CN213331510U

CN213331510U - Vertical refrigerant pump with supercharging effect

Info

Publication number: CN213331510U
Application number: CN202021852593.1U
Authority: CN
Inventors: 梁钧; 胡加兴
Original assignee: Shanghai Hushi Refrigeration Equipment Technology Co ltd
Current assignee: Shanghai Fuhuite Pump Manufacturing Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-01
Anticipated expiration: 2030-08-31

Abstract

The application discloses a vertical refrigerant pump with a supercharging effect, which comprises a shell, wherein a gear pump head and a driving assembly for driving the gear pump head to operate are arranged in the shell; a pressurizing cavity enclosed by the base is arranged below the end plate, and one side of the pressurizing cavity corresponding to the end plate is a flow guide surface; set up the pump inlet who is linked together with the inside of gear pump head on the end plate, the inlet is seted up in the lateral wall of base and is communicated with the pressure boost chamber, and this scheme is for prior art, and after the refrigerant entered into the pressure boost intracavity by the inlet, because the space in pressure boost chamber reduces gradually, the refrigerant when flowing through the pressure boost chamber, the pressure boost chamber was to the refrigerant pressure boost gradually to make the refrigerant advance the pressure boost before getting into the gear pump head, in order to improve vertical refrigerant pump's pressure boost effect.

Description

Vertical refrigerant pump with supercharging effect

Technical Field

The application relates to the field of refrigerant pump equipment, in particular to a vertical refrigerant pump with a supercharging effect.

Background

The existing heat pipe system mostly adopts a common liquid pump to convey the liquid refrigerant, and even the liquid refrigerant is directly circulated by directly utilizing the height and the drop without using the liquid pump. However, the liquid pump is not used, the flowing effect of the refrigerant is not good, the heat exchange efficiency of the system is affected, the common liquid pump is used, the cost is high, the efficiency of the common liquid pump is low, and the sealing effect is not good. In the field of refrigeration, refrigerant drive devices have been developed, which are used to pressurize a refrigerant in a liquid state.

For example, prior art discloses a vertical refrigerant pump, vertical refrigerant pump is vertical when using and places, vertical refrigerant pump includes the casing, install the gear pump head in the casing, and the drive assembly of this gear pump head operation of drive, the casing is including the top cap that from top to bottom docks in proper order, barrel and base, the inlet with the inside intercommunication of casing is seted up to the base, the liquid outlet with the inside intercommunication of casing is seted up to the top cap, drive assembly is including being fixed in the motor case in the casing, the main shaft and the main shaft that run through the motor case extend downwards the motor case and with gear pump head drive fit.

The inventor finds that the refrigerant in the prior art is pressurized only through the gear pump head, so that the pressurizing effect is poor, and the refrigerant pressurizing device has an improvement space.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a vertical refrigerant pump with a supercharging effect, which comprises a shell, wherein the shell comprises a top cover, a cylinder and a base which are sequentially butted from top to bottom, the base is provided with a liquid inlet communicated with the interior of the shell, and the top cover is provided with a liquid outlet communicated with the interior of the shell;

the gear pump is characterized in that an end plate is fixed on one side of the base, which faces the inside of the motor box, the gear pump head is fixed on the end plate, and the driving assembly is fixed on the gear pump head;

a pressurizing cavity enclosed by the base is arranged below the end plate, and one side of the pressurizing cavity corresponding to the end plate is a flow guide surface;

the end plate is provided with a pump inlet communicated with the interior of the gear pump head, the liquid inlet is formed in the side wall of the base and communicated with the pressurizing cavity, and the pump inlet is positioned on one side, far away from the liquid inlet, of the pressurizing cavity;

the flow guide surface is a plane, and the distance between the flow guide surface and the end plate is gradually reduced from the liquid inlet to the pump inlet.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the cross section of the pressurizing cavity is circular, the diameter of the pressurizing cavity is D1, and the liquid inlet points to the circle center of the circle.

Optionally, the housing is generally cylindrical and has a diameter D2, and satisfies D1: d2 ═ 1: 1.2 to 2.

Optionally, the inclination angle of the flow guide surface is 3-15 degrees relative to the end plate.

Optionally, the junction of the flow guide surface and the liquid inlet is in equal-height transition.

Optionally, the driving assembly includes:

the motor box is fixed on the gear pump head, a flow guide hole is formed in the peripheral wall of the motor box, and an overflowing gap is reserved between the periphery of the motor box and the inner wall of the shell;

the main shaft penetrates through the motor box and is vertically arranged, and the main shaft extends downwards out of the motor box and is matched with the gear pump head in a transmission manner;

the rotor is positioned in the motor box and fixed on the main shaft;

the stator is integrated with the inner peripheral wall of the motor box and matched with the rotor;

the liquid inlet is sequentially communicated with the pressurizing cavity, the gear pump head, the interior of the motor box, the flow guide holes and the overflowing gap until the liquid outlet forms a refrigerant flow channel.

Optionally, the motor case includes:

the bottom wall is fixed with the gear pump head, and an outlet of the pump communicated with the inside of the gear pump head is formed in the bottom wall;

a top wall above the bottom wall;

a plurality of tension rods tensioned between the top and bottom walls;

and the side wall is positioned between the bottom wall and the top wall and extends along the circumferential direction, and the diversion hole is formed in the side wall.

Optionally, the flow guide holes are divided into two groups, one side of each flow guide hole is close to the top wall, the other group of flow guide holes is close to the bottom wall, and the flow guide holes in the same group are circumferentially distributed at intervals.

Optionally, the minimum radial dimension of the flow gap is not less than 5 mm.

Optionally, a first annular settling zone and a second annular settling zone are arranged on the outer wall of the base, the first annular settling zone and the second annular settling zone are distributed around the liquid inlet, and the vertical refrigerant pump further comprises pipe joints fixedly butted to the annular settling zones.

The utility model provides a vertical refrigerant pump with pressure boost effect, the refrigerant enters into behind the pressure boost intracavity by the inlet, because the space in pressure boost chamber reduces gradually, the refrigerant when flowing through the pressure boost chamber, the pressure boost chamber is in order to carry out the pressure boost to the refrigerant gradually to make the refrigerant advance the pressure boost before getting into the gear pump head, in order to improve vertical refrigerant pump's pressure boost effect.

Drawings

Fig. 1 is a schematic structural diagram of a vertical refrigerant pump according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic structural view of the sidewall in fig. 1.

The reference numerals in the figures are illustrated as follows:

100. a vertical refrigerant pump;

10. a housing; 12. a barrel; 13. a top cover; 14. a base; 141. a support table; 142. a pressurizing cavity; 143. a flow guide surface; 15. a liquid outlet; 16. a liquid inlet; 17. an over-current gap; 18. a pipe joint;

20. a drive assembly; 21. a motor case; 211. a top wall; 212. a bottom wall; 213. a side wall; 214. a pull rod; 215. a flow guide hole; 22. a main shaft; 23. a rotor; 24. a stator;

30. a gear pump head; 31. fixing a sleeve; 32. a gear pair; 33. an end cap; 34. a pump inlet; 35. an outlet of the pump; 36. a screw; 37. a seal member;

40. an end plate;

50. a junction box; 51. and a terminal.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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 a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components 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 application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, as shown in fig. 1 to 3, a vertical refrigerant pump 100 with a pressurization effect includes a housing 10, the housing 10 includes a top cover 13, a cylinder 12 and a base 14, which are sequentially butted from top to bottom, the base 14 is provided with a liquid inlet 16 communicated with the inside of the housing 10, and the top cover 13 is provided with a liquid outlet 15 communicated with the inside of the housing 10;

the gear pump head 30 and the driving assembly 20 for driving the gear pump head 30 to operate are installed in the housing 10, and the gear pump head 30 is fixed on the end plate 40, the driving assembly 20 is fixed on the gear pump head 30, and the end plate 40 can support the motor box 21 and the gear pump head 30.

A pressurizing cavity 142 defined by the base 14 is arranged below the end plate 40, and one side of the pressurizing cavity 142 corresponding to the end plate 40 is a flow guide surface 143;

the end plate 40 is provided with a pump inlet 34 communicated with the interior of the gear pump head 30, the liquid inlet 16 is arranged on the side wall 213 of the base 14 and communicated with the pressurizing cavity 142, and the pump inlet 34 is arranged on one side of the pressurizing cavity 142 far away from the liquid inlet 16;

the guiding surface 143 is a plane, and the distance between the guiding surface 143 and the end plate 40 gradually decreases from the liquid inlet 16 to the pump inlet 34.

After the refrigerant enters the pressurizing cavity 142 from the liquid inlet 16, because the space of the pressurizing cavity 142 is gradually reduced, when the refrigerant flows through the pressurizing cavity 142, the pressurizing cavity 142 gradually pressurizes the refrigerant, so that the refrigerant is pre-pressurized before entering the gear pump head 30, and the pressurizing effect of the vertical refrigerant pump 100 is improved.

In another embodiment, as shown in fig. 1, a supporting base 141 is provided on the top surface of the base 14, the end plate 40 is fixed on the supporting base 141, and the supporting base 141 enlarges the installation surface of the base 14, so that the supporting base 141 can stably support the end plate 40, and the difficulty of installing the end plate 40 on the base 14 can be reduced.

The top side of the pressurizing chamber 142 is open, and the end plate 40 covers the top side of the liquid inlet chamber. The cross-section of the inlet chamber is circular in the axial direction of the main shaft 22, and the corresponding end cap 33 is circular.

In order to fix the relative position between the end plate 40 and the support platform 141, referring to an embodiment, as shown in fig. 1 and 3, the support platform 141 and the end plate 40 are fixed by screws 36, the end plate 40 has through holes, the support platform 141 has screw holes corresponding to the through holes, and the screws 36 sequentially pass through the through holes and the screw holes and are in threaded connection with the screw holes, so as to fix the end plate 40 on the support platform 141.

The sealing element 37 is arranged between the supporting platform 141 and the end plate 40, and the sealing element 37 encloses the pressure increasing cavity 142, so that the refrigerant in the pressure increasing cavity 142 can be prevented from directly entering between the motor box 21 and the shell 10 from the joint of the supporting platform 141 and the end plate 40, and the refrigerant can not be pressurized by the vertical refrigerant pump.

One of the top surface of the support table 141 and the bottom surface of the end plate 40 is formed with a groove, and the seal member 37 is fitted in the groove.

In another embodiment, as shown in fig. 1, a terminal box 50 is disposed on the top of the top cover 13, and a terminal 51 connected to the driving assembly 20 is disposed in the terminal box 50. The output end of the connection terminal 51 is connected to the driving assembly 20 via a wire, and the input end is connected to a power generation device (not shown) via a wire, wherein the power generation device is a generator.

In another embodiment, as shown in fig. 1, in order to make the structure of the vertical refrigerant pump more compact, the liquid inlet 16 and the liquid outlet 15 are respectively located at two axial sides of the cylinder 12.

In order to stably pressurize the refrigerant and to make the refrigerant pump 100 more compact, in one embodiment, the cross section of the pressurizing cavity 142 is circular and has a diameter D1, and the liquid inlet 16 is directed to the center of the circle.

In another embodiment, the housing 10 is generally cylindrical and has a diameter D2, and satisfies D1: d2 ═ 1: 1.2 to 2. D1: when the value D2 is larger, the length of the flow path of the refrigerant in the pumping cavity 142 becomes smaller, so that the pumping effect of the refrigerant in the pumping cavity 142 is not obvious.

Preferably, D1: d2 ═ 1: 1.2 to 1.5.

In another embodiment, the angle of the deflector surface 143 is 3 to 15 degrees with respect to the end plate 40.

Preferably, the inclination angle of the deflector surface 143 is 5 to 10 degrees with respect to the end plate 40.

In another embodiment, the intersection of the flow guiding surface 143 and the liquid inlet 16 has a uniform height, so as to stably pressurize the refrigerant.

In another embodiment, as shown in fig. 1 and 3, the driving assembly 20 includes:

a motor box 21 fixed on the gear pump head 30, wherein a diversion hole 215 is arranged on the peripheral wall of the motor box 21, and an overflow gap 17 is reserved between the periphery of the motor box 21 and the inner wall of the shell 10;

a spindle 22 penetrating through the motor box 21 and standing, wherein the spindle 22 extends downwards out of the motor box 21 and is in transmission fit with the gear pump head 30;

a rotor 23 located in the motor case 21 and fixed to the main shaft 22;

a stator 24 integrated with the inner peripheral wall of the motor case 21 and matched with the rotor 23;

the refrigerant channel is formed by the liquid inlet 16, the pressurizing cavity 142, the gear pump head 30, the interior of the motor box 21, the flow guide hole 215, the overflowing gap 17 and the liquid outlet 15 in sequence.

The setting of overflowing clearance 17 can avoid motor case 21 to contact with the inner wall of casing 10, can reduce the vibration power transmission to casing 10 of main shaft 22 rotation in-process's production to reduce vertical refrigerant pump and produce the vibration, can play the effect that vertical refrigerant pump operation is stable.

In another embodiment, as shown in fig. 1, the motor case 21 includes a bottom wall 212, a top wall 211, a side wall 213 and a plurality of pull rods 214, the bottom wall 212 is fixed to the gear pump head 30, the top wall 211 is located above the bottom wall 212, the plurality of pull rods 214 are tightened between the top wall 211 and the bottom wall 212, the side wall 213 is located between the bottom wall 212 and the top wall 211 and extends along the circumferential direction, wherein the diversion hole 215 is opened in the side wall 213, and the pull rods 214 can pull the top wall 211 and the bottom wall 212 to abut against the side wall 213 one by one, respectively, so as to assemble the motor case 21 quickly.

The side wall 213 is cylindrical, and the axis of the side wall 213 substantially coincides with the axis of the cylinder 12. The top wall 211 and the bottom wall 212 are respectively disposed at two axial ends of the side wall 213. The tie rods 214 are circumferentially spaced around the side wall 213 and are located either inside the side wall 213 or outside the side wall 213.

The side wall 213 of one end of the tie rod 214 is provided with an external thread and the other end is provided with a head. One of the top wall 211 and the bottom wall 212 is formed with a through hole, the other is formed with a threaded hole, and the end of the pull rod 214 with the external thread passes through the through hole and is in threaded connection with the threaded hole.

Preferably, the pull rods 214 are uniformly arranged around the circumferential direction of the side wall 213 at intervals, the pull rods 214 are located in the side wall 213, and the stator 24 is provided with through holes for the pull rods 214 to pass through.

The rotor 23 and the stator 24 can affect the flow of the refrigerant, and in order to enable the refrigerant to stably enter the overflow gap 17 from the motor box 21, referring to an embodiment, as shown in fig. 3, two sets of the flow guide holes 215 are provided, one side of each set of the flow guide holes is close to the top wall 211, the other set of the flow guide holes is close to the bottom wall 212, the flow guide holes 215 in the same set are circumferentially distributed at intervals, wherein a channel between the flow guide hole 215 close to the bottom wall 212 and the liquid inlet 16 is configured to avoid the rotor 23 and the stator 24.

Referring to an embodiment, as shown in fig. 1 and 2, the gear pump head 30 includes an end cover 33, a fixing sleeve 31, and a gear pair 32, the fixing sleeve 31 is located between the end cover 33 and the bottom wall 212, the end cover 33, and the fixing sleeve 31 surround to form a gear box, the gear pair 32 is located in the gear box, and the main shaft 22 extends into the gear box and is linked with the gear pair 32.

In order to save material and reduce the number of steps for mounting the vertical refrigerant pump, the end plate 40 and the end cover 33 are integrally provided, i.e., the end plate 40 and the end cover 33 are the same component.

In the form of communication between the liquid inlet 16 and the motor case 21, referring to an embodiment, as shown in fig. 2, a pump inlet 34 communicated with the inside of the gear pump head 30 is formed on the end plate 40, and a pump outlet 35 communicated with the inside of the gear pump head 30 is formed on the bottom wall 212.

When the main shaft 22 rotates, the main shaft 22 drives the gear pair 32 to rotate, so that the refrigerant is introduced into the gear box from the pump inlet 34, then is led out from the pump outlet 35 to enter the motor box 21, and finally is conveyed to the liquid outlet 15 through the flow guide holes 215 on the motor box 21 and is discharged from the liquid outlet 15, thereby completing a pressurization process of the pump.

To facilitate assembly of the gearbox, the retaining sleeve 31 and the end cap 33 are fixed to the bottom wall 212 of the motor casing 21 either indirectly or directly by means of locating pins or screws 36. The main shaft 22 and the gear pair 32 are connected by a key to increase the tightness of the connection between the main shaft 22 and the gear pair 32.

In another embodiment, the minimum radial dimension of the flow gap 17 is not less than 5 mm. If the flow gap 17 is too small, it may happen that the motor case 21 hits the inner wall of the housing 10 during vibration, causing deformation of the housing 10.

Meanwhile, the minimum radial dimension of the overflowing gap 17 is too small, so that the refrigerant is locally pressurized, and the shell 10 or the motor box 21 is locally deformed due to high pressure intensity; an excessive minimum radial dimension of the flow passage gap 17 results in an increased size of the coolant pump.

Preferably, the minimum radial dimension of the flow gap 17 is 5mm-10 mm.

In another embodiment, as shown in fig. 1, a first annular settling zone is disposed around the liquid inlet 16 and a second annular settling zone is disposed around the liquid outlet 15 at the outer wall of the base 14, and the vertical refrigerant pump further includes a pipe joint 18 fixedly butted to each annular settling zone.

The first annular settling zone and the second annular settling zone are of a groove structure, and each pipe joint 18 is fixed in a welding mode when being installed in each corresponding annular settling zone. A first pipe connection 18 communicates with the liquid inlet 16 and a second pipe connection 18 communicates with the liquid outlet 15. The pipe joints 18 are arranged to facilitate communication with the vertical coolant pump and an external pipeline.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. The vertical refrigerant pump with the supercharging effect comprises a shell, wherein the shell comprises a top cover, a barrel and a base which are sequentially butted from top to bottom, the base is provided with a liquid inlet communicated with the interior of the shell, and the top cover is provided with a liquid outlet communicated with the interior of the shell;

2. The vertical refrigerant pump as claimed in claim 1, wherein the pumping chamber has a circular cross section and a diameter D1, and the liquid inlet is directed to a center of the circular cross section.

3. The vertical refrigerant pump as claimed in claim 2, wherein the casing is generally cylindrical and has a diameter D2, and satisfies D1: d2 ═ 1: 1.2 to 2.

4. The vertical refrigerant pump as claimed in claim 1, wherein the inclination angle of the baffle plane is 3 to 15 degrees with respect to the end plate.

5. The vertical refrigerant pump as claimed in claim 1, wherein the junction between the guide surface and the liquid inlet is in equal height transition.

6. The vertical refrigerant pump as claimed in claim 1, wherein the driving assembly comprises:

the rotor is positioned in the motor box and fixed on the main shaft;

7. The vertical refrigerant pump as claimed in claim 6, wherein the motor casing comprises:

a top wall above the bottom wall;

a plurality of tension rods tensioned between the top and bottom walls;

8. The vertical refrigerant pump as claimed in claim 7, wherein the guide holes are divided into two groups, one of the two groups being adjacent to the top wall and the other group being adjacent to the bottom wall, the guide holes of the two groups being circumferentially spaced apart.

9. The vertical refrigerant pump as claimed in claim 6, wherein the minimum radial dimension of the flow gap is not less than 5 mm.

10. The vertical refrigerant pump as claimed in claim 1, wherein a first annular settling zone is disposed around the liquid inlet and a second annular settling zone is disposed around the liquid outlet at an outer wall of the base, and the vertical refrigerant pump further comprises a pipe joint fixedly butted to each annular settling zone.