CN113394901A - Refrigerant pump and motor assembly thereof - Google Patents

Refrigerant pump and motor assembly thereof Download PDF

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Publication number
CN113394901A
CN113394901A CN202010168444.1A CN202010168444A CN113394901A CN 113394901 A CN113394901 A CN 113394901A CN 202010168444 A CN202010168444 A CN 202010168444A CN 113394901 A CN113394901 A CN 113394901A
Authority
CN
China
Prior art keywords
motor
bearing
refrigerant
bearing bracket
housing
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.)
Pending
Application number
CN202010168444.1A
Other languages
Chinese (zh)
Inventor
周易
石刚意
刘君
朱文杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Highly Electrical Appliances Co Ltd
Original Assignee
Shanghai Highly Electrical Appliances Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Highly Electrical Appliances Co Ltd filed Critical Shanghai Highly Electrical Appliances Co Ltd
Priority to CN202010168444.1A priority Critical patent/CN113394901A/en
Publication of CN113394901A publication Critical patent/CN113394901A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a refrigerant pump and a motor assembly thereof, wherein the refrigerant pump comprises: a first housing; the second shell is connected to the first end of the first shell in a sealing mode; the wiring shell cover is hermetically connected to the second end of the first shell in the axial direction; the motor assembly comprises a motor, a first bearing bracket and a second bearing bracket; the first bearing support and the second bearing support are coaxially and relatively fixed in the shell; the first bearing bracket is formed with a first accommodating cavity which is opened towards the second bearing bracket, and the second bearing bracket is formed with a second accommodating cavity which is opened towards the first bearing bracket; the two ends of the motor respectively extend into the first accommodating cavity and the second accommodating cavity, and the side wall of the motor is partially coated and fixed by the first bearing support and the second bearing support. The invention can simplify the assembly process of the motor and avoid the influence on the performance of the motor caused by the problem of the assembly process.

Description

Refrigerant pump and motor assembly thereof
Technical Field
The invention relates to the field of refrigeration equipment, in particular to a refrigerant pump and a motor assembly thereof.
Background
In the prior art, the normal operation of a refrigerant pump needs to be driven by a motor. For a refrigerant pump, such as a closed fluid machine, an interference fit is usually provided between the stator and the housing of the motor, and the stator is usually placed in the housing by means of a shrink fit or cold pressing. When the jacket is heated, the shell expands due to heating, so that the fit clearance is increased. However, if the heat is not uniform, the expansion and deformation of the housing are different, and the cooling is accompanied by a pressing force. The way of cold pressing the motor stator is subject to a larger extrusion force, which has a bad influence on the iron loss of the motor. Due to the existence of extrusion force, the inner circular surface of the motor stator deforms, so that the roundness of the inner circular surface is poor, the noise is influenced when the motor runs, and the performance of the motor is influenced. In addition, after the motor stator hot jacket is assembled, the stator hot jacket can not be forcedly extruded secondarily and assembled or reused, if stator lamination can be damaged by forcedly extruding, friction between the stator and the shell in interference fit is large, and extrusion force applied to the lamination can be larger by forcedly extruding, so that great influence is caused on the performance of the motor, the waste of motor assembly products is caused, and the operation cost of enterprises is increased.
In a utility model named "a totally-enclosed vane type novel refrigerant pump" (application number: 201420769830.6), a motor is fixed in a pump body through a motor bracket. As will be understood by those skilled in the art from the disclosure, the motor and the motor bracket are necessarily fixed by cold pressing or hot sleeving, and the motor bracket needs to be fixed to the front end cover and the rear end cover respectively, which undoubtedly increases the difficulty of the assembly process and may adversely affect the performance of the motor compared with the prior art.
Disclosure of Invention
The present invention is directed to a refrigerant pump and a motor assembly thereof, which are provided to simplify an assembly process of a motor and avoid the performance of the motor from being affected by the assembly process.
To achieve the above object, according to an aspect of the present invention, there is provided a refrigerant pump including:
a first housing;
the second shell is connected to the first end of the first shell in a sealing mode;
the wiring shell cover is hermetically connected to the second end of the first shell in the axial direction;
the motor assembly comprises a motor, a first bearing bracket and a second bearing bracket; the first bearing support and the second bearing support are coaxially and relatively fixed in the shell; the first bearing bracket is formed with a first accommodating cavity which is opened towards the second bearing bracket, and the second bearing bracket is formed with a second accommodating cavity which is opened towards the first bearing bracket; two ends of the motor respectively extend into the first accommodating cavity and the second accommodating cavity, and the side wall of the motor is partially covered and fixed by the first bearing support and the second bearing support;
a drive shaft in interference fit with a rotor of the motor; a first bearing and a second bearing are respectively arranged on the first bearing bracket and the second bearing bracket; a first end of the drive shaft is connected to the first bearing, and a second end of the drive shaft is connected to the second bearing; and
an impeller rotatably disposed in the second housing and connected to the first end of the drive shaft.
In an embodiment of the present invention, one end of the second housing facing the first housing is provided with a first internal shoulder, and a second end of the first housing in the axial direction is provided with a second internal shoulder; the first inner shoulder is attached to the end face of the first bearing support, and the second inner shoulder is attached to the end face of the second bearing support, so that the motor assembly is prevented from generating axial displacement in the shell.
In an embodiment of the present invention, the first bearing bracket and the second bearing bracket are fixedly connected by a connecting member.
In an embodiment of the invention, the outer wall of the bearing support is in interference fit with the inner wall of the first housing.
In an embodiment of the present invention, the first bearing support is provided with a plurality of first refrigerant through holes, and the second housing is communicated with the accommodating cavity through the first refrigerant through holes.
In an embodiment of the present invention, a plurality of second refrigerant through holes are formed in the second bearing bracket, and the accommodating cavity is communicated with a space between the terminal housing cover and the second bearing bracket through the second refrigerant through holes.
In an embodiment of the invention, the second housing has a refrigerant inlet and a refrigerant outlet, and the refrigerant flows into the refrigerant pump from the refrigerant inlet and flows out only from the refrigerant outlet.
In an embodiment of the present invention, an impeller abutting portion communicated with the refrigerant inlet is disposed in the second housing, and the impeller is rotatably connected to the impeller abutting portion.
In one embodiment of the invention, the connection housing cover is provided with a sealing terminal, and the motor is connected to the sealing terminal through a lead wire.
According to another aspect of the present invention, there is provided a motor assembly, comprising a motor, a first bearing bracket and a second bearing bracket; the first bearing support and the second bearing support are coaxially and relatively fixed; the first bearing bracket is formed with a first accommodating cavity which is opened towards the second bearing bracket, and the second bearing bracket is formed with a second accommodating cavity which is opened towards the first bearing bracket; the two ends of the motor respectively extend into the first accommodating cavity and the second accommodating cavity, and the side wall of the motor is partially coated and fixed by the first bearing support and the second bearing support.
The invention can avoid the direct contact of the motor and the shell during the installation, simplify the assembly process of the motor, further avoid the adverse effect on the motor caused by the extrusion of the stator by the shell due to the traditional shrink-fit process, and ensure the service performance of the motor. In addition, the motor is fixedly installed through the first bearing support and the second bearing support, the motor is convenient and quick to disassemble, assemble and replace, the motor is suitable for large-scale industrial production, and the installation and use cost of the motor can be reduced.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
Fig. 1 is a perspective view of a refrigerant pump in an embodiment of the present invention.
Fig. 2 is a sectional view of the refrigerant pump shown in fig. 1.
Fig. 3 is a schematic structural view of the refrigerant pump motor assembly shown in fig. 1.
Fig. 4 is a schematic view of the connection of the first housing and the second housing in the refrigerant pump of fig. 1.
Fig. 5 is a structural schematic view of a second bearing bracket in the refrigerant pump of fig. 1.
Fig. 6 is a schematic view of a first angle of a second housing in the refrigerant pump of fig. 1.
Fig. 7 is a schematic view of a second angle of the second housing in the refrigerant pump of fig. 1.
Fig. 8 is a schematic view of a first angle of a cover of a wire connection housing in the refrigerant pump of fig. 1. And
fig. 9 is a schematic view of a second angle of a cover of a wire connection housing in the refrigerant pump of fig. 1.
Reference numerals
1 Wiring casing cover
101 sealed terminal
102 steel needle
2 second housing
21 first inner shoulder
201 impeller butt joint part
202 refrigerant inlet
203 refrigerant outlet
3 first casing
31 second inner shoulder
4 stator
5 rotor
6 first bearing bracket
61 first accommodation chamber
62 first bearing mounting hole
63 first refrigerant through hole
64 first bearing
7 second bearing bracket
74 second bearing
8 drive shaft
9 impeller
10 support structure
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a perspective view of a refrigerant pump in an embodiment of the present invention. Fig. 2 is a sectional view of the refrigerant pump shown in fig. 1. Fig. 3 is a schematic structural view of the refrigerant pump motor assembly shown in fig. 1. Fig. 4 is a structural schematic view of a second bearing bracket in the refrigerant pump of fig. 1. Fig. 5 is a schematic view showing the connection of the first casing 3 and the second casing in the refrigerant pump of fig. 1. Fig. 6 is a schematic view of a first angle of a second housing in the refrigerant pump of fig. 1. Fig. 7 is a schematic view of a second angle of the second housing in the refrigerant pump of fig. 1. Fig. 8 is a schematic view of a first angle of a cover of a wire connection housing in the refrigerant pump of fig. 1. And FIG. 9 is a schematic view of a second angle of a cover of the wire connection housing of the refrigerant pump of FIG. 1. According to an aspect of the present invention, there is provided a refrigerant pump, as shown in fig. 1 to 3, comprising: first casing 3, second casing 2, wiring cap 1, motor element and drive shaft 8. The second shell 2 is connected with the first end of the first shell 3 in a sealing mode; the wiring shell cover 1 is hermetically connected to the second end of the first shell 3 in the axial direction; the motor assembly comprises a motor, a first bearing support 6 and a second bearing support 7, wherein the motor can be a variable frequency motor and comprises a rotor 5 and a stator 4. The first bearing bracket 6 and the second bearing bracket 7 are coaxially and oppositely fixed in the first shell 3 and the second shell; the first bearing bracket 6 is formed with a first accommodation chamber 61 that opens toward the second bearing bracket 7, and the second bearing bracket 7 is formed with a second accommodation chamber that opens toward the first bearing bracket 6; two ends of the motor respectively extend into the first accommodating cavity 61 and the second accommodating cavity, and the side wall of the motor is partially covered and fixed by the first bearing support 6 and the second bearing support 7; the driving shaft 8 is in interference fit with the rotor 5 of the motor; a first bearing 64 and a second bearing 74 are respectively arranged on the first bearing bracket 6 and the second bearing bracket 7; a first end of the drive shaft 8 is connected to the first bearing 64 and a second end of the drive shaft 8 is connected to the second bearing 74; the impeller 9 is rotatably provided in the second housing 2 and connected to a first end of the drive shaft 8.
The invention can avoid the direct contact of the motor and the shell during the installation, simplify the assembly process of the motor, further avoid the adverse effect on the motor caused by the extrusion of the stator by the shell due to the traditional shrink-fit process, and ensure the service performance of the motor. In addition, the motor is fixedly installed through the first bearing support and the second bearing support, the motor is convenient and quick to disassemble, assemble and replace, the motor is suitable for large-scale industrial production, and the installation and use cost of the motor can be reduced. Moreover, the refrigerant pump provided by the invention can meet the transmission requirement of the refrigeration air-conditioning field on the refrigerant, and has continuous, stable and reliable operation capability. First, in the present invention, two ends of the first casing 3 are hermetically connected to the wiring casing cover 1 and the second casing 2, respectively, so that the refrigerant can be effectively prevented from leaking compared to the pump used in the conventional refrigeration air-conditioning field. Secondly, the motor is fixed in the shell through the first bearing support 6 and the second bearing support 7, coaxiality of the motor and the shell can be guaranteed, and reliability is high. In addition, the refrigerant inlet and the refrigerant outlet are both arranged on the second shell 2, so that the refrigeration efficiency of the air-conditioning system is improved. Finally, the drive shaft 8, the first bearing and the second bearing 74 are lubricated directly by the refrigerant, so that the adverse effect of lubricating oil on the heat exchange of the air conditioning system can be avoided.
As shown in fig. 4, in an embodiment of the present invention, one end of the second housing 2 facing the first housing 3 is provided with a first internal shoulder 21, and a second end of the first housing 3 in the axial direction is provided with a second internal shoulder 31; the first inner shoulder 21 is attached to the end face of the first bearing bracket 6, and the second inner shoulder 31 is attached to the end face of the second bearing bracket 7. Thereby preventing axial displacement of the motor assembly within the housing. Optionally, the outer wall of the bearing support is in interference fit with the inner wall of the first shell 3, so that the motor can be prevented from generating radial displacement in the first shell 3 and the second shell 2, the motor is prevented from being in direct contact with the shells when being installed, and further, adverse effects on the motor caused by the fact that the shells extrude the stator 4 due to a traditional shrink fit process are avoided, and the use performance of the motor is ensured.
Optionally, the first bearing bracket 6 and the second bearing bracket 7 are fixedly connected through a connecting member. Further, the connecting piece can be a pull rod or a bolt.
As shown in fig. 2 and 5, a plurality of first refrigerant through holes are formed in the first bearing support 6, and the second housing 2 is communicated with the motor fixing cavity through the first refrigerant through holes. And part of the refrigerant in the second shell 2 flows into the motor fixing cavity through the first refrigerant through hole, so that the motor can be cooled. The bearing can also adopt an oilless bearing, and the refrigerant flowing into the motor fixing cavity replaces lubricating oil to play a role in lubrication, so that adverse effects on the heat exchange of the air conditioning system due to the use of the lubricating oil are avoided. Optionally, a plurality of first refrigerant through holes are formed in the first bearing support 6, and the plurality of first refrigerant through holes are uniformly distributed on the first bearing support 6, so that the refrigerant can be promoted to flow in the first housing 3 in a circulating manner. Furthermore, a plurality of second refrigerant through holes are formed in the second bearing support 7, and the motor fixing cavity is communicated with a space between the wiring shell cover 1 and the second bearing support 7 through the second refrigerant through holes. The refrigerant in the motor fixing cavity flows to the wiring shell cover 1 through the second refrigerant through hole, so that the flowing space of the refrigerant is further enlarged practically, and the high-pressure resistance of the pump is improved. Optionally, a plurality of second refrigerant through holes are formed in the second bearing support 7, and the second refrigerant through holes are uniformly distributed on the second bearing support 7. This can further promote the circulation of the refrigerant in the entire refrigerant pump.
Referring to fig. 1 to 8, in the refrigerant pump of the present invention, the second casing 2 is provided with a refrigerant inlet 202 and a refrigerant outlet 203, and the refrigerant flows into the refrigerant pump from the refrigerant inlet 202 and flows out only from the refrigerant outlet 203. The refrigerant inlet 202 and the refrigerant outlet 203 are both arranged on the second casing 2, which is beneficial to improving the refrigeration efficiency of the air conditioning system.
As shown in fig. 7, an impeller abutting portion 201 communicating with the refrigerant inlet 202 is disposed in the second housing 2, and the impeller 10 is rotatably connected to the impeller abutting portion 201. Whereby the transfer efficiency of the refrigerant can be improved.
As shown in fig. 1, a sealing terminal 101 is provided on the terminal cover 1, and the motor is connected to the sealing terminal 101 through a lead. Further, as shown in fig. 1, 7 and 8, the terminal cover 1 may be integrally formed with the hermetic terminal 101. Of course, the terminal housing cover 1 can also be welded to the sealing terminal 101. As long as the two can be hermetically connected. The sealed wiring terminal 101 is provided with a steel needle 102, and two ends of the steel needle 102 are used for connecting a lead wire to connect a motor and an external power supply. The steel pin 102 is integrally formed with the sealing post 101, so that leakage of refrigerant therefrom can be prevented.
Further, a plurality of support structures 10 may be disposed outside the first housing 3. The provision of the support structure 10 facilitates the fixing of the pump.
The invention can avoid the direct contact of the motor and the shell during the installation, simplify the assembly process of the motor, further avoid the adverse effect on the motor caused by the extrusion of the stator by the shell due to the traditional shrink-fit process, and ensure the service performance of the motor. In addition, the motor is fixedly installed through the first bearing support and the second bearing support, the motor is convenient and quick to disassemble, assemble and replace, the motor is suitable for large-scale industrial production, and the installation and use cost of the motor can be reduced. Moreover, the refrigerant pump provided by the invention can meet the transmission requirement of the refrigeration air-conditioning field on the refrigerant, and has continuous, stable and reliable operation capability. First, two ends of the first shell are respectively connected with the wiring shell cover and the second shell in a sealing mode, and compared with a pump used in the field of existing refrigeration air conditioners, the refrigerating fluid can be effectively prevented from leaking. And secondly, the motor is fixed in the shell through the first bearing support and the second bearing support, so that the coaxiality of the motor and the shell can be ensured, and the reliability is high. And the refrigerant inlet and the refrigerant outlet are arranged on the second shell, so that the refrigeration efficiency of the air-conditioning system is improved. Finally, the driving shaft, the first bearing and the second bearing are directly lubricated by the refrigerant, so that the adverse effect on the heat exchange of the air conditioning system caused by using lubricating oil can be avoided.
According to another aspect of the present invention, there is provided a motor assembly comprising a motor, a first bearing support 6 and a second bearing support 7; the first bearing bracket 6 and the second bearing bracket 7 are coaxially and relatively fixed; the first bearing bracket 6 is formed with a first receiving chamber 61 that opens toward the second bearing bracket 7, and the second bearing bracket 7 is formed with a second receiving chamber that opens toward the first bearing bracket (refer to fig. 4); the two ends of the motor respectively extend into the first accommodating cavity 61 and the second accommodating cavity, and the side wall of the motor is partially covered and fixed by the first bearing support 6 and the second bearing support 7. The motor may be a variable frequency motor, and includes a rotor 5 and a stator 4. The invention can avoid the direct contact of the motor and the shell during the installation, simplify the assembly process of the motor, further avoid the adverse effect on the motor caused by the extrusion of the stator by the shell due to the traditional shrink-fit process, and ensure the service performance of the motor. In addition, the motor is fixedly installed through the first bearing support and the second bearing support, the motor is convenient and quick to disassemble, assemble and replace, the motor is suitable for large-scale industrial production, and the installation and use cost of the motor can be reduced.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A refrigerant pump, comprising:
a first housing;
the second shell is connected to the first end of the first shell in a sealing mode;
the wiring shell cover is hermetically connected to the second end of the first shell in the axial direction;
the motor assembly comprises a motor, a first bearing bracket and a second bearing bracket; the first bearing support and the second bearing support are coaxially and relatively fixed in the shell; the first bearing bracket is formed with a first accommodating cavity which is opened towards the second bearing bracket, and the second bearing bracket is formed with a second accommodating cavity which is opened towards the first bearing bracket; two ends of the motor respectively extend into the first accommodating cavity and the second accommodating cavity, and the side wall of the motor is partially covered and fixed by the first bearing support and the second bearing support;
a drive shaft in interference fit with a rotor of the motor; a first bearing and a second bearing are respectively arranged on the first bearing bracket and the second bearing bracket; a first end of the drive shaft is connected to the first bearing, and a second end of the drive shaft is connected to the second bearing; and
an impeller rotatably disposed in the second housing and connected to the first end of the drive shaft.
2. The refrigerant pump as recited in claim 1, wherein an end of said second housing facing said first housing is provided with a first internal shoulder, and an axial second end of said first housing is provided with a second internal shoulder; the first inner shoulder is attached to the end face of the first bearing support, and the second inner shoulder is attached to the end face of the second bearing support, so that the motor assembly is prevented from generating axial displacement in the shell.
3. The refrigerant pump as recited in claim 1 or 2, wherein said first bearing bracket and said second bearing bracket are fixedly connected by a connecting member.
4. The refrigerant pump as recited in claim 1, wherein an outer wall of the bearing support is an interference fit with an inner wall of the first housing.
5. The refrigerant pump as claimed in claim 1, wherein the first bearing bracket is provided with a plurality of first refrigerant through holes, and the second housing is communicated with the accommodating cavity through the first refrigerant through holes.
6. The refrigerant pump as claimed in claim 5, wherein a plurality of second refrigerant through holes are formed in the second bearing bracket, and the accommodating chamber communicates with a space between the terminal cover and the second bearing bracket through the second refrigerant through holes.
7. The refrigerant pump as claimed in claim 1, wherein the second housing has a refrigerant inlet and a refrigerant outlet, and the refrigerant flows into the refrigerant pump from the refrigerant inlet and flows out only from the refrigerant outlet.
8. The refrigerant pump as recited in claim 7, wherein an impeller docking portion communicating with said refrigerant inlet is provided in said second housing, said impeller being rotatably connected to said impeller docking portion.
9. The refrigerant pump as recited in claim 1, wherein a hermetic terminal is provided on said terminal housing cover, and said motor is connected to said hermetic terminal by a lead wire.
10. A motor assembly, comprising a motor, a first bearing bracket and a second bearing bracket; the first bearing support and the second bearing support are coaxially and relatively fixed; the first bearing bracket is formed with a first accommodating cavity which is opened towards the second bearing bracket, and the second bearing bracket is formed with a second accommodating cavity which is opened towards the first bearing bracket; the two ends of the motor respectively extend into the first accommodating cavity and the second accommodating cavity, and the side wall of the motor is partially coated and fixed by the first bearing support and the second bearing support.
CN202010168444.1A 2020-03-11 2020-03-11 Refrigerant pump and motor assembly thereof Pending CN113394901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010168444.1A CN113394901A (en) 2020-03-11 2020-03-11 Refrigerant pump and motor assembly thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010168444.1A CN113394901A (en) 2020-03-11 2020-03-11 Refrigerant pump and motor assembly thereof

Publications (1)

Publication Number Publication Date
CN113394901A true CN113394901A (en) 2021-09-14

Family

ID=77615497

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010168444.1A Pending CN113394901A (en) 2020-03-11 2020-03-11 Refrigerant pump and motor assembly thereof

Country Status (1)

Country Link
CN (1) CN113394901A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158034A (en) * 2010-02-11 2011-08-17 浙江三花股份有限公司 Brushless direct current motor for pump and manufacturing method thereof as well as pump equipped with same
US20140294631A1 (en) * 2011-11-07 2014-10-02 Denso Corporation Water pump
CN204283900U (en) * 2014-12-08 2015-04-22 西安理华节能技术有限公司 A kind of totally-enclosed blade type Novel cooling medium pump
CN211579741U (en) * 2020-03-11 2020-09-25 上海海立电器有限公司 Refrigerant pump and motor assembly thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158034A (en) * 2010-02-11 2011-08-17 浙江三花股份有限公司 Brushless direct current motor for pump and manufacturing method thereof as well as pump equipped with same
US20140294631A1 (en) * 2011-11-07 2014-10-02 Denso Corporation Water pump
CN204283900U (en) * 2014-12-08 2015-04-22 西安理华节能技术有限公司 A kind of totally-enclosed blade type Novel cooling medium pump
CN211579741U (en) * 2020-03-11 2020-09-25 上海海立电器有限公司 Refrigerant pump and motor assembly thereof

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