KR101717351B1 - Pressure sensor for measuring refrigerant - Google Patents

Pressure sensor for measuring refrigerant Download PDF

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Publication number
KR101717351B1
KR101717351B1 KR1020150094891A KR20150094891A KR101717351B1 KR 101717351 B1 KR101717351 B1 KR 101717351B1 KR 1020150094891 A KR1020150094891 A KR 1020150094891A KR 20150094891 A KR20150094891 A KR 20150094891A KR 101717351 B1 KR101717351 B1 KR 101717351B1
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KR
South Korea
Prior art keywords
refrigerant
pressure sensor
refrigerant pipe
pipe
fastening hole
Prior art date
Application number
KR1020150094891A
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Korean (ko)
Other versions
KR20170004488A (en
Inventor
김태호
유동현
박수태
김태윤
Original Assignee
암페놀센싱코리아 유한회사
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Application filed by 암페놀센싱코리아 유한회사 filed Critical 암페놀센싱코리아 유한회사
Priority to KR1020150094891A priority Critical patent/KR101717351B1/en
Publication of KR20170004488A publication Critical patent/KR20170004488A/en
Application granted granted Critical
Publication of KR101717351B1 publication Critical patent/KR101717351B1/en

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    • 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
    • G01L19/0007—Fluidic connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The present invention relates to a pressure sensor for measuring the pressure of refrigerant in a vehicle air conditioner or a refrigerator. More specifically, the present invention relates to a pressure sensor in which a refrigerant pipe is assembled and connected to a refrigerant inlet of a pressure sensor, The coupling part 22 formed at the end of the refrigerant pipe 20 is screwed into the fastening hole 12 formed in the refrigerant pipe 20 and the refrigerant pipe 20, And the airtight portion 30 having a locking and sealing function is injected by injecting the epoxy resin along with the epoxy resin, so that the manufacturing process is simple and the process can be diversified compared with the conventional brazing welding method. And it is characterized by providing excellent quality.

Description

[0001] PRESSURE SENSOR FOR MEASURING REFRIGERANT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure sensor for measuring the pressure of a refrigerant in a vehicle air conditioner or a refrigerator, and more particularly, And a sealing method, so that the manufacturing process is simple and the process can be diversified, thereby reducing the manufacturing cost and improving the reliability at high pressure.

Generally, in a cooling system applied to a vehicle air conditioner or a refrigerator, refrigerant is used for generation of cold air.

That is, the cooling system condenses and expands the refrigerant as a heat exchange medium, circulates the refrigerant in a reduced temperature state, and generates cold air.

The cooling system includes a compressor for compressing a refrigerant, a condenser for condensing the refrigerant compressed in the compressor, an expansion valve for rapidly expanding the refrigerant condensed and liquefied in the condenser, and an expansion valve for expanding the refrigerant expanded in the expansion valve And an evaporator that generates cold air by using the latent heat of evaporation of the refrigerant while evaporating.

If the phase change of the refrigerant in the cooling system described above (change to gas, liquid, liquid or gas) and circulation of the refrigerant are not smooth, the cooling system can not function.

Therefore, a pressure sensor is connected to an arbitrary position of the refrigerant pipe through which the refrigerant circulates to measure and control the pressure of the refrigerant.

As described above, the conventional pressure sensor 2 for measuring the pressure of the refrigerant in the cooling system is connected to the refrigerant pipe 3 by the brazing welding method as shown in Fig.

That is, the end of the refrigerant pipe 3, which is a copper tube, is inserted into the refrigerant inlet 2a of the pressure sensor 2 and the end of the refrigerant pipe is assembled and connected by the brazing welding method.

However, in the conventional brazing welding method, since the temperature of the welded portion occurs at 500 ° C or more, brazing welding is first performed at the end of the refrigerant pipe to reduce the damage of the pressure sensor, and then the pressure sensor is connected to the pressure sensor. It is impossible to diversify the process, deteriorate the assembling productivity, and requires a large assembly cost. Especially, since the reliability of the welding portion is low at high pressure, there is a problem that the product quality is deteriorated due to leakage of refrigerant.

Patent Document 1: Registration No. 10-0725894 Patent Document 2: Registration No. 10-1506802

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems of the prior art, and the refrigerant pipe is connected to the refrigerant inlet of the pressure sensor by a locking and sealing method using epoxy The manufacturing process is simple and the process can be diversified, thereby reducing the manufacturing cost and improving the reliability at high pressure, thereby providing excellent quality.

According to the present invention, a refrigerant pipe is assembled and connected to a refrigerant inlet port formed in a body portion of a pressure sensor, a fastening hole is formed in a refrigerant inlet port of a body portion of the pressure sensor, And an airtight portion having a locking and sealing function is formed by injecting an epoxy resin along a clearance between the coolant inlet port of the body portion and the clearance portion of the coolant pipe.

In the present invention, since the fastening hole is formed in the refrigerant inlet of the pressure sensor and the fastening part is formed at the end of the refrigerant pipe, the refrigerant pipe is screwed to the refrigerant inlet port of the pressure sensor and then the refrigerant pipe is assembled and connected by a method of locking and sealing by epoxy scanning. Compared with the brazing welding method, the manufacturing process is simple and the process can be diversified, so that the manufacturing cost is remarkably reduced, and the reliability is improved at high pressure, which is superior in quality.

1 is a cross-sectional view showing a pressure sensor connected and assembled with a conventional refrigerant pipe;
2 is a cross-sectional view showing a connection assembly structure of a pressure sensor according to the present invention.
3 is an enlarged view of a portion "A"
4 is an exploded sectional view of Fig.
5 is an assembling process diagram of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The pressure sensor 100 for measuring a refrigerant having a screw coupling structure of the present invention provides a structure in which a pressure sensor is assembled and connected to a refrigerant pipe by screwing and epoxy scanning as shown in FIGS.

That is, the present invention is characterized in that a fastening hole 12 is formed in the refrigerant inlet port 11 of the pressure sensor body 10 and a fastening hole 12 is formed in the end of the refrigerant pipe 20 to correspond to the fastening hole 12 of the refrigerant inlet port 11 And an epoxy resin is injected along the coupling gap between the refrigerant inlet port 11 of the body 10 and the refrigerant pipe 20 to form a sealing part 22 having a locking and sealing function, (30).

At this time, the fastening part 22 of the refrigerant pipe 20 is formed to have a diameter at least smaller than the diameter of the refrigerant pipe 20 and is screwed.

In addition, a ring-shaped recessed groove 23, which can be filled with an epoxy resin, is formed on the outer periphery of the rear end of the fastening part 22 so as to form the hermetic part 30 to the inside of the coolant inlet port 11 of the body part. desirable.

The coolant inlet 11 of the body 10 and the coolant pipe 20 may be closely coupled to each other by chamfered portions 11a and 23a.

It is noted that the airtight portion 30 may be replaced by a material other than an epoxy resin, and the degree of simple material change of the airtight portion is attributed to the scope of the present invention.

The pressure sensor 100 is constructed such that an SUS membrane 51, a head 52, a PCB 53, etc. are intensively assembled behind the body 10 to measure the pressure of the refrigerant.

Also, according to the present invention, the upper fastening hole 12 and the fastening portion 22 may be constructed in a non-screw-in type rather than a screw type.

In this case, the diameter of the fastening hole 12 is smaller than the diameter of the fastening portion 22.

Also, according to the present invention, the fastening portion and the fastening hole may be configured in various other forms that can be fastened and coupled with each other.

Hereinafter, the operation and operation of the present invention will be described.

In the cooling system applied to a vehicle air conditioner, a refrigerator, or the like, the refrigerant pipe (20) through which the refrigerant passes is connected to the pressure sensor (100) to measure whether or not the pressure of the refrigerant is abnormal.

Particularly, the refrigerant pipe 20 and the pressure sensor 100 are assembled and connected by a screw connection and an epoxy sealing method instead of a conventional brazing welding method.

The fastening portion 22 formed at the end of the refrigerant pipe 20 is fastened to the fastening hole 12 formed at the refrigerant inlet 11 of the pressure sensor body 10 in a screw- do.

The hermetic seal part 30 is formed by injecting epoxy resin along the clearance between the coolant inlet port 11 of the body part 10 and the coolant pipe 20.

At this time, the airtight portion 30 fills the clearance between the coolant inlet port 11 and the coolant pipe 20 by epoxy injection, so that the coolant pipe 20 and the body portion 10 And they are joined to each other to perform a locking function.

The airtight portion 30 can be formed up to the inside of the coolant inlet port 11 of the body portion while the silicon is filled up to the position of the ring-shaped recessed portion 23 formed at the outer peripheral edge of the rear end of the fastening portion 22, 20 and the body 10 of the present invention.

In addition, since the coolant inlet 11 of the body 10 and the rear of the fastening portion 22 of the refrigerant pipe 20 are tightly coupled to each other by chamfered portions 11a and 23a formed to correspond to each other, It is to provide excellent.

Therefore, the pressure sensor of the present invention can connect the refrigerant pipe to the refrigerant inlet of the pressure sensor by a locking and sealing method using an epoxy after threaded coupling rather than a conventional brazing method, so that the manufacturing process is simple and the process can be diversified. Thereby reducing the manufacturing cost and improving the reliability at high pressure and improving the quality.

10:
11: Refrigerant inlet
12: Fasteners
20: Refrigerant pipe
22:
30:
100: Pressure sensor

Claims (3)

A pressure sensor for measuring a refrigerant in which a refrigerant pipe is assembled and connected to a refrigerant inlet formed in a body portion of a pressure sensor,
A fastening hole (12) is formed in the refrigerant inlet (11) of the pressure sensor body (10)
The refrigerant pipe 20 and the refrigerant pipe 20 are connected to each other by a fastening part 22 corresponding to the fastening hole 12 of the refrigerant inlet port formed at the end of the refrigerant pipe 20, ) To form an airtight portion (30) having a locking and sealing function by injecting an epoxy resin along a joining clearance portion of the sealing portion
A fastening part (22) is screwed to the fastening hole (12)
A ring-shaped recessed groove 23 is formed at the outer periphery of the rear end of the fastening part 22 of the refrigerant pipe to form an airtight portion 30 to the inside of the refrigerant inlet 11 of the body part. Pressure sensors for air-conditioner pipes. delete delete
KR1020150094891A 2015-07-02 2015-07-02 Pressure sensor for measuring refrigerant KR101717351B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150094891A KR101717351B1 (en) 2015-07-02 2015-07-02 Pressure sensor for measuring refrigerant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150094891A KR101717351B1 (en) 2015-07-02 2015-07-02 Pressure sensor for measuring refrigerant

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KR20170004488A KR20170004488A (en) 2017-01-11
KR101717351B1 true KR101717351B1 (en) 2017-03-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102193421B1 (en) * 2019-09-19 2020-12-22 하이윈 테크놀로지스 코포레이션 Ball screw

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101195425B1 (en) 2012-06-15 2012-10-30 오형동 Connecting structure of refrigerant pipe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08193898A (en) * 1995-01-13 1996-07-30 Fuji Electric Co Ltd Package assembling structure for semiconductor pressure sensor
KR100725894B1 (en) 2005-11-28 2007-06-08 주식회사 애트랩 Pressure sensor and pressure measurement method
KR100880246B1 (en) * 2007-04-11 2009-01-28 희성정밀 주식회사 Pressure Sensing Module for Air Conditioning System
KR101089589B1 (en) * 2009-04-13 2011-12-05 주식회사 포스트쿨텍 Pressure gauge for test of airconditioner gas pipe
KR101506802B1 (en) 2013-09-03 2015-03-30 에이에스텍 주식회사 Sensor for detecting pressure of refrigerant of airconditioner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101195425B1 (en) 2012-06-15 2012-10-30 오형동 Connecting structure of refrigerant pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102193421B1 (en) * 2019-09-19 2020-12-22 하이윈 테크놀로지스 코포레이션 Ball screw

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