Electromagnetic pneumatic switch control assembly of cooling-water machine

Abstract

The utility model discloses an electromagnetic pneumatic switch control assembly of a cooling-water machine, and particularly relates to the technical field of refrigeration controllers, which can respectively control whether circulating liquid in the cooling-water machine of a freezing controller is internally circulated or externally circulated so as to meet the cooling requirements of workshop equipment under different conditions. The problem that an electromagnetic coil of a traditional water and electricity integrated electromagnetic valve is prone to being damaged due to low temperature is solved, the stability and reliability of equipment are improved, an electromagnetic part is installed in the normal-temperature environment on the upper portion of a controller electric box and does not make direct contact with the low temperature, and the service life of the valve is prolonged; the design is ingenious, control is accurate, an operator stands on a workshop machining equipment operation table, opening and closing of the electromagnetic valve can be controlled through the knob switch with the extension line, operation is convenient and fast, the working efficiency is improved, the working state is good, the replacement frequency of the electromagnetic coil is reduced, cost is reduced, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration controller technology, specifically to an electromagnetic pneumatic switch control assembly for a chiller. Background Technology

[0002] The chiller controller is a cooling device that can cool liquids from room temperature to around 0℃ to -40℃. The cooled liquid is then circulated internally or externally by a water pump. Internal circulation refers to the process of circulating the liquid within the controller for cooling, while external circulation involves outputting the cooled liquid to the chiller surface for further cooling, which can be used to cool various injection molding equipment and large processing equipment. This process requires opening and closing several valves.

[0003] Traditionally, a manual valve is added after the freezing controller. When cold water circulation is needed, the worker walks to the outlet at the back of the freezing controller and turns the valve to control whether the sub-zero circulating fluid circulates to the load (freezing tray, mold). This method is relatively inefficient. A separate electromagnetic switch integrated with the valve can also be used. However, with this structure, because the circulating fluid inside the valve needs to pass through a temperature of around -40°C, frost will form on the surface of the electromagnetic coil. When the frost melts, it turns into water. Electromagnetic coils usually do not have good waterproof performance. When the water formed after the frost melts adheres to the electromagnetic coil, it will gradually seep into the coil or accumulate at the connection between the coil and other components. The presence of water will cause the electrical performance of the electromagnetic coil to deteriorate, which may cause short circuits, leakage and other problems, thereby damaging the electromagnetic coil and requiring replacement.

[0004] In factories, chiller controllers are placed next to equipment such as CNC machining centers, grinding machines, injection molding machines, and laser cutting machines to cool the corresponding parts and meet production needs. These devices typically occupy an area of ​​3 to 10 cubic meters. Because factories usually have limited space, chiller controllers are placed behind or to the side of large equipment. In the original structure, workers had to walk to the back of the chiller controller to turn on the valve, which required a one-way trip of about 2 to 10 meters to complete the operation. The frequency of valve opening and closing depends on the production schedule, usually ranging from 1 to 30 minutes, which greatly affects work efficiency.

[0005] To address the above issues, we propose an electromagnetic pneumatic switch control assembly for a chiller. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows:

[0009] A chiller electromagnetic pneumatic switch control assembly includes a chiller body, which includes an outer frame. An air pump and a water pump for coolant flow are installed within the outer frame. A solenoid valve is installed in the air pump's pipeline. A pneumatic water valve is installed in the water pump's flow pipeline. The pneumatic water valve includes an assembly pipe, with an assembly base fixedly connected to its middle section. The assembly base has a ball groove inside, and connecting windows on both sides of the ball groove. A stopper ball is installed in the ball groove, and a rotating roller is fixedly connected to the top of the stopper ball. An assembly window is opened on the top of the assembly base. One end of the rotating roller extends through the assembly base into the assembly window. A moving plate is fixedly connected to one end of the rotating roller inside the assembly window. A guide ring is sleeved on the surface of the moving plate. One side of the inner wall of the assembly window communicates with the solenoid valve pipeline, and the other side of the inner wall of the assembly window has an exhaust hole. A return spring is sleeved on the surface of the guide ring near the exhaust hole.

[0010] Preferably, the connecting windows on both sides are symmetrically distributed along the axis of the mounting base, the ball groove is connected to the assembly pipe through the connecting windows, and an exhaust valve is fixedly connected to one side of the assembly window.

[0011] Preferably, a rotary switch for controlling the opening and closing of the solenoid valve is installed on one side of the outer frame, an extension cable is fixedly connected to the bottom of the rotary switch, and a pneumatic water valve is fixedly connected to the output end of the solenoid valve.

[0012] Preferably, the ball is rotatably connected to the inner wall of the ball groove, and the surface of the ball is provided with a drainage hole that penetrates itself.

[0013] Preferably, the motion plate is slidably connected to the inner wall of the assembly window, and a sealing strip is fitted around the perimeter of the motion plate.

[0014] Preferably, the two ends of the guide ring are fixedly connected to the two sides of the inner wall of the assembly window, the moving plate is slidably connected to the guide ring, and a sealing seat is sleeved at the contact point between the moving plate and the guide ring.

[0015] Preferably, the top of the assembly base is fixedly connected to a sealing plate for closing the assembly window.

[0016] Preferably, one end of the reset spring contacts the inner wall of the assembly window, and the other end of the reset spring contacts the moving plate.

[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: Utility Model Content

[0018] I. Functional Design Aspects

[0019] Precise control of circulation mode: It can control whether the circulating liquid in the chiller of the freezer is in internal or external circulation, so as to meet the cooling needs of workshop equipment under different conditions.

[0020] High reliability of pneumatic control: The use of pneumatic control solves the problem of easy damage to the electromagnetic coil of traditional hydroelectric integrated solenoid valves due to low temperature, thus improving the stability and reliability of the equipment.

[0021] II. Structural Design Aspects

[0022] Electromagnetic and water circuit separation: The electromagnetic part is installed in a normal temperature environment on the upper part of the controller box, and will not be in direct contact with low temperature, thus extending the service life of the valve.

[0023] Unique pneumatic water valve structure: The air pump squeezes the moving plate to drive the stopper ball to rotate, so that the water circuit is connected when the drain hole and the connecting window coincide. The design is ingenious and the control is precise.

[0024] III. User Experience

[0025] Easy to operate: Operators can control the opening and closing of the solenoid valve by standing on the workshop processing equipment control panel and using a knob switch with an extension cord. The operation is convenient and quick, improving work efficiency.

[0026] Low after-sales maintenance costs: The improved control method has undergone thousands of repeated switching tests in the factory and has been verified by customer factory use. It works well, reducing the frequency of electromagnetic coil replacement and lowering after-sales maintenance costs for customers and the company. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0029] Figure 3 This is a schematic diagram of the internal structure of the assembly tube of this utility model.

[0030] Figure 4 This is a schematic diagram of the top structure of the assembly base of this utility model.

[0031] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0032] Figure 6 This is a schematic diagram of the exhaust port location structure of this utility model.

[0033] In the diagram: 1. Chiller body; 101. Outer frame; 102. Air pump; 103. Solenoid valve; 104. Rotary switch; 105. Extension cord; 106. Water pump; 2. Pneumatic water valve; 201. Assembly pipe; 202. Assembly base; 203. Ball groove; 204. Connecting window; 205. Stopper ball; 206. Drain hole; 207. Rotating roller; 208. Assembly window; 209. Moving plate; 210. Guide ring; 211. Sealing strip; 212. Sealing seat; 213. Return spring; 214. Exhaust hole; 215. Sealing plate; 216. Exhaust valve. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example: Figures 1-6 As shown, this utility model provides an electromagnetic pneumatic switch control assembly for a chiller, including a chiller body 1. The chiller body 1 includes an outer frame 101. An air pump 102 and a water pump 106 for coolant flow are installed inside the outer frame 101. A solenoid valve 103 is installed in the pipeline of the air pump 102. A rotary switch 104 for controlling the opening and closing of the solenoid valve 103 is installed on one side of the outer frame 101. An extension cable 105 is fixedly connected to the bottom of the rotary switch 104. A pneumatic water valve 2 is fixedly connected to the output end of the solenoid valve 103. The pneumatic water valve 2 is installed in the flow pipeline of the water pump 106. By opening or closing the rotary switch 104 with the extension cable 105, the positive pressure gas of the two sets of solenoid valves 103 is controlled. The solenoid valve 103 is connected to the normally closed pneumatic water valve 2. The operator stands on the processing equipment control panel in the workshop and controls the opening and closing of the rotary switch 104. When the rotary switch 104 is turned on, the solenoid valve 103 is energized, and the combined solenoid valve 103 opens. The solenoid valve 103 is connected to an air pump 102. When the solenoid valve 103 is open, the positive pressure air source will be supplied to the pneumatic water valve 2, which will open and the water can circulate. The power to drive the water circulation is a water pump 106. This allows the operator to control whether the circulating liquid in the chiller of the freezer is circulated internally or externally to cool the equipment in the workshop and meet the processing requirements. Because the electromagnetic part and the water circuit part are separated, the electromagnetic part does not directly contact the low temperature. It is installed on the upper part of the controller electrical box in a normal temperature environment, so the valve has a longer service life.

[0036] The pneumatic water valve 2 includes an assembly pipe 201, with an assembly base 202 fixedly connected to the middle of the assembly pipe 201. A ball groove 203 is formed inside the assembly base 202, and connecting windows 204 are formed on both sides of the ball groove 203. The connecting windows 204 are symmetrically distributed along the axis of the assembly base 202. The ball groove 203 communicates with the assembly pipe 201 through the connecting windows 204. A stopper ball 205 is installed inside the ball groove 203, and the stopper ball 205 is rotatably connected to the inner wall of the ball groove 203. The surface of the assembly 205 has a through-hole drainage hole 206. A rotating roller 207 is fixedly connected to the top of the ball 205. An assembly window 208 is opened on the top of the assembly base 202. One end of the rotating roller 207 extends through the assembly base 202 into the assembly window 208. A moving plate 209 is fixedly connected to one end of the rotating roller 207 inside the assembly window 208. The moving plate 209 is slidably connected to the inner wall of the assembly window 208. A guide ring 210 is sleeved on the surface of the moving plate 209. Both ends of the guide ring 210 are fixedly connected to the two sides of the inner wall of the assembly window 208. The moving plate 209 is slidably connected to the guide ring 210. A sealing seat 212 is sleeved at the contact point between the moving plate 209 and the guide ring 210. A sealing strip 211 is sleeved around the moving plate 209. One side of the inner wall of the assembly window 208 is connected to the pipeline of the solenoid valve 103. An exhaust hole 214 is opened on the other side of the inner wall of the assembly window 208. A return spring 213 is sleeved on the surface of the guide ring 210 near the exhaust hole 214. One end of the return spring 213 contacts the inner wall of the assembly window 208, and the other end of the return spring 213 contacts the moving plate 209. The top of the assembly base 202 is fixedly connected to a closing plate 215 for closing the assembly window 208. The air pump 102 enters the assembly window 208 and squeezes the moving plate 209 to rotate around the rotating roller 207, thereby driving the stopper ball 205 to rotate. After the drain hole 206 of the stopper ball 205 coincides with the connecting window 204 of the pipe, the water passage can be connected.

[0037] When it is necessary to close, by stopping the operation of the air pump 102, the exhaust valve 216 fixedly connected to one side of the assembly window 204 opens, and its moving plate 209 moves under the drive of the return spring 213, squeezing the gas in the assembly window 208. The gas is discharged through the exhaust valve 216, which in turn drives the stopper ball 205 to rotate. After the drain hole 206 of the stopper ball 205 no longer coincides with the connecting window 204 of the pipe, the water circuit can be closed.

[0038] The pneumatic control solution addresses the issue of the electromagnetic coil in the traditional integrated water and electricity solenoid valve 103 being easily damaged by low temperatures. Our company previously manufactured manual valves, and this control method was widely used in the industry; however, customer feedback indicated inconvenience and low efficiency. The solution was later improved to an integrated electromagnetic water circuit control, significantly enhancing convenience. Approximately 150 chiller units with this integrated electromagnetic water circuit control were shipped. However, customer use and technical personnel testing revealed that the electromagnetic coil in the integrated control required replacement on average every two months, causing significant inconvenience for both customers and our after-sales service. The current solution uses an electromagnetic-driven pneumatic circuit, which in turn drives the water circuit. Through continuous operation in the factory and 1000 repeated opening and closing tests, the valve's performance is excellent. Approximately 50 improved chiller units with separate control valves are performing well in customer factories.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A chiller electromagnetic pneumatic switch control assembly, characterized in that, The system includes a chiller body (1), which includes an outer frame (101). An air pump (102) and a water pump (106) for coolant flow are installed inside the outer frame (101). A solenoid valve (103) is installed in the pipeline of the air pump (102). A pneumatic water valve (2) is installed in the flow pipeline of the water pump (106). The pneumatic water valve (2) includes an assembly pipe (201). An assembly base (202) is fixedly connected to the middle of the assembly pipe (201). A ball groove (203) is opened inside the assembly base (202). A connecting window (204) is opened on both sides of the ball groove (203). A stopper ball (205) is installed inside the ball groove (203). 205) A rotating roller (207) is fixedly connected to the top. An assembly window (208) is opened on the top of the assembly base (202). One end of the top of the rotating roller (207) extends through the assembly base (202) into the assembly window (208). A moving plate (209) is fixedly connected to one end of the rotating roller (207) inside the assembly window (208). A guide ring (210) is sleeved on the surface of the moving plate (209). One side of the inner wall of the assembly window (208) is connected to the pipeline of the solenoid valve (103). An exhaust hole (214) is opened on the other side of the inner wall of the assembly window (208). A return spring (213) is sleeved on the surface of the guide ring (210) near the exhaust hole (214).

2. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, The connecting windows (204) on both sides are symmetrically distributed along the axis of the mounting base (202). The ball groove (203) is connected to the mounting pipe (201) through the connecting window (204). An exhaust valve (216) is fixedly connected to one side of the mounting window (208).

3. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, A rotary switch (104) for controlling the opening and closing of the solenoid valve (103) is installed on one side of the outer frame (101). An extension line (105) is fixedly connected to the bottom of the rotary switch (104). A pneumatic water valve (2) is fixedly connected to the output end of the solenoid valve (103).

4. The electromagnetic pneumatic switch control assembly for a chiller according to claim 1, characterized in that, The ball (205) is rotatably connected to the inner wall of the ball groove (203), and the surface of the ball (205) is provided with a drainage hole (206) that penetrates itself.

5. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, The motion plate (209) is slidably connected to the inner wall of the assembly window (208), and a sealing strip (211) is fitted around the motion plate (209).

6. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, The guide ring (210) is fixedly connected to both ends of the inner wall of the assembly window (208), the moving plate (209) is slidably connected to the guide ring (210), and a sealing seat (212) is sleeved at the contact point between the moving plate (209) and the guide ring (210).

7. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, The top of the assembly base (202) is fixedly connected to a sealing plate (215) for closing the assembly window (208).

8. The chiller electromagnetic pneumatic switch control assembly according to claim 1, characterized in that, One end of the reset spring (213) contacts the inner wall of the assembly window (208), and the other end of the reset spring (213) contacts the moving plate (209).

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