CN210242111U - Refrigerant fills quick-witted constant voltage equipment with signal feedback function - Google Patents

Abstract

The utility model provides a refrigerant fills annotates quick-witted constant voltage equipment with signal feedback function, the purpose is solved current pressure balance device and is filling when annotating the filling refrigerant, and liquid pressure is too high or low excessively, and operating personnel can't in time judge and give the technical problem of timely processing. The constant pressure device includes: the first piston cylinder is provided with a compressed air interface; the second piston cylinder is provided with a three-fork pipeline joint, the three-fork pipeline joint is positioned at the end part of the second piston cylinder and communicated with the inside of the second piston cylinder, and the second piston cylinder is coaxially connected with the first piston cylinder; the double-head piston comprises a first piston head, a second piston head and a piston rod, wherein the first piston head is positioned in the first piston cylinder, the second piston head is positioned in the second piston cylinder, and the piston rod is connected with the first piston head and the second piston head; and signal feedback devices are arranged at two ends of the first piston cylinder and are in contact with the first piston head to trigger signals.

Description

Refrigerant fills quick-witted constant voltage equipment with signal feedback function

Technical Field

The utility model relates to a refrigerant fills annotates electromechanical technical field, especially relates to a refrigerant fills annotates quick-witted constant voltage equipment with signal feedback function.

Background

In the production of refrigeration equipment such as air conditioners, refrigerators and the like, refrigerant is filled, and generally, the refrigerant is pressurized by a pressurization device and then filled into the required equipment through a filling machine. During charging, the refrigerant pressure fluctuates and the output cannot be smooth. At present, a leather bag type energy accumulator is mostly adopted for stabilizing pressure, and absorbing and digesting pressure fluctuation of a refrigerant caused by supercharging equipment, temperature change, a switch valve and the like. The leather bag type energy accumulator adjusts the pressure through the compression and expansion of the nitrogen bag, and has quick pressure response and good pressure stabilizing effect. However, the leather bag energy storage device also has the defects that if the application range is limited, the leather bag material is compatible with the filled refrigerant to be used; and the leather bag has aging phenomenon due to the characteristics of the material, and needs to be maintained regularly.

The utility model discloses a refrigerant fills and annotates machine refrigerant pressure balancing unit in chinese utility model CN202149653U, the device are equipped with the balance cylinder, and the balance cylinder includes cylinder chamber and hydraulic cylinder chamber, goes the equilibrium of control refrigerant liquid pressure through compressed air, and the device has effectively avoided the defect such as the chemical compatibility and the skin bag of skin bag formula accumulator in the refrigerant fills and annotates the application ageing, and application scope is wide, and the steady voltage performance is good. However, the structure and the function of the device are relatively single, the piston rod of the device is completely positioned in the cylinder body of the balance cylinder, an operator cannot accurately and timely know the running condition of the balance cylinder, if the pressure of the filled refrigerant liquid is too high or too low, the device is in a limit working state, the pressure stabilizing effect is lost, and the operator cannot timely judge and make corresponding treatment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a refrigerant fills annotates quick-witted constant voltage equipment with signal feedback function solves current pressure balance device and when filling the notes refrigerant, and liquid pressure is too high or low excessively, and operating personnel can't in time judge and give the defect of in time handling.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a refrigerant charger constant pressure device with signal feedback function, characterized by that, includes:

the first piston cylinder is provided with a compressed air interface;

the second piston cylinder is provided with a three-fork pipeline joint, the three-fork pipeline joint is positioned at the end part of the second piston cylinder and communicated with the inside of the second piston cylinder, and the second piston cylinder is coaxially connected with the first piston cylinder;

the double-head piston comprises a first piston head, a second piston head and a piston rod, wherein the first piston head is positioned in the first piston cylinder, the second piston head is positioned in the second piston cylinder, and the piston rod is connected with the first piston head and the second piston head;

and signal feedback devices are arranged at two ends of the first piston cylinder and are in contact with the first piston head to trigger signals.

Further, the signal feedback device is a trigger switch.

Furthermore, the trigger switch comprises a switch element and a trigger element, the switch element is fixedly arranged outside the first seal head of the first piston cylinder, and the trigger element penetrates through the first seal head of the first piston cylinder in a sliding mode and extends into the first piston cylinder.

Furthermore, the trigger element comprises a sliding pin, a return spring and a sealing ring, and the sealing ring is arranged in the through hole of the first seal head; the sliding pin penetrates through the through hole in the first seal head and is tightly matched with the seal ring; the reset spring is sleeved on the sliding pin.

Furthermore, the sliding pin is of a T-shaped structure, one end of the sliding pin is provided with a round convex block, the reset spring is sleeved on the column body of the sliding pin, and the end part of the reset spring is fixedly connected with the round convex block.

Further, the trigger element further comprises a gasket, and the gasket is installed between the sealing ring and the return spring.

Further, the signal feedback device is connected with an external signal display device, an alarm device or a controller.

Further, the trifurcate pipeline joint comprises an inlet and an outlet, and the inlet and the outlet are both provided with one-way valves.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a constant voltage equipment establishes coaxial coupling's first piston cylinder and second piston cylinder, and two piston cylinder sharing double-end piston rods. When the device works, compressed air with certain pressure is connected into the first piston cylinder, the three-fork pipeline joint is connected with the booster station and the filling machine, and when the pressure of refrigerant liquid rises, part of the refrigerant liquid enters the second piston cylinder; when the pressure of the refrigerant liquid is reduced, the refrigerant liquid in the second piston cylinder is pushed by compressed air and pumped out, the pressure of the refrigerant liquid at the outlet of the three-fork pipeline joint is complemented, and the pressure of the refrigerant liquid conveyed into the filling machine is guaranteed to be stable. The two ends of the first piston cylinder are provided with signal feedback devices, when the pressure of the refrigerant liquid is too high, the double-head piston is pressed leftwards, and the first piston head is contacted with the signal feedback device on the left side to trigger a high-pressure signal; when the pressure of the refrigerant liquid is too low, the piston head is pressed rightwards by the compressed air, and the first piston head is contacted with the signal feedback device on the right side to trigger a low-pressure signal. The operating personnel can timely make corresponding treatment according to the signal display information, and the unstable pressure of the refrigerant fluid and the accidents during filling are avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a signal feedback device in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the double-headed piston rod in the embodiment of the present invention.

Reference numerals:

100: a first piston cylinder; 110: a compressed air interface; 120: a first end enclosure;

200: a second piston cylinder; 210: a second end enclosure;

300: a double-headed piston; 310: a first piston head; 320: a second piston head; 330: a piston rod;

400: a three-fork pipe joint; 410: an inlet; 420: an outlet;

500: a signal feedback device; 510: a switching element; 520: a slide pin; 521: a circular bump; 530: a return spring; 540: a seal ring; 550: and (7) a gasket.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left", "right", "axial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the product of the present invention is usually placed when in use, or the orientation or positional relationship that a person skilled in the art usually understands, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a constant pressure device of a refrigerant charging machine with signal feedback function, and the device includes a first piston cylinder 100, a second piston cylinder 200, a double-headed piston 300, a trident pipe joint 400, and a signal feedback device 500. The first piston cylinder 100 and the second piston cylinder 200 are coaxially connected through end portions, one end of the double-headed piston 300 is located in the first piston cylinder 100, and the other end of the double-headed piston is located in the second piston cylinder 200; the three-fork pipeline joint 400 is arranged on the second piston cylinder 200 and communicated with the inside of the second piston cylinder 200; the signal feedback device 500 is mounted on both ends of the first piston cylinder 100.

In this embodiment, the two end portions of the first piston cylinder 100 are provided with first end sockets 120, the first end socket 120 at the left end is provided with a compressed air port 110, and the compressed air port 110 is communicated with the inside of the first piston cylinder 100, connected with a compressed air device, and used for the inlet and outlet of high-pressure air. The first end sockets 120 at the two ends are provided with through holes, and the through holes are used for installing the signal feedback devices 500; the exterior of the first end enclosure 120 is further provided with an end enclosure cover, and the end enclosure cover forms a cavity between the first end enclosure 120. Piston holes are also formed in the first seal head 120 and the seal head cover on the right side, and a piston rod 330 can slide through the piston holes.

The two ends of the second piston cylinder 200 are provided with second seal heads 210, and the second seal head 210 at the left end is provided with a piston hole. The left end of the second piston cylinder 200 is connected to the right end of the first piston cylinder 100.

Referring to fig. 3, the double-headed piston 300 includes a first piston head 310, a second piston head 320, and a piston rod 330. The first piston head 310 is positioned in the first piston cylinder 100 and is matched with the inner cavity of the first piston cylinder 100; the second piston head 320 is positioned in the second piston cylinder 200 and is matched with the inner cavity of the second piston cylinder 200; the piston rod 330 passes through the connecting part of the first piston cylinder 100 and the second piston cylinder 200, namely the piston rod 330 passes through the piston holes on the right end first sealing head 120, the right end sealing head cover and the left end second sealing head 210 and is connected with the first piston head 310 and the second piston head 320. I.e., the double-ended piston 300 is positioned within the first piston cylinder 100 on one end and the second piston cylinder 200 on the other end.

Referring to fig. 1 and 2, in the present embodiment, the signal feedback device 500 is a trigger switch, and the trigger switch includes a switch element 510 and a trigger element, and the switch element 510 is fixedly mounted outside the first head 120 of the first piston cylinder 100, and is located inside the head housing, and is adapted to the position of the through hole on the first head 120. The trigger element passes through the through hole on the first seal head 120, one end of the trigger element extends into the first piston cylinder 100, the other end of the trigger element is positioned in the seal head cover, and the trigger element is connected with the through hole in a sealing and sliding manner. The first piston head 310 contacts the trigger element as it moves within the end of the first piston cylinder 100, pushing the trigger element into contact with the switch element 510 to trigger the signal feedback device.

The trigger element of one embodiment includes a sliding pin 520, a return spring 530, a seal 540, and a spacer 550. The sealing ring 540 and the gasket 550 are installed in the through hole of the first sealing head 120. The sliding pin 520 penetrates through the through hole to be tightly and slidably matched with the sealing ring 540, the sliding pin 550 is of a T-shaped structure, one end, located in the first piston cylinder 100, of the sliding pin is provided with a circular convex block 521, the return spring 530 is sleeved on the column body of the sliding pin 520 and limited between the circular convex block 521 and the gasket 550 through the circular convex block 521, and namely the gasket 550 is located between the sealing ring 540 and the return spring 530. Further, the end of the return spring 530 is fixedly connected to the circular protrusion 521, that is, the return spring 530 and the sliding pin 520 are integrally formed, so that the installation is convenient, and the return spring 530 can be prevented from being lost during the re-installation process.

The three-way pipe joint 400 has three ports, one is an inlet 410, and is connected with a pressurizing station; one connecting the filler to the outlet 420; and a third connected to the second piston cylinder 200. The inlet 410 and the outlet 420 of the three-way pipe joint 400 are both provided with one-way valves, and the pressurized refrigerant liquid can only flow in from the inlet 410 end and flow out from the outlet 420 end without backflow.

The operation procedure is that firstly, the compressed air interface 110 is connected with an air compression device, the inlet 410 of the three-fork pipeline joint 400 is connected with a pressurizing station through a pipeline, and the outlet 420 is connected with a filling machine through a pipeline; the pressurized refrigerant fluid flows through the part of the three-way pipe joint 400 and enters the second piston cylinder 200 to form dynamic balance with the compressed air of the first piston cylinder 100. When the pressure of the refrigerant rises, the double-end piston 300 slides leftwards to absorb redundant pressure; when the pressure of the refrigerant liquid is reduced, the double-end piston 300 slides rightwards to supplement insufficient pressure, so that the pressure of the refrigerant liquid flowing out from the outlet 420 of the three-fork pipe joint 400 is maintained in a stable constant pressure state. When the refrigerant pressure is too high, the double-headed piston 300 is pressed leftwards, so that the first piston head 310 is contacted with and presses the left sliding pin 520, the sliding pin 520 slides along the through hole, is contacted with the switch element 510, and triggers and sends a contact signal; when the refrigerant pressure is too low, the double-headed piston 300 is pressed rightward, the first piston head 310 contacts and presses the right sliding pin 520, the switching element 510 is triggered, and a contact signal is transmitted.

The switch element 510 and the sliding pin 520 are connected to an external signal display device (not shown), which can transmit and display the contact signal in real time, so that the operator can know that the constant pressure device is in the extreme working state in time to perform corresponding operation, such as closing the valve, adjusting the pressure of the refrigerant output from the pressurizing station, and the like. Obviously, the switch element 510 and the sliding pin 520 may also be connected to an alarm device or a controller, and the alarm device or the controller may prompt an operator through a sound or light signal, or may perform intelligent control directly through the controller.

Claims (8)

1. A refrigerant charger constant pressure device with signal feedback function, characterized by that, includes:

the first piston cylinder (100) is provided with a compressed air interface (110);

the second piston cylinder (200) is provided with a three-fork pipeline joint (400), the three-fork pipeline joint (400) is positioned at the end part of the second piston cylinder (200) and communicated with the inside of the second piston cylinder (200), and the second piston cylinder (200) is coaxially connected with the first piston cylinder (100);

a dual headed piston (300) comprising a first piston head (310), a second piston head (320), and a piston rod (330), the first piston head (310) being located within the first piston cylinder (100), the second piston head (320) being located within the second piston cylinder (200), the piston rod (330) connecting the first piston head (310) and the second piston head (320);

wherein, both ends of the first piston cylinder (100) are provided with signal feedback devices (500), and the signal feedback devices are in contact with the first piston head (310) to trigger signals.

2. The constant pressure device of refrigerant charging machine with signal feedback function as claimed in claim 1, wherein the signal feedback device (500) is a trigger switch.

3. The constant pressure device of the refrigerant filling machine with the signal feedback function as claimed in claim 2, wherein the trigger switch comprises a switch element (510) and a trigger element, the switch element (510) is fixedly installed outside the first sealing head (120) of the first piston cylinder (100), and the trigger element is slidably inserted through the first sealing head (120) of the first piston cylinder (100) and extends into the first piston cylinder (100).

4. The constant pressure device of refrigerant filling machine with signal feedback function as claimed in claim 3, wherein the triggering element comprises a sliding pin (520), a return spring (530) and a sealing ring (540), the sealing ring (540) is installed in the through hole of the first sealing head (120); the sliding pin (520) penetrates through a through hole in the first seal head (120) and is tightly matched with the sealing ring (540); the return spring (530) is sleeved on the sliding pin (520).

5. The constant pressure device with the signal feedback function for the refrigerant charging machine as claimed in claim 4, wherein the sliding pin (520) has a "T" shape, one end of the sliding pin has a circular protrusion (521), the return spring (530) is sleeved on the body of the sliding pin (520), and the end of the return spring (530) is fixedly connected to the circular protrusion (521).

6. The constant pressure device of refrigerant filling machine with signal feedback function as claimed in claim 5, wherein said trigger element further comprises a gasket (550), said gasket (550) is installed between the sealing ring (540) and the return spring (530).

7. The constant pressure device of refrigerant charging machine with signal feedback function as claimed in any one of claims 1 to 6, wherein the signal feedback device (500) is connected with an external signal display device, an alarm device or a controller.

8. The constant pressure device of refrigerant charging machine with signal feedback function as claimed in any one of claims 1 to 6, wherein said three-way pipe joint (400) comprises an inlet (410) and an outlet (420), and a check valve is disposed on each of said inlet (410) and said outlet (420).

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