Energy-saving electronic expansion valve for new energy automobile air conditioning system

Abstract

The utility model discloses an energy -conserving electronic expansion valve for new energy automobile air conditioning system, including the valve body, the valve body one side fixed setting has the liquid inlet, the valve body lower extreme fixed setting has the liquid outlet, the valve body inside is provided with the control mechanism of control refrigerant flow, the control mechanism includes first fixed plate, second fixed plate, movable rod, valve core, sealing washer, screw rod. The valve core moving range control of utility model discloses is extremely accurate, can accurately adjust the flow of refrigerant according to actual demand, while ensuring the energy -saving effect, shows the outstanding adjustment performance. In addition, the device adopts the modular design concept, has the high maintainability and the replaceability. When needing, the user can easily replace the valve body or stepper motor control structure, need not because single component damage and overall replacement equipment. This design not only reduces the use and maintenance cost greatly, also promotes the flexibility and durability of equipment, makes the device more easily popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of electronic expansion valve technology, specifically an energy-saving electronic expansion valve for air conditioning systems in new energy vehicles. Background Technology

[0002] An electronic expansion valve is an automated valve that controls refrigerant flow through electronic signals. It is widely used in refrigeration equipment such as air conditioners, heat pumps, refrigerators, and thermal management systems for new energy vehicles. Its core function is to achieve efficient system operation and energy efficiency optimization by precisely regulating the refrigerant flow.

[0003] In the field of new energy vehicles, the use of energy-saving electronic expansion valves is the mainstream direction of current technological development. Its core advantages lie in precise flow control, high efficiency and energy saving, and strong adaptability to complex working conditions.

[0004] Currently, electronic expansion valves generally come in two forms: coil-driven (electromagnetic) electronic expansion valves and coil-driven (electromagnetic) electronic expansion valves. Coil-driven electronic expansion valves are less expensive and can be easily replaced when the coil is damaged. However, electromagnetic expansion valves require a continuous supply of control voltage to maintain the valve needle opening, which increases energy consumption and results in relatively low control accuracy, making it difficult to achieve precise flow control. While stepper motor control provides more precise control and reduces valve opening fluctuations, it is difficult to replace when the stepper motor is damaged, leading to higher overall equipment costs. Therefore, there is a lack of energy-saving electronic expansion valves that combine the advantages of both electromagnetic and stepper motor types in the current technology. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving electronic expansion valve for air conditioning systems in new energy vehicles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving electronic expansion valve for a new energy vehicle air conditioning system, comprising a valve body, an inlet fixedly disposed on one side of the valve body, an outlet fixedly disposed at the lower end of the valve body, and a control mechanism for controlling refrigerant flow inside the valve body. The control mechanism includes a first fixed plate, a second fixed plate, a movable rod, a valve core, a sealing ring, and a screw. The first fixed plate is fixedly disposed on one side of the upper end of the valve body, and the second fixed plate is fixedly disposed on one side of the upper end of the first fixed plate inside the valve body. The movable rod is movably inserted inside the first fixed plate, and the valve core is fixedly disposed at the lower end of the movable rod. A sealing ring is fixedly disposed in the middle of the inner side of the valve body, and the valve core is movably engaged in the middle of the sealing ring. A screw is movably engaged inside the second fixed plate via a thread, and a drive mechanism for driving the screw to rotate is disposed at the upper end of the valve body.

[0007] Preferably, the drive mechanism includes a motor housing, a stepper motor, a transmission sleeve, and a transmission head. The upper end of the valve body is provided with a motor housing, and a stepper motor is fixedly installed inside the motor housing. A transmission sleeve is fixedly installed at the power output shaft end of the stepper motor. A transmission head is fixedly installed at the upper end of the screw. The transmission sleeve is sleeved on the outer surface of the transmission head so that the rotation of the transmission sleeve can drive the transmission head to rotate together, and the transmission head can move up and down inside the transmission sleeve. The drive mechanism can drive the screw to rotate, thereby driving the screw and the valve core to move up and down.

[0008] Preferably, a fixing ring is fixedly provided on the outer surface of the movable rod, and a corrugated hose is fixedly provided between the fixing ring and the first fixing plate. Since the movable rod of this device needs to move up and down, there will be movement between the movable rod and the first fixing plate. It is inconvenient to seal the movement. Therefore, a corrugated hose is directly provided to ensure that the movable rod can move up and down while also ensuring the sealing of the connection between the first fixing plate and the movable rod.

[0009] Preferably, a locking screw is provided between the motor compartment and the valve body via threads, which allows the motor compartment and the valve body to be disassembled at any time when needed.

[0010] Preferably, the screw and the movable rod are movably connected by an annular groove, so that the screw can rotate relative to the movable rod but cannot be displaced. In this way, when the screw rotates and moves up and down under the action of the thread, it can drive the movable rod and the valve core to move up and down at the same time, thereby causing the valve core to produce different opening degrees.

[0011] Preferably, a connecting cable is fixedly provided on the upper end of the stepper motor, through which an external power supply and a corresponding controller can be connected to the stepper motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model allows the valve body and motor compartment to be disassembled as needed, enabling users to easily replace the valve body or stepper motor control structure without having to replace the entire device due to the failure of a single component. This design not only significantly reduces usage and maintenance costs but also enhances the flexibility and durability of the equipment, making this device easier to promote and apply.

[0014] 2. When this utility model is in use, there will be movement between the movable rod and the first fixed plate. Such movement and sealing are relatively inconvenient. Therefore, this device is equipped with a corrugated hose to ensure that the movable rod can move up and down while also ensuring the sealing of the connection between the first fixed plate and the movable rod. This can prevent refrigerant leakage when the device is disassembled from the valve body and the motor compartment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to the present invention;

[0016] Figure 2 This is a cross-sectional view of an energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to this utility model.

[0017] Figure 3 This is a disassembled view of the motor compartment in an energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to this utility model.

[0018] Figure 4 This utility model relates to an energy-saving electronic expansion valve for a new energy vehicle air conditioning system. Figure 3 The front view.

[0019] In the diagram: 1. Valve body; 2. Liquid inlet; 3. Liquid outlet; 4. First fixed plate; 5. Second fixed plate; 6. Movable rod; 7. Valve core; 8. Sealing ring; 9. Screw; 10. Motor compartment; 11. Stepper motor; 12. Transmission sleeve; 13. Transmission head; 14. Fixing ring; 15. Corrugated hose. 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] Please see Figure 1-4 This utility model provides a technical solution: an energy-saving electronic expansion valve for a new energy vehicle air conditioning system, including a valve body 1. An inlet 2 is fixedly disposed on one side of the valve body 1, and an outlet 3 is fixedly disposed at the lower end of the valve body 1. A control mechanism for controlling refrigerant flow is disposed inside the valve body 1. The control mechanism includes a first fixed plate 4, a second fixed plate 5, a movable rod 6, a valve core 7, a sealing ring 8, and a screw 9. The first fixed plate 4 is fixedly disposed on one side of the upper end of the valve body 1. The second fixed plate 5 is fixedly disposed on one side of the upper end of the first fixed plate 4 inside the valve body 1. The movable rod 6 is movably inserted inside the first fixed plate 4. The valve core 7 is fixedly disposed at the lower end of the movable rod 6. A sealing ring 8 is fixedly disposed in the middle of the inner side of the valve body 1. The valve core 7 is movably engaged in the middle of the sealing ring 8. The screw 9 is movably engaged inside the second fixed plate 5 via a thread. A drive mechanism for driving the screw 9 to rotate is disposed at the upper end of the valve body 1.

[0022] The drive mechanism includes a motor housing 10, a stepper motor 11, a transmission sleeve 12, and a transmission head 13. The upper end of the valve body 1 is provided with a motor housing 10, and the stepper motor 11 is fixedly installed inside the motor housing 10. The power output shaft end of the stepper motor 11 is fixedly provided with a transmission sleeve 12, and the upper end of the screw 9 is fixedly provided with a transmission head 13. The transmission sleeve 12 is sleeved on the outer surface of the transmission head 13 so that the rotation of the transmission sleeve 12 can drive the transmission head 13 to rotate together, and the transmission head 13 can move up and down inside the transmission sleeve 12. The drive mechanism can drive the screw 9 to rotate, thereby driving the screw 9 and the valve core 7 to move up and down.

[0023] A fixing ring 14 is fixedly provided on the outer surface of the movable rod 6. A corrugated hose 15 is fixedly provided between the fixing ring 14 and the first fixing plate 4. Since the movable rod 6 of this device needs to move up and down, there will be movement between the movable rod 6 and the first fixing plate 4. It is inconvenient to seal the movement. Therefore, a corrugated hose 15 is directly sleeved to ensure that the movable rod 6 can move up and down while also ensuring the sealing of the connection between the first fixing plate 4 and the movable rod 6.

[0024] The motor compartment 10 and the valve body 1 are fixed together by a locking screw, which allows the motor compartment 10 and the valve body 1 to be disassembled at any time when needed.

[0025] The screw 9 and the movable rod 6 are movably connected by an annular groove, so that the screw 9 can rotate relative to the movable rod 6, but cannot be displaced. In this way, when the screw 9 rotates and moves up and down under the action of the thread, it can drive the movable rod 6 and the valve core 7 to move up and down together, thereby driving the valve core 7 to produce different opening degrees.

[0026] A connecting cable is fixedly installed on the upper end of the stepper motor 11, through which the stepper motor 11 can be connected to an external power supply and a corresponding controller;

[0027] Working Principle: When using this device, the valve opening is controlled by the stepper motor 11 driving the transmission sleeve 12 to rotate. The transmission sleeve 12 is naturally fitted onto the outer surface of the transmission head 13. Thus, the rotation of the transmission sleeve 12 naturally drives the screw 9 to rotate, causing the screw 9, transmission head 13, and valve core 7 to move up and down, thereby changing the valve opening. This device features a modular design, allowing the valve body 1 and motor compartment 10 to be disassembled as needed. This allows users to easily replace the valve body 1 or the stepper motor 11 control structure without replacing the entire device due to the failure of a single component. This design not only significantly reduces usage and maintenance costs but also improves the flexibility and durability of the equipment, making this device easier to promote and apply.

[0028] Furthermore, during the use of this device, there will be movement between the movable rod 6 and the first fixed plate 4, which makes sealing difficult. Therefore, this device is fitted with a corrugated hose 15 to ensure that the movable rod 6 can move up and down while also ensuring the sealing of the connection between the first fixed plate 4 and the movable rod 6. This will prevent refrigerant leakage when the device is disassembled from the valve body 1 and the motor compartment 10.

[0029] It is important to note that after each replacement of the stepper motor 11, it should be calibrated. The stepper motor 11 drives the screw 9 to rotate, causing the valve core 7 to move down and fit tightly with the sealing ring 8, thus completely closing the valve core 7. This is recorded as the initial position. Subsequently, by rotating the stepper motor 11 a predetermined number of times, the screw 9 and valve core 7 can be moved up and down to the predetermined position.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving electronic expansion valve for a new energy vehicle air conditioning system, comprising a valve body (1), characterized in that: A liquid inlet (2) is fixedly provided on one side of the valve body (1), and a liquid outlet (3) is fixedly provided at the lower end of the valve body (1). A control mechanism for controlling the refrigerant flow is provided inside the valve body (1). The control mechanism includes a first fixed plate (4), a second fixed plate (5), a movable rod (6), a valve core (7), a sealing ring (8), and a screw (9). A first fixed plate (4) is fixedly provided on one side of the upper end of the valve body (1). A second fixed plate (5) is fixedly provided on one side of the upper end of the first fixed plate (4) inside the valve body (1). A movable rod (6) is movably inserted inside the first fixed plate (4). A valve core (7) is fixedly provided at the lower end of the movable rod (6). A sealing ring (8) is fixedly provided in the middle of the inner side of the valve body (1). The valve core (7) is movably engaged in the middle of the sealing ring (8). A screw (9) is movably engaged inside the second fixed plate (5) through a thread. A drive mechanism for driving the screw (9) to rotate is provided at the upper end of the valve body (1).

2. The energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to claim 1, characterized in that: The drive mechanism includes a motor housing (10), a stepper motor (11), a transmission sleeve (12), and a transmission head (13). The upper end of the valve body (1) is provided with a motor housing (10). The stepper motor (11) is fixedly installed inside the motor housing (10). The power output shaft end of the stepper motor (11) is fixedly provided with a transmission sleeve (12). The upper end of the screw (9) is fixedly provided with a transmission head (13). The transmission sleeve (12) is sleeved on the outer surface of the transmission head (13) so that the rotation of the transmission sleeve (12) can drive the transmission head (13) to rotate together, and the transmission head (13) can move up and down inside the transmission sleeve (12).

3. The energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to claim 1, characterized in that: A fixing ring (14) is fixedly provided on the outer surface of the movable rod (6), and a corrugated hose (15) is fixedly provided between the fixing ring (14) and the first fixing plate (4).

4. The energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to claim 2, characterized in that: The motor compartment (10) and the valve body (1) are fixed together by a locking screw.

5. The energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to claim 1, characterized in that: The screw (9) and the movable rod (6) are movably connected by an annular groove, so that the screw (9) can rotate relative to the movable rod (6), but cannot be displaced relative to it.

6. The energy-saving electronic expansion valve for a new energy vehicle air conditioning system according to claim 2, characterized in that: A connecting cable is fixedly installed on the upper end of the stepper motor (11).

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