CN220892627U - Air conditioner refrigerant filling quantity regulating and controlling device - Google Patents

Abstract

The utility model provides an air conditioner refrigerant filling quantity regulating and controlling device, which comprises a conveying pipe used for being connected with an air conditioner unit, wherein an electromagnetic valve and a flowmeter are sequentially arranged on the conveying pipe; the electromagnetic valve and the flowmeter are respectively and electrically connected with the controller. When the air conditioning unit is used for discharging the refrigerant outwards, the air conditioning refrigerant filling quantity regulating device can be connected between the air conditioning unit and the refrigerant storage tank, the refrigerant discharge quantity is set through the controller, the opening degree of the electromagnetic valve is controlled in real time by receiving the refrigerant addition quantity signal transmitted by the flowmeter, and the quantitative discharge of the refrigerant is realized.

Description

Air conditioner refrigerant filling quantity regulating and controlling device

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner refrigerant filling quantity regulating device.

Background

Proper amount of refrigerant is needed for good and efficient operation of the air conditioning system, the performance and the use effect of the air conditioning are affected by excessive or less refrigerant, and the components of the air conditioning system are damaged when serious.

When the air conditioner is tested in production, the refrigerant quantity error is one of important links of energy efficiency test, when the refrigerant quantity is insufficient, the refrigerant is added to the air conditioner, and when the refrigerant quantity is excessive, part of the refrigerant is discharged outwards, so that the proper refrigerant filling quantity in the air conditioner system is ensured, and the air conditioner is ensured to operate well.

At present, when a refrigerant is added to an air conditioning system or discharged outwards from the air conditioning system, the electronic weighing equipment is generally used for measuring the overall mass change of an air conditioning unit so as to judge whether the refrigerant quantity in the air conditioning system meets the standard, and the electronic weighing equipment is used for measuring the refrigerant filling quantity so as to have the defects of larger error, easiness in being influenced by external factors, high labor intensity of a moving unit and the like.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model provides the air conditioner refrigerant filling quantity regulating device which can realize quantitative control of the additional quantity or the discharge quantity of the refrigerant and ensure the correct refrigerant filling quantity in an air conditioner system.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The air conditioner refrigerant filling quantity regulating and controlling device comprises a conveying pipe used for being connected with an air conditioner unit, wherein an electromagnetic valve and a flowmeter are sequentially arranged on the conveying pipe;

The electromagnetic valve and the flowmeter are respectively and electrically connected with the controller.

The air conditioner refrigerant filling quantity regulating device is connected between the air conditioner unit and the refrigerant filling equipment, the refrigerant filling quantity is set through the controller, and the opening of the electromagnetic valve is controlled in real time by receiving the refrigerant filling quantity signal transmitted by the flowmeter, so that the quantitative addition of the refrigerant is realized.

According to the air conditioner refrigerant filling quantity regulating device, when the air conditioner refrigerant filling quantity is excessive, part of refrigerant is required to be discharged outwards by the air conditioner unit, at the moment, the air conditioner refrigerant filling quantity regulating device can be connected between the air conditioner unit and a refrigerant storage tank, the refrigerant discharge quantity is set through the controller, and the opening degree of the electromagnetic valve is controlled in real time by receiving a refrigerant discharge quantity signal transmitted by the flowmeter, so that quantitative discharge of the refrigerant is realized.

Therefore, the air conditioner refrigerant filling quantity regulating device can quantitatively regulate and control the refrigerant filling quantity of the air conditioner unit, ensure that the refrigerant filling quantity in the air conditioner system is correct, and further ensure that the air conditioner system can operate well and efficiently

Meanwhile, the air conditioner refrigerant filling quantity regulating device is detached after the refrigerant filling quantity is calibrated, can be used as a calibrating tool for repeated use, reduces the movement of moving an air conditioner unit in the operation process and reduces the labor intensity compared with the method for measuring the refrigerant quantity by using electronic weighing equipment.

In some embodiments, the device further comprises a quick connector arranged at one end of the conveying pipe;

The conveying pipe is connected with the air conditioning unit through the quick connector.

The air conditioner refrigerant filling quantity regulating and controlling device is connected with an air conditioner unit through the quick connector, so that quick assembly and disassembly of the air conditioner refrigerant filling quantity regulating and controlling device can be realized, the action is simple, and time and labor are saved.

In some embodiments, the quick connector comprises a male connector and a female connector;

the male connector is used for being connected with the air conditioning unit, one end of the female connector is connected with the conveying pipe, and the other end of the female connector is connected with the male connector.

The male connector of the air conditioner refrigerant filling quantity regulating device is arranged on a refrigerant filling port of an air conditioner unit, the male connector is used for preventing refrigerant leakage after an air conditioner valve is opened, the female connector is arranged on a conveying pipe and is used as the head end of the air conditioner refrigerant filling quantity regulating device, the male connector is used for being in butt joint with the male connector to be communicated with the air conditioner unit and the air conditioner refrigerant filling quantity regulating device, quick on-off of a refrigerant flow path is realized, and the female connector is self-sealed after separation, so that refrigerant loss is avoided.

In some embodiments, the male connector includes a first valve body, a first spool rod, a first resilient member, a first mounting bracket, and a first seal member;

The first valve core rod and the first mounting bracket are arranged in a first channel at the inner side of the first valve body, a first flow hole is formed in the first mounting bracket, the first valve core rod is sleeved with the first sealing element, and the first elastic element is arranged between the first valve core rod and the first mounting bracket;

The first elastic piece is in an initial state, and the outer surface of the first sealing piece is in contact with the inner surface of the first channel; the first resilient element is in a compressed state, and a gap is formed between an outer surface of the first seal element and an inner surface of the first channel.

In some embodiments, the female connector includes a second valve body, a second spool rod, a second resilient member, a second mounting bracket, and a second seal member;

The second valve core rod and the second mounting bracket are arranged in a second channel at the inner side of the second valve body, a second flow hole is formed in the second mounting bracket, the second valve core rod is sleeved with the second sealing piece, and the second elastic piece is arranged between the second valve core rod and the second mounting bracket;

The second elastic piece is in an initial state, and the outer surface of the second sealing piece is in contact with the inner surface of the second channel; the second elastic member is in a compressed state, and a gap is formed between an outer surface of the second sealing member and an inner surface of the second channel.

In some embodiments, the female connector further comprises a ferrule, a third resilient member, a check ball, and a retainer ring;

the second valve body is provided with a mounting hole, the limiting ball is arranged in the mounting hole, the outer surface of the first valve body is provided with a positioning groove, and the positioning groove is matched with the limiting ball;

The clamping sleeve is sleeved on the outer side of the second valve body, and the third elastic piece is arranged between the clamping sleeve and the second valve body;

The inner surface of the clamping sleeve is provided with a limiting boss, the second valve body is also provided with a mounting groove, and the retainer ring is mounted in the mounting groove;

The third elastic piece is in an initial state, the top surface of the limiting boss is abutted against the limiting ball, and the side surface of the limiting boss is abutted against the retainer ring; the third elastic piece is in a compressed state, and the limiting boss is far away from the check ring so as to avoid the limiting ball.

In some embodiments, the female connector further comprises at least one sealing ring disposed at a contact surface of the second valve body that interfaces with the first valve.

In some embodiments, the solenoid valve is an electronic expansion valve.

The air conditioner refrigerant filling quantity regulating and controlling device adopts the electronic expansion valve to realize accurate control of refrigerant flow rate, ensures that the flowmeter can accurately measure refrigerant quality, the stator coil of the electronic expansion valve is electrically connected with the controller, the controller sends out a control command, pulse voltage is applied to the stator coil to drive the inside permanent magnet rotor to positively and negatively rotate, a screw rod connected with the permanent magnet rotor drives the valve needle to move up and down, the valve needle opening is changed, and accurate regulation of flow is realized.

In some embodiments, the flow meter is a mass flow meter.

The air conditioner refrigerant filling quantity regulating device can accurately control the additional quantity or the discharge quantity of the refrigerant by adopting the mass flowmeter capable of directly measuring the mass flow of the refrigerant and matching with the electronic expansion valve, so that the accurate refrigerant filling quantity in an air conditioner system is ensured, and the air conditioner system can be operated well and efficiently.

In some embodiments, the controller is a PLC controlled display screen.

The controller of the air conditioner refrigerant filling quantity regulating and controlling device adopts a PLC control display screen, can set the required refrigerant adding quantity or refrigerant discharging quantity through manual touch, can display feedback signals of the mass flowmeter and the electronic expansion valve in real time, and is convenient for production management and process data analysis through the running state of the color change reflecting device.

Therefore, the air conditioner refrigerant filling quantity regulating device can realize the following beneficial effects:

1. The quantitative control of the additional quantity or the discharge quantity of the refrigerant can be realized, and the accurate filling quantity of the refrigerant in the air conditioning system is ensured;

2. The device can be used as a calibration tool for repeated use, so that the movement of moving the air conditioning unit in the operation process is reduced, and the labor intensity is reduced.

3. The structural design of the quick connector can ensure the tightness of the quick connector when the quick connector is not conducted, thereby improving the reliability of the quick connector.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic diagram of a device for regulating and controlling the refrigerant filling amount of an air conditioner according to the present utility model;

FIG. 2 is a schematic diagram of the air conditioner coolant filling amount control device according to the present utility model when discharging coolant;

FIG. 3 is a schematic diagram of the air conditioner coolant filling amount control device according to the present utility model when adding coolant;

FIG. 4 is a schematic view of a male connector according to the present utility model, wherein a first elastic member is in an initial state;

FIG. 5 is a second schematic structural view of the male connector according to the present utility model, in which the first elastic member is in a compressed state;

FIG. 6 is a schematic view of a first mounting bracket according to the present utility model;

FIG. 7 is a schematic view of a female connector according to the present utility model, wherein the second elastic member and the third elastic member are both in an initial state;

FIG. 8 is a second schematic structural view of the female connector of the present utility model, in which the second elastic member is in a compressed state and the third elastic member is in an initial state;

FIG. 9 is a third schematic structural view of the female connector of the present utility model, wherein the second elastic member and the third elastic member are both in a compressed state;

FIG. 10 is a schematic view of the male connector of the present utility model connected to a refrigerant fill port of an air conditioning unit;

FIG. 11 is a schematic illustration of the female connector of the present utility model attached to a delivery tube;

FIG. 12 is a schematic view of the male and female connectors of the present utility model after mating;

wherein:

1-a conveying pipe; 2-an electromagnetic valve; 3-a flow meter; 4-a controller; 5-quick connector; 6-a refrigerant storage tank; 7-refrigerant filling equipment;

51-male connector; 511-a first valve body; 512-first valve core rod; 513-a first elastic member; 514-a first mounting bracket; 515 a first seal;

5111-positioning groove; 5141-a first flow aperture;

52-female joint; 521-a second valve body; 522-a second valve stem; 523-a second elastic member; 524-a second mounting bracket; 525-a second seal; 526-ferrule; 527-a third elastic member; 528-limit ball; 529-retaining ring; 530-a sealing ring;

5241-second flow holes; 5261-limit boss.

Detailed Description

Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

When the air conditioner is tested in production, the refrigerant quantity error is one of important links of energy efficiency test, when the refrigerant quantity is insufficient, the refrigerant is added to the air conditioner, and when the refrigerant quantity is excessive, part of the refrigerant is discharged outwards, so that the proper refrigerant filling quantity in the air conditioner system is ensured, and the air conditioner is ensured to operate well.

At present, when a refrigerant is added to an air conditioning system or discharged outwards from the air conditioning system, the electronic weighing equipment is generally used for measuring the overall mass change of an air conditioning unit so as to judge whether the refrigerant quantity in the air conditioning system meets the standard, and the electronic weighing equipment is used for measuring the refrigerant quantity so as to have the defects of larger error, easiness in being influenced by external factors, high labor intensity of a moving unit and the like.

Therefore, the application provides an air conditioner refrigerant filling quantity regulating device, which aims to solve the problems that the existing electronic weighing equipment is used for measuring refrigerant filling quantity, the error is large, the influence of external factors is easy to occur, the labor intensity of a moving unit is high and the like.

Example 1

As shown in fig. 1, the air conditioner refrigerant filling amount adjusting and controlling device of the present embodiment includes a conveying pipe 1, an electromagnetic valve 2, a flowmeter 3 and a controller 4, wherein the conveying pipe 1 is connected to a refrigerant filling port of an air conditioning unit, the electromagnetic valve 2 and the flowmeter 3 are sequentially arranged on the conveying pipe 1, the electromagnetic valve 2 is used for controlling on-off of the conveying pipe 1 and refrigerant flow rate, the flowmeter 3 is used for measuring refrigerant amount flowing through the conveying pipe 1, the controller 4 adopts independent control components and is respectively electrically connected with the electromagnetic valve 2 and the flowmeter 3, and the controller 4 controls opening of the electromagnetic valve 2 in real time by receiving refrigerant amount signals transmitted by the flowmeter 3.

By applying the technical scheme of the embodiment, when the refrigerant filling amount of the air conditioner is insufficient, the refrigerant needs to be added to the air conditioner unit, at this time, the air conditioner refrigerant filling amount regulating device of the embodiment can be connected between the air conditioner unit and the refrigerant filling equipment, the refrigerant adding amount is set through the controller 4, and the opening degree of the electromagnetic valve 2 is controlled in real time by receiving the refrigerant adding amount signal transmitted by the flowmeter 3, so that the quantitative addition of the refrigerant is realized; when the air conditioning refrigerant filling amount is too much, the air conditioning unit needs to discharge part of the refrigerant outwards, at this time, the air conditioning refrigerant filling amount regulating device of the embodiment can be connected between the air conditioning unit and the refrigerant storage tank, the refrigerant discharge amount is set through the controller 4, and the opening of the electromagnetic valve 2 is controlled in real time by receiving the refrigerant discharge amount signal transmitted by the flowmeter 3, so as to realize quantitative discharge of the refrigerant.

Therefore, the air conditioner refrigerant filling amount regulating and controlling device can quantitatively regulate and control the refrigerant filling amount of the air conditioner unit, ensure that the refrigerant filling amount in the air conditioner system is correct, and further ensure that the air conditioner system can operate well and efficiently.

Meanwhile, the air conditioner refrigerant filling quantity regulating and controlling device is detached after the refrigerant filling quantity is calibrated, can be used as a calibrating tool to be used repeatedly, reduces the movement of moving an air conditioner unit in the operation process and reduces the labor intensity compared with the method for measuring the refrigerant quantity by using electronic weighing equipment.

In some disclosures, one end of the delivery pipe 1 is also provided with a quick connector 5, through which quick connector 5 the delivery pipe 1 is connected to an air conditioning unit.

Specifically, the conveying pipe 1 is quickly connected with the refrigerant filling port of the air conditioning unit through the quick connector 5, so that the air conditioning refrigerant filling quantity regulating device and the air conditioning unit can be quickly disassembled and assembled, the action is simple, the time and the labor are saved, and the operation efficiency is improved.

In some disclosures, the quick connector 5 comprises a male connector 51 and a female connector 52, wherein the male connector 51 is used for being connected with an air conditioning unit, and the female connector 52 is connected with the conveying pipe 1 at one end and the male connector 51 at the other end.

Specifically, the male connector 51 may be installed on a refrigerant filling port of an air conditioning unit, and has the function that the refrigerant does not leak after the air conditioning valve is opened, that is, the male connector 51 has a self-locking function, and can instantaneously block the fluid flow when the male connector is not connected; the female connector 52 is installed on the conveying pipe 1 and is used as the device head end of the air conditioner refrigerant filling amount regulating device, and the female connector 52 is in butt joint with the male connector to be communicated with the air conditioner unit and the air conditioner refrigerant filling amount regulating device, and likewise, the female connector 52 also has a self-locking function, and can instantaneously block fluid flow when the female connector is not connected.

Therefore, through the quick butt joint of the male connector 51 and the female connector 52, the quick on-off of a refrigerant flow path can be realized, and meanwhile, after the male connector 51 and the female connector 52 are separated, the two ends are self-sealed, so that the loss of the refrigerant is avoided.

In some disclosures, solenoid valve 2 employs an electronic expansion valve.

During implementation, the stator coil of the electronic expansion valve is electrically connected with the controller 4, the controller 4 sends out a control command, pulse voltage is applied to the stator coil to drive the internal permanent magnet rotor to rotate positively and negatively, a screw rod connected to the permanent magnet rotor drives the valve needle to move up and down, and the opening of the valve needle is changed, so that the accurate control of the flow rate of the refrigerant is realized, and the quality of the refrigerant can be accurately measured by the flowmeter 3.

In some embodiments, the flow meter 3 is a mass flow meter.

In the concrete implementation, compared with the common flowmeter, the mass flowmeter can directly measure the mass flow of the refrigerant, and indirectly obtain the mass of the fluid through correction, conversion, compensation and other methods after measuring the temperature, pressure, density, volume and other parameters of the fluid, and can more accurately control the additional quantity or the discharge quantity of the refrigerant, ensure the correct cold filling quantity in the air conditioning system, and further ensure that the air conditioning system can operate well and efficiently.

In some embodiments, controller 4 employs a PLC to control the display screen.

In the concrete implementation, a PLC control display screen is adopted, the required refrigerant addition amount or refrigerant discharge amount can be set through manual touch, meanwhile, feedback signals of the mass flowmeter and the electronic expansion valve can be displayed in real time, and the production management and process data analysis are facilitated through the running state of the color change reflecting device.

Therefore, the air conditioning refrigerant filling quantity regulating device of the embodiment receives the refrigerant quantity signal transmitted by the flowmeter 3 through the controller 4, controls the opening of the electromagnetic valve 2 in real time, and can realize quantitative control of the additional quantity or the discharge quantity of the refrigerant, thereby realizing quantitative regulation and control of the refrigerant filling quantity of the air conditioning unit, ensuring that the refrigerant filling quantity in the air conditioning system is correct, and further ensuring that the air conditioning system can operate well and efficiently. Meanwhile, the air conditioner refrigerant filling quantity regulating and controlling device is simple in structure, convenient to use, and capable of being detached after the refrigerant filling quantity is calibrated, and being used as a calibrating tool repeatedly, compared with the method for measuring the refrigerant quantity by using electronic weighing equipment, the air conditioner unit moving action in the operation process is reduced, and the labor intensity is reduced.

Example two

As shown in fig. 2, the air conditioner refrigerant filling amount adjusting and controlling device of the present embodiment includes a conveying pipe 1, an electromagnetic valve 2, a flowmeter 3, a controller 4 and a refrigerant storage tank 6, wherein one end of the conveying pipe 1 is connected to a refrigerant filling port of an air conditioning unit, the other end is connected to the refrigerant storage tank 6, the electromagnetic valve 2 and the flowmeter 3 are sequentially arranged on the conveying pipe 1, the electromagnetic valve 2 is used for controlling on-off of the conveying pipe 1 and refrigerant flow rate, the flowmeter 3 is used for measuring refrigerant amount flowing through the conveying pipe 1, the controller 4 is electrically connected with the electromagnetic valve 2 and the flowmeter 3 respectively, and the controller 4 is used for controlling opening of the electromagnetic valve 2 in real time by receiving refrigerant discharge amount signals transmitted by the flowmeter 3.

According to the air conditioner refrigerant filling quantity regulating and controlling device, the controller 4 receives the refrigerant discharging quantity signal transmitted by the flowmeter 3, the opening of the electromagnetic valve 2 is controlled in real time, quantitative control of the refrigerant discharging quantity can be achieved, quantitative regulation and control of the refrigerant filling quantity of an air conditioner unit is achieved, the accuracy of the refrigerant filling quantity in an air conditioning system is guaranteed, and therefore the air conditioning system can operate well and efficiently. Meanwhile, the air conditioner refrigerant filling quantity regulating and controlling device is simple in structure, convenient to use and capable of being detached after the refrigerant is discharged, and can be used as a refrigerant discharging tool for repeated use, so that the movement of moving an air conditioner unit in the operation process is reduced, and the labor intensity is reduced compared with the use of electronic weighing equipment for measuring the refrigerant quantity.

Example III

As shown in fig. 3, the air conditioner refrigerant filling amount adjusting and controlling device of the present embodiment includes a conveying pipe 1, an electromagnetic valve 2, a flow meter 3, a controller 4 and a refrigerant filling device 7, wherein one end of the conveying pipe 1 is connected to a refrigerant filling port of an air conditioning unit, the other end is connected to the refrigerant filling device 7, the refrigerant filling device 7 can be a fluid pump or a filling gun, the electromagnetic valve 2 and the flow meter 3 are sequentially arranged on the conveying pipe 1, the electromagnetic valve 2 is used for controlling on-off of the conveying pipe 1 and refrigerant flow rate, the flow meter 3 is used for measuring refrigerant amount flowing through the conveying pipe 1, the controller 4 is respectively electrically connected with the electromagnetic valve 2 and the flow meter 3, and the controller 4 is used for controlling opening of the electromagnetic valve 2 in real time by receiving a refrigerant adding amount signal transmitted by the flow meter 3.

According to the air conditioner refrigerant filling quantity regulating and controlling device, the controller 4 receives the refrigerant additional quantity signal transmitted by the flowmeter 3, and the opening of the electromagnetic valve 2 is controlled in real time, so that quantitative control of the refrigerant additional quantity can be realized, quantitative regulation and control of the refrigerant filling quantity of an air conditioner unit can be realized, the accuracy of the refrigerant filling quantity in an air conditioning system is ensured, and the air conditioning system can be operated well and efficiently. Meanwhile, the air conditioner refrigerant filling quantity regulating and controlling device is simple in structure, convenient to use and capable of being detached after refrigerant addition is completed, and can be used as a refrigerant adding tool for repeated use, so that the movement of an air conditioner unit in the operation process is reduced, and the labor intensity is reduced compared with the use of an electronic weighing device for measuring the refrigerant quantity.

Example IV

As shown in fig. 1 and fig. 4 to fig. 12, the air conditioner refrigerant filling amount adjusting and controlling device of the present embodiment includes a conveying pipe 1, an electromagnetic valve 2, a flow meter 3, a controller 4 and a quick connector 5, wherein the conveying pipe 1 is connected to a refrigerant filling port of an air conditioner unit through the quick connector, the electromagnetic valve 2 and the flow meter 3 are sequentially arranged on the conveying pipe 1, the electromagnetic valve 2 is used for controlling on-off of the conveying pipe 1 and refrigerant flow rate, the flow meter 3 is used for measuring refrigerant amount flowing through the conveying pipe 1, the controller 4 is electrically connected with the electromagnetic valve 2 and the flow meter 3 respectively, and the controller 4 controls opening of the electromagnetic valve 2 in real time by receiving refrigerant amount signals transmitted by the flow meter 3.

In some disclosures, the quick connector 5 comprises a male connector 51 and a female connector 52, wherein the male connector 51 is connected to a refrigerant filling port of an air conditioning unit, the female connector 52 is connected to the conveying pipe 1, and quick connection and disconnection of a refrigerant flow path can be realized through quick butt joint of the male connector 51 and the female connector 52.

In some disclosures, the male connector 51 includes a first valve body 511, a first spool rod 512, a first resilient member 513, a first mounting bracket 514, and a first seal member 515.

The first valve body 511 is a tubular shell structure, a first channel through which a refrigerant passes is formed in the inner side of the first valve body 511, the first valve core rod 512 and the first mounting bracket 514 are sequentially arranged in the first channel, the first valve core rod 512 is of a stepped rod structure, the first mounting bracket 514 is of a bowl-shaped structure, as shown in fig. 6, 3 first flow holes 5141 are formed in the first valve core rod 512, a positioning hole through which the tail of the first valve core rod 512 passes is formed in the center of the first valve core rod, the first sealing piece 515 is a sealing ring and is sleeved on the conical head of the first valve core rod 512, and the first elastic piece 513 can be sleeved on the first valve core rod 512 by adopting a compression spring and is located between the head of the first valve core rod 512 and the first mounting bracket 514.

The first elastic member 513 has an initial state of intercepting the first passage and a compressed state of conducting the first passage. Referring to fig. 4, the first elastic member 513 is in an initial state, and an outer surface of the first sealing member 515 is in contact with an inner surface of the first passage, thereby intercepting the first passage. Referring to fig. 5, the first elastic member 513 is in a compressed state, and a gap is formed between an outer surface of the first sealing member 515 and an inner surface of the first passage, thereby communicating the first passage.

It is easily understood that the initial state is a pre-compressed state such that the outer surface of the first sealing member 515 is in close contact with the inner surface of the first passage, ensuring sealability when the male connector 51 is cut off.

In some disclosures, the female connector 52 includes a second valve body 521, a second spool rod 522, a second spring 523, a second mounting bracket 524, a second seal 525, a ferrule 526, a third spring 527, a check ball 528 and, a retainer ring 529, and a seal ring 530.

The second valve body 521 is also a tubular housing structure, and a second channel through which the refrigerant passes is provided at the inner side, and the second spool rod 522 and the second mounting bracket 524 are sequentially disposed in the second channel. The second spool 522 is identical in construction to the first spool 512 and is also a stepped rod construction, except that the two are oriented in opposite directions. The second mounting bracket 524 has the same structure as the first mounting bracket 514, and is also in a bowl-shaped structure, 3 second flow holes 5241 are formed in the second mounting bracket, a positioning hole for the tail of the second valve core rod 522 to pass through is formed in the center of the second mounting bracket, the second sealing element 525 is a sealing ring and sleeved on the conical head of the second valve core rod 522, and the second elastic element 523 can adopt a compression spring and is sleeved on the second valve core rod 522 and positioned between the head of the second valve core rod 522 and the second mounting bracket 524.

The second elastic member 523 has an initial state of intercepting the second passage and a compressed state of conducting the second passage. Referring to fig. 7, the second elastic member 523 is in an initial state, and an outer surface of the second sealing member 525 contacts an inner surface of the second passage, thereby intercepting the second passage. Referring to fig. 8, the second elastic member 523 is in a compressed state, and a gap is formed between an outer surface of the second sealing member 525 and an inner surface of the second passage, thereby communicating the second passage.

It is easily understood that the initial state is a pre-compressed state such that the outer surface of the second sealing member 525 is in close contact with the inner surface of the second passage, ensuring sealability when the female connector 52 is cut off.

The second valve body 521 is provided with a mounting hole, the limiting ball 528 is arranged in the mounting hole, specifically, the mounting hole is conical, the limiting ball 528 can only be placed in the mounting hole from the outer side of the second valve body 521, correspondingly, the outer surface of the first valve body 511 is provided with a positioning groove 5111, the positioning groove 5111 is matched with the limiting ball 528, and after the male connector 51 and the female connector 52 are in butt joint, the limiting ball 528 is clamped in the positioning groove 5111.

The cutting sleeve 526 is elastically sleeved on the outer side of the second valve body 521 through a third elastic piece 527, so that radial positioning of the limiting ball 528 is achieved, specifically, a limiting boss 5261 is arranged on the inner surface of the cutting sleeve 526, a mounting groove is formed in the second valve body 521, and a retainer ring 529 is mounted in the mounting groove.

Referring to fig. 8, when the female connector 52 is not connected to the male connector 51, the third elastic member 527 is in an initial state, and at this time, the top surface of the limiting boss 5261 abuts against the limiting ball 528, so that the upper portion of the limiting ball 528 extends into the second channel, and at the same time, the side surface of the limiting boss 5261 abuts against the retainer ring 529, so as to prevent the sleeve 526 from being separated from the second valve body 521.

Referring to fig. 9, when the female connector 52 is connected with the male connector 51, the ferrule 526 is moved rightward so that the third elastic member 527 is in a compressed state, and at this time, the limit boss 5261 is away from the retainer ring 529 to avoid the limit ball 528, and the limit ball 528 falls completely into the mounting hole, thereby facilitating insertion of the first valve body 511 of the male connector 51.

Meanwhile, the sealing ring 530 is disposed at the contact surface of the second valve body 521 and the first valve body 511, specifically, disposed in the groove of the second channel and located between the limit ball 528 and the second spool 522, and in order to ensure the sealing effect, the number of the sealing rings 530 is generally set to 2 or more.

Referring to fig. 10, when the male connector 51 is connected to the refrigerant filling port of the air conditioning unit, the outer surface of the first sealing member 515 is in close contact with the inner surface of the first channel to achieve self-sealing, and at this time, the refrigerant is located in the first channel between the first valve core rod 512 and the air conditioning unit.

Referring to fig. 11, when the female connector 52 is coupled to the delivery tube 1, the outer surface of the second sealing member 525 is in close contact with the inner surface of the second passage to achieve self-sealing, and at this time, the refrigerant is located in the second passage between the second valve stem 522 and the delivery tube 1.

Referring to fig. 12, when the male and female connectors 51 and 52 are butted, the first and second valve stems 512 and 522 are abutted against each other, compressing the first and second elastic members 513 and 523, at this time, a gap is formed between the outer surface of the first sealing member 515 and the inner surface of the first passage, and a gap is formed between the outer surface of the second sealing member 525 and the inner surface of the second passage, thereby connecting the first and second passages.

According to the air conditioner refrigerant filling quantity regulating device, the controller 4 receives the refrigerant quantity signal transmitted by the flowmeter 3, the opening of the electromagnetic valve 2 is controlled in real time, the quantitative control of the additional quantity or the discharge quantity of the refrigerant is realized, and meanwhile, the quick disassembly and assembly of the air conditioner refrigerant filling quantity regulating device and an air conditioner unit are realized through the quick connector 5, so that the operation efficiency is improved.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model. The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The air conditioner refrigerant filling quantity regulating device is characterized by comprising a conveying pipe (1) used for being connected with an air conditioner unit, wherein an electromagnetic valve (2) and a flowmeter (3) are sequentially arranged on the conveying pipe (1);

The electromagnetic valve (2) and the flowmeter (3) are respectively and electrically connected with the controller (4).

2. The air conditioner refrigerant filling amount regulating device according to claim 1, further comprising a quick connector (5) provided at one end of the conveying pipe (1);

the conveying pipe (1) is connected with the air conditioning unit through the quick connector (5).

3. The air conditioner refrigerant filling amount regulating device according to claim 2, wherein the quick connector (5) comprises a male connector (51) and a female connector (52);

The male connector (51) is used for being connected with the air conditioning unit, one end of the female connector (52) is connected with the conveying pipe (1), and the other end of the female connector is connected with the male connector (51).

4. The air conditioner refrigerant filling amount adjusting and controlling device according to claim 3, wherein: the male connector (51) comprises a first valve body (511), a first valve core rod (512), a first elastic piece (513), a first mounting bracket (514) and a first sealing piece (515);

The first valve core rod (512) and the first mounting bracket (514) are arranged in a first channel inside the first valve body (511), a first flow hole (5141) is formed in the first mounting bracket (514), the first valve core rod (512) is sleeved with the first sealing element (515), and the first elastic element (513) is arranged between the first valve core rod (512) and the first mounting bracket (514);

The first elastic member (513) is in an initial state, and an outer surface of the first sealing member (515) is in contact with an inner surface of the first channel; the first resilient member (513) is in a compressed state, and a gap is formed between an outer surface of the first seal member (515) and an inner surface of the first channel.

5. The air conditioner refrigerant filling amount adjusting and controlling device according to claim 4, wherein: the female joint (52) comprises a second valve body (521), a second valve core rod (522), a second elastic piece (523), a second mounting bracket (524) and a second sealing piece (525);

The second valve core rod (522) and the second mounting bracket (524) are arranged in a second channel inside the second valve body (521), a second flow hole (5241) is formed in the second mounting bracket (524), the second valve core rod (522) is sleeved with the second sealing element (525), and the second elastic element (523) is arranged between the second valve core rod (522) and the second mounting bracket (524);

the second elastic member (523) is in an initial state, and an outer surface of the second sealing member (525) is in contact with an inner surface of the second passage; when the second elastic member (523) is in a compressed state, a gap is formed between an outer surface of the second sealing member (525) and an inner surface of the second channel.

6. The air conditioner coolant filling amount adjusting and controlling device according to claim 5, wherein the female connector (52) further comprises a ferrule (526), a third elastic member (527), a limit ball (528) and a retainer ring (529);

The second valve body (521) is provided with a mounting hole, the limiting ball (528) is arranged in the mounting hole, the outer surface of the first valve body (511) is provided with a positioning groove (5111), and the positioning groove (5111) is matched with the limiting ball (528);

The clamping sleeve (526) is sleeved outside the second valve body (521), and the third elastic piece (527) is arranged between the clamping sleeve (526) and the second valve body (521);

A limiting boss (5261) is arranged on the inner surface of the clamping sleeve (526), a mounting groove is further formed in the second valve body (521), and the retainer ring (529) is mounted in the mounting groove;

The third elastic piece (527) is in an initial state, the top surface of the limit boss (5261) is in contact with the limit ball (528), and the side surface of the limit boss (5261) is in contact with the retainer ring (529); the third elastic piece (527) is in a compressed state, and the limit boss (5261) is far away from the check ring (529) so as to avoid the limit ball (528).

7. The air conditioner coolant filling amount control device according to claim 6, wherein the female joint (52) further comprises at least one sealing ring (530), and the sealing ring (530) is disposed at a contact surface where the second valve body (521) is connected to the first valve body (511).

8. The air conditioner refrigerant filling amount regulating device according to claim 1, wherein the electromagnetic valve (2) is an electronic expansion valve.

9. The air conditioner coolant filling amount adjusting and controlling device according to claim 8, wherein: the flowmeter (3) is a mass flowmeter.

10. The air conditioner refrigerant filling amount regulating device according to claim 9, wherein the controller (4) is a PLC control display screen.