JPS5941018A - Heat radiation controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a heat radiator fi+1 for controlling the temperature of a device mounted on a flying object such as an artificial satellite and placed in free space.
1 'r: 'it.

[11 arc points between conventional technology and T] Temperature control fa1 of equipment in a single ship in the air, especially in outer space, can only dissipate heat by applying radiation heat transfer. Isosae's temperature 11 tlJ n wholesale is 11 times! - Yes. The inventor of the present invention has developed a heat radiation suppressor capable of controlling the temperature. This heat dissipation process will be explained using FIG. 1.

The board (2) on which the equipment (1) to be temperature controlled is mounted is connected to the bolt (
4) and the nut (5), and the heat sink (6) placed below.
) are fixed adiabatically at intervals. (7) is
Expandable i placed between the substrate (2) and the heat sink (6)
An i@ container, this container (7) has a bellows (8) whose upper end is fixed to the back surface of the substrate (2), and a bellows (8).
and a contact plate (9) which closes the lower end of the heat dissipation plate (6) and is provided in contact with and away from the heat sink (6). Further, a working fluid 0I is sealed in this container (7), and a working fluid f
The container (7) is designed to expand and contract due to the vapor pressure of 1 liters. Note that in the figure, OD is a reflection plate attached to the heat sink (6). Also, in the figure, the equipment to be temperature controlled (
1) is constructed by attaching the device main body ■ to a panel Qυ.

Next, the operation of the heat radiation controller having the above configuration will be explained.

The heat generated from the device (1) that becomes the heating element for temperature control is transmitted to the substrate (2), which further heats the expandable container (10,000 yen working fluid 0I. The position of the contact plate (9) of the opposing container (71) is bellows +81
It is determined by the condition that the spring force of and the vapor pressure of the working fluid ill in the container (7) are in equilibrium.

When the working fluid (10) is heated to a predetermined temperature or higher and its vapor pressure rises, the bellows (8) expands and the container 171 expands.
The contact plate (9) is pushed down and comes into contact with the heat sink (6),
At this contact surface, heat is transferred by conduction, and the heat sink (61
One device (1) is cooled by dissipating heat by radiant heat transfer.

When the device tg is cooled down to a predetermined temperature or lower in this way, the vapor pressure of the working fluid (Il'j) in the container (1) increases, and the spring force of the bellows (11) causes the container (1 ) contracts and the contact plate (9) separates from the heat sink (61).
t, heat radiation stops.

Thereafter, the container (the contact plate (9) of p and the heat sink 16) repeatedly comes into contact with and separates from the set temperature. By repeating contact and separation between the contact plate (9) and the heat sink (6), the device 0) can be maintained at a predetermined temperature.

By the way, recently there has been the following request regarding the flight books of artificial satellites and the like. In other words, (1) Highly accurate temperature 14if of a computer, etc.
I want to install all the equipment that needs to be controlled.

(2) For example, you would like to mount test equipment on a tower and conduct tests at multiple temperatures.

Conventional heat radiation controllers have not been able to meet these demands for the following reasons. That is, the temperature change of the working fluid in the expandable container could not follow a sudden change in the amount of heat generated by the equipment, and only a slow temperature change was possible. This is because the working fluid within the telescoping vessel requires a relatively large heat input cooling capacity.

Furthermore, even with the above-described heat radiation controller, if the temperature of the working fluid in the expandable container can be forcibly changed, it will be possible to perform temperature control at multiple points and highly accurate temperature control. However, since the working fluid and the equipment are connected through a relatively large thermal conductance, it has been difficult to change the temperature of the working fluid independently of the equipment temperature.

[Purpose of the invention]

An object of the present invention is to improve the heat radiation control 6 described above and provide a heat radiation controller that can control the temperature i[ttl # with high precision and accuracy through active control from the outside.

[Summary of the invention]

The present invention includes a board on which temperature control equipment is mounted on one side, and a bellows located on the other side of the board and fixed at one end through a heat insulating groove with a space between the board and the board. a retractable container formed of retractable members such as, a connection communicating with the retractable container; an lf4 pipe, a control 111 container connected to the retractable container via the communication pipe; The working fluid sealed in the control vessel and the control vessel are heated.

A heat radiation controller is configured by comprising a heat source composed of a heater or the like for cooling, a temperature sensor that detects the temperature of the substrate, and a control circuit that controls the heat source based on a detection signal from the temperature sensor, The temperature sensor detects the wetness IW of the board, and based on this detection signal, the heat source is turned on and off according to the conditions set in the control circuit.
The temperature of the working fluid in the control container is changed by FF, etc., and the contact j-H force is changed to radiate heat, and Example 1 of II is also carried out.

〔Effect of the invention〕

If the heat dissipation flrlJ cape device according to the present invention is used, the following effects will be achieved. In other words, the operation of the control vessel?
#.

By changing the body temperature from 1 to 100% according to the temperature of the machine, it is possible to perform temperature control with high accuracy.Furthermore, the control circuit is equipped with a vA degree control clause ('t- Temperature control of multiple teaching points can be performed by setting the total temperature to 6.

[Embodiments of the invention] An embodiment of the present invention will be described with reference to FIG.

1i'1], the same reference numerals are used for the same parts as in Fig. 1, and C
Detailed explanation will be omitted.

In the adult chicken 11i1j groaning vessel, the 11h fluid 11 value is sealed, and the 1lii container (to the sword, zl'k'
#Fli'J l'Katayo' to make +11 by Qno
rl's 12:9 is provided, and a working fluid 111 (same as I) is sealed in a telescopic container (7) inside this control container. (7), working fluid (1
(In the case of 9, when the contact plate (9) is in contact with the heat dissipation plate (6), part of the space inside the 11 volume Zh fl'! is in the gas phase and the remaining space is in the liquid phase. A heat source 04 for heating the operating driftwood 116 is placed around the IIIJ control container C.
1 is composed of a heater (24a) and a power source (24b), and is further covered with a heat insulating material (g). bellows 18
) il: The contact plate (9) and the heat dissipation plate (6) are used so that they do not come into contact with each other at the vapor pressure of the lower limit of the set temperature of the device (]). When the temperature sensor (A) made of a thermistor, %J, bimetal, etc. indicates that the device (1) has reached a temperature close to the upper limit of the set temperature, this detection No. 13 turns on the power supply (2413'l). The control circuit e1, which controls ON and OFF', is driven, and the working fluid 11 in the control vessel C3 is heated by the heater (24a) via the power source (24b), and the The temperature is set to be sufficiently higher than the set temperature in (1).This allows the gas phase working fluid to be formed in the control vessel ((■), and 4 is the contact plate (9).
) and the heat dissipation plate (6) are sufficiently high to provide the vapor pressure necessary to bring them into contact with the upper blade. This allows the contact plate (9) and the heat sink (
6) come into contact with sufficiently high pressure, and the heat from the rock parrot (1) can be quickly transferred to the heat sink plate (6) and radiated.

When the temperature sensor Ce detects that the temperature of the device (1) has fallen below a predetermined temperature, the control circuit (5) turns off the power supply (24b) and turns off the heater (24b).
Stop heating the working fluid 06 from a) and turn the working fluid 11
Lower the temperature. When the temperature of the working fluid n[6 decreases, the vapor pressure of the working fluid F+(6) decreases, the contact plate (9) and the heat sink (6) separate, and the amount of heat radiated from the heat sink (6) decreases. (1) The temperature drop can be prevented.

By repeating the above operations, the device can be maintained at a predetermined temperature with high precision.

In addition, the control circuit (27) calculates the rate of change in temperature detected by the temperature sensor (2), and controls ON/OFF of the heater (24a) based on the calculated value. If the circuit (27) is composed of a microcomputer or the like, the heat dissipation plate (6) and the contact plate (9) will be in contact with each other.

Just by separating them, it is possible to change the contact pressure between the heat sink (6) and the contact plate (9), making it possible to control the temperature with even higher precision.

In addition, the predetermined temperature of the device (1) can be changed by setting the moxibustion condition in the control 111 circuit (2η). In order to increase the cooling rate of 23+, it is also possible to install a heat-responsive material around the control container 1, or to install a good heat conductive part such as a copper plate on the container C31. good.

Furthermore, a protruding EIS 'ff may be provided inside the expandable container ('L) to improve the transfer rate of heat generated by the equipment (9).
Alternatively, a spring may be provided in parallel to the bellows (8) of the expandable container (7) so that the set temperature of the device (1) can be set.

[Brief explanation of the drawing]

Figures 1 and 1 are cross-sectional views showing a conventional heat radiation controller, and Figure 2 is a cross-sectional view showing a heat radiation controller according to the present invention. (1) Equipment, (2) Board, (3) Heat insulating spacer 5 (8) Bellows (expandable>jai, -t), +91
Contact plate, (1+1), (il work 1jj
l Fluid, (Armor communication pipe, +23 Control vessel, (), 11 Heat source, (24a) Heater, (241)) - Power supply, !1 Sheet/Temperature sensor, C27) Control circuit. (7317) Representative Patent Attorney Rules Suitable Yu (Ri1)
or 1 person) No. 1! figure

Claims (1)

[Scope of Claims] (1) A substrate on which a device to be temperature controlled is mounted on one side, and the device is located on the other side of this substrate and fixed to the substrate through a heat insulating spacer with a gold film in between. a heat sink, located between the substrate and the heat sink, and in contact with the heat sink;
A contact plate for separating and a retractable container formed of a retractable member having one end fixed to the substrate, a communication pipe communicating with the retractable container, and a control container communicating with the retractable container via this communication Wk; A working fluid sealed in the expandable container and the control container, a heat source for heating and cooling the control container, a temperature sensor for detecting the temperature of the substrate, and controlling the heat source based on a detection signal from the temperature sensor. A heat dissipation controller characterized by being completely equipped with a f wholesale+l1tl in circuit. (2) The heat radiation controller according to the scope of Patent No. 1□n, item 1, characterized in that the heat source is constituted by a heater. (3) Is the heat source heated with a heater or heat-flexible wood? 1. A heat radiation controller according to claim 1, characterized in that the heat radiation controller is configured to perform the following functions. +4) The heat radiation controller according to claim 1, characterized in that the periphery of the tIi control container is covered with a heat insulating material. (5) The heat radiation controller according to claim 1, characterized in that a part of the control container is provided with a good heat conductive member.