Linked switch structure of refrigerant filling device

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides a linked switch structure of a refrigerant filling device, which comprises a filling shell, an operating handle, a control valve and a digital display module, a valve rod is arranged at the upper end of the control valve, a refrigerant inlet is arranged at the lower end of the control valve, a refrigerant outlet is arranged on the peripheral side of the control valve, and a transmission part is arranged on the operating handle and matched with the valve rod. A transmission contact is arranged on the portion, matched with the microswitch, of the peripheral face of the operation handle, the microswitch is electrically connected with the digital display module, when the operation handle acts along the hinge shaft, the transmission part and the transmission contact can synchronously move from top to bottom and abut against the valve rod and the microswitch respectively, opening and closing conversion is achieved, and the state of the control valve is reflected in real time. The device is compact and stable in structure, convenient to install, visual and accurate to operate and rapid and reliable in response, a refrigerant inlet is effectively isolated, the leakage risk is reduced, and the safety and efficiency of the refrigerant filling process are integrally improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refrigeration equipment technical field especially relates to a linkage switch structure of refrigerant filling device. BACKGROUND

[0002] With the development of refrigeration industry, refrigerant filling device plays a vital role in the maintenance of refrigeration equipment, and the linkage switch structure is the key control component for controlling the refrigerant filling process.

[0003] In the existing refrigerant filling device, the linkage switch and the control valve are not close enough, which leads to misoperation during the filling process. At the same time, there is a lack of more intuitive and stable control linkage feedback structure, so that the operator can not stabilize the filling process and accurately judge the state of the control valve. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems existing in the prior art and provides a linkage switch structure of refrigerant filling device.

[0005] The utility model discloses a linkage switch structure of refrigerant filling device, including filling shell, operating handle and control valve, the operating handle is hinged with filling shell, the control valve is fixed in the space formed by filling shell and operating handle, the control valve upper end is equipped with the valve stem for opening or closing the refrigerant flow path, the operating handle is equipped with the transmission part that cooperates with the valve stem, the control valve lower extreme is equipped with the refrigerant import, and the control valve peripheral side is equipped with the refrigerant export, and the one side fixed of control valve has micro -switch, and the part that operating handle outer peripheral surface cooperates with micro -switch is equipped with transmission contact, and filling shell is equipped with the digital display module for showing the control valve state, and micro -switch is electrically connected with digital display module, when operating handle moves along the hinged shaft, transmission part and transmission contact can move from top to bottom synchronously and respectively with valve stem and micro -switch and abut.

[0006] Preferably, the operating handle side is provided with a notch matched with the outer peripheral surface of the micro -switch, and the transmission contact is arranged on the notch.

[0007] Preferably, the micro -switch is arranged in an upward inclination relative to the horizontal direction.

[0008] Preferably, the filling shell includes left and right symmetrically arranged left and right shells, the left and right shells are connected after being buckled and form a ring-shaped clamping groove on the inner wall thereof, and the control valve is circumferentially developed with a bearing platform capable of being clamped with the clamping groove.

[0009] Preferably, a plurality of reinforcing ribs connected with the peripheral wall of the control valve are arranged on the bearing platform.

[0010] As preferred, the platform is located above the refrigerant inlet, which can isolate the refrigerant inlet outside the filling shell when the platform is clamped in the clamping groove.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The linkage switch structure of the refrigerant filling device displays the state of the control valve in real time through the digital display module, enhances the operation intuitiveness, and ensures the accuracy of the state feedback through the linkage of the micro switch and the digital display module. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall structure of the utility model is expanded schematic diagram.

[0014] Figure 2 is the utility model cross section structure schematic diagram.

[0015] In the figure, 1, filling shell;1a, left shell;1b, right shell;11, clamping groove;2, operating handle;21, transmission part;22, transmission contact;23, notch;3, control valve;31, valve stem;32, refrigerant inlet;33, refrigerant outlet;34, platform;35, reinforcing rib;4, digital display module;5, micro switch. DETAILED DESCRIPTION

[0016] The following is the specific embodiment of the utility model and is combined with the drawings, and the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0017] As Figure 1 , Figure 2As shown, the embodiment provides a linkage switch structure of a refrigerant filling device, which comprises a filling shell 1, an operating handle 2 and a control valve 3. The operating handle 2 is hinged to the filling shell 1, and the control valve 3 is fixed in the space formed by the filling shell 1 and the operating handle 2. The control valve 3 is used to regulate the flow of refrigerant. The upper end of the control valve 3 is provided with a valve rod 31 for opening or closing the refrigerant flow path. The operating handle 2 is provided with a transmission part 21 matched with the valve rod 31. The lower end of the control valve 3 is provided with a refrigerant inlet 32 for receiving refrigerant input. The control valve 3 is provided with a refrigerant outlet 33 on the side. A micro switch 5 is fixed on one side of the control valve 3. The transmission contact 22 of the operating handle 2 is matched with the micro switch 5. A digital display module 4 is arranged on the filling shell 1 to display the state of the control valve 3. The micro switch 5 is electrically connected with the digital display module 4. When the operating handle 2 moves along the hinge axis, the transmission part 21 and the transmission contact 22 can move synchronously from top to bottom and abut against the valve rod 31 and the micro switch 5, respectively.

[0018] In use, when the user needs to open the refrigerant filling device, the transmission part 21 is in contact with the valve rod 31 and drives it to move by pressing the operating handle 2. At this time, the refrigerant flow path in the control valve 3 is opened, and the refrigerant enters from the refrigerant inlet 32 and outputs through the refrigerant outlet 33. At the same time, with the movement of the operating handle 2, the transmission contact 22 is in contact with the micro switch 5 and triggers the switch action. The micro switch 5 then sends an electrical signal to the digital display module 4 indicating that the control valve 3 has been opened. After receiving the signal, the digital display module 4 immediately updates the display content to reflect the current state of the control valve 3. When the user needs to close the refrigerant filling device, the valve rod 31 drives the transmission part 21 to move so that the operating handle 2 is reset until the refrigerant flow path is closed. At the same time, the transmission contact 22 is separated from the micro switch 5, and the micro switch 5 sends an electrical signal to the digital display module 4 indicating that the control valve 3 has been closed. The digital display module 4 updates the display content again to reflect the new state of the control valve 3.

[0019] The state of the control valve 3 is displayed in real time by the digital display module 4, so the user can intuitively understand the working condition of the refrigerant filling device, thereby avoiding misoperation or omission of operation and improving the operation intuitiveness. The linkage design of the micro switch 5 and the digital display module 4 ensures the accurate feedback of the state of the control valve 3. Once the operating handle 2 moves to change the state of the control valve 3, the digital display module 4 will immediately update the display content to reflect the actual situation, thereby improving the operation accuracy.

[0020] The control valve 3 is a key component for refrigerant flow. In the embodiment, the valve rod 31 and the refrigerant inlet 32 are arranged at the two ends of the control valve 3, and the refrigerant outlet 33 is distributed on the side of the control valve 3. This layout not only ensures the smoothness of the refrigerant flow, but also effectively improves the compactness and stability of the control valve 3.

[0021] The valve rod 31 acts as a switch to control the refrigerant flow path, and its movement is closely linked to the operation of the handle 2. When the handle 2 is pressed, it will push the valve rod 31 up and down through the transmission part 21, thereby opening or closing the refrigerant flow path. It is worth noting that the movement of the valve rod 31 not only controls the flow of refrigerant, but also triggers the micro switch 5 through the transmission contact 22 on the handle 2. This top-down co-triggering mechanism ensures the synchronization and accuracy of the operation.

[0022] Further, as shown in the embodiment, the handle 2 side is provided with a notch 23 that matches the outer surface of the micro switch 5, and the transmission contact 22 is arranged on the notch 23. Figure 1

[0023] When the handle 2 is pressed, the transmission contact 22 can move with the handle and trigger the micro switch 5. After triggering, the end face of the notch 23 can be attached to the outer surface of the micro switch 5, and the micro switch 5 is clamped in the notch 23. The notch 23 has a calibration and confirmation effect on the triggering of the micro switch 5, which ensures the stability of the control valve 3 in the on state and improves the accuracy of the feedback information of the micro switch 5.

[0024] Further, the micro switch 5 is arranged upwardly inclined relative to the horizontal direction.

[0025] When the user presses or rotates the handle 2, the transmission contact 22 can generate greater force when triggering the micro switch 5 due to the upward inclination of the micro switch 5 relative to the horizontal direction, thereby improving the linkage response speed of the micro switch 5 and helping to improve the operation efficiency and accuracy of the refrigerant filling device. It can also reduce the interference of external factors (such as vibration, impact, etc.) to a certain extent, thereby improving the stability and reliability of the equipment.

[0026] As a preferred embodiment, the filling housing 1 comprises a left housing 1a and a right housing 1b arranged symmetrically, and the left housing 1a and the right housing 1b are connected by snap-fit to form a ring-shaped clamping groove 11 on the inner wall, and the control valve 3 is arranged with a bearing platform 34 that can be clamped with the clamping groove 11.

[0027] The control valve 3 can be quickly clamped and fixed on the clamping groove 11 through the bearing platform 34, realizing quick installation and connection with the housing 1, and simplifying the installation steps. When the valve rod 31 is triggered in linkage with the micro switch 5, the pressure from top to bottom is evenly transmitted to the filling housing 1 part at the clamping groove 11 through the bearing platform 34, ensuring the stability of the refrigerant filling process.

[0028] Further, a plurality of reinforcing ribs 35 are arranged on the bearing platform 34 and connected with the peripheral wall of the control valve 3. ​

[0029] The reinforcing rib 35 on the support platform 34 is connected with the control valve 3, forming a stable support structure, effectively enhancing the structural strength of the control valve 3, and improving the pressure bearing capacity and anti-deformation capacity of the connection between the control valve 3 and the filling shell 1.

[0030] Further, the support platform 34 is located above the refrigerant inlet 32, and when the support platform 34 is clamped in the clamping groove 11, the refrigerant inlet 32 can be isolated outside the filling shell 1. This helps to reduce the risk of refrigerant leakage, prevents the refrigerant storage device from leaking and polluting the internal components of the filling shell 1 during the connection with the refrigerant inlet 32, and improves the safety of the filling process.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A linkage switch structure of a refrigerant filling device, comprising a filling housing (1), an operation handle (2) and a control valve (3), the operation handle (2) being hinged to the filling housing (1), the control valve (3) being fixed in a space formed by the filling housing (1) and the operation handle (2), characterized in that, The control valve (3) is provided with a valve rod (31) for opening or closing the refrigerant flow path at the upper end, the operating handle (2) is provided with a transmission part (21) matched with the valve rod (31), the control valve (3) is provided with a refrigerant inlet (32) at the lower end, the control valve (3) is provided with a refrigerant outlet (33) at the side, the control valve (3) is fixed with a micro switch (5) at one side, the operating handle (2) is provided with a transmission contact (22) at the position matched with the micro switch (5), the filling shell (1) is provided with a digital display module (4) for displaying the state of the control valve (3), the micro switch (5) is electrically connected with the digital display module (4), when the operating handle (2) is operated along the hinge shaft, the transmission part (21) and the transmission contact (22) can move synchronously from top to bottom and respectively abut with the valve rod (31) and the micro switch (5).

2. The linkage switch structure of a refrigerant filling device according to claim 1, wherein The operating handle (2) is provided with a notch (23) matched with the outer periphery of the micro switch (5), and the transmission contact (22) is arranged on the notch (23).

3. The linkage switch structure of a refrigerant filling device according to claim 2, wherein The micro switch (5) is arranged upwardly inclined relative to the horizontal direction.

4. The linkage switch structure of a refrigerant filling device according to claim 1 or 2, characterized in that The filling shell (1) comprises left and right symmetrical left and right shells (1a) and (1b), the left and right shells (1a) and (1b) are connected by buckling to form a clamping groove (11) in the inner wall, and the control valve (3) is provided with a bearing platform (34) matched with the clamping groove (11).

5. The linkage switch structure of a refrigerant filling device according to claim 4, wherein A plurality of reinforcing ribs (35) are arranged on the bearing platform (34) and connected with the peripheral wall of the control valve (3).

6. The linkage switch structure of a refrigerant filling device according to claim 4, wherein The bearing platform (34) is located above the refrigerant inlet (32), and when the bearing platform (34) is clamped in the clamping groove (11), the refrigerant inlet (32) can be isolated outside the filling shell (1).

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