JPS58153131A - Method for sealing gas in temperature sensitive tube - Google Patents

Abstract

PURPOSE:To prevent the gas leakage permanently perfectly, by sealing Freon gas and the like in the temperature sensitive tube for a cooling device and the like, compressing the vicinity of a tip part, inserting silver solder and the like between the compressed part and the tip part, temporarily sealing the tip part, and melting the silver solder and the like by heating. CONSTITUTION:The tip part 14 of the temperature sensitive tube and the like 10 made of copper is compressed, and a first temporary sealing part 11 is formed. A sealing agent 13 such as the silver solder is inserted in a space 12 at the outside of the part 11. Thereafter, a tip part 14 is compressed and a second temporary sealing part 15 is formed. Then heat is applied from the outside so as to melt the sealing agent 13 and the sealing is performed perfectly. By this double sealing, the inside of the second sealing part of the tube 10 is perfectly coated by the sealing agent. The leakage due to the presence of oxide, dust, and the like can be perfectly eliminated in comparison with the case where only compression is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas-piercing method for a temperature-sensing tube used in a cooler or the like, which reliably seals and traps gas such as freon in the temperature-sensing tube.

Dan: Conventionally, as shown in Figure 1, the gas sealing method for this temperature-sensing tube is to perform an If image 2 of the area near the tip J of the temperature-sensing tube 1 using a tick (not shown), and then heat it externally. If the copper or other metal constituting the thermosensing tube is oxidized or is resistant to dust, please take the time to press the area around the tip. However, due to the oxide film or dust, the metals could not be joined together, so even if soldering was applied from the outside for reinforcement, gas leakage still occurred.

The present invention has been invented in view of the above points, and is a method for fixing nine carp.According to the present invention, after gas is applied to the temperature sensing cylinder, a sealing material such as a solder material is inserted into the temperature sensing cylinder, Furthermore, the thermosensor is temporarily attached to the nine-shudan temperature-sensing cylinder with a sealing material, and then the temperature-sensing cylinder is heated from the outside to melt the internal O sealing material, and the temperature-sensing cylinder is temporarily sealed with this molten sealing material. A gas sealing method for a thermosensor cylinder that completely seals the sealing part.

According to the present invention, a temperature-sensitive tube formed of a rope or the like is first evacuated and a gas such as Freon is filled inside, and the vicinity of the tip is crimped and sealed using an appropriate tool. Make the temporary joint part Iit shape.

Since a space is formed between the first temporary koji fixing plate and the tip, a suitable 0# fixing material such as a brazing material is inserted into this space.

After inserting the sealing material, the tip of the temperature-sensitive tube including the tip St is removed! I
The part near K is crimped using an appropriate tool to form a total of two temporary sealing parts, and the 11 original materials are inserted into the space between the first temporary sealing part and the second temporary sealing part. to be located.

In this state, the front R cavity is externally heated to melt the sealing material in the cavity and cover the second temporary sealing part from the inside.

When doing this, the second temporary sealing part is completely sealed with the internal sealing material. The sealing method of the present invention will be explained below with reference to an embodiment shown in Figs. 2 to 5.

A simple design made of steel! After pulling and adding a surplus of gas such as Freon, use a tool tube as appropriate near the tip as shown at 11, and crimp with about 20 # to form the first temporary sealing part, which was created by this. Insert the silver solder 11 into the space J2 at the tip. After doing this, the tip N14 of the temperature-sensitive cylinder is further pressed with an appropriate tool for about 10 minutes to flatten it,
A temporary sealing part IJ of #I2 is formed. Therefore, Ginkan 13 is the first
A space 12 between the temporary sealing part 11 and the second temporary sealing part 15
It is expressed as the form that exists within.

In this state, the temperature around this void is 16,600℃ to 700℃ outside.
Heat at a temperature of At this time, the silver solder IJ in the cavity is heated by the heat, and as shown in FIG. 5, the melted silver solder completes the second sealing ISJ 5t.

Next, referring to another embodiment, as shown in FIG.
Insert a chain bell 13 that is longer than this cavity into the hollow space 12 formed at the temporary sealing part 11 and the tip of 111, and then press the middle part of this space for about 3 seconds as shown in Figure 7. and sandwich am, and form a second temporary sealing part 16. Next, this space is heated from the outside at 600°C to 700°C to melt the silver wax. As shown in Figure 8, the static melting silver solder is applied to the first sealing part, the second sealing part, and even to the open end of the thermosensor cylinder. This is a part that can seal the first sealing part and the second sealing part.

In the above explanation, silver solder was used as the Ti blocking material, but the present invention is not limited to this, and phosphorous copper or resin-filled 9/9
・The sealing part 14 at the tip is immersed in a 01111 sealing material as appropriate for treatment, and the sealing part 14 is reinforced from the outside. The temperature-sensitive tube formed as described above reliably prevents gas from leaking from the tip sealing portion 14, and is sufficiently durable for long-term use.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory partial # side view showing the conventional sealing method, $2 is a longitudinal wk-view of a part of the nine thermosensitive strips with the temporary sealing part completely formed, and Fig. 3 44 is a similar longitudinal sectional view showing the state in which the sealing material is inserted into the tip cavity, FIG. 44 is a similar sectional view showing the state in which the second temporary sealing part is formed, and FIG. 6, 7, and 8 are similar cross-sectional views showing the circular shape mt of the sealing portion 4 of other embodiments! ! Similar OWr drawings showing 10... Temperature sensing cylinder, 11... First temporary sealing part, 11.
... Space, 13... Sealing material, J4... Sakiku, 3j
. 16...Second temporary sealing part. Applicant's agent Patent attorney Takehiko Suzue No. 1II Figure 3 0 1144 Figure 0 611! Figure 7]b Figure 80

Claims (1)

[Claims] After filling the thermosensitive cylinder with a gas such as Freon, a first temporary seal 11 is formed near the tip, and an O seal such as a lint-free material is placed in the space formed between the temporary seal and the tip. Insert a sealing material, and further insert a sealing material into this space to form a temporary sealing part of thread 2 at the tip of the groove or near the tip of the tip,
Next, the space part is heated from the outside to melt the sealing material, and the temporary sealing part is sealed with the molten sealing material.