CN211552096U - Oil supplementing device and screw type water chilling unit system - Google Patents
Oil supplementing device and screw type water chilling unit system Download PDFInfo
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- CN211552096U CN211552096U CN201921896064.9U CN201921896064U CN211552096U CN 211552096 U CN211552096 U CN 211552096U CN 201921896064 U CN201921896064 U CN 201921896064U CN 211552096 U CN211552096 U CN 211552096U
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Abstract
The utility model provides a mend oily device and screw cooling water battery system suitable for screw cooling water battery system relates to air conditioner technical field, has solved the compressor that exists among the prior art and has stopped because of the oil level is low and the trouble, thereby the oil level can not reach the technical problem that the requirement can lead to the unit to shut down once more in the certain time after the manual debugging oil return and influence work efficiency. The oil supplementing device comprises a spare oil tank, a pressure regulating assembly and a switching assembly, wherein the spare oil tank is connected with an oil storage cavity of the compressor through an oil supplementing pipeline, the pressure regulating assembly and the switching assembly can control the on-off of the oil supplementing pipeline, and the structure can control the on-off of the oil supplementing pipeline through the pressure regulating assembly and the switching assembly to return oil for the oil storage tank of the compressor in advance when the compressor is in fault shutdown due to low oil level, so that the compressor is prevented from returning oil in time in the oil storage cavity of the compressor after manual debugging, and the compressor is stopped again to influence the working efficiency.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner technique and specifically relates to a mend oily device and screw cooling water unit system.
Background
The refrigeration oil is an important lubricant for the operation of the screw type refrigeration compressor, has the functions of lubrication, sealing, temperature reduction, energy regulation and the like, and plays an extremely important role in ensuring the operation reliability and the service life of the compressor. The water-cooled screw water chilling unit adopting the flooded evaporator has the advantages that the oil leakage of the screw compressor is an urgent problem to be solved by various large air conditioner manufacturers, and the oil leakage seriously causes the low oil level in the compressor and the fault shutdown. The common way is to adjust the opening of the electronic expansion valve logically or manually by restarting the engine, so that the unit has a large pressure difference, and the oil which runs into the system returns to the compressor for oil return. However, when the oil return rate is low, the oil level still cannot meet the requirement within a certain time, so that the unit is stopped again, and the reliability and the working efficiency of the unit are affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an mend oily device and screw cooling water unit system to thereby solve the compressor that exists among the prior art and stop because of the oil level is low and the trouble, thereby the oil level can not reach the technical problem that the requirement can lead to the unit to shut down once more in the certain time after the manual debugging oil return and influence work efficiency.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an oil supplementing device suitable for screw cooling water unit system, including reserve tank, pressure regulating subassembly and switching module, reserve tank links to each other with compressor oil storage chamber through the oil supplementing pipeline, through pressure regulating subassembly with switching module can control the break-make of oil supplementing pipeline.
Optionally, the pressure regulating assembly comprises a regulating branch and a first valve body arranged in the regulating branch, the reserve oil tank is connected with the air inlet end of the compressor through the regulating branch, and the pressure of the reserve oil tank is regulated by controlling the switch of the first valve body.
Optionally, the oil separator further comprises an oil return pipeline, the spare oil tank is connected with the oil separator through the oil return pipeline, and the pressure adjusting assembly is matched with the switching assembly to control the on-off of the oil return pipeline.
Optionally, the switching assembly includes a second valve body disposed in the oil supply line and a third valve body disposed in the oil return line.
Optionally, the reserve oil tank is located higher in the vertical direction than the compressor.
Optionally, all valve bodies are normally closed and are solenoid valves.
Optionally, the oil supplementing device further includes a control component, a first oil content detector and a second oil content detector, the first oil content detector is disposed at the highest oil level of the compressor oil tank, the second oil content detector is disposed at the highest oil level of the reserve oil tank, and the first oil content detector, the second oil content detector and all the valve bodies are electrically connected to the control component respectively.
Optionally, the pressure regulating assembly is in communication with the reserve tank top.
Optionally, the compressor oil storage chamber is communicated with the bottom of the reserve oil tank.
A screw chiller system comprises the oil supplementing device suitable for the screw chiller system.
The utility model provides an mend oily device suitable for screw cooling water unit system, its beneficial effect is for can be when the compressor is because of the oil level low fault shutdown, returns oil in advance for the compressor batch oil tank through the break-make of pressure regulating subassembly and switching over subassembly control oil supplementing pipeline, thereby makes the compressor avoid appearing the phenomenon that the compressor batch oil intracavity can not in time return oil and shut down once more and influence work efficiency after artifical debugging returns oil.
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 view of an overall structure of an oil supply device suitable for a screw chiller system according to the present invention;
fig. 2 is a schematic structural diagram of a screw chiller system.
In the figure 1, a spare oil tank; 2. adjusting the branch; 3. a first valve body; 4. an oil supplementing pipeline; 5. an oil return line; 6. a compressor; 7. an oil storage chamber; 8. an air inlet end; 9. an oil separator; 10. a second valve body; 11. a third valve body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides an oil supplementing device suitable for a screw type water chilling unit system, as shown in figures 1 and 2, comprising a spare oil tank 1, a pressure adjusting component and a switching component, the spare oil tank 1 is connected with an oil storage cavity 7 of a compressor 6 through an oil supplementing pipeline 4, the on-off of the oil supplementing pipeline 4 can be controlled through the pressure adjusting component and the switching component, the structure can control the on-off of the oil supplementing pipeline 4 to return oil in advance to the oil storage tank of the compressor 6 through the pressure adjusting assembly and the switching assembly when the compressor 6 is in fault shutdown due to low oil level, so that the phenomenon that the oil storage chamber 7 of the compressor 6 cannot return oil in time and is shut down again to influence the working efficiency after the compressor 6 is manually debugged to return oil is avoided, the efficiency of debugging the oil return after the oil level switch of the unit is in fault restart is improved, and the reliability of high-efficiency operation of the unit is improved; meanwhile, a convenient method is provided for supplementing the refrigeration oil.
As an optional implementation manner, the pressure regulating assembly comprises a regulating branch 2 and a first valve body 3 arranged in the regulating branch 2, the reserve oil tank 1 is connected with an air inlet end 8 of the compressor 6 through the regulating branch 2, and the pressure of the reserve oil tank 1 is regulated by controlling the opening and closing of the first valve body 3; when the unit is shut down and oil needs to be supplemented by the spare oil tank 1, the adjusting branch 2 and the oil supplementing pipeline 4 are communicated to enable the spare oil tank 1 to supplement oil for the oil storage cavity 7 of the compressor 6, when oil supplement is finished, the adjusting branch 2 and the oil supplementing pipeline 4 are disconnected, oil supplement work of the spare oil tank 1 is finished, and then the unit is operated to carry out a normal oil return process of the compressor 6.
As an optional implementation mode, the oil separator further comprises an oil return pipeline 5, the reserve oil tank 1 is connected with the oil separator 9 through the oil return pipeline 5, and the pressure adjusting assembly is matched with the switching assembly to control the on-off of the oil return pipeline 5.
The utility model discloses still include back oil pipe way 5, reserve tank 1 passes through back oil pipe way 5 links to each other with oil separator 9, pressure regulating assembly with switching module cooperatees and can control return oil pipe way 5's break-make, when the work of 1 completion of reserve tank for the oil return of compressor 6 and start unit operation, pressure regulating assembly can provide certain negative pressure for the postbox, and utilizes switching module intercommunication back oil pipe way 5 simultaneously, makes the fluid in the oil separator 9 can flow back in reserve tank 1, does the preparation for the oil return work of next time.
As an alternative embodiment, the switching assembly comprises a second valve body 10 arranged in the oil supply line 4 and a third valve body 11 arranged in the oil return line 5, facilitating the communication and disconnection of the passages.
As an alternative embodiment, the reserve oil tank 1 is located at a position higher than the position of the compressor 6 in the vertical direction.
Reserve tank 1 is higher than in the ascending position of vertical side the position of compressor 6 can guarantee that the refrigeration oil relies on self gravity to supply by reserve tank 1 to the 6 oil storage chambeies of compressor 7 under the condition of oil supplementing pipe way 4 and regulation branch 2 intercommunication, and simple structure is practical.
As an optional implementation mode, all the valve bodies are normally closed and are electromagnetic valves, and the normally closed valve bodies can ensure that the normal operation of the unit is not influenced by the oil supplementing device under the normal operation of the unit; the valve bodies are all electromagnetic valves, so that the device can be controlled more conveniently.
As an optional embodiment, the oil supplementing device further comprises a control component, a first oil content detector and a second oil content detector, wherein the first oil content detector is arranged at the highest oil level of the oil tank of the compressor 6, the second oil content detector is arranged at the highest oil level of the reserve oil tank 1, and the first oil content detector, the second oil content detector and all the valve bodies are respectively electrically connected with the control component; when the oil return of the compressor 6 is carried out in the traditional mode, when the oil level rises to the highest oil level of the oil groove of the compressor 6, the controller receives a signal of the first oil content detector to control the first valve body 3 and the third valve body 11 to be opened, so that the refrigeration oil flows back to the spare oil tank 1 from the oil separator 9 under the action of negative pressure brought by the adjusting branch 2; when the oil reaches the highest position of the reserve oil tank 1, the controller receives a signal of the second oil content detector to close the first valve body 3 and the third valve, oil return of the reserve oil tank 1 is finished, and preparation is made for oil return of the compressor 6 next time.
As an alternative embodiment, the pressure regulating assembly is communicated with the top of the reserve tank 1, so as to communicate the atmospheric pressure or provide the negative pressure for the reserve tank 1 without oil flowing into the pressure regulating assembly.
As an optional implementation mode, the oil storage cavity 7 of the compressor 6 is communicated with the bottom of the reserve oil tank 1, so that oil can be returned to the reserve oil tank 1 conveniently, and the oil return efficiency of the reserve oil tank 1 is higher.
A screw chiller system comprises the oil supplementing device suitable for the screw chiller system.
The screw type water chilling unit system can control the on-off of the oil supplementing pipeline 4 to return oil to the oil storage tank of the compressor 6 in advance through the pressure adjusting assembly and the switching assembly when the compressor 6 is shut down due to low oil level, so that the phenomenon that the compressor 6 cannot be shut down again due to the fact that oil cannot be returned in time in the oil storage cavity 7 of the compressor 6 after oil return is debugged manually is avoided.
An oil return method of a screw type water chilling unit system comprises the oil supplementing device suitable for the screw type water chilling unit system, and the oil return steps are as follows:
the method comprises the following steps: when the unit displays the oil level switch fault of the compressor 6, the unit is in fault shutdown, and then the oil supplementing pipeline 4 is communicated, so that oil enters the oil storage cavity 7 of the compressor 6 from the oil supplementing pipeline 4 under the action of the pressure regulating assembly to supplement the oil;
step two: the oil level of the compressor 6 rises until the fault alarm of the oil level switch of the compressor 6 is relieved, and the oil supplementing pipeline 4 is disconnected;
step three: the unit is started, and the oil return of the unit is manually adjusted through the conventional technology, so that the oil level in the compressor 6 is raised to realize oil return, and the compressor 6 is enabled to normally run.
As an optional embodiment, the oil-saving system further comprises an oil return pipeline 5, in the third step, when the oil level of the compressor 6 rises to the highest oil level, the oil return pipeline 5 is communicated, and under the pressure difference between the pressure regulating assembly and the unit oil separator 9, the oil flows into the spare oil tank 1 from the unit oil separator 9; and when the oil in the spare oil tank 1 rises to the highest position, the oil return pipeline 5 is disconnected, and the oil return of the spare oil tank 1 is finished.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a mend oily device suitable for screw cooling water unit system which characterized in that: including reserve tank, pressure regulating assembly and switching module, reserve tank links to each other with compressor oil storage chamber through the oil supply pipeline, through pressure regulating assembly with switching module can control the break-make of oil supply pipeline.
2. The oil replenishing device for a screw chiller system according to claim 1, wherein: the pressure regulating assembly comprises a regulating branch and a first valve body arranged in the regulating branch, the reserve oil tank is connected with the air inlet end of the compressor through the regulating branch, and the pressure of the reserve oil tank is regulated by controlling the on-off of the first valve body.
3. The oil replenishing device suitable for the screw chiller system according to any one of claims 1 or 2, wherein: the oil return device is characterized by further comprising an oil return pipeline, the spare oil tank is connected with the oil separator through the oil return pipeline, and the pressure adjusting assembly is matched with the switching assembly to control the on-off of the oil return pipeline.
4. The oil replenishing device for a screw chiller system according to claim 3, wherein: the switching assembly comprises a second valve body arranged in the oil supplementing pipeline and a third valve body arranged in the oil returning pipeline.
5. The oil replenishing device for a screw chiller system according to claim 2, wherein: the reserve oil tank is higher in position in the vertical direction than the compressor.
6. The oil replenishing device suitable for the screw chiller system according to claim 4, wherein: all valve bodies are normally closed and are electromagnetic valves.
7. The oil replenishing device suitable for the screw chiller system according to claim 6, wherein: mend oily device still includes control assembly, first oil content detector and second oil content detector, first oil content detector set up in the highest oil level of compressor oil groove, second oil content detector set up in the highest oil level of reserve tank, first oil content detector second oil content detector and all valve bodies respectively with control assembly electric connection.
8. The oil replenishing device for a screw chiller system according to claim 1, wherein: the pressure adjusting assembly is communicated with the top of the reserve oil tank.
9. The oil replenishing device for a screw chiller system according to claim 1, wherein: the compressor oil storage cavity is communicated with the bottom of the reserve oil tank.
10. A screw chiller system characterized in that: the oil supplementing device suitable for the screw chiller system comprises any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896064.9U CN211552096U (en) | 2019-11-05 | 2019-11-05 | Oil supplementing device and screw type water chilling unit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896064.9U CN211552096U (en) | 2019-11-05 | 2019-11-05 | Oil supplementing device and screw type water chilling unit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211552096U true CN211552096U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921896064.9U Withdrawn - After Issue CN211552096U (en) | 2019-11-05 | 2019-11-05 | Oil supplementing device and screw type water chilling unit system |
Country Status (1)
| Country | Link |
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| CN (1) | CN211552096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836548A (en) * | 2019-11-05 | 2020-02-25 | 珠海格力电器股份有限公司 | Oil supplementing device, screw type water chilling unit system and oil return method |
-
2019
- 2019-11-05 CN CN201921896064.9U patent/CN211552096U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836548A (en) * | 2019-11-05 | 2020-02-25 | 珠海格力电器股份有限公司 | Oil supplementing device, screw type water chilling unit system and oil return method |
| CN110836548B (en) * | 2019-11-05 | 2023-08-08 | 珠海格力电器股份有限公司 | Oil supplementing device, screw type water chilling unit system and oil return method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200922 Effective date of abandoning: 20230808 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200922 Effective date of abandoning: 20230808 |