Temperature sensing structure and protection controller

Abstract

The utility model provides a temperature sensing structure and a protection controller, and the temperature sensing structure comprises a diaphragm capsule seat, a capillary tube, and a temperature sensing unit. The temperature sensing unit comprises two or more than two temperature sensing pieces which are connected in series on the capillary tube; the diaphragm capsule seat is used for being connected with a temperature controller, and one end of the capillary tube is connected with the diaphragm capsule seat. According to the temperature sensing structure, the plurality of temperature sensing pieces which are connected to the capillary tube in series are arranged at different positions, so that the temperature change of two or more heating bodies or areas is sensed, the temperature feedback of each heating body or each area is realized, the structure is compact, and the cost is convenient to reduce. The problems that an existing temperature controller needs to correspondingly use a plurality of heat disconnectors to control heating bodies or areas respectively, a large space needs to be occupied, and cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of overheat protection devices, in particular to a temperature sensing structure and a protection controller. Background Art

[0002] Currently, traditionally, an overheat protection controller is used in electric water heaters or other heaters to perform temperature feedback and control.

[0003] Chinese utility model patent publication number CN2444307Y discloses a bipolar disconnect temperature controller, comprising a housing, a membrane box with a diaphragm provided on the outer wall of the housing, a conduit connecting the membrane box, a temperature sensing component connected to the conduit, and a capillary connected to the other end of the temperature sensing component. A plug is provided on the inner wall of the housing and extends outside the housing. The plug has two pieces on each side of the housing, and the two pieces on one side have plug contacts at the ends inside the housing. The push rod is also provided in the middle of the housing. Two reeds are radially connected to the push rod. One end of the reed is connected to the plug on one side of the housing, and a reed contact is provided at the other end corresponding to the plug contact. A compression spring is also provided below the diaphragm of the membrane box and the push rod.

[0004] However, the above temperature controller is only applicable to a single heating element or a single area. If multiple heating elements or multiple areas need to be controlled simultaneously, multiple thermal cut-off devices need to be used to control each heating element or each area separately, which takes up a lot of space and is costly. Utility Model Content

[0005] Based on this, in order to solve the problem that the existing temperature controller needs to use multiple thermal cut-outs to control each heating element or each area separately, which takes up a lot of space and is costly, the utility model provides a temperature sensing structure and protection controller, and its specific technical solution is as follows:

[0006] On the one hand, a temperature sensing structure includes a membrane box seat, a capillary tube and a temperature sensing unit; the temperature sensing unit includes two or more temperature sensing parts connected in series on the capillary tube; the membrane box seat is used to connect to a temperature controller, and one end of the capillary tube is connected to the membrane box seat.

[0007] The above-mentioned temperature sensing structure is provided with multiple temperature sensing elements connected in series on the capillary tube and arranged at different positions, thereby sensing the temperature changes of two or more heating elements or areas, realizing temperature feedback for each heating element or area, having a compact structure and facilitating cost reduction.

[0008] Furthermore, the temperature sensing unit includes a first temperature sensing element and a second temperature sensing element.

[0009] Furthermore, the first temperature sensing component and the second temperature sensing component are both temperature sensing cylinders welded to the capillary tube.

[0010] Furthermore, the temperature-sensing cylinder includes a cylinder body and sealing rods arranged on both sides of the cylinder body.

[0011] Furthermore, conical narrowing portions are provided on both sides of the cylinder, and the conical narrowing portions are provided with plug-in interfaces adapted to the sealing rod; and the sealing rod is welded to the plug-in interfaces.

[0012] On the other hand, a protection controller includes a temperature controller and a temperature sensing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but rather the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0014] Figure 1 This is a schematic diagram of the structure of the temperature sensing structure of an embodiment of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of the temperature sensing structure of an embodiment of the present invention. Figure 2 ;

[0016] Figure 3 It is a structural diagram of a protection controller described in an embodiment of the present utility model.

[0017] Description of reference numerals:

[0018] 1. Capsule seat; 2. Capillary tube; 3. Temperature sensing unit; 4. Temperature controller; 5. Temperature sensing structure;

[0019] 301, first temperature sensing element; 302, second temperature sensing element;

[0020] 31. Temperature sensing tube; 32. Sealing rod; 33. Cylinder body;

[0021] 331. Conical narrowing portion; 332. Plug interface. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0026] On the one hand, if Figure 1 As shown, a temperature sensing structure in one embodiment of the present invention includes a membrane box seat 1, a capillary tube 2 and a temperature sensing unit 3; the temperature sensing unit 3 includes two or more temperature sensing parts connected in series on the capillary tube 2; the membrane box seat 1 is used to be connected to a temperature controller, and one end of the capillary tube 2 is connected to the membrane box seat 1.

[0027] The above-mentioned temperature sensing structure is provided with multiple temperature sensing components connected in series on the capillary 2 and arranged at different positions, thereby sensing the temperature changes of two or more heating elements or areas, realizing temperature feedback for each heating element or area, having a compact structure and facilitating cost reduction.

[0028] In one embodiment, the temperature sensing unit 3 includes a first temperature sensing element 301 and a second temperature sensing element 302 .

[0029] In one embodiment, the first temperature sensing element 301 and the second temperature sensing element 302 are both temperature sensing tubes 31 welded to the capillary tube 2. In this way, the temperature sensing tubes 31 have a compact structure, which is convenient for reducing occupied space.

[0030] like Figure 2 As shown, in one embodiment, the temperature sensing cylinder 31 includes a cylinder 33 and sealing rods 32 provided on both sides of the cylinder 33. In this way, the sealing rods 32 are inserted into the capillary 2 to facilitate improving the processing speed of the welding process.

[0031] In one embodiment, the barrel 33 is provided with tapered narrowing portions 331 on both sides. Each tapered narrowing portion 331 has an insertion port 332 adapted to accommodate the sealing rod 32. The sealing rod 32 is welded to the insertion port 332. By utilizing the tapered narrowing portions 331 to accommodate the sealing rod 32, the welding range can be reduced, thereby increasing the welding process speed.

[0032] On the other hand, Figure 3 As shown, a protection controller in one embodiment of the present invention includes a thermostat 4 and a temperature sensing structure 5. Specifically, the thermostat 4 includes a switch and a membrane housing. The membrane housing is provided with a concave diaphragm. The capillary tube 2 and the temperature sensing cylinder 31 are both filled with a working medium. The capillary tube 2 is connected to the membrane housing and is located at the bottom of the diaphragm. When the temperature sensed by either temperature sensing cylinder 31 reaches the set temperature, the saturated vapor pressure generated by the working medium pushes the concave diaphragm upward, causing the diaphragm to jump, thereby actuating the switch and cutting off the power supply.

[0033] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A temperature sensing structure, characterized in that: It comprises a membrane box seat (1), a capillary tube (2) and a temperature sensing unit (3); The temperature sensing unit (3) comprises two or more temperature sensing elements connected in series to the capillary tube (2); The membrane box seat (1) is used to be connected to a temperature controller, and one end of the capillary tube (2) is connected to the membrane box seat (1).

2. A temperature sensing structure according to claim 1, characterized in that: The temperature sensing unit (3) comprises a first temperature sensing element (301) and a second temperature sensing element (302).

3. A temperature sensing structure according to claim 2, characterized in that: The first temperature sensing component (301) and the second temperature sensing component (302) are both temperature sensing cylinders (31) welded to the capillary tube (2).

4. A temperature sensing structure according to claim 3, characterized in that: The temperature-sensing cylinder (31) comprises a cylinder body (33) and sealing rods (32) arranged on both sides of the cylinder body (33).

5. A temperature sensing structure according to claim 4, characterized in that: Conical narrowing portions (331) are provided on both sides of the cylinder (33), and the conical narrowing portions (331) are provided with insertion ports (332) adapted to fit the sealing rod (32); The sealing rod (32) is welded to the insertion port (332).

6. A protection controller, characterized in that: The invention comprises a temperature controller and a temperature sensing structure according to any one of claims 1 to 5.

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