Double-working-condition expansion valve controller

Abstract

The utility model provides a double-working-condition expansion valve controller, which relates to the technical field of expansion valve control equipment and comprises an expansion valve control main body, a side lifting groove is formed in the top of the expansion valve control main body, and a connecting rectangular piece is slidably connected to the inner wall of the side lifting groove. According to the double-working-condition expansion valve controller, the problem that once outer protection of a pressure button of the double-working-condition expansion valve controller is damaged, an internal button structure can be directly exposed in a complex engineering environment, dust, water or other corrosive substances can enter the controller through cracks, normal operation of the controller is affected, and the service life of the controller is prolonged is solved by installing the protective cover. A large number of dust particles generally exist in a factory environment, the tiny particles are easily brought into an expansion valve controller without a protective cover along with air flow, a large amount of dust and dirt can be accumulated in the controller, unnecessary connection is formed between circuits due to the dust with the conductive property, and the expansion valve controller cannot be damaged. Even oxidation reaction on the metal surface is promoted, so that the overall performance of the expansion valve controller is obviously reduced, and the service life of the expansion valve controller is shortened.

Description

Technical Field

[0001] This utility model relates to the field of expansion valve control equipment technology, and in particular to a dual-condition expansion valve controller. Background Technology

[0002] The dual-condition expansion valve controller is an advanced refrigeration system control device. It can automatically adjust the refrigerant flow and system operating parameters according to different operating conditions to optimize system performance and efficiency. In heat pump heating and cooling systems, the dual-condition expansion valve controller can switch between heating and cooling modes to meet the needs of different seasons. As a highly efficient refrigeration system control device, the dual-condition expansion valve controller has a wide range of applications and broad development prospects. It will play an increasingly important role in the future refrigeration industry.

[0003] In existing technologies, dual-condition expansion valve controllers often employ pressure buttons covered with plastic sheets. This design aims to provide a convenient operating experience and a certain level of protection. However, in actual use, these pressure buttons face multiple challenges. Frequent pressing for equipment control, coupled with prolonged exposure to various external environmental factors such as direct sunlight, temperature changes, and humidity fluctuations, accelerates the aging process of the plastic material, causing it to gradually lose its original elasticity and strength, eventually leading to cracking or breakage. Once the outer protective layer of the pressure button is damaged, the internal button structure is directly exposed to the complex engineering environment. This not only affects the aesthetics of the equipment but, more importantly, increases the risk of accidental damage to internal precision mechanical components and electrical connections. Risks of damage include the possibility that dust, moisture, or other corrosive substances can enter the controller through cracks, causing short circuits on the circuit boards or accumulating on mechanical parts and affecting their normal operation. In addition, there are often many dust particles in the factory environment. These tiny particles can easily be carried into the unprotected expansion valve controller by airflow. Over time, a large amount of dust and dirt will accumulate inside the controller, which will not only seriously affect the working efficiency of key components such as heat sinks—making it difficult to dissipate heat effectively and thus causing overheating problems; but also cause unnecessary connections between circuits (i.e., short circuits) due to the conductive nature of the dust, and even promote oxidation reactions on the metal surface (commonly known as rusting), resulting in a significant reduction in the overall performance of the expansion valve controller and a shortened service life. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-condition expansion valve controller.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dual-condition expansion valve controller, comprising an expansion valve control body, a side lifting groove on the top of the expansion valve control body, a connecting member slidably connected to the inner wall of the side lifting groove, a protective cover fixed to the top of the connecting member, a cylindrical member fixed to one side of the bottom of the connecting member, a double-folded rail member slidably connected to the inner wall of the expansion valve control body, an end circular sliding groove on the inner wall of the double-folded rail member, the inner wall of the end circular sliding groove slidably connected to the circumference of the cylindrical member, a triangular side plate fixed to one side of the double-folded rail member, an L-shaped seat plate fixed to one side of the top of the triangular side plate, a prompting plate fixed to one side of the L-shaped seat plate by a positioning screw, and a vertical sliding groove on the top of the expansion valve control body, the inner wall of the vertical sliding groove slidably connected to the surface of the positioning screw.

[0006] Preferably, the expansion valve control body has a side sliding groove at the top, and a trapezoidal sliding groove at the bottom of the inner wall of the side sliding groove. A side connecting rod is slidably connected to the inner wall of the side sliding groove, and a limiting ladder is fixed at the bottom of the side connecting rod. In the prior art, the protective cover has a certain weight. During long-term use, if wear occurs between the connecting rod and the inner wall of the expansion valve control body, the protective cover is prone to tilting outward. This tilting will cause difficulties when the operator tries to push the protective cover, because the protective cover can no longer slide smoothly along the predetermined track. This not only affects the convenience of the operator when maintaining or adjusting the equipment, but also causes the operation of the entire system to become unsmooth, and may even cause more serious mechanical failures. To address this problem, this utility model solves the problem by installing a limiting ladder. By cooperating with the trapezoidal sliding groove, the tilting tendency of the protective cover is limited, and the protective cover maintains its predetermined track movement, thereby improving the user experience.

[0007] Preferably, the bottom of the limiting ladder component has an arc groove, and a positioning spring is fixed to the inner wall of the trapezoidal groove. The surface of the positioning spring is nested with the inner wall of the arc groove. In the prior art, the protective cover is difficult to maintain stability when it moves to the highest or lowest point, especially when relying solely on friction. After long-term use, wear occurs between the components, reducing friction and making it difficult for the protective cover to maintain its position, thus reducing the service life of the equipment. To address this problem, this utility model solves the issue by installing a positioning spring. The protective cover is fixed by the combination of the positioning spring and the arc groove, so that the protective cover can maintain its predetermined position when it reaches the positioning spring. At the same time, the positioning spring provides feedback to the operator, thereby improving the service life of the equipment and enhancing the user experience.

[0008] Preferably, a back edge triangular piece is fixed to one side of the triangular side plate, and the bottom of the back edge triangular piece is fixed to the top of the double-folded rail piece, thereby improving the fixing effect of the component through the back edge triangular piece and thus improving the service life of the equipment.

[0009] Preferably, a limiting disc is fixed to one end of the cylindrical component, which prevents the cylindrical component from leaving and improves the stability of the equipment.

[0010] Preferably, indicator lights are fixed on both sides of the top of the indicator board, which enables staff to quickly locate the device in low light or at night, thereby improving the user experience.

[0011] Preferably, buffer pads are fixed at both ends of the limiting ladder component, which reduces collision wear between components and improves the service life of the equipment.

[0012] Beneficial effects:

[0013] 1. In existing technologies, dual-condition expansion valve controllers often employ pressure buttons covered with plastic sheets. This design aims to provide a convenient operating experience and a certain level of protection. However, in actual use, these pressure buttons face multiple challenges. Frequent pressing for equipment control, coupled with prolonged exposure to various external environmental factors such as direct sunlight, temperature changes, and humidity fluctuations, accelerates the aging process of the plastic material, causing it to gradually lose its original elasticity and strength, eventually leading to cracking or breakage. Once the outer protective layer of the pressure button is damaged, the internal button structure is directly exposed to the complex engineering environment. This not only affects the aesthetics of the equipment but, more importantly, increases the risk of accidental damage to internal precision mechanical components and electrical connections. For example, dust, moisture, or other corrosive substances can enter the controller through cracks, causing short circuits on the circuit board or accumulating on mechanical parts, affecting their normal operation. Furthermore, factory environments commonly contain a large amount of dust particles. These tiny particles are easily carried into the unprotected expansion valve controller by airflow. Over time, a large amount of dust and dirt will accumulate in the controller... Dust buildup inside the controller not only severely affects the performance of key components such as heat sinks—making it difficult to dissipate heat effectively and leading to overheating—but also causes unnecessary connections between circuits due to its conductive properties, and even promotes oxidation reactions on metal surfaces, significantly reducing the overall performance of the expansion valve controller and shortening its lifespan. To address these issues, this invention uses a protective cover. When the operator needs to control the expansion valve controller, they can simply hold the cover groove and slide the cover upwards, causing the connecting member on the bottom side of the cover to... As it moves upward, the cylindrical part of the connecting rod slides in the end groove of the double-folded rail. Since the moving trajectory of the connecting rod is always perpendicular to the ground, when the cylindrical part moves to the corner of the double-folded rail, the other double-folded rail moves towards the side closer to the protective cover, lifting the indicator plate away from the inner wall of the expansion valve control body to alert the operator. At the same time, when the operator leaves and slides the protective cover downward, the indicator plate resets. While the protective cover protects the expansion valve control body button from direct sunlight or factory environment exposure, the indicator plate also helps the operator maintain the good habit of closing the cover at any time, thus improving the service life of the equipment.

[0014] 2. In the prior art, the protective cover, due to its own weight, is prone to tilting outwards during long-term use if wear occurs between the connecting member and the inner wall of the expansion valve control body. This tilting makes it difficult for operators to push the protective cover, as it can no longer slide smoothly along the predetermined track. This not only affects the convenience of maintenance or adjustment of the equipment by the operator, but also causes the entire system to operate sluggishly, and may even lead to more serious mechanical failures. To address this problem, this utility model uses the installation of a limiting ladder to restrict the tilting tendency of the protective cover by matching the limiting ladder with the trapezoidal slide, thus keeping the protective cover moving along the predetermined track and improving the user experience.

[0015] 3. In existing technologies, the protective cover is difficult to maintain stability when it moves to its highest or lowest point, especially when relying solely on friction. After prolonged use, wear between components reduces friction, making it difficult for the protective cover to maintain its position and thus reducing the equipment's lifespan. To address this problem, this utility model uses a positioning spring plate. By cooperating with the positioning spring plate and the arc groove, the protective cover is nested and fixed, allowing it to maintain its predetermined position when it reaches the positioning spring plate. At the same time, the positioning spring plate provides feedback to the operator, thereby improving the equipment's lifespan and enhancing the user experience. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the double-folded rail component of this utility model;

[0018] Figure 3 This is a cross-sectional view of the information board of this utility model;

[0019] Figure 4 This is a cross-sectional view of the positioning screw of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the indicator light of this utility model;

[0021] Figure 6 This is a cross-sectional view of the side connecting rod of this utility model;

[0022] Figure 7 This is a cross-sectional view of the positioning spring sheet of this utility model.

[0023] Legend:

[0024] 1. Expansion valve control body; 2. Side lifting groove; 201. Connecting rod; 202. Double folded rail; 203. Triangular side plate; 204. L-shaped seat plate; 205. Positioning screw; 206. Indicator plate; 207. Protective cover; 208. End round sliding groove; 209. Vertical sliding groove; 2010. Cover groove; 3. Side sliding groove; 301. Trapezoidal sliding groove; 302. Side connecting rod; 303. Restricting ladder component; 4. Back edge triangular component; 5. Restricting disc component; 6. Indicator light; 7. Buffer pad; 8. Positioning spring plate. Detailed Implementation

[0025] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:

[0028] Reference Figure 1-7The dual-condition expansion valve controller includes an expansion valve control body 1. A side lifting groove 2 is provided on the top of the expansion valve control body 1. A connecting member 201 is slidably connected to the inner wall of the side lifting groove 2. A protective cover 207 is fixed to the top of the connecting member 201. A cylindrical member is fixed to one side of the bottom of the connecting member 201. A double-folded rail member 202 is slidably connected to the inner wall of the expansion valve control body 1. An end circular groove 208 is provided on the inner wall of the double-folded rail member 202. The inner wall of the end circular groove 208 is slidably connected to the circumference of the cylindrical member. A triangular side plate 203 is fixed to one side of the double-folded rail member 202. An L-shaped seat plate 204 is fixed to one side of the top of the triangular side plate 203. A prompting plate 206 is fixed to one side of the L-shaped seat plate 204 by a positioning screw 205. A vertical sliding groove 209 is provided on the top of the expansion valve control body 1. The inner wall of the vertical sliding groove 209 is slidably connected to the surface of the positioning screw 205. The expansion valve control body 1 has a side sliding groove 3 on its top, and a trapezoidal sliding groove 301 on the bottom of the inner wall of the side sliding groove 3. A side connecting rod 302 is slidably connected to the inner wall of the side sliding groove 3, and a limiting ladder member 303 is fixed at the bottom of the side connecting rod 302. Because the protective cover 207 has a certain weight, if wear occurs between the connecting rod member 201 and the inner wall of the expansion valve control body 1 during long-term use, the protective cover 207 is prone to tilting outward. This tilting will make it difficult for operators to push the protective cover 207, because the protective cover 207 can no longer slide smoothly along the predetermined track. This not only affects the convenience of operators when maintaining or adjusting the equipment, but also makes the operation of the entire system less smooth, and may even cause more serious mechanical failures. The problem is solved by installing the limiting ladder member 303. By cooperating with the trapezoidal sliding groove 301, the tilting tendency of the protective cover 207 is limited, and the protective cover 207 maintains its predetermined track movement, thereby improving the user experience.

[0029] The bottom of the limiting ladder component 303 has an arc groove, and a positioning spring plate 8 is fixed to the inner wall of the trapezoidal slide 301. The surface of the positioning spring plate 8 is nested with the inner wall of the arc groove. When the protective cover 207 moves to the highest or lowest point, it is difficult to maintain stability, especially when relying solely on friction. After long-term use, wear between components reduces friction, making it difficult for the protective cover 207 to maintain its position, thus reducing the service life of the equipment. The installation of the positioning spring plate 8 solves this problem. By cooperating with the arc groove, the positioning spring plate 8 and the protective cover 207 are nested and fixed, allowing the protective cover 207 to maintain its predetermined position when it reaches the positioning spring plate 8. At the same time, the positioning spring plate 8 provides feedback to the operator, thereby improving the service life of the equipment and enhancing the user experience. A back edge triangular component 4 is fixed to one side of the triangular side plate 203. The bottom of the back edge triangular component 4 is fixed to the top of the double folded rail component 202, thereby improving the fixing effect of the components and extending the service life of the equipment. A limiting disc 5 is fixed to one end of the cylindrical component, preventing it from leaving the double-folded rail component 202 and thus improving equipment stability. Indicator lights 6 are fixed to both sides of the top of the indicator panel 206, enabling workers to quickly locate the equipment in low-light or nighttime conditions, improving user experience. Buffer pads 7 are fixed to both ends of the limiting ladder component 303, reducing collision wear between components and extending the equipment's lifespan.

[0030] The working principle of this utility model is as follows: When the operator needs to control the expansion valve controller, he / she holds the cover groove 2010 of the protective cover 207 and slides the protective cover 207 upward, causing the connecting member 201 on one side of the bottom of the protective cover 207 to move accordingly. The cylindrical part of the connecting member 201 slides in the end circular groove 208 of the double folding rail 202. Since the movement trajectory of the connecting member 201 is always perpendicular to the ground, when the cylindrical part moves to the folding corner of the double folding rail 202, the double folding rail 202 moves towards the side closer to the protective cover 207, lifting the indicator plate 206 away from the inner wall of the expansion valve control body 1, thus alerting the operator. At the same time, when the operator slides the protective cover downward, the indicator plate 206 returns to its original position. While the protective cover 207 protects the button of the expansion valve control body 1 from direct sunlight or factory environment, the indicator plate also helps the operator maintain the good habit of closing the cover at any time.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual mode expansion valve controller comprising an expansion valve control body (1) characterised in that: The expansion valve control body (1) top is opened with side lifting groove (2), the inner wall of side lifting groove (2) is slidably connected with connecting piece (201), the top of connecting piece (201) is fixed with protective cover (207), the top of protective cover (207) is opened with cover surface groove (2010), one side of the bottom of connecting piece (201) is fixed with cylindrical piece, the inner wall of expansion valve control body (1) is slidably connected with double folding rail piece (202), the inner wall of double folding rail piece (202) is opened with end round sliding groove (208), the inner wall of end round sliding groove (208) is slidably connected with the circumferential surface of cylindrical piece, one side of double folding rail piece (202) is fixed with triangular side plate (203), the top one side of triangular side plate (203) is fixed with L-shaped seat plate (204), one side of L-shaped seat plate (204) is fixed with prompt plate (206) through positioning screw (205), the top of expansion valve control body (1) is opened with vertical sliding groove (209), the inner wall of vertical sliding groove (209) is slidably connected with the surface of positioning screw (205).

2. The dual operating condition expansion valve controller of claim 1, wherein: The expansion valve control body (1) top is opened with side sliding groove (3), the inner wall bottom of side sliding groove (3) is opened with ladder-shaped sliding groove (301), the inner wall of side sliding groove (3) is slidably connected with side connecting rectangle (302), the bottom of side connecting rectangle (302) is fixed with limiting ladder piece (303).

3. The dual mode expansion valve controller of claim 2, wherein: The bottom of limiting ladder piece (303) is opened with arc groove, the inner wall of ladder-shaped sliding groove (301) is fixed with positioning spring sheet (8), the surface of positioning spring sheet (8) is nested with the inner wall of arc groove.

4. The dual-condition expansion valve controller of claim 1, wherein: One side of triangular side plate (203) is fixed with back along triangular piece (4), the bottom of back along triangular piece (4) is fixed with the top of double folding rail piece (202).

5. The dual-condition expansion valve controller of claim 1, wherein: One end of cylindrical piece is fixed with limiting disc piece (5).

6. The dual-condition expansion valve controller of claim 1, wherein: The top of prompt plate (206) is fixed with prompt lamp (6) on both sides.

7. The dual-condition expansion valve controller of claim 2, wherein: The both ends of limiting ladder piece (303) are fixed with buffer pad (7).

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