CN212081707U - Oil separating system and air conditioner cleaning system - Google Patents
Oil separating system and air conditioner cleaning system Download PDFInfo
- Publication number
- CN212081707U CN212081707U CN202020026798.8U CN202020026798U CN212081707U CN 212081707 U CN212081707 U CN 212081707U CN 202020026798 U CN202020026798 U CN 202020026798U CN 212081707 U CN212081707 U CN 212081707U
- Authority
- CN
- China
- Prior art keywords
- bypass branch
- oil
- oil separator
- lubricating oil
- pipe temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an oil separating system, clean system of air conditioner, wherein, oil separating system, include: the bypass branch is connected between an inner machine and an outer machine of the air conditioning system through a pipeline and used for separating lubricating oil and refrigerant flowing from the inner machine to the outer machine, and the inner machine is communicated with the outer machine through a main loop. Through the utility model discloses, solved and to have cleaned the technical problem of lubricating oil through tearing open the machine among the correlation technique, provided a exempt from to tear open the scheme of cleaning lubricating oil, under the condition of not demolising original pipeline, unit, through oil separating technique, can come out old air conditioning system's lubricating oil separation to take place chemical reaction with new air conditioning system's refrigerant and lubricating oil, saved the clearing-up time, improved cleaning efficiency.
Description
Technical Field
The utility model relates to an air conditioner field particularly, relates to an oil separating system, clean system of air conditioner.
Background
In the related art, with the spread of air conditioners, an air conditioner is now installed in substantially every room. For a common household air conditioner, when the air conditioner has the problems of failure, aging and the like, the air conditioner can be selectively repaired or replaced. However, in the multi-split air conditioner, once the unit is replaced, the problem that the lubricating oil cannot be used commonly between the updating unit and the original unit exists, and each outdoor unit, each indoor unit and each connecting pipe need to be detached, so that the process is long in period and high in cost.
In view of the above problems in the related art, no effective solution has been found at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an oil separating system, clean system of air conditioner to can only wash the technical problem of lubricating oil through tearing open among the solution correlation technique.
According to an embodiment of the present invention, there is provided an oil separation system including: the bypass branch is connected between an inner machine and an outer machine of the air conditioning system through a pipeline and used for separating lubricating oil and refrigerant flowing from the inner machine to the outer machine, and the inner machine is communicated with the outer machine through a main loop.
Optionally, the bypass branch includes: and the oil separator is arranged in the middle of the bypass branch and is used for discharging residual liquid lubricating oil out of the bypass branch after the liquid refrigerant in the mixture is converted into a gas state, wherein the mixture comprises the liquid refrigerant and the liquid lubricating oil.
Optionally, the oil separator comprises: ribs disposed on an outer surface of the oil separator; a blower for circulating the inside air and the outside air of the oil separator.
Optionally, the bypass branch further includes: and the filter is arranged on the pipeline before the oil separator and used for filtering solids in the pipeline.
Optionally, the bypass branch further includes: and the expansion valve is arranged on a pipeline in front of the oil separator and used for controlling the flow of the bypass branch.
Optionally, the bypass branch further includes: the temperature sensing bulb is connected with the expansion valve, comprises an inlet pipe temperature sensing bulb arranged in front of the oil separator and an outlet pipe temperature sensing bulb arranged behind the oil separator, and is used for acquiring the inlet pipe temperature and the outlet pipe temperature of the bypass branch and transmitting the inlet pipe temperature and the outlet pipe temperature to the controller of the external unit, wherein the controller is used for generating a control instruction according to the temperature difference between the outlet pipe temperature and the inlet pipe temperature; and the expansion valve is used for adjusting the opening of the valve according to the control command.
Optionally, the expansion valve is further configured to maintain the valve opening degree according to a first control instruction when the temperature difference is equal to a preset threshold, increase the valve opening degree according to a second control instruction when the temperature difference is greater than the preset threshold, and decrease the valve opening degree according to a third control instruction when the temperature difference is less than the preset threshold, where the preset threshold is related to a superheat degree of the refrigerant.
Optionally, the bypass branch further includes: and the stop valve comprises a first stop valve arranged in front of the oil separator and a second stop valve arranged behind the oil separator and is used for controlling the on-off of the bypass branch.
According to another embodiment of the present invention, there is provided an air conditioner cleaning system, including: an air conditioning system, and an oil separation system as described in the above embodiments, wherein the main circuit is in parallel with the bypass branch.
Optionally, a ball valve is arranged on the main loop and used for controlling the on-off of the main loop.
According to still another embodiment of the present invention, there is provided an oil separation control method including: collecting the temperature of an inlet pipe before the mixture flows through an oil separator and the temperature of an outlet pipe after the mixture flows through the oil separator, wherein the oil separator is arranged on a bypass branch between an inner machine and an outer machine of an air conditioning system, and the oil separator is used for discharging the residual liquid lubricating oil out of the bypass branch after converting the liquid refrigerant in the mixture into a gas state; calculating the temperature difference between the outlet pipe temperature and the inlet pipe temperature; and controlling the flow of the bypass branch according to the temperature difference.
Optionally, the controlling the flow rate of the bypass branch according to the temperature difference includes: comparing the temperature difference with a preset threshold value, wherein the preset threshold value is related to the superheat degree of the refrigerant; when the temperature difference is equal to the preset threshold value, controlling an expansion valve on the bypass branch to maintain the valve opening; when the temperature difference is larger than the preset threshold value, controlling an expansion valve on the bypass branch to increase the valve opening; and when the temperature difference is smaller than the preset threshold value, controlling an expansion valve on the bypass branch to reduce the valve opening.
Through the scheme of this embodiment, through set up the bypass branch road outside the main circuit at air conditioning system's the interior machine and outer machine, separate lubricating oil and refrigerant in the bypass branch road, the technical problem that can only wash lubricating oil through tearing open among the correlation technique has been solved, a scheme of exempting from to tear open and wash lubricating oil is provided, under the condition of not demolising original pipeline, unit, through oil separating technique, can isolate old air conditioning system's lubricating oil, take place chemical reaction with new air conditioning system's refrigerant and lubricating oil, the cleaning time has been saved, the cleaning efficiency has been improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a connection diagram of an oil separation system according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the invention, showing a fin;
fig. 3 is a flow chart of controlling the opening of the valve according to the embodiment of the present invention;
FIG. 4 is a connection diagram of a bypass branch according to an embodiment of the present invention;
fig. 5 is a connection diagram of an air conditioning cleaning system according to an embodiment of the present invention;
fig. 6 is a flow chart of a control method of oil separation according to an embodiment of the present invention.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the present embodiment, an oil separation system is provided, and fig. 1 is a connection diagram of an oil separation system according to an embodiment of the present invention, as shown in fig. 1, the system includes:
the bypass branch 10 is connected between an inner unit 12 and an outer unit 14 of the air conditioning system through a pipeline, and is used for separating lubricating oil and refrigerant flowing from the inner unit to the outer unit, and the inner unit and the outer unit are communicated through a main loop 16. The main loop is a working loop when the air conditioning system is used for normal refrigeration or heating.
The present embodiment can separate the lubricant and the refrigerant in the pipeline by chemical separation or physical separation, for example, a reagent reacting only with the lubricant is disposed in the pipeline of the bypass branch to generate a substance immiscible with the refrigerant, thereby discharging the pipeline, or a gas is generated to directly evaporate or gasify the discharge pipeline. Or the lubricating oil is evaporated by utilizing the difference of the superheat degree of the lubricating oil and the refrigerant.
Through the scheme of this embodiment, through set up the bypass branch road outside the main circuit at air conditioning system's the interior machine and outer machine, separate lubricating oil and refrigerant in the bypass branch road, the technical problem that can only wash lubricating oil through tearing open among the correlation technique has been solved, a scheme of exempting from to tear open and wash lubricating oil is provided, under the condition of not demolising original pipeline, unit, through oil separating technique, can isolate old air conditioning system's lubricating oil, take place chemical reaction with new air conditioning system's refrigerant and lubricating oil, the cleaning time has been saved, the cleaning efficiency has been improved.
In this embodiment, the bypass branch includes: and the oil separator is arranged in the middle of the bypass branch and is used for discharging the residual liquid lubricating oil out of the bypass branch after the liquid refrigerant in the mixture is converted into a gas state, wherein the mixture comprises the liquid refrigerant and the liquid lubricating oil. Alternatively, a shut-off valve may be installed at the outlet of the oil separator, through which the liquid lubricating oil is discharged. The lubricating oil is cleaned, and meanwhile, the recycling of the refrigerant is realized.
In an embodiment of the present embodiment, an oil separator includes: the fins are arranged on the outer surface of the oil separator; and a blower for circulating the inside air and the outside air of the oil separator. The fins can improve the heat exchange area and the heat exchange coefficient of the internal refrigerant and the external air, enhance the heat exchange effect and accelerate the evaporation speed. The fan can accelerate the flow of outside air, and further enhance the heat exchange effect of the refrigerant and the outside air. Fig. 2 is a cross-sectional view of an embodiment of the invention, showing a rib. Optionally, the oil separator further comprises: and the heater is used for generating heat and generating heat absorbed in the evaporation process, so that the evaporation speed is improved.
In an embodiment of this embodiment, the bypass branch further comprises: and the filter is arranged on the pipeline in front of the oil separator and used for filtering solids in the pipeline. The mixture also comprises scrap iron and the like worn by the compressor, and impurities in the system can be prevented from blocking the expansion valve by installing the filter.
In an embodiment of this embodiment, the bypass branch further comprises: and the expansion valve is arranged on a pipeline in front of the oil separator and used for controlling the flow of the bypass branch. Before the mixture flows through the oil separator, the mixture firstly passes through an expansion valve, and the flow of liquid in a pipeline can be controlled through the expansion valve, so that the flow control is realized. Optionally, the bypass branch further comprises: the temperature sensing bulb is connected with the expansion valve, comprises an inlet pipe temperature sensing bulb arranged in front of the oil separator and an outlet pipe temperature sensing bulb arranged behind the oil separator, and is used for acquiring the inlet pipe temperature and the outlet pipe temperature of the bypass branch and transmitting the inlet pipe temperature and the outlet pipe temperature to the controller of the external unit, wherein the controller is used for generating a control instruction according to the temperature difference between the outlet pipe temperature and the inlet pipe temperature; and the expansion valve is used for adjusting the valve opening according to the control command.
In an embodiment of the present embodiment, the expansion valve is further configured to maintain the valve opening degree according to the first control command when the temperature difference is equal to a preset threshold, to increase the valve opening degree according to the second control command when the temperature difference is greater than the preset threshold, and to decrease the valve opening degree according to the third control command when the temperature difference is less than the preset threshold, wherein the preset threshold is related to a degree of superheat of the refrigerant.
Fig. 3 is a flow chart of controlling the opening of the valve according to an embodiment of the present invention, in which an inlet pipe thermal bulb and an outlet pipe thermal bulb are respectively installed on an inlet pipe and an outlet pipe of an oil separator to test an inlet pipe temperature t1 and an outlet pipe temperature t 2; the degree of superheat n is set to be n, and the degree of superheat n can be set to be 0, 1, 2, 3, 4, etc., and t2-t1 (outlet pipe temperature-inlet pipe temperature) is calculated. The process comprises the following steps:
after the unit enters a cleaning mode, starting a fan, setting the initial opening degree of an expansion valve to be A0, and running for T time;
after T time, the unit starts to detect;
when t2-t1 is equal to n, the expansion valve maintains the current opening degree a 0;
when t2-t1 > n, the expansion valve increases the opening degree to A1 to increase the refrigerant flow path and stabilize the superheat degree at n;
when t2-t1 < n, the expansion valve reduces the opening degree to A2 to reduce the flow of the refrigerant and stabilize the superheat degree at n; wherein A1 > A0 > A2;
after each run of T0, T2-T1 and n are again compared and the expansion valve opening is still controlled as described above.
The efficiency of separating the refrigerant from the lubricating oil in the oil separation can be improved, and the evaporation of the refrigerant can be accelerated.
Optionally, the bypass branch further comprises: and the stop valve comprises a first stop valve arranged in front of the oil separator and a second stop valve arranged behind the oil separator and is used for controlling the on-off of the bypass branch.
Fig. 4 is a connection diagram of the bypass branch according to the embodiment of the present invention, as shown in fig. 4, in the original refrigeration system, a branch is bypassed, the branch is sequentially installed with a stop valve 1, a filter, an expansion valve, an inlet pipe thermal bulb, an oil separator with fins, an outlet pipe thermal bulb, a stop valve 2, a fan, and a stop valve 3, and each component is communicated with the original air conditioning system through a copper pipe. When the ball valve is opened and the stop valves 1 and 2 are closed, the refrigerant (refrigerant) passes through one path of the ball valve, and when the ball valve is closed and the stop valves 1 and 2 are opened, the refrigerant passes through one path of the stop valves 1 and 2.
After the air conditioning system enters a cleaning mode, the electronic valve of the indoor unit is controlled to be in a full-on state, an indoor unit fan is closed and a ball valve is closed all the time. After the refrigerant flows from the external machine to the internal machine, the refrigerant enters the oil separator through the stop valve 1 and the filter.
The oil separator is externally provided with a fin structure, so that the heat exchange area and the heat exchange coefficient of an internal refrigerant and external air can be improved, the heat exchange effect is enhanced, and the evaporation speed is increased. The fan is arranged, so that the flow of outside air can be accelerated, and the heat exchange effect of the refrigerant and the outside air is further enhanced.
After passing through the oil separator, the gaseous refrigerant flows back to the external unit through the stop valve 2, and the lubricating oil in the oil separator is discharged out of the system through the stop valve 3.
Through increase the fin in oil separator outside, install the fan additional simultaneously, can strengthen the heat transfer effect of inside refrigerant and outside air, improve the evaporation rate of refrigerant in the oil separator for oil in the system and refrigerant more fast, more thorough separation. Meanwhile, the opening degree of the expansion valve is controlled, the flow of the refrigerant flowing through the oil separator is controlled, the refrigerant is fully evaporated, and the oil separation efficiency is improved. The lubricating oil of the original system can be separated by an oil separation technology under the condition of not dismantling the original pipeline and the original unit, so that the lubricating oil can not be mutually dissolved or chemically reacted with the existing refrigerant and the lubricating oil, and the oil separator saves labor, time and money.
This embodiment still provides an air conditioner cleaning system, and fig. 5 is according to the utility model discloses an air conditioner cleaning system's connection diagram, as shown in fig. 5, includes: an air conditioning system (consisting of an inner machine 50 and an outer machine 52), and an oil separation system 54 as described in the previous embodiment, wherein the main circuit is connected in parallel with the bypass branch. Optionally, a ball valve is arranged on the main loop and used for controlling the on-off of the main loop.
Besides the air conditioner, the air conditioning cleaning system of the embodiment can also be applied to other multi-split air conditioners which are communicated through pipelines.
In the present embodiment, a control method for oil separation is provided, which is applied to the oil separation system described in the above embodiments, and the control method can be applied to an air conditioning system (such as an internal unit, an external unit, a line controller, etc.) or an external controller, and fig. 6 is a flowchart of a control method for oil separation according to an embodiment of the present invention, as shown in fig. 6, the flowchart includes:
s602, collecting the temperature of an inlet pipe before the mixture flows through an oil separator and the temperature of an outlet pipe after the mixture flows through the oil separator, wherein the oil separator is arranged on a bypass branch between an inner machine and an outer machine of the air conditioning system, and the oil separator is used for discharging the residual liquid lubricating oil out of the bypass branch after converting the liquid refrigerant in the mixture into a gas state;
s604, calculating the temperature difference between the outlet pipe temperature and the inlet pipe temperature;
and S606, controlling the flow of the bypass branch according to the temperature difference.
Optionally, the controlling the flow rate of the bypass branch according to the temperature difference includes: comparing the temperature difference with a preset threshold value, wherein the preset threshold value is related to the superheat degree of the refrigerant; when the temperature difference is equal to a preset threshold value, controlling an expansion valve on the bypass branch to maintain the valve opening; when the temperature difference is larger than a preset threshold value, controlling an expansion valve on the bypass branch to increase the valve opening; and when the temperature difference is smaller than a preset threshold value, controlling an expansion valve on the bypass branch to reduce the valve opening.
The separation speed of the separator and the flow of the bypass branch can be matched by controlling the flow of the bypass branch, the higher the separation speed is, the higher the flow speed is, the separation efficiency of the refrigerant and the lubricating oil in the oil separation can be improved, and the evaporation of the refrigerant is accelerated.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An oil separation system, comprising:
the bypass branch is connected between an inner machine and an outer machine of the air conditioning system through a pipeline and used for separating lubricating oil and refrigerant flowing from the inner machine to the outer machine, and the inner machine is communicated with the outer machine through a main loop.
2. The oil separation system of claim 1, wherein the bypass branch comprises:
and the oil separator is arranged in the middle of the bypass branch and is used for discharging residual liquid lubricating oil out of the bypass branch after the liquid refrigerant in the mixture is converted into a gas state, wherein the mixture comprises the liquid refrigerant and the liquid lubricating oil.
3. The oil separation system of claim 2, wherein the oil separator comprises:
ribs disposed on an outer surface of the oil separator;
a blower for circulating the inside air and the outside air of the oil separator.
4. The oil separation system of claim 2, wherein the bypass branch further comprises:
and the filter is arranged on the pipeline before the oil separator and used for filtering solids in the pipeline.
5. The oil separation system of claim 2, wherein the bypass branch further comprises:
and the expansion valve is arranged on a pipeline in front of the oil separator and used for controlling the flow of the bypass branch.
6. The oil separation system of claim 5, wherein the bypass branch further comprises:
the temperature sensing bulb is connected with the expansion valve, comprises an inlet pipe temperature sensing bulb arranged in front of the oil separator and an outlet pipe temperature sensing bulb arranged behind the oil separator, and is used for acquiring the inlet pipe temperature and the outlet pipe temperature of the bypass branch and transmitting the inlet pipe temperature and the outlet pipe temperature to the controller of the external unit, wherein the controller is used for generating a control instruction according to the temperature difference between the outlet pipe temperature and the inlet pipe temperature;
and the expansion valve is used for adjusting the opening of the valve according to the control command.
7. The oil separation system of claim 2, wherein the bypass branch further comprises:
and the stop valve comprises a first stop valve arranged in front of the oil separator and a second stop valve arranged behind the oil separator and is used for controlling the on-off of the bypass branch.
8. An air conditioning cleaning system, comprising: an air conditioning system, and an oil separation system as set forth in any one of claims 1-7 wherein said primary circuit is connected in parallel with said bypass branch.
9. An air conditioning cleaning system according to claim 8, wherein a ball valve is provided on the main circuit for controlling the on-off of the main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026798.8U CN212081707U (en) | 2020-01-07 | 2020-01-07 | Oil separating system and air conditioner cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026798.8U CN212081707U (en) | 2020-01-07 | 2020-01-07 | Oil separating system and air conditioner cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212081707U true CN212081707U (en) | 2020-12-04 |
Family
ID=73565885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020026798.8U Active CN212081707U (en) | 2020-01-07 | 2020-01-07 | Oil separating system and air conditioner cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212081707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121351A (en) * | 2020-01-07 | 2020-05-08 | 珠海格力电器股份有限公司 | Oil separation system, air conditioner cleaning system and oil separation control method |
-
2020
- 2020-01-07 CN CN202020026798.8U patent/CN212081707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121351A (en) * | 2020-01-07 | 2020-05-08 | 珠海格力电器股份有限公司 | Oil separation system, air conditioner cleaning system and oil separation control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9377225B2 (en) | Outdoor heat exchanger and air conditioner comprising the same | |
| KR100821728B1 (en) | Air conditioning system | |
| EP0842798A3 (en) | Automotive air conditioning system | |
| CN212081707U (en) | Oil separating system and air conditioner cleaning system | |
| CN113614470B (en) | Air conditioning equipment | |
| CN111121351A (en) | Oil separation system, air conditioner cleaning system and oil separation control method | |
| US8205463B2 (en) | Air conditioner and method of controlling the same | |
| US20040168446A1 (en) | Method for refrigerant and oil collecting operation and refrigerant and oil collection controller | |
| KR20100058062A (en) | Air-conditioning system | |
| JPH05172429A (en) | Air conditioner | |
| US9267716B2 (en) | Heat exchanger and an air conditioning system having the same | |
| CN111156747A (en) | Refrigerant cleaning device and method and air conditioner | |
| CN110529993B (en) | Operation control device and method, air conditioner, and computer-readable storage medium | |
| CN111853975A (en) | High-temperature-resistant control method for dehumidifier | |
| JP2005003250A (en) | Air conditioner and its control method | |
| KR20200134805A (en) | An air conditioning apparatus | |
| JP3181117B2 (en) | Air conditioner | |
| KR100964369B1 (en) | Air conditioner's control method | |
| JP3123873B2 (en) | Air conditioner | |
| JP4052020B2 (en) | Heat pump system | |
| JP7217395B1 (en) | air conditioner | |
| JP2002122364A (en) | Refrigerating apparatus and air conditioner using the apparatus | |
| JP2004044939A (en) | Existing pipe washing method and system for air conditioner | |
| JP3133647B2 (en) | Air conditioner | |
| JP2003262383A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |