Complete refrigeration machine brand-new stainless steel miniature electromagnetic valve capable of reducing cost

Abstract

The invention relates to the technical field of electromagnetic valves, in particular to a brand-new stainless steel miniature electromagnetic valve of a refrigeration complete machine capable of reducing cost, which comprises a stainless steel sleeve, a magnetic core is slidably connected in the stainless steel sleeve, and a plug is slidably connected in the stainless steel sleeve and above the magnetic core. A cylindrical spring is sleeved with the plug, a shell is installed outside the stainless steel sleeve, an electromagnetic coil is wound around the stainless steel sleeve, a valve seat is fixedly connected to the position, located below the magnetic core, of the inner side wall of the stainless steel sleeve, and a steel ball is arranged between the valve seat and the magnetic core. The stainless steel sleeve is adopted to integrally replace a traditional brass body, use of high-price brass materials is reduced, meanwhile, manufacturing procedures are simplified (for example, welding links are reduced), the material cost and the production process difficulty are reduced, and the price advantage of products in market competition is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electromagnetic valves, in particular to a new stainless steel micro electromagnetic valve for refrigeration complete machines. BACKGROUND

[0002] Although the existing electromagnetic valve (such as a product designed according to the refrigeration electromagnetic valve JB / T4119-2013) can meet the basic control requirements of a refrigeration system, there are obvious limitations.

[0003] The traditional electromagnetic valve usually adopts brass as the body material, the material cost is high, and the manufacturing process needs to pass through multiple complex welding procedures, further increasing the overall manufacturing cost.

[0004] Due to the limitations of material properties and structural design, the service life of the existing product is usually only about 300,000 times in the frequent on-off commutation process, which cannot meet the dual requirements of high quality and low cost in the market competition of refrigeration complete machines, and cannot meet the core demand of improving the product competitiveness of the complete machine manufacturers. SUMMARY

[0005] Therefore, the application provides a new stainless steel micro electromagnetic valve for refrigeration complete machines to solve or alleviate the technical problems in the prior art, and at least provides a beneficial choice.

[0006] The technical scheme of the application is as follows: a new stainless steel micro electromagnetic valve for refrigeration complete machines, which comprises a stainless steel sleeve, a magnetic core is slidably connected in the inside of the stainless steel sleeve, a plug is slidably connected above the magnetic core in the inside of the stainless steel sleeve, a cylindrical spring is sleeved in the inside of the plug, a shell is mounted on the outside of the stainless steel sleeve, an electromagnetic coil is wound on the outside of the stainless steel sleeve, a valve seat is fixedly connected to the inner side wall of the stainless steel sleeve below the magnetic core, a steel ball is arranged between the valve seat and the magnetic core, an air inlet copper pipe is communicated with the outer side wall of the stainless steel sleeve, and an air outlet copper pipe is communicated with the bottom of the valve seat.

[0007] Further preferably, the top of the shell and the inside of the plug are threadedly connected with a coil screw.

[0008] Further preferably, a filter screen is mounted in the inside of the air inlet copper pipe.

[0009] Further preferably, the valve seat is made of stainless steel or brass, the stainless steel sleeve is 8-10, the steel ball is 4-6, and the valve seat is 7-9.

[0010] The application has the following advantages due to the above technical scheme:

[0011] Firstly, the stainless steel sleeve of the present application is used to replace the traditional brass body, which reduces the use of high-priced brass materials, simplifies the manufacturing process (such as reducing the welding link), reduces the material cost and production process difficulty, and greatly improves the price advantage of the product in market competition.

[0012] Secondly, through the improvement of the new overall stainless steel design and hard sealing method, and through multiple research and development test verifications, the service life of the product is improved from 300,000 times of the prior art to more than 600,000 times in the frequent commutation process of power-on and power-off, which effectively improves the reliability and service life of the refrigeration complete machine.

[0013] Thirdly, the present application realizes low cost while ensuring high quality (long service life and stable sealing), perfectly meets the demand of the refrigeration complete machine industry for "high quality and low price" of core components in fierce market competition, and has strong practical value and market application prospect.

[0014] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent from a reading of the following detailed description of the application, which makes reference to the drawings described below. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Fig. 1 is a structural diagram of the present application;

[0017] Fig. 2 is a sectional view of the present application in power-off state;

[0018] Fig. 3 is a sectional view of the present application in power-on state.

[0019] Reference signs: 1, stainless steel sleeve; 2, magnetic core; 3, plug; 4, cylindrical spring; 5, shell; 6, coil screw; 7, electromagnetic coil; 8, valve seat; 9, inlet brass pipe; 10, filter screen; 11, steel ball; 12, outlet brass pipe. DETAILED DESCRIPTION

[0020] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0021] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0022] As Figs. 1-3 shown, the embodiment of the present application provides a new stainless steel micro electromagnetic valve of refrigeration complete machine with reduced cost, which comprises a stainless steel sleeve 1, a magnetic core 2 slidably connected inside the stainless steel sleeve 1, a plug 3 slidably connected above the magnetic core 2 inside the stainless steel sleeve 1, a cylindrical spring 4 sleeved inside the plug 3, a shell 5 mounted outside the stainless steel sleeve 1, an electromagnetic coil 7 wound outside the stainless steel sleeve 1, a valve seat 8 fixedly connected to the inner side wall of the stainless steel sleeve 1 below the magnetic core 2, a steel ball 11 arranged between the valve seat 8 and the magnetic core 2, an air inlet copper pipe 9 communicated with the outer side wall of the stainless steel sleeve 1, and an air outlet copper pipe 12 communicated with the bottom of the valve seat 8.

[0023] In one embodiment, the top of the shell 5 and the inside of the plug 3 are threadedly connected with a coil screw 6.

[0024] In one embodiment, the inside of the air inlet copper pipe 9 is provided with a filter screen 10.

[0025] In one embodiment, the valve seat 8 is made of stainless steel or brass, the stainless steel sleeve 1 is Φ8-Φ10, the steel ball 11 is Φ4-Φ6, and the valve seat 8 is Φ7-Φ9.

[0026] When the electromagnetic coil 7 is not powered, the cylindrical spring 4 is in a natural extension state, the elastic force of the cylindrical spring 4 pushes the magnetic core 2 to move downward, the steel ball 11 at the bottom of the magnetic core 2 tightly abuts against the valve seat 8, a hard seal is formed, the communication between the air inlet copper pipe 9 and the air outlet copper pipe 12 is blocked, and the refrigerant cannot pass through the electromagnetic valve to enter the refrigeration cycle;

[0027] Start state (power on): when the electromagnetic coil 7 is connected to the power supply, the coil generates a magnetic field, the magnetic field force overcomes the elastic force of the cylindrical spring 4, the magnetic core 2 is attracted upward, and the magnetic core 2 is tightly abutted against the plug 3 without gap. At this time, the steel ball 11 is separated from the valve seat 8 along with the magnetic core 2, the sealing state is released, the high-pressure refrigerant in the air inlet copper pipe 9 flows to the air outlet copper pipe 12 through the internal passage of the stainless steel sleeve 1, enters the refrigeration cycle, and realizes the on-off or flow direction control of the refrigeration system;

[0028] Reset state (power off): after the electromagnetic coil 7 is powered off, the magnetic field force disappears, the elastic force of the cylindrical spring 4 again pushes the magnetic core 2 to move downward, the steel ball 11 recombines with the valve seat 8 to form a seal, the refrigerant flow is blocked, the electromagnetic valve returns to the initial closed state, and the refrigeration cycle is exited.

[0029] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A novel stainless steel miniature solenoid valve for a cost-reducing refrigeration unit, characterized in that: The system includes a stainless steel sleeve (1), a magnetic core (2) which is slidably connected inside the stainless steel sleeve (1), a plug (3) which is slidably connected inside the stainless steel sleeve (1) above the magnetic core (2), a cylindrical spring (4) which is sleeved inside the plug (3), a housing (5) which is installed outside the stainless steel sleeve (1), an electromagnetic coil (7) which is wound around the outside of the stainless steel sleeve (1), a valve seat (8) which is fixedly connected to the inner side wall of the stainless steel sleeve (1) below the magnetic core (2), a steel ball (11) which is provided between the valve seat (8) and the magnetic core (2), an air inlet copper pipe (9) which is connected to the outer side wall of the stainless steel sleeve (1), and an air outlet copper pipe (12) which is connected to the bottom of the valve seat (8).

2. The new stainless steel miniature solenoid valve for cost-reducing refrigeration units according to claim 1, characterized in that: The top of the housing (5) and the inside of the plug (3) are threaded with coil screws (6).

3. The new stainless steel miniature solenoid valve for cost reduction in refrigeration units according to claim 1, characterized in that: The air intake copper pipe (9) is equipped with a filter screen (10).

4. The new stainless steel miniature solenoid valve for cost reduction in refrigeration units according to claim 1, characterized in that: The valve seat (8) is made of stainless steel or brass, with stainless steel sleeve (1) Ф8-Ф10, steel ball (11) Ф4-Ф6 and valve seat (8) Ф7-Ф9.

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