CN210026953U - Flow control device and heat exchange system - Google Patents

Abstract

A flow control device and a heat exchange system comprising the same are provided, wherein the flow control device comprises a valve body, a first valve component and a second valve component, the valve body comprises a first channel and a second channel, at least part of the first valve component is accommodated in the first channel, part of the second valve component is movably accommodated in the second channel, the flow control device is provided with a throttling structure and a straight-through structure at the same time, the throttling function or the straight-through function can be selected according to the application requirement of the heat exchange system, the product integration level is high, the structure is compact, the pipeline connection is simplified, and the occupied space is reduced.

Description

Flow control device and heat exchange system

[ technical field ] A method for producing a semiconductor device

The utility model relates to a flow control device and including this flow control device's heat transfer system.

[ background of the invention ]

In different working modes of the vehicle heat pump air conditioning system, the flow modes of working media are different, the working media may need to flow in two directions to form different loops to exchange heat with air, so as to achieve the cooling or heating effect, a valve can be usually arranged in the system loop to selectively open or close corresponding branch branches, and particularly the flow mode of the working media can be controlled in the system loop in a mode of combining a throttle valve and a check valve, so that the connection of the throttle valve, the check valve and a system pipeline is involved, the pipeline connection is complex, and the occupied space is large.

[ Utility model ] content

An object of the utility model is to provide a flow control device and including this flow control device's heat transfer system, product compact structure is favorable to simplifying the tube coupling and reducing occupation space.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flow control device comprising a valve body, a valve member, the flow control device having a first port and a second port, the valve body includes a first port, a second port, a third port, a first passage, and a second passage, the first passage communicates the first port and the second port through the first valve port, the second passage communicates the second port and the third port through the second valve port, the first passage and the second passage have the second port in common, the valve body further includes a first mounting portion, the first mounting part is provided with a first mounting cavity which is communicated with the first channel, the valve member includes a first valve member and a second valve member, at least a portion of the first valve member being received in the first mounting cavity and the second valve member being received in the second channel.

The utility model provides a heat exchange system, includes compressor, heat exchanger and pipeline subassembly, heat exchange system still includes the flow control device, the flow control device is foretell flow control device, the heat exchanger includes first heat exchanger, second heat exchanger and third heat exchanger, working medium flow direction is different when carrying out refrigeration and heating among the heat exchange system, the second heat exchanger with the parallelly connected setting of third heat exchanger.

The utility model provides a pair of flow control device and heat transfer system including this flow control device, wherein flow control device includes the valve body, first valve part and second valve part, the valve body includes first passageway, second passageway and first installation cavity, first installation cavity and first passageway intercommunication, at least partial first valve part holding in first installation cavity, second valve part holding in the second passageway, flow control device possesses throttle structure and direct structure simultaneously, can select throttle function or direct function according to the needs that heat transfer system used, product compact structure is favorable to simplifying the pipe connection and reducing occupation space.

[ description of the drawings ]

FIG. 1 is a front view schematic of an embodiment of a flow control device;

FIG. 2 is a schematic cross-sectional view of the flow control device of FIG. 1;

FIG. 3 is a cross-sectional structural view of the valve body of FIG. 2;

FIG. 4 is a schematic view of another cross-sectional configuration of the flow control device of FIG. 1;

FIG. 5 is a perspective view of the second valve component of FIG. 2;

FIG. 6 is a cross-sectional structural view of the second valve component of FIG. 5;

FIG. 7 is a system connection schematic diagram of a first embodiment of the heat exchange system for refrigeration with the flow control device of FIG. 1, with the working medium flow direction shown in solid lines;

fig. 8 is a schematic connection diagram of the heat exchange system of the first embodiment in fig. 7 for heating, and the flow direction of the working medium is indicated by a solid line;

fig. 9 is a schematic view showing the connection of a heat exchange system of a second embodiment to which the flow control device of fig. 1 is applied.

[ detailed description ] embodiments

The invention will be further described with reference to the following drawings and specific embodiments:

referring to fig. 1 and 2, the flow control device 1 includes a valve body 2, a first valve member 3, a second valve member 4, the first valve member 3 is connected with the valve body 2, the second valve member 4 is partially movably installed inside the valve body 2, the first valve member 3 further includes a rotor assembly 33, a stator assembly 5 and a control portion 6, wherein the stator assembly 5 is located at the periphery of the rotor assembly 33 and is fixedly connected with the valve body 2, the stator assembly 5 is fixedly connected with the control portion 6 and can be electrically and/or signal connected, and the control portion 6 is electrically and/or signal connected with the outside.

Referring to fig. 3, the valve body 2 includes a first port 20, a second port 21, a third port 22, a first mounting portion 24, a first passage 25, and a second passage 26, the first mounting portion 24 has a first mounting cavity 240, the first passage 25 communicates with the first port 20 and the second port 21 through the first mounting cavity 240, the second passage 26 communicates with the second port 21 and the third port 22, that is, the first passage 25 and the second passage 26 have a common second port 21, and two working medium circulation paths arranged in parallel are formed. In this embodiment, the first port 20 and the third port 22 are located on the same side of the valve body 2, the second port 21 is located on the other side of the valve body 2, that is, the second port 21 and the first port 20 are located on different sides of the valve body 2, the opening of the first mounting cavity 240 is located on the other side of the valve body 2, that is, the opening of the first mounting cavity 240 and the first port 20 are located on different sides of the valve body 2, and the opening of the first mounting cavity 240 and the second port 21 are located on different sides of the valve body 2, which is beneficial to avoiding interference, reducing the risk of wrong connection, and simultaneously improving the utilization rate of the valve body 2, and of course according to the requirement of practical application, the first port 20 and the third port 22 may also be located on different sides of the valve body 2, and/or the opening of the first mounting cavity 240 is located on the same side of the first port 20 or the.

Referring to fig. 2, at least a portion of the first valve component 3 is accommodated in the first installation cavity 240, the first valve component 3 includes a first valve core 31 and a first valve seat 32, the first valve seat 32 forms a first valve port 320, the first channel 25 is communicated with the first port 20 and the second port 21 through the first valve port 320, the rotor assembly 33 can drive the first valve core 31 to move under the excitation of the magnetic field of the stator assembly 5, the first valve core 31 can adjust the opening degree of the first valve port 320 by approaching or departing from the first valve port 320, so as to change the flow cross-sectional area of the first channel 25 at the first valve port 320, so that the working medium in the first channel 25 forms a throttle at the first valve port 320.

Referring to fig. 4, the stator assembly 5 includes a cover 51, a coil winding 520 and a first pin 521, the cover 51 is formed by integrally molding the coil winding 520 and the first pin 521 as an injection molding insert, the stator assembly 5 has a hollow cavity 53, the stator assembly 5 is sleeved on the periphery of the rotor assembly 33 through the hollow cavity 53, the stator assembly 5 is fixedly connected to the valve body 2, in this embodiment, the flow control device 1 further includes a pressure plate 7, the cross-sectional shape of the pressure plate 7 is substantially L-shaped, a portion of the pressure plate 7 is fixedly connected to the stator assembly 5, and another portion of the pressure plate 7 is fixedly connected to the valve body 2 through a screw 71.

Referring to fig. 4, the control portion 6 includes a circuit board 60, an outer casing 61 and a cover plate 62, the outer casing 61 and the cover body 51 are integrally injection-molded, the outer casing 61 forms a control cavity 610, the circuit board 60 is accommodated in the control cavity 610, the cover plate 62 is fixedly connected with the outer casing 61, one end of a first pin 521 is encapsulated in the cover body 51 and is electrically connected and/or signal-connected with the coil winding 520, and the other end of the first pin 521 extends into the control cavity 610 and is electrically connected and/or signal-connected with the circuit board 60, so that the stator assembly 5 is electrically connected and/or signal-connected with the control portion 6 through the first pin 521. The control part 6 further comprises an interface part 63, the interface part 63 comprises a second pin 630 and an accommodating cavity 631, at least part of the second pin 630 is fixed with the outer shell 61 by injection molding, one end of the second pin 630 extends into the control cavity 610 to be electrically and/or signal-connected with the circuit board 60, the other end of the second pin 630 extends into the accommodating cavity 631 to be electrically and/or signal-connected with the outside, and thus the control part 6 is electrically and/or signal-connected with the outside through the interface part 63.

Referring to fig. 5 and 6, in the present embodiment, the second valve component 4 includes a guide post 40, an elastic element 41, a retainer ring 42 and a circlip 43, the guide post 40 includes a rod 400, a recess 401 and a second valve core 402, the retainer ring 42 is sleeved on the outer circumference of the rod 400 through a through hole matched with the rod 400, the elastic element 41 is sleeved on the outer circumference of the rod 400, the elastic element 41 is located between the retainer ring 42 and the recess 401, specifically, one end of the elastic element 41 extends into the recess 401 and abuts against the bottom surface of the recess 401, the other end of the elastic element 41 abuts against one end surface of the retainer ring 42, and the elastic element 41 is provided to improve the stability of the second valve core 402 when moving in the second channel.

Referring to fig. 2, the second valve part 4 is partly movably mounted in the second passage 26 of the valve body 2, and in particular, referring to fig. 3, the second passage 26 is provided with a first annular groove 260, a second annular groove 261, the first annular groove 260 being arranged in communication with the second annular groove 261; the second channel 26 further includes a first sidewall 262, the first sidewall 262 having a second port 263, the second port 263 being disposed further from the second port 21 than the first port 320. The second valve member 4 extends into the second passage 26, the end of the second spool 402 abuts against the second port 263, and further, a seal can be provided between the second spool 402 and the second port 263 to prevent leakage of the working medium when the second port 263 is in a closed state; a part of the retainer ring 42 is accommodated in the first annular groove 260, a part of the circlip 43 is accommodated in the second annular groove 261, the retainer ring 42 is attached to the circlip 43, wherein the retainer ring 42 is abutted and limited by the step surface of the first annular groove 260 and the abutment surface of the circlip 43 and the retainer ring 42, the circlip 43 is abutted and limited by the step surfaces at both ends of the second annular groove 263, and at this time, the elastic element 41 is compressed and deformed by the retainer ring 42 and the recessed portion 401, which is favorable for reliable abutment of the end of the second valve spool 402 and the second valve port 263. The second valve core 402 is engaged with the second valve port 263, and the second valve core 402 moves in the second channel 26 relative to the second valve port 263 to move between the first position and the second position, so as to control the second valve core 402 to abut against or leave the second valve port 263, and since the aperture or radial dimension of the second valve port 263 is much larger than that of the first valve port 320, the working medium can directly pass through the second valve port 263 with a larger flow area without throttling, that is, the second valve port 263 is arranged as a through valve port.

When the flow rate control device 1 throttles the working medium, as indicated by the solid line in fig. 2, the first port 20 and the third port 22 are inlet ports of the working medium, the second port 21 is an outlet port of the working medium, the inlet working medium pressure of the first port 20 and the third port 22 is greater than the outlet working medium pressure of the second port 21, the second valve member 4 abuts against the second valve port 263 under the working medium pressure difference to close the second valve port 263, and the second valve spool 402 is located at the first position, and the second valve port 263 is closed by the second valve spool 402; the control part 6 controls the stator assembly 5 to generate electromagnetic force, so that the rotor assembly 33 drives the first valve core 31 to move relative to the first valve port 320, thereby forming throttling at the first valve port 320, specifically, working medium flows into the first channel 25 from the first valve port 20, flows out from the second port 21 after throttling through the first valve port 320, and performs throttling and pressure reduction on the working medium.

When the flow control device 1 leads the working medium straight, as the working medium flow direction indicated by the dotted line in fig. 2, the working medium flow path is switched, the second port 21 is the inlet end of the working medium, the first port 20 and the third port 22 are the outlet ends of the working medium, the inlet working medium pressure of the second port 21 is greater than the outlet working medium pressure of the first port 20 and the third port 22, under the working medium pressure difference force, the second valve component 4 opens the second port 263, specifically, the working medium pressure difference force pushes the second valve spool 402, so that the second valve spool 402 compresses the elastic element 41, the working medium pressure difference force pushes the second valve spool 402 to overcome the elastic pressure of the elastic element 41 and move towards the flow direction of the working medium, until the second valve spool 402 moves from the first position of the closed state to the second position of the open state, the second valve spool 263 is opened, at this time, the control portion 6 controls the stator assembly 5 to generate electromagnetic force, so that the rotor assembly 33 drives the first valve spool 31 and the second valve spool 31 When the first port 320 abuts against the second port 263, the working medium flows into the second passage 26 from the second port 21 and flows out from the third port 22 through the second port 263, and the working medium is directly supplied without throttling and pressure reduction.

The flow control device 1 is applicable to heat exchange systems such as a vehicle air conditioning/heat pump system and a battery thermal management system, in this embodiment, taking the vehicle air conditioning system as an example, a working medium takes a refrigerant as an example, referring to fig. 7 and 8, the vehicle air conditioning system 100 mainly includes a compressor 200, a first heat exchanger 300, a second heat exchanger 400, a third heat exchanger 500, a flow control device 1 and a piping assembly, the first heat exchanger 300 may be an external heat exchanger, the second heat exchanger 400 and the third heat exchanger 500 may be internal heat exchangers and are arranged in parallel to be used alternatively in different operation modes, wherein the piping assembly further includes a first three-way reversing valve 601, a solenoid valve 602, a check valve 603 and a throttle valve 604 arranged in a system loop, and the first three-way reversing valve is mainly used for selectively opening or closing corresponding branch circuits in different operation modes.

When the vehicle air conditioning system 100 is used for cooling (the electromagnetic valve 602 is closed, and the throttle valve 604 is opened), as indicated by a solid line in fig. 7 by the working medium flowing direction, the compressor 200 compresses the gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant flows to the first heat exchanger 300 through the first three-way reversing valve 601, and exchanges heat with ambient air in the first heat exchanger 300, and the refrigerant condenses to dissipate heat and heats the ambient air temperature; after the high-temperature and high-pressure refrigerant is condensed and radiated by the first heat exchanger 300, the high-temperature and high-pressure refrigerant is changed into a normal-temperature and high-pressure liquid refrigerant, the normal-temperature and high-pressure liquid refrigerant flows to the flow control device 1, and specifically flows to the second port 21 of the flow control device 1, the second valve port 263 is opened under the action of the pressure difference of the refrigerant, the normal-temperature and high-pressure liquid refrigerant flows through the second valve port 263 and then directly flows out from the third port 22, flows to the throttling valve 604 after flowing through the liquid reservoir 605 (at the moment; after the normal-temperature high-pressure liquid refrigerant is throttled and depressurized by the throttle valve 604, part of the refrigerant is vaporized to become a low-temperature low-pressure refrigerant (gas-liquid two-phase), and the low-temperature low-pressure refrigerant flows through the third heat exchanger 500 again to exchange heat with the indoor air, absorbs a large amount of heat of the indoor air, reduces the temperature of the indoor air, and then becomes a gaseous refrigerant to return to the compressor 200 for the next working cycle.

When the vehicle air conditioning system 100 is used for heating (the electromagnetic valve 602 is opened, and the throttle valve 604 is closed), as indicated by a solid line in fig. 8 by the working medium flowing direction, the compressor 200 compresses the gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant flows to the second heat exchanger 400 after the flow path is switched by the first three-way reversing valve 601, and exchanges heat with the indoor air in the second heat exchanger 400, and the refrigerant condenses to dissipate heat and heats the indoor air temperature; the high-temperature high-pressure gaseous refrigerant is condensed by the second heat exchanger 400 to be radiated and then changed into normal-temperature high-pressure liquid refrigerant, the refrigerant flows to the check valve 603, the check valve 603 is in one-way conduction under the action of the pressure difference of the refrigerant, the normal-temperature high-pressure liquid refrigerant flows to the liquid reservoir 605 after flowing through the check valve 603, the liquid refrigerant is gathered by the liquid reservoir 605 and flows to the flow control device 1, and specifically flows to the first port 20 and the third port 22 of the flow control device 1, the second valve port 263 is closed under the action of the pressure difference of the refrigerant, namely the second channel 26 is closed, at the moment, the flow control device 1 controls the stator assembly 5 to generate electromagnetic force, so that the rotor assembly 33 drives the first valve core 31 to act, the first valve port 320 is opened and forms throttling, after the normal-temperature high-pressure liquid, to the first heat exchanger 300; the low-temperature and low-pressure refrigerant exchanges heat with ambient air in the first heat exchanger 300, absorbs heat of the ambient air, reduces the temperature of the ambient air, and then becomes a gaseous refrigerant, and the gaseous refrigerant flows through the solenoid valve 602 and returns to the compressor 200 to perform the next working cycle.

Of course, as other embodiments, in the vehicle air conditioning system 100 ', the check valve 603 and the throttle valve 604 can be replaced by the flow control device 1, specifically referring to fig. 9, in the second embodiment, the vehicle air conditioning system 100 ' includes the compressor 200, the first heat exchanger 300, the second heat exchanger 400, the third heat exchanger 500, the flow control device 1, and a pipeline assembly including the first three-way reversing valve 601, the second three-way reversing valve 606, and the solenoid valve 602, in the second embodiment, the vehicle air conditioning system 100 ' operates in the cooling or heating mode basically the same as the first embodiment, except that the check valve 603 and the throttle valve 604 in the first embodiment are implemented by the flow control device 1, and the flow control device 1 is implemented by the second three-way reversing valve 606 to communicate with the second heat exchanger 400 and the third heat exchanger 500 alternatively, the specific cooling or heating operation is not described herein.

The flow control device 1 can realize throttling and reverse direct connection, can be switched according to the application requirement of a heat exchange system, and is favorable for simplifying pipeline connection; meanwhile, the flow control device 1 has high integration level and compact structure, is beneficial to reducing the occupied space in a heat exchange system, has relatively simple structure and is convenient to manufacture and process.

It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions and modifications thereof without departing from the spirit and scope of the present invention can be modified or replaced by other technical solutions and modifications by those skilled in the art.

Claims (7)

1. A flow control device comprising a valve body, a valve member, characterized in that: the flow control device is provided with a first valve port and a second valve port, the valve body comprises a first port, a second port, a third port, a first channel and a second channel, the first channel is communicated with the first port and the second port through the first valve port, the second channel is communicated with the second port and the third port through the second valve port, the first channel and the second channel share the second port, the valve body further comprises a first mounting portion, the first mounting portion is provided with a first mounting cavity, the first mounting cavity is communicated with the first channel, the valve component comprises a first valve component and a second valve component, at least part of the first valve component is accommodated in the first mounting cavity, and the second valve component is accommodated in the second channel.

2. The flow control device of claim 1, wherein: the first valve component comprises a first valve core, the second valve component comprises a second valve core, the first valve core can move relative to the first valve port, the second valve core can move relative to the second valve port, the aperture or radial size of the second valve port is far larger than that of the first valve port, the second valve port is far away from the second valve port than the first valve port, the first channel is a throttling channel, and the second channel is a through channel.

3. The flow control device of claim 2, wherein: when the flow control device throttles, the first port is an inlet end, the second port is an outlet end, the first valve core acts relative to the first valve port under the action of the driving part, the first valve port is opened, the second valve core abuts against the second valve port under the action of differential pressure of working media, and the second valve port is closed;

when the flow control device is used for straight-through connection, the second port is an inlet end, the third port is an outlet end, the second valve core acts relative to the second valve port under the action of working medium pressure difference, the second valve port is opened, the first valve core is abutted to the first valve port, and the first valve port is closed.

4. A flow control device according to claim 3, wherein: the second valve component comprises an elastic element, and the second valve core can close the second valve port and is positioned at a first position under the action of elastic pressure of the elastic element and/or differential pressure of working media; or under the action of the pressure difference of the working medium, the second valve core compresses the elastic element and overcomes the elastic pressure of the elastic element to move to the second position in the flow direction of the working medium, and the second valve port is opened.

5. A flow control device according to any one of claims 1 to 4 wherein: the first port and the third port are arranged on the same side of the valve body, the second port is arranged on one side of the valve body, the first installation cavity is arranged on one side of the valve body, and the three sides are different sides of the valve body.

6. The utility model provides a heat transfer system, includes compressor, heat exchanger and pipeline subassembly, its characterized in that: the heat exchange system further comprises a flow control device, the flow control device is the flow control device in any one of claims 1 to 5, the heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, the flow direction of a working medium in the heat exchange system is different when refrigeration and heating are carried out, and the second heat exchanger and the third heat exchanger are arranged in parallel.

7. The heat exchange system of claim 6, wherein: when the heat exchange system carries out refrigeration, high-temperature and high-pressure gaseous refrigerant provided by the compressor is condensed and radiated by the first heat exchanger, then is changed into normal-temperature and high-pressure liquid refrigerant, flows to the flow control device, directly flows out through a second channel of the flow control device, is changed into low-temperature and low-pressure two-phase refrigerant by the throttling and pressure reduction effect, flows to the third heat exchanger, and is changed into gaseous refrigerant after the low-temperature and low-pressure two-phase refrigerant flowing through the third heat exchanger absorbs heat, and then returns to the compressor for the next working cycle;

when the heat exchange system heats, the high-temperature high-pressure gaseous refrigerant provided by the compressor is condensed and radiated by the second heat exchanger, then becomes a normal-temperature high-pressure liquid refrigerant and flows to the flow control device, the high-temperature high-pressure gaseous refrigerant is throttled by the first channel of the flow control device and then becomes a low-temperature low-pressure two-phase refrigerant and flows to the first heat exchanger, and the low-temperature low-pressure two-phase refrigerant flows through the first heat exchanger and absorbs heat and then becomes a gaseous refrigerant and returns to the compressor to perform the next working cycle.

Images