Refrigerant three-way proportional reversing valve for automobile

Abstract

The refrigerant three-way proportional reversing valve for the automobile comprises a reversing valve body, and the reversing valve body comprises a valve body, a single valve element and a driving assembly. The two opposite sides of the valve body are each provided with at least one first valve port, the two first valve ports are communicated to form a refrigerant channel, the side walls of the two ends of the refrigerant channel are provided with flow adjusting ports, and the two flow adjusting ports are communicated with second valve ports in the valve body. The second valve port is communicated with the two first valve ports respectively; the valve element is arranged in the refrigerant channel and is coupled with the driving assembly, so that the valve element can do reciprocating motion in the refrigerant channel, and when the valve element is inserted into one of the first valve ports and blocks the first valve port, the other first valve port communicates with the second valve port through a flow adjusting port; when the valve element is located in the middle of the refrigerant channel, the two first valve ports are both communicated with the second valve port. According to the reversing valve, the flow proportion access state of the two outlets necessary for work can be kept without voltage, current and zero power consumption, and the economical efficiency, safety and reliability of the refrigerant three-way valve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle equipment manufacturing, in particular to a three-way proportional reversing valve for automobile refrigerant. Background Art

[0002] The reversing valve is a control valve widely used in pipeline connections to control the reversal of fluids and switch different flow paths. The heating and cooling functions of the air conditioner can be switched on and off by using a three-way proportional reversing valve for automotive refrigerant. The existing three-way valve usually uses at least two solenoid valves to perform separate on-off control on the internal refrigerant path. However, multiple solenoid valves must be maintained in an on-off state with a fixed voltage and current during control, which results in high energy consumption. This places higher requirements on the electrical safety of the equipment and increases the manufacturing cost of the equipment. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model proposes a three-way proportional reversing valve for automotive refrigerant, which can maintain the flow proportional passage state of two outlets required for work without voltage and current and zero power consumption, thereby improving the economy, safety and reliability of the refrigerant valve and making it more convenient to switch the refrigerant passage.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A three-way proportional reversing valve for automobile refrigerant, comprising a reversing valve body, the reversing valve body comprising a valve body, a single valve core and a driving assembly; at least one first valve port is provided on opposite sides of the valve body, the two first valve ports are connected to form a refrigerant channel, the side walls of the refrigerant channel close to the first valve port are respectively provided with flow regulating ports, the valve core is extended in the projection direction of the flow regulating port, the two flow regulating ports are connected to the second valve port on the valve body, so that the second valve port is respectively connected to the two first valve ports;

[0006] The valve core is arranged in the refrigerant channel and coupled with the driving assembly so that the valve core can reciprocate in the refrigerant channel. When the valve core is inserted into one of the first valve ports to seal it, the other first valve port is connected to the second valve port through the flow regulating port; when the valve core is in the middle of the refrigerant channel, both of the first valve ports are connected to the second valve port.

[0007] In one embodiment, the length of the valve core is greater than the distance between the flow regulating ports.

[0008] In one embodiment, a buffer flow channel is further provided in the valve body, the buffer flow channel is arranged parallel to the refrigerant channel, the buffer flow channel is connected to the refrigerant channel through the flow regulating port, and the buffer flow channel is connected to the second interface.

[0009] In one embodiment, the first valve ports are symmetrically arranged on both sides of the valve body.

[0010] In one embodiment, the second valve port is communicated with the middle portion of the buffer flow channel.

[0011] In one embodiment, the first valve port includes a connecting portion and a sealing portion that are connected to each other. The connecting portion has the same diameter everywhere, and the sealing portion is funnel-shaped and its diameter gradually increases toward a side close to the valve core.

[0012] In one embodiment, the driving assembly includes a motor and a gear. The gear is mounted on the output shaft of the motor. A rack is axially arranged on the outer side of the valve core. The valve core is meshed with the gear through the rack. When the motor is started, the gear drives the valve core to move axially in the refrigerant channel.

[0013] In one embodiment, the valve core includes a cylindrical valve core body and blocking portions at both ends, and the diameter of the blocking portions gradually decreases toward the two ends.

[0014] In one embodiment, the valve body includes an upper cover, a channel bin and a lower cover, the upper cover and the lower cover are respectively provided with the first valve port, the refrigerant channel is provided in the channel bin, and the upper cover and the lower cover are respectively connected to the upper and lower sides of the channel bin by screws.

[0015] In one embodiment, a sealing ring is provided on the spacer sleeve on the valve core.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] In this embodiment, a single driving component drives the valve core to reciprocate axially in the refrigerant channel, thereby realizing the flow direction control of the refrigerant. Since the flow regulating port is arranged on the side of the refrigerant channel, the valve core will cover and block the flow regulating port when moving, so as to realize the closing, opening and flow path adjustment of the passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a three-dimensional structural diagram of a three-way proportional reversing valve for automobile refrigerant according to the utility model;

[0020] Figure 2 This is an exploded schematic diagram of a three-way proportional reversing valve for automobile refrigerant according to the utility model;

[0021] Figure 3 This is a front view of a three-way proportional reversing valve for automobile refrigerant according to the utility model;

[0022] Figure 4 For along Figure 3 Sectional view along line AA;

[0023] Figure 5 This is the internal structure diagram of the valve body in the utility model;

[0024] Figure 6 It is a three-dimensional structural diagram of the valve core and the drive assembly in the utility model.

[0025] Figure identification: 10-valve body; 11-first valve port; 111-connecting part; 112-sealing part; 12-refrigerant channel; 13-flow regulating port; 14-second valve port; 15-buffer flow channel; 20-valve core; 21-sealing part; 22-rack; 30-motor; 31-gear. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figures 1 to 6 The utility model discloses a three-way proportional reversing valve for automobile refrigerant, including a reversing valve body, which includes a valve body 10, a single valve core 20 and a driving assembly; at least one first valve port 11 is provided on opposite sides of the valve body 10, and the two first valve ports 11 are connected to form a refrigerant channel 12, and flow regulating ports 13 are provided on the side walls at both ends of the refrigerant channel 12, and the two flow regulating ports 13 are connected to the second valve port 14 on the valve body 10, so that the second valve port 14 is respectively connected to the two first valve ports 11; the valve core 20 is arranged in the refrigerant channel 12 and coupled to the driving assembly, so that the valve core 20 can reciprocate in the refrigerant channel 12, when the valve core 20 is inserted into one of the first valve ports 11 to block it, the other first valve port 11 is connected to the second valve port 14 through the flow regulating port 13; when the valve core 20 is in the middle of the refrigerant channel 12, the two first valve ports 11 are connected to the second valve port 14. In this embodiment, the first valve port a and the first valve port b are symmetrically arranged on the upper and lower side walls of the valve body 10. The refrigerant channel 12 inside the valve body 10 is a straight cylindrical channel. The valve core 20 has the same diameter as the cylindrical channel, and a plurality of sealing rings are sleeved on the valve core 20 at intervals so that the refrigerant cannot pass through the gap between the valve core 20 and the side wall of the refrigerant channel 12. The first valve port a, the first valve port b, and the second valve port 14 connected to the refrigerant channel 12 are respectively connected to three different pipelines. Due to the blocking effect of the valve core 20, two passages for the refrigerant to flow are formed inside the valve body 10 at this time, namely, the second valve port 14-flow regulating port 13-first valve port a, and the second valve port 14-flow regulating port 13-first valve port b.

[0030] It can be understood that when the valve core 20 is located at the upper end of the refrigerant channel 12, the flow regulating port 13 between the first valve port a and the second valve port 14 is blocked, and the flow regulating port 13 between the second valve port 14 and the first valve port b is fully opened, and the refrigerant flows through the passage between the second valve port 14 and the first valve port b; when the valve core 20 is located at the lower end of the refrigerant channel 12, the passage situation is opposite. By adjusting the position of the valve core 20, the flow regulation of the three-way valve is realized, and the passage change can be realized by driving the valve core 20 to move, without continuously applying current to the driving component, and the flow ratio passage state of the two outlets required for work can be maintained without voltage and current zero power consumption. In addition, since the two ends of the valve core 20 are extended and arranged in the projection direction of the flow regulating port 13, when the valve core 20 does not completely block the flow regulating port 13, by adjusting the position of the valve core 20, the caliber of the flow regulating port 13 can be changed, thereby changing the flow ratio of the two passages.

[0031] like Figure 4 and Figure 6 In this embodiment, the driving assembly includes a motor 30 and a gear 31. The gear 31 is sleeved on the output shaft of the motor 30. A rack 22 is axially arranged on the outer side of the valve core 20. The valve core 20 is meshed with the gear 31 through the rack 22. When the motor 30 is started, the gear 31 drives the valve core 20 to move axially in the refrigerant channel 12. When the gear 31 rotates, it pushes the rack 22 and the valve core 20 to move in a straight line in the refrigerant channel 12 and stops when reaching a predetermined position. The motor 30 can be a stepper motor 30 or a servo motor 30.

[0032] Specifically, Figure 4 As shown, the length of the valve core 20 is greater than the distance between the flow regulating ports 13. When the valve core 20 is located in the middle of the refrigerant channel 12, the valve core 20 can change the diameters of the two flow regulating ports 13, thereby changing the flow rates of the two passages.

[0033] like Figure 5 As shown, in one embodiment, a buffer channel 15 is further provided in the valve body 10, and the buffer channel 15 is arranged parallel to the refrigerant channel 12. The buffer channel 15 is connected to the refrigerant channel 12 through the flow regulating port 13, and the buffer channel 15 is connected to the second interface. The flow regulating port 13 is arranged at both ends of the buffer channel 15 and is arranged perpendicular to the buffer channel 15. The second valve port 14 is connected to the middle of the buffer channel 15, so that the refrigerant will not block each other when flowing to the first valve port a and the first valve port b respectively, and the passage is smoother.

[0034] In one embodiment, the first valve port 11 includes a connecting portion 111 and a sealing portion 112 connected to each other. The diameter of the connecting portion 111 is the same everywhere, and the sealing portion 112 is funnel-shaped and its diameter gradually increases toward the side close to the valve core 20. Similarly, the valve core 20 includes a cylindrical valve core 20 body and blocking portions 21 at both ends. The diameter of the blocking portion 21 gradually decreases toward both ends. The shape of the blocking portion 21 matches the shape of the sealing portion 112. When the valve core 20 moves to the end of the refrigerant channel 12, it can completely block the first valve port 11, so that the two passages remain completely closed, further improving the sealing performance of the three-way valve.

[0035] In one embodiment, the valve body 10 includes an upper cover, a channel bin and a lower cover, the upper cover and the lower cover are respectively provided with a first valve port 11, the refrigerant channel 12 is provided in the channel bin, and the upper cover and the lower cover are respectively connected to the upper and lower sides of the channel bin by screws. The symmetrically arranged upper cover and lower cover can improve the production efficiency of the three-way valve, facilitate the production and assembly of the product, and improve the economy of the three-way valve.

[0036] like Figure 5 As shown, in this embodiment, the first valve port 11 is symmetrically arranged on both sides of the valve body 10. The refrigerant liquid channel is linear. In another optional embodiment, the first valve port 11 can be mirrored, so that the refrigerant channel 12 is N-shaped, the flow regulating port 13 is arranged in the middle of the refrigerant channel 12, and the valve core 20 is also arranged in the middle of the refrigerant channel 12 and extends in the projection direction of the flow regulating port 13, so as to realize the flow ratio control of the three-way valve without voltage maintenance.

[0037] The utility model drives the valve core to reciprocate axially in the refrigerant channel through a single driving component, thereby realizing the flow direction control of the refrigerant. Since the flow regulating port is set on the side of the refrigerant channel, the valve core will cover and block the flow regulating port when it moves to realize the closing, opening and flow path adjustment of the channel. Since the flow conditions of the two channels are adjusted according to the position of the valve core, the flow ratio channel state of the two outlets required for work can be maintained without voltage and current zero power consumption, which can improve the economy, safety and reliability of the refrigerant valve and more conveniently switch the refrigerant channel.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-way proportional reversing valve for automotive refrigerant, characterized in that The reversing valve comprises a reversing valve body, wherein the reversing valve body comprises a valve body (10), a single valve core (20) and a driving assembly; at least one first valve port (11) is provided on opposite sides of the valve body (10); the two first valve ports (11) are connected to form a refrigerant channel (12); flow regulating ports (13) are respectively provided on the side walls of the refrigerant channel (12) close to the first valve port (11); the valve core (20) is extended in the projection direction of the flow regulating port (13); the two flow regulating ports (13) are connected to the second valve port (14) on the valve body (10), so that the second valve port (14) is respectively connected to the two first valve ports (11); The valve core (20) is arranged in the refrigerant channel (12) and is coupled to the driving assembly so that the valve core (20) can reciprocate in the refrigerant channel (12). When the valve core (20) is inserted into one of the first valve ports (11) to block it, the other first valve port (11) is connected to the second valve port (14) through the flow regulating port (13); when the valve core (20) is in the middle of the refrigerant channel (12), both of the first valve ports (11) are connected to the second valve port (14).

2. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The length of the valve core (20) is greater than the distance between the flow regulating ports (13).

3. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: A buffer flow channel (15) is also provided in the valve body (10), and the buffer flow channel (15) is arranged parallel to the refrigerant channel (12). The buffer flow channel (15) is connected to the refrigerant channel (12) through the flow regulating port (13), and the buffer flow channel (15) is connected to the second valve port.

4. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The first valve ports (11) are symmetrically arranged on both sides of the valve body (10).

5. The automotive refrigerant three-way proportional reversing valve according to claim 3, characterized in that: The second valve port (14) is communicated with the middle portion of the buffer flow channel (15).

6. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The first valve port (11) comprises a connecting portion (111) and a sealing portion (112) which are connected to each other. The connecting portion (111) has the same diameter everywhere, and the sealing portion (112) is funnel-shaped and its diameter gradually increases toward a side close to the valve core (20).

7. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The driving assembly includes a motor (30) and a gear (31), wherein the gear (31) is sleeved on the output shaft of the motor (30), and a rack (22) is axially arranged on the outer side of the valve core (20), and the valve core (20) is meshed with the gear (31) through the rack (22). When the motor (30) is started, the gear (31) drives the valve core (20) to move axially in the refrigerant channel (12).

8. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The valve core (20) comprises a cylindrical valve core body and blocking portions (21) at both ends, and the diameter of the blocking portion (21) gradually decreases toward the two ends.

9. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: The valve body (10) comprises an upper cover, a channel bin and a lower cover, the upper cover and the lower cover are respectively provided with the first valve port (11), the refrigerant channel (12) is provided in the channel bin, and the upper cover and the lower cover are respectively connected to the upper and lower sides of the channel bin by screws.

10. The automotive refrigerant three-way proportional reversing valve according to claim 1, characterized in that: A sealing ring is provided on the spacer sleeve of the valve core (20).

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