KR20090048708A - Pressure gauge fixed with the flare nut - Google Patents

Pressure gauge fixed with the flare nut Download PDF

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Publication number
KR20090048708A
KR20090048708A KR1020070114699A KR20070114699A KR20090048708A KR 20090048708 A KR20090048708 A KR 20090048708A KR 1020070114699 A KR1020070114699 A KR 1020070114699A KR 20070114699 A KR20070114699 A KR 20070114699A KR 20090048708 A KR20090048708 A KR 20090048708A
Authority
KR
South Korea
Prior art keywords
pipe
pressure gauge
nut
flare nut
pressure
Prior art date
Application number
KR1020070114699A
Other languages
Korean (ko)
Inventor
이동희
Original Assignee
(주)장안엔지니어링
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)장안엔지니어링 filed Critical (주)장안엔지니어링
Priority to KR1020070114699A priority Critical patent/KR20090048708A/en
Publication of KR20090048708A publication Critical patent/KR20090048708A/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • G01D11/305—Panel mounting of instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/16—Dials; Mounting of dials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/022—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges constructional details, e.g. mounting of elastically-deformable gauges

Abstract

The present invention not only makes it easier to install and detach the pressure gauge installed in the air conditioner refrigerant pipe connection box to measure the pressure inside the pipe, but also the flare nut fixed pressure gauge to make the manufacturing process simpler. It is about. The present invention provides a pressure gauge, comprising: a gauge body having an internal configuration such that a position of a guide according to pressure is changed; A connecting tube extending to a rear side of the gauge body by a predetermined length; An insertion end formed at an end of the connection pipe to insert a predetermined section into the inner end of the inner pipe; A packing sheet formed of an annular groove such that a packing made of rubber material is mounted on an outer circumference of the insertion end; A screw fixing part which is formed to be screwed into the inner circumferential edge of the flap nut on the outer circumferential edge of the connecting pipe so that the insertion end located inside the inner pipe does not fall outward; That configuration is made, including.

Flare nut, pressure gauge, gas, air tight

Description

Pressure gauge fixed with the flare nut

The present invention relates to a flare nut fixed pressure gauge, and more particularly, in order to measure the pressure inside the pipe, as well as to facilitate the installation and removal of the pressure gauge installed in the air conditioner refrigerant pipe connection box, etc. A flared nut stationary pressure gauge is made to make this simpler.

It is common for the copper pipe for refrigerant circulation of an air conditioner in which a state filled with a high pressure gas of a constant pressure is to be maintained, and various devices for airtightness are provided from the time of the piping.

Particularly, in recent years, even in the process of constructing a building, in consideration of the installation of an air conditioner, air conditioner copper pipes for refrigerant circulation are to be piped in advance. Air conditioner refrigerant pipe connection box and copper pipe connection connector are installed.

For the general structure of the air conditioner refrigerant pipe connection box, the utility model registration application filed by the present applicant to the Korean Intellectual Property Office, including the Korean Utility Model Registration No. 20-424556, the Korean Patent Office Registration No. 10-713588, etc. It is shown in detail in 2007-0010919.

On the other hand, the connector for the copper tube is assembled to the air conditioner refrigerant pipe connecting box is mainly used elbow type connector and flare nut as shown in FIG.

1 is a view showing the installation state of the air conditioner refrigerant pipe connection box according to the prior art, a plurality of connectors 30 is fixedly mounted in the air conditioner refrigerant pipe connection box 20, such as bolts, of the connector 30 At one end, the copper tube 10 for refrigerant circulation is connected, and the flare nut 40 is fastened so that the connected state can be maintained.

In addition, the other side of the connector 30 has a structure in which a filling nipple for filling nitrogen gas or the like, or a pressure gauge for measuring pressure inside the pipe, may be mounted via another flare nut 50.

That is, the airtight state of the pipe can be checked by measuring the pressure inside the copper pipe displayed by the pressure gauge while the nitrogen gas of high pressure is filled into the refrigerant circulation copper pipe 10 piped through the filling nipple. It is composed.

In the conventional pressure gauge 60, as shown in FIG. 2, a small diameter connecting tube 64 is connected to the rear side of the gauge body 62, and a flare nut is connected to the other end of the connecting tube 64. The gauge assembly member 66 accommodated in the interior of the 50 is connected to the structure.

However, the part where the gauge body 62 and the connecting pipe 64 are connected, and the part where the connecting pipe 64 and the gauge assembly member 66 are connected are connected by a welding method, so that the manufacturing process is performed. There was a troublesome process.

Therefore, the present invention has been made to solve the problems of the prior art as described above, to facilitate the installation and removal of the pressure gauge installed in the air conditioner refrigerant pipe connection box to measure the pressure in the pipe. It is also an object of the present invention to provide a flared nut stationary pressure gauge which makes the manufacturing process simpler.

As a means of solving the problem to be solved as described above, the present invention is configured as follows. That is, the present invention is a nut fastening portion to which the flare nut can be fastened to the outer periphery of one side is formed on the inner circumference of the nut fastening portion and the inner pipe of the diameter smaller than the inner diameter of the nut fastening portion projected to a predetermined length outward, A pressure gauge mounted through a flare nut assembled in a nut fastening portion of the connector to measure pressure in a pipe, the pressure gauge comprising: a gauge body configured to change a position of a guide according to pressure; A connecting tube extending in a predetermined length to the rear side of the gauge body; An insertion end formed at an end of the connection pipe to insert a predetermined section into the inner end of the inner pipe; A packing sheet formed of an annular groove such that a packing made of rubber material is mounted on an outer circumference of the insertion end; A screw fixing part which is formed to be screwed into the inner circumferential edge of the flap nut on the outer circumferential edge of the connecting pipe so that the insertion end located inside the inner pipe does not fall outward; That configuration is made, including.

According to the flared nut fixed pressure gauge configured as described above, a structure for assembling with the flare nut is integrally formed on the rear side of the gauge body, so that the gauge body is connected to the connector and the flare nut side without a separate welding process. There is a big advantage to mounting in an easy and simple way.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment according to the configuration and operation of the flare nut fixed pressure gauge according to the present invention will be described.

Figure 3 is an exploded perspective view of the pressure gauge and its peripheral parts according to the present invention, Figure 4 is a front view of the pressure gauge according to the invention, Figure 5 is a side view of the pressure gauge according to the invention, Figure 6 is the present invention As an assembled state diagram of a pressure gauge according to the present invention, reference numeral 200 denoted in the drawing indicates a pressure gauge according to the present invention.

The pressure gauge 200 according to the present invention is not used alone, but used together with the connector 100 and the flare nut 110 shown in FIG. 3, the pressure gauge 200 according to the present invention. Prior to fabrication of the connector 100 and flare nut 110 is required for fabrication.

That is, the nut fastening portion 102 should be formed to allow the flare nut 110 to be fastened to the outer peripheral edge of the connector 100 to which the pipe is connected to one side, and the inner circumference of the nut fastening portion 102. On the side, the inner pipe 104 having a diameter smaller than the inner diameter of the nut fastening portion 102 should protrude outward a predetermined length.

In addition, an annular locking jaw 112 having an inclined surface 112a is formed at one side of the inner diameter side of the flare nut 110, and in particular, at the inner circumference of the locking jaw 112, the thread of the pressure gauge 200 to be recessed. Female thread portion 114 for screwing with the government 250 is to be formed.

That is, the pressure gauge 200 according to the present invention is screwed into the female threaded portion 114 provided at the engaging jaw 112 of the flare nut 110 before the flared nut 110 is screwed into the connector 100. The configuration is made to be.

To this end, the connecting pipe 220 is formed on the rear side of the pressure gauge 200 according to the present invention in a form of protruding a predetermined section, and is formed on the locking jaw portion of the flare nut 110 in the middle of the front portion of the connecting pipe 220. The female screw part 114 and the screw fixing part 250 for screwing is formed.

In particular, the pressure gauge 200 according to the present invention is configured in consideration of the fact that the size of the connector 100 and the flare nut 110 connected to the pipe having a relatively thin diameter is formed relatively small, the flare nut 110 Hanging jaw 112 of the inner circumference is to be used more efficiently.

On the other hand, when the flare nut 110 is assembled to the nut fastening portion 102 of the connector 100, a predetermined section is inserted into the inner diameter side of the inner pipe 104 provided in the connector 100 at the distal end of the connector tube 220. Insertion end 230 is formed, and in the middle of the insertion end 230 is formed an annular packing sheet 240 for mounting the packing 300 made of a rubber material.

The packing 300 mounted on the packing sheet 240 is to prevent the airtight from being destroyed through the gap between the end of the inner pipe 104 and the connection pipe 220. The flare nut 110 is connected to the connector 100. In the process of mounting on the side) compression is made.

Specifications such as the size and thickness of the packing 300 may be made to the extent that sufficient airtightness can be maintained in consideration of the pressure of the fluid filled in the pipe.

On the other hand, the inside of the gauge body 210 of the pressure gauge 200 is formed with a guide 212 to change the position according to the pressure, as shown in Figure 5, since the internal configuration of the gauge body 210 is general Detailed description thereof will be omitted.

In order to mount the pressure gauge 200 according to the present invention, a filling nipple (not shown) is installed in the female thread part 114 formed at the inner circumferential edge of the flap nut 110 instead of the pressure gauge 200. It could be.

In the above description, the pressure gauge 200 configured according to the present invention is mainly applied to the apparatus for checking the pressure inside the copper pipe for air conditioner refrigerant circulation, but the present invention is not limited to the above-described embodiment, but the present invention. Various implementations are possible within the range allowed by the technical idea described in the claims.

1 is a view showing an installation state of a refrigerant pipe connection box according to the prior art.

2 is a view for explaining the configuration of a pressure gauge according to the prior art.

Figure 3 is an exploded perspective view of the pressure gauge and its peripheral parts in accordance with the present invention.

4 is a front view of a pressure gauge according to the present invention.

5 is a side view of a pressure gauge according to the present invention;

Figure 6 is an assembled state of the pressure gauge according to the present invention.

※ Explanation of code for main part of drawing

100 connector 104 inner pipe

110: flare nut 112: locking jaw

114: female thread 200: pressure gauge

210: gauge body 212: instructions

220: connector 230: insertion end

240: packing sheet 250: screw fixing

300: Packing

Claims (1)

On the outer circumference of one side, a nut fastening portion for fastening the flare nut is formed, but at the inner circumference of the nut fastening portion, an inner pipe having a diameter smaller than the inner diameter of the nut fastening portion protrudes outward a predetermined length, and the nut fastening of the connector In the pressure gauge which is mounted via the flare nut assembled to the part to allow the pressure measurement in the pipe, A gauge body 210 having an internal configuration such that a position of the guide according to the pressure change is changed; A connecting tube 220 extending in a predetermined length to the rear side of the gauge body 210; An insertion end 230 formed at an end of the connection pipe 220 to allow a predetermined section to be inserted into an inner end of the inner pipe 104; A packing sheet 240 formed of an annular groove such that a rubber packing 300 is mounted on an outer circumference of the insertion end 230; The inner periphery of the connecting pipe 220 is screwed with the inner periphery of the engaging jaw 112 of the flare nut 110 so that the insertion end 230 positioned inside the inner pipe 104 does not fall outward. Accident government 250; Flare nut fixed filling nipple configured to include.
KR1020070114699A 2007-11-12 2007-11-12 Pressure gauge fixed with the flare nut KR20090048708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070114699A KR20090048708A (en) 2007-11-12 2007-11-12 Pressure gauge fixed with the flare nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070114699A KR20090048708A (en) 2007-11-12 2007-11-12 Pressure gauge fixed with the flare nut

Publications (1)

Publication Number Publication Date
KR20090048708A true KR20090048708A (en) 2009-05-15

Family

ID=40857624

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070114699A KR20090048708A (en) 2007-11-12 2007-11-12 Pressure gauge fixed with the flare nut

Country Status (1)

Country Link
KR (1) KR20090048708A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931624B1 (en) * 2009-06-22 2009-12-14 (주) 청마씨스텍 Joint system box aircondition pipe
KR20210153522A (en) 2020-06-10 2021-12-17 김웅 Gasket for connecting refrigerant pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931624B1 (en) * 2009-06-22 2009-12-14 (주) 청마씨스텍 Joint system box aircondition pipe
KR20210153522A (en) 2020-06-10 2021-12-17 김웅 Gasket for connecting refrigerant pipes

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E902 Notification of reason for refusal
E601 Decision to refuse application