A resistance-adjustable temperature controller testing device

Abstract

The utility model discloses a kind of resistance adjustable temperature controller testing devices, including terminal post, ohmmeter, temperature controller and adjustable resistor, terminal post is connected with alternating current power supply, ohmmeter and temperature controller respectively, one end of adjustable resistor is connected with the first resistance contact point of ohmmeter and temperature controller respectively, the other end of adjustable resistor is connected with the fixed contact of change-over switch, two moving contacts of change-over switch are connected with the second resistance contact point of ohmmeter and the second resistance contact point of temperature controller respectively.The utility model has the characteristics of simple structure, convenient to carry, low cost, can efficiently determine the action condition of temperature controller under different resistance values.

Description

Technical Field

[0001] This utility model relates to a temperature controller testing device, and more particularly to a temperature controller testing device with adjustable resistance. Background Technology

[0002] A thermostat, also known as a temperature switch or temperature controller, is an automatic control component that automatically triggers physical deformation or electronic signals based on changes in ambient temperature, thereby controlling the on / off state of circuits or regulating the operation of equipment. A thermostat can sample the ambient temperature in real time, and when the temperature exceeds or falls below a set value, the thermostat activates to control other components.

[0003] Currently, temperature probes are typically used to detect ambient temperature in thermostats. However, this method cannot test or regulate the thermostat's operation under normal, high, or low temperature conditions. During the production process, it is necessary to test the resistance and continuity of the internal circuitry of the thermostat. Current testing methods generally involve personnel manually testing the thermostat using a multimeter, which is inefficient and poses a risk of electric shock to operators.

[0004] Existing Chinese patent CN218297438U discloses a temperature controller testing machine. The positioning base holds the temperature controller, and a movable block is positioned above the positioning base. A movable component allows the movable block to move closer to or away from the positioning base. The movable block is equipped with several probe rods. These probe rods are electrically connected to a resistance meter and a continuity meter, and can abut against the temperature controller's connection terminals. The continuity meter detects the continuity performance of the temperature controller's internal circuitry and provides feedback to a central control device. The resistance meter detects the resistance performance of the temperature controller's internal circuitry and provides feedback to the central control device. This invention allows operators to test the resistance and continuity performance of the temperature controller simply by placing it on the positioning base and using the central control device. This eliminates the need for repeated manual connection and disconnection of the temperature controller's terminals, making the testing fast, efficient, and reducing the risk of electric shock. However, the aforementioned testing machine has a complex structure, large size, is not easily portable, and has high costs. Summary of the Invention

[0005] The purpose of this invention is to provide a temperature controller testing device with adjustable resistance. This invention features a simple structure, portability, low cost, and the ability to efficiently measure the operation of a temperature controller under different resistance values.

[0006] The technical solution of this utility model is as follows: A test device for an adjustable temperature controller includes terminals, a resistance meter, a temperature controller, and an adjustable resistor. The terminals are connected to an AC power supply, the resistance meter, and the temperature controller, respectively. One end of the adjustable resistor is connected to the first resistance contact of the resistance meter and the temperature controller, respectively. The other end of the adjustable resistor is connected to the fixed contact of a changeover switch. The two moving contacts of the changeover switch are connected to the second resistance contact of the resistance meter and the second resistance contact of the temperature controller, respectively.

[0007] In the aforementioned adjustable resistance temperature controller testing device, the terminals include a first terminal and a second terminal. The first terminal is connected to the first power contacts of the temperature controller and the resistance meter, respectively. The second terminal is connected to the second power contacts of the temperature controller and the resistance meter in sequence via a power button and a power indicator light.

[0008] In the aforementioned adjustable temperature controller testing device, the adjustable resistor includes at least one adjustable resistor, and two or more adjustable resistors are connected in series.

[0009] In the aforementioned adjustable resistance temperature controller testing device, the temperature controller is provided with a first output contact and a second output contact, and a temperature controller operation indicator light is connected between the first output contact and the second output contact.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention uses an adjustable resistor instead of a temperature probe and a switch to switch between a resistance circuit and a test circuit. In the resistance circuit, different resistance values ​​can be continuously adjusted. After each resistance value is determined, the circuit is switched to the test circuit to check the operation of the temperature controller.

[0012] This utility model has a simple overall structure, can be integrated into one unit, is easy to carry, and is inexpensive. When testing the temperature controller's operation, it is not necessary to disconnect the resistor wire connected to the resistor; simply switch the switch and connect the AC power supply. Operation is simple, and there is no possibility of DC short circuit or grounding, thus improving the safety and reliability of the temperature controller's operation test. Attached Figure Description

[0013] Figure 1 This is a circuit connection diagram of this utility model.

[0014] The markings in the attached diagram are as follows: 1. Terminal; 11. First terminal; 12. Second terminal; 2. Rheometer; 3. Thermostat; 4. Adjustable resistor; 5. Changeover switch; 6. Power button; 7. Power indicator light; 8. Thermostat operation indicator light. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a hinged connection, a rotating connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Example:

[0018] like Figure 1 As shown, a test device for an adjustable temperature controller includes a terminal block 1, a ohmmeter 2, a temperature controller 3, and an adjustable resistor. The terminal block 1 is connected to an AC power supply, the ohmmeter 2, and the temperature controller 3, respectively. Specifically, the terminal block 1 includes a first terminal block 11 and a second terminal block 12. The first terminal block 11 is connected to the first power contacts of the temperature controller 3 and the ohmmeter 2, respectively. The second terminal block 12 is connected to the second power contacts of the temperature controller 3 and the ohmmeter 2, respectively, via a power button 6 and a power indicator light 7.

[0019] Power indicator 7 is an AC power indicator. When AC power is connected to terminal 1, the AC power indicator lights up to provide indication. Power button 6 can be a power button with a retention function.

[0020] One end of the adjustable resistor is connected to the first resistance contact of the ohmmeter 2 and the temperature controller 3 respectively, and the other end of the adjustable resistor is connected to the fixed contact of the changeover switch 5. The two moving contacts of the changeover switch 5 are connected to the second resistance contact of the ohmmeter 2 and the second resistance contact of the temperature controller 3 respectively via wires.

[0021] The adjustable resistor includes at least one adjustable resistor 4, and two or more adjustable resistors 4 are connected in series. The adjustable resistors 4 can be appropriately increased or decreased according to the actual situation to control the resistance adjustment range of the adjustable resistor.

[0022] The thermostat 3 is provided with a first output contact and a second output contact, and a thermostat operation indicator light 8 is connected between the first output contact and the second output contact. When the thermostat 3 is activated, the thermostat operation indicator light 8 lights up to indicate the activation, making the indication more intuitive.

[0023] The various electrical components of this utility model, such as terminal 1, ohmmeter 2, temperature controller 3, adjustable resistor, power indicator 7, etc., can be integrated into one unit, with a simple overall structure, easy to carry, and convenient to operate.

[0024] In this utility model, a temperature measuring probe of the temperature controller 3 is replaced by an adjustable resistor. According to the temperature-resistance relationship table corresponding to the temperature controller, it can be known that each resistance value corresponds to a unique temperature value. In the resistance circuit, within the test range of the adjustable resistor, the resistance value is continuously adjusted through the adjustable resistor, and the resistance values at different temperatures in the test temperature-resistance relationship table are tested. After determining the resistance value, the test circuit is switched through the change-over switch 5 to test the operation of the temperature controller 3.

[0025] Specifically, in the resistance circuit, the AC power supply is connected to the temperature controller 3 and the resistance meter 2 respectively through the terminal 1. The fixed contact of the change-over switch 5 is connected to the first resistance contact of the resistance meter 2 through the adjustable resistor, and the moving contact of the change-over switch 5 is connected to the second resistance contact of the resistance meter 2.

[0026] In the resistance circuit, according to the temperature detection requirement range of the temperature controller, the relationship between the temperature and the resistance of the temperature controller is consulted to obtain the corresponding resistance range. The adjustable resistor is adjusted to the corresponding resistance on the resistance circuit, and the resistance value at which the temperature controller operates is measured and determined through the resistance meter 2. And record this resistance value and the corresponding temperature value.

[0027] After determining the resistance value, it is switched to the test circuit by using the change-over switch. In the test circuit, the AC power supply is connected to the temperature controller 3 through the terminal 1. The fixed contact of the change-over switch 5 is connected to the first resistance contact of the temperature controller 3 through the adjustable resistor, and the moving contact of the change-over switch 5 is connected to the second resistance contact of the temperature controller 3 through. In this circuit, the operation of the temperature controller 3 is tested. If the temperature controller 3 operates at this resistance value and within the required temperature range, it indicates that the temperature controller is qualified, otherwise the temperature controller is unqualified. When testing the temperature controller 3, there is no need to remove the resistance wire. Only through the change-over switch and connect the AC power supply, there is no possibility of DC short circuit or grounding, which improves the safety and reliability of the test.

[0028] The above-mentioned temperature-resistance relationship table is publicly known data when each temperature controller leaves the factory. For example:

[0029] The temperature-resistance relationship table of the temperature controller with the model "KS-1C-T-N-N (X1)" is:

[0030]

[0031] The parts not detailed in this utility model are prior art, so they will not be specifically described here.

Claims

1. A resistance-adjustable temperature controller testing device, characterized in that: It includes a terminal block (1), a ohmmeter (2), a thermostat (3) and an adjustable resistor. The terminal block (1) is connected to the AC power supply, the ohmmeter (2) and the thermostat (3) respectively. One end of the adjustable resistor is connected to the first resistance contact of the ohmmeter (2) and the thermostat (3) respectively. The other end of the adjustable resistor is connected to the fixed contact of the changeover switch (5). The two moving contacts of the changeover switch (5) are connected to the second resistance contact of the ohmmeter (2) and the second resistance contact of the thermostat (3) respectively.

2. The adjustable resistance temperature controller testing device according to claim 1, characterized in that: The terminal block (1) includes a first terminal block (11) and a second terminal block (12). The first terminal block (11) is connected to the first power contacts of the thermostat (3) and the ohmmeter (2) respectively. The second terminal block (12) is connected to the second power contacts of the thermostat (3) and the ohmmeter (2) respectively via the power button (6) and the power indicator light (7).

3. The adjustable resistance temperature controller testing device according to claim 1, characterized in that: The adjustable resistor includes at least one adjustable resistor (4), and two or more adjustable resistors (4) are connected in series.

4. The adjustable resistance temperature controller testing device according to claim 1, characterized in that: The thermostat (3) is provided with a first output contact and a second output contact, and a thermostat operation indicator (8) is connected between the first output contact and the second output contact.

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