CN114413001B

CN114413001B - Connecting seat, electronic expansion valve, refrigerating system and running device

Info

Publication number: CN114413001B
Application number: CN202210321105.1A
Authority: CN
Inventors: 吴延平; 刘振超
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-26
Anticipated expiration: 2042-03-30
Also published as: CN114413001A

Abstract

The invention discloses a connecting seat, an electronic expansion valve, a refrigerating system and a running device, and relates to the technical field of control valves. The connecting seat comprises a mounting hole section for accommodating at least a part of the axial length of the bearing; the bottom of the mounting hole section is provided with a first abutting structure, and the first abutting structure is used for abutting against the end part of an outer ring of the bearing; the second abutting structure on the connecting seat comprises an abutting section, and the abutting section is used for moving to the end part of the abutting outer ring departing from the first abutting structure. The abutting section is used for moving to the end part of the abutting outer ring departing from the first abutting structure, and can move to the end part of the outer ring of the abutting bearing through the abutting section, so that the reserved positions required for processing the mounting ring groove of the clamp spring are reduced, the axial length of the electronic expansion valve is reduced, and the size of the electronic expansion valve is favorably reduced; by reducing the mounting ring grooves, the connecting seat has smaller overall outer diameter under the requirement of the same minimum wall thickness, and is also favorable for reducing the volume of the electronic expansion valve.

Description

Connecting seat, electronic expansion valve, refrigerating system and running device

Technical Field

The invention relates to the technical field of control valves, in particular to a connecting seat, an electronic expansion valve, a refrigerating system and a running device.

Background

At present, new energy vehicles develop rapidly, and the endurance mileage of batteries of the new energy vehicles also becomes one of the bottlenecks restricting the further rapid development of the new energy vehicles. Under the condition of the same battery, the performance of an automobile air conditioner is improved, the weight of the whole automobile is reduced, and the endurance mileage can be improved, so that the current new energy automobile industry is inevitably researched and developed towards integration and light weight. In the refrigeration systems of driving devices such as new energy vehicles, an electronic expansion valve is usually used for throttling, i.e. the flow of the refrigeration medium in the refrigeration system is regulated. The electronic expansion valve has the advantages of easy driving of the valve core, miniaturization of the valve body, accurate and stable flow regulation and the like, but the whole volume of the electronic expansion valve adopted in the refrigerating system is large, and the electronic expansion valve is not beneficial to light weight.

Disclosure of Invention

The invention mainly aims to provide a connecting seat, aiming at reducing the whole volume of an electronic expansion valve.

An electronic expansion valve is adopted in a refrigerating system of a running device such as a new energy automobile, a bearing is partially adopted to support a rotating shaft in the form of a screw rod and the like, one end of the bearing is abutted through an abutting structure such as a step surface of a step hole, the other end of the bearing is abutted through a clamping spring which is installed in the bearing, and therefore the bearing is fixed. In order to install the clamp spring, a predetermined amount of position needs to be reserved in the electronic expansion valve to process the installation ring groove corresponding to the clamp spring, so that the axial length of the electronic expansion valve is increased, and the whole volume of the electronic expansion valve is larger.

In order to achieve the above object, the connecting seat provided by the present invention comprises a seat body, wherein the seat body comprises a connecting through hole, an end of the connecting through hole comprises a mounting hole section, the mounting hole section is used for accommodating at least a part of an axial length of a bearing, and an inner ring of the bearing is used for being fixedly connected with a rotating shaft; the bottom of the mounting hole section is provided with a first abutting structure, and the first abutting structure is used for abutting against the end part of the outer ring of the bearing; the pedestal still includes second butt structure, second butt structure includes linkage segment and butt section, the linkage segment with the end connection of pedestal, the butt section is used for removing to the butt the outer lane deviates from the tip of first butt structure.

Optionally, the second abutting structure is arranged as a bending body, one end of the bending body comprises the connecting section, and the other end of the bending body comprises the abutting section. The second butt structure of the body form of bending is convenient for manufacturing, and the fixing efficiency of the butt section moving to the outer ring of the butt bearing can be improved through the riveting process, so that the manufacturing cost of the connecting seat is reduced, and the overall installation efficiency of the electronic expansion valve is improved.

Optionally, the bending body extends along the circumferential direction of the connection through hole, and the end of the bending body far away from the base body comprises at least two abutting sections arranged at intervals. The body of bending extends the setting along connect the circumference of through hole for the tip that the body of bending kept away from the pedestal provides more optional positions for setting up the spaced butt section, has improved the connection efficiency that connecting seat and bearing are connected.

Optionally, the bending body extends along the circumferential direction of the connecting through hole, and the abutting section extends along the circumferential direction of the connecting through hole. The butt joint section of this form is through extending the setting along the circumference of connect the through-hole, makes the butt joint section form surface contact with the outer lane of bearing more easily, is convenient for reduce the local stress of the outer lane of bearing, further improves bearing and electronic expansion valve's life.

Optionally, the second abutting structure includes at least two bending bodies, and the bending bodies are arranged at intervals along the circumferential direction of the connecting through hole. The body of bending sets up along connect the circumference interval of through hole, and under the quantity of same butt section, the whole volume of the body of bending is littleer, has reduced the bulk material cost of connecting seat.

Optionally, the second abutting structure is provided as a moving body, one end of the moving body includes the connecting section, the connecting section is pivotally or slidably connected to the seat body, and the other end of the moving body includes the abutting section. The connecting section is pivoted or connected with the base body in a sliding mode, so that the movement of the adjusting abutting section is more flexible, and the flexibility degree of the fixing bearing is improved.

The invention also provides an electronic expansion valve which comprises the connecting seat.

The invention also provides an electronic expansion valve which comprises the connecting seat and the bearing, wherein the thickness of the bending body is more than 0.3 mm and less than 3.3 times of the thickness of the outer ring of the bearing, so that the bending process of a bent piece is favorably finished, the bent part is prevented from being broken or the internal stress is prevented from being overlarge, and the integral service life of the electronic expansion valve can be prolonged.

The invention also provides an electronic expansion valve, which comprises the connecting seat and the bearing; the butt section with the terminal surface butt of the outer lane of bearing, the butt section covers at least 20% of the radial dimension of the terminal surface of outer lane, the butt section can contact with the outer lane of bearing, is favorable to avoiding the butt section to contact the holder or the inner circle of bearing again, is favorable to avoiding bending simultaneously and bending the back and the butt of bearing tension or too loose, guarantees the packing force to the bearing, prevents to bend after long-time work deformation and makes the bearing not hard up, avoids the bearing to be compressed tension, stress is too big and reduces life.

Optionally, the electronic expansion valve further comprises a rotating shaft, and the rotating shaft comprises a first shaft body section fixedly connected with the inner ring of the bearing; the rotating shaft further comprises a second shaft body section and a third shaft body section, the second shaft body section and the third shaft body section are respectively arranged at two ends of the first shaft body section, and an outer spiral structure is arranged on the third shaft body section; the electronic expansion valve also comprises a rotor, and the rotor is fixedly connected with the second shaft section; the electronic expansion valve also comprises a valve core, at least part of the valve core is accommodated in the connecting through hole, and a guide structure is arranged between the outer wall of the valve core and the inner wall of the connecting through hole; the guide structure comprises a protrusion and a recess, at least one of the protrusion and the recess extends along the axial direction of the connecting through hole, and the protrusion is connected with the recess in a sliding manner; a connecting hole is formed in the end face of the valve core, and an inner spiral structure is arranged on the inner wall of the connecting hole; the inner spiral structure is connected with the outer spiral structure so as to enable the valve core to move along the axial direction of the connecting through hole, and the valve core is used for moving to block a valve port of the electronic expansion valve; the seat body is also provided with a side wall through hole which is communicated with the connecting through hole, and the valve port comprises an orifice of the connecting through hole; the seat body further comprises a detachable detaching section, and the side wall through hole and the valve port are both arranged on the detaching section. The guide structure formed by the bulges and the depressions ensures that the electronic expansion valve is more compact as a whole and is more favorable for reducing the volume. The side wall through hole and the valve port are both arranged on the detachable disassembling section, so that different parts of the electronic expansion valve can be conveniently processed in parallel, and the manufacturing efficiency of the electronic expansion valve is improved.

The invention also provides a refrigerating system which comprises the electronic expansion valve.

The invention also provides a running device which comprises the refrigerating system.

According to the technical scheme, the second abutting structure comprises the abutting section, the abutting section is used for moving to the end part of the abutting outer ring, which is far away from the first abutting structure, and the abutting section can move to the end part of the outer ring of the abutting bearing, so that the reserved position required for processing the mounting ring groove of the clamp spring is reduced, the axial length of the electronic expansion valve is reduced, and the size of the electronic expansion valve is favorably reduced; through reducing the installation annular groove, the connecting seat is under the requirement of the same minimum wall thickness, and whole external diameter is littleer, also is favorable to reducing electronic expansion valve's volume.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of 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 the structures shown in the drawings without creative efforts.

FIG. 1 is a front view of an embodiment of the connecting socket and the electronic expansion valve of the present invention.

Fig. 2 is a left side view of an embodiment of the connecting base and the electronic expansion valve of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a left side view of the connecting socket according to an embodiment of the invention.

Fig. 5 is a top view of an embodiment of the connecting socket of the present invention.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				1	Base body	11	Connecting through hole
111	Mounting hole section	112	First abutting structure
				113	Orifice	12	Bending body
121	Abutting section	13	Sidewall via
				14	Dismantling section	2	Bearing assembly
21	Outer ring	22	Inner ring
				3	Rotating shaft	31	First shaft section
32	Second oneShaft section	33	Third shaft body section
				4	Rotor	5	Valve core
51	Projection	52	Recesses
				53	Connecting hole

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the expression "and/or" and/or "is used throughout, the meaning includes three parallel schemes, for example," A and/or B ", including scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a connecting seat, which is applied to an electronic expansion valve applied to a refrigerating system, wherein the refrigerating system can be an air conditioner, a refrigerator, a heat pump water heater or other refrigerating and heating equipment. The electronic expansion valve is able to regulate the refrigerant medium flow in the refrigeration system. Refrigeration systems such as air conditioners and the like are applied to running devices, and the running devices can be new energy vehicles such as fuel vehicles and electric vehicles.

An electronic expansion valve is adopted in a refrigeration system of a running device such as a new energy automobile, a bearing is partially adopted to support a rotating shaft in the form of a screw rod and the like, one end of the bearing is abutted through an abutting structure such as a step surface of a step hole, the other end of the bearing is abutted through a clamping spring which is arranged in the bearing, and therefore the bearing is fixed. In order to install the clamp spring, a predetermined amount of position needs to be reserved in the electronic expansion valve to process the installation ring groove corresponding to the clamp spring, so that the axial length of the electronic expansion valve is increased, and the whole volume of the electronic expansion valve is larger.

Referring to fig. 1 and 4, in an embodiment of the present invention, the connecting socket includes a socket body 1, the socket body 1 includes a connecting through hole 11, and an end of the connecting through hole 11 includes a mounting hole section 111; as shown in the drawing, a mounting hole section 111 is provided at an upper end of the connection through-hole 11, i.e., a portion of the upper end of the connection through-hole 11 as the mounting hole section 111. The mounting bore section 111 is adapted to receive at least a portion of the axial length of the bearing 2. The bottom of the mounting hole section 111 is provided with a first abutment structure 112, the first abutment structure 112 being for abutting an end of the outer ring 21 of the bearing 2. In this embodiment, the mounting hole section 111 is arranged coaxially with the rest of the connecting through hole 11, but the diameter of the mounting hole section 111 is relatively large, so that a step surface is formed at the bottom of the mounting hole section 111, where the first abutment structure 112 is arranged in this embodiment. As an alternative embodiment, the first abutting structure 112 may also be provided as a protrusion or the like provided on the side wall of the mounting hole section 111; the connecting seat further comprises a second abutting structure, the second abutting structure comprises a connecting section and an abutting section 121, and the connecting relation between the connecting section and the abutting section 121 can be set to be fixedly connected, such as fixedly connected in an integrally formed mode; the connecting section is connected with the end part of the seat body, such as the upper end shown in the attached drawing; the abutment section 121 is adapted to move to abut an end of the outer ring 21 facing away from the first abutment structure 112.

The second abutting structure is arranged to comprise the abutting section 121, the abutting section 121 is used for moving to the end part, away from the first abutting structure 112, of the abutting outer ring 21, and can move to the end part of the outer ring 21 of the abutting bearing 2 through the abutting section 121, the reserved position required for machining the mounting ring groove of the clamp spring is reduced, the axial length of the electronic expansion valve is reduced, and the size of the electronic expansion valve is favorably reduced; by reducing the mounting ring grooves, the connecting seat has smaller overall outer diameter under the requirement of the same minimum wall thickness, and is also favorable for reducing the volume of the electronic expansion valve.

When using above-mentioned technical scheme, the life who uses the electronic expansion valve of above-mentioned connecting seat obtains improving. Through research, when the bearing limits axial displacement by the clamp spring, if the clamp spring clamps the bearing tightly in the axial direction, the mounting stress of the bearing is larger, the stress is not concentrated at the opening part of the clamp spring, and the service life of the bearing is reduced; if a gap is reserved between the clamp spring and the bearing in the axial direction, the bearing and the clamp spring are subjected to mutual axial impact force, and the service lives of the bearing and the clamp spring are shortened. The clamp spring axially clamps the bearing more tightly and more loosely, and the service life of the corresponding electronic expansion valve is shortened. And the connecting seat in this scheme, through the butt section of removing the tip to the butt outer lane, is favorable to adjusting the degree that compresses tightly to the outer lane of bearing, is convenient for reduce the installation stress of bearing after the assembly is accomplished, is favorable to improving bearing and electronic expansion valve's life.

In conclusion, the abutting section which is moved to the end part of the abutting outer ring simplifies the fixing process of the bearing, is favorable for adjusting the compression degree of the outer ring of the bearing, reduces the mounting stress of the bearing after the assembly is finished, and prolongs the service life of the bearing and the electronic expansion valve.

The second abutting structure is arranged to be a bending body 12, one end of the bending body 12 comprises the connection section, namely, one end of the bending body 12 is connected with the end part of the seat body 1, and the connection mode can be arranged to be fixed connection; the other end of the bending body 12 includes an abutting section 121. In this embodiment, the bending body 12 and the seat body 1 are integrally formed to realize the fixed connection between one end of the bending body and the seat body 1, for example, the bending body is formed by turning, casting, or other processes, and the end of the bending body 12 is set as the abutting section 121; the seat body 1, the bending body 12 and the abutting section 121 can be fixedly connected by welding and other modes. The second abutting structure in the form of the bending body 12 is convenient to process and manufacture, and can be bent through a riveting process; at the in-process of bending the body 12 of bending through modes such as riveting technology, butt section 121 also removes to butt outer lane 21 thereupon, specifically is the butt outer lane 21 and deviates from the tip (the upper end that the attached drawing shows) of first butt structure 112, improves the fixed efficiency that butt section 121 removed to the outer lane 21 of butt bearing 2, is favorable to reducing the manufacturing cost of connecting seat, improves electronic expansion valve's whole installation effectiveness.

Unlike the second abutting structure of the form of the bending body 12, in an alternative embodiment, the second abutting structure may be provided as a moving body, one end of the moving body includes a connecting section, the connecting section is pivotally or slidably connected with the seat body 1, and the other end of the moving body includes an abutting section 121. One end of the connecting section is pivoted with the seat body 1, and the connecting section can be specifically set as follows: the connecting section is rotatably connected with the seat body 1 through a pivot, and the pivot can be specifically set as a damping rotating shaft so as to realize the position fixation of the connecting section relative to the seat body 1; or a buckle structure is arranged between the connecting section and the seat body 1, and when the connecting section rotates to the abutting section 121 to abut against the outer ring 21, the connecting section is fixed by the buckle structure. One end and the 1 sliding connection of pedestal of linkage segment specifically can set up to: the end part of the seat body 1 is provided with a sliding groove arranged along the radial direction of the seat body 1, and the connecting section is connected with the sliding groove in a sliding way; since the sliding grooves are arranged in the radial direction, and the abutting force of the abutting section 121 and the outer ring 21 is an acting force in the axial direction, the connecting section can be kept fixed with the sliding grooves when abutting against the outer end 21; in addition, a snap structure may be added to fix the connection section after the connection section moves to the abutting section 121 to abut against the outer ring 21 in the radial direction. The connecting section is pivoted or slidably connected with the base body 1, so that the movement of the adjusting abutting section 121 is more flexible, and the flexibility of the fixing bearing 2 is improved.

In the present embodiment, as shown in fig. 5, the bending body 12 extends along the circumferential direction of the connecting through hole 11, that is, the whole bending body 12 has a ring shape, and the ring shape may be a circumferential ring shape or an open ring shape. As an alternative embodiment, the end of the bending body 12 away from the seat body 1 includes at least two abutting sections 121 arranged at intervals. The spaced abutting sections 121 may be formed by providing spaced portions at one end of the annular bending body 12 away from the first abutting structure 112 to form the spaced abutting sections 121, and such spaced portions (i.e., the abutting sections 121) are used for bending and abutting the outer ring 21; alternatively, the abutting sections 121 arranged at intervals may be arranged such that the protruding structures arranged at intervals (i.e., the abutting sections 121) are arranged at the end of the annular bending body 12 away from the first abutting structure 112 to form the abutting sections 121 arranged at intervals, and such protruding structures arranged at intervals (i.e., the abutting sections 121) are used for bending and abutting the outer ring 21. The bending body 12 extends along the circumferential direction of the connecting through hole 11, so that the end part of the bending body 12 far away from the seat body 1 provides more optional positions for arranging the spaced butt joint sections 121, and the connecting efficiency of the connecting seat and the bearing 2 is improved. As an alternative embodiment, the abutment section 121 extends in the circumferential direction of the connection through hole 11, i.e. the end of the annular bent body 12 remote from the first abutment structure 112 forms an annular contact section that is in contact with the outer ring 21 of the bearing 2. In the abutting section 121 of this embodiment, the abutting section 121 extends along the circumferential direction of the through hole 11, so that the abutting section 121 is more easily in surface contact with the outer ring 21 of the bearing 2, thereby facilitating reduction of local stress of the outer ring 21 of the bearing 2 and further improving the service life of the bearing 2 and the electronic expansion valve.

In an embodiment different from the annular bent bodies 12, the second abutting structure includes at least two bent bodies 12, and the bent bodies 12 are provided at intervals in the circumferential direction of the connection through hole 11. The body 12 of bending sets up along connect the circumference interval of through-hole 11, and under the quantity of same butt section 121, the whole volume of the body 12 of bending is littleer, has reduced the whole material cost of connecting seat.

As shown in fig. 1 and fig. 2, the present invention further provides an electronic expansion valve, which includes the connecting seat, and further includes a bearing 2. The bearing 2 in this embodiment is a single row deep groove ball bearing. The bent body 12 before bending is provided to extend in the axial direction of the connection through hole 11, thereby forming a height dimension in the extending direction. The height of the bent body 12 before bending along the axial direction of the connecting through hole 11 (as shown by a dimension H in fig. 4) is more than 0.2 mm and less than 5.2 times of the thickness of the outer ring 21 of the bearing 2 (as shown by a dimension T2 in fig. 3), namely 5.2 × T2 > H > 0.2 mm. This makes after the body 12 of bending bends, butt section 121 can be with the outer lane 21 contact of bearing 2, is favorable to avoiding butt section 121 to contact the holder or the inner circle 22 of bearing 2 again, is favorable to avoiding bending the back and bearing 2's butt tension or too loose after being favorable to avoiding bending simultaneously, guarantees the packing force to the bearing, prevents to work for a long time after the piece of bending deformation and makes bearing 2 not hard up, avoids bearing 2 to receive to press tension too tightly, stress is too big and reduces life.

Alternatively, as shown in fig. 1 and 3, the abutting section 121 abuts against an end surface of the outer ring 21 of the bearing 2, and the abutting section 121 covers at least 20% of the radial dimension of the end surface of the outer ring 21. This covered dimension is shown as dimension T3 in fig. 3, the abutment section 121 covers at least 20% of the radial dimension of the end face of the outer ring 21, i.e. the ratio of T3 to the thickness T2 of the outer ring 21 is greater than 20%, i.e. T3/T2 > 20%, i.e. (T2-T3)/T2 < 80%; that is, the radial dimension T3 of the abutment section 121 covering the end face of the outer ring 21 may be characterized by the dimension of the outer ring 21 uncovered. At this moment, the butt section 121 can contact with the outer ring 21 of the bearing 2, and is favorable for avoiding the butt section 121 to contact with the retainer or the inner ring 22 of the bearing 2, and is favorable for avoiding the bent piece to be bent and the butt of the bearing 2 to be too tight or too loose, so that the pressing force of the bearing is ensured, the bent piece is prevented from being deformed after long-time work, the bearing 2 is prevented from being loosened, and the bearing 2 is prevented from being pressed too tight and too large in stress, so that the service life of the bearing is prolonged.

Optionally, the thickness of the bending body 12 (as shown in the dimension T1 of fig. 3 and 4) is greater than 0.3 mm and less than 3.3 times of the thickness of the outer ring 21 of the bearing 2 (as shown in the dimension T2 of fig. 3), that is, 3.3 × T2 > T1 > 0.3 mm. Therefore, the bending process of the bent piece is favorably finished, the bent part is prevented from being broken or the internal stress is prevented from being overlarge, and the integral service life of the electronic expansion valve can be prolonged.

When the bearing 2 is an angular contact ball bearing or a tapered roller bearing, that is, when the thickness of the outer ring 21 is not uniform as a whole, the thickness of the outer ring 21 (as indicated by a dimension T2 in fig. 3) is represented by the thickness at the end surface where the abutting section 121 abuts.

In the present embodiment, as shown in fig. 1, the electronic expansion valve further comprises a rotating shaft 3, the rotating shaft 3 comprises a first shaft body section 31 fixedly connected with the inner ring 22 of the bearing 2; the rotating shaft 3 further comprises a second shaft body section 32 and a third shaft body section 33, the second shaft body section 32 and the third shaft body section 33 are respectively arranged at two ends of the first shaft body section 31, and the third shaft body section 33 is provided with an external spiral structure. The shaft 3 may be configured as a lead screw or a threaded rod, and the external spiral structure is a spiral structure on the side wall of the lead screw or the threaded rod. A connecting hole 53 is formed in the end face of the valve core 5, and an inner spiral structure is arranged on the inner wall of the connecting hole 53; the inner spiral structure is connected with the outer spiral structure, namely the inner spiral structure is arranged corresponding to the spiral structure on the side wall of the screw rod or the screw rod, so that the valve core 5 moves along the axial direction of the connecting through hole 11, and the valve core 5 can be used for moving to block the valve caliber of the electronic expansion valve. The valve core 5 may be arranged to close the orifice 113 as a valve port by an end portion as shown in the drawing; the valve core 5 may also be configured to block the orifice 113 as a valve port by an annular convex structure of the side wall.

The electronic expansion valve further comprises a rotor 4, and the rotor 4 is used for bearing electromagnetic force to rotate. The rotor 4 is fixedly connected to the second shaft section 32, in particular by means of a connecting web as shown in fig. 1; the electronic expansion valve also comprises a valve core 5, wherein at least part of the valve core 5 is accommodated in the connecting through hole 11, and a guide structure is arranged between the outer wall of the valve core 5 and the inner wall of the connecting through hole 11; the guide structure includes a projection 51 and a recess 52. In the present embodiment, as shown in fig. 2, the protrusion 51 is provided on the valve element 5, specifically, on the side end of the one-piece structure included in the valve element 5; as shown in fig. 2, 4, and 5, the recess 52 is provided on the inner wall of the connecting through-hole 11. As an alternative embodiment, it is also possible to provide the projection 51 on the inner wall of the communication through hole 11 and the depression 52 on the valve element 5.

At least one of the projection 51 and the recess 52 is provided along the axial extension of the communication hole 11, the recess 52 is provided along the axial extension of the communication hole 11 in the present embodiment, the projection 51 is provided along the axial extension of the communication hole 11 in an alternative embodiment, or both the projection 51 and the recess 52 are provided along the axial extension of the communication hole 11. The protrusion 51 is slidably connected with the recess 52. The guide structure formed by the protrusion 51 and the recess 52 makes the electronic expansion valve more compact as a whole, and is more beneficial to reducing the volume.

In this embodiment, as shown in fig. 1, the base body 1 further includes a detachable section 14. The seat body 1 is further provided with a side wall through hole 13, the side wall through hole 13 is communicated with the connecting through hole 11, and the valve port comprises an orifice 113 of the connecting through hole 11. The sidewall through-holes 13 and the valve ports are both provided on the removal section 14. The side wall through hole 13 and the valve port are both arranged on the detachable detaching section 14, so that different parts of the electronic expansion valve can be conveniently processed in parallel, and the manufacturing efficiency of the electronic expansion valve is improved.

The invention also provides a refrigerating system which comprises the electronic expansion valve. The refrigerating system can be a refrigerating system of an air conditioner, a refrigerator, a heat pump water heater or other refrigerating and heating equipment.

The invention also provides a running device which comprises the refrigerating system. The running device can be a new energy automobile such as a fuel automobile, an electric automobile and the like.

The electronic expansion valve provided by the invention adopts all technical schemes of all embodiments of the connecting seat, and the refrigeration system and the form device provided by the invention adopt all technical schemes of all embodiments of the electronic expansion valve, so that the electronic expansion valve at least has all beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an electronic expansion valve which characterized in that, includes the connecting seat, the connecting seat includes the pedestal, the pedestal includes:

a connecting through hole, an end of the connecting through hole comprising a mounting bore section for accommodating at least a portion of an axial length of a bearing; the bottom of the mounting hole section is provided with a first abutting structure, and the first abutting structure is used for abutting against the end part of the outer ring of the bearing;

the second abutting structure comprises a connecting section and an abutting section, the connecting section is connected with the end part of the seat body, and the abutting section is used for moving to abut against the end part of the outer ring departing from the first abutting structure;

the second abutting structure is arranged to be a bent body, one end of the bent body comprises the connecting section, and the other end of the bent body comprises the abutting section;

the electronic expansion valve further comprises the bearing, and the thickness of the bending body is larger than 0.3 millimeter and smaller than 3.3 times of the thickness of the outer ring of the bearing.

2. The electronic expansion valve according to claim 1, wherein the bending body extends along a circumferential direction of the connecting through hole, and an end portion of the bending body away from the seat body includes at least two abutting sections disposed at intervals.

3. The electronic expansion valve according to claim 1, wherein the bending body extends along a circumferential direction of the connecting through hole, and the abutting section extends along the circumferential direction of the connecting through hole.

4. The electronic expansion valve according to claim 1, wherein the second abutting structure comprises at least two of the bending bodies, and the bending bodies are arranged at intervals along a circumferential direction of the connecting through hole.

5. The electronic expansion valve is characterized by comprising a connecting seat, wherein the connecting seat comprises a seat body, and the seat body comprises:

the second abutting structure is arranged as a moving body, one end of the moving body comprises the connecting section, the connecting section is in pivot joint or sliding connection with the base body, and the other end of the moving body comprises the abutting section.

6. The electronic expansion valve according to any of claims 1 to 5, wherein the abutment section abuts an end face of the outer ring of the bearing, the abutment section covering at least 20% of a radial dimension of the end face of the outer ring.

7. An electronic expansion valve according to any of claims 1-5, further comprising:

the rotating shaft comprises a first shaft body section fixedly connected with the inner ring of the bearing; the rotating shaft further comprises a second shaft body section and a third shaft body section, the second shaft body section and the third shaft body section are respectively arranged at two ends of the first shaft body section, and an external spiral structure is arranged on the third shaft body section;

the rotor is fixedly connected with the second shaft section;

the valve core is at least partially accommodated in the connecting through hole, and a guide structure is arranged between the outer wall of the valve core and the inner wall of the connecting through hole; the guide structure comprises a protrusion and a recess, at least one of the protrusion and the recess extends along the axial direction of the connecting through hole, and the protrusion is connected with the recess in a sliding manner;

a connecting hole is formed in the end face of the valve core, and an inner spiral structure is arranged on the inner wall of the connecting hole; the inner spiral structure is connected with the outer spiral structure so that the valve core moves along the axial direction of the connecting through hole, and the valve core is used for moving to block a valve port of the electronic expansion valve;

the seat body is also provided with a side wall through hole which is communicated with the connecting through hole, and the valve port comprises an orifice of the connecting through hole;

the seat body further comprises a detachable disassembling section, and the side wall through hole and the valve port are both arranged on the disassembling section.

8. A refrigeration system comprising an electronic expansion valve according to any of claims 1 to 7.

9. A running gear comprising the refrigeration system of claim 8.