A new brass body material and a practical small electromagnetic valve matched with the whole machine power
By adopting a new type of brass body material and a power-adaptive design, combined with a hard-seal structure, the problem of excessive flow in existing solenoid valves has been solved, enabling precise control of small-flow refrigerant, improving equipment durability and operating efficiency, reducing production costs, and broadening the application range.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TIANHAO REFRIGERATING EQUIP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-24
AI Technical Summary
Existing solenoid valves for refrigeration do not take into account the adaptability to the power and functional complexity of the whole machine, resulting in excessive flow and inability to accurately control the cooling capacity, leading to low operating efficiency, high energy consumption, and incompatibility with low-power equipment.
It adopts a new type of brass body material and a design that is compatible with the power of the whole machine. Combined with a hard seal structure, it achieves micro-flow control through the cooperation of magnetic core and steel ball, and precisely controls the flow of refrigerant. It uses special brass material and stainless steel ball to form a stable seal.
It enables precise control of small-flow refrigerant, improves equipment durability and control accuracy, reduces production costs, broadens the application range, and improves the operating efficiency of the refrigeration system.
Smart Images

Figure CN224550914U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solenoid valve technology, specifically to a novel brass body material and a practical small solenoid valve that is compatible with the power of the whole machine. Background Technology
[0002] Existing solenoid valves for refrigeration are mostly designed based on the industry standard "JB / T4119-2013 Solenoid Valves for Refrigeration," without considering their compatibility with the overall power and functional complexity of the device. These solenoid valves suffer from excessive flow rates, making it impossible to accurately control the cooling capacity of low-power devices such as ice makers and ice cream machines. They also fail to meet the precise control requirements of micro-flow refrigeration systems for refrigerant on / off, resulting in low overall operating efficiency and high energy consumption. Furthermore, they are unsuitable for low-power, single-function devices such as household ice makers. Therefore, this paper proposes a novel small solenoid valve combining a brass body material with a practical design that is compatible with the overall power of the device. Utility Model Content
[0003] In view of this, the present invention provides a novel brass body material and a practical combination of a small solenoid valve adapted to the power of the whole machine, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.
[0004] The technical solution of this utility model is achieved as follows: a novel brass body material and a practical small solenoid valve adapted to the power of the whole machine, including a brass valve body, a stainless steel sleeve installed on the top of the brass valve body, a magnetic core slidably connected to the inner side wall of the stainless steel sleeve, a cylindrical spring installed inside the magnetic core, a plug installed on the top of the stainless steel sleeve, the top of the cylindrical spring being fixedly connected to the plug, a housing installed on the outer side wall of the stainless steel sleeve, an electromagnetic coil wound inside the housing on the outer side wall of the stainless steel sleeve, a steel ball installed at the bottom of the magnetic core, an air inlet copper pipe connected to the air inlet end of the brass valve body, and an air outlet copper pipe connected to the air outlet end of the brass valve body.
[0005] More preferably, the inner wall of the plug and the top of the housing are threadedly connected with fastening bolts.
[0006] The present invention has the following advantages due to the adoption of the above technical solution:
[0007] I. This utility model designs the valve port diameter of the brass body to be 1.9-2.0mm, and forms a hard seal with a 4-6mm steel ball and special brass material, which can accurately control the passage of small flow refrigerant. It is perfectly adapted to the refrigeration system of ice makers, ice cream machines and other machines with low overall power and micro-flow control, and solves the problem of inaccurate refrigeration control caused by excessive flow of existing solenoid valves.
[0008] Second, the hard-seal structure of the specially made brass material and stainless steel ball of this utility model ensures a stable and reliable sealing surface and long-term effective internal leakage performance; at the same time, the combination of materials has little wear during frequent switching, so that the life of the solenoid valve can reach more than 300,000 cycles, improving the durability of the equipment.
[0009] Third, the use of specially made brass material in this utility model enables the first-pass yield to reach over 99.5% in the production process, reducing production costs and rework rates, and facilitating large-scale production.
[0010] Fourth, through structural design and material combination, this utility model achieves precise adaptation with complete machines of different power, broadens the application range of solenoid valves in various refrigeration equipment such as air conditioners and dehumidifiers, and improves the automatic control accuracy and operating efficiency of refrigeration systems.
[0011] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a structural diagram of the present invention;
[0014] Figure 2 This is a cross-sectional view of the present invention in the power-off state;
[0015] Figure 3 This is a cross-sectional view of the present invention in the energized state.
[0016] Reference numerals: 1. Brass valve body; 2. Stainless steel sleeve; 3. Magnetic core; 4. Cylindrical spring; 5. Plug; 6. Housing; 7. Fastening bolt; 8. Electromagnetic coil; 9. Steel ball; 10. Inlet copper pipe; 11. Outlet copper pipe. Detailed Implementation
[0017] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0018] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0019] like Figure 1-3 As shown, this utility model embodiment provides a novel brass body material and a practical small solenoid valve that is compatible with the overall power. It includes a brass valve body 1, a stainless steel sleeve 2 installed on the top of the brass valve body 1, a magnetic core 3 slidably connected to the inner side wall of the stainless steel sleeve 2, a cylindrical spring 4 installed inside the magnetic core 3, a plug 5 installed on the top of the stainless steel sleeve 2, the top of the cylindrical spring 4 being fixedly connected to the plug 5, a housing 6 installed on the outer side wall of the stainless steel sleeve 2, an electromagnetic coil 8 wound around the outer side wall of the stainless steel sleeve 2 inside the housing 6, a steel ball 9 installed at the bottom of the magnetic core 3, an air inlet copper pipe 10 connected to the air inlet end of the brass valve body 1, and an air outlet copper pipe 11 connected to the air outlet end of the brass valve body 1.
[0020] In one embodiment, the inner wall of the plug 5 and the top of the housing 6 are threadedly connected by fastening bolts 7.
[0021] When this utility model is in operation: When the electromagnetic coil 8 is not energized, it does not generate a magnetic field. The elastic force of the cylindrical spring 4 pushes the magnetic core 3 downward. The steel ball 9 at the bottom of the magnetic core 3 is tightly sealed with the brass valve body 1 (hard seal), blocking the passage between the inlet copper pipe 10 and the outlet copper pipe 11. The refrigerant cannot flow through the solenoid valve, and the solenoid valve does not participate in the refrigeration cycle. When the electromagnetic coil 8 is energized, it generates a magnetic field. The magnetic field force overcomes the elastic force of the cylindrical spring 4 and attracts the magnetic core 3 upward. The magnetic core 3 is attracted to the plane of the plug 5, and the steel ball 9 separates from the sealing part of the brass valve body 1. The high-pressure refrigerant in the inlet copper pipe 10 flows through the internal channel of the brass valve body 1 to the outlet copper pipe 11 and enters the refrigeration cycle, realizing the passage control of the refrigeration system. When the electromagnetic coil 8 is de-energized again, the magnetic field force disappears, the elastic force of the cylindrical spring 4 pushes the magnetic core 3 to reset, the steel ball 9 re-seals with the brass valve body 1, the solenoid valve returns to the closed state, exits the refrigeration cycle, and completes one on / off control process.
[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A novel brass body material and a practical small solenoid valve adapted to the overall power of the machine, characterized in that: The device includes a brass valve body (1), a stainless steel sleeve (2) installed on the top of the brass valve body (1), a magnetic core (3) slidably connected to the inner wall of the stainless steel sleeve (2), a cylindrical spring (4) installed inside the magnetic core (3), a plug (5) installed on the top of the stainless steel sleeve (2), the top of the cylindrical spring (4) being fixedly connected to the plug (5), a housing (6) installed on the outer wall of the stainless steel sleeve (2), an electromagnetic coil (8) wound around the outer wall of the stainless steel sleeve (2) inside the housing (6), a steel ball (9) installed at the bottom of the magnetic core (3), an air inlet copper pipe (10) connected to the air inlet end of the brass valve body (1), and an air outlet copper pipe (11) connected to the air outlet end of the brass valve body (1).
2. The novel brass body material and the practically compatible miniature solenoid valve adapted to the overall power of the machine, as described in claim 1, are characterized in that: The inner wall of the plug (5) and the top of the housing (6) are threadedly connected by fastening bolts (7).