Liquid expansion type temperature controller structure

Abstract

The utility model relates to a liquid expansion type temperature controller structure which comprises a housing assembly, an adjusting assembly, a temperature control assembly, a static contact piece and a terminal are respectively arranged in the housing assembly, the liquid expansion type temperature controller structure is further provided with a temperature sensing cylinder and a stainless steel capillary tube, and the temperature sensing cylinder enters the housing assembly through the stainless steel capillary tube and is communicated and matched with the temperature control assembly. A reed is arranged between the static contact piece and the terminal, the temperature control assembly is in switch fit with the static contact piece and the terminal through the reed, the adjusting assembly comprises an adjusting shaft and a stroke screw, the adjusting assembly is in contact fit with the temperature control assembly through the stroke screw, and the temperature control assembly comprises a communication block, a diaphragm capsule assembly and a push rod. The temperature control assembly is communicated and matched with the stainless steel capillary through the communication block. According to the technical scheme, the structure is reasonable, the problem that power loss is caused by mechanical friction, part deformation and other factors, and consequently the control precision is affected can be solved, and it is guaranteed that after the technical scheme is used for a long time, normal work can still be guaranteed, and meanwhile the precision is not affected.

Description

Technical Field

[0001] This utility model relates to a temperature controller, and more particularly to a liquid expansion temperature controller structure. Background Technology

[0002] A thermostat is a device used to control temperature, widely used in home appliances, industrial applications, and the automotive industry. Liquid expansion thermostats utilize the principle of thermal expansion and contraction of a liquid (usually a special temperature-sensitive liquid). When the temperature rises, the liquid expands, pushing a piston or diaphragm, which in turn controls the circuit through mechanical transmission. This type of thermostat offers relatively high accuracy and is often used in applications with stringent temperature control requirements, such as oil temperature control in some industrial equipment.

[0003] However, traditional liquid expansion thermostats suffer from significant power transmission losses: their power transmission relies on mechanical structures such as levers or push rods. During power transmission, power loss is easily caused by factors such as mechanical friction and component deformation, which affects control accuracy and leads to a certain deviation between the actual temperature and the set temperature. At the same time, the internal structure is relatively complex, resulting in a cumbersome production and assembly process, low production efficiency, and high manufacturing costs. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a liquid expansion thermostat structure, including a housing assembly, in which an adjustment component, a temperature control component, a stationary contact plate, and a terminal are respectively installed, and a temperature sensing cylinder and a stainless steel capillary tube are also included. The temperature sensing cylinder enters the housing assembly through the stainless steel capillary tube and communicates with the temperature control component. A spring is provided between the stationary contact plate and the terminal, and the temperature control component achieves switching cooperation with the stationary contact plate and the terminal through the spring. The adjustment component includes an adjustment shaft and a stroke screw, and the adjustment component contacts the temperature control component through the stroke screw. The temperature control component includes a connecting block, a diaphragm assembly, and a push rod. The temperature control component communicates with the stainless steel capillary tube through the connecting block and contacts the spring through the push rod.

[0005] Preferably, the housing assembly includes a fixed plate, a housing, and a base, which are fixedly installed from top to bottom to form a whole. The stationary contact and the terminal are fixedly installed in the inner cavity of the base, and the spring is movably disposed between the two. The wiring terminals of the stationary contact and the terminal are exposed in the base. The adjusting shaft is threaded on the fixed plate, and the stroke screw is disposed in the inner cavity of the adjusting shaft. The lower end of the adjusting shaft passes through the fixed plate, and the connecting block of the temperature control assembly contacts and engages with the stroke screw.

[0006] Preferably, the upper end of the connecting block has a mating post extending into the inner cavity of the adjusting shaft, and a steel ball is located between the stroke screw and the mating post in the inner cavity of the adjusting shaft. The body of the connecting block has a flow channel, and the connecting block is connected to the stainless steel capillary tube and the diaphragm assembly through the flow channel. The lower end of the diaphragm assembly has a push rod, and the diaphragm assembly drives the push rod to contact and engage with the spring.

[0007] Preferably, the membrane box assembly includes an upper membrane box sheet and a lower membrane box sheet stacked on top of each other, and a rigid core is provided between the membrane box assembly and the push rod.

[0008] Preferably, a stationary contact is fixedly mounted on one end of the base, the rear end of the spring is fixedly mounted on one end of the base, the front end of the spring is suspended below the stationary contact, and a moving contact is fixedly mounted on the front end of the spring.

[0009] Preferably, a limiting piece is fixedly installed on the outer periphery of the adjusting shaft, and the surface of the fixing plate has a stop block that cooperates with the limiting piece.

[0010] By means of the above solution, this utility model has at least the following advantages:

[0011] The technical solution of this application achieves adjustable temperature control through an adjustment component, a temperature control component, a static contact plate, a terminal, a temperature sensing cylinder, and a stainless steel capillary tube. Furthermore, the adjustment component and the temperature control component can be directly installed from top to bottom in the inner cavity of the housing component, and the power is directly transmitted, which simplifies the structure and avoids power loss.

[0012] Furthermore, in the technical solution of this application, the connection between the regulating component and the temperature control component is achieved through a connecting block. This structure can greatly simplify the internal structure of the temperature controller, enabling the regulating component and the temperature control component to make contact and cooperate, while ensuring that the stainless steel capillary tube is directly connected to the diaphragm assembly through the flow channel of the connecting block, thus making the temperature transmission more accurate.

[0013] Meanwhile, the stroke screw of the adjustment component is engaged with the connecting block through the contact of steel balls. Due to the material and structure of the steel balls themselves, they are more wear-resistant and the friction is greatly reduced. This avoids the problem of power loss caused by mechanical friction, component deformation and other factors, which would affect the control accuracy. This ensures that the technical solution of this application can still work normally after long-term use without affecting the accuracy.

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a liquid expansion thermostat according to this application;

[0017] Figure 2 This is a three-dimensional structural diagram of a liquid expansion thermostat structure after the cover is removed;

[0018] Figure 3 This is a schematic diagram showing the structural relationship between the regulating component and the temperature control component in this application;

[0019] Figure 4 This is a schematic diagram of the structural relationship between the travel screw and the connecting block in this application.

[0020] In the diagram: 1. Cover assembly, 2. Adjustment assembly, 3. Temperature control assembly, 4. Static contact plate, 5. Terminal, 6. Temperature sensing cylinder, 7. Stainless steel capillary tube, 8. Spring, 9. Adjustment shaft, 10. Stroke screw, 11. Connecting block, 12. Diaphragm assembly, 13. Push rod, 14. Fixing plate, 15. Cover, 16. Base, 17. Matching column, 18. Steel ball, 19. Flow channel, 20. Limiting plate, 21. Stop block, 22. Hard core. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] See Figures 1-4 The preferred embodiment of this utility model describes a liquid expansion thermostat structure, including a housing assembly 1. The housing assembly 1 houses an adjustment assembly 2, a temperature control assembly 3, a stationary contact plate 4, and a terminal 5. It also includes a temperature sensing cylinder 6 and a stainless steel capillary tube 7. The temperature sensing cylinder 6 enters the housing assembly 1 through the stainless steel capillary tube 7 and communicates with the temperature control assembly 3. A spring 8 is located between the stationary contact plate 4 and the terminal 5. The temperature control assembly 3 uses the spring 8 to switch with the stationary contact plate 4 and the terminal 5. The adjustment assembly 2 includes an adjustment shaft 9 and a stroke screw 10. The adjustment assembly 2 contacts the temperature control assembly 3 through the stroke screw 10. The temperature control assembly 3 includes a connecting block 11, a diaphragm assembly 12, and a push rod 13. The temperature control assembly 3 communicates with the stainless steel capillary tube 7 through the connecting block 11 and contacts the spring 8 through the push rod 13.

[0023] Preferably, the housing assembly 1 includes a fixing plate 14, a housing 15, and a base 16, which are fixedly installed from top to bottom to form an integral whole. The stationary contact 4 and the terminal 5 are fixedly installed in the inner cavity of the base 16, and the spring 8 is movably disposed between the two. The wiring terminals of the stationary contact 4 and the terminal 5 are exposed in the base 16. The adjusting shaft 9 is threaded on the fixing plate 14, and the stroke screw 10 is disposed in the inner cavity of the adjusting shaft 9. The lower end of the adjusting shaft 9 passes through the fixing plate 14. The connecting block 11 of the temperature control assembly 3 is in contact with the stroke screw 10.

[0024] Preferably, the upper end of the connecting block 11 has a mating post 17 that extends into the inner cavity of the adjusting shaft 9. A steel ball 18 is located between the stroke screw 10 and the mating post 17 in the inner cavity of the adjusting shaft 9. The body of the connecting block 11 has a flow channel 19. The connecting block 11 is connected to the stainless steel capillary tube 7 and the diaphragm assembly 12 through the flow channel 19. The lower end of the diaphragm assembly 12 has a push rod 13, and the diaphragm assembly 12 drives the push rod 13 to contact and engage with the spring 8.

[0025] Preferably, the membrane box assembly 12 includes an upper membrane box sheet and a lower membrane box sheet stacked on top of each other, and a rigid core 22 is provided between the membrane box assembly 12 and the push rod 13.

[0026] Preferably, a stationary contact 4 is fixedly mounted on one end of the base 16, the rear end of the spring 8 is fixedly mounted on one end of the base 16, the front end of the spring 8 is suspended below the stationary contact 4, and a moving contact is fixedly mounted on the front end of the spring 8.

[0027] Preferably, a limiting piece 20 is fixedly installed on the outer periphery of the adjusting shaft 9, and the surface of the fixing plate 14 has a stop block 21 that cooperates with the limiting piece 20.

[0028] The working principle of this utility model is as follows:

[0029] In use, rotating the adjusting shaft 9 allows the stroke screw 10 to apply force to the mating post 17 of the connecting block 11 through the steel ball 18, thereby achieving the purpose of the adjusting component 2 controlling the temperature control component 3 to disconnect the temperature. The temperature sensing cylinder 6 can contact the device, and the temperature sensing liquid reaches the connecting block 11 through the stainless steel capillary tube 7, and finally contacts the diaphragm assembly 12. When a certain temperature is reached, the temperature sensing liquid expands and pushes the diaphragm assembly 12, which in turn pushes the push rod 13, causing the suspended section at the front end of the spring 8 to move, separating the moving contact from the stationary contact, and achieving the purpose of circuit breaking.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A liquid expansion thermostat structure, characterized in that: The assembly includes a housing assembly (1), which houses an adjustment assembly (2), a temperature control assembly (3), a stationary contact plate (4), and a terminal (5). It also includes a temperature sensing cylinder (6) and a stainless steel capillary tube (7). The temperature sensing cylinder (6) enters the housing assembly (1) through the stainless steel capillary tube (7) and communicates with the temperature control assembly (3). A spring (8) is located between the stationary contact plate (4) and the terminal (5). The temperature control assembly (3) communicates with the stationary contact plate (5) via the spring (8). The switch of the plate (4) and the terminal (5) is coordinated. The adjustment component (2) includes an adjustment shaft (9) and a stroke screw (10). The adjustment component (2) is in contact with the temperature control component (3) through the stroke screw (10). The temperature control component (3) includes a connecting block (11), a diaphragm assembly (12) and a push rod (13). The temperature control component (3) is in communication with the stainless steel capillary tube (7) through the connecting block (11) and is in contact with the spring plate (8) through the push rod (13).

2. The liquid expansion thermostat structure according to claim 1, characterized in that: The housing assembly (1) includes a fixing plate (14), a housing (15) and a base (16), which are fixedly installed from top to bottom to form a whole. The stationary contact (4) and the terminal (5) are fixedly installed in the inner cavity of the base (16) and the spring (8) is movably disposed between the two. The wiring ends of the stationary contact (4) and the terminal (5) are exposed on the base (16). The adjusting shaft (9) is threaded on the fixing plate (14) and the stroke screw (10) is disposed in the inner cavity of the adjusting shaft (9). The lower end of the adjusting shaft (9) passes through the fixing plate (14). The connecting block (11) of the temperature control assembly (3) is in contact with the stroke screw (10).

3. The liquid expansion thermostat structure according to claim 2, characterized in that: The upper end of the connecting block (11) has a mating post (17) that extends into the inner cavity of the adjusting shaft (9). There is a steel ball (18) in the inner cavity of the adjusting shaft (9) between the stroke screw (10) and the mating post (17). The body of the connecting block (11) has a flow channel (19). The connecting block (11) is connected to the stainless steel capillary tube (7) and the diaphragm assembly (12) through the flow channel (19). The lower end of the diaphragm assembly (12) has a push rod (13) and the diaphragm assembly (12) drives the push rod (13) to contact and engage with the spring (8).

4. The liquid expansion thermostat structure according to claim 3, characterized in that: The membrane box assembly (12) includes an upper membrane box sheet and a lower membrane box sheet stacked on top of each other, and a hard core (22) is provided between the membrane box assembly (12) and the push rod (13).

5. A liquid expansion thermostat structure according to claim 1 or 2, characterized in that: The stationary contact (4) is fixedly mounted on one end of the base (16), the rear end of the spring (8) is fixedly mounted on one end of the terminal (5) located on the base (16), the front end of the spring (8) is suspended below the stationary contact (4), and the front end of the spring (8) is fixedly mounted with a moving contact.

6. The liquid expansion thermostat structure according to claim 2, characterized in that: The outer periphery of the adjusting shaft (9) is fixedly equipped with a limiting piece (20), and the surface of the fixing plate (14) has a stop block (21) that cooperates with the limiting piece (20).

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