A capsule and liquid expansion type temperature controller

Abstract

The utility model relates to a kind of bellows and liquid expansion temperature controller, including the bellows main body of disc, the bellows main body is equipped with liquid storage cavity, the edge of the bellows main body is equipped with the bellows flanging that is bent down to the downside formation, the downside of the bellows main body is connected with lower bellows handle in central position, the top surface of the bellows main body is located in central position and is equipped with the through-hole of the communication liquid storage cavity, the upside of the bellows main body is equipped with the upper bellows handle that covers in the through-hole, upper bellows handle is equipped with the installation channel of lateral arrangement inside, the installation channel is used for capillary tube insertion, and with through-hole communication;This kind of bellows can reduce main body diameter, so that the liquid expansion temperature controller of the application of the bellows can reduce volume, so that liquid expansion temperature controller is more small and exquisite, compact, and the bellows flanging and upper bellows handle in it are set in the opposite side of bellows main body, when capillary tube is welded to upper bellows handle, it can prevent laterally cut into the welding torch contact bellows flanging, cause the burning of bellows flanging and lead to bellows leakage.

Description

Technical Field

[0001] This utility model relates to the field of liquid expansion temperature controllers, specifically a diaphragm box and a liquid expansion temperature controller. Background Technology

[0002] Currently, the diaphragm structure in liquid expansion thermostats is as follows: Figure 1 As shown, the device includes a diaphragm body (a), a diaphragm flange (b) on the edge of the diaphragm body, and a diaphragm handle (c) connected to the diaphragm body for welding capillary tubes. Both the diaphragm handle and the diaphragm flange are located on the same side of the diaphragm body. Therefore, when the production personnel weld and fix the capillary tube, the welding torch (d) will cut laterally into the diaphragm handle. However, during welding, the welding torch may simultaneously touch the diaphragm flange, causing it to burn through and resulting in a leak (e). The only solution is to increase the diameter of the diaphragm body, thereby lengthening the distance between the diaphragm flange and the diaphragm handle. At the same welding angle, increasing the distance between the welding torch and the diaphragm flange is crucial. Currently, the conventional diaphragm diameter is generally 20mm or larger. Therefore, the diameter of the diaphragm limits the ability to further reduce the size of the liquid expansion thermostat, affecting its practicality. Therefore, the applicant has improved and perfected the diaphragm structure to solve the above problems and provide a solution for consumers. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable diaphragm box and liquid expansion temperature controller.

[0004] A membrane cartridge includes a disc-shaped body with a liquid storage chamber inside. The edge of the body has a downwardly bent flange. A lower membrane cartridge handle is connected to the center of the lower side of the body. A through hole communicating with the liquid storage chamber is opened at the center of the top surface of the body. An upper membrane cartridge handle covering the through hole is provided on the upper side of the body. A laterally arranged installation channel is opened inside the upper membrane cartridge handle. The installation channel is used for capillary tube insertion and communicates with the through hole.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the diameter of the membrane box body is R, and R≤18mm.

[0006] As a further embodiment, the diameter of the membrane box body is R, and 12mm≤R≤17mm.

[0007] As a further embodiment, the membrane box body includes an upper membrane and a lower membrane, which together define a liquid storage cavity. The edges of the upper and lower membranes are bent downwards to form an outer flange and an inner flange, respectively. The outer flange and the inner flange are sealed to each other and form the membrane box flange.

[0008] As a further embodiment, the upper and / or lower diaphragm has a wavy structure.

[0009] The purpose of this utility model is achieved as follows: A liquid expansion thermostat, wherein a diaphragm with the above-described structure is assembled and connected inside the liquid expansion thermostat.

[0010] As a further embodiment, the liquid expansion thermostat includes a mounting bracket, a snap-action module connected to the lower side of the mounting bracket, a touch switch connected in series with a conductive line inside the snap-action module, a diaphragm box assembled and connected to the upper side of the snap-action module, the diaphragm box flange facing the touch switch, and a pusher between the diaphragm box and the touch switch.

[0011] As a further embodiment, the device also includes a capillary tube and a temperature sensing cylinder. One end of the capillary tube extends out of the mounting bracket and is inserted into the mounting channel after circling the upper diaphragm box handle once or more. The capillary tube is fixedly connected to the upper diaphragm box handle by welding. The other end of the capillary tube extends out of the mounting bracket and is connected to the temperature sensing cylinder.

[0012] As a further embodiment, a temperature regulating rod is threaded onto the mounting bracket. The temperature regulating rod is coaxially located on the upper side of the diaphragm box. A positioning through hole is provided inside the temperature regulating rod, and a coaxial rod that is inserted into the positioning through hole extends from the top surface of the upper diaphragm box handle.

[0013] As a further embodiment, the jump module is also connected to a throbbing steel plate, the pusher is disposed between the throbbing steel plate and the touch switch, and the lower diaphragm handle is connected to an energy storage spring, which abuts against or approaches the throbbing steel plate.

[0014] The beneficial effects of this utility model are as follows: This utility model discloses a diaphragm box and a liquid expansion thermostat. This diaphragm box can reduce the diameter of the main body, allowing the liquid expansion thermostat using this diaphragm box to be smaller and more compact. Furthermore, the diaphragm box flange and the upper diaphragm box handle are located on opposite sides of the diaphragm box body. When the capillary tube is welded to the upper diaphragm box handle, it can prevent the lateral cutting welding torch from contacting the diaphragm box flange, causing the diaphragm box flange to burn through and resulting in diaphragm box leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the background technology structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of one embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the membrane box structure in this utility model.

[0018] Figure 4 This is a schematic diagram of the liquid expansion type temperature controller in this utility model.

[0019] Figure 5 This is a schematic cross-sectional view of the liquid expansion thermostat in this utility model.

[0020] Figure 6 This is an exploded structural diagram of the liquid expansion type temperature controller in this utility model.

[0021] Figure 7 This is a top view of the mounting bracket structure in this utility model.

[0022] Figure 8 This is a cross-sectional structural diagram of other embodiments of the present invention.

[0023] Figure 9 This is a schematic diagram of the pusher structure in other embodiments of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figure 2 and Figure 3 As shown, a membrane box includes a disc-shaped membrane box body 1 with a diameter less than or equal to 18 mm. The membrane box body 1 has a liquid storage chamber 101 inside. The edge of the membrane box body 1 has a membrane box flange 2 that is bent downward. A lower membrane box handle 3 is connected to the lower side of the membrane box body 1 at the center position. A through hole 102 communicating with the liquid storage chamber 101 is opened at the center position on the top surface of the membrane box body 1. An upper membrane box handle 4 is provided on the upper side of the membrane box body 1, covering the through hole 102. A laterally arranged installation channel 401 is opened in the upper membrane box handle 4. The installation channel 401 is used for the insertion of a capillary tube 8 and communicates with the through hole 102.

[0026] This diaphragm box reduces the main body diameter, allowing the liquid expansion thermostat using this diaphragm box to be smaller and more compact. Furthermore, the diaphragm box flange 2 and the upper diaphragm box handle 4 are located on opposite sides of the diaphragm box body 1, making the periphery of the upper diaphragm box handle 4 completely open. When the capillary tube 8 is welded to the upper diaphragm box handle 4, the diaphragm box flange 2 will not interfere with the welding torch, preventing the lateral cutting welding torch from contacting the diaphragm box flange 2 and causing the diaphragm box flange 2 to burn through and leak.

[0027] In this embodiment, the diameter of the membrane box body 1 is R, and preferably 12mm≤R≤17mm; by utilizing the above-mentioned improved structure, the diameter of the membrane box body 1 can be reduced to less than 17mm, thereby reducing the volume of the liquid expansion thermostat. The liquid expansion thermostat can also be applied to products with limited installation space.

[0028] The membrane box body 1 includes an upper membrane 11 and a lower membrane 12. The upper membrane 11 and the lower membrane 12 together define a liquid storage cavity 101. The edges of the upper membrane 11 and the lower membrane 12 are bent downward to form an outer flange 21 and an inner flange 22, respectively. The outer flange 21 and the inner flange 22 are sealed to each other and form the membrane box flange 2. The upper membrane 11 and the lower membrane 12 are welded together through the outer flange 21 and the inner flange 22 to achieve a sealed connection, which can improve the connection stability between the upper membrane 11 and the lower membrane 12.

[0029] The through hole is located at the center of the upper diaphragm 11, the upper diaphragm box handle 4 is connected to the top surface of the upper diaphragm 11, and the lower diaphragm box handle is connected to the bottom surface of the lower diaphragm 12.

[0030] The upper diaphragm 11 and / or the lower diaphragm 12 have a wavy structure; the wavy structure can increase the deformation range of the diaphragm body 1, thereby increasing the sensitivity of the diaphragm.

[0031] The purpose of this utility model is achieved as follows: A liquid expansion thermostat, wherein a diaphragm with the above-described structure is assembled and connected inside the liquid expansion thermostat.

[0032] Specifically: See Figure 4 and Figure 5 As shown, the liquid expansion thermostat includes a mounting bracket 5, and a snap-action module 6 is connected to the lower side of the mounting bracket 5. The snap-action module 6 is provided with a touch switch 61 connected in series on the conductive line. The touch switch 61 is composed of at least a moving contact 6111 and a stationary contact 612. The diaphragm box is assembled and connected to the upper side of the snap-action module 6. The diaphragm box flange 2 faces the touch switch 61, and a pusher 7 is provided between the diaphragm box and the touch switch 61. This structure positions the upper membrane box handle 4 on the other side of the mounting bracket 5. Even if the capillary tube 8 is welded after the membrane box is installed on the mounting bracket 5, the orientation of the membrane box flange 2 still makes it convenient for production personnel to weld the capillary tube 8.

[0033] It also includes a capillary tube 8 and a temperature sensing cylinder 9. One end of the capillary tube 8 extends out of the mounting bracket 5 and is inserted into the mounting channel 401 after circling the upper diaphragm box handle 4 once or more. The capillary tube 8 is fixedly connected to the upper diaphragm box handle 4 by welding. The other end of the capillary tube 8 extends out of the mounting bracket 5 and is connected to the temperature sensing cylinder 9. Encircling the capillary tube 8 one or more times within the mounting bracket 5 provides a certain buffer length when the capillary tube 8 is pulled outward. Furthermore, the encircling arrangement of the capillary tube 8 can prevent bending near the upper membrane box handle 4, thus avoiding blockage of the capillary tube 8 and subsequent liquid swelling failure.

[0034] Based on the above structure, the operating principle of the liquid expansion thermostat is as follows: The temperature sensing cylinder 9 is attached to the heating element. When the temperature of the heating element exceeds the specified threshold, the liquid in the temperature sensing cylinder 9 expands and enters the liquid storage chamber 101 through the capillary tube 8. This causes the diaphragm body 1 to bulge downwards and pushes the pusher 7 downwards. The pusher 7 presses against the moving contact 6111 of the touch switch 61, causing the moving contact 6111 to separate from the stationary contact 612, thereby disconnecting the conductive circuit.

[0035] A temperature regulating rod 10 is threaded onto the mounting bracket 5. The temperature regulating rod 10 is coaxially located on the upper side of the diaphragm box. A positioning through hole 1001 is provided inside the temperature regulating rod 10. A coaxial rod 41 extends from the top surface of the upper diaphragm box handle 4 and is inserted into the positioning through hole 1001. Since the top surface of the upper diaphragm box handle 4 needs to be connected to the temperature regulating rod 10, the mounting channel 401 needs to be laterally opened inside the upper diaphragm box handle 4.

[0036] This structure allows the temperature regulating rod 10 to be turned, which moves in and out through a threaded connection, thereby moving the diaphragm box up and down. This changes the distance between the diaphragm box and the touch switch 61, thus adjusting the temperature. The cooperation between the coaxial rod 41 and the positioning through hole 1001 ensures that the temperature regulating rod 10 and the upper diaphragm box handle 4 are coaxially aligned, preventing any swaying or displacement during the pushing process. In addition, a fine-tuning screw 13 is threadedly connected inside the positioning through hole 1001. Before the product leaves the factory, the distance between the temperature regulating rod 10 and the upper diaphragm box handle 4 can be finely adjusted by adjusting the position of the fine-tuning screw 13, so that the temperature sensing action of the liquid expansion temperature controller is more accurate.

[0037] The jump module 6 is also connected to a circular, arc-shaped agitating steel sheet 62. The pusher 7 is located between the agitating steel sheet 62 and the touch switch 61. The lower diaphragm box handle 3 is connected to an energy storage spring 14, which abuts against or approaches the agitating steel sheet 62. When the energy storage spring 14 is in the process of the expansion of the diaphragm capsule main body 1, it will first press against the central position of the surface of the snap steel sheet 62 in the early stage. When both ends are restricted, the energy storage spring 14 will start to store elastic potential energy. When the elastic potential energy is stored to a certain value, the snap steel sheet 62 is forced to deform downward instantaneously, so as to quickly push the pushing member 7 to press the movable contact piece 6111 to separate from the static contact piece 612 and disconnect the conductive circuit. The rapid separation of the movable contact piece 6111 and the static contact piece 612 can avoid electric arc between the two, and greatly improve the service life of the touch switch.

[0038] Referring to Figure 6 and Figure 7 as shown, the snap module 6 further comprises a circular housing 53, a guide cover 54 arranged on the top of the circular housing 53, and a metal sealing cover 55 for encapsulating the guide cover 54. The movable contact piece 611 and the static contact piece 612 are disposed in the circular housing 53, and a guide channel in sliding fit with the pushing member 7 is provided between the metal sealing cover 55 and the guide cover 54; The snap module 6 of this structure is similar to the snap-action temperature controller in the prior art, the difference is that the bimetallic strip and the snap steel sheet are not arranged at the same time, and the guide channel comprises a guide hole 541 opened on the guide cover 54, the pushing member 7 is mainly in linear sliding fit with the guide hole, and the metal sealing cover 55 is provided with an avoiding opening 551 corresponding to the guide hole, so that the energy storage spring 14 passes through the avoiding opening 551 and abuts against the snap steel sheet 62.

[0039] The mounting bracket 5 has a "∩" shaped structure, and two bottom ends of the mounting bracket 5 are provided with lower mounting lugs 83 formed by outward folding, the lower mounting lugs 83 are provided with lower connecting holes 831, the metal sealing cover 55 is integrally connected with oppositely arranged connecting lugs 56, the connecting lugs 56 are provided with first connecting holes 561 corresponding to the lower connecting holes 831, and fasteners such as screws pass through the first connecting holes 561 and the lower connecting holes 831 in sequence, so that the snap module 6 is connected to the mounting bracket 5.

[0040] The mounting bracket 5 comprises a support top plate 81 and support side plates 82 connected to the left and right sides of the support top plate 81, the width of the support side plates 82 is the same as that of the support top plate 81, and the connecting lugs 56 are integrally connected to the bottom of the support side plates 82.

[0041] Opposite sides of the top of the mounting bracket 5 are provided with upper mounting lugs 84 formed by outward bending, the upper mounting lugs 84 are provided with upper connecting holes 841 for mounting the liquid expansion type temperature controller, and the lower mounting lugs 83 and the upper mounting lugs 84 are arranged opposite to each other in the vertical direction; This mounting bracket 5 places the lower mounting ear 83 and the upper mounting ear 84 on the left and right sides, which can make full use of the lateral space of the bracket structure and reduce the longitudinal area of ​​the mounting bracket 5. This allows the liquid expansion thermostat to maintain a compact structure, facilitates the installation of the liquid expansion thermostat, and reduces the requirements for installation space.

[0042] In this embodiment, a plate is stamped out on the support side plate 82 to connect with the side of the support top plate 81. The plate is bent twice to form an upper mounting ear 84. The upper mounting ear 84 is stamped out by the support side plate 82 itself. This structure eliminates the need to fix or weld the upper mounting ear 84 to the mounting bracket 5, which can improve production efficiency. Moreover, the support side plate 82 forms a window at the position where the upper mounting ear 84 is stamped out, which helps the heat dissipation of the diaphragm structure and avoids the temperature around the liquid expansion thermostat from affecting the expansion of the diaphragm.

[0043] In this embodiment, the lower connecting hole 831 and the upper connecting hole 841 are arranged opposite each other on the same side, with the upper connecting hole 841 positioned to the outer side relative to the lower connecting hole 831; the lower connecting hole 831 and the upper connecting hole 841 are not coaxially arranged, and the lower connecting hole 831 and the upper connecting hole 841 are arranged on the same vertical plane X, so that the connection points of the liquid expansion thermostat are set in symmetrical positions, making the installation more stable; The moving contact 611, the stationary contact 612, and the pushing member 7 are all located within the orthographic projection range Y below the diaphragm box; or the circular outer shell 53 is located within the orthographic projection range Y below the diaphragm box. This liquid expansion thermostat places the moving contact 611 and the stationary contact 612 within the orthographic projection range of the lower side of the diaphragm box, which reduces the size of the housing that assembles the moving contact 611 and the stationary contact 612, reduces the radial width of the liquid expansion thermostat, keeps the entire thermostat compact, saves packaging space, and reduces transportation costs.

[0044] The mounting bracket 5 has openings 101 on both the front and rear sides. Encapsulation plates 562 are covered at the openings 101. The two encapsulation plates 562 and the mounting bracket 5 together enclose and define a shielded cavity. The diaphragm box and the energy storage spring 7 are arranged in the shielded cavity. The two encapsulation plates 562 are connected to the snap-on module 6 or the mounting bracket 5. The mounting housing of this liquid expansion temperature controller consists of two parts: a mounting bracket 5 and an encapsulation plate 562. The encapsulation plates 562 on both sides of the mounting bracket 5 do not need to provide support, so they can be set independently. This allows the encapsulation plates 562 to be made of a thinner sheet metal material than the mounting bracket 5, thereby reducing the production cost of the mounting housing and the overall cost of the liquid expansion temperature controller.

[0045] In this embodiment, the two encapsulation plates 562 are integrally connected to the front and rear sides of the metal cover 55. The sheet metal material used to manufacture the metal cover 55 is also thinner than that used in the mounting bracket 5. Therefore, integrally molding the encapsulation plates 562 and the metal cover 55 can improve production efficiency, further simplify the structure of the liquid expansion temperature controller, and reduce costs. After the switch housing is assembled and connected to the mounting bracket 5, the encapsulation of the encapsulation plates 562 can be completed simply by bending them upwards.

[0046] Other embodiments: In other embodiments, see Figure 8 and Figure 9 As shown, the top end of the pusher 7 is connected to the lower diaphragm handle 3. The pusher 7 extends into the jump module 6 through the guide channel. The pusher 7 directly abuts against or is adjacent to the moving contact piece 611.

[0047] The pusher 7 includes a main rod 521 and a connector 522. The connector 522 is integrally disposed at the top end of the main rod 521, and a blind hole 523 is axially opened on the connector 522. The lower membrane box handle 3 is tightly inserted into the blind hole 523. The structure is simple and easy to install, and the pusher 7 can be tightly inserted into the lower membrane box handle 3 to complete the installation.

[0048] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. 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 illustrative of the principles of this 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 protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A membrane cartridge, comprising a disc-shaped membrane cartridge body, wherein a liquid storage chamber is provided within the membrane cartridge body, and the edge of the membrane cartridge body is provided with a membrane cartridge flange bent downwards, and a lower membrane cartridge handle is connected to the lower side of the membrane cartridge body at the center position, characterized in that: The top surface of the membrane box body has a through hole at the center position that connects to the liquid storage chamber. The upper side of the membrane box body has an upper membrane box handle that covers the through hole. The upper membrane box handle has a side-mounted installation channel, which is used for capillary tube insertion and communicates with the through hole.

2. The membrane box according to claim 1, characterized in that: The diameter of the membrane box body is R, and R≤18mm.

3. A membrane box according to claim 2, characterized in that: The diameter of the membrane box body is R, and 12mm≤R≤17mm.

4. A membrane box according to claim 1, characterized in that: The membrane box body includes an upper membrane and a lower membrane. The upper membrane and the lower membrane together define a liquid storage cavity. The edges of the upper membrane and the lower membrane are bent downward to form an outer flange and an inner flange, respectively. The outer flange and the inner flange are sealed to each other and form the membrane box flange.

5. A membrane box according to claim 4, characterized in that: The upper and / or lower diaphragm has a wavy structure.

6. A liquid expansion type temperature controller, characterized in that: The liquid expansion thermostat is internally fitted with a diaphragm box as described in any one of claims 1-5.

7. A liquid expansion type temperature controller according to claim 6, characterized in that: The liquid expansion thermostat includes a mounting bracket, a snap-action module connected to the lower side of the mounting bracket, a touch switch connected in series with a conductive line inside the snap-action module, a diaphragm box assembled and connected to the upper side of the snap-action module, the diaphragm box flange facing the touch switch, and a pusher between the diaphragm box and the touch switch.

8. A liquid expansion type temperature controller according to claim 7, characterized in that: It also includes a capillary tube and a temperature sensing cylinder. One end of the capillary tube extends out of the mounting bracket and is inserted into the mounting channel after circling the upper diaphragm box handle once or more. The capillary tube is fixedly connected to the upper diaphragm box handle by welding. The other end of the capillary tube extends out of the mounting bracket and is connected to the temperature sensing cylinder.

9. A liquid expansion type temperature controller according to claim 7, characterized in that: A temperature regulating rod is threaded onto the mounting bracket. The temperature regulating rod is coaxially located on the upper side of the diaphragm box. A positioning through hole is provided inside the temperature regulating rod. A coaxial rod that is inserted into the positioning through hole extends from the top surface of the upper diaphragm box handle.

10. A liquid expansion type temperature controller according to claim 7, characterized in that: The jump module is also connected to a pulsating steel plate. The pusher is located between the pulsating steel plate and the touch switch. The lower diaphragm handle is connected to an energy storage spring, which abuts against or approaches the pulsating steel plate.

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