JP2004271045A - Fluid extraction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid draining device improved in its recovering efficiency with respect to the fluid draining device recovering a refrigerant from a used refrigerator and the like. <P>SOLUTION: With respect to a rubber member 17 for sealing to prevent the leakage of the refrigerant from a bored pipe 18 in the fluid draining device 11 for recovering the refrigerant from a pipe 18 of the used refrigerator and the like, the reliability of the rubber member 17 can be secured by having an approximately disc-shaped contact part 17b kept into contact with the pipe 18, and a base part 17a, and repeating its expansion and contraction by applying the shape similar to beads of an abacus, and the pipe can be easily bored and hardly collapsed by changing the shape of a pipe receiving face of a pipe receiving part 19. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerant recovery device that recovers a refrigerant from a refrigerating device such as a refrigerator.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an apparatus for recovering a refrigerant from a product such as a refrigerator provided with a refrigerating apparatus has been known (for example, see Patent Document 1).
[0003]
Hereinafter, a conventional refrigerant recovery device will be described with reference to the drawings.
[0004]
FIG. 8 is a front view of a conventional refrigerant recovery device. In FIG. 8, when the refrigerant pipe 5 is clamped by the clamping portion 3 a between the punch body 2 and the clamping piece 3 of the refrigerant recovery punch body 1 and the drilling drill 4 is rotated to form a hole in the refrigerant pipe 5, The refrigerant passes through the inside of the closed cylindrical container 7 from the guide hole 6 and is recovered by the refrigerant recovery machine 8, and does not leak into the atmosphere.
[0005]
At this time, the lower surface of the closed cylindrical container 7 has a bottom surface 6a including the guide hole 6 formed of a semicircular curved surface coinciding with the circumference of the refrigerant tube 5, thereby preventing leakage of the refrigerant when the refrigerant tube 5 is pierced. A rubber packing 9 is attached except for the guide hole 6.
[0006]
The holding piece 3 includes a holding portion 3a and a handle portion 3b, and a rubber packing 10 for preventing the refrigerant tube 5 from being deformed is attached to a curved surface of the holding portion 3a.
[0007]
As described above, sealing is performed by the rubber packings 9 and 10 to prevent leakage of the refrigerant, and the shape of the receiving portion of the refrigerant pipe 5 is formed into a curved shape to increase the reliability with respect to refrigerant leakage.
[0008]
FIG. 9 is a cross-sectional view showing before and after recovery of the conventional refrigerant. FIG. 9A is a cross-sectional view before collection, in which a needle 102 is disposed on a pedestal 101 of the refrigerant extracting device 100, a seal rubber 103 penetrates the needle 102, and is disposed on an end surface of the pedestal 101. It is rectangular. Also, almost no gap is formed between the pedestal 101 and the seal rubber 103.
[0009]
Then, as shown in FIG. 9B, when the needle 102 passes through the pipe 104, the internal refrigerant passes through the recovery passage 102a provided in the needle 102, passes through the recovery pit 101a in the pedestal 101, and is recovered by the refrigerant recovery device. . At this time, the seal rubber 103 is compressed and deformed as shown in the figure, and repeats while jumping out of the pedestal 101 to seal the pipe 104 and the needle 102.
[0010]
[Patent Document 1]
JP-A-6-75609
[Problems to be solved by the invention]
However, in the above-described conventional configuration, since the shape of the closed cylindrical container 7 is a semicircular curved surface that coincides with the circumference of the refrigerant pipe 5, if the pipe diameter is different, the perforator 1 for the refrigerant recovery suitable for the pipe diameter is different. It was necessary to use a plurality of perforators 1 for refrigerant recovery according to the pipe diameter.
[0012]
Further, since the rubber packings 9 and 10 for sealing are provided along the curved surface portion serving as the receiving portion of the refrigerant pipe 5, even when the refrigerant pipe 5 is not sandwiched, the rubber packings 9 and 10 always have a stress. As a result, the rubber packings 9 and 10 immediately deteriorated, causing a refrigerant leak.
[0013]
In addition, since the rubber packings 9 and 10 have a curved shape from the beginning, the elastic force of the rubber packings 9 and 10 decreases according to the shape of the refrigerant pipe 5, and a gap is easily generated between the refrigerant pipe 5 and the rubbers 9 and 10. . For this reason, it was not possible to sufficiently collect the refrigerant from the refrigerant pipe 5.
[0014]
Further, there is a problem that the seal rubber 103 is damaged by the flange 101b of the pedestal 101 and the like, and deteriorates due to repeated expansion and contraction. .
[0015]
The present invention solves the conventional problems, and provides a rubber packing excellent in durability and reliability, and provides a fluid extracting device capable of recovering refrigerant regardless of the diameter of the refrigerant tube. .
[0016]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is characterized in that a needle that pierces the inside of a pipe to extract the fluid inside, a rubber member through which the needle penetrates and seals a fluid extraction portion, and a pedestal that supports the needle. Wherein the rubber member is located in a space formed on the end surface of the pedestal, and before the pipe is sealed, a void area is formed in the space, A portion into which a part of the rubber member compressed and deformed by the pipe and the pedestal when the needle is pierced is previously secured as a void region.
[0017]
According to a second aspect of the present invention, in addition to the first aspect of the invention, the rubber member has a longitudinal cross-sectional shape which extends from a contact portion located on the pipe side to a base portion located on the pedestal side, and is inclined. A large pressure is applied by reducing the contact area of the contact portion serving as a sealing surface. Further, when the rubber member is compressed and deformed, the displacement of a part of the rubber member in the vicinity of the contact portion being compressed and deformed in the horizontal direction is reduced.
[0018]
According to a third aspect of the present invention, in addition to the second aspect of the invention, the rubber member forms a hem portion having a maximum diameter between the contact portion and the base portion, and the contact portion and the base portion have the same shape. It is a diameter, and the positions of the contact portion and the base portion can be reversed for effective use.
[0019]
According to a fourth aspect of the present invention, in addition to the third aspect, the rubber member is located in a space formed on an end face of the pedestal, and the skirt diameter a of the rubber member is smaller than the space diameter b. On the other hand, a <b, and when the rubber member is compressed and deformed, the skirt portion that is most likely to be deformed in the horizontal direction is located in the space portion, so that the rubber member can be deformed in the void region.
[0020]
The invention according to claim 5, further comprising a pipe receiving portion for supporting the pipe, wherein in the fluid extracting device for inserting a needle into the pipe to extract the fluid in the pipe, a substantially V-shape forming the pipe receiving portion. The groove portion is formed by two continuous inclined surfaces having different angles, so that even for pipes having different outer diameters, the positional deviation at the time of setting is small, and there is no need to adjust the protrusion of the needle.
[0021]
According to a sixth aspect of the present invention, in addition to the fifth aspect of the invention, the pipe receiving portion has chamfered portions formed at both end surfaces in the hand direction, and the pipe receiving portion has a small straight pipe portion. Since the fluid extracting device is chamfered even when it is difficult to set it, it is easy to set and the work can be easily performed.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
FIG. 1 is a front view of a fluid extracting device according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of a main part of the first embodiment in a set state. FIG. 3 is a fragmentary cross-sectional view of the first embodiment during operation. FIG. 4 is a perspective view of another rubber member. FIG. 5 is a perspective view of the pipe receiving portion of the first embodiment.
[0023]
In FIG. 1, a fluid extracting device 11 includes a fixed handle 12 and a movable handle 13 made of metal and having a hollow inside, and a fulcrum 14 is provided at one end of the movable handle 13.
[0024]
The needle 15 is supported by a pedestal 16, penetrates a rubber member 17, and is detachably attached. The pipe receiving portion 19 supporting the pipe 18 has a substantially V-shaped groove 20 formed therein. The recovery passage 21 for recovering the refrigerant in the pipe is connected to the needle 15 and the hose 22 attached to the fluid extracting device 11, and is led to the existing refrigerant recovery device.
[0025]
FIG. 2 shows a state where the pipe 18 is set in the pipe receiving portion 19 of the fluid extracting device 11. As shown in the figure, a locking portion 15a having a partly enlarged diameter of the needle 15 for locking the needle 15 to the pedestal 16 is locked to the pedestal 16 via a rubber seal member 23, and the needle 15 is attached to the pedestal 16. Supported. The through-hole 15 a formed inside the needle 15 is configured to communicate with the collection passage 21.
[0026]
The rubber member 17 has a polygonal cross section, and a substantially circular base 17a penetrating through the needle 15 is abutted and fixed to the locking portion 15b. The pipe 18 has a substantially circular contact portion 17b that directly contacts the surface of the pipe 18, and has the same shape as the base 17a. The base portion 17a and the contact portion 17b have a skirt portion 17c, and the base portion 17a has an inclined surface extending from the contact portion 17b toward the skirt portion 17c, and the diameter is maximized at the skirt portion 17c. It has a shape similar to the so-called abacus beads.
[0027]
A space 16 a is formed on an end surface of the pedestal 16, and a rubber member 17 is arranged. The diameter a of the skirt 17c is 8 mm, the diameter b of the space 16a is 9 mm, and the relationship between the skirt 17c and the space 16a is a <b.
[0028]
Then, in a state where the rubber member 17 is set in the space 16a, that is, before the pipe 18 is sealed by the rubber member, the gap region 24 is formed between the space 16a and the rubber member 17. It has become. In other words, the space 16 a is not configured to be completely filled with the rubber member 17.
[0029]
The pipe receiving portion 19 has a substantially V-shaped groove 20 made of metal, and is formed of two different inclined portions, a first inclined portion 20a and a second inclined portion 20b. 6, the inclination angle A of the first inclined portion 20a is set to 60 °, and the inclination angle B forming the second inclined portion 20b is set to 90 °.
[0030]
The operation of the fluid extracting device 11 configured as described above will be described below.
[0031]
When the user holds the fixed handle 12 of the fluid extracting device 11 and grips the movable handle 13, the pedestal 16 moves toward the pipe receiving portion 19, and the needle 15 pierces the pipe 18 to collect the refrigerant. FIG. 3 is a view showing a state when the needle 15 is pierced into the pipe 18.
[0032]
At this time, the periphery of the hole 18a formed in the pipe 18 by the needle 15 is sealed by the rubber member 17 so that the refrigerant does not leak into the atmosphere. The rubber member 17 is compressed in the direction of the refrigerant recovery path. At this time, since the compressed rubber member 17 has a skirt portion 17c having the largest diameter in the diameter direction inside the space portion 16a, the rubber member 17 is compressed and deformed in the void region 24 of the space portion 16a. For this reason, the void area 24 acts as an absorption allowance for the compression, and the rubber member 17 does not protrude outward from the space 16a and is not compressed, and does not climb over the flange 16b of the pedestal 16.
[0033]
Therefore, in the operation of extracting the refrigerant from the pipe 18 of the refrigerator or the like, the rubber member 17 does not ride on the flange 16b of the base 16 and is repeatedly compressed, and the rubber member 17 does not receive an external force from the flange 16b. Cracking or cracking of the rubber member 17 is reduced.
[0034]
In addition, the rubber member 17 is hardly spread in the direction perpendicular to the compression direction in the direction of compression, and expands so as to fill the void region 24 and is restricted and deformed in the space 16a by the flange 16b. Can be.
[0035]
2 and 6, the pipe receiving portion 19 is formed of a two-step inclined surface of a first inclined portion 20a (the inclination angle A is 60 °) and a second inclined portion 20b (the inclination angle B is 90 °). Therefore, the displacement of the lower fulcrum of the pipe 18 having an outer diameter of 4 to 8 mm used in the refrigerator can be reduced and fixed.
[0036]
Also, when set in the pipe receiving portion 19, it is not necessary to adjust the allowance of the needle 15 irrespective of the pipe diameter (range of 4 to 8 mm) and work efficiently even when refrigerators having different pipe diameters are mixed. It can be carried out.
[0037]
Then, even when the needle 15 is inserted, the flattening of the pipe due to the pressure from the needle 15 is reduced, the hole can be reliably formed, and the extracted refrigerant passes from the inside of the needle 15 to the hose 22 through the collection passage 21. It can be reliably guided to the existing refrigerant recovery device. In addition, the collapse of the pipe due to the drilling operation can be reduced, and the refrigerant recovery rate can be improved.
[0038]
FIG. 4 shows a rubber member 25 having a shape different from that of the rubber member 17. The band member 25 c having a chamfered shape without the skirt portion 17 c like the rubber member 17 is formed, so that the needle 15 is pierced into the pipe 18. When a force is applied in the direction from the contact portion 25b to the base portion 25a when inserted, the stress applied to the band portion 25c is dispersed, and the reliability of the rubber member 25 can be secured.
[0039]
FIG. 5 shows another rubber member 26, which has an inclined surface 26c extending from the contact portion 26b toward the base 26a. Therefore, when the rubber member 26 is compressed, the base 26a has a larger area with respect to the abutment 26b. Even if expansion and contraction are repeated, cracking and crushing can be prevented.
[0040]
FIG. 7 is a side view of the pipe receiving portion 19. The pipe receiving portion 19 has chamfered portions 19a on both end surfaces in the lengthwise direction. Therefore, even if the pipe 18 has many curved portions as shown in the figure, the chamfered portion 19a is formed, so that the fluid extracting device can be easily set, and the refrigerant can be recovered smoothly.
[0041]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention provides a needle for removing a fluid inside by inserting the needle into a pipe, a rubber member through which the needle penetrates and seals a fluid removal portion, In a fluid extraction device including a pedestal supporting a needle, the rubber member is located in a space formed on an end surface of the pedestal, and before sealing the pipe, a void area is formed in the space. Therefore, it is possible to regulate the deformation of the rubber member and maintain the durability.
[0042]
According to a second aspect of the present invention, in the first aspect of the present invention, the longitudinal cross-sectional shape of the rubber member expands and slopes from a contact portion located on the pipe side toward a base located on the pedestal side. A skirt portion is formed, and it is possible to reduce cracking or crushing of the rubber due to repeated deformation of the rubber member, and to secure reliability.
[0043]
According to a third aspect of the present invention, in the second aspect of the invention, the rubber member forms a hem portion having a maximum diameter between the contact portion and the base portion, and the contact portion and the base portion are They have substantially the same diameter, and the rubber member can be used effectively.
[0044]
According to a fourth aspect of the present invention, in the third aspect of the present invention, the rubber member is located in a space formed on an end surface of the pedestal, and a hem diameter a of the rubber member is equal to the space diameter b. A <b, and the external pressure applied to the rubber member can be reduced to extend the life.
[0045]
According to a fifth aspect of the present invention, there is provided a fluid extracting device that includes a pipe receiving portion that supports a pipe, and inserts a needle into the pipe to extract a fluid in the pipe. Since the V-shaped groove portion is formed by two continuous inclined surfaces having different angles, the collapse of the pipe can be reduced, and the hole can be accurately formed.
[0046]
According to a sixth aspect of the present invention, in the fifth aspect of the invention, the pipe receiving portion has chamfered portions formed at both end surfaces in the hand direction, so that work can be performed smoothly. it can.
[Brief description of the drawings]
FIG. 1 is a front view of a fluid extracting device according to a first embodiment of the present invention; FIG. 2 is a sectional view of a main part of a set state of the first embodiment of the present invention; FIG. FIG. 4 is a perspective view of another rubber member of the present invention. FIG. 5 is a perspective view of another rubber member of the present invention. FIG. 6 is a pipe of Embodiment 1 of the present invention. FIG. 7 is a side view of a pipe receiving portion according to the first embodiment of the present invention. FIG. 8 is a perspective view of a conventional refrigerant recovery device. FIG. 9 is a diagram showing a conventional refrigerant recovery device before and before recovery. Sectional view showing the back [Description of reference numerals]
11 Fluid extraction device 15 Needle 16 Base 16a Space 17, 25, 26 Rubber 17a, 25a, 26a Base 17b, 25b, 26b Contact 18 Pipe 19 Pipe receiving 19a Chamfer 20 V-shaped groove 20a First slope Part 20b Second inclined part 24 Void area

Claims (6)

In a fluid removal device including a needle that pierces the inside of a pipe to remove the fluid therein, a rubber member through which the needle penetrates and seals a fluid removal portion, and a pedestal that supports the needle, the rubber member includes: A fluid extraction device, which is located in a space formed on an end face of the pedestal and has a void area formed in the space before sealing the pipe. 2. The fluid extracting device according to claim 1, wherein a vertical cross-sectional shape of the rubber member spreads and inclines from a contact portion located on the pipe side toward a base located on the pedestal side to form a hem portion. 3. The fluid extracting device according to claim 2, wherein the rubber member forms a hem portion having a maximum diameter between the contact portion and the base portion, and the contact portion and the base portion have substantially the same diameter. The fluid according to claim 3, wherein the rubber member is located in a space formed on an end surface of the pedestal, and a skirt diameter a of the rubber member satisfies a <b with respect to the space diameter b. Sampling device. In a fluid extracting device including a pipe receiving portion that supports a pipe, and a needle is inserted into the pipe to extract fluid in the pipe, a substantially V-shaped groove portion that forms the pipe receiving portion has two different angles continuous with each other. A fluid extracting device characterized by being formed with an inclined surface. The fluid extracting device according to claim 5, wherein the pipe receiving portion has chamfers formed at both end surfaces in the hand direction.

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