CN219827170U - Volute booster-type refrigerant pump - Google Patents
Volute booster-type refrigerant pump Download PDFInfo
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- CN219827170U CN219827170U CN202320660580.1U CN202320660580U CN219827170U CN 219827170 U CN219827170 U CN 219827170U CN 202320660580 U CN202320660580 U CN 202320660580U CN 219827170 U CN219827170 U CN 219827170U
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- volute
- liquid outlet
- liquid inlet
- impeller
- refrigerant pump
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 98
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000110 cooling liquid Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a volute supercharged refrigerant pump, which comprises: a volute having a volute cavity with an internal impeller; the outer shell is provided with a liquid inlet and a liquid outlet, the inner cavity of the outer shell is divided into two parts by a volute, the liquid inlet and the liquid outlet are respectively communicated with the liquid inlet and the liquid outlet, and the volute is provided with an inner liquid inlet and an inner liquid outlet which are respectively communicated with the liquid inlet and the liquid outlet; the motor assembly is arranged in the liquid outlet cavity, comprises an inner shell and an output shaft penetrating out of the inner shell to be connected with the impeller, the volute is provided with an opening for the output shaft to pass through, and the inner shell is attached to the volute and seals the opening. The refrigerant pump adopts a volute pressurizing mode to stably pressurize the refrigerant, so that the conveying flow of the refrigerant is stable and continuous.
Description
Technical Field
The utility model relates to the technical field of pumps, in particular to a volute supercharging type refrigerant pump.
Background
The refrigerant pump generally pressurizes the liquid refrigerant, so as to be suitable for occasions needing to convey the refrigerant in a long distance, and links such as refrigerant conveying, gas storage tank replacement and the like on a production line are saved. The traditional refrigerant pump is mostly a gear pump, and the refrigerant is conveyed by means of working volume change and movement, but the flow of the gear pump is smaller, and the defect of instability exists in the flow.
Disclosure of Invention
In order to solve the above technical problems, the present utility model provides a volute booster-type refrigerant pump, comprising:
a volute having a volute cavity with an internal impeller;
the outer shell is provided with a liquid inlet and a liquid outlet, the inner cavity of the outer shell is divided into two parts by a volute, the liquid inlet and the liquid outlet are respectively communicated with the liquid inlet and the liquid outlet, and the volute is provided with an inner liquid inlet and an inner liquid outlet which are respectively communicated with the liquid inlet and the liquid outlet;
the motor assembly is arranged in the liquid outlet cavity, comprises an inner shell and an output shaft penetrating out of the inner shell to be connected with the impeller, the volute is provided with an opening for the output shaft to pass through, and the inner shell is attached to the volute and seals the opening.
The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.
Optionally, the outer periphery of the volute is abutted against and in sealing engagement with the inner wall of the outer housing.
Optionally, the spiral case has radial convex solid fixed ring, gu fixed ring and shell body butt just the butt department of both is equipped with the sealing washer.
Optionally, the inner liquid inlet is located at a center position of the volute, and the inner liquid outlet extends from the volute cavity to an outer edge of the volute.
Optionally, the front end of the output shaft extends to the inner liquid inlet and is provided with an impeller back cap for limiting the axial movement of the impeller.
Optionally, the impeller back cap is provided with a flow guiding part, and the flow guiding part extends to the inner liquid inlet.
Optionally, the inner housing has a cooling liquid inlet and a cooling liquid outlet respectively communicating the liquid outlet cavity and the volute cavity, and the cooling liquid outlet is coaxial with the inner liquid inlet.
Optionally, the impeller is an open impeller and is provided with a balance hole communicated with the inner liquid inlet and the cooling liquid outlet.
Optionally, the opening is provided with a convex ring, and the inner shell is provided with a step matched with the convex ring.
The internal of the shell body is divided into two parts, namely a liquid inlet cavity and a liquid outlet cavity, the refrigerant is sucked into the volute cavity through the internal liquid inlet and enters the internal liquid outlet under the action of centrifugal force of the impeller, finally, the refrigerant enters the liquid outlet cavity in a high-pressure fluid mode and is output outwards, and the mode of boosting the volute is that the refrigerant is stably boosted, so that the conveying flow of the refrigerant is stable and continuous.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the scroll casing according to the present utility model;
FIG. 3 is a cross-sectional view of the volute of the present utility model;
fig. 4 is a cross-sectional view of fig. 1.
Reference numerals in the drawings are described as follows:
1. an outer housing; 11. a liquid inlet; 12. a liquid outlet; 13. a liquid inlet cavity; 14. a liquid outlet cavity;
2. a volute; 21. a volute; 22. an impeller; 221. a balance hole; 23. an opening; 231. a convex ring; 24. an inner liquid inlet; 25. an inner liquid outlet; 26. a seal ring; 27. impeller back cap; 271. a flow guiding part; 28. a fixing ring; 29. a seal ring;
3. a motor assembly; 31. an inner housing; 311. a cooling liquid inlet; 312. a cooling liquid outlet; 313. a step; 32. an output shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, the utility model provides a volute booster-type refrigerant pump, which comprises an outer shell 1, a volute 2 and a motor component 3, wherein the motor component 3 is the input power of the refrigerant pump, the inner part of the outer shell 1 is provided with a mounting space of the volute 2, the motor component 3 and the like, and the volute booster-type refrigerant pump is used as the outermost layer of the refrigerant pump to isolate the outside and protect the outside. In addition, the refrigerant may be a liquid refrigerant as is conventional in the art.
The volute 2 is fixedly arranged in the refrigerant pump, the volute is provided with a volute cavity 21 with an impeller 22, when the impeller rotates, negative pressure is formed in the volute cavity, refrigerant is sucked into the volute cavity, flows from the center of the impeller to the periphery of the impeller along a flow passage among blades under the action of centrifugal force, and meanwhile, the refrigerant obtains energy from the rotating impeller, so that the flow speed, the pressure and the temperature of the refrigerant are greatly increased, and the stable pressurization of the refrigerant is finally realized.
The outer shell 1 is provided with a liquid inlet 11 and a liquid outlet 12, as shown in fig. 1, a refrigerant enters from the liquid inlet 11 and is output from the liquid outlet 12, the inner space of the outer shell 1 is filled with the refrigerant, the inner part of the outer shell 1 is divided into two parts by a volute, namely a liquid inlet cavity 13 and a liquid outlet cavity 14 which are respectively communicated with the liquid inlet 11 and the liquid outlet 12, the volute is provided with an inner liquid inlet 24 and an inner liquid outlet 25 which are respectively communicated with the liquid inlet cavity and the liquid outlet cavity, namely, the refrigerant enters into the liquid inlet cavity 13 from the liquid inlet 11, is sucked into the volute cavity through the inner liquid inlet, enters into the inner liquid outlet under the action of the centrifugal force of an impeller, the refrigerant is decelerated and pressurized when flowing into the inner liquid outlet, the temperature is also raised, most of kinetic energy is converted into pressure energy, the refrigerant enters into the liquid outlet cavity 14 in a form of high-pressure fluid, and finally is output from the liquid outlet 12. Therefore, the delivery flow rate of the refrigerant is stable and continuous by the way of the volute pressurization.
The motor component 3 is arranged in the liquid outlet cavity 14, and comprises an inner shell 31 and an output shaft 32 penetrating out of the inner shell to be connected with an impeller, the positions of the inner shell 31 are relatively fixed, a stator can be fixed on the inner shell, the output shaft 32 is rotationally assembled in the inner shell 31, one end of the output shaft 32 penetrates out of the inner shell and is in transmission connection with the impeller 22, the volute is provided with an opening 23 for the output shaft to pass through, the inner shell is attached to the volute and is closed, one end of the inner shell is visible to be used as a volute cavity wall to close the volute cavity, and the inner structure is more compact. In addition, a sealing ring and the like can be arranged at the position where the inner shell 31 is abutted against the volute, so that the sealing effect is ensured, and the pressurizing effect of the volute is further ensured.
In some embodiments, the outer periphery of the volute 2 is abutted against the inner wall of the outer casing 1 and is in sealing fit with the inner wall of the outer casing 1, as shown in fig. 1, the outer periphery of the volute separates the liquid inlet cavity 13 and the liquid outlet cavity 14, and the abutted part of the outer periphery of the volute and the inner wall of the outer casing is sealed, so that high-pressure refrigerant in the liquid outlet cavity is prevented from being unable to enter the liquid inlet cavity through a gap, and the output efficiency of the refrigerant is further ensured.
In some embodiments, the volute 2 has a radially protruding fixing ring 28, where the fixing ring 28 abuts against the outer casing, and a sealing ring 29 is disposed at the abutting position of the fixing ring and the outer casing, so that the fixing ring not only plays a role of fixing the volute, but also plays a role of separating the liquid outlet cavity from the liquid inlet cavity.
In some embodiments, the inner inlet 24 is located at the center of the volute, and the inner inlet also corresponds to the center of the impeller 22, so that after the refrigerant is sucked into the inner inlet, the refrigerant flows from the center of the impeller to the periphery of the impeller, and the refrigerant pressurizing process is smoother. The inner liquid outlet 25 extends from the volute cavity 21 to the outer edge of the volute, and the refrigerant is discharged from the outer edge of the volute and then enters the liquid outlet cavity, so that the inner liquid outlet can adopt a gradually-expanding flow passage, and the better diffusion effect is achieved.
In some embodiments, the front end of the output shaft 32 extends to the inner liquid inlet, and the front end of the output shaft is connected with the impeller back cap 27 in a threaded manner, so that not only the axial movement of the impeller is limited, but also the flow guiding effect is exerted, preferably, the front part of the impeller back cap is provided with the flow guiding part 271, and the flow guiding part extends to the inner liquid inlet, so that the refrigerant flows more uniformly from the center of the impeller to the periphery of the impeller.
In some embodiments, the inner housing 31 has a cooling liquid inlet 311 and a cooling liquid outlet 312 respectively connected to the liquid outlet cavity and the worm cavity, as shown in fig. 4, the cooling medium in the liquid outlet cavity can enter the motor assembly through the cooling liquid inlet to dissipate heat of the motor assembly, the cooling liquid outlet is coaxial with the inner liquid inlet, and the impeller is located between the cooling liquid outlet and the inner liquid inlet (coaxial with the cooling liquid outlet and the inner liquid inlet), so that the cooling medium at the centers of two sides can flow to the periphery and enter the gradually-expanding inner liquid outlet at the same time by rotating the impeller, and finally the cooling medium at two sides is pressurized and enters the liquid outlet cavity.
In some embodiments, the impeller 22 is an open impeller and is provided with a balancing hole 221 for communicating the inner liquid inlet and the cooling liquid outlet, so as to better balance the axial force on both sides of the impeller and ensure that the boosting effect of the volute is stable and continuous.
In some embodiments, a collar 231 is provided at the opening 23, and a step 313 is provided at one end of the inner housing to mate with the collar to facilitate assembly of the volute and inner housing. And a sealing ring 26 is arranged between the convex ring and the step, so that the sealing effect of the volute cavity is ensured, the refrigerant is prevented from flowing out of an assembly gap between the convex ring and the step, and the pressurizing effect of the volute is further ensured.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (9)
1. The spiral case booster-type refrigerant pump, its characterized in that includes:
a volute having a volute cavity with an internal impeller;
the outer shell is provided with a liquid inlet and a liquid outlet, the inner cavity of the outer shell is divided into two parts by a volute, the liquid inlet and the liquid outlet are respectively communicated with the liquid inlet and the liquid outlet, and the volute is provided with an inner liquid inlet and an inner liquid outlet which are respectively communicated with the liquid inlet and the liquid outlet;
the motor assembly is arranged in the liquid outlet cavity, comprises an inner shell and an output shaft penetrating out of the inner shell to be connected with the impeller, the volute is provided with an opening for the output shaft to pass through, and the inner shell is attached to the volute and seals the opening.
2. The volute booster-type refrigerant pump of claim 1, wherein an outer periphery of the volute abuts and is in sealing engagement with an inner wall of the outer housing.
3. The volute booster-type refrigerant pump of claim 2, wherein the volute has a radially protruding retaining ring, the retaining ring abuts the outer housing and a sealing ring is provided at the abutment of the retaining ring and the outer housing.
4. The volute booster-type refrigerant pump of claim 2, wherein the inner liquid inlet is located at a center position of the volute, and the inner liquid outlet extends from the volute cavity to an outer edge of the volute.
5. The turbocharged refrigerant pump of claim 4, wherein the front end of the output shaft extends to the inner liquid inlet and has an impeller back cap that limits axial movement of the impeller.
6. The turbocharged refrigerant pump of claim 5, wherein the impeller back cap is provided with a flow guide portion and the flow guide portion extends to the inner liquid inlet.
7. The turbocharged refrigerant pump of claim 4, wherein the inner housing has a coolant inlet and a coolant outlet in communication with the liquid outlet and the volute, respectively, the coolant outlet being coaxial with the inner inlet.
8. The turbocharged refrigerant pump of claim 7, wherein the impeller is an open impeller and is provided with a balance hole communicating the inner liquid inlet and the cooling liquid outlet.
9. The turbocharged refrigerant pump of claim 1, wherein a collar is provided at the opening, and the inner housing has a step that mates with the collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320660580.1U CN219827170U (en) | 2023-03-29 | 2023-03-29 | Volute booster-type refrigerant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320660580.1U CN219827170U (en) | 2023-03-29 | 2023-03-29 | Volute booster-type refrigerant pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827170U true CN219827170U (en) | 2023-10-13 |
Family
ID=88285680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320660580.1U Active CN219827170U (en) | 2023-03-29 | 2023-03-29 | Volute booster-type refrigerant pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827170U (en) |
-
2023
- 2023-03-29 CN CN202320660580.1U patent/CN219827170U/en active Active
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