon of liquid hammer, in start-up course, easily occurs.Because during defrost, the exchange roles of air-cooler and condenser, with regard to phase
When a then heat pump, only lower than the temperature of heat pump.During defrost, by compressor constantly by High Temperature High Pressure gas
State cold-producing medium is passed through in air-cooler so that air-cooler coil temperature raises, thus melting the frost of coil surface, reaches defrost effect
Really.And gaseous refrigerant is changed into the relatively low liquid refrigerant of temperature and is returned to compressor after the evaporation of condenser, in the transformation of ownership
Liquid refrigerant in cold rear air-cooler than Ku Wengao it is impossible to effectively be evaporated to gaseous state, with compressor constantly air-breathing, greatly
The gas-liquid mixed refrigerant of amount returns to compressor, is likely to result in compressor and throws oil abrasion damage, liquid hazards compressor, to compression
Machine causes irreversible damage, reduces efficiency and even scraps.
Content of the invention
In view of the above problems, it is an object of the invention to provide a kind of strengthen the protection of compressor and avoid liquid hit phenomenon
It is applied to the defrosting control system in icebox.
For achieving the above object, a kind of defrosting control system that the present invention provides, wherein, including compressor and compressor
The first check valve that the condenser that connected with cross valve of cross valve of connection is connected with condenser, respectively with the first check valve and
The first mistake that the second check valve that the gas-liquid separator of compressor connection is connected with gas-liquid separator is connected with the second check valve
The first hickey that the electromagnetic valve that filter is connected with the first filter is connected with electromagnetic valve is connected with the first hickey
Air-cooler that the second filter that heating power expansion valve is connected with heating power expansion valve is connected with the second filter, respectively with air-cooler
The second hickey connecting with cross valve, the 3rd check valve connecting with the second filter and the first hickey respectively and
The electric expansion valve that 3rd filter of the first hickey connection is connected with the 3rd filter is connected with electric expansion valve
4th filter.Gas-liquid separator is connected with cross valve, and the 4th filter is connected with condenser.
When cooling, described compressor is connected with cross valve, and cross valve is connected with condenser, and condenser is unidirectional with first
Valve connects, and the first check valve is connected with gas-liquid separator, and gas-liquid separator is connected with the second check valve, the second check valve and first
Filter connects, and the first filter connected with electromagnetic valve, and electromagnetic valve is passed through with the first hickey, the first hickey and heating power
Expansion valve connects, and heating power expansion valve connected with the second filter, and the second filter is connected with air-cooler, air-cooler and the second screw thread
Orifice, the second hickey is connected with cross valve, and cross valve is connected with gas-liquid separator, and gas-liquid separator is with compressor even
Logical.
When defrost, described compressor is connected with cross valve, and cross valve is connected with the second hickey, and the second screw thread connects
Mouthful connect with air-cooler, air-cooler is connected with the second filter, and the second filter is connected with the 3rd check valve, the 3rd check valve and
First hickey connection, the first hickey is connected with the 3rd filter, and the 3rd filter is connected with electric expansion valve, electronics
Expansion valve is connected with the 4th filter, and the 4th filter is connected with condenser, and condenser is connected with cross valve, cross valve and gas-liquid
Separator connects, and gas-liquid separator is connected with compressor.Above-described electrical equipment control part is all connected with pcb board；More than
Described job step is by pcb board programme-control.
In some embodiments, connect between one end and described compressor and cross valve, the other end is with condenser even
Logical low-voltage compensation valve.The first-hand valve that low-voltage compensation valve side is provided with.
In some embodiments, low-voltage compensation valve is connected with pcb board.
In some embodiments, compressor is provided with low pressure controller.
In some embodiments, during defrost, compressor low voltage value is detected by low pressure controller；When compressor is low
When pressure value is less than 0.5kg, provide signal to pcb board, pcb board controls opens low-voltage compensation valve, is adjusted steam by handss valve 2
Magnitude of recruitment in the middle part of condenser, 0.5kg is not less than with the low voltage value ensureing compressor；When compressor low voltage value is more than 1kg,
Low pressure controller provides signal to pcb board, and pcb board controls closes low-voltage compensation valve.
In some embodiments, the liquid spray valve connecting with gas-liquid separator two ends respectively.
In some embodiments, liquid spray valve side is provided with second-hand's valve and capillary tube.
In some embodiments, liquid spray valve is connected with pcb board.
In some embodiments, compressor is provided with the sensor of delivery temperature；When sensor sensing delivery temperature
When value is higher than setting value, provide signal to pcb board, pcb board controls liquid spray valve to open, arrives hair after the Flow-rate adjustment through receiving and distributing valve 1
Tubule throttling enters gas-liquid separator to reduce suction temperature, is in normal range with the temperature and electric current ensureing compressor electric motor
Interior, such delivery temperature will reduce, and after near set temperature value, pcb board controls liquid spray valve to close.
The invention has the beneficial effects as follows having the protection strengthening compressor and the effect avoiding liquid hit phenomenon.Due to defrost control
System mode processed is to be controlled using pcb board program, comprises refrigeration mode and the defrost pattern of routine.Three are had in defrost pattern
Plant available：When storehouse temperature carries out defrost higher than 10 degree, pcb board controls entrance wind defrost pattern to a；B is less than in ambient temperature
When 10 degree, pcb board controls the electric defrost pattern of entrance；When storehouse temperature is less than 10 degree and ambient temperature is higher than 10 degree, pcb board controls c
Enter steam defrost pattern.Wherein, steam defrost is the mode of the most economical energy-conservation of three kinds of defrost modes, several to Ku Wen and goods
Do not affect.But during steam defrost, easily low pressure too low (less than 0.5kg) and can bring to compressor in system
Irreversible damage, decreases compressor service life.Therefore, low-voltage compensation valve, during defrost, is examined by low pressure controller
Measured compressed machine low voltage value, provides signal to pcb board, is controlled by pcb board and open low-voltage compensation valve, by handss valve 2 during less than 0.5kg
The magnitude of recruitment being adjusted steam, in the middle part of condenser, is not less than 0.5kg with the low voltage value ensureing compressor；When low voltage value exceedes
During 1kg, signal is provided to pcb board by low pressure controller, is controlled by pcb board and close low-voltage compensation valve.So to ensure compressor
Low voltage value be not less than 0.5kg it is ensured that compressor runs in normally-pressured neighbor.In addition, when the freezer amount of stocking up load is larger
Or ambient temperature is too high when causing condensation effect difference refrigerating efficiency low, and suction superheat can be caused big.Compressor as
The increase of load and power increase, thus current of electric increases and causes overheated, are now accomplished by being lowered the temperature with air-breathing, due to air-breathing
The high cooling-down effect of temperature is bad, will cause overheat of compressor and stoppage protection, so that storehouse temperature rise, causes client cargo to damage
Bad.Therefore can solve, using the method reducing compressor load, the protection causing because overheated, that is, increased liquid spray valve section
Cool down compressor electric motor after stream, relatively reduce air-cooler liquid supply rate in storehouse, suitable increase temperature fall time it is ensured that compressor not
Overload protection, normal for a long time runs it is ensured that Ku Wen and cargo mass.Because the increase delivery temperature of suction superheat also can be corresponding
Raise, we pass through temperature sensor senses compressor exhaust temperature, provide signal when temperature value is higher than setting value to PCB
Plate, controls liquid spray valve to open by pcb board, enters gas-liquid separator to drop to capillary-compensated after the Flow-rate adjustment through receiving and distributing valve 1
Low suction temperature, is in normal range with the temperature and electric current ensureing compressor electric motor, such delivery temperature will reduce, will
To set temperature value, pcb board controls liquid spray valve to close.Achieve the effect strengthening compressor protection.Due also to adopt four
Port valve controls, during dripping after steam defrost, cross valve be in open mode in order to by gas-liquid separator with
Condenser turns on, and so that the liquid refrigerant in gas-liquid separator is absorbed heat and evaporates, raises pressure inside the tank；Cold wind
High-temperature high-pressure refrigerant in machine, by the condensation of storehouse temperature, is condensed into liquid refrigerant, terminates the transformation of ownership in the time of dripping cold
After process, pcb board controls cross valve to close, and now gas-liquid separator and air-cooler turn on, and are made with condensation by the evaporation of early stage
With greatly reducing air-cooler mesohigh cold-producing medium and a large amount of gas-liquids of the percussion formation of cold-producing medium in gas-liquid separator being mixed
Close cold-producing medium, also avoid liquid hammer during compressor start, increased the protection to compressor.Therefore, not only avoid
The phenomenon of liquid hammer, and increase the protection of compressor further.
Brief description
Fig. 1 is the process principle figure of the present invention；
Fig. 2 is the circuit diagram of pcb board in the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings invention is described in further detail.
As shown in Figure 1-2, a kind of defrosting control system, the cross valve 02 connecting with compressor 01 including compressor 01 and
Cross valve 02 connection condenser 03 connect with condenser 03 the first check valve 04, respectively with the first check valve 04 and compress
The second check valve 06 that the gas-liquid separator 05 of machine 01 connection is connected with gas-liquid separator 05 is connected with the second check valve 06
The first hickey 09 and that the electromagnetic valve 08 that first filter 07 is connected with the first filter 07 is connected with electromagnetic valve 08
The second filter 011 and the second filtration that the heating power expansion valve 010 of one hickey 09 connection is connected with heating power expansion valve 010
The air-cooler 012 of device 011 connection, the second hickey 013 connecting with air-cooler 012 and cross valve 02 respectively, respectively with the
The 3rd filtration that the 3rd check valve 014 that tow filtrator 011 connects with the first hickey 09 is connected with the first hickey 09
The 4th filter 017 that the electric expansion valve 016 that device 015 is connected with the 3rd filter 015 is connected with electric expansion valve 016.
Gas-liquid separator 05 is connected with cross valve 02, and the 4th filter 017 is connected with condenser 03.When cooling, described compressor
01 is connected with cross valve 02, and cross valve 02 is connected with condenser 03, and condenser 03 is connected with the first check valve 04, the first check valve
04 is connected with gas-liquid separator 05, and gas-liquid separator 05 is connected with the second check valve 06, the second check valve 06 and the first filter
07 connection, the first filter 07 is connected with electromagnetic valve 08, and electromagnetic valve 08 is passed through with the first hickey 09, the first hickey 09
Connect with heating power expansion valve 010, heating power expansion valve 010 is connected with the second filter 011, the second filter 011 and air-cooler 012
Connection, air-cooler 012 connects with the second hickey 013, and the second hickey 013 is connected with cross valve 02, cross valve 02 and
Gas-liquid separator 05 connects, and gas-liquid separator 05 is connected with compressor 01.When defrost, described compressor 01 and cross valve 02
Connection, cross valve 02 connects with the second hickey 013, and the second hickey 013 is connected with air-cooler 012, air-cooler 012 and
Second filter 011 connects, and the second filter 011 is connected with the 3rd check valve 014, and the 3rd check valve 014 and the first screw thread connect
Mouth 09 connection, the first hickey 09 is connected with the 3rd filter 015, and the 3rd filter 015 is connected with electric expansion valve 016,
Electric expansion valve 016 is connected with the 4th filter 017, and the 4th filter 017 is connected with condenser 03, condenser 03 and cross valve
02 connection, cross valve 02 is connected with gas-liquid separator 05, and gas-liquid separator 05 is connected with compressor 01.Electrical equipment control part all with
Pcb board is connected, and the above job step is by pcb board programme-control.Connect between one end and compressor 01 and cross valve 02
Logical, the low-voltage compensation valve 019 that the other end is connected with condenser 03.The first-hand valve 020 that low-voltage compensation valve 019 side is provided with.
Low-voltage compensation valve 019 is connected with pcb board.It is provided with low pressure controller on compressor 01.During defrost, by low pressure controller
Detection compressor 01 low voltage value；When compressor 01 low voltage value is less than 0.5kg, provide signal to pcb board, pcb board controls to be opened
Low-voltage compensation valve 019, is adjusted the magnitude of recruitment of steam in the middle part of condenser 03 by handss valve 2, to ensure the low of compressor 01
Pressure value is not less than 0.5kg；When compressor 01 low voltage value is more than 1kg, low pressure controller provides signal to pcb board, and pcb board controls
Close low-voltage compensation valve 019.The liquid spray valve 018 connecting with gas-liquid separator 05 two ends respectively.Liquid spray valve 018 side is provided with the
Second-hand valve 122 and capillary tube 222.Liquid spray valve 018 is connected with pcb board.The sensor of delivery temperature is provided with compressor 01；When
When sensor sensing outlet air temperature is higher than setting value, provide signal to pcb board, pcb board controls liquid spray valve 018 to open, passes through
Throttle to capillary tube 222 after the Flow-rate adjustment of handss valve 1 and enter gas-liquid separator 05 to reduce suction temperature, to ensure compressor 01
The temperature of motor and electric current were in normal range, and such delivery temperature will reduce, after near set temperature value, pcb board control
Liquid spray valve 018 processed cuts out.
Defrosting control system mode is to be controlled using pcb board program, comprises refrigeration mode and the defrost pattern of routine.
Have in defrost pattern three kinds available：When storehouse temperature carries out defrost higher than 10 degree, pcb board controls entrance wind defrost pattern to a；b
When ambient temperature is less than 10 degree, pcb board controls the electric defrost pattern of entrance；C works as storehouse temperature less than 10 degree and ambient temperature is higher than 10
When spending, pcb board controls entrance steam defrost pattern.Wherein, steam defrost is the sides that three kinds of defrost modes are most economical energy-conservation
Formula, has little to no effect to Ku Wen and goods.But during steam defrost, system easily occurs that low pressure is too low (to be less than
0.5kg) irreversible damage can be brought to compressor 01, decrease compressor 01 service life.Therefore, low-voltage compensation valve 019
During defrost, compressor 01 low voltage value is detected by low pressure controller, provides signal during less than 0.5kg to pcb board, by PCB
Plate controls opens low-voltage compensation valve 019, is adjusted the magnitude of recruitment of steam in the middle part of condenser 03 by handss valve 2, to ensure to press
The low voltage value of contracting machine 01 is not less than 0.5kg；When low voltage value is more than 1kg, signal is provided to pcb board by low pressure controller, by PCB
Plate controls closes low-voltage compensation valve 019.So 0.5kg is not less than it is ensured that compressor 01 exists with the low voltage value ensureing compressor 01
Run in normally-pressured neighbor.In addition, causing condensation effect difference system when the freezer amount of stocking up load is larger or ambient temperature is too high
When cold efficiency is low, suction superheat can be caused big.Compressor 01 is as the increase of load and power increase, thus motor is electric
It is overheated that stream increase causes, and is now accomplished by being lowered the temperature with air-breathing, because the high cooling-down effect of suction temperature is bad, will cause compression
Machine 01 is overheated and stoppage protection, so that storehouse temperature rise, causes client cargo to damage.Therefore can be using minimizing compressor 01 load
Method solving the protection causing because overheated, that is, cool down compressor 01 motor after increased liquid spray valve 018 throttling, relatively subtract
Air-cooler liquid supply rate in few storehouse, suitable increases temperature fall time it is ensured that the protection of compressor 01 nonoverload, normally runs for a long time,
Ensure storehouse temperature and cargo mass.Because the increase delivery temperature of suction superheat also can accordingly raise, we pass through temperature sensing
Device senses compressor 01 delivery temperature, provides signal when temperature value is higher than setting value to pcb board, controls liquid spray valve by pcb board
018 opens, and throttles to capillary tube 222 and enter gas-liquid separator 05 to reduce suction temperature after the Flow-rate adjustment through receiving and distributing valve 1, with
Ensure that the temperature of compressor 01 motor and electric current were in normal range, such delivery temperature will reduce, near design temperature
After value, pcb board controls liquid spray valve 018 to close.Achieve the effect strengthening compressor 01 protection.Due also to the cross valve 02 adopting
Control, during dripping after steam defrost, cross valve 02 be in open mode in order to by gas-liquid separator 05 with
Condenser 03 turns on, and so that the liquid refrigerant in gas-liquid separator 05 is absorbed heat and evaporates, raises pressure inside the tank；
High-temperature high-pressure refrigerant in air-cooler 012, by the condensation of storehouse temperature, is condensed into liquid refrigerant, terminates in the time of dripping
After turning process of refrigerastion, pcb board controls cross valve 02 to close, and now gas-liquid separator 05 and air-cooler 012 turn on, by early stage
Evaporation and condensation, greatly reduce air-cooler 012 mesohigh cold-producing medium and the impact of cold-producing medium in gas-liquid separator 05 are made
With a large amount of gas-liquid mixed refrigerants being formed, also avoid liquid hammer in compressor 01 start-up course, increased to compressor
01 protection.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, some deformation can also be made and improve, these broadly fall into the protection domain of invention.
Claims (9)
1. a kind of defrosting control system is it is characterised in that include cross valve and the cross valve company that compressor is connected with compressor
The first check valve that logical condenser is connected with condenser, the gas-liquid separator connecting with the first check valve and compressor respectively,
The first filter that the second check valve being connected with gas-liquid separator is connected with the second check valve is connected with the first filter
Heating power expansion valve and heating power expansion valve that the first hickey that electromagnetic valve is connected with electromagnetic valve is connected with the first hickey
The second filter air-cooler connecting with the second filter of connection, the second screw thread connecting with air-cooler and cross valve respectively
Interface, the 3rd check valve connecting with the second filter and the first hickey respectively connect with the first hickey the 3rd
The 4th filter that the electric expansion valve that filter is connected with the 3rd filter is connected with electric expansion valve；
Described gas-liquid separator is connected with cross valve；
The 4th described filter is connected with condenser；
When cooling, described compressor is connected with cross valve, and cross valve is connected with condenser, and condenser and the first check valve are even
Logical, the first check valve is connected with gas-liquid separator, and gas-liquid separator is connected with the second check valve, and the second check valve and first filters
Device connects, and the first filter connected with electromagnetic valve, and electromagnetic valve is passed through with the first hickey, the first hickey and thermal expansion
Valve connects, and heating power expansion valve connected with the second filter, and the second filter is connected with air-cooler, air-cooler and the second hickey
Connection, the second hickey is connected with cross valve, and cross valve is connected with gas-liquid separator, and gas-liquid separator is connected with compressor；
When defrost, described compressor is connected with cross valve, and cross valve is connected with the second hickey, the second hickey with
Air-cooler connects, and air-cooler is connected with the second filter, and the second filter is connected with the 3rd check valve, the 3rd check valve and first
Hickey connects, and the first hickey is connected with the 3rd filter, and the 3rd filter is connected with electric expansion valve, electronic expansion
Valve is connected with the 4th filter, and the 4th filter is connected with condenser, and condenser is connected with cross valve, cross valve and gas-liquid separation
Device connects, and gas-liquid separator is connected with compressor；
Above-described electrical equipment control part is all connected with pcb board；
The above job step is by pcb board programme-control.
2. a kind of defrosting control system according to claim 1 is it is characterised in that one end and described compressor and four-way
Connect between valve, the low-voltage compensation valve that the other end is connected with condenser；It is first-hand that described low-voltage compensation valve side is provided with
Valve.
3. a kind of defrosting control system according to claim 2 is it is characterised in that described low-voltage compensation valve and pcb board
Connect.
4. a kind of defrosting control system according to claim 3 is it is characterised in that be provided with low pressure on described compressor
Controller.
5. a kind of defrosting control system according to claim 2,3 or 4 is it is characterised in that during defrost, by low pressure
Controller detects compressor low voltage value；When compressor low voltage value is less than 0.5kg, provide signal to pcb board, pcb board controls to be beaten
Drive low-voltage compensation valve, the magnitude of recruitment of steam be adjusted in the middle part of condenser by handss valve 2, with ensure compressor low voltage value not
Less than 0.5kg；When compressor low voltage value is more than 1kg, low pressure controller provides signal to pcb board, and pcb board controls closes low pressure
Recuperation valve.
6. a kind of defrosting control system according to claim 1 is it is characterised in that connect with gas-liquid separator two ends respectively
Liquid spray valve.
7. a kind of defrosting control system according to claim 4 is it is characterised in that described liquid spray valve side is provided with the
Second-hand valve and capillary tube.
8. a kind of defrosting control system according to claim 7 is it is characterised in that described liquid spray valve is connected with pcb board.
9. a kind of defrosting control system according to claim 6,7 or 8 is it is characterised in that arrange on described compressor
There is the sensor of delivery temperature；When sensor sensing outlet air temperature is higher than setting value, provide signal to pcb board, pcb board control
Liquid spray valve processed is opened, and enters gas-liquid separator to reduce suction temperature to capillary-compensated after the Flow-rate adjustment through receiving and distributing valve 1, with
Ensure that the temperature of compressor electric motor and electric current were in normal range, such delivery temperature will reduce, near set temperature value
Afterwards, pcb board controls liquid spray valve to close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848378.6A CN106403407A (en) | 2016-09-23 | 2016-09-23 | Defrosting control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848378.6A CN106403407A (en) | 2016-09-23 | 2016-09-23 | Defrosting control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403407A true CN106403407A (en) | 2017-02-15 |
Family
ID=57998307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610848378.6A Pending CN106403407A (en) | 2016-09-23 | 2016-09-23 | Defrosting control system |
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| CN (1) | CN106403407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662816A (en) * | 2018-06-11 | 2018-10-16 | 珠海格力电器股份有限公司 | Air conditioner oil return system and air conditioner |
| CN109869954A (en) * | 2017-12-05 | 2019-06-11 | 青岛经济技术开发区海尔热水器有限公司 | Air source heat pump water heater and defrosting method thereof |
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| CN108662816B (en) * | 2018-06-11 | 2023-10-13 | 珠海格力电器股份有限公司 | Air conditioner oil return system and air conditioner |
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