A new temperature measuring device without temperature measuring wire

Abstract

A novel temperature measuring device according to the present invention eliminates the need for a temperature measuring lead wire on the heated body, thereby completely eliminating the potential hazards associated with metal wire breakage within the temperature measuring head. By eliminating the need for a wire containing metal, metal materials are conserved, further conserving metal resources. Because the temperature measuring head is sealed between an upper silicone rubber sheet and a lower silicone rubber sheet, the device can accurately sense and control temperature.

Description

Technical Field

[0001] The invention relates to a novel temperature measuring device which does not contain a temperature measuring wire. Background Art

[0002] In the existing temperature measuring device manufacturing technology, the device for temperature control consists of three parts: a temperature measuring head, a temperature measuring head wire, and a temperature controller. The temperature measuring head is placed at the center of the heated body, and the temperature measuring head wire is also placed on (inside) the heated body. The temperature measuring head wire is composed of an insulating outer skin and a metal wire.

[0003] The temperature measuring head wire extends from the center of the heated body to the edge, with a long distance in between (for example, the length is as long as 40 to 50 cm in existing electric blanket manufacturing technology). The metal wire inside the temperature measuring head wire is relatively thin (0.3 to 0.4 mm in diameter). Because it is often stretched and folded during use, it is very easy for the metal wire inside the temperature measuring head wire to break, which may lead to a series of potential dangers. Summary of the Invention

[0004] The present invention aims to address the aforementioned shortcomings of the prior art. It provides a novel temperature measuring device that eliminates the need for temperature measuring wires on the heated body. The device comprises: a heated body, an upper silicone rubber sheet and a lower silicone rubber sheet (60mm*60mm, 3.5mm thick), copper tubes welded to each end of the temperature measuring head, a positive conductive wire connecting to the copper tube terminal, and a negative conductive wire connecting to the copper tube terminal. Four screws secure the upper and lower silicone rubber sheets. The temperature measuring head is positioned between the upper and lower silicone rubber sheets on the flat edge of the heated body.

[0005] Beneficial effects

[0006] ① The novel temperature measuring device of the present invention eliminates the temperature measuring wire on the heated body, thereby completely eliminating a series of potential dangers caused by the breakage of the metal wire in the temperature measuring head wire.

[0007] ② Since wires containing metal wires are no longer used, metal materials can be saved and metal resources can be better saved.

[0008] ③ Since the temperature measuring head in the temperature measuring device of the present invention is in a sealed state between the upper silicone rubber sheet and the lower silicone rubber sheet, the temperature can be accurately sensed and controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a plan view of the heated body and the temperature measuring device.

[0010] Figure 2 These are pictures of the upper and lower silicone rubber sheets.

[0011] Figure 3 This is a picture of the temperature measuring head.

[0012] Figure 4 This is a diagram of welding copper pipes.

[0013] Figure 5 This is a diagram of the terminal copper tube.

[0014] Specific implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and one of the embodiments (used in an electric blanket).

[0016] Silicone rubber upper and lower pieces of the temperature measuring device:

[0017] Existing electric blanket manufacturing technology places a temperature probe at the center of the blanket's surface to monitor the temperature of the heating wire. However, the probe actually contacts the heat emitted by the blanket. When the probe's temperature falls below the set point, it sends a feedback signal to the temperature controller, turning on the power supply for heating. The measured thermal conductivity of the blanket is between 0.03 and 0.04 W / mk. Because the temperature probe in the present invention is sandwiched between the upper and lower silicone rubber sheets, meaning that the upper and lower silicone rubber sheets replace the blanket's heat output, the thermal conductivity of the upper and lower silicone rubber sheets must be essentially the same as the blanket's to achieve the desired heat dissipation effect.

[0018] To ensure that the thermal conductivity of the silicone rubber upper and lower sheets of the present invention is substantially the same as that of a quilt, graphene and other fillers are mixed with the silicone rubber during production. The percentages of the various fillers are adjusted to achieve a thermal conductivity substantially equivalent to that of the quilt, and the sheets are then molded into the upper and lower sheets. The lower silicone rubber sheet has four longitudinal, semi-lunar grooves on its plane. Two of these longitudinal grooves house the copper tubes welded to the ends of the temperature probe, while the other two longitudinal grooves house the copper tubes for connecting the positive and negative conductive wires. A transverse groove is provided for accommodating the temperature probe 4. The semi-lunar grooves on the upper silicone rubber sheet correspond to those on the lower silicone rubber sheet.

[0019] Temperature measuring head: 20mm in length, 3mm in diameter, with metal wires of 0.8mm in diameter and 5mm in length at both ends for welding copper pipes.

[0020] Two welded copper tubes: 35mm in length and 5mm in diameter, welded to the temperature measuring head, used as jacks, and also the jacks for the wire plugs issued by the temperature controller.

[0021] Two-terminal copper tube: 40mm in length, 5mm in diameter. The copper tube has its own connection terminals, which are used to connect the positive and negative poles of the conductive wire respectively. The copper tube is used as a jack, which is the jack of the current wire plug.

[0022] The present invention is specifically implemented as follows:

[0023] Step 1: After welding the copper tubes 5 at both ends of the temperature measuring head 4, place it on the edge of the plane of the heated body 1, and place the temperature measuring head close to the heating wire in the heated body 1, and then use the terminal copper tubes 7 and terminal copper tubes 9 to connect the positive and negative conductive wires in the heated body 1 respectively.

[0024] Step 2: Place the lower silicone rubber sheet 3 under the heated body 1. At this time, place the above-mentioned four copper tubes into the corresponding four half-moon grooves, and place the temperature measuring head 4 in the transverse groove of the lower silicone rubber sheet 3. Then, press the upper silicone rubber sheet 2 onto the corresponding positions of the above-mentioned four copper tubes and fix them up and down with screws around the lower silicone rubber sheet 3 and the upper silicone rubber sheet 2 so that the entire silicone rubber is fixed at the edge of the plane of the heated body 1.

[0025] The above describes this patent and its implementation methods. This description is not restrictive. What is shown in the accompanying drawings is only one of the implementation methods of this patent, and the actual structure is not limited to this.

Claims

1. A novel temperature measuring device, comprising a heated body (1), an upper silicone rubber sheet (2), and a lower silicone rubber sheet (3), a temperature measuring head (4) having copper tubes (5) welded to both ends, a positive conductive wire (6) connected to a terminal copper tube (7), a negative conductive wire (8) connected to a terminal copper tube (9), and four screws fixing the upper and lower silicone rubber sheets, characterized in that: The temperature measuring head (4) is located between the upper silicone rubber sheet (2) and the lower silicone rubber sheet (3) of the temperature measuring device on the edge of the plane of the heated body (1).

2. A novel temperature measuring device according to claim 1, characterized in that: There are longitudinal half-moon grooves on the planes of the upper silicone rubber sheet (2) and the lower silicone rubber sheet (3), respectively. Copper tubes welded at both ends of the temperature measuring head are placed in two of the longitudinal grooves. The copper tubes are used as jacks and are also the jacks for the wire plugs issued by the temperature controller. Terminal copper tubes for connecting the positive and negative conductive wires are placed in the other two longitudinal grooves. The copper tubes have their own connection terminals and are also used as jacks and are the jacks for the current wire plugs.

Images