JPH0330892Y2 - - Google Patents

Description

[Detailed explanation of the idea] TECHNICAL FIELD The present invention relates to a temperature regulating device.

In devices such as thermostats that use automatic temperature control devices, such as electric kotatsus, electrical contacts are turned on and off as the temperature of the bimetal increases, thereby controlling the temperature. However, when using this type of equipment, in order to quickly warm up the temperature, the temperature control knob is generally set to "strong" first, and then readjusted by lowering the knob once the temperature reaches a certain steady state. It is. And vice versa,
If the temperature is set to a predetermined level from the beginning, it takes a long time to reach a steady state, which causes inconveniences such as making people who want to warm themselves feel cold. In short, there was a problem in that the temperature was slow to rise until it reached a steady state.

The present invention solves these drawbacks of the conventional technology, and allows a rapid temperature rise in the initial stage with a single temperature adjustment setting, and a temperature control that allows normal temperature adjustment after reaching a steady state. The purpose is to provide a regulating device.

The present invention will be specifically explained. FIG. 1 is a sectional view of an apparatus according to an embodiment, FIG. 2 is an explanatory diagram of the principle of the present invention, and FIGS. 3 to 5 are sectional views each showing a heat-delay type heat-sensitive displacement member.

A fixed contact 3 is attached to an insulating pedestal 2 inside the case 1, and a corresponding movable contact 4 is attached to the pedestal 2 via a movable contact holding plate 5 and a bimetal 6. Connection terminals 7 and 8 are provided to be connected to the fixed contact 3 and the bimetal 6, respectively. The movable contact 4 is in a switch state in which it is biased toward the fixed contact 3 by two connected spring bodies, that is, the first spring body 9 and the second spring body 10, or in a switch state in which the movable contact 4 is in contact with the fixed contact 3, or in a switch state in which the movable contact 4 is in contact with the fixed contact 3 by two connected spring bodies, that is, the first spring body 9 and the second spring body 10. The holding plate 5 biases the stopper 13 toward the stopper 13 to switch to a switch-off state in which the stopper 13 is in contact with the stopper 13 to form a switch portion. The biasing force of the spring body 9 is reversed by bending the bimetal 6. That is, in the drawings of FIGS. 1 and 2, when the bimetal 6 curves upward due to a rise in temperature, the biasing direction of the spring body 9 is reversed at a certain point, and the movable contact 4 moves from the fixed contact 3 to the stopper 13 side. Dislocate. If the temperature drops, the opposite will occur.

The second spring body 10 is a heat-delay type heat-sensitive displacement member 2
0, and is displaced by the pushing movement of the heat-sensitive displacement member 20. This heat-sensitive displacement member 20 is pushed by the temperature control knob 11. In the case of the embodiment, the heat-sensitive displacement member 20 is attached to the pedestal 2 with a spring plate 12. Further, the temperature control knob 11 is attached to the case 1 so that it can be operated from the outside.

The heat-delay type sensitive displacement member 20 includes a heat-insulating container 21 and a heat-sensitive displacement element 22 held inside the heat-insulating container 21.
and a projecting piece 23 that extracts the displacement of the element 22 and transmits it to the second spring body 10, that is, pushes the second spring body 10. The heat-sensitive displacement member 2
0 is a plate-shaped bimetal 22a as shown in FIG.
as shown in FIG. 4, a shape memory alloy 22b formed into a spring shape, as shown in FIG. 5, and a flexible insulating container 2 as shown in FIG.
Bimetal 22a or shape memory alloy 22 in 1a
It is possible to construct a structure in which one end of the fixing plate 24 is fixed on the fixing plate 24 by sandwiching the b in between. Since the inside of this heat-sensitive displacement member 20 is isolated from a certain constant external atmosphere by the heat-insulating container 21, it is in a state in which it follows changes in external temperature with a time delay. For example, if the external temperature
This means that even though the temperature has reached 100℃, the temperature inside is still 60℃. Therefore, the thermal displacement element 22 also displaces with a time delay in response to a change in external temperature.

The principle of temperature control by the device of the present invention will be explained using FIG. To explain this using an electric hotatsu as an example, assume that you have now turned on the electric hotatsu and set the temperature control knob 11 to "medium". In this case, the heat-sensitive displacement member 20 is pushed by the pushing piece 11a of the temperature control knob 11 to the position shown by the solid line,
The second spring body 10 is pushed by the protruding piece 23 of the member 20 to the position shown by the solid line, and the first spring body 9 is further displaced by the second spring body 10 to the position shown by the solid line. In this case, the heat-sensitive displacement member 20
The temperature of the thermal displacement element 22 is still low, and the amount of protrusion is large as shown by the solid line. and spring body 9,1
When 0 is in the position shown by the solid line, a stronger biasing force presses the movable piece 4 against the fixed piece 3 than when it is in the position shown by the imaginary line (described later), and therefore a stronger force is applied to the retaining plate 5. If it does not act, it will not be reversed to the stopper 13 side. This means that the power switch cannot be turned off unless the bimetal 6 is curved that much (curved upwards in the drawing), and in the initial state where the temperature of the entire atmosphere has not risen sufficiently uniformly, the temperature can be strongly increased. Therefore, it is preferable. That is, even if the temperature near the heating section rises, the temperature inside the heat-sensitive displacement member 20 does not rise immediately, so the spring bodies 9 and 1
Turning on and off is performed at the position where 0 is indicated by the solid line. On the other hand, as time passes, the temperature inside the heat-sensitive displacement member 20 gradually increases and approaches the external temperature, and accordingly the heat-sensitive displacement element 22 is displaced from the state shown by the solid line to the state shown by the imaginary line. Then, the amount of protrusion of the protruding piece 23 decreases, so that the first spring body 9 and the second
The spring body 9 is at the position indicated by the imaginary line, and will be turned on and off at this position thereafter. In this position, the movable contact 4 switches from the fixed contact 3 to the stopper 13 side with less curvature of the bimetal 6 (upward curvature in the drawing) than in the position indicated by the solid line. In short, in order to make the initial temperature rise sufficiently quickly after turning on the kotatsu and shorten the time it takes for the entire inside of the kotatsu to become sufficiently warm, you can set the electric gotatsu's control knob to "medium". Initially, this creates a state similar to setting the knob to "strong".

Of course, the temperature control device of the present invention is not only applicable to the above-mentioned electric gotatsu, but also at the time of temperature control (until it reaches a steady state).
This can be applied to all equipment that requires a smooth rise in temperature. Furthermore, in the present invention, the relationship between the "initial state" and the "steady state" can be reversed by reversing the orientation of the heat-sensitive displacement element 22 in the above embodiment, depending on the nature of the device to which it is applied. You can also do it. The present invention includes such a case within its technical scope.

The present invention has the above-mentioned configuration, and the positional displacement caused by the temperature control knob is transmitted to the spring body side via the heat-delay type heat-sensitive displacement member, so that the displacement of the heat-sensitive displacement member delayed by the ambient temperature is transferred to the movable contact. In temperature control, it is possible to change the biasing force between the "initial state" and "steady state", and as a result, the temperature can be rapidly raised to shift to the steady state. It has been possible to eliminate the drawback of conventional devices that occurred by only making adjustments, that is, the temperature could not be well controlled until a steady state was reached.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an apparatus according to an embodiment, FIG. 2 is an explanatory diagram of the principle of the present invention, and FIGS. 3 to 5 are sectional views each showing a heat-delay type heat-sensitive displacement member. DESCRIPTION OF SYMBOLS 1... Case, 3... Fixed contact, 4... Movable contact, 6... Bimetal, 11... Temperature control knob, 20... Thermal displacement member, 21... Insulating container, 22... Temperature sensitive displacement element , 23... protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) Due to the curvature of the bimetal, the biasing direction of the spring body that biases the movable contact is reversed against the biasing force of the spring body, whereby the movable contact It has a switch part that can be switched between an on state in contact with a fixed contact and an off state in which it is spaced apart from a fixed contact, and the biasing force of a spring body that biases the movable contact can be changed by operating a temperature control knob. A temperature control device that adjusts the restoring force by increasing or decreasing the restoring force caused by positional displacement of a spring body, and is a heat-delay type heat-sensitive displacement member that changes the amount of displacement caused by the operation of a temperature control knob due to temperature changes. A temperature adjusting device characterized in that the temperature is transmitted to the spring body side via. (2) The sensitive displacement member has a heat-sensitive displacement element held in an insulating container that follows ambient temperature changes with a delay, and a protrusion that transmits the displacement to the spring body. The entire heat-sensitive displacement member is pushed by the operation, and the projecting piece of the heat-sensitive displacement element transmits the total amount of displacement of the push amount by the adjustment knob and the displacement amount by its own heat-sensitive displacement element to the spring body side. 2. The temperature control device according to item 1.