Miniaturized electronic expansion valve

Abstract

The utility model belongs to the technical field of electronic expansion valves, and discloses a miniaturized electronic expansion valve which comprises an EXV electric control assembly, a fixing frame for fixing an EXV valve body is arranged on the lower end face of the EXV electric control assembly, a fixing bolt for fixing the EXV valve body is arranged on the inner wall of the lower end of the fixing frame, EXV electric control threads are formed in the inner wall of the upper end of the EXV valve body, and the EXV electric control threads are arranged on the inner wall of the lower end of the fixing frame. An EXV low-pressure outlet is formed in the inner wall of the front end of the EXV valve body, an EXV high-pressure inlet is formed in the inner wall of the right end of the EXV valve body, an EXV valve body fixing hole is formed in the left portion of the EXV low-pressure outlet, and an electric control fixing threaded hole is formed in the inner wall of the left end of the EXV valve body. According to the utility model, the weight is reduced, the EVA assembly does not need to be fixed by two screws and is fixed by one screw, so that the volume of the EXV valve body is greatly reduced, and meanwhile, the wall thickness of the open hole and the wall thickness of the avoided size constraint open hole position are both 2.5 mm, and the structure of the EXV valve body is minimized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electronic expansion valve, specifically is miniaturized electronic expansion valve. BACKGROUND

[0002] As a key component in refrigeration and air conditioning systems, electronic expansion valves (EXVs) play a crucial role in regulating refrigerant flow and ensuring the effective operation of the system under different working conditions. With the development of technology, miniaturized, intelligent, and high-efficiency EXVs have gradually become the mainstream trend in the industry.

[0003] Although there are some patents and technologies for miniaturized EXVs currently available, they still have some limitations in terms of structural design and control technology. For example, some miniaturized EXVs have overly complex structures, leading to increased manufacturing costs, while others do not fully consider the miniaturization of EXVs in most designs, resulting in large component sizes and heavy weights, which cannot meet the requirements of lightweight and improved vehicle endurance. SUMMARY

[0004] To solve the problems raised in the background technology, the utility model provides a miniaturized electronic expansion valve, which has the advantages of slimming and small size.

[0005] To achieve the above-mentioned purposes, the utility model provides the following technical scheme: a miniaturized electronic expansion valve, comprising an EXV electric control assembly, a fixed rack for fixing an EXV valve body is arranged on the lower end face of the EXV electric control assembly, a fixed bolt for fixing the EXV valve body is arranged on the inner wall of the lower end of the fixed rack, an EXV electric control thread is formed on the inner wall of the upper end of the EXV valve body, an EXV low-pressure outlet is formed on the front inner wall of the EXV valve body, an EXV high-pressure inlet is formed on the right end inner wall of the EXV valve body, an EXV valve body fixing hole is formed on the left side of the EXV low-pressure outlet, and an electric control fixed thread hole is formed on the left end inner wall of the EXV valve body.

[0006] Preferably, the EXV electric control assembly comprises an EVA electric control shell and an EVA electric control fixed plate, the lower end face of the EVA electric control shell is fixedly connected with the EVA electric control fixed plate, the upper end face of the EVA electric control fixed plate is fixedly connected with a power circuit, a stepper motor shell is installed in the EVA electric control shell, and the stepper motor shell is provided with two groups.

[0007] Preferably, two groups of stepper motor shells are installed with stepper motors inside, a driving circuit is arranged on the right end outer wall of the stepper motor, a communication circuit is electrically connected to the driving circuit, a controller is electrically connected to the communication circuit, the controller is electrically connected to the power circuit, and a threaded head is arranged on the upper end of the stepper motor.

[0008] Preferably, the controller and the driving circuit are connected by a communication circuit, and the inner wall of the controller is provided with a plurality of groups of connecting lines for electrically connecting the controller and the power supply circuit.

[0009] Preferably, the inner wall of the power supply circuit is provided with a hole, the bottom end of the stepping motor passes through the hole, the upper end of the EVA electric control fixed plate is provided with a fixing bolt, and the EVA electric control fixed plate is fixedly connected with the power supply circuit through the fixing bolt.

[0010] Preferably, the fixing bolt is threadedly connected with the inner wall of the electric control fixed threaded hole through the fixing frame, the opening radius of the EXV valve body fixed hole is 5.75, and the inner hole diameter of the EXV valve body fixed hole is 3.25.

[0011] Preferably, the opening radius of the EXV low-pressure outlet is 8.4, the inner hole diameter of the EXV low-pressure outlet is 5.9, and the distance between the EXV high-pressure inlet, the EXV electric control thread, the EXV valve body fixed hole, the electric control fixed threaded hole and the EXV low-pressure outlet along the periphery of the EXV valve body is 2.5 mm.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses a fixing bolt for connecting the EXV valve body alone, and because the EXV valve body is miniaturized, the weight is reduced, the EVA assembly no longer needs two screws for fixing, and is changed into a screw for fixing, thereby greatly reducing the volume of the EXV valve body, and the wall thickness of the opening position is 2.5 mm, and the EXV valve body structure is minimized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the EXV valve body cut structure schematic diagram of the utility model;

[0016] Figure 3 It is the EVA electric control shell structure schematic diagram of the utility model;

[0017] Figure 4 It is the EVA electric control shell internal structure schematic diagram of the utility model;

[0018] Figure 5 It is the stepping motor shell internal structure schematic diagram of the utility model.

[0019] In the diagram: 1. EXV electronic control assembly; 2. Mounting bracket; 3. Mounting bolt; 4. EXV valve body; 5. EXV high-pressure inlet; 6. EXV electronic control thread; 7. EXV valve body mounting hole; 8. Electronic control mounting threaded hole; 9. EXV low-pressure outlet; 101. EVA electronic control housing; 102. EVA electronic control mounting plate; 103. Power circuit; 104. Stepper motor housing; 105. Threaded head; 106. Stepper motor; 107. Drive circuit; 108. Communication circuit; 109. Controller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 2 As shown, this utility model provides a miniaturized electronic expansion valve, including an EXV electronic control assembly 1. The lower end face of the EXV electronic control assembly 1 is provided with a fixing bracket 2 for fixing an EXV valve body 4. The lower inner wall of the fixing bracket 2 is provided with fixing bolts 3 for fixing the EXV valve body 4. The upper inner wall of the EXV valve body 4 is provided with an EXV electronic control thread 6. The front inner wall of the EXV valve body 4 is provided with an EXV low-pressure outlet 9. The right inner wall of the EXV valve body 4 is provided with an EXV high-pressure inlet 5. An EXV valve body fixing hole 7 is provided to the left of the EXV low-pressure outlet 9. An electrically controlled fixing threaded hole 8 is provided on the inner wall of the left end. The opening radius of the EXV low-pressure outlet 9 is 8.4, and the inner diameter of the EXV low-pressure outlet 9 is 5.9. The distances between the EXV high-pressure inlet 5, the EXV electrically controlled thread 6, the EXV valve body fixing hole 7, the electrically controlled fixing threaded hole 8, and the EXV low-pressure outlet 9 along the periphery of the EXV valve body 4 are all 2.5mm. The fixing bolt 3 passes through the fixing bracket 2 and is threaded to the inner wall of the electrically controlled fixing threaded hole 8. The opening radius of the EXV valve body fixing hole 7 is 5.75, and the inner diameter of the EXV valve body fixing hole 7 is 3.25.

[0022] The above scheme is adopted: After the EXV electronic control component 1 is started, it enters the interior of the EXV valve body 4 through the EXV high pressure inlet 5, and then the incoming reheated high pressure liquid refrigerant is throttled and collided through the EXV low pressure outlet 9 to become other low temperature and low pressure refrigerants. Through heat exchange between the refrigerant and the battery, the power battery is cooled down. The EXV valve body 4 and the EXV electronic control component 1 can be fixedly connected by the fixing bracket 2 and the fixing bolts 3.

[0023] like Figure 3As shown, this utility model provides a miniaturized electronic expansion valve. The EXV electronic control assembly 1 includes an EVA electronic control housing 101 and an EVA electronic control fixing plate 102. The lower end face of the EVA electronic control housing 101 is fixedly connected to the EVA electronic control fixing plate 102, and the upper end face of the EVA electronic control fixing plate 102 is fixedly connected to a power circuit 103. A stepper motor housing 104 is installed inside the EVA electronic control housing 101. Two sets of stepper motor housings 104 are provided. The inner wall of the power circuit 103 has a hole, and the bottom end of the stepper motor 106 passes through the hole. The upper end of the EVA electronic control fixing plate 102 is provided with a fixing bolt, and the EVA electronic control fixing plate 102 is fixedly connected to the power circuit 103 by the fixing bolt.

[0024] The above solution is adopted: the stepper motor 106 inside the EVA electronic control housing 101 is protected by a fixed connection between the EVA electronic control housing 101 and the EVA electronic control fixing plate 102, thereby protecting the stepper motor 106 and the internal connection circuit.

[0025] like Figure 4 As shown, this utility model provides a miniaturized electronic expansion valve. Stepper motors 106 are installed inside the housings 104 of two sets of stepper motors. A drive circuit 107 is provided on the outer wall of the right end of the stepper motor 106. The drive circuit 107 is electrically connected to a communication circuit 108. The communication circuit 108 is electrically connected to a controller 109. The controller 109 is electrically connected to a power supply circuit 103. A threaded head 105 is provided on the upper end of the stepper motor 106. The controller 109 and the drive circuit 107 transmit information through the communication circuit 108. Several sets of connecting wires are provided on the inner wall of the controller 109. The connecting wires are used to electrically connect the controller 109 and the power supply circuit 103.

[0026] The above scheme involves: collecting system state parameters through sensors, then converting the collected physical quantities into electrical signals and transmitting them to the controller 109. The controller 109 receives the electrical signals from the sensors, processes and analyzes them, and then the sensors determine the system state and make control decisions. The controller 109 uses actuators to convert the control decisions into specific control actions, which are then transmitted to the stepper motor 106 or solenoid valves, heaters, etc., through the communication circuit 108 and the drive circuit 107 to adjust the system's operating parameters.

[0027] The utility model discloses a working principle and use flow: EXV electric control assembly 1 starts, through EXV high pressure import 5 into the inside of EXV valve body 4, subsequently through EXV low pressure export 9 will enter the liquid coolant of rewarming high pressure throttling collision change low temperature low pressure other coolant, through the heat exchange of coolant and battery, realize the cooling of power battery, through the fixed frame 2 and fixed bolt 3 can be fixedly connected between EXV valve body 4 and EXV electric control assembly 1, through the fixed connection between EVA electric control shell 101 and EVA electric control fixed plate 102, the protection of the stepper motor 106 in EVA electric control shell 101, thereby the protection of stepper motor 106 and internal connecting circuit, through sensor acquisition system state parameter, subsequently sensor converts the physical quantity of collection into electric signal to transmission to controller 109, and controller 109 accepts the electric signal from sensor, and handles and analyzes, subsequently sensor judges system state to make control decision, and controller 109 uses actuator to convert control decision into specific control action and through communication circuit 108 and drive circuit 107 delivery stepper motor 106 or solenoid valve, heater etc.

[0028] It is to be understood that the terminology used herein such as first and second, and the like, is merely intended to differentiate one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made hereto without departing from the spirit and scope of the application in its broadest form. The scope of the present application is limited only by the claims and the equivalents thereof.

Claims

1. Miniaturized electronic expansion valve comprising an EXV electronic control assembly (1), characterized in that: The lower end face of the EXV electric control assembly (1) is provided with a fixed frame (2) for fixing the EXV valve body (4), the lower end inner wall of the fixed frame (2) is provided with a fixing bolt (3) for fixing the EXV valve body (4), the upper end inner wall of the EXV valve body (4) is provided with an EXV electric control thread (6), the front end inner wall of the EXV valve body (4) is provided with an EXV low pressure outlet (9), the right end inner wall of the EXV valve body (4) is provided with an EXV high pressure inlet (5), the left side of the EXV low pressure outlet (9) is provided with an EXV valve body fixing hole (7), and the left end inner wall of the EXV valve body (4) is provided with an electric control fixed thread hole (8).

2. The compact electronic expansion valve according to claim 1, characterized in that: The EXV electric control assembly (1) comprises an EVA electric control shell (101) and an EVA electric control fixed plate (102), the lower end face of the EVA electric control shell (101) is fixedly connected with the EVA electric control fixed plate (102), the upper end face of the EVA electric control fixed plate (102) is fixedly connected with a power circuit (103), the inside of the EVA electric control shell (101) is provided with a step motor shell (104), and the step motor shell (104) is provided with two groups.

3. The compact electronic expansion valve according to claim 2, characterized in that: The inside of the two groups of step motor shells (104) is provided with a step motor (106), the right end outer wall of the step motor (106) is provided with a driving circuit (107), the driving circuit (107) is electrically connected with a communication circuit (108), the communication circuit (108) is electrically connected with a controller (109), the controller (109) is electrically connected with the power circuit (103), and the upper end of the step motor (106) is provided with a threaded head (105).

4. The compact electronic expansion valve according to claim 3, characterized in that: The controller (109) and the driving circuit (107) use the communication circuit (108) to transmit information, the inner wall of the controller (109) is provided with a plurality of groups of connecting lines, and the connecting lines are used for electrically connecting the controller (109) and the power circuit (103).

5. The compact electronic expansion valve according to claim 2, characterized in that: The inner wall of the power circuit (103) is provided with a hole, the bottom end of the step motor (106) penetrates through the hole, the upper end of the EVA electric control fixed plate (102) is provided with a fixing bolt, and the EVA electric control fixed plate (102) is fixedly connected with the power circuit (103) through the fixing bolt.

6. The compact electronic expansion valve according to claim 1, characterized in that: The fixing bolt (3) penetrates through the fixed frame (2) and is threadedly connected to the inner wall of the electric control fixed thread hole (8), the opening radius of the EXV valve body fixing hole (7) is 5.75, and the inner hole diameter of the EXV valve body fixing hole (7) is 3.

25.

7. The compact electronic expansion valve according to claim 1, characterized in that: The opening radius of the EXV low pressure outlet (9) is 8.4, the inner hole diameter of the EXV low pressure outlet (9) is 5.9, and the distance between the EXV high pressure inlet (5), the EXV electric control thread (6), the EXV valve body fixing hole (7), the electric control fixed thread hole (8), the EXV low pressure outlet (9) and the periphery of the EXV valve body (4) is 2.5 mm.

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