A new type of thermostat

Abstract

The present invention relates to a novel thermostat, including two thermostats that share the same bimetallic strip, the two thermostats are arranged in an upper and lower mirror image, and both thermostats include an insulating component and a connecting component arranged on the insulating component, the connecting component includes an upper and lower spring sheet, a vertical insulating column and a fixed contact sheet, the left end of the fixed contact sheet and the left end of the upper spring sheet are separated and fixed on the insulating component, and a moving contact is provided at the bottom of the left end of the lower spring sheet; a bimetallic strip is provided at the bottom of the insulating component; a pressure plate is provided at the top of the insulating component, and the left end of the pressure plate is fixed on the insulating component; a pressure regulating device is provided in the middle of the pressure plate, and the pressure regulating device includes a threaded knob and a limit lever arranged on the pressure plate, and a limit ring is provided on the outer side of the threaded knob. The present invention designs a novel thermostat, which includes two thermostats that share a bimetallic strip, and is very convenient to use in conjunction with a thermostat life detection machine, and no additional current sensor is required.

Description

Technical Field

[0001] The invention relates to the field of temperature controllers, and in particular to a novel temperature controller. Background Art

[0002] Metal expansion thermostats are widely used in various electrical appliances. They open and close circuits according to changes in ambient temperature, causing the set protection circuit to start working.

[0003] At present, there are machines for detecting the life of thermostats on the market. The working principle is as follows: the detection machine has a heating device and a blowing device. The specific detection method is to first heat the thermostat through the heating device to make the bimetallic strip in the tested thermostat in a disconnected state, and then use the blowing device to blow air at the tested thermostat to lower the temperature of the tested thermostat, thereby resetting the bimetallic strip in the tested thermostat. The aforementioned process is a one-time detection process of the thermostat. The detection of the life of the thermostat requires repeated detection of the aforementioned detection process. Usually, conventional thermostats need to be performed about 100,000 times. Different numbers of test cycles can be set according to different thermostat life requirements.

[0004] In the prior art, the two terminals of the measured thermostat are connected to the circuit, and a current sensor is set to detect the current signal in the circuit, and the current sensor is then connected to the controller. In the actual detection process, the heating device heats the measured thermostat to make the bimetallic strip of the measured thermostat in the disconnected state. At this time, the current sensor detects that the circuit is disconnected, sends a stop heating signal to the controller, and turns on the air blowing device; similarly, the air blowing device puts the bimetallic strip of the measured thermostat in the on state, the circuit sensor detects the current signal, sends a stop blowing signal to the controller, and starts the heating device.

[0005] Although the above-mentioned machine for detecting the life of the thermostat is ingeniously designed, there is still room for improvement in its use. Summary of the invention

[0006] In order to overcome the shortcomings of the prior art, the present invention designs a new type of thermostat, which includes two thermostats that share a bimetallic strip. It is very convenient to use with a thermostat life detection machine, and no additional current sensor is required.

[0007] The invention provides a novel temperature controller, comprising two temperature controllers which share a same bimetallic strip, and the two temperature controllers are arranged in upper and lower mirror images.

[0008] Preferably, the two thermostats each include an insulating component and a connecting component arranged on the insulating component, the connecting component includes an upper spring sheet, a lower spring sheet, a vertical insulating column and a fixed contact sheet, the left end of the fixed contact sheet and the left end of the upper spring sheet are separately fixed to the insulating component, the right end of the upper spring sheet extends to the lower right to form a bent portion and is fixed to the top of the vertical insulating column with the right end of the lower spring sheet, a moving contact is provided at the bottom of the left end of the lower spring sheet, and a static contact is provided upward at a position of the fixed contact sheet vertically corresponding to the moving contact; the bimetallic strip is provided at the bottom of the insulating component, the left end of the bimetallic strip is fixed to the bottom of the insulating component, and the right end of the bimetallic strip is fixed to the vertical insulating column. The bottom of the edge column; a pressure plate is provided on the top of the insulating component, and the left end of the pressure plate is fixed on the insulating component; a pressure regulating device is provided in the middle of the pressure plate, and the pressure regulating device includes a threaded knob and a limit lever arranged on the pressure plate, a limit ring is provided on the outer side of the threaded knob, the limit ring is sleeved on the threaded knob, and extends outward to be provided with a limit convex piece that cooperates with the limit lever, a pressure rod in contact with the upper spring sheet is provided below the threaded knob, and the static contact and the moving contact are contacted with each other through the pressure rod, so that a closed circuit is formed between the upper spring sheet and the fixed contact sheet; an external wiring port is also provided on the insulating component between the fixed contact sheet and the bimetallic strip.

[0009] Preferably, the vertical insulating column is made of ceramic insulating material.

[0010] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0011] The machine for detecting the life of the thermostat using the new thermostat of the present invention does not need to be equipped with an additional current sensor. When in use, one of the thermostats of the new thermostat is connected to the heating device, and the other is connected to the blowing device. Assuming that the thermostat connected to the heating device is in a connected state, when the heating device heats the thermostat until the bimetallic strip of the thermostat is bent and is in a disconnected state, the heating device stops working. At the same time, because the same bimetallic strip is shared, the other thermostat reaches a connected state, so that the blowing device is connected to blow air to cool the thermostat connected to the heating device.

[0012] At the same time, the invention is cleverly designed, so that the structure of the machine for detecting the life of the thermostat can be simpler, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a novel temperature controller of the present invention;

[0014] Figure 2 This is the connection block diagram of the working principle of the new temperature controller.

[0015] Figure numbers: 1-bimetallic strip; 2-upper spring strip; 3-lower spring strip; 31-vertical insulating column; 4-fixed contact piece; 5-moving contact; 6-static contact; 7-pressure plate; 8-threaded knob; 9-limiting lever; 10-limiting ring; 11-limiting protrusion; 12-pressure rod; 13-external wiring port. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all possible alternatives, improvements and equivalents within the scope of the claims.

[0017] Embodiment 1

[0018] like Figure 1-2 As shown, a new type of thermostat is shown, including two thermostats that share the same bimetallic strip 1, and the two thermostats are arranged in an upper and lower mirror image. The two thermostats each include an insulating component and a connecting component arranged on the insulating component, and the connecting component includes an upper spring strip 2, a lower spring strip 3, a vertical insulating column 31 and a fixed contact piece 4. The left end of the fixed contact piece 4 and the left end of the upper spring strip 2 are separated and fixed on the insulating component, and the right end of the upper spring strip 2 extends to the lower right to form a bent portion and is fixed to the top of the vertical insulating column 31 with the right end of the lower spring strip 3. A moving contact 5 is provided at the bottom of the left end of the lower spring strip 3, and a static contact 6 is provided upward at the position of the fixed contact piece 4 corresponding vertically to the moving contact 5; the bimetallic strip 1 is provided at the bottom of the insulating component, the left end of the bimetallic strip 1 is fixed to the bottom of the insulating component, and the right end of the bimetallic strip 1 is fixed to the bottom of the vertical insulating column 31; A pressure plate 7 is provided at the top of the insulating component, and the left end of the pressure plate 7 is fixed on the insulating component; a pressure regulating device is provided in the middle of the pressure plate 7, and the pressure regulating device includes a threaded knob 8 and a limit lever 9 arranged on the pressure plate 7, a limit ring 10 is provided on the outer side of the threaded knob 8, the limit ring 10 is sleeved on the threaded knob 8, and a limit convex piece 11 matched with the limit lever 9 is extended outwardly, and a pressure rod 12 in contact with the upper spring sheet 2 is provided below the threaded knob 8, and the static contact 6 and the moving contact 5 are contacted with each other through the pressure rod 12, so that a closed circuit is formed between the upper spring sheet 2 and the fixed contact sheet 4; an external wiring port 13 is also provided on the insulating component between the fixed contact sheet 4 and the bimetallic strip 1.

[0019] More specifically, the vertical insulating column 31 is made of ceramic insulating material.

[0020] like Figure 2As shown, when testing the life of the thermostat, the upper thermostat of the new thermostat of this embodiment is connected to the heating device, and the lower thermostat is connected to the blowing device. The upper thermostat is in a connected state by setting in advance, and the heating device is started in the connected state. It is worth mentioning that the heating device and the blowing device are both used to heat or cool the upper thermostat, and do not directly affect the ambient temperature of the lower thermostat. The staff can set it specifically according to the environment. After the heating device is started, the upper thermostat is heated until the upper thermostat bends upward, so that the vertical insulating column 31 pushes upward so that the moving contact 5 is no longer in contact with the static contact 6, and the upper thermostat reaches the disconnected state. At this time, the heating device is turned off. Since the same bimetallic strip 1 is shared, the lower thermostat is under the action of the bimetallic strip 1. When the lower spring 3 moves upward, the moving contact 5 is in contact with the static contact 6, and the lower thermostat is connected, and the blowing device starts to work. The blowing device blows air to cool the upper thermostat until the bimetallic strip 1 is reset to the upper thermostat to reach the connected state again. At this time, the lower thermostat is disconnected, the blowing device stops working, and the heating device starts working again.

[0021] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The functional and structural principles of the present invention can be modified arbitrarily without departing from the principles shown above.

Claims

1. A new type of thermostat, characterized by: It comprises two temperature controllers which share the same bimetallic strip (1), and the two temperature controllers are arranged in an upper and lower mirror image; The two temperature controllers each comprise an insulating component and a connecting component arranged on the insulating component, wherein the connecting component comprises an upper spring sheet (2), a lower spring sheet (3), a vertical insulating column (31) and a fixed contact sheet (4), wherein the left end of the fixed contact sheet (4) and the left end of the upper spring sheet (2) are separately fixed on the insulating component, the right end of the upper spring sheet (2) extends downward to the right to form a bent portion and is fixed to the top of the vertical insulating column (31) with the right end of the lower spring sheet (3), a moving contact (5) is provided at the bottom of the left end of the lower spring sheet (3), and a stationary contact (6) is provided upward at a position vertically corresponding to the moving contact (5) of the fixed contact sheet (4); the bimetallic strip (1) is provided at the bottom of the insulating component, the left end of the bimetallic strip (1) is fixed to the bottom of the insulating component, and the right end of the bimetallic strip (1) is fixed to the bottom of the vertical insulating column (31); the insulating component A pressure plate (7) is provided at the top of the component, and the left end of the pressure plate (7) is fixed on the insulating component; a pressure regulating device is provided in the middle of the pressure plate (7), and the pressure regulating device includes a threaded knob (8) and a limit lever (9) arranged on the pressure plate (7); a limit ring (10) is provided on the outer side of the threaded knob (8), and the limit ring (10) is sleeved on the threaded knob (8) and extends outward to be provided with a limit convex piece (11) matched with the limit lever (9); a pressure rod (12) in contact with the upper spring sheet (2) is provided below the threaded knob (8), and the static contact (6) and the moving contact (5) are contacted with each other through the pressure rod (12), so that a closed circuit is formed between the upper spring sheet (2) and the fixed contact sheet (4); an external wiring port (13) is also provided on the insulating component between the fixed contact sheet (4) and the bimetallic sheet (1).

2. A novel thermostat according to claim 1, characterized in that: The vertical insulating column (31) is made of ceramic insulating material.

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