JPS5963492A - Heat pipe - Google Patents

Abstract

PURPOSE:To permit to stop the operation of the heat pipe perfectly without any damage by putting a solenoid valve OFF by a method wherein the solenoid valve is provided between an evaporating part and a condensing part and a vapor flow bypass is provided in parallel to the solenoid valve. CONSTITUTION:In order to put the thermosyphon type heat pipe, having no wick on the inner surface of the pipe, into an operating condition, the conduction of an exciting coil 3 is stopped, then, a valve seat 1 is brought into an open condition, vapor in the evaporating part A moves to the condensing part B through the valve seat 1 and the vapor flow bypass C and is condensed there while the condensed liquid is recirculated to the evaporating part A through the valve seat 1 due to the gravity thereof. When the exciting coil 4 is conducted, the valve seat 1 is closed, the vapor of the evaporator A enters into the condensing part B through the bypass C and thereby precluding the recirculation of the condensed liquid. Accordingly, the working liquid of the evaporating part A enters into the condensing part B through the bypass C and the operation is stopped perfectly. At this time, the heat pipe will never be broken by the pressure of the vapor.

Description

[Detailed description of the invention] (a) Industrial application field (f light is the condensing part η) and the evaporating part
11 of the so-called Il-ifine type, which is refluxed by
-Regarding dopaibu.

(Conventional technique) This volatilization heat vibrator's i!i, t+ operation is stopped 1- [To do this, conventionally, the evaporation part ηf and the static contraction 1ηl (+@1
'Jr L'13 (11 and valve body; 21 and valve body 1
21 is the anti-valve part (11 direction -), a solenoid valve ( 1M1 Lab with V5 interposed =
1 Close the valve seat (1) to stop the flow of the working fluid and stop the operation of the heat pipe. However, due to the pressure increase in the evaporator section IAI 12
) was pushed open and the operation could not be completely stopped.

Furthermore, if the valve element (i+) is provided on the evaporator section tAI side of the valve seat, there is a problem that the heat pipe is damaged due to a pressure increase in the evaporator section v<f.

(c) Purpose of the Invention In view of the above problems, the present invention aims to provide a heat pipe whose operation can be completely stopped. Through this bypass, the working fluid on the evaporator side flows into the condensing section, and the working fluid on the #SF condensing section does not flow back to the evaporating section, so the operation of the ni-heat pipe can be completely stopped. .

5) Embodiment of the Invention An embodiment of the present invention will be explained in accordance with FIG. tA
+ and a condensing part 6) which radiates heat to the outside A solenoid valve (2) is provided, which is comprised of an excitation coil (4) that energizes the body (3) and the valve body (2) toward the valve seat (1) to close the valve seat (1) when energized.

C) The working liquid vapor flows from the evaporator nfstAJ to the condenser S part IBI, and from the condenser part IBI to the evaporator part (A+-\To prevent the working liquid from refluxing, the gas phase part of the evaporator part IAI and the gas phase part of the condenser part IBI are separated. This is a communicating steam bypass path.

In the 1-L configuration, in order to put the heat pipe into an operating state, the energization to the excitation coil 131 is stopped.

Then, as shown in FIG. 2(a), the valve seat (1) becomes open and the steam in the evaporator section IAI flows as shown by the solid line arrow.
) and the bypass passage +01, the condensate reaches the condensing section IBI, where it is condensed, and the condensed liquid returns to the evaporating section IAI through the valve seat (1), where it is evaporated.

Next, to stop the operation of the heat pipe, look through the excitation coil (41).Then, as shown in Fig. 2 1b+, the valve seat (
1) is closed, the vapor in the evaporator section IAI mainly flows into the condensing section IBI through the bypass path IQ, while 1. The original flow of am liquid is absorbed into the mouth 112, and a liquid pool is formed in the body IBI, and the valve seat (1) is closed by the liquid pressure. Then, all the working fluid in the evaporation section (C, evaporation section) passes through the bypass path te+ to the condensation section lB.
112, and the operation is completely stopped.

In the refusal operation, since the condensing part FBI (@FRIIA) and the condensing part FBI communicate with each other through the bypass path 1cJl2, the entire interior of the heat vibrator is maintained at a substantially equal pressure state, and the valve seat ([1] is closed due to steam pressure). Since the force to press the valve body (21 in the same direction) is zero or almost zero, one of the excitation coils (4)
The excitation force may be weak, and the excitation coil (4) can be made smaller and power consumption can be reduced.

Next, another embodiment of the present invention will be described with reference to FIG.

Note that the same parts as in FIG. 2 are designated by the same reference numerals and explanations will be omitted. The difference from the second embodiment is that a magnetic ball valve 1211 which is not energized by a spring body (3) is used as the solenoid valve +V), and when the excitation coil (4) is energized, the ball valve is closed as shown in Figure 1al. (2) 1 is attracted to the valve seat il+ and closes it, and when the power is not energized, the ball valve 1z11 separates from the valve seat (1) due to gravity and falls into the receiver part (5), opening the valve seat (1).
The heat pipe is activated and deactivated in the same manner as in the above embodiment. In this embodiment, a spring body is not required and the structure of the solenoid valve can be simplified.

It should be noted that the present invention is not limited to the above two examples.
Valve body 12+ +211'z-valve FL, r< + I
It may be provided on the 716'jf section IAI side with respect to I. In this case, since hydraulic pressure is applied to the valve body 121c411, the magnetic force by the excitation coil (4) is It must be a big hole.

(f) Effects of the Invention According to the present invention configured as described above, the OF of the η” magnetic valve is
It is possible to completely stop the operation of the heat pipe by F, and it is also possible to prevent the heat pipe from being damaged by the magnetic flux FL at the time of OFF.Also, the steam bypass path prevents the evaporator and the heat pipe from being damaged. Since the pressure is equalized, the excitation (ε force) of the excitation coil can be reduced by 5, etc., and other effects are great.

[Brief explanation of drawings]

FIG. 1 shows a schematic configuration of a conventional example, FIG. 3 shows a different operating state of an embodiment of the present invention, and FIG. 3 shows a schematic configuration of the present invention. FIG. 3 is a cross-sectional view taken along the T'f section showing various operating states of the embodiment. IAI...evaporation section, IB...condensation section, ICI...
...Bypass road.

Claims (1)

[Claims] (1) M-subsection steamer section - \ Working liquid is refluxed by gravity (2 t, r, between evaporation section and Q sub-section C
: A heat pipe with a special advantage of having a solenoid valve and a steam flow bypass path in parallel with the four to nine solenoid valves.