CN203550042U - Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine - Google Patents
Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine Download PDFInfo
- Publication number
- CN203550042U CN203550042U CN201320614610.1U CN201320614610U CN203550042U CN 203550042 U CN203550042 U CN 203550042U CN 201320614610 U CN201320614610 U CN 201320614610U CN 203550042 U CN203550042 U CN 203550042U
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- Prior art keywords
- return pipe
- outdoor unit
- oil return
- gas
- outdoor machine
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- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000004378 air conditioning Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 65
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000010729 system oil Substances 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses a multi-split system, a multi-split system outdoor machine and an outdoor machine unit of the multi-split system outdoor machine. The outdoor machine unit is used in the multi-split system outdoor machine and comprises a compressor (1) and a gas-liquid separator (11), wherein the gas-liquid separator (11) comprises an oil return pipe and a gas outlet pipe which is connected with a system gas return pipe of the outdoor machine unit, an output end of the oil return pipe is communicated with the system gas return pipe, and an electronic expansion valve (12) is arranged on a connecting pipeline between the oil return pipe and the system gas return pipe. According to the outdoor machine unit provided by the utility model, the oil return amount from the oil return pipe to the system gas return pipe can be controlled by controlling the opening degree of the electronic expansion valve, and thus the purpose of regulating the system oil return amount can be achieved; meanwhile, due to the action of the electronic expansion valve, the gas return superheat degree is increased, and the system running safety is greatly increased.
Description
Technical Field
The utility model relates to a refrigeration plant technical field, in particular to many online systems, many online system off-premises station and off-premises station unit thereof.
Background
The multi-split air conditioner is commonly called as "one-to-many", and means that one outdoor unit is connected with a plurality of indoor units through pipes. The multi-split system has the advantages of energy conservation, comfort, stable operation and the like, and each room can be independently adjusted, so that the requirements of different air conditioner loads in different rooms can be met. The building block is increasingly widely applied to small and medium-sized buildings and part of public buildings.
At present, in a multi-split air-conditioning system on the market, oil separated from a gas-liquid separator directly enters a system muffler communicated with an air outlet pipe of the gas-liquid separator, and directly enters a compressor along with a gaseous refrigerant. However, the degree of demand for the amount of oil return differs depending on factors such as a change in the output of the compressor, a start-stop operation of the compressor, or a change in the ambient temperature. Because the oil directly flows back into the compressor, the oil quantity of an oil pool in the compressor can not be effectively regulated; and the oil flows out from the bottom close to the liquid refrigerant in the gas-liquid separator, so that the oil temperature is lower, the superheat degree of the system is insufficient, even the liquid refrigerant exists in a return pipe of the system, and the operation safety of the system is lower.
Therefore, how to facilitate the adjustment of the oil return amount and improve the operation safety of the system is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an outdoor unit to return oil volume and adjust, improve system operation security. The utility model also provides a many online systems and many online system off-premises stations.
In order to achieve the above object, the utility model provides a following technical scheme:
an outdoor unit used in the outdoor unit of multi-split air conditioning system comprises a compressor and a gas-liquid separator,
the gas-liquid separator comprises an oil return pipe and an air outlet pipe connected with a system air return pipe of the outdoor unit, and the output end of the oil return pipe is communicated with the system air return pipe; and an electronic expansion valve is arranged on a connecting pipeline between the oil return pipe and the system air return pipe.
Preferably, in the outdoor unit, the air outlet pipe of the gas-liquid separator is a straight pipe, an oil return hole is formed in a casing of the gas-liquid separator, and the oil return pipe is communicated with the oil return hole.
Preferably, in the outdoor unit, the air outlet pipe is disposed at a top of a side wall of the casing.
Preferably, in the outdoor unit, the oil return pipe is disposed with an opening communicated with the electronic expansion valve facing upward.
Preferably, in the outdoor unit, the oil return pipe is provided at a bottom of a side wall of the gas-liquid separator.
Preferably, in the outdoor unit, the oil return pipe and the air outlet pipe are both copper pipes.
Preferably, in the outdoor unit, the casing is a cylindrical casing.
Preferably, the outdoor unit further includes a waste oil discharge valve communicated with the oil return pipe.
The utility model also provides a many online system off-premises stations, including a plurality of off-premises station units, the off-premises station unit is as above-mentioned arbitrary outdoor unit.
The utility model also provides a many online systems, including many online system off-premises stations, its characterized in that, many online system off-premises stations be as above many online system off-premises stations.
According to the technical scheme, the outdoor unit provided by the utility model is communicated with the system air return pipe through the output end of the oil return pipe; an electronic expansion valve is arranged on a connecting pipeline between the oil return pipe and the system air return pipe, so that oil in the gas-liquid separator reaches the electronic expansion valve through the oil return pipe, then reaches the system air return pipe through the electronic expansion valve, and flows back into the compressor. The utility model provides an outdoor unit, through the aperture of control electronic expansion valve, the oil return volume of control oil return pipe to system's muffler, and then reach the effect of governing system oil return volume to, through electronic expansion valve's effect, improved return air superheat degree, improved system operation security widely.
The utility model also provides a many online system off-premises stations of having above-mentioned off-premises station unit and many online systems. Since the outdoor unit has the technical effects, the outdoor unit of the multi-split system and the multi-split system having the outdoor unit also have the same technical effects, and a description thereof is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an outdoor unit according to an embodiment of the present invention.
Wherein,
the system comprises a compressor-1, an oil separator-2, a four-way valve-3, a condenser-4, a throttling electromagnetic valve-5, a throttling electronic expansion valve-6, a high-pressure valve-7, a low-pressure valve-8, an oil balance valve-9, a first electromagnetic valve-10, a gas-liquid separator-11, an electronic expansion valve-12, a second electromagnetic valve-13 and a third electromagnetic valve-14.
Detailed Description
The utility model discloses an outdoor unit to return oil volume and adjust, improve system operation security. The utility model also provides a many online systems and many online system off-premises stations.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an outdoor unit according to an embodiment of the present invention.
The embodiment of the utility model provides an outdoor unit for in many on line system off-premises station, including compressor 1 and vapour and liquid separator 11, vapour and liquid separator 11 includes return oil pipe and the outlet duct of being connected with the system muffler of outdoor unit, and return oil pipe's output and system muffler communicate; an electronic expansion valve 12 is arranged on a connecting pipeline between the oil return pipe and a system air return pipe.
The embodiment of the utility model provides an outdoor unit, through communicating the output of returning oil pipe with the system muffler; an electronic expansion valve 12 is arranged on a connecting pipeline between the oil return pipe and the system air return pipe, so that oil in the gas-liquid separator 12 reaches the electronic expansion valve 12 through the oil return pipe, then reaches the system air return pipe through the electronic expansion valve 12, and flows back into the compressor. The embodiment of the utility model provides an outdoor unit, through the aperture of control electronic expansion valve 12, the control returns oil pipe to the oil return volume of system muffler, and then reaches the effect that the governing system returned oil volume to, through electronic expansion valve 12's effect, properly adjust the return air superheat degree, improved system operation security widely.
The embodiment of the utility model provides an among the outdoor unit, vapour and liquid separator 11's outlet duct is the straight tube, is provided with the oil gallery on vapour and liquid separator 11's the casing, oil gallery and oil gallery intercommunication. The oil return hole is directly arranged on the shell, so that the oil return flow is shortened, and the accumulation of oil is facilitated; and, through setting up the outlet duct into the straight tube, effectively avoided the required mounting when fixed U type outlet duct in to the casing, saved material cost and manufacturing cost.
In this embodiment, the outlet duct is disposed at the top of the side wall of the housing. The air outlet pipe is arranged at the top of the side wall of the shell, so that the output end of the oil return pipe is more conveniently communicated with the system air return pipe; and because the air inlet of the air outlet pipe is arranged at the top of the shell, the condition that the gaseous refrigerant is cooled due to the low-temperature liquid refrigerant when passing through the bottom of the shell is avoided, the reduction of the superheat degree of the returned air is avoided, and the running reliability of the system is further improved.
The opening of the oil return pipe for communicating with the electronic expansion valve 12 is arranged upwards, so that the output end of the oil return pipe is further convenient to communicate with a system air return pipe.
Note that the upward direction is set to a direction toward the top thereof in a normal operation state of the gas-liquid separator 12.
In order to simplify the structure of the oil return pipe, the oil return pipe is provided at the bottom of the side wall of the gas-liquid separator 12. That is, only an L-shaped oil return pipe or a straight pipe may be provided.
Preferably, the oil return pipe and the air outlet straight pipe are both copper pipes, and the shell is a cylindrical shell.
The embodiment of the utility model provides an among the outdoor unit, still include with the waste oil discharge valve that returns oil pipe intercommunication. When the oil in the gas-liquid separator is deteriorated or impurities are excessive, the waste oil in the gas-liquid separator is directly discharged through the waste oil discharge valve, and the cleaning efficiency and the operation cost of the system are greatly improved.
The embodiment of the utility model provides a multi-connected system off-premises station is still provided, including a plurality of off-premises station units, wherein, the off-premises station unit is as above-mentioned any kind of off-premises station unit. Since the outdoor unit has the above technical effects, the outdoor unit of the multi-split air conditioning system having the outdoor unit also has the same technical effects, and therefore, the technical effects are not described one by one.
As shown in fig. 1, the outdoor unit includes a compressor 1, an oil separator 2, a four-way valve 3, a condenser 4, a throttle solenoid valve 5, a throttle electronic expansion valve 6, a high pressure valve 7, a low pressure valve 8, an oil balance valve 9, a first solenoid valve 10, a gas-liquid separator 11, an electronic expansion valve 12, a second solenoid valve 13, and a third solenoid valve 14. The outdoor units are connected through a high-pressure valve 7, a low-pressure valve 8 and an oil balance valve 9 to form the outdoor unit of the multi-split air conditioning system.
The utility model also provides a many online systems, including many online system off-premises stations, many online system off-premises stations are connected with a plurality of indoor sets, have formed many online systems. The multi-online system outdoor unit is the multi-online system outdoor unit in the above embodiment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An outdoor unit used in an outdoor unit of a multi-split air conditioning system comprises a compressor (1) and a gas-liquid separator (11),
the gas-liquid separator (11) comprises an oil return pipe and an air outlet pipe connected with a system air return pipe of the outdoor unit, and the output end of the oil return pipe is communicated with the system air return pipe; and an electronic expansion valve (12) is arranged on a connecting pipeline between the oil return pipe and the system air return pipe.
2. The outdoor unit of claim 1, wherein the outlet pipe of the gas-liquid separator (11) is a straight pipe, and the casing of the gas-liquid separator (11) is provided with an oil return hole, and the oil return pipe is communicated with the oil return hole.
3. The outdoor unit of claim 2, wherein the outlet duct is provided at a top of a side wall of the casing.
4. An outdoor unit according to claim 3, wherein said oil return pipe is disposed with its opening for communication with said electronic expansion valve (12) facing upward.
5. The outdoor unit of claim 4, wherein the oil return pipe is provided at the bottom of the side wall of the gas-liquid separator (12).
6. The outdoor unit of claim 1, wherein the oil return pipe and the air outlet pipe are both copper pipes.
7. The outdoor unit of claim 1, wherein the casing is a cylindrical casing.
8. The outdoor unit of any one of claims 1 to 7, further comprising a waste oil discharge valve communicated with the oil return pipe.
9. An outdoor unit of a multi-split system comprising a plurality of outdoor unit units, wherein the outdoor unit is the outdoor unit according to any one of claims 1 to 8.
10. A multi-split system comprising outdoor units of the multi-split system, wherein the outdoor units of the multi-split system are the outdoor units of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614610.1U CN203550042U (en) | 2013-09-30 | 2013-09-30 | Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614610.1U CN203550042U (en) | 2013-09-30 | 2013-09-30 | Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203550042U true CN203550042U (en) | 2014-04-16 |
Family
ID=50468152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614610.1U Expired - Lifetime CN203550042U (en) | 2013-09-30 | 2013-09-30 | Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203550042U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236171A (en) * | 2014-09-30 | 2014-12-24 | 广东志高暖通设备股份有限公司 | VRF air conditioning system, oil balancing device of VRF air conditioning system and control method of VRF air conditioning system |
| CN104315756A (en) * | 2014-09-30 | 2015-01-28 | 广东志高暖通设备股份有限公司 | VRV (variable refrigerant volume) air conditioning system and oil balance device and control method thereof |
| CN104457031A (en) * | 2014-09-30 | 2015-03-25 | 广东志高暖通设备股份有限公司 | Multi-split air conditioning system and oil balancing devices and control method of multi-split air conditioning system |
| CN105352064A (en) * | 2014-08-19 | 2016-02-24 | 广东美的暖通设备有限公司 | Outdoor unit, multi-connected outdoor unit system, multi-connected air-conditioning unit and oil uniformization control method of multi-connected air-conditioning unit |
| CN105371530A (en) * | 2014-08-19 | 2016-03-02 | 广东美的暖通设备有限公司 | Outdoor units, outdoor unit system, multi-connected air conditioning unit and oil uniformizing control method for multi-connected air conditioning unit |
| CN105444477A (en) * | 2014-08-19 | 2016-03-30 | 广东美的暖通设备有限公司 | Outdoor unit, outdoor unit system, multi-connected air-conditioner unit and oil balancing control method thereof |
| CN106196771A (en) * | 2016-08-29 | 2016-12-07 | 珠海格力电器股份有限公司 | Gas-liquid separator, air conditioning system and control method of air conditioning system |
| CN107178943A (en) * | 2017-06-21 | 2017-09-19 | 广东美的暖通设备有限公司 | Air-conditioning system and its method for controlling oil return and device |
-
2013
- 2013-09-30 CN CN201320614610.1U patent/CN203550042U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352064A (en) * | 2014-08-19 | 2016-02-24 | 广东美的暖通设备有限公司 | Outdoor unit, multi-connected outdoor unit system, multi-connected air-conditioning unit and oil uniformization control method of multi-connected air-conditioning unit |
| CN105371530A (en) * | 2014-08-19 | 2016-03-02 | 广东美的暖通设备有限公司 | Outdoor units, outdoor unit system, multi-connected air conditioning unit and oil uniformizing control method for multi-connected air conditioning unit |
| CN105444477A (en) * | 2014-08-19 | 2016-03-30 | 广东美的暖通设备有限公司 | Outdoor unit, outdoor unit system, multi-connected air-conditioner unit and oil balancing control method thereof |
| CN105371530B (en) * | 2014-08-19 | 2018-06-29 | 广东美的暖通设备有限公司 | Outdoor unit, outdoor machine system, multi-variable air conditioning unit and its oily control method |
| CN105444477B (en) * | 2014-08-19 | 2018-09-07 | 广东美的暖通设备有限公司 | Outdoor unit, outdoor machine system, multi-variable air conditioning unit and its oily control method |
| CN105352064B (en) * | 2014-08-19 | 2019-01-18 | 广东美的暖通设备有限公司 | Outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control method |
| CN104236171A (en) * | 2014-09-30 | 2014-12-24 | 广东志高暖通设备股份有限公司 | VRF air conditioning system, oil balancing device of VRF air conditioning system and control method of VRF air conditioning system |
| CN104315756A (en) * | 2014-09-30 | 2015-01-28 | 广东志高暖通设备股份有限公司 | VRV (variable refrigerant volume) air conditioning system and oil balance device and control method thereof |
| CN104457031A (en) * | 2014-09-30 | 2015-03-25 | 广东志高暖通设备股份有限公司 | Multi-split air conditioning system and oil balancing devices and control method of multi-split air conditioning system |
| CN106196771A (en) * | 2016-08-29 | 2016-12-07 | 珠海格力电器股份有限公司 | Gas-liquid separator, air conditioning system and control method of air conditioning system |
| CN107178943A (en) * | 2017-06-21 | 2017-09-19 | 广东美的暖通设备有限公司 | Air-conditioning system and its method for controlling oil return and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |