CN110953390A

CN110953390A - Throttling element, thermal management assembly, cooling system and throttling element manufacturing method

Info

Publication number: CN110953390A
Application number: CN201911145380.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2017-05-09
Filing date: 2017-05-09
Publication date: 2020-04-03
Also published as: CN111255933A; CN108869830A

Abstract

A throttling element and its manufacturing method, heat management assembly and cooling system, the throttling element includes the valve core assembly, automatically controlled department and stator module, the valve core assembly includes the valve base, valve core and rotor module, the valve base forms the valve port, the valve core moves and changes the aperture of the valve port relative to the valve base, the automatically controlled department controls the stator module, the rotor module drives the movement of the valve core, the throttling element also includes the sensor, the automatically controlled department includes the electric control board, stator module and sensor are all connected with electric control board directly electrically, the heat management assembly and cooling system include the above throttling element; convenient equipment reduces and reveals.

Description

Throttling element, thermal management assembly, cooling system and throttling element manufacturing method

This document is a divisional application for patent document No. 201710319514.7

Technical Field

The invention relates to a cooling system and parts thereof.

Background

The cooling system comprises a compressor, an evaporator, a condenser and a throttling element, and in order to improve the flow control precision of the working medium, the cooling system also comprises a sensor arranged on a pipeline, and a controller acquires a value fed back by the sensor according to a corresponding control program. Thus, the sensor and the throttling element are connected to the cooling system through the pipes, respectively, which may cool the system and complicate the assembly process.

Therefore, there is a need for improvement of the prior art to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a throttling element, a manufacturing method thereof, a thermal management assembly and a cooling system, which have the advantages of high product integration level, convenience in assembly and reduction of connecting wire harnesses.

In order to achieve the purpose, the invention discloses a throttling element which can be connected to a cooling system, the throttling element comprises a valve core assembly, an electric control part and a stator assembly, the valve core assembly comprises a valve seat, a valve core and a rotor assembly, the valve seat is provided with a valve port, the valve core can move relative to the valve seat and change the opening degree of the valve port, the electric control part can control the stator assembly, the rotor assembly drives the valve core to move, the throttling element further comprises a sensor, the sensor comprises an induction head, the induction head can be directly or indirectly contacted with a working medium in the cooling system, the electric control part comprises an electric control plate, and the stator assembly and the sensor are electrically connected with the electric control plate.

The sensor comprises a body, an induction head and pin needles, wherein the induction head and the pin needles are respectively arranged at two ends of the body, and the pin needles are directly electrically connected with the electric control board.

The automatically controlled portion still includes the cover body, the cover body is formed with cover body inner chamber, automatically controlled board sets up in cover body inner chamber, the cover body includes casing and lower casing, go up the casing with the casing takes shape respectively and fixed connection down, the casing is formed with the through-hole down, at least the pin needle can pass the through-hole position, the sensor with casing welded seal down.

The body includes guide part and main part, the diameter of guide part is less than the diameter of main part, the guide part with be formed with the step face between the main part, at least part the bore of through-hole is less than the diameter of main part, the guide part with the pin needle is connected, the main part is located the guide part with between the pin needle, the guide part with the pin needle all passes the through-hole gets into cover body inner chamber, the restriction of step face the sensor stretches into cover body inner chamber's distance, the main part with casing welded seal down.

The throttling element further comprises a channel forming body, the channel forming body comprises a first inlet, a first outlet, a second inlet and a second outlet, a first channel is formed between the first inlet and the first outlet, a second channel is formed between the second inlet and the second outlet, the valve seat is at least partially arranged in the first channel or a first cavity communicated with the first channel, the sensing head is located in the second channel or a second cavity communicated with the second channel, the sensor is fixedly connected and sealed with the channel forming body in a direct welding mode or fixedly connected and sealed through a first limiting portion, and the first limiting portion at least can limit the rotation of the sensor and the channel forming body.

The first limiting portion comprises a communicating hole and an external thread section, the main body portion of the sensor can penetrate through the communicating hole, the channel forming body corresponds to the position of the second cavity and comprises an internal thread section, the body further comprises a flange portion, the flange portion is located between the main body portion and the pin, the outer diameter of the flange portion is larger than that of the main body portion, the flange portion cannot pass through the communicating hole, the lower end face of the flange portion is in contact with the channel forming body, the first limiting portion is sleeved on the outer periphery of the main body portion and is limited through the flange portion, and the external thread section is in threaded connection with the internal thread section.

The sensor with be provided with the sealing washer between the channel forming body, the body still includes connecting portion, connecting portion are located between flange portion and the inductive head, the diameter of connecting portion is less than the diameter of main part, connecting portion with the lower terminal surface of flange forms the step portion, the sealing washer is pressed in between the lower terminal surface of flange and the channel forming body.

The throttling element further comprises a limiting pin, the channel forming body is provided with a first installation part, the flange part is provided with a second installation part, the limiting pin is installed between the first installation part and the second installation part, and the limiting pin limits the installation position of the sensor relative to the channel forming body.

First spacing portion includes jump ring and spacer pin, the passageway formed body is provided with the ring channel, the body includes flange portion, the jump ring can inlay in the ring channel, the jump ring is injectd flange portion to the removal of passageway formed body top, the lower terminal surface of flange portion with the contact of passageway formed body, the passageway formed body includes first installation department, flange portion includes the second installation department, the spacer pin set up in first installation department with between the second installation department.

The sensor with be provided with the sealing washer between the channel forming body, the body still includes connecting portion, connecting portion are located the main part with between the inductive head, the diameter of connecting portion is less than the diameter of main part, connecting portion are provided with the annular groove, the sealing washer is located the annular groove.

The lower shell and the stator assembly are fixed in an injection molding mode, the electric control portion and the stator assembly are arranged on the same side of the channel forming body side by side, the electric control plate is perpendicular to the sensor, and the sensor is parallel to the central shaft of the valve core.

The lower shell and the stator assembly are fixed in an injection molding mode, the electric control portion and the stator assembly are arranged on the same side of the channel forming body in parallel, the electric control plate and the sensor are arranged vertically, and the sensor and the central shaft of the valve core are arranged in parallel.

The invention also discloses a heat management assembly, which comprises a throttling element and a heat exchanger, wherein the throttling element and the heat exchanger are connected into an integrated unit, the throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, the throttling element comprises a valve core assembly, a stator assembly, an electric control part and a sensor, the valve core assembly comprises a valve seat, a valve core and a rotor assembly, wherein at least part of the valve seat is arranged between the first inlet and the first outlet, the valve core is matched with the valve seat to change the flow of a working medium in the first channel, the electric control part comprises an electric control plate, the sensor comprises a main body part, an induction head and a pin, the induction head is arranged between the second inlet and the second outlet to form a second channel or is arranged between the second inlet and the second outlet, the second channel or a second cavity communicated with the second channel, and the pin needle is electrically connected with the electric control board.

The heat exchanger comprises a third channel and a fourth channel, the third channel is not communicated with the fourth channel, and the first channel is communicated with the second channel through the third channel.

The heat exchanger comprises a third channel and a fourth channel, the third channel is not communicated with the fourth channel, the first channel is communicated with the third channel, and the second channel is communicated with the fourth channel.

The invention also discloses a method for manufacturing the throttling element, wherein the throttling element comprises a stator assembly, an electric control part, a valve core assembly, a sensor and a channel forming body, the valve core assembly comprises a valve core, a valve seat and a rotor assembly, the electric control part comprises an electric control plate and a cover body, and the method comprises the following steps:

a1, mounting the valve core assembly on a channel forming body;

a2, fixing the sensor and the channel forming body;

a3, fixing the stator assembly and the channel forming body;

a4, mounting an electric control board, and electrically connecting the electric control board with the stator assembly and the sensor;

a5, sealing of the housing that will be used to house the electronic control board.

The invention also discloses a cooling system, which comprises a compressor, an evaporator, a condenser and a first throttling element, wherein the first throttling element is arranged between the condenser and the evaporator, and the cooling system is characterized in that: the first throttling element comprises a valve core assembly, a stator assembly, an electric control part and a sensor, the valve core assembly comprises a valve core, a valve seat and a rotor assembly, the electric control part comprises an electric control plate, the first throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, a first channel is formed between the first inlet and the first outlet, a second channel is formed between the second inlet and the second outlet, at least part of the valve seat is arranged in the first channel or a first cavity communicated with the first channel, the valve core is matched with the valve seat to change the flow of a refrigerant in the first channel, the sensor comprises a main body part, an induction head and a pin, the induction head is arranged in the second channel or a second cavity communicated with the second channel, and the pin is directly electrically connected with the electric control plate, the evaporator communicates the first passage and the second passage.

The cooling system further comprises a battery cooling system, the battery cooling system comprises a thermal management assembly, the thermal management assembly comprises a heat exchanger and a second throttling element, the second throttling element is integrated with the heat exchanger, the second throttling element comprises a valve core assembly, a stator assembly, an electric control portion and a sensor, the valve core assembly comprises a valve core, a valve seat and a rotor assembly, the electric control portion comprises an electric control plate, the first throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, a first passage is formed between the first inlet and the first outlet, a second passage is formed between the second inlet and the second outlet, at least part of the valve seat is arranged in the first passage or a first cavity communicated with the first passage, and the valve core and the valve seat are matched to control the flow rate of refrigerant of the first passage, the sensor comprises a main body part, an induction head and a pin, the induction head is arranged in the second channel or a second cavity communicated with the second channel, the pin is directly electrically connected with the electric control board, the heat exchanger comprises a third channel and a fourth channel which are isolated from each other, the first channel is communicated with the second channel through the third channel or the first channel is communicated with the third channel, and the second channel is communicated with the fourth channel.

In this application, the throttling element is integrated with the sensor, through with sensor and automatically controlled board lug connection, is integrated as a whole with sensor and throttling element, reduces the connecting wire harness, and the equipment is convenient.

Drawings

FIG. 1 is a schematic view of one embodiment including a cooling system;

FIG. 2 is a schematic structural diagram of one embodiment of a thermal management assembly;

FIG. 3 is a schematic view of one directional perspective of a throttling element;

FIG. 4 is a schematic view of another directional perspective of the throttling element;

FIG. 5 is a front view schematic illustration of a first embodiment of a throttling element;

FIG. 6 is a schematic diagram of the right-hand side view of the throttling element of FIG. 5;

FIG. 7 is a schematic top view of the throttling element of FIG. 5;

FIG. 8 is a schematic view of a cross-sectional view taken along line B-B of the throttling element of FIG. 6;

FIG. 9 is a schematic cross-sectional view taken along the line A-A of the throttling element of FIG. 5;

FIG. 10 is a schematic cross-sectional view taken along line D-D of the throttling element of FIG. 5;

FIG. 11 is a front view in schematic form of a second embodiment of a throttling element;

FIG. 12 is a cross-sectional view of a second embodiment of a throttling element

FIG. 13 is a front schematic view of a third embodiment of a throttling element;

FIG. 14 is a cross-sectional view of a third embodiment of a throttling element

FIG. 15 is a front schematic view of a fourth embodiment of a throttling element;

FIG. 16 is a cross-sectional view of a fourth embodiment of a throttling element;

FIG. 17 is a cross-sectional view of a fifth embodiment of a throttling element;

FIG. 18 is a schematic illustration of one of the steps of assembly of the throttling element;

FIG. 19 is a schematic illustration of a second step in the assembly of the throttling element;

FIG. 20 is a schematic illustration of a third step of assembly of the throttling element;

fig. 21 is a schematic structural view of a passage forming body of the first embodiment of the throttling element.

Detailed Description

The invention will be further described with reference to the following figures and specific examples:

the cooling system is mainly applied to vehicles or household appliances, and will be described below as a cooling system for a vehicle, which includes at least an air conditioning system, but of course, as the battery is applied to the vehicle, the cooling system for the vehicle may also include a battery cooling system. When the cooling system works, the air conditioning system comprises a refrigerant which circularly flows, and the battery cooling system comprises a working medium which circularly flows, wherein the working medium can be water, oil, a mixture containing water or oil, the refrigerant and the like.

FIG. 1 is a schematic diagram of one embodiment of a cooling system, in this example, including an air conditioning system including a compressor 10, a condenser 20, a first throttling element 30, and an evaporator 40, and a battery cooling system; when the air conditioning system works, the refrigerant is compressed into a high-temperature high-pressure refrigerant by the compressor 10, the high-temperature high-pressure refrigerant is radiated by the condenser 20 to become a normal-temperature high-pressure refrigerant, and the normal-temperature high-pressure refrigerant enters the evaporator 40 through the first throttling element 30; since the pressure of the refrigerant at normal temperature and high pressure is reduced after passing through the first throttling element 30, the refrigerant is vaporized and changed into a low-temperature refrigerant, and the low-temperature refrigerant absorbs a large amount of heat through the evaporator 40 and returns to the compressor 10; the battery cooling system comprises a heat management assembly 50 and a pump 60, wherein refrigerant in the air conditioning system exchanges heat with working medium of the battery cooling system in the heat management assembly 50, and the pump 60 provides power for the working medium of the battery cooling system to move circularly.

Fig. 2 is a schematic structural diagram of an embodiment of the thermal management assembly 50, in this embodiment, the thermal management assembly 50 includes a heat exchanger 70 and a second throttling element 80, the heat exchanger 70 and the second throttling element 80 are integrated into a whole, refrigerant in the air conditioning system exchanges heat with working medium of the battery cooling system in the heat exchanger 70, in this embodiment, the structure of the first throttling element 30 is the same as that of the second throttling element 80, and the first throttling element 30 and the second throttling element 80 are collectively referred to as throttling elements for description. Of course, the first throttling element and the second throttling element may have different structures, or the battery cooling system may not use a throttling element, and it is within the scope of the present invention that one of the first throttling element and the second throttling element is the same structure as the throttling element of the present invention.

With reference to fig. 3 and 4, the throttling element is formed with a first inlet 11, a second inlet 12, a first outlet 13 and a second outlet 14, a first passage is formed between the first inlet 11 and the first outlet 13, a second passage is formed between the second inlet 12 and the second outlet 14, the throttling element includes a sensor, the sensor includes a sensing head, the sensing head is disposed in the second passage or a cavity directly communicated with the second passage, so that the sensor can detect the temperature or pressure or both of the refrigerant or the working medium in the second passage.

For an air conditioning system, the evaporator 40 includes a third passage and a fourth passage, the first passage communicating with the third passage, the third passage communicating with the fourth passage, and the fourth passage communicating with the second passage, and the sensor may detect the temperature or pressure or both of the temperature and pressure of the refrigerant in the second passage.

For the battery cooling system, the heat exchanger 70 includes a third channel and a fourth channel (not shown in the figure), the third channel and the fourth channel are not communicated with each other, the first channel and the second channel of the throttling element and the third channel and the fourth channel of the heat exchanger 70 at least include the following two connection forms, the first channel is communicated with the second channel through the third channel, at this time, all the refrigerant flows in the first channel, the second channel and the third channel, and the working medium flows in the fourth channel; in the second mode, the first channel is communicated with the three channels, the second channel is communicated with the fourth channel, at the moment, refrigerant flows in the first channel and the third channel, and working medium flows in the second channel and the fourth channel. When the connection between the passage of the throttling element and the passage of the heat exchanger is in a first mode, namely the first passage is communicated with the second passage through a third passage, the working pressure or temperature or pressure and temperature of the refrigerant in the second passage is detected by the sensor; when the connection between the passage of the throttling element and the passage of the heat exchanger is in the second mode, i.e. the first passage communicates with the three passages and the second passage communicates with the fourth passage, the sensor detects the temperature or the pressure or both the temperature and the pressure of the working medium in the second passage. In the embodiment, the throttling element comprises the sensor, and part of the channel is formed on the throttling element, so that connection points of parts and pipelines are reduced, the assembly process is simplified, and the sealing performance of the system is improved; in this embodiment, the throttling element can detect the pressure and temperature parameters of the refrigerant or the pressure and temperature parameters of the working medium according to different connections of the pipelines, which is beneficial to improving the universality of the throttling element.

Fig. 5 to 10 are schematic structural diagrams of a first embodiment of the throttling element, the throttling element includes an electric control portion 1, a stator assembly 2, a channel forming body 3, a valve core assembly 4 and a sensor 5, in this embodiment, the electric control portion 1 and the stator assembly 2 are arranged side by side on the same side of the channel forming body 3, that is, there is no interval stator assembly 2 between the channel forming body 3 and the electric control portion 1, a space side by side with the stator assembly is utilized, which is beneficial to compact structure of the throttling element, so that the radial dimension of the throttling element is miniaturized, and both the electric control portion 1 and the stator assembly 2 are fixedly connected with the channel forming body 3. The throttling element further comprises a pressure plate 68, the cross section of the pressure plate 68 is approximately L-shaped, one part of the pressure plate 68 is fixedly connected with the stator assembly 2, the other part of the pressure plate 68 is fixedly connected with the channel forming body 3 through a screw 69, and thus the stator assembly 2 and the channel forming body 3 are fixed through the pressure plate.

The electric control part 1 comprises a cover body 101 and an electric control board 102 (see fig. 8 and the like), the cover body 101 forms a cover body inner cavity, the electric control board 102 is arranged in the cover body inner cavity, the cover body 101 comprises a lower shell 111 and an upper shell 112, the lower shell 111 and the upper shell 112 are respectively formed separately, in the embodiment, the lower shell 111 and the stator assembly 2 are integrally formed in an injection molding mode, the upper shell 112 and the lower shell 111 are fixedly connected through ultrasonic welding, the electric control board 102 is provided with an electric element and a circuit (not shown in the figure), so that the electric control board 102 can conduct electricity, in the embodiment, the lower shell 111 is formed with a through hole 113, and the sensor 5 penetrates through. Stator module 2 and sensor 5 all directly are connected with automatically controlled board 102 electricity, integrate sensor 5 in the throttling element like this for the function of throttling element is more perfect, and the throttling element provides the installation fixed knot structure of sensor simultaneously, is favorable to the fixed of sensor, and the tie point that such throttling element and cooling system are connected reduces in addition, is favorable to improving cooling system's leakproofness.

Referring to fig. 8, the valve core assembly 4 includes a valve seat 41, a valve core 42 and a rotor assembly 43, the valve seat 41 is fixedly disposed relative to the channel forming body 3, the valve seat 41 forms a valve port 44, the valve core 42 moves relative to the valve seat 41 and controls the opening degree of the valve port 44, and the electric control portion 1 controls the movement of the valve core 42 by controlling the stator assembly 2 and the rotor assembly 43.

In this embodiment, the sensor 5 includes a main body 51, a sensing head 52 and a pin 53, the sensing head 52 and the pin 53 are respectively disposed at two ends of the main body 51, the sensing head 52 is used for sensing the temperature or the pressure or the temperature and the pressure of the environment where the sensing head is located, the pin 53 is electrically connected to the electronic control board 102, in this embodiment, the pin 53 is a press-fit pin, so the pin 53 is electrically connected to the electronic control board 102 through the press-fit, so that the sensor 5 and the electronic control board 102 are assembled without welding, as long as the jack of the electronic control board 102 corresponds to the pin 53 and is in press-fit, the process can be simplified, and meanwhile, the condition of virtual welding is avoided.

In this embodiment, the body 51 includes a guide portion 511 and a main body portion 512, the guide portion 511 is connected to the pin 53, the outer diameter of the guide portion 511 is smaller than the outer diameter of the main body portion 512, so that a first step surface 521 is formed between the guide portion 511 and the main body portion 512, the guide portion 511 and the pin 53 pass through the through hole 113 and extend into the inner cavity of the housing, the first step surface 521 limits the length of the main body 51 extending into the inner cavity of the housing, the first step surface 521 contacts with the outer surface of the lower housing 11 and is ultrasonically welded and fixed to form a seal, and the guide portion 511 extending into the inner cavity of the housing is provided, so that the length of the pin 53 is not too long to be conveniently connected to the electronic control board 102, and the connection strength is further. Certainly, under the condition that the connection between the sensor 5 and the electric control board 102 is not affected, the guide part is not needed, and only the pin 53 extends into the inner cavity of the cover body, the specific scheme is as shown in fig. 17, the main body 51 does not include the guide part, so that the cost of the sensor 5 is favorably reduced, and meanwhile, the strength of the pin 53 is not affected when the electric control board 102 is closer to the outer surface of the lower shell 111, so that the through hole 113 of the lower shell 111 only needs to penetrate through the pin 53, and the sealing of the through hole 113 is achieved by welding.

The main body 51 further includes a flange portion 513 and a connecting portion 514, the connecting portion 514 is connected to the inductive head 52, the flange portion 513 is disposed between the main body 512 and the connecting portion 514, in this embodiment, the outer diameter of the flange portion 513 is larger than the outer diameter of the main body 512, the outer diameter of the connecting portion 514 is smaller than the outer diameter of the main body 512, a second step surface 534 is formed between the connecting portion 514 and the lower end surface of the flange portion 513, and the main body 51 of the sensor is connected to the channel formation body 3.

Referring to fig. 3, 4 and 21, the channel formation body 3 includes a first inlet 11, a first outlet 13, a second inlet 12, a second outlet 14, a first cavity 15 and a second cavity 16, a first channel 17 is formed between the first inlet 11 and the first outlet 13, a second channel 18 is formed between the second inlet 12 and the second outlet 14, the first inlet 11 and the second outlet 14 are located on the same side of the channel formation body 3, the first outlet 13 and the second inlet 14 are located on the same side of the channel formation body 3 to ensure smooth refrigerant circulation, a valve core 42 is disposed in the first cavity 15 communicated with the first channel 17, and at least a sensing head 52 of the sensor 5 is located in the second cavity 16 communicated with the second channel 18.

In the present embodiment, the channel formation body 3 includes the first side wall 31, the first bottom 32, and the second bottom 33 in correspondence with the second chamber 16, and the first side wall 31 is formed with the internal thread portion 34.

The throttle element further includes a first stopper portion 9, and the first stopper portion 9 at least restricts movement of the sensor 5 relative to the passage forming body 3 in the axial direction of the sensor 5. In this embodiment, the first stopper portion 9 includes the communication hole 91 and the male screw section 92, the main body 512 of the sensor can pass through the communication hole 91, the flange portion 513 cannot pass through the communication hole 91, the lower end surface of the flange portion 513 contacts the first bottom portion 32 of the passage forming body 3, the first stopper portion 9 is fitted around the outer periphery of the main body 512 and is stopped by the flange portion 513, and the male screw section 92 is screwed to the female screw section 34, so that the sensor is fixed to the passage forming body, the reliability of fixing the sensor and the passage forming body by screwing is higher than that of other methods, and the sensor looseness caused by different working conditions during use of the throttle element is reduced.

In order to improve the sealing property between the passage forming body and the sensor, a seal ring 96 is provided between the sensor 5 and the passage forming body 3, and the seal ring 96 is pressed between the second step surface 534 and the second bottom portion 33 of the passage forming body; this provides a sealing effect and reduces the risk of leakage of the working medium or refrigerant of the second channel through the second chamber

In order to limit the relative rotation of the sensor and the channel forming body, the throttling element further comprises a second limiting part, the second limiting part comprises a limiting pin 82, a first mounting part 83 and a second mounting part 84, the first mounting part 83 is a concave part formed in the first bottom 32, the concave part is in a barrel shape, the diameter of an opening part of the concave part is slightly larger than that of the limiting pin 82, the second mounting part 83 is a notch formed in the flange part 513, the concave part corresponds to the notch part and the limiting pin 82 is mounted, so that the rotation of the sensor relative to the channel forming body is limited, and the position of the electric control board relative to the channel forming body is fixed, so that the corresponding position of the pin and the electric control board is convenient.

When the throttling element in this embodiment is in operation, refrigerant enters the first channel 17 through the first inlet 11, the valve seat 41 is disposed in the first cavity 15, the valve seat 41 is formed with a valve port 44, the valve element 42 controls the opening degree of the valve port 44 to control the flow rate of the refrigerant in the first channel 17, the refrigerant leaves the first channel 17 through the first outlet 13, the refrigerant or working medium enters the second channel 18 through the second inlet 12, and the sensing head 52 of the sensor 5 detects the pressure or temperature or pressure and temperature parameters in the second channel 18 and feeds back the signal to the electronic control board 102.

FIGS. 18-20 are schematic assembly flow diagrams of a throttling element of the first embodiment; the throttling element comprises a stator assembly, an electric control part, a valve core assembly, a sensor and a channel forming body, wherein the electric control part comprises an electric control plate and a cover body, and the manufacturing method of the throttling element comprises the following steps:

a1, mounting the valve core assembly on the channel forming body;

a2, fixing the sensor and the channel forming body;

a3, fixing the stator assembly and the channel forming body;

a5, fixedly connecting the cover body for accommodating the electric control board.

The valve core assembly in the step a1 comprises a valve core, a valve seat and a rotor assembly, and the step a1 comprises the assembly of the valve core assembly.

Step a2 also includes installing a limit pin, placing the limit pin on the channel forming body, placing the sensor at the first bottom of the channel forming body, sleeving the first limit part, and connecting the first limit part and the channel forming body by screw thread.

Step a2 also includes placing a gasket on the second bottom portion prior to placing the sensor.

Fig. 11 to 12 are schematic structural views of a second embodiment of a throttling element, and compared with the first embodiment, the main differences are that: the channel formation 3 comprises, in correspondence with the second cavity, a first side wall 31, a first bottom 32; the first side wall 31 is formed with a groove 311, the throttle member includes a first stopper portion 9, the first stopper portion 9 at least restricts the movement of the sensor in the sensor axial direction with respect to the passage forming body; the first limiting part 9 comprises a clamp spring 901; the lower surface of the flange portion 513 of the sensor 5 is in contact with the first bottom portion 31, the clamp spring 901 is sleeved on the periphery of the main body portion 512, the diameter of an inner hole of the clamp spring 901 is slightly larger than the outer diameter of the main body portion 512 and smaller than the outer diameter of the flange portion 513, the clamp spring 901 is embedded in the groove 311 of the first side wall 31, the lower end surface of the clamp spring 901 is pressed against the upper end surface of the flange portion 513, the sensor 5 is further pressed against the first bottom portion 31, the sensor 5 is further axially and fixedly connected with the channel formation body 3, and the movement of the sensor relative to the channel formation body. Compared with the first embodiment, in this embodiment, the snap spring is used to fix the sensor and the channel forming body, which is beneficial to reducing the cost while ensuring the connection strength.

Like the first real-time mode, in order to restrict the relative rotation of the sensor and the channel forming body, the throttling element further comprises a second limiting part, the second limiting part comprises a limiting pin 82, a first mounting part and a second mounting part, the first mounting part is a recessed part formed in the first bottom 32, the recessed part is in a barrel shape, the diameter of the opening part of the recessed part is slightly larger than that of the limiting pin 82, the second mounting part 8 is a notch formed in the flange part 513, the recessed part corresponds to the notch part and the limiting pin 82 is mounted, so that the rotation of the sensor relative to the channel forming body is favorably restricted, and the electric control plate is fixed relative to the channel forming body, so that the corresponding positions of the pin and the electric control plate are convenient.

In addition, in the present embodiment, the connecting portion 514 of the sensor 5 is formed with the annular groove 5141, the seal ring 96 is disposed in the annular groove 5141, and the seal ring 96 is pressed and deformed in the radial direction by the sensor 5 and the channel formation body 3 to form a seal; such a configuration facilitates installation of the seal ring 96.

The method for manufacturing the electronic expansion in the present embodiment is different from the method for manufacturing the orifice member of the first embodiment in that: step a2 includes installing a limit pin, placing the sensor at the first bottom of the channel formation body, sleeving the snap spring, and embedding the snap spring in the annular groove 5141 of the channel formation body 3.

Fig. 13 to 14 show a third embodiment of a throttle element, which in this example differs from the second embodiment mainly in that: the channel formation 3 comprises, in correspondence with the second cavity, a first side wall 31, a first bottom 32; the throttle member includes a first stopper portion 9, the first stopper portion 9 at least restricting movement of the sensor in the sensor axial direction with respect to the passage forming body; the first stopper portion 9 includes welding of the upper surface of the flange portion 513 to the channel forming body 3; compared with the first embodiment in which the lower surface of the flange portion 513 of the sensor is in contact with the first bottom portion 32 and the upper surface of the flange portion 513 is welded to the channel forming body 3, in this embodiment, the sensor and the channel forming body are fixed by welding, and the second stopper portion is not required, and in the case where the strength of connection is ensured, no additional parts are required, and the structure of the product is the simplest, which is advantageous in cost reduction.

Fig. 15 to 16 show a fourth embodiment of a throttling element, the main differences in this embodiment compared to the first embodiment being: the length of the sensor 5 is increased, and the electric control plate 102 is located in the axial direction of the stator assembly 5, so that the area of the electric control plate 102 is increased, the setting of a connection point of the sensor 5 is facilitated, meanwhile, the stator assembly 2 can extend in the radial direction, and the size of the throttling element is reduced under the condition that the large-area electric control plate 102 is ensured. The connection manner of the other sensors to the channel forming body and the electric control portion may be the same as that of the first, second, and third embodiments.

The method of manufacturing the throttling element of the fourth embodiment is the same as the method of manufacturing the throttling element of any one of the first, second, and third embodiments.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A throttling element connectable to a cooling system, the throttling element comprising a valve element assembly, an electronic control portion and a stator assembly, the valve element assembly comprising a valve seat, a valve element and a rotor assembly, the valve seat forming a valve port, the valve element being movable relative to the valve seat and varying an opening of the valve port, the electronic control portion being capable of controlling the stator assembly, the rotor assembly driving the movement of the valve element, the throttling element being characterized in that: the throttling element further comprises a sensor, the sensor comprises a sensing head, the sensing head can be in direct or indirect contact with a working medium of the cooling system, the electric control part comprises an electric control board, and the stator assembly and the sensor are electrically connected with the electric control board.

2. A throttling element as recited in claim 1 wherein: the sensor further comprises a body and pin needles, the induction heads and the pin needles are respectively arranged at two ends of the body, and the pin needles are directly electrically connected with the electric control board.

3. A throttling element as recited in claim 1 wherein: the automatically controlled portion still includes the cover body, the cover body is formed with cover body inner chamber, automatically controlled board sets up in cover body inner chamber, the cover body includes casing and lower casing, go up the casing with the casing takes shape respectively and fixed connection down, the casing is formed with the through-hole down, at least the pin needle can pass the through-hole position, the sensor with casing welded seal down.

4. A throttling element according to claim 3, wherein: the body includes guide part and main part, the diameter of guide part is less than the diameter of main part, the guide part with be formed with the step face between the main part, at least part the bore of through-hole is less than the diameter of main part, the guide part with the pin needle is connected, the main part is located the guide part with between the pin needle, the guide part with the pin needle all passes the through-hole gets into cover body inner chamber, the restriction of step face the sensor stretches into cover body inner chamber's distance, the main part with casing welded seal down.

5. The throttling element of claim 4, wherein: the throttling element further comprises a channel forming body, the channel forming body comprises a first inlet, a first outlet, a second inlet and a second outlet, a first channel is formed between the first inlet and the first outlet, a second channel is formed between the second inlet and the second outlet, the valve seat is at least partially arranged in the first channel or a first cavity communicated with the first channel, the sensing head is located in the second channel or a second cavity communicated with the second channel, the sensor is fixedly connected and sealed with the channel forming body in a direct welding mode or fixedly connected and sealed through a first limiting portion, and the first limiting portion at least can limit the rotation of the sensor and the channel forming body.

6. A throttling element according to claim 5, wherein: the first limiting portion comprises a communicating hole and an external thread section, the main body portion of the sensor can penetrate through the communicating hole, the channel forming body corresponds to the position of the second cavity and comprises an internal thread section, the body further comprises a flange portion, the flange portion is located between the main body portion and the pin, the outer diameter of the flange portion is larger than that of the main body portion, the flange portion cannot pass through the communicating hole, the lower end face of the flange portion is in contact with the channel forming body, the first limiting portion is sleeved on the outer periphery of the main body portion and is limited through the flange portion, and the external thread section is in threaded connection with the internal thread section.

7. The throttling element of claim 6, wherein: the sensor with be provided with the sealing washer between the channel forming body, the body still includes connecting portion, connecting portion are located between flange portion and the inductive head, the diameter of connecting portion is less than the diameter of main part, connecting portion with the lower terminal surface of flange forms the step portion, the sealing washer is pressed in between the lower terminal surface of flange and the channel forming body.

8. A restriction element according to claim 6 or 7, wherein: the throttling element further comprises a limiting pin, the channel forming body is provided with a first installation part, the flange part is provided with a second installation part, the limiting pin is installed between the first installation part and the second installation part, and the limiting pin limits the installation position of the sensor relative to the channel forming body.

9. A throttling element according to claim 5, wherein: first spacing portion includes jump ring and spacer pin, the passageway formed body is provided with the ring channel, the body includes flange portion, the jump ring can inlay in the ring channel, the jump ring is injectd flange portion to the removal of passageway formed body top, the lower terminal surface of flange portion with the contact of passageway formed body, the passageway formed body includes first installation department, flange portion includes the second installation department, the spacer pin set up in first installation department with between the second installation department.

10. A throttling element as recited in claim 9, wherein: the sensor with be provided with the sealing washer between the channel forming body, the body still includes connecting portion, connecting portion are located the main part with between the inductive head, the diameter of connecting portion is less than the diameter of main part, connecting portion are provided with the annular groove, the sealing washer is located the annular groove.

11. A throttling element according to any of claims 3 to 10, wherein: the lower shell and the stator assembly are fixed in an injection molding mode, the electric control portion and the stator assembly are arranged on the same side of the channel forming body side by side, the electric control plate is perpendicular to the sensor, and the sensor is parallel to the central shaft of the valve core.

12. A throttling element according to any of claims 3 to 10, wherein: the lower shell and the stator assembly are fixed in an injection molding mode, the electric control portion and the stator assembly are arranged on the same side of the channel forming body in parallel, the electric control plate and the sensor are arranged vertically, and the sensor and the central shaft of the valve core are arranged in parallel.

13. A heat management assembly comprises a throttling element and a heat exchanger, wherein the throttling element and the heat exchanger are connected into an integrated unit, the throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, the throttling element comprises a valve core assembly, a stator assembly, an electric control part and a sensor, the valve core assembly comprises a valve seat, a valve core and a rotor assembly, at least part of the valve seat is arranged between the first inlet and the first outlet, the valve core is matched with the valve seat to change the flow of a working medium in a first channel, the electric control part comprises an electric control plate, the sensor comprises an induction head and a pin needle, the induction head is arranged between the second inlet and the second outlet to form a second channel or is arranged between the second inlet and the second outlet, the second channel or a second cavity communicated with the second channel, and the pin needle is electrically connected with the electric control board.

14. The thermal management assembly of claim 13, wherein: the heat exchanger comprises a third channel and a fourth channel, the third channel is not communicated with the fourth channel, and the first channel is communicated with the second channel through the third channel.

15. The thermal management assembly of claim 13, wherein: the heat exchanger comprises a third channel and a fourth channel, the third channel is not communicated with the fourth channel, the first channel is communicated with the third channel, and the second channel is communicated with the fourth channel.

16. A method of manufacturing a throttling element, the throttling element including a stator assembly, an electrical control portion, a valve core assembly, a sensor, and a channel formation, the valve core assembly including a valve core, a valve seat, and a rotor assembly, the electrical control portion including an electrical control plate and a cover, the method comprising the steps of:

a1, mounting the valve core assembly on a channel forming body;

a2, fixing the sensor and the channel forming body;

a3, fixing the stator assembly and the channel forming body;

17. A cooling system comprising a compressor, an evaporator, a condenser and a first throttling element disposed between the condenser and the evaporator, characterized in that: the first throttling element comprises a valve core assembly, a stator assembly, an electric control part and a sensor, the valve core assembly comprises a valve core, a valve seat and a rotor assembly, the electric control part comprises an electric control plate, the first throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, a first channel is formed between the first inlet and the first outlet, a second channel is formed between the second inlet and the second outlet, at least part of the valve seat is arranged in the first channel or a first cavity communicated with the first channel, the valve core is matched with the valve seat to change the flow of a refrigerant in the first channel, the sensor comprises a main body part, an induction head and a pin, the induction head is arranged in the second channel or a second cavity communicated with the second channel, and the pin is directly electrically connected with the electric control plate, the evaporator communicates the first passage and the second passage.

18. The cooling system of claim 17, wherein: the cooling system further comprises a battery cooling system, the battery cooling system comprises a thermal management assembly, the thermal management assembly comprises a heat exchanger and a second throttling element, the second throttling element is integrated with the heat exchanger, the second throttling element comprises a valve core assembly, a stator assembly, an electric control portion and a sensor, the valve core assembly comprises a valve core, a valve seat and a rotor assembly, the electric control portion comprises an electric control plate, the first throttling element comprises a first inlet, a second inlet, a first outlet and a second outlet, a first passage is formed between the first inlet and the first outlet, a second passage is formed between the second inlet and the second outlet, at least part of the valve seat is arranged in the first passage or a first cavity communicated with the first passage, and the valve core and the valve seat are matched to control the flow rate of refrigerant of the first passage, the sensor comprises a main body part, an induction head and a pin, the induction head is arranged in the second channel or a second cavity communicated with the second channel, the pin is directly electrically connected with the electric control board, the heat exchanger comprises a third channel and a fourth channel which are isolated from each other, the first channel is communicated with the second channel through the third channel or the first channel is communicated with the third channel, and the second channel is communicated with the fourth channel.