CN207455798U - A kind of multi-connected machine central air-conditioning - Google Patents
A kind of multi-connected machine central air-conditioning Download PDFInfo
- Publication number
- CN207455798U CN207455798U CN201720862251.XU CN201720862251U CN207455798U CN 207455798 U CN207455798 U CN 207455798U CN 201720862251 U CN201720862251 U CN 201720862251U CN 207455798 U CN207455798 U CN 207455798U
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- China
- Prior art keywords
- heat exchanger
- valve
- indoor unit
- electric expansion
- indoor
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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
Abstract
The utility model discloses a kind of multi-connected machine central air-conditioning; indoor unit including outdoor unit and multiple parallel connections; each indoor unit includes the electric expansion valve and indoor heat exchanger that are respectively communicated with described two interfaces of outdoor unit; electromagnetic switch valve is communicated between the electric expansion valve and the indoor heat exchanger, and the electromagnetic switch valve can prevent high-pressure liquid refrigerant from entering the indoor heat exchanger when the corresponding indoor unit is in refrigeration shutdown status.During refrigerating state, electromagnetic switch valve is opened, the high-pressure liquid refrigerant in outdoor unit is made to get in the indoor heat exchanger of machine, when switching to refrigeration holding state, electromagnetic switch valve is closed, high-pressure liquid refrigerant can be prevented to enter corresponding indoor heat exchanger, therefore when refrigerating state switches to refrigeration holding state, electric expansion valve keeps aperture, quick and complete shut is not required, prolong the service life, while be also possible to prevent mechanical noise and coolant noise that valve body action generates, improve the comfort of user.
Description
Technical field
The utility model is related to field of air conditioning, more particularly to a kind of multi-connected machine central air-conditioning.
Background technology
Multi-connected machine central air-conditioning is widely used in a variety of occasions, including outdoor unit and multiple indoor units, when indoor unit has
When refrigerating state is converted to refrigeration holding state, the electric expansion valve of corresponding indoor unit must also close immediately, in order to make electricity
Sub- expansion valve can be shut completely, and the general amplitude for closing valve events can be more than current aperture in right amount, and this pass valve mode may
Certain damage can be caused to valve body, and then shortens the service life of valve body.Meanwhile electric expansion valve switch valve events can generate centainly
Mechanicalness noise, particularly when valve body aperture is smaller, the flowing of refrigerant can also form howling, and reduce that user uses relaxes
Appropriateness.
Therefore, how to provide a kind of multi-connected machine central air-conditioning that can extend electric expansion valve service life is this field skill
The current technical issues that need to address of art personnel.
Utility model content
The purpose of this utility model is to provide a kind of multi-connected machine central air-conditioning, can extend electric expansion valve service life,
Reduce noise, improve usage comfort.
In order to solve the above technical problems, the utility model provides a kind of multi-connected machine central air-conditioning, including outdoor unit and multiple
Indoor unit in parallel, each indoor unit include the electric expansion valve and the interior that are respectively communicated with described two interfaces of outdoor unit
Heat exchanger is communicated with electromagnetic switch valve, and the electromagnetic switch valve energy between the electric expansion valve and the indoor heat exchanger
It is enough when the corresponding indoor unit is in refrigeration shutdown status high-pressure liquid refrigerant to be prevented to enter the indoor heat exchanger.
Preferably, the electromagnetic switch valve is specially bidirectional electromagnetic valve, when the bidirectional electromagnetic valve obtains electric, only allows high pressure
Liquid refrigerants flows to the indoor unit by the outdoor unit, during the bidirectional electromagnetic valve dead electricity, only allow high-pressure liquid refrigerant by
The indoor unit flows to the outdoor unit.
Preferably, the outdoor unit includes compressor, four-way valve, outdoor heat exchanger and low pressure receiver cylinder, the four-way valve
An interface connect the indoor heat exchanger of each indoor unit simultaneously, the other three interface is respectively communicated with the compression
Machine, the outdoor heat exchanger and the low pressure receiver cylinder, the compressor connect the low pressure receiver cylinder, the outdoor heat exchanger
The electric expansion valve of each indoor unit is also connected simultaneously.
Preferably, it is multiple including the first main pipe rail, the second main pipe rail, multiple first branch pipelines and multiple second branch pipelines
First branch pipeline corresponds to the electric expansion valve of each indoor unit of connection, one end connection of first main pipe rail
The outdoor heat exchanger, the other end connect each first branch pipeline simultaneously, and it is every that multiple second branch pipelines correspond to connection
The indoor heat exchanger of a indoor unit, one end of second main pipe rail connect the four-way valve, and the other end connects simultaneously
Logical each second branch pipeline.
Preferably, it is provided with outdoor electrical expansion valve on first main pipe rail.
Preferably, it is both provided with shut-off valve on first main pipe rail and second main pipe rail.
Multi-connected machine central air-conditioning provided by the utility model, the indoor unit including outdoor unit and multiple parallel connections are each indoor
Machine includes the electric expansion valve and indoor heat exchanger that are respectively communicated with two interfaces of outdoor unit, electric expansion valve and indoor heat exchanger
Between be communicated with electromagnetic switch valve, and electromagnetic switch valve can prevent high pressure when corresponding indoor unit is in refrigeration shutdown status
Liquid refrigerants gets in heat exchanger.
During refrigerating state, electromagnetic switch valve is opened, and changes the interior that the high-pressure liquid refrigerant in outdoor unit gets in machine
Hot device, when switching to refrigeration holding state, electromagnetic switch valve is closed, and high-pressure liquid refrigerant can be prevented to be changed into corresponding interior
Hot device, therefore when refrigerating state switches to refrigeration holding state, electric expansion valve keeps aperture, need not be quick and complete
It shuts, prolongs the service life, while be also possible to prevent mechanical noise and coolant noise that valve body action generates, improve relaxing for user
Adaptive.
Description of the drawings
Fig. 1 is a kind of structure diagram of specific embodiment of multi-connected machine central air-conditioning provided by the utility model.
Specific embodiment
The core of the utility model is to provide a kind of multi-connected machine central air-conditioning, can extend electric expansion valve service life,
Reduce noise, improve usage comfort.
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
It please refers to Fig.1, Fig. 1 is a kind of knot of specific embodiment of multi-connected machine central air-conditioning provided by the utility model
Structure schematic diagram.
The multi-connected machine central air-conditioning that specific embodiment of the present invention provides, the room including outdoor unit 1 and multiple parallel connections
Interior machine 2, during refrigeration, outdoor unit 1 can include what is be sequentially communicated to 2 conveying high-pressure liquid refrigerants of indoor unit, each indoor unit 2
Electromagnetic switch valve 23, electric expansion valve 21 and indoor heat exchanger 22, electric expansion valve 21 and indoor heat exchanger 22 are respectively communicated with room
Outer 1 two interfaces of machine, are communicated with electromagnetic switch valve 23, and electromagnetic switch valve 23 between electric expansion valve 21 and indoor heat exchanger 22
When corresponding indoor unit 2 is in refrigeration shutdown status high-pressure liquid refrigerant can be prevented to get in heat exchanger 22.
During refrigerating state, electromagnetic switch valve 23 is opened, and the high-pressure liquid refrigerant in outdoor unit 1 is made to get in the room of machine 2
Interior heat exchanger 22, when switching to refrigeration holding state, electromagnetic switch valve 23 is closed, and high-pressure liquid refrigerant can be prevented to enter correspondence
Indoor heat exchanger 22, therefore refrigerating state switch to refrigeration holding state when, electric expansion valve 21 keep aperture, no
Need it is quick and complete shut, prolong the service life, at the same be also possible to prevent valve body action generate mechanical noise and coolant noise,
Improve the comfort of user.
Specifically, when electromagnetic switch valve 23 can be bidirectional electromagnetic valve, i.e. refrigerating state, bidirectional electromagnetic valve obtain it is electric, and only
High-pressure liquid refrigerant is allowed to flow to indoor unit 2 by outdoor unit 1, high-pressure liquid refrigerant can get in heat exchanger 22, and be list
, can not countercurrently to flowing, the aperture of electric expansion valve 21 can automatically adjust at this time；During in refrigeration holding state, two-way electricity
Magnet valve dead electricity, high-pressure liquid refrigerant cannot get in heat exchanger 22, and electric expansion valve 21 keeps the aperture far come, high pressure
Liquid refrigerants can be further separated into other indoor units 1 for being still within refrigerating state；During in heating state and heating standby state,
Bidirectional electromagnetic valve dead electricity, and high-pressure liquid refrigerant is only allowed to flow to outdoor unit 1 by indoor unit 2, and be one-way flow, it is irreversible
Stream, the aperture of electric expansion valve 21 can automatically adjust at this time.
In the multi-connected machine central air-conditioning provided in specific embodiment of the present invention, outdoor unit 1 includes compressor 11, four
Port valve 12, outdoor heat exchanger 13 and low pressure receiver cylinder 14, an interface of four-way valve 12 connect the interior of each indoor unit 2 simultaneously
Heat exchanger 22, the other three interface are respectively communicated with compressor 11, outdoor heat exchanger 13 and low pressure receiver cylinder 14, and compressor 11 connects
Low pressure receiver cylinder 14, outdoor heat exchanger 13 also connect the electric expansion valve 21 of each indoor unit 2 simultaneously.The height that compressor 11 is discharged
Gaseous coolant is pressed to be condensed into liquid high pressure refrigerant in outdoor heat exchanger 13 after four-way valve 12, by pipeline flow dividing to each
Indoor unit 2.
For the ease of connection, each component passes through the first main pipe rail, the second main pipe rail, multiple first branch pipelines and multiple second
Branch pipeline, which is realized, to be connected, the electric expansion valve 21 of each indoor unit 2 of multiple first branch pipelines correspondence connections, and the one of the first main pipe rail
End connection outdoor heat exchanger 13, the other end connect each first branch pipeline simultaneously, and multiple second branch pipelines, which correspond to, connects each room
The indoor heat exchanger 22 of interior machine 2, one end connection four-way valve 12 of the second main pipe rail, the other end connect each second and are in charge of simultaneously
Road realizes the parallel connection of multiple indoor units 2 by each pipeline.
Outdoor electrical expansion valve 15 can be also set on the first main pipe rail, to refrigerant in outdoor carry out master control.It is total first
Shut-off valve is both provided on pipeline and the second main pipe rail, realizes the control to complete machine.
Multi-connected machine central air-conditioning provided by the utility model is described in detail above.It is used herein specifically
A example is set forth the principle and embodiment of the utility model, and the explanation of above example is only intended to help to understand this
The method and its core concept of utility model.It should be pointed out that it for those skilled in the art, is not departing from
On the premise of the utility model principle, can also to the utility model, some improvement and modification can also be carried out, these improvement and modification
It falls into the protection domain of the utility model claims.
Claims (6)
1. a kind of multi-connected machine central air-conditioning, the indoor unit (2) including outdoor unit (1) and multiple parallel connections, which is characterized in that Mei Gesuo
Stating indoor unit (2) includes the electric expansion valve (21) and indoor heat exchanger that are respectively communicated with described (1) two interface of outdoor unit
(22), electromagnetic switch valve (23), and the electricity are communicated between the electric expansion valve (21) and the indoor heat exchanger (22)
Magnetic switch valve (23) can prevent high-pressure liquid refrigerant from entering institute when the corresponding indoor unit (2) is in refrigeration shutdown status
State indoor heat exchanger (22).
2. multi-connected machine central air-conditioning according to claim 1, which is characterized in that the electromagnetic switch valve (23) is specially double
To solenoid valve, when the bidirectional electromagnetic valve obtains electric, only high-pressure liquid refrigerant is allowed to flow to the indoor unit by the outdoor unit (1)
(2), during the bidirectional electromagnetic valve dead electricity, only high-pressure liquid refrigerant is allowed to flow to the outdoor unit (1) by the indoor unit (2).
3. multi-connected machine central air-conditioning according to claim 2, which is characterized in that the outdoor unit (1) includes compressor
(11), four-way valve (12), outdoor heat exchanger (13) and low pressure receiver cylinder (14), an interface of the four-way valve (12) connect simultaneously
The indoor heat exchanger (22) of logical each indoor unit (2), the other three interface are respectively communicated with the compressor (11), institute
Outdoor heat exchanger (13) and the low pressure receiver cylinder (14) are stated, the compressor (11) connects the low pressure receiver cylinder (14), institute
It states outdoor heat exchanger (13) also while connects the electric expansion valve (21) of each indoor unit (2).
4. multi-connected machine central air-conditioning according to claim 3, which is characterized in that including the first main pipe rail, the second main pipe rail,
Multiple first branch pipelines and multiple second branch pipelines, multiple first branch pipelines correspond to each indoor unit (2) of connection
The electric expansion valve (21), one end of first main pipe rail connect the outdoor heat exchanger (13), and the other end connects simultaneously
Each first branch pipeline, multiple second branch pipelines correspond to the indoor heat exchange of each indoor unit (2) of connection
Device (22), one end of second main pipe rail connect the four-way valve (12), and the other end connects each described second and is in charge of simultaneously
Road.
5. multi-connected machine central air-conditioning according to claim 4, which is characterized in that be provided with outdoor on first main pipe rail
Electric expansion valve (15).
6. multi-connected machine central air-conditioning according to claim 5, which is characterized in that first main pipe rail and described second is always
Shut-off valve is both provided on pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862251.XU CN207455798U (en) | 2017-07-14 | 2017-07-14 | A kind of multi-connected machine central air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862251.XU CN207455798U (en) | 2017-07-14 | 2017-07-14 | A kind of multi-connected machine central air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207455798U true CN207455798U (en) | 2018-06-05 |
Family
ID=62248259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720862251.XU Active CN207455798U (en) | 2017-07-14 | 2017-07-14 | A kind of multi-connected machine central air-conditioning |
Country Status (1)
| Country | Link |
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| CN (1) | CN207455798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044095A (en) * | 2019-04-15 | 2019-07-23 | 广东美的制冷设备有限公司 | Air-conditioning system and air conditioner |
| CN114110942A (en) * | 2021-11-03 | 2022-03-01 | Tcl空调器(中山)有限公司 | Air conditioning system, multi-split air conditioner, control method of multi-split air conditioner and storage medium |
-
2017
- 2017-07-14 CN CN201720862251.XU patent/CN207455798U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044095A (en) * | 2019-04-15 | 2019-07-23 | 广东美的制冷设备有限公司 | Air-conditioning system and air conditioner |
| CN114110942A (en) * | 2021-11-03 | 2022-03-01 | Tcl空调器(中山)有限公司 | Air conditioning system, multi-split air conditioner, control method of multi-split air conditioner and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510000 No.1 by helongsha villager group, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong Kaili HVAC Co.,Ltd. Address before: 510000 No.1 by helongsha villager group, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG CHIGO HEATING AND VENTILATION EQUIPMENT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |