KR200495689Y1 - Air conditioning system, electronic expansion valve and electromagnetic coil structure - Google Patents

Abstract

The electromagnetic coil structure includes a coil assembly 110 , an insulating protective plate 120 , a sealant 130 and a lead assembly 140 , and the coil assembly 110 is connected to a plastic sealing casing 111 and a plastic sealing casing 111 . It includes a coil 112 accommodated, and the insulation protection plate 120 is installed on the side wall 1111 of the plastic sealing casing 111, and the outlet 122 is provided between the side walls 1111 of the plastic sealing casing 111. to form a receiving cavity 121, the receiving cavity 121 is divided into a fixed cavity 1211 and a stretching cavity 1212, and the stretching cavity 1212 is located at one end close to the outlet 122, and the sealant ( 130 is accommodated and solidified in the fixed cavity 1211, a sealing surface 131 is formed at one end close to the outlet 122 of the sealant 130, and the lid assembly 140 includes a lid 141 and , one end of the lead 141 is buried in the sealant 130 and electrically connected to the coil 112 , and the other end protrudes from the outlet 122 . An electronic expansion valve including an electromagnetic coil structure and an air conditioner system including the electromagnetic expansion valve are provided. Such an electromagnetic coil structure reduces the probability of occurrence of situations such as excessive bending of the lead, rupture of the lead sheath, and breakage of the lead, and extends the service life of the lead and electromagnetic coil structure.

Description

Air conditioning system, electronic expansion valve and electromagnetic coil structure

This application relates to the technical field of manufacturing air conditioning equipment, and more particularly, to an air conditioner, an electromagnetic expansion valve, and an electromagnetic coil structure thereof.

This application claims priority based on Chinese Patent Application No. 201821210944.1, entitled 'Air conditioner, electromagnetic expansion valve and electromagnetic coil structure', filed on July 28, 2018, the entirety of which is incorporated herein by reference.

The electromagnetic expansion valve, also called a throttle valve or a control valve, is one of the main components in an air conditioner system, and mainly functions to regulate a throttling pressure drop and a flow rate. The electromagnetic expansion valve generally includes an electromagnetic coil structure and a valve body structure connected with the electromagnetic coil structure. The electromagnetic expansion valve must inevitably be moved between stations such as warehouses and workshops before installation, and the movement of the electromagnetic expansion valve is usually realized by the operator firmly holding the reed provided in the solenoid valve structure.

In the process of moving the electromagnetic expansion valve, as the root of the reed is bent back and forth, situations such as rupture of the reed shell and breakage of the reed easily occur. In particular, in a low-temperature environment, the reed shell becomes hard and brittle, causing the reed to bend and break more easily, which greatly affects the service life of the electromagnetic expansion valve.

Based on this, it is necessary to provide an air conditioner system with a long service life, an electromagnetic expansion valve, and an electromagnetic coil structure thereof in response to the above technical problem.

The electromagnetic coil structure includes a coil assembly, an insulating shroud, a sealant and a lead assembly, wherein the coil assembly includes a plastic sealed casing and a coil accommodated and fixed to the plastic sealed casing, wherein the insulating shroud is a sidewall of the plastic sealed casing is installed in, to form an accommodating cavity having an outlet between the sidewalls of the plastic sealing casing, the accommodating cavity includes a fixed cavity and an elongating cavity communicating with each other, the elongating cavity is installed at one end adjacent to the outlet become; The sealant is accommodated and solidified in the fixing cavity, and a sealing surface is formed at one end of the sealant adjacent to the outlet, the lid assembly includes a lid, and one end of the lid is embedded in the sealant so that the coil and the coil are connected. It is electrically connected, and the other end protrudes from the outlet.

In one embodiment, the insulating protective plate includes a fixing part and an extending part respectively provided at a distance from the sidewall of the plastic sealing casing, and the extending part is provided close to the outlet, and the fixing part and the plastic sealing part The fixing cavity is formed between the sidewalls of the casing, and the stretching cavity is formed between the stretching portion and the sidewall of the plastic sealing casing.

In one embodiment, the gap between the stretching portion and the side wall of the plastic sealing casing is smaller than the clearance between the fixing portion and the side wall of the plastic sealing casing.

In one embodiment, a turn-up part is provided on the edge of the stretching part.

In one embodiment, the included angle between the turn-up part and the extending direction of the insulating protective plate is an acute angle.

In one embodiment, a support surface is provided at one end of the insulation protection plate adjacent to the outlet, the lead is in contact with the support surface, and one end of the plastic sealing casing adjacent to the outlet is provided with a fixing surface. and a distance from the support surface to a point where the lead protrudes from the sealing surface is greater than a distance from the support surface to the fixing surface.

The insulating protective plate includes a main body, and a distance from the support surface to a point where the lead protrudes from the sealing surface is greater than a distance from the main body to the plastic sealing casing.

In one embodiment, a mounting portion is provided on a side wall of the plastic sealing casing, and the insulating protective plate is mounted to the mounting portion, and forms the receiving cavity between the insulating protective plate and a surface of the mounting portion.

In one embodiment, the coil assembly further includes a pin, the lead assembly further includes a circuit board, the pin is fixed to the plastic sealing casing, and one end of the pin is electrically connected to the coil. , the other end is accommodated in the fixed cavity, the circuit board is accommodated in the fixed cavity and connected to one end of the lead buried in the sealant, and the pin is inserted into the circuit board and electrically connected to the circuit board thereby realizing an electrical connection between the lead and the coil.

The present application further provides a technical solution as follows, wherein the electromagnetic expansion valve includes the electromagnetic coil structure and the valve body structure described above, and the valve body structure includes a housing having a hollow structure, a rotor accommodated in the housing, and the It includes a valve needle electrically connected to the rotor, the plastic sealing casing is installed at one end of the housing 21, and the rotor and the coil are matched.

The present application further provides a technical solution as follows, the air conditioner system includes the above-described electronic expander valve.

The structure of the air conditioner, the electromagnetic expansion valve and the electromagnetic coil described above has the following advantages.

As the sealant is accommodated and solidified in the fixed cavity, the stretched portion protrudes from the sealing surface, and thus the stretched portion has a supporting/restricting action on the lead in which the bending occurs. Therefore, if bending occurs in the reed during the moving operation of the electromagnetic expansion valve, the edge of the outlet can effectively reduce the bending angle of the reed, and situations such as excessive bending of the reed, rupture of the reed shell and breakage of the reed may occur. It lowers the probability, prolongs the service life of the lead, and further increases the service life of the electromagnetic coil structure. Accordingly, the service life of the electromagnetic expansion valve and the air conditioner including the above-described electromagnetic coil structure is further increased.

1 is a structural schematic diagram of an electronic expansion valve provided in the present application.
2 is an electromagnetic coil structure provided in the present application.
3 is a partial cross-sectional view of an electromagnetic coil structure provided in the present application.
4 is a partial enlarged view of part A of FIG. 3 provided in the present application.
5 is a schematic structural diagram showing distances in FIG. 3 provided in the present application.
6 is a bottom view of FIG. 5 provided in the present application.
7 is a structural schematic diagram of an embodiment of the insulating protective plate provided in the present application.
8 is a rear view of the insulating protective plate of FIG. 7 provided in the present application.
9 is a structural schematic diagram of an embodiment of the insulating protective plate provided in the present application.
10 is a left side view of the insulation protection plate of FIG. 9 provided in the present application.
11 is a structural schematic diagram of an embodiment of an insulating protective plate provided in the present application.
12 is a left side view of the insulating protection plate of FIG. 11 provided in the present application.

The following clearly and completely describes the technical solutions in the embodiments of the present application by combining the drawings in the embodiments of the present application. It is obvious that the described embodiments are merely some embodiments of the present application and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the technical field to which the present invention pertains without progressive labor fall within the scope of protection of the present application.

It should be noted that when an element is said to be "hypothesised" in another element, it may be directly in the other element or an intermediate element may exist. Where a component is considered to be "installed" on another component, it may be installed directly on the other component or intervening components may exist concurrently. Where a component is considered to be "fixed" to another component, it may be directly secured to the other component or intervening components may exist concurrently.

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 terms used in the specification of the present application in the present application are only for describing specific embodiments and are not intended to limit the present application. As used herein, the term “or/and” includes any and all combinations of one or more associated listed items.

The present application provides an air conditioner system (not shown), and the air conditioner system may be applied to fields such as a refrigeration warehouse, a vehicle, and a home. As shown in FIG. 1 , the air conditioner system includes an electronic expansion valve 100 mounted on a pipeline and configured to control a flow rate of a coolant in the air conditioner system.

Of course, in addition to including the electromagnetic expansion valve 100 , the air conditioner system further includes members such as a compressor and a heat exchanger, and each member is matched with each other to implement a cooling and/or heating function of the air conditioner system.

Continuing to refer to FIG. 1 , the electromagnetic expansion valve 100 includes an electromagnetic coil structure 10 and a valve body structure 20 , and the electromagnetic coil structure 10 is mounted to the valve body structure 20 . do. The electromagnetic coil structure 10 is mainly used to provide a single rotating magnetic field to drive the movement of the mechanism in the valve body structure 20 to realize the flow rate control function of the electromagnetic expansion valve 100 .

The valve body structure 20 includes a housing 21, a valve needle (not shown) and a rotor (not shown), the housing 21 is a hollow structure, and a valve hole (not shown) in the housing 21 time) is formed, and the rotor and the valve needle are accommodated in the housing. One end of the valve needle is connected to the rotor, the other end is matched with the valve ball, and the rotor and the electromagnetic coil structure 10 are matched. The magnetic field generated in the electromagnetic coil structure 10 causes the rotor to rotate, and the rotor causes the valve needle to reciprocate and controls the degree of opening of the valve opening, thereby further adjusting the size of the coolant flow rate.

Of course, in addition to the members such as the housing 21, the valve needle, and the rotor described above, the valve body structure 20 further includes a screw rod structure, etc., and the above-described members are matched with each other so that the electromagnetic expansion valve (100) to implement the flow control function.

2 to 4 , the electromagnetic coil structure 10 includes a coil assembly 110 , an insulating protective plate 120 , a sealant 130 , and a lid assembly 140 . The electromagnetic coil structure 10 is mounted on the housing 21 , the insulation protection plate 120 is installed on the coil assembly 110 , and an outlet 122 is provided between the coil assemblies 110 . A cavity 121 is formed. The sealant 130 is accommodated and solidified in the receiving cavity 121 , and one end of the lid assembly 140 is embedded in the sealant 130 to be electrically connected to the coil assembly 110 , and the other end is the outlet. The electromagnetic coil structure 100 is energized by protruding from the 122 to the outside of the receiving cavity 121 and electrically connected to the outside.

The coil assembly 110 includes a plastic sealing casing 111 and a coil 112, wherein the coil 112 is accommodated and fixed in the plastic sealing casing 111, and the plastic sealing casing 111 mainly supports and It acts as an electrical insulation. The plastic sealing casing 111 is mounted on the housing 21 to realize the mounting between the electromagnetic coil structure 10 and the valve body structure 20 . The coil 112 is used as a stator, the coil 112 and the rotor are installed coaxially, and the coil 112 generates a magnetic field after energization so that the rotor rotates.

Preferably, the plastic sealing casing 111 is a hollow structure having an opening. In general, the plastic sealing casing 111 is made of a material having high strength and having insulating properties such as plastic, mica, etc., so that the plastic sealing casing 111 has a large supporting force under the premise that it has insulation.

In this embodiment, the plastic sealing casing 111 is injection molded from plastic. The plastic sealing casing 111 forms a circular ring shape. Since the housing 21 also has a generally cylindrical structure, the plastic sealing casing 111 is provided to form a circular ring shape to make the connection between the plastic sealing casing 111 and the housing 21 more closely. In addition, the connection between the electromagnetic coil structure 10 and the valve body structure 20 is made stronger, and the structural stability of the electromagnetic expansion valve 100 is improved.

Preferably, a connecting member 211 is installed between the plastic sealing casing 111 and the housing 21 . One end of the connecting member 211 is connected to the plastic sealing casing 111 , and the other end is connected to the housing 21 , thus realizing a connection between the plastic sealing casing 111 and the housing 21 . do.

Further, the coil 112 is embedded in the plastic sealing casing 111 , that is, the plastic sealing casing 111 is coated on the outer surface of the coil 112 . Since the coil 112 is installed along the circumferential direction of the plastic sealing casing 111, after the coil 112 is energized, a rotating magnetic field is generated inside the plastic sealing casing 111 to control the movement of the rotor. drive it

7 and 8 together, in one embodiment, the insulation protection plate 120 is installed on the side wall 1111 of the plastic sealing casing 111, and between the side walls 1111 of the plastic sealing casing 111. The accommodating cavity 121 having the outlet 122 is formed. The accommodation cavity 121 is divided into a fixed cavity 1211 and an extension cavity 1212 that communicate with each other, and the extension cavity 1212 is installed at one end close to the outlet 122, and the sealant 130 is It is received and solidified within the stationary cavity 1211 .

Optionally, the insulating protection plate 120 is made of a material with good insulating properties, such as plastic, ceramic, asbestos, that is, the insulating protection plate 120 has insulation. The insulating protection plate 120 is fixed to the side wall 1111 of the plastic sealing casing 111 by welding, bonding, screwing, etc. method. In this embodiment, the insulating protective plate 120 is fixed to the side wall 1111 of the plastic sealing casing 111 through an ultrasonic welding method.

Furthermore, as shown in FIGS. 3 and 7 , the insulating protection plate 120 includes a main body 120a and a connection part 120b, and the sidewalls of the main body 120a and the plastic sealing casing 111 . The accommodating cavity 121 having the outlet 122 is formed between 1111, and the connection part 120b is provided on one side of the main body 120a facing the plastic sealing casing 111. The connection between the main body 120a and the plastic sealing casing 111 is realized.

Preferably, the cross section of the main body 120a forms a “U” shape, and the “U”-shaped opening of the main body 120a is provided toward the plastic sealing casing 111 , and the connection part (120b) is laid in the circumferential direction of the "U"-shaped opening of the main body (120a). One side of the main body 120a is provided with an opening, that is, the accommodation cavity 121 is formed.

Furthermore, the main body 120a includes a fixing part 1201 and an extending part 1202 which are respectively provided at a distance from the sidewall 1111 of the plastic sealing casing 111 . The stretching portion 1202 is provided in proximity to the outlet 122, forming the fixing cavity 1211 between the fixing portion 1201 and the sidewall of the plastic sealing casing 111, and the stretching portion ( The stretching cavity 1212 is formed between 1202 and the sidewall 1111 of the plastic sealing casing 111 .

Furthermore, the connection part 120b is located on one side where the insulation protection plate 120 faces the housing 21 , and the connection part 120b is joined to the sealing casing 111 , and the insulation protection plate 120 is bonded to the sealing casing 111 through ultrasonic welding. It implements the connection between 120 and the plastic sealing casing 111 .

Preferably, the connection part 120b is flat, the side wall 1111 of the plastic sealing casing 111 is provided with a mounting part 1113, and the outer surface of the mounting part 1113 is also flat, and the connection part 120b ) is bonded to the mounting part 1113 , and forms the accommodation cavity 121 between the insulating protective plate 120 and the mounting part 1113 . It can be understood that the mounting part 1113 may also be used as an identification part, and the position of the accommodation cavity 121 is identified to make the mounting of the lid assembly 140 simpler and faster.

Furthermore, as shown in FIG. 8 , a welding line 120c is installed on the connecting portion 120b, and the welding line 120c is fused together with the plastic sealing casing 111 during welding to realize a welding effect.

Preferably, the cross section of the welding line 120c forms a triangle, and the connection part 120b does not install the welding line 120c at a position adjacent to the outlet 122 .

3 and 4 , the lid assembly 140 includes a lid 141 . One end of the lead 141 is buried in the sealant 130 and is electrically connected to the coil 112 , and the other end protrudes from the outlet 122 and is electrically connected to an external power source of the coil 112 . realize energization. Accordingly, the main function of the lead 141 is to connect the coil 112 to an external power source so that the external power supply provides electrical energy to the coil 112 .

The coil assembly 110 further includes a pin 113 , the pin 113 is fixed to the plastic sealing casing 111 , and one end of the pin 113 is connected to the coil 112 , and the other end is connected to the coil 112 . is accommodated in the fixed cavity 1211 . The lead assembly 140 further includes a circuit board 142 , and the circuit board 142 is accommodated in the fixed cavity 1211 and connected to one end of the lead 141 embedded in the sealant 130 . and the pin 113 is inserted and connected to the circuit board 142 to be electrically connected to the circuit board 142 , thereby realizing an electrical connection between the lead 141 and the coil 112 .

Specifically, the pin 113 is a bar-shaped metal member. When the lead 141 is to be electrically connected to the coil 112 , the pin 113 needs only to be inserted into the circuit board 142 , and installation is simple as well as fast.

The sealant 130 is a colloid and is injected into the fixing cavity 1211 to form the sealant 130 after being solidified, and one end of the lid assembly 140 is fixed in the fixing cavity 1211 . . A sealing surface 131 is formed at one end of the sealant 130 close to the outlet 122 . It can be understood that, since the sealant 130 is located in the fixed cavity 1211 , the extension 1202 protrudes from the sealing surface 131 . When bending occurs in the lid 141 during the moving operation of the electromagnetic expansion valve 100 , the extension cavity 1212 acts to limit/support the position of the lid 141 . Therefore, the bending angle of the lead 141 on the sealing surface 131 is reduced, the lead 141 is excessively bent and the lead 141 is broken due to the rupture of the lead shell, etc. Effectively prolongs the service life of the 141 so that the service life of the electromagnetic coil structure 10 becomes longer.

Furthermore, as shown in FIG. 5 , a support surface 124 is provided at one end of the insulation protection plate 120 close to the outlet 122 , and the lead 141 is the support surface by the action of an external force. (124) abuts. A fixing surface 1112 is provided at one end of the plastic sealing casing 111 close to the outlet 122 , and the lead 141 protrudes from the sealing surface 131 from the support surface 124 . The distance to is L1, the distance from the support surface 124 to the fixing surface 1112 is L2, and the relationship between L1 and L2 satisfies L1>L2>0.

It is to be understood that the sealant 130 is generally molded after pouring the colloidal material into the receiving cavity 121 , and the colloidal material has fluidity before the sealant 130 is molded. When the distance from the support surface 124 to the point where the lead 141 protrudes from the sealing surface 131 is smaller than the distance from the support surface 124 to the fixing surface 1112 (ie, L1 ) <L2), during the forming process of the sealant 130, the colloidal material overflows from the receiving cavity 121 and even flows to the fixing surface 1112. This not only contaminates the plastic sealing casing 111 , but also reduces the distance from the support surface 124 to where the lid 141 protrudes from the sealing surface 131 . Therefore, by providing a distance from the support surface 124 to the point where the lead 141 protrudes from the sealing surface 131 is greater than the distance from the support surface 124 to the fixing surface 111 ( That is, L1 > L2), where the lead 141 protrudes from the sealing surface 131 from the supporting surface 124 as well as preventing the colloidal material from overflowing and contaminating the plastic sealing casing 111 . effectively extend the distance to Accordingly, the bending angle at the sealing surface 131 of the bent lead 141 is reduced, and in the lead 141 , the lead shell is ruptured at the sealing surface 131 and the lead 141 . lowers the probability of breaking

It can be understood that the sealant 130 mainly serves to seal, fix and electrically insulate. In this embodiment, the sealant 130 is generally made of a colloidal material having good electrical insulation performance, such as polyester, epoxy, polyurethane, polybutadienoic acid, organosilicon, polyesterimide, and polyimide. Specifically, the sealant 130 is formed after pouring a liquid colloidal material into the fixed cavity 1211 and waiting for it to cool. Accordingly, the shape of the sealant 130 and the shape of the inner wall of the fixed cavity 1211 match each other.

Preferably, the sealant 130 is an epoxy colloid. It can be understood that since the epoxy colloid has strong adhesion, good electrical and mechanical performance, high chemical stability and size stability, the sealant 130 also has good electrical performance, good mechanical performance, high chemical stability, and high adhesion. have a strong back dominance. Accordingly, the sealant 130 maintains very good connection stability with the receiving cavity 121 , and at the same time has advantages such as good electrical insulation performance and not easily deformed when subjected to an external force.

Furthermore, as shown in FIGS. 5 and 6 , the distance between the main body 120a and the plastic sealing casing 111 is L3, and the relationship between L3 and L1 satisfies L1>L3. That is, the distance from the support surface 124 to the point where the lead 141 protrudes from the sealing surface 131 is greater than the distance between the main body 120a and the plastic sealing casing 111 .

It can be understood that the distance from the support surface 124 to the point where the lead 141 protrudes from the sealing surface 131 is greater than the distance between the main body 120a and the plastic sealing casing 111 . By providing large, the distance from the edge of the extending|stretching cavity 1212 to the lead 141 of the sealing surface 131 can be reduced significantly. Further, the bending angle at the sealing surface 131 of the lead 141 in which the bending occurs is made smaller, and the probability of occurrence of situations such as rupture of the lead shell of the lead 141 in which the bending occurs and the lead 141 is broken. It is significantly lowered to allow the lead 141 to have a longer service life.

9 and 10 together, in one embodiment, the gap between the stretched portion 1202 and the sidewall 1111 of the plastic sealing casing 111 is L5, and the fixing portion 1201 and the plastic sealing The gap between the sidewalls 1111 of the casing 111 is L4, and the relationship between L4 and L5 satisfies 0<L5<L4.

It can be understood that the fixing cavity 1211 accommodates and fixes the pins 113 and the circuit board 142 , and serves to protect the pins 113 , the circuit board 142 , and the leads 141 . On the other hand, the stretching cavity 1212 mainly serves to support the lead 141 in which the bending occurs. Accordingly, the lead 141 , the circuit board 142 and the pin 113 ensure the electrical safety in the fixed cavity 1211 , the extension 1202 and the sidewall 1111 of the plastic sealing casing 111 . ) to effectively reduce the gap between In addition, the bending angle of the lead 141 in the sealing surface 131 is further reduced, and in the lid 141 , the situation such as the lid shell is ruptured in the sealing surface 131 and the lead 141 is broken. It is possible to reduce the probability of occurrence and effectively extend the service life of the lead 141 .

Referring to FIGS. 11 and 12 together, in one embodiment, a turn-up part 123 is provided at one end of the extension part 1202 close to the outlet 121, and the turn-up part 123 is the extension part. It is provided to form a narrow angle with the drawing rectangle of (1202), and the reference numeral of the narrow angle is β. It can be understood that the turn-up part 123 acts as a position limiting/supporting action for the lead 141 in which the bending occurs, and when bending occurs in the lead 141 , the lead 141 is the turn-up part 123 . ) to form a relatively smooth transition under the position limiting/supporting action of That is, it reduces the angle at which the lead 141 is secondarily bent, and reduces the risk of the lead sheath being ruptured.

Preferably, the included angle formed by the extending direction of the turn-up part 123 and the extending part 1202 is an acute angle (that is, the included angle formed by the extending direction of the turn-up part 123 and the extending part 1202 is 90 degrees) It is all small, β < 90 °), and it is understandable that by providing the corresponding angle as an acute angle so that the lead 141 is supported by the turn-up part 123 to form an acute angle transient, the bending is The bending angle at the turn-up part 123 of the lead 141 is further reduced. Accordingly, in the lead 141 in which bending has occurred, the probability of occurrence of a situation such as rupture of the lead sheath at the edge of the stretching portion 1202 and the break of the lead 141 is reduced.

This application has the following advantages. Since the sealant 130 is accommodated and solidified in the fixed cavity 1211 , the stretched part 1202 protrudes from the sealing surface 131 , and thus the stretched part 1202 is supported against the lead 141 where the bending has occurred. /Location-limiting action. When bending occurs in the reed 141 during the moving operation of the electromagnetic expansion valve 100, the edge of the outlet 122 can effectively reduce the bending angle of the reed 141, and the reed 141 is excessively bent. It lowers the probability of occurrence of situations such as rupture of the lead sheath and breakage of the lead 141 , effectively extending the service life of the lead 141 , and further prolongs the service life of the electromagnetic coil structure 10 .

It can be understood that, since the electromagnetic coil structure 10 has a long service life, the service life of the electromagnetic expansion valve 100 and the air conditioner including the electromagnetic coil structure 10 described above is also longer.

Each technical feature of the above-described embodiments may be arbitrarily combined, and all possible combinations of each technical feature in the above-described embodiments have not been fully described in order to simplify the description. However, as long as there is no contradiction in the combination of these technical features, it should be regarded as the range described herein.

The foregoing examples represent only some embodiments of the present application, and the description is specific and detailed. However, it should not be construed as limiting the patent scope of the application. It should be pointed out that, for those of ordinary skill in the art to which the present invention pertains, some modifications and improvements may be made without departing from the concept of the present application, and they all fall within the protection scope of the present application. Accordingly, the scope of the patent bohom of the present application should be based on the appended claims.

100: electromagnetic expansion valve 10: electromagnetic coil structure
110: coil assembly 111: plastic sealing casing
112: coil 113: pin
120: insulation protection plate 120a: main body
1201: fixed part 1202: stretched part
120b: connecting portion 120c: welding line
121: receiving cavity 122: outlet
1211: fixed cavity 1212: elongate cavity
123: turn-up unit 124: support surface
130: sealant 131: sealing surface
140: lead assembly 141: lead
142: circuit board 20: valve body structure
21: housing 211: connecting member

Claims (11)

It includes a coil assembly 110 , an insulation protection plate 120 , a sealant 130 , and a lid assembly 140 ,
The coil assembly 110 includes a plastic sealing casing 111 and a coil 112 accommodated and fixed in the plastic sealing casing 111,
The insulation protection plate 120 is installed on the side wall 1111 of the plastic sealing casing 111, and a receiving cavity 121 having an outlet 122 between the side walls 1111 of the plastic sealing casing 111. forming, the accommodating cavity 121 includes a fixed cavity 1211 and an extension cavity 1212 communicating with each other, and the extension cavity 1212 is installed at one end adjacent to the outlet 122;
The sealant 130 is accommodated and solidified in the fixed cavity 1211, and a sealing surface 131 is formed at one end of the sealant 130 close to the outlet 122,
The lead assembly 140 includes a lead 141 , and one end of the lead 141 is embedded in the sealant 130 to be electrically connected to the coil 112 , and the other end is connected to the outlet 122 from the outlet 122 . protruding,
A support surface 124 is provided at one end of the insulation protection plate 120 close to the outlet 122 , and the insulation protection plate 120 includes a main body 120a, and is separated from the support surface 124 from the support surface 124 . Electromagnetic coil structure, characterized in that the distance from which the lead (141) protrudes from the sealing surface (131) is greater than the distance from the main body (120a) to the plastic sealing casing (111). According to claim 1,
The insulating protective plate 120 includes a fixing part 1201 and an extending part 1202 respectively provided at a distance from the side wall 1111 of the plastic sealing casing 111, and the extending part 1202 is the outlet. It is provided close to 122, and forms the fixing cavity 1211 between the fixing part 1201 and the side wall 1111 of the plastic sealing casing 111, and the extending part 1202 and the plastic sealing part. Electromagnetic coil structure, characterized in that the elongation cavity (1212) is formed between the sidewalls (1111) of the casing (111). 3. The method of claim 2,
The gap between the stretched part 1202 and the side wall 1111 of the plastic sealing casing 111 is smaller than the gap between the fixing part 1201 and the side wall 1111 of the plastic sealing casing 111 which is an electromagnetic coil structure. 3. The method of claim 2,
An electromagnetic coil structure, characterized in that a turn-up portion 123 is provided on the edge of the stretching portion 1202. 5. The method of claim 4,
An electromagnetic coil structure, characterized in that the included angle between the turn-up part 123 and the extending direction of the insulating protective plate 120 is an acute angle. According to claim 1,
The lead 141 is abutted and supported on the support surface 124 , and one end of the plastic sealing casing 111 adjacent to the outlet 122 is provided with a fixing surface 1112 , and the support surface 124 . ) to the point where the lead (141) protrudes from the sealing surface (131) is greater than the distance from the support surface (124) to the fixing surface (1112), the electromagnetic coil structure. delete According to claim 1,
A mounting portion 1113 is provided on the side wall 1111 of the plastic sealing casing 111 , and the insulation protection plate 120 is mounted on the mounting portion 1113 , and the insulation protection plate 120 and the mounting portion 1113 Electromagnetic coil structure, characterized in that the receiving cavity (121) is formed between the surfaces. According to claim 1,
The coil assembly 110 further includes a pin 113 , the lead assembly 140 further includes a circuit board 142 , the pin 113 is fixed to the plastic sealing casing 111 and the One end of the pin 113 is electrically connected to the coil 112 , the other end is accommodated in the fixed cavity 1211 , and the circuit board 142 is accommodated in the fixed cavity 1211 to accommodate the sealant 130 . ) is connected to one end of the lead 141 embedded in, and the pin 113 is inserted and connected to the circuit board 142 to be electrically connected to the circuit board 142 so that the lead 141 and the coil An electromagnetic coil structure, characterized in that it realizes an electrical connection between (112). An electromagnetic coil structure according to any one of claims 1 to 6 and 8 to 9,
The valve body structure 20 includes a housing 21 forming a hollow structure, a rotor accommodated in the housing 21, and a valve needle electrically connected to the rotor, and the plastic sealing casing 111 is the housing. Installed at one end of (21), characterized in that the rotor and the coil (112) are matched, the electromagnetic expansion valve. An air conditioner system comprising the electronic expansion valve according to claim 10 .

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