Power assembly of temperature controller

Abstract

The utility model provides a power assembly of a temperature controller, which relates to the technical field of temperature control instruments and comprises a diaphragm and a cup-shaped piece, the centers of the diaphragm and the cup-shaped piece are separated to form a filling cavity, and a medium is injected into the filling cavity; the edges of the diaphragm and the cup-shaped piece are flat, and the circumferential edges of the diaphragm and the cup-shaped piece are connected in a sealed mode so that the filling containing cavity can be sealed in an air-tight mode. In the position corresponding to the filling containing cavity, the surface of the cup-shaped piece is provided with a reinforcing part used for improving the structural strength, the diaphragm is in a flat sheet shape, and the volume change of the medium enables the diaphragm to generate displacement action relative to the cup-shaped piece. The utility model has the beneficial effects that the edges of the diaphragm and the cup-shaped piece are flat, and the filling cavity forms a closed cavity in a welding manner, so that the processing is convenient, the manufacturing material is saved, and the cost is reduced; the edge welding can be performed through laser or micro-plasma welding, so that the sealing performance of the filling cavity can be further enhanced, and the leakage risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control instruments, in particular to a power component of a temperature controller. Background Art

[0002] The on-off component of the liquid expansion thermostat is a common temperature control instrument used in temperature control occasions such as the home appliance industry, electric heating equipment, and refrigeration industry. The working principle of the on-off component of the liquid expansion thermostat: Apply the principle of thermal expansion and contraction, by filling the medium into the mold box power component formed by the membrane box, capillary, and temperature sensing tube to form a closed space, and using the characteristics of thermal expansion and contraction of the internal medium, when the temperature sensing tube senses the change in external temperature, the volume of the internal medium changes to cause the diaphragm of the membrane box to displace, and the switch contacts are turned on and off. When the temperature rises, the switch is disconnected, and when the temperature drops, the switch resumes closing, realizing the temperature control function.

[0003] like Figure 1 As shown in the figure, it is the specific structure of the diaphragm box in the traditional power assembly, which specifically includes a dome-shaped disc 1, a cup 3, and a capillary 4. The middle of the disc 1 forms a diaphragm, the cup 3 is made by stamping, and the capillary 4 is welded to the cup 3. The cup 3 is the same shape as the existing 3 / 4-inch disc-shaped thermostat on the market. During the production, the disc 1 is embedded in the cup 3, and the rolling welding machine is inserted into the edge of the disc 1 in the cup 3 to complete the welding and fixing. However, the disadvantage of this structure is that the processing is complicated and Figure 1 It can be seen that the edges of the disc 1 and the cup-shaped member 3 are bent to form a cover-shaped structure, and a large amount of material is used in the production, which is not only costly but also bulky in structure, which is not conducive to promotion and popularization.

[0004] Based on this, it is necessary to propose a new type of power component of the temperature controller to overcome the above defects. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a power component of a temperature controller, which has a simple structure, is easy to process, saves manufacturing materials, and reduces costs.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A power assembly of a temperature controller includes a diaphragm and a cup-shaped member, wherein the centers of the diaphragm and the cup-shaped member are separated to form a filling cavity, and a medium is injected into the filling cavity; the edges of the diaphragm and the cup-shaped member are both flat, and the circumferential edges of the two are sealed to make the filling cavity airtight;

[0008] For the portion corresponding to the filling cavity, the surface of the cup-shaped member has a reinforcement portion for improving the structural strength, and the diaphragm is a flat sheet. The change in the medium volume will cause the diaphragm to move relative to the cup-shaped member.

[0009] Furthermore, the reinforcement portion is a bending pattern.

[0010] Furthermore, the diaphragm and the cup-shaped member are both formed to bulge outward.

[0011] Furthermore, overlapping positions for matching use are correspondingly stamped near the edges of both the diaphragm and the cup-shaped member.

[0012] Furthermore, a welding edge is provided at the junction of the circumferential edges of the diaphragm and the cup-shaped member.

[0013] Furthermore, a middle portion of the cup-shaped member is recessed to form an assembly position, and the capillary is embedded and installed in the assembly position.

[0014] Furthermore, viewed along the length direction of the capillary, the projection areas of the cup-shaped member and the diaphragm overlap.

[0015] Furthermore, one end of the capillary is connected to the cup-shaped member, a winding section is formed in the middle of the capillary, and a closed position is formed by stamping at the other end of the capillary.

[0016] Furthermore, the end of the capillary tube has a welding position.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The edges of both the diaphragm and the cup-shaped member are flat, and the filling cavity is formed into a closed cavity by welding, which is convenient for processing and helps save manufacturing materials and reduce costs. A welding edge is provided at the junction of the circumferential edges of the diaphragm and the cup-shaped member, and the welding edge can be performed by laser or micro-plasma welding, thereby further enhancing the sealing performance of the filling cavity and reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the specific structure of the diaphragm box in the traditional power assembly;

[0021] Figure 2 It is a structural schematic diagram of a power assembly according to an embodiment of the utility model;

[0022] Figure 3It is an enlarged view of the joint portion between the diaphragm and the cup-shaped member according to the embodiment of the utility model;

[0023] Figure 4 It is an enlarged view of the welding edge of the joint part of the diaphragm and the cup-shaped member described in the embodiment of the utility model;

[0024] Figure 5 It is a schematic structural diagram of the diaphragm, cup-shaped member and capillary tube described in the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Disc; 2. Diaphragm; 3. Cup-shaped piece; 301. Bending pattern; 302. Assembly position; 4. Capillary; 401. Winding section; 402. Closing position; 403. Welding position; 5. Filling cavity; 6. Overlapping position; 7. Welding edge. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] like Figure 1 The figure is a schematic diagram of the specific structure of the diaphragm box in the traditional power assembly. The structure has been described in detail in the background technology and will not be repeated here.

[0029] like Figures 2 to 5 As shown in FIG. 1 , a power assembly of a thermostat for which the utility model is requested for protection is shown, which specifically includes a diaphragm 2 and a cup-shaped member 3. The diaphragm 2 is used to generate displacement to generate an on-off action on the switch contacts of the thermostat. The main difference between the diaphragm 2 and the cup-shaped member 3 and the traditional structure is that the edges of the two are flat, that is, they are not like Figure 1 The cover-like structure shown is therefore more economical in material usage and helps reduce costs.

[0030] Specifically, the center of the diaphragm 2 and the cup 3 is separated to form a filling cavity 5, and the filling cavity 5 is filled with a medium, and Figure 2 It can be seen that the diaphragm 2 and the cup-shaped member 3 are both bulging outward, that is, the diaphragm 2 bulges in the opposite direction of the cup-shaped member 3, and the cup-shaped member 3 bulges in the opposite direction of the diaphragm 2, which helps to increase the volume of the filling cavity 5, so that the displacement of the diaphragm 2 is obvious when it is actuated, which helps to send an action signal to the switch contacts of the temperature controller.

[0031] In this embodiment, the cup-shaped member 3 is sealed with the circumferential edges of the diaphragm 2 to make the filling cavity 5 airtight, which helps the volume change of the medium after being heated to cause the diaphragm 2 of the diaphragm box to shift; for the portion corresponding to the filling cavity 5, the surface of the cup-shaped member 3 has a reinforcement portion for increasing the structural strength, that is, the hardness of the cup-shaped member 3 is relatively high, and the volume change of the medium after being heated will not cause the cup-shaped member 3 to shift, and the diaphragm 2 is a flat sheet, and the volume change of the medium will cause the diaphragm 2 to shift relative to the cup-shaped member 3.

[0032] In this embodiment, the reinforcement portion is a bending line 301 , and the provision of the bending line 301 helps to enhance the structural strength of the cup-shaped member 3 .

[0033] In this embodiment, when the cup-shaped member 3 and the diaphragm 2 are combined together, they can be welded by using flat welding equipment at the joint between the two. In order to further enhance the compactness of the combination of the two, matching overlapping positions 6 are stamped near the edges of both the diaphragm 2 and the cup-shaped member 3, which can enhance the tightness of the combination of the two and prevent relative plane sliding after the two are combined.

[0034] As a further optimization treatment, a welding edge 7 is provided at the junction of the circumferential edges of the diaphragm 2 and the cup-shaped member 3. The welding edge 7 can be made by laser or micro plasma welding, thereby further enhancing the sealing performance of the filling cavity 5 and reducing the risk of leakage.

[0035] The middle of the cup-shaped member 3 is recessed to form an assembly position 302 , and the capillary 4 is embedded and installed in the assembly position 302 , and then the capillary 4 is fixed in the assembly position 302 by welding.

[0036] like Figure 5 As shown, one end of the capillary 4 is connected to the cup-shaped member 3, a winding section 401 is formed in the middle of the capillary 4, a closing position 402 is formed by stamping at the other end of the capillary 4, and a welding position 403 is provided at the end of the capillary 4. The closing position 402 and the welding position 403 are both used to enhance the sealing of the interior of the capillary 4; wherein the capillary can be like Figure 5 The winding shape shown, but can also be wound around a larger diameter, or straight, or curved in one or more places, that is, the shape is not specifically limited, all belong to the protection scope of this application.

[0037] Viewed along the length direction of the capillary 4, the projected areas of the cup-shaped member 3 and the diaphragm 2 overlap, that is, the sizes of the two are just matched, the structure is compact, and no material is wasted.

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power assembly of a thermostat, characterized in that: The device comprises a diaphragm and a cup-shaped member, wherein the centers of the diaphragm and the cup-shaped member are separated to form a filling cavity, and the filling cavity is filled with a medium; the edges of the diaphragm and the cup-shaped member are both flat, and the circumferential edges of the two are sealed and connected to make the filling cavity airtight; For the portion corresponding to the filling cavity, the surface of the cup-shaped member has a reinforcement portion for improving the structural strength, and the diaphragm is a flat sheet. The change in the medium volume will cause the diaphragm to move relative to the cup-shaped member.

2. The power assembly of the temperature controller according to claim 1, characterized in that: The reinforcement portion is a bending pattern.

3. The power assembly of the temperature controller according to claim 1, characterized in that: The diaphragm and the cup-shaped member are both formed in a shape of protruding outwards.

4. The power assembly of the temperature controller according to claim 1, characterized in that: The membrane and the cup-shaped member are both punched with matching overlapping positions near the edges.

5. The power assembly of the temperature controller according to any one of claims 1 to 4, characterized in that: A welding edge is arranged at the joint of the circumferential edges of the diaphragm and the cup-shaped member.

6. The power assembly of the thermostat according to claim 5, characterized in that: The middle part of the cup-shaped part is recessed to form an assembly position, and the capillary is embedded and installed in the assembly position.

7. The power assembly of the thermostat according to claim 6, characterized in that: Viewed along the length direction of the capillary, the projected areas of the cup and the diaphragm overlap.

8. The power assembly of the temperature controller according to claim 6, characterized in that: One end of the capillary is connected to the cup-shaped member, the middle of the capillary forms a winding section, and the other end of the capillary is punched to form a closed position.

9. The power assembly of the temperature controller according to claim 8, characterized in that: The end of the capillary tube has a welding position.

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