Visual pressure electronic quantity liquid adding device

Abstract

The invention discloses a visible pressure electronic quantity liquid adding device, and relates to the field of pressure gauges, the visible pressure electronic quantity liquid adding device comprises a main body shell and an operation panel, an input pipe main body is fixedly installed in the main body shell, and one end of the input pipe main body is fixedly connected with an output pipe main body. The air pressure value in the refrigeration equipment is detected through the pressure sensor module, the main body shell and the handle are held by hand, so that the flow module is activated, the electromagnetic valve and the pump body in the input pipe main body are opened, the electromagnetic valve in the output pipe main body is opened, and Freon in a tank enters a pipeline of the input pipe main body; when the output pipe is nearly saturated, the process control execution module controls the early warning reminding module to give out a warning tone, an operator loosens a handle, fluorine adding is completed, timely detection is carried out while fluorine adding is carried out, the fluorine adding process is simplified, operation is convenient, and the production efficiency is improved. And meanwhile, the fluorine adding safety is also improved.

Description

Technical Field

[0001] This invention relates to the field of pressure gauge technology, specifically to a liquid dispensing device with a visible electronic pressure reading. Background Technology

[0002] Freon is commonly used as a refrigerant, so equipment that requires Freon is usually refrigeration equipment, such as refrigerators, freezers, and air conditioners. In these devices, Freon is used as a refrigerant, achieving the cooling of air or liquid through a cyclical compression and expansion process.

[0003] However, in existing technologies, after long-term use, some of the Freon used as a refrigerant in refrigeration equipment will be consumed, requiring Freon to be added. For refrigeration equipment, this often involves manually connecting a pressure detection device to the refrigeration equipment to detect the amount of Freon missing, then connecting the refrigeration equipment to the tank, and controlling the Freon supply by controlling the tank switch, thereby controlling the amount of Freon added to the refrigeration equipment. This series of Freon adding operations is too cumbersome and complicated, and there is also a risk of Freon leakage. Summary of the Invention

[0004] The purpose of this invention is to provide a visual pressure electronic liquid dispensing device to solve the problems mentioned in the background art, such as the cumbersome and complicated manual fluorine dispensing operation and the risk of Freon leakage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a visual pressure electronic quantity liquid dispensing device, comprising a main body shell and an operation panel, wherein an input tube body is fixedly installed inside the main body shell, an output tube body is fixedly connected to one end of the input tube body, a threaded sleeve is rotatably connected to one end of the main body shell, and a circuit board and a built-in power supply are fixedly installed inside the main body shell; The circuit board is equipped with an early warning module, a process control execution module, a digital display module, a flow calculation module, and a power supply module. The process control execution module is used to control the flow calculation module to quantitatively control the amount of refrigerant added. The end of the main body of the output pipe is provided with a pressure sensor module and an output pipe module. The pressure sensor module is used to detect the gas pressure of the object to which refrigerant is added, and the output pipe module uses a solenoid valve. An input tube module is provided at the end of the main body of the input tube, and the input tube module uses a solenoid valve and a micro pump; The early warning module, the process control execution module, the digital display module, the flow calculation module, the power supply module, the pressure sensor module, the output pipe module, and the input pipe module constitute the liquid addition system.

[0006] A handle is rotatably connected to the outside of the input tube body, and a liquid filling mechanism is provided at the other end of the input tube body. The liquid filling mechanism consists of a frame, a flow module, and a circuit switch assembly. The frame is rotatably connected to the outside of the input tube body, and the flow module and the circuit switch assembly are fixedly installed at the other end of the input tube body.

[0007] Preferably, the power supply module is used to supply power to the liquid addition system, and the process control execution module is electrically connected to the early warning module, the digital display module and the flow calculation module respectively.

[0008] Preferably, the digital display module is electrically connected to the operation panel, and the early warning module is used to remind the operator.

[0009] Preferably, the process control execution module is also electrically connected to the pressure sensor module, the output pipe module, and the input pipe module, respectively. The process control execution module is used to receive the detection signal from the pressure sensor module, and is also used to control the opening and closing of the solenoid valve in the output pipe module and the opening and closing of the solenoid valve and the micro pump in the input pipe module.

[0010] Preferably, the threaded sleeve is located on the outside of the output tube body, and the built-in power supply is electrically connected to the circuit board.

[0011] Preferably, the middle part of the frame abuts against the curved side of the handle, and one end of the frame is rotatably connected to a connecting pin.

[0012] Preferably, a central shaft is sleeved on the middle of the connecting pin, and the central shaft is located at one end of the inner cavity of the input tube body.

[0013] Preferably, a ring block is fixedly connected to the outer side of the central shaft, and a first spring abuts against the other side of the ring block.

[0014] Preferably, the other end of the first spring is fixedly connected to one end of the input tube body, and the other end of the central shaft is fixedly connected to a thin shaft.

[0015] Preferably, the thin shaft has two sets of elliptical grooves on its outer side, and a second spring is fixedly connected to the inner side of each set of elliptical grooves. A sealing ball is fixedly connected to the other end of each set of second springs.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the pressure sensor module detects the gas pressure value in the refrigeration equipment and generates an electrical signal, which is sent to the process control execution module and displayed on the screen in the operation panel. Holding the main body and handle activates the flow module, opening the solenoid valve and pump in the input pipe and the solenoid valve in the output pipe. The refrigerant in the tank enters the pipe of the input pipe, passes through the flow module detection end and the opened channel, and then enters the refrigeration equipment from the output pipe. When it approaches saturation, the process control execution module controls the warning reminder module to issue a prompt sound. The operator releases the handle, and the refrigerant addition is completed. By performing timely detection during refrigerant addition, the refrigerant addition process is simplified, the operation is convenient, and the safety of refrigerant addition is improved.

[0017] 2. In this invention, the main body of the output pipe is inserted into the pipeline of the refrigeration equipment that needs to be refrigerant added, and the threaded sleeve is tightened on the threaded end. Thus, the device is installed on the refrigeration equipment. Compared with the traditional refrigerant adding operation, no additional detection device is needed, so that pressure detection and refrigerant adding can be carried out simultaneously, improving the convenience of refrigerant adding.

[0018] 3. In this invention, by holding the main body shell and the handle, the handle moves in an arc around the connection point with the main body of the input tube, rotating on the outside of the main body of the input tube. The curved side of the handle abuts against the inner protrusion of the frame, causing the frame to move along the length of the main body of the input tube and pull the connecting pin. After the connecting pin is stressed, it drives the central shaft and the thin shaft to slide inside the main body of the input tube. Under the connection of the two sets of second springs, the two sealing balls compress their respective connected second springs and are partially hidden in the elliptical groove. At this time, the two sets of sealing balls are separated from the detection end of the flow module and the channel of the main body of the input tube, respectively. The flow module is activated and the refrigerant charging operation is performed. After receiving the alarm, the handle is released to complete the refrigerant charging, simplifying the process and improving efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a liquid dispensing device with visible pressure electronic quantity according to the present invention; Figure 2 This is a three-dimensional structural diagram of the internal structure of a liquid dispensing device with visible pressure electronic quantity according to the present invention; Figure 3 This is a schematic diagram of the internal planar structure of a liquid dispensing device with visible pressure electron quantity according to the present invention; Figure 4 This is a three-dimensional structural diagram of the liquid addition mechanism in a liquid addition device with visible pressure electronic quantity according to the present invention; Figure 5 This is a three-dimensional structural diagram showing the positional relationship between the frame and the handle in a liquid dispensing device for visual pressure electronic quantity according to the present invention; Figure 6This is a cross-sectional view of the main body of the input tube in a visual pressure electronic quantity liquid dispensing device of the present invention; Figure 7 This is a three-dimensional structural diagram of the circuit switch assembly in a visible pressure electronic liquid dispensing device according to the present invention; Figure 8 This is a block diagram of the liquid addition system in a visible pressure electronic liquid addition device of the present invention.

[0020] In the diagram: 1. Main body shell; 2. Operation panel; 3. Input pipe main body; 31. Input pipe module; 4. Output pipe main body; 41. Pressure sensor module; 42. Output pipe module; 5. Threaded sleeve; 6. Handle; 7. Circuit board; 71. Early warning module; 72. Process control execution module; 73. Digital display module; 74. Flow calculation module; 8. Built-in power supply; 81. Power supply module; 9. Liquid filling mechanism; 91. Bar frame; 92. Flow module; 93. Path switch assembly; 931. Connecting pin; 932. Ring block; 933. Central shaft; 934. First spring; 935. Thin shaft; 936. Elliptical groove; 937. Sealing ball; 938. Second spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0022] Reference Figure 1-8 As shown: A visual pressure electronic liquid dispensing device includes a main body shell 1 and an operation panel 2. An input tube body 3 is fixedly installed inside the main body shell 1. An output tube body 4 is fixedly connected to one end of the input tube body 3. A threaded sleeve 5 is rotatably connected to one end of the main body shell 1. A circuit board 7 and a built-in power supply 8 are fixedly installed inside the main body shell 1. The circuit board 7 is equipped with an early warning module 71, a process control execution module 72, a digital display module 73, a flow calculation module 74, and a power supply module 81. The process control execution module 72 is used to control the flow calculation module 74 to quantitatively control the amount of refrigerant added. The end of the output pipe body 4 is equipped with a pressure sensor module 41 and an output pipe module 42. The pressure sensor module 41 is used to detect the gas pressure of the object to be refrigerant added. A solenoid valve is used in the output pipe module 42. The end of the input pipe body 3 is equipped with an input pipe module 31. The input pipe module 31 uses a solenoid valve and a micro pump. The early warning module 71, the process control execution module 72, the digital display module 73, the flow calculation module 74, the power supply module 81, the pressure sensor module 41, the output pipe module 42, and the input pipe module 31 constitute the liquid addition system.

[0023] A handle 6 is rotatably connected to the outside of the input tube body 3. A liquid filling mechanism 9 is provided at the other end of the input tube body 3. The liquid filling mechanism 9 consists of a frame 91, a flow module 92 and a circuit switch assembly 93. The frame 91 is rotatably connected to the outside of the input tube body 3. The flow module 92 and the circuit switch assembly 93 are fixedly installed at the other end of the input tube body 3. The power module 81 is used to supply power to the liquid addition system and can also be charged through the interface. The process control execution module 72 is electrically connected to the early warning module 71, the digital display module 73 and the flow calculation module 74 respectively. The digital display module 73 is used to be electrically connected to the operation panel 2. The early warning module 71 is used to remind the operator. The process control execution module 72 is also electrically connected to the pressure sensor module 41, the output pipe module 42 and the input pipe module 31 respectively. The process control execution module 72 is used to receive the detection signal from the pressure sensor module 41. The process control execution module 72 is also used to control the opening and closing of the solenoid valve in the output pipe module 42 and the opening and closing of the solenoid valve and the micro pump in the input pipe module 31.

[0024] In this embodiment, when refrigerant needs to be added, the switch on the operation panel 2 is turned on, connecting the input pipe body 3 to the refrigerant tank. The pressure sensor module 41 detects the gas pressure value in the refrigeration equipment and generates an electrical signal, which is sent to the process control execution module 72. The relevant detection value and the refrigerant addition difference are displayed on the display screen of the operation panel 2 via the digital display module 73. After confirming the amount of refrigerant to be added, the operator holds the main body shell 1 and the handle 6, which activates the flow module 92 and sends a signal to the flow calculation module 74. The process control execution module 72 controls the solenoid valve and pump in the input pipe body 3 and the solenoid valve in the output pipe body 4 to open, releasing the refrigerant from the tank. Refrigerant enters the pipe of the input pipe body 3, passes through the detection end of the flow module 92 and the open channel, and then enters the refrigeration equipment through the output pipe body 4. As external refrigerant is added, the pressure sensor module 41 continuously detects and sends signals to the process control execution module 72. When it approaches saturation, the process control execution module 72 controls the early warning reminder module 71 to issue a prompt sound. The operator releases the handle 6, and the two sets of sealing balls 937 respectively re-block the detection end of the flow module 92 and the channel of the input pipe body 3, thus completing the refrigerant addition. By performing timely detection while adding refrigerant, the refrigerant addition process is simplified, the operation is convenient, and the safety of refrigerant addition is also improved. Example 2

[0025] according to Figure 1-3 As shown, an input tube body 3 is fixedly installed inside the main body shell 1. An output tube body 4 is fixedly connected to one end of the input tube body 3. A threaded sleeve 5 is rotatably connected to one end of the main body shell 1. The threaded sleeve 5 is located outside the output tube body 4. The built-in power supply 8 is electrically connected to the circuit board 7.

[0026] In this embodiment, the main body 4 of the output pipe is inserted into the pipeline of the refrigeration equipment that needs to be refrigerant added, and the threaded sleeve 5 is tightened onto the threaded end. Thus, the device is installed on the refrigeration equipment. Compared with the traditional refrigerant adding operation, no additional detection device is needed, so that pressure detection and refrigerant adding can be carried out simultaneously, improving the convenience of refrigerant adding. Example 3

[0027] according to Figure 4-7As shown, the middle part of the frame 91 abuts against the curved side of the handle 6. One end of the frame 91 is rotatably connected to a connecting pin 931. A central shaft 933 is sleeved in the middle of the connecting pin 931. The central shaft 933 is placed at one end of the inner cavity of the input tube body 3. A ring block 932 is fixedly connected to the outside of the central shaft 933. The other side of the ring block 932 abuts against a first spring 934. The other end of the first spring 934 is fixedly connected to one end of the input tube body 3. A thin shaft 935 is fixedly connected to the other end of the central shaft 933. Two sets of elliptical grooves 936 are opened on the outside of the thin shaft 935. A second spring 938 is fixedly connected to the inside of each set of elliptical grooves 936. A sealing ball 937 is fixedly connected to the other end of each set of second springs 938.

[0028] In this embodiment, by holding the main body shell 1 and the handle 6, the handle 6 moves in an arc around the connection point with the input tube body 3, rotating on the outside of the input tube body 3. The curved side of the handle 6 abuts against the inner protrusion of the frame 91, causing the frame 91 to move along the length of the input tube body 3 and pull the connecting pin 931. After being stressed, the connecting pin 931 drives the central shaft 933 and the thin shaft 935 to slide inside the input tube body 3. Under the connection of the two sets of second springs 938, the two sealing balls 937 compress their respective connected second springs 938 and are partially hidden in the elliptical groove 936. At this time, the two sets of sealing balls 937 are separated from the detection end of the flow module 92 and the channel of the input tube body 3, respectively. The flow module 92 is activated and performs the refrigerant charging operation. After receiving the alarm, releasing the handle 6 completes the refrigerant charging, simplifying the process and improving efficiency.

[0029] The usage method and working principle of this device: When using this visual pressure electronic liquid dispensing device, insert the main body 4 of the output pipe into the pipeline of the refrigeration equipment that needs to be added with refrigerant, and tighten it on the threaded end through the threaded sleeve 5, thereby installing it on the refrigeration equipment. When refrigerant needs to be added, turn on the switch on the operation panel 2, connect the input pipe body 3 to the refrigerant tank, the pressure sensor module 41 detects the gas pressure value in the refrigeration equipment, and generates an electrical signal to send to the process control execution module 72. The relevant detection value and refrigerant addition difference are displayed on the display screen in the operation panel 2 through the digital display module 73. After confirming the amount of refrigerant added, the operator holds the main body shell 1 and the handle 6. The handle 6 moves in an arc around the connection point with the input pipe body 3, rotating on the outside of the input pipe body 3. The curved side of the handle 6 abuts against the inner protrusion of the frame 91, causing the frame 91 to move along the length of the input pipe body 3 and pull the connecting pin 931. After the connecting pin 931 is under force, it drives the central shaft 933 and the thin shaft 935 to slide inside the input pipe body 3. Under the connection of the two sets of second springs 938, the two sealing balls 937 compress their respective connected second springs 938 and are partially hidden in the elliptical groove 936. At this time, the two sets of sealing balls 937 are separated from the detection end of the flow module 92 and the channel of the input pipe body 3, respectively. At this time, the flow module 92 is activated and sends a signal to the flow calculation module 74. The process control execution module 72 controls the solenoid valve and pump body in the input pipe body 3 to open, as well as the solenoid valve in the output pipe body 4 to open. The Freon in the tank enters the pipe of the input pipe body 3, passes through the detection end of the flow module 92 and the opened channel, and enters the refrigeration equipment from the output pipe body 4. As external Freon is replenished, the pressure sensor module 41 continuously detects and sends a signal to the process control execution module 72. When it is close to saturation, the process control execution module 72 controls the early warning reminder module 71 to issue a prompt sound. The operator releases the handle 6, and the two sets of sealing balls 937 respectively re-block the detection end of the flow module 92 and the channel of the input pipe body 3, thus completing the Freon addition.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A visual pressure electronic liquid dispensing device, comprising a main body shell (1) and an operation panel (2), characterized in that: An input tube body (3) is fixedly installed inside the main body shell (1). An output tube body (4) is fixedly connected to one end of the input tube body (3). A threaded sleeve (5) is rotatably connected to one end of the main body shell (1). A circuit board (7) and a built-in power supply (8) are fixedly installed inside the main body shell (1). The circuit board (7) is equipped with an early warning module (71), a process control execution module (72), a digital display module (73), a flow calculation module (74), and a power supply module (81). The process control execution module (72) is used to control the flow calculation module (74) to quantitatively control the amount of refrigerant added. The end of the output pipe body (4) is provided with a pressure sensor module (41) and an output pipe module (42). The pressure sensor module (41) is used to detect the gas pressure of the added fluorine object, and the output pipe module (42) uses a solenoid valve. An input tube module (31) is provided at the end of the input tube body (3), and an electromagnetic valve and a micro pump are used in the input tube module (31); The early warning module (71), the process control execution module (72), the digital display module (73), the flow calculation module (74), the power supply module (81), the pressure sensor module (41), the output pipe module (42), and the input pipe module (31) constitute a liquid addition system; A handle (6) is rotatably connected to the outside of the input tube body (3). A liquid filling mechanism (9) is provided at the other end of the input tube body (3). The liquid filling mechanism (9) consists of a frame (91), a flow module (92), and a circuit switch assembly (93). The frame (91) is rotatably connected to the outside of the input tube body (3). The flow module (92) and the circuit switch assembly (93) are fixedly installed at the other end of the input tube body (3).

2. The visual pressure electronic quantity liquid dispensing device according to claim 1, characterized in that: The power module (81) is used to supply power to the liquid addition system, and the process control execution module (72) is electrically connected to the early warning module (71), the digital display module (73) and the flow calculation module (74) respectively.

3. The visual pressure electronic quantity liquid dispensing device according to claim 2, characterized in that: The digital display module (73) is used to be electrically connected to the operation panel (2), and the early warning module (71) is used to remind the operator.

4. The visual pressure electronic quantity liquid dispensing device according to claim 3, characterized in that: The process control execution module (72) is also electrically connected to the pressure sensor module (41), the output pipe module (42), and the input pipe module (31), respectively. The process control execution module (72) is used to receive the detection signal from the pressure sensor module (41). The process control execution module (72) is also used to control the opening and closing of the solenoid valve in the output pipe module (42) and the opening and closing of the solenoid valve and the micro pump in the input pipe module (31).

5. The visual pressure electronic quantity liquid dispensing device according to claim 1, characterized in that: The threaded sleeve (5) is located on the outside of the output tube body (4), and the built-in power supply (8) is electrically connected to the circuit board (7).

6. The visual pressure electronic quantity liquid dispensing device according to claim 1, characterized in that: The middle part of the frame (91) abuts against the curved side of the handle (6), and one end of the frame (91) is rotatably connected to a connecting pin (931).

7. A visual pressure electronic quantity liquid dispensing device according to claim 6, characterized in that: A central shaft (933) is sleeved in the middle of the connecting pin (931), and the central shaft (933) is placed at one end of the inner cavity of the input tube body (3).

8. The visual pressure electronic quantity liquid dispensing device according to claim 7, characterized in that: A ring block (932) is fixedly connected to the outside of the central shaft (933), and a first spring (934) abuts against the other side of the ring block (932).

9. A visual pressure electronic quantity liquid dispensing device according to claim 8, characterized in that: The other end of the first spring (934) is fixedly connected to one end of the input tube body (3), and the other end of the central shaft (933) is fixedly connected to a thin shaft (935).

10. A visual pressure electronic quantity liquid dispensing device according to claim 9, characterized in that: The thin shaft (935) has two sets of elliptical grooves (936) on its outer side. A second spring (938) is fixedly connected to the inner side of each set of elliptical grooves (936), and a sealing ball (937) is fixedly connected to the other end of each set of second springs (938).

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