CN206973944U - Refrigeration unit oil return component - Google Patents
Refrigeration unit oil return component Download PDFInfo
- Publication number
- CN206973944U CN206973944U CN201720882731.2U CN201720882731U CN206973944U CN 206973944 U CN206973944 U CN 206973944U CN 201720882731 U CN201720882731 U CN 201720882731U CN 206973944 U CN206973944 U CN 206973944U
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- China
- Prior art keywords
- evaporator
- refrigeration unit
- oil return
- detection means
- unit oil
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Abstract
The utility model discloses a kind of refrigeration unit oil return component.The refrigeration unit oil return component, for the lubricating oil in evaporator to be drawn, including return line, switching device, detection means and controller, the return line connects with the evaporator, the switching device is used to open and close the return line, the detection means is used for the parameter for detecting lubricating oil in the evaporator, the opening and closing of controller switching device according to the state modulator that the detection means detects.Refrigeration unit oil return component provided by the utility model is provided with detection means, the parameter of the lubricating oil in evaporator is detected by detection means, and the working condition of refrigeration unit oil return apparatus is controlled according to oil concentration, improves the runnability of unit, simultaneously, moreover it is possible to ensure the reliability of unit operation.
Description
Technical field
Air conditioner technical field is the utility model is related to, particularly a kind of refrigeration unit oil return component.
Background technology
Water cooled chiller generally uses flooded evaporator, and in unit running process, refrigerant can carry a certain amount of pressure
Lubricating oil in contracting machine is in evaporator, and the content of lubricating oil excessively not only influences heat exchange efficiency in evaporator, while also may be used
The low on fuel in compressor can be made, compressor oil starvation may be caused to run, it is unfavorable to system reliability.By the profit in evaporator
Lubricating oil backs into compressor and is particularly important in time.
Utility model content
In view of this, the utility model provides a kind of refrigeration unit that opening and closing can be controlled according to the oil concentration in evaporator
Oil return component.
The utility model provides a kind of refrigeration unit oil return component, for the lubricating oil in evaporator to be drawn, including returns
Oil pipe line, switching device, detection means and controller, the return line are connected with the evaporator, and the switching device is used
In opening and closing the return line, the detection means is used for the parameter for detecting lubricating oil in the evaporator, the control
The opening and closing of device processed switching device according to the state modulator that the detection means detects.
Preferably, the detection means is arranged in the evaporator and/or on the return line.
Preferably, the detection means is used to detect the concentration of lubricating oil in the evaporator.
Preferably, the detection means is arranged on the return line and is located at the evaporator and the switching device
Between.
Preferably, the detection means in the vertical direction is located at below the liquid level in the evaporator.
Preferably, the refrigeration unit oil return apparatus also includes connecting portion, and the connecting portion is by the return line and institute
State evaporator connection.
Preferably, the connecting portion is connected on the evaporator near or at the position of liquid level in the evaporator
Put.
Preferably, the connecting portion includes multiple connectors, multiple connectors with the evaporator and described time
Oil pipe line connects.
Preferably, multiple connectors are located at different height from the part in the vertical direction that the evaporator connects
Degree.
Preferably, the part that at least one in multiple connectors is connected with the evaporator is located at the evaporation
Below liquid level in device.
Preferably, the switching device is magnetic valve.
Refrigeration unit oil return component provided by the utility model is provided with detection means, and evaporator is detected by detection means
The parameter of interior lubricating oil, and according to the working condition of oil concentration control refrigeration unit oil return apparatus, improve the operation of unit
Performance, simultaneously, moreover it is possible to ensure the reliability of unit operation.
Brief description of the drawings
By the description to the utility model embodiment referring to the drawings, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the utility model refrigeration unit oil return apparatus structural representation.
Embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.It should be understood by one skilled in the art that accompanying drawing is provided to the purpose of explanation provided herein, and accompanying drawing is not necessarily
It is drawn to scale.
Unless the context clearly requires otherwise, otherwise entire disclosure is similar with the " comprising " in claims, "comprising" etc.
Word should be construed to the implication included rather than exclusive or exhaustive implication；That is, it is containing for " including but is not limited to "
Justice.
In description of the present utility model, it is to be understood that term " first ", " second " etc. are only used for describing purpose,
And it is not intended that instruction or hint relative importance.In addition, in description of the present utility model, it is unless otherwise indicated, " more
It is individual " it is meant that two or more.
Refrigeration unit oil return apparatus provided by the utility model is applied to water cooling refrigeration unit, or freezing, refrigeration and its
He is needed in the unit of oil return equipment.
Specifically, as shown in figure 1, refrigeration unit oil return apparatus 10 provided by the utility model is connected on evaporator 20,
The lubricating oil in the evaporator 20 is drawn by the refrigeration unit oil return apparatus 10.
The refrigeration unit oil return apparatus 10 includes return line 11, switching device 12, detection means 13, the and of connecting portion 14
Controller, the switching device 12 are arranged on the return line 11, described for controlling the break-make of the return line 11
Detection means 13 and the switching device 12 electrically connect with the controller, and the detection means 13 passes the data detected
The controller is delivered to, the controller controls the opening and closing of the switching device 12, the connecting portion according to the data received
14 connect the first end of the return line 11 with the inside of evaporator 20, the second end of the return line 11 and oil storage
Device connects, it is preferable that the Fuel Tanking Unit is fuel tank or compressor, i.e., described return line 11 is by the evaporator 20
The lubricating oil of extraction is imported in fuel tank and stored, or, directly the lubricating oil of extraction is imported in compressor.
The switching device 12 controls the break-make of the return line 11, it is preferable that and the switching device 12 is magnetic valve,
The detection means 13 electrically connects with the switching device 12, and the detection means 13 can control opening for the switching device 12
Close.Preferably, the detection means 13 is used to detect the oil concentration in the evaporator 20, and the data detected are sent to
The controller, the controller control the opening and closing of the switching device 12 according to the oil concentration in the evaporator 20, for example,
When the oil concentration that the detection means 13 is detected in the evaporator 20 is higher than the oil return concentration threshold of setting, the control
Device controls the switching device 12 to open, and the refrigeration unit oil return apparatus 10 starts oil return, when the detection means 13 detects
When being less than the oil return concentration threshold of setting to the oil concentration in the evaporator 20, the controller controls the switching device 12
Close, the refrigeration unit oil return apparatus 10 does not work.In other embodiments, the detection means 13 can also detect described
Density of liquid etc. in evaporator 20.
Preferably, the detection means 13 can be arranged on the evaporator 20, directly detected in the evaporator 20
Oil concentration, or, can also as shown in this embodiment, the detection means 13 is arranged on the return line 11, institute
The position that detection means 13 is arranged between the switching device 12 and the connecting portion 14 is stated, further, the detection dress
Put 13 positions for being positioned close to the connecting portion 14, also, the detection means 13 and its between the connecting portion 14
Pipeline in the vertical direction and the connecting portion 14 are highly identical, or positioned at the downside of connecting portion 14, that is, ensure the inspection
Survey device 13 to be located in the evaporator 20 below liquid level, the liquid in the evaporator 20 is flowed to the detection means
At 13.The detection means 13 connects with the inside of return line 11, for detecting the oil concentration in the return line 11,
Because the return line 11 is connected by the connecting portion 14 with the evaporator 20, so the detection means 13 detects
The return line 11 in oil concentration be oil concentration in the evaporator 20.Preferably, the detection means 13 is
Oil concentration sensor.
The connecting portion 14 is connected to close to the opening position where liquid level in the evaporator 20, it is preferable that the connection
Portion 14 is arranged below in the evaporator 20 at liquid level position, to ensure that the return line 11 can be with the evaporation
Fluid connection in device 20, or, the connecting portion 14 is arranged at the liquid level in the evaporator 20, as long as can make institute
State connecting portion 14 and fluid connection in the evaporator 20.Liquid level in the evaporator 20 by working condition or other
Change by a small margin may occur for the influence of factor, in order to ensure the connecting portion 14 can at any time with the evaporator 20
Fluid connection, the connecting portion 14 is provided with multiple connectors 141, multiple connectors 141 with the return line
11 connections, and multiple in the vertical directions of the connector 141 are in different height so that always there is at least one company
Joint 141 is located at below the liquid level in the evaporator 20.Also, the multiple connectors 141 of setting, which also ensure to work as, to be entered
Lubricating oil and refrigerant in the evaporator 20 is immiscible, when lubricating oil level is on refrigerant liquid level, multiple connectors
141 can have at least one in the lube layer, be not in the connecting portion 14 when lubricating oil and refrigerant are layered
Refrigerant can only be drawn onto and the situation of lubricating oil can not be drawn onto, ensure that the oil return efficiency of the refrigeration unit oil return apparatus 10.
Preferably, the refrigeration unit oil return apparatus 10 also includes scavenge oil pump, by the scavenge oil pump by the evaporator
Lubricating oil in 20 is drawn, or, the refrigeration unit oil return apparatus 10 can also be by capillary by the evaporator 20
Lubricating oil draw.
The control method of refrigeration unit oil return apparatus 10 provided by the utility model includes：
When refrigeration unit is run, the oil concentration in the evaporator 20 is detected by the detection means 13, and will detection
To data-signal be transferred in the controller, when the oil concentration that the detection means 13 detects be more than the controller in
During oil return concentration threshold set in advance, the controller controls the switching device 12 to open, the refrigeration unit oil return dress
Put 10 beginning oil returns work.The detection means 13 continues to detect the oil concentration in the evaporator 20, and the number that will be detected
It is believed that number it is transferred in the controller, when the oil concentration that the detection means 13 detects is less than what is set in the controller
During oil return concentration threshold, the controller controls the switching device 12 to close, and the refrigeration unit oil return apparatus 10 stops back
Oil.
Or the oil return cycle can also be set in the controller, the oil return cycle is run including the refrigeration unit
Spaced first time period and second time period under state, the first time period and second time period, at first
Between in section, the controller controls the switching device 12 to close, and the refrigeration unit oil return apparatus 10 does not work, at second
Between in section, the controller controls the switching device 12 to open, and the refrigeration unit oil return apparatus 10 carries out oil return work.It is excellent
Selection of land, in the controller during setting oil return cycle, the detection means 13 can also detect oily dense in the evaporator 20
Degree, also, in the first time period, the detection means 13 detects that the oil concentration in the evaporator 20 is more than, is small
When oil return concentration threshold, the controller is opened all without the control switching device 12, at described second
Between in section, the controller controls the switching device 12 to open, when the detection means 13 is detected in the evaporator 20
Oil concentration when being less than oil return concentration threshold, the control device controls the switching device 12 to close, the detection means 13
When detecting that oil concentration is equal to or more than the oil return concentration threshold in the evaporator 20, opened described in the controller control
Close device 12 to open, start oil return.Or when the oil return cycle is set in the controller, the controller is only according to
The opening and closing of switching device 12 described in oil return periodic Control.
Refrigeration unit oil return apparatus 10 provided by the utility model is by setting the detection means 13 to detect the evaporation
Oil concentration in device 20, and according to the opening and closing of oil concentration control switching device 12, the runnability of unit is improved, simultaneously, moreover it is possible to
Ensure the reliability of unit operation.
For those skilled in the art it is easily understood that on the premise of not conflicting, above-mentioned each preferred scheme can be free
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is only illustrative, and not restrictive, without departing from of the present utility model
In the case of general principle, those skilled in the art can be directed to the various obvious or equivalent modification that above-mentioned details is made
Or replace, all it is included in right of the present utility model.
Claims (11)
- A kind of 1. refrigeration unit oil return component, for the lubricating oil in evaporator to be drawn, it is characterised in that including oil return pipe Road, switching device, detection means and controller, the return line connect with the evaporator, and the switching device is used to beat The open and close return line, the detection means are used for the parameter for detecting lubricating oil in the evaporator, the controller The opening and closing of switching device described in the state modulator detected according to the detection means.
- 2. refrigeration unit oil return component according to claim 1, it is characterised in that the detection means is arranged on the steaming Send out in device and/or on the return line.
- 3. refrigeration unit oil return component according to claim 1, it is characterised in that the detection means is described for detecting Concentration of lubricating oil in evaporator.
- 4. refrigeration unit oil return component according to claim 2, it is characterised in that the detection means is arranged on described return On oil pipe line and between the evaporator and the switching device.
- 5. refrigeration unit oil return component according to claim 4, it is characterised in that the detection means in the vertical direction Below liquid level in the evaporator.
- 6. refrigeration unit oil return component according to claim 1, it is characterised in that the refrigeration unit oil return apparatus also wraps Connecting portion is included, the connecting portion connects the return line with the evaporator.
- 7. refrigeration unit oil return component according to claim 6, it is characterised in that the connecting portion is connected to the evaporation Near or at the position of liquid level in the evaporator on device.
- 8. refrigeration unit oil return component according to claim 6, it is characterised in that the connecting portion includes multiple connections Head, multiple connectors connect with the evaporator and the return line.
- 9. refrigeration unit oil return component according to claim 8, it is characterised in that multiple connectors and the evaporation The part in the vertical direction of device connection is located at different height.
- 10. refrigeration unit oil return component according to claim 8, it is characterised in that in multiple connectors at least One part being connected with the evaporator is located at below the liquid level in the evaporator.
- 11. the refrigeration unit oil return component according to one of claim 1-10, it is characterised in that the switching device is electricity Magnet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720882731.2U CN206973944U (en) | 2017-07-19 | 2017-07-19 | Refrigeration unit oil return component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720882731.2U CN206973944U (en) | 2017-07-19 | 2017-07-19 | Refrigeration unit oil return component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973944U true CN206973944U (en) | 2018-02-06 |
Family
ID=61403180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720882731.2U Active CN206973944U (en) | 2017-07-19 | 2017-07-19 | Refrigeration unit oil return component |
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|---|---|
| CN (1) | CN206973944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504731A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Refrigeration unit oil return component and its control method |
-
2017
- 2017-07-19 CN CN201720882731.2U patent/CN206973944U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504731A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Refrigeration unit oil return component and its control method |
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