CN106482242B - Replaced type multi-connected machine outdoor unit and its control method - Google Patents
Replaced type multi-connected machine outdoor unit and its control method Download PDFInfo
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- CN106482242B CN106482242B CN201510548124.8A CN201510548124A CN106482242B CN 106482242 B CN106482242 B CN 106482242B CN 201510548124 A CN201510548124 A CN 201510548124A CN 106482242 B CN106482242 B CN 106482242B
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- pressure
- liquid pipe
- pressure value
- expansion valve
- reading
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/22—Arrangement or mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- 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
- F25B41/31—Expansion valves
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of replaced type multi-gang air-conditioner outdoor unit, including liquid pipe, tracheae and four-way valve, electric expansion valve is provided at the indoor unit in the liquid pipe, it further include high-pressure control device, pressure sensor and pressure switch, the high-pressure control device is parallel on the electric expansion valve, the pressure sensor is set in the liquid pipe, between the electric expansion valve and the indoor unit, and the pressure switch is set on the tracheae, between the four-way valve and the indoor unit.Replaced type multi-connected machine outdoor unit provided by the invention and its control method; by increasing pressure protective device in existing system; guarantee in the case where replacing refrigerant; the loine pressure of existing system is within the scope of compression resistance; and increase active carbon filter; refrigerant, lubricating oil etc. in original system is filtered, system can operate normally after guaranteeing replacement refrigerant.
Description
Technical field
The invention belongs to air-conditioning equipment field more particularly to a kind of replaced type multi-connected machine outdoor unit and its control methods.
Background technique
Nowadays, first generation air-conditioning has been faced with superseded problem, but if old air-conditioning removed, not only results in
The economic loss of user, and stacking of air-conditioning etc. can generate pollution problem to environment after dismounting, therefore, directly to first generation sky
Transferring in row technology innovation is best solution.
Summary of the invention
Therefore, the present invention provide it is a kind of install pressure protective device additional on original air-conditioner outdoor unit, effectively reduce it is economical and
The replaced type multi-connected machine outdoor unit and its control method of environmental problem.
A kind of replaced type multi-gang air-conditioner outdoor unit, including liquid pipe, tracheae and four-way valve, close to the room in the liquid pipe
It is provided with electric expansion valve at interior machine, further includes high-pressure control device, pressure sensor and pressure switch, the high voltage control dress
It sets and is parallel on the electric expansion valve, the pressure sensor is set in the liquid pipe, the electric expansion valve and described
Between indoor unit, the pressure switch is set on the tracheae, between the four-way valve and the indoor unit.
Further include active carbon filter, the active carbon filter is set in the liquid pipe, the pressure sensor and
Between the indoor unit.
The high-pressure control device includes the check valve and solenoid valve being arranged in series, and with the electromagnetic valve outlet close to institute
The mode for stating indoor unit is set to the electric expansion valve both ends.
A kind of control method using above-mentioned replaced type multi-gang air-conditioner outdoor unit, comprising:
System pressure margin value is set, determines that liquid pipe controls pressure value according to the existing resistance to pressure pressure of existing system pipeline；
Set the electronic expansion valve controls aperture；
In refrigeration mode, the reading of the pressure sensor, and the reading and the liquid pipe control are read in real time
Pressing pressure value；
If the reading, which is less than the liquid pipe, controls pressure value, the electric expansion valve and the electromagnetism are fully opened
Valve；
If it is described reading be greater than the liquid pipe control pressure value, reduce the electronic expansion valve opening, compound ratio of laying equal stress on compared with
The reading and the liquid pipe control pressure value.
If being greater than the liquid pipe in the reading controls pressure value, reduce the electronic expansion valve opening, compound ratio of laying equal stress on
After the reading and liquid pipe control pressure value, if the aperture of the electric expansion valve is less than the electronic expansion valve controls
Aperture, and the reading is still greater than liquid pipe control pressure value, then closes the solenoid valve, compound ratio of the laying equal stress on reading and
The liquid pipe controls pressure value.
If the aperture of the electric expansion valve is less than the electronic expansion valve controls aperture, and the reading be still greater than it is described
Liquid pipe controls pressure value, then closes the solenoid valve, after compound ratio of the laying equal stress on reading and liquid pipe control pressure value, if institute
It states reading and is less than liquid pipe control pressure value, then increase the aperture of the electric expansion valve, if the reading is less than the liquid
Pressing pressure value is managed, then reduces the aperture of the electric expansion valve.
A kind of control method using above-mentioned replaced type multi-gang air-conditioner outdoor unit, comprising:
Determine existing pipeline pressure resistance pressure value；
Pressure value at pressure switch described in real-time measurement；
In heating mode, the existing pipeline pressure resistance pressure value and the pressure value；
If the pressure value is greater than the existing pipeline pressure resistance pressure value, the pressure switch controls the outdoor unit and stops
Machine；
If the pressure value is equal to the existing pipeline pressure resistance pressure value, the pressure switch keeps the outdoor unit work
Make state；
If the pressure value is less than the existing pipeline pressure resistance pressure value, the pressure switch is controlling the outdoor unit just
Often work.
Replaced type multi-connected machine outdoor unit provided by the invention and its control method, by increasing pressure in existing system
Protective device guarantees that the loine pressure of existing system increases activity within the scope of compression resistance in the case where replacing refrigerant
Carbon filter is filtered refrigerant, the lubricating oil etc. in original system, and system can operate normally after guaranteeing replacement refrigerant.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of replaced type multi-connected machine outdoor unit provided by the invention；
Specific embodiment
Below by specific embodiment and in conjunction with attached drawing, the present invention will be described in detail.
Replaced type multi-gang air-conditioner outdoor unit as shown in Figure 1, including liquid pipe 1, tracheae 2 and four-way valve 3, the liquid pipe 1
It is upper to be provided with electric expansion valve 11 at the indoor unit, it further include high-pressure control device 12, pressure sensor 13 and pressure
Switch 21, the high-pressure control device 12 are parallel on the electric expansion valve 11, and the pressure sensor 13 is set to
In the liquid pipe 1, between the electric expansion valve 11 and the indoor unit, the pressure switch 21 is set to the tracheae 2
Between the upper, four-way valve 3 and the indoor unit.
It further include active carbon filter 14, the active carbon filter 14 is set in the liquid pipe 1, the pressure sensing
Between device 13 and the indoor unit.
The high-pressure control device 12 includes the check valve and solenoid valve being arranged in series, and close with the electromagnetic valve outlet
The mode of the indoor unit is set to 11 both ends of electric expansion valve.
A kind of control method using above-mentioned replaced type multi-gang air-conditioner outdoor unit, comprising:
System pressure margin value is set, determines that liquid pipe 1 controls pressure value according to the existing resistance to pressure pressure of existing system pipeline；
It sets the electric expansion valve 11 and controls aperture；
In refrigeration mode, the reading of the pressure sensor 13, and the reading and the liquid pipe 1 are read in real time
Control pressure value；
If the reading, which is less than the liquid pipe 1, controls pressure value, the electric expansion valve 11 and the electricity are fully opened
Magnet valve；
If the reading, which is greater than the liquid pipe 1, controls pressure value, reduce 11 aperture of electric expansion valve, compound ratio of laying equal stress on
The reading and the liquid pipe 1 control pressure value.
Wherein system pressure margin value is empirically determined.
The electric expansion valve 11 controls the half that aperture is the normal aperture of the electric expansion valve 11.
If being greater than the liquid pipe 1 in the reading controls pressure value, reduces 11 aperture of electric expansion valve, lay equal stress on
After the compound ratio reading and the liquid pipe 1 control pressure value, if the aperture of the electric expansion valve 11 is swollen less than the electronics
Swollen valve 11 controls aperture, and the reading is still greater than the liquid pipe 1 and controls pressure value, then closes the solenoid valve, compound ratio of laying equal stress on
The reading and the liquid pipe 1 control pressure value.
If the aperture of the electric expansion valve 11, which is less than the electric expansion valve 11, controls aperture, and the reading is still greater than
The liquid pipe 1 controls pressure value, then closes the solenoid valve, and compound ratio of the laying equal stress on reading and the liquid pipe 1 control pressure value
Afterwards, if the reading, which is less than the liquid pipe 1, controls pressure value, increase the aperture of the electric expansion valve 11, if the reading
Pressure value is controlled less than the liquid pipe 1, then reduces the aperture of the electric expansion valve 11.
A kind of control method using above-mentioned replaced type multi-gang air-conditioner outdoor unit, comprising:
Determine existing pipeline pressure resistance pressure value；
Pressure value at pressure switch 21 described in real-time measurement；
In heating mode, the existing pipeline pressure resistance pressure value and the pressure value；
If the pressure value is greater than the existing pipeline pressure resistance pressure value, the pressure switch 21 controls the outdoor unit
It shuts down；
If the pressure value is equal to the existing pipeline pressure resistance pressure value, the pressure switch 21 keeps the outdoor unit
Working condition；
If the pressure value is less than the existing pipeline pressure resistance pressure value, the pressure switch 21 controls the outdoor unit
It works normally.
In heating mode, because the value of pressure sensor Pd when system runs well is respectively less than A, meets former pipeline pressure resistance and want
It asks, in order to guarantee the safety of system, only an action value need to be selected for the pressure switch of A, pressure value described in real-time detection, if institute
Pressure value is stated more than or equal to pressure switch action value, then pressure switch state is to disconnect, system-down.If the pressure value is less than
Pressure switch action value, then pressure switch state is logical, and system operates normally.
Replaced type multi-connected machine outdoor unit provided by the invention and its control method, by increasing pressure in existing system
Protective device guarantees that the loine pressure of existing system increases activity within the scope of compression resistance in the case where replacing refrigerant
Carbon filter 14 is filtered refrigerant, the lubricating oil etc. in original system, and system can operate normally after guaranteeing replacement refrigerant.
Only the preferred embodiments of the present invention have been described above, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of replaced type multi-gang air-conditioner outdoor unit, including liquid pipe, tracheae and four-way valve, close to indoor unit in the liquid pipe
Place is provided with electric expansion valve, it is characterised in that: further includes high-pressure control device, pressure sensor and pressure switch, is configured
In the case where for replacement refrigerant, for the loine pressure of existing system within the scope of compression resistance, the high-pressure control device is parallel to institute
It states on electric expansion valve, the pressure sensor is set in the liquid pipe, between the electric expansion valve and the indoor unit,
The pressure switch is set on the tracheae, between the four-way valve and the indoor unit.
2. replaced type multi-gang air-conditioner outdoor unit according to claim 1, it is characterised in that: further include active carbon filtering
Device, the active carbon filter are set in the liquid pipe, between the pressure sensor and the indoor unit.
3. replaced type multi-gang air-conditioner outdoor unit according to claim 1, it is characterised in that: the high-pressure control device
Including the check valve and solenoid valve being arranged in series, and it is set in such a way that the electromagnetic valve outlet is close to the indoor unit described
Electric expansion valve both ends.
4. a kind of control method using replaced type multi-gang air-conditioner outdoor unit as claimed in claim 3, it is characterised in that: packet
It includes:
System pressure margin value is set, determines that liquid pipe controls pressure value according to the existing resistance to pressure pressure of existing system pipeline；
Set the electronic expansion valve controls aperture；
In refrigeration mode, the reading of the pressure sensor, and the reading and liquid pipe control pressure are read in real time
Force value；
If the reading, which is less than the liquid pipe, controls pressure value, the electric expansion valve and the solenoid valve are fully opened；
If the reading, which is greater than the liquid pipe, controls pressure value, reduce the electronic expansion valve opening, compound ratio of laying equal stress on is relatively described
Reading and the liquid pipe control pressure value.
5. control method according to claim 4, it is characterised in that: if being greater than the liquid pipe in the reading controls pressure
Value, then reduce the electronic expansion valve opening, after compound ratio of the laying equal stress on reading and liquid pipe control pressure value, if the electricity
The aperture of sub- expansion valve is less than the electronic expansion valve controls aperture, and the reading is still greater than the liquid pipe control pressure value,
The solenoid valve is then closed, compound ratio of the laying equal stress on reading and the liquid pipe control pressure value.
6. control method according to claim 5, it is characterised in that: if the aperture of the electric expansion valve is less than the electricity
Sub- expansion valve controls aperture, and the reading is still greater than the liquid pipe control pressure value, then closes the solenoid valve, compound ratio of laying equal stress on
It is more described reading and the liquid pipe control pressure value after, if it is described reading be less than the liquid pipe control pressure value, increase described in
The aperture of electric expansion valve reduces the aperture of the electric expansion valve if the reading, which is less than the liquid pipe, controls pressure value.
7. a kind of control method using the described in any item replaced type multi-gang air-conditioner outdoor units of claims 1 to 33, feature
It is: includes:
Determine existing pipeline pressure resistance pressure value；
Pressure value at real-time measurement exhaust outlet of compressor；
In heating mode, the existing pipeline pressure resistance pressure value and the pressure value；
If the pressure value is greater than the existing pipeline pressure resistance pressure value, the pressure switch controls the outdoor unit and shuts down；
If the pressure value is equal to the existing pipeline pressure resistance pressure value, the pressure switch keeps the outdoor unit work shape
State；
If the pressure value is less than the existing pipeline pressure resistance pressure value, the pressure switch controls the normal work of outdoor unit
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548124.8A CN106482242B (en) | 2015-08-31 | 2015-08-31 | Replaced type multi-connected machine outdoor unit and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548124.8A CN106482242B (en) | 2015-08-31 | 2015-08-31 | Replaced type multi-connected machine outdoor unit and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106482242A CN106482242A (en) | 2017-03-08 |
| CN106482242B true CN106482242B (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510548124.8A Active CN106482242B (en) | 2015-08-31 | 2015-08-31 | Replaced type multi-connected machine outdoor unit and its control method |
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| Country | Link |
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| CN (1) | CN106482242B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107992113A (en) * | 2017-12-19 | 2018-05-04 | 广东美的制冷设备有限公司 | Pressure limiting method, pressure limiting device and temperature control device |
| CN111174336B (en) * | 2020-01-09 | 2024-04-05 | 珠海格力电器股份有限公司 | Air conditioner external unit, air conditioner and air conditioner control method |
| CN114151935A (en) * | 2021-12-07 | 2022-03-08 | 青岛海信日立空调系统有限公司 | Air conditioning system |
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| CN1158399A (en) * | 1995-12-29 | 1997-09-03 | 三洋电机株式会社 | Air conditioner |
| CN1952537A (en) * | 2005-10-17 | 2007-04-25 | 海尔集团公司 | Refrigerant circulation control device and method for multi-connected air conditioner |
| CN2901189Y (en) * | 2006-04-18 | 2007-05-16 | 广东美的电器股份有限公司 | Cold medium regulator for air conditioner |
| JP2009133557A (en) * | 2007-11-30 | 2009-06-18 | Daikin Ind Ltd | Air-conditioning system |
| CN102353116A (en) * | 2011-07-27 | 2012-02-15 | 宁波奥克斯电气有限公司 | Explosion-proof control method of multi-connected air conditioning unit at runtime |
| CN102635926A (en) * | 2012-04-26 | 2012-08-15 | 青岛海尔空调电子有限公司 | Air conditioning system and pressure adjusting method for same |
| CN203687289U (en) * | 2013-12-02 | 2014-07-02 | 国家电网公司 | Computer room air conditioner protection stopping self-diagnosing self-starting device |
-
2015
- 2015-08-31 CN CN201510548124.8A patent/CN106482242B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158399A (en) * | 1995-12-29 | 1997-09-03 | 三洋电机株式会社 | Air conditioner |
| CN1952537A (en) * | 2005-10-17 | 2007-04-25 | 海尔集团公司 | Refrigerant circulation control device and method for multi-connected air conditioner |
| CN2901189Y (en) * | 2006-04-18 | 2007-05-16 | 广东美的电器股份有限公司 | Cold medium regulator for air conditioner |
| JP2009133557A (en) * | 2007-11-30 | 2009-06-18 | Daikin Ind Ltd | Air-conditioning system |
| CN102353116A (en) * | 2011-07-27 | 2012-02-15 | 宁波奥克斯电气有限公司 | Explosion-proof control method of multi-connected air conditioning unit at runtime |
| CN102635926A (en) * | 2012-04-26 | 2012-08-15 | 青岛海尔空调电子有限公司 | Air conditioning system and pressure adjusting method for same |
| CN203687289U (en) * | 2013-12-02 | 2014-07-02 | 国家电网公司 | Computer room air conditioner protection stopping self-diagnosing self-starting device |
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| CN106482242A (en) | 2017-03-08 |
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