CN106840549A - A kind of detection of air-conditioning device - Google Patents

A kind of detection of air-conditioning device Download PDF

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Publication number
CN106840549A
CN106840549A CN201611249752.7A CN201611249752A CN106840549A CN 106840549 A CN106840549 A CN 106840549A CN 201611249752 A CN201611249752 A CN 201611249752A CN 106840549 A CN106840549 A CN 106840549A
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China
Prior art keywords
air
conditioning
magnetic valve
branch road
valve
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Granted
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CN201611249752.7A
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Chinese (zh)
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CN106840549B (en
Inventor
黄焕文
韩义
於永
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Huawei Digital Power Technologies Co Ltd
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Huawei Digital Technologies Suzhou Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The embodiment of the invention discloses a kind of detection of air-conditioning device, it is related to electronic technology field, very big noise is produced when can solve the problems, such as to discharge the nitrogen in air-conditioning duct.Concrete scheme is：Detection of air-conditioning device includes：Inflation branch road, at least one air-conditioning branch road, exhaust branch and control module；Inflation branch road, at least one air-conditioning branch road, exhaust branch are connected with control module；At least one air-conditioning branch road connects air-conditioning, and inflation branch road includes nitrogen cylinder, and exhaust branch includes capillary；Control module, for after at least one air-conditioning branch road connection air-conditioning, control inflation branch road is in the conduction state, control nitrogen cylinder output nitrogen, control exhaust branch is closed, until when the pressure value in the air-conditioning is more than first pressure value, controlling the inflation branch road to be closed, the nitrogen cylinder is controlled to stop output nitrogen；After the first Preset Time, control exhaust branch is in the conduction state.During the embodiment of the present invention is applied to air-conditioning installation and detection.

Description

A kind of detection of air-conditioning device
Technical field
The present embodiments relate to electronic technology field, more particularly to a kind of detection of air-conditioning device.
Background technology
Air-conditioning duct in air-conditioning is used for the circulation for supporting the air-conditioning to use process medium fluid (such as refrigerant).In order to ensure The sealing of air-conditioning air-conditioning duct in use, sealing that can be when air-conditioning is installed to air-conditioning duct detects, Or can be during the use of air-conditioning, regularly the sealing to its air-conditioning duct is detected.
Sealing that in the prior art can be to air-conditioning duct by the way of nitrogen charging pressurize is carried out to air-conditioning duct is carried out Check.Specifically, testing staff can couple together nitrogen charging pressurize equipment (including nitrogen cylinder) with air-conditioning duct, and control nitrogen Gas cylinder exports nitrogen to air-conditioning duct, until when the pressure value in air-conditioning duct reaches preset pressure value, stopping to air-conditioning duct Output nitrogen；The pressure value in air-conditioning duct is detected after a certain time；If the difference of the pressure value for detecting and preset pressure value Value is less than or equal to predetermined threshold value, it is determined that air-conditioning duct sealing is good；If the pressure value for detecting and preset pressure value Difference is more than predetermined threshold value, it is determined that air-conditioning duct sealing is poor, it is necessary to carry out pipeline maintenance；Control air-conditioning duct discharge is empty Adjust the nitrogen in pipeline.
The problem of presence is, in the prior art, during above-mentioned " nitrogen in discharge air-conditioning duct ", due to air-conditioning The pressure of nitrogen is much larger than standard atmospheric pressure (i.e. 1.013 × 10^5 Pascals (English in pipeline：Pascal, referred to as：Pa)), i.e., There is larger pressure differential in nitrogen and air in air-conditioning duct；Therefore the nitrogen discharge in air-conditioning duct in air when can produce The very big noise of life.
The content of the invention
The application provides a kind of detection of air-conditioning device, can reduce the noise produced when nitrogen in air-conditioning duct is discharged.
To reach above-mentioned purpose, originally adopt the following technical scheme that：
The first aspect of the application, there is provided a kind of detection of air-conditioning device, the device includes：Inflation branch road, at least one sky Adjust branch road, exhaust branch and control module.Inflation branch road, at least one air-conditioning branch road and exhaust branch are connected by main road node Connect, the inflation branch road, at least one air-conditioning branch road and the exhaust branch are connected with control module；At least one air-conditioning branch road Connection air-conditioning, inflation branch road includes nitrogen cylinder, and exhaust branch includes capillary；Control module, at least one air-conditioning branch After road connection air-conditioning, control inflation branch road is in the conduction state, control nitrogen cylinder output nitrogen, and control exhaust branch is in closes State, until when the pressure value in the air-conditioning is more than first pressure value, controlling the inflation branch road to be closed, controls the nitrogen Gas cylinder stops output nitrogen；After the first Preset Time, control exhaust branch is in the conduction state.
Wherein, the exhaust branch of the detection of air-conditioning device in the embodiment of the present invention includes capillary, because capillary is one Kind of diameter very little, length is more long and pipeline (such as single copper pipe) with certain degree of hardness, therefore, installed in testing staff and detection is empty During tune, even if the pressure of nitrogen is much larger than standard atmospheric pressure in air-conditioning duct, as long as nitrogen is by row in air-conditioning duct Capillary discharge in gas branch road, just can reduce its pressure, reduce the pressure differential of the nitrogen and air in air-conditioning duct；And The nitrogen discharged can be shunted by capillary, reduce the flow of the nitrogen of discharge.So just can reduce air-conditioner pipe The noise produced when nitrogen is discharged in road.
In a kind of possible implementation, above-mentioned detection of air-conditioning device includes：Inflation branch road, at least one air-conditioning branch Road, exhaust branch and control module.The inflation branch road includes：Nitrogen cylinder, pressure control unit, the first magnetic valve contacted successively With the first check valve, first check valve the other end connection main road node, the valve direction of first magnetic valve and this first The valve direction of check valve is first check valve to the direction of the main road node；Each in above-mentioned at least one air-conditioning branch road Air-conditioning branch road includes：Air-conditioning interface and first pressure table, one end of the air-conditioning interface connect the first pressure table and the main road section Point, the other end connection air-conditioning of the air-conditioning interface；The exhaust branch includes：The second magnetic valve, the second check valve being sequentially connected And capillary, the other end of second magnetic valve connects the main road node, the valve side of second magnetic valve and the second check valve To the opposite direction for second magnetic valve to the main road node；The control module, for after the air-conditioning interface connects the air-conditioning, Control the nitrogen cylinder to export nitrogen by the pressure control unit, control first magnetic valve to be in opening, control this Two magnetic valves are closed, until when the first pressure table indicates the pressure value in the air-conditioning to be more than first pressure value, leading to Crossing the pressure control unit controls the nitrogen cylinder to stop output nitrogen, controls first magnetic valve to switch to closing by opening State；After the first Preset Time, second magnetic valve is controlled to switch to opening by closed mode.
Wherein, magnetic valve (such as the first magnetic valve or the second magnetic valve) can be used for branch road in control detection of air-conditioning device (as inflation branch road or exhaust branch) be turned on and off；Check valve can only one-way conduction, can be used for control nitrogen stream Logical direction, prevents nitrogen from inversely being circulated in each branch road.Detection of air-conditioning device in the embodiment of the present invention can be by control Module controls magnetic valve and check valve on each branch road to be turned on or off, and nitrogen charging pressurize is carried out to air-conditioning duct, and detection is empty Adjust the sealing of pipeline, and the nitrogen in discharge air-conditioning duct after nitrogen charging pressurize.
In a kind of possible implementation, each the air-conditioning branch road in above-mentioned at least one air-conditioning branch road can also be wrapped Include：3rd magnetic valve and the 4th magnetic valve.One end of 3rd magnetic valve connects the main road node, the 3rd magnetic valve it is another One end of the 4th magnetic valve of end connection, the other end of the 4th magnetic valve connects one end of the pressure gauge and the air-conditioning interface； The valve direction of the 3rd magnetic valve is in opposite direction with the valve of the 4th magnetic valve；The control module is additionally operable to be connect in the air-conditioning After mouth connects the air-conditioning, control the nitrogen cylinder to export nitrogen by the pressure control unit, control the first magnetic valve, the 3rd Magnetic valve and the 4th magnetic valve are in opening, control second magnetic valve to be closed, until the first pressure When table indicates the pressure value in the air-conditioning to be more than first pressure value, the nitrogen cylinder is controlled to stop output by the pressure control unit Nitrogen, controls first magnetic valve, the 3rd magnetic valve and the 4th magnetic valve to switch to closed mode by opening； After one Preset Time, second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve is controlled to switch to unlatching by closed mode State.Wherein, the valve of the valve direction of the 3rd magnetic valve and the 4th magnetic valve is in opposite direction, can efficiently control air-conditioning branch Road is turned on and off.For example, conducting or pass by controlling the 3rd magnetic valve and the 4th magnetic valve on each air-conditioning branch road Close, can optionally control being turned on and off for any air-conditioning branch road at least two air-conditioning branch roads.
In a kind of possible implementation, there is provided a kind of detection of air-conditioning device also includes：Vacuumize branch road.This is vacuumized Branch road includes：Vavuum pump, the 5th magnetic valve, second pressure table and the 6th magnetic valve being sequentially connected in series, the 6th magnetic valve it is another One end connects the main road node, and the valve of the 5th magnetic valve and the valve of the 6th magnetic valve are in opposite direction.Control module is also Discharged via exhaust branch for the nitrogen in the air-conditioning, the first pressure table indicates the pressure value in the air-conditioning to be less than second After pressure value, the second magnetic valve of control switches to closed mode by opening, controls the 5th magnetic valve and the 6th electromagnetism Valve is in opening, and controls the vavuum pump to operate, and the gas in the air-conditioning is extracted, until the second pressure table indicates this to take out When pressure value in vacuum branch road is less than three pressure values, control the vavuum pump to shut down, control the 5th magnetic valve and be somebody's turn to do 6th magnetic valve switches to closed mode by opening.
Wherein, after nitrogen of the detection of air-conditioning device in nitrogen charging pressurize and in discharging air-conditioning duct, air-conditioning duct and air-conditioning are examined In the air-conditioning branch road surveyed in device may also remaining have part nitrogen, vacuumizing branch road and can extract out in the embodiment of the present invention State the part nitrogen of remaining in air-conditioning branch road.Also, the above-mentioned branch road that vacuumizes is to air-conditioning in air-conditioning duct and detection of air-conditioning device Branch road is performed after vacuumizing a period of time, can cause the pressure in air-conditioning branch road and air-conditioning duct much smaller than standard atmospheric pressure, So be conducive to the filling of lubricating oil or refrigerant.
In a kind of possible implementation, in order to avoid the abrasion due to each device in air-conditioning causes air-conditioning event Barrier, the detection of air-conditioning device in the embodiment of the present invention can also fill lubricating oil for air-conditioning, to reduce the abrasion of above-mentioned each device Situation, extend the service life of these devices.Specifically, above-mentioned detection of air-conditioning device can also include：Lubrication branch road.The profit Sliding branch road includes：Lubricating can, the 7th magnetic valve and the 8th magnetic valve being sequentially connected in series, lubricating oil is connected with the lubricating can Meter, the other end of the 8th magnetic valve connects the main road node, valve and the 8th magnetic valve of the 7th magnetic valve Valve is in opposite direction.The pressure value that control module is additionally operable in second pressure table indicates to vacuumize branch road is less than the 3rd pressure value Afterwards, the 7th magnetic valve and the 8th magnetic valve is controlled to be in opening, to convey lubricating oil from the lubricating can to air-conditioning, Until when the lubrication fuel filling measurer indicates the oil mass of conveying to be more than or equal to default oil mass threshold value, control the 7th magnetic valve and 8th magnetic valve switches to closed mode by opening.
In a kind of possible implementation, after lubricating oil is filled for air-conditioning duct, detection of air-conditioning device can also be should Air-conditioning duct fills refrigerant, and the efficiency of refrigerant is filled to improve, and can extract the air (vacuumizing) in the air-conditioning duct, makes The pressure value for obtaining the air-conditioning duct is less than standard atmospheric pressure；But, when vacuumizing, lubricating oil in air-conditioning duct may be with The gas in air-conditioning duct is extracted air-conditioning duct.All lubricating oil in order to avoid air-conditioning duct are all extracted air-conditioner pipe Road, each air-conditioning branch road at least one air-conditioning branch road can also include：Fluid reservoir.The fluid reservoir is connected to the 4th magnetic valve Between air-conditioning interface.
In a kind of possible implementation, above-mentioned control module can be also used for indicating to convey in the lubrication fuel filling measurer Oil mass be more than or equal to default oil mass threshold value after, control the 5th magnetic valve and the 6th magnetic valve to be switched by closed mode To opening, and control the vavuum pump to start running, extract the gas in air-conditioning, until second pressure table indicates to vacuumize branch When pressure value in road is less than four pressure values, the 5th magnetic valve of control and the 6th magnetic valve switch to closing shape by opening State.
Wherein, the 4th pressure value is less than standard atmospheric pressure, and the pressure value in second pressure table indicates to vacuumize branch road is small When four pressure values, then it represents that the pressure in air-conditioning duct is much smaller than standard atmospheric pressure, is conducive to subsequently for air-conditioning duct fills Refrigerant.
In a kind of possible implementation, refrigerant (i.e. refrigerant) is needed to use to transmit heat during due to air-conditioning normal work Can simultaneously produce refrigeration, thus in order to ensure air-conditioning can normal work, can be when air-conditioning be installed in its air-conditioning duct It is filled with refrigerant, or can be during the use of air-conditioning, regularly to being filled with refrigerant in its air-conditioning duct.Specifically, above-mentioned Detection of air-conditioning device can also include：Refrigerant branch road.The refrigerant branch road includes：The refrigerant tank that is sequentially connected in series, the 9th magnetic valve and Tenth magnetic valve.Refrigerant meter is connected with the refrigerant tank, the other end of the tenth magnetic valve connects the main road node, this The valve direction of nine magnetic valves and the valve of the tenth magnetic valve are in opposite direction.Control module can be also used for the pressure in air-conditioning Force value less than after the 5th pressure value, controlling the 9th magnetic valve and the tenth magnetic valve to be in opening, with from refrigerant tank to The air-conditioning (air-conditioning duct of the air-conditioning) conveys refrigerant, until the refrigerant meter indicates the coolant quantity of conveying to be more than or equal to During default refrigerant threshold value, the 9th magnetic valve and the tenth magnetic valve is controlled to switch to closed mode by opening.
In a kind of possible implementation, in order to rise to the efficiency that air-conditioning duct fills refrigerant, in the embodiment of the present invention Detection of air-conditioning device refrigerant branch road in can also include for the heating module that is heated to refrigerant tank.The detection of air-conditioning Device can be heated by the heating module to refrigerant tank, the refrigerant in the refrigerant tank is quickly filled with air-conditioner pipe Road.
Detection of air-conditioning device provided in an embodiment of the present invention, can be not only used for detecting the sealing of air-conditioning duct, may be used also It is that air-conditioning duct fills lubricating oil and refrigerant to extract the gas in air-conditioning duct.
Brief description of the drawings
Fig. 1 is a kind of composition schematic diagram of detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 2 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 3 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 4 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 5 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 6 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 7 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 8 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Fig. 9 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention；
Figure 10 is a kind of composition schematic diagram of refrigerant branch road provided in an embodiment of the present invention；
Figure 11 is the composition schematic diagram of another refrigerant branch road provided in an embodiment of the present invention；
Figure 12 is the composition schematic diagram of another detection of air-conditioning device provided in an embodiment of the present invention.
Specific embodiment
Detection of air-conditioning device provided in an embodiment of the present invention can apply to detect the close of air-conditioning duct when air-conditioning is installed During envelope property, or when can apply to maintenance air-conditioning, during detecting the sealing of air-conditioning duct.Specifically, this The detection of air-conditioning device that inventive embodiments are provided, can be detecting sky for air-conditioning duct inflated with nitrogen and by way of discharging nitrogen When adjusting the sealing of pipeline, the noise produced during the nitrogen in discharge air-conditioning duct is reduced.
A kind of detection of air-conditioning device provided in an embodiment of the present invention can include：Inflation branch road, at least one air-conditioning branch road And exhaust branch；Inflation branch road, at least one air-conditioning branch road and exhaust branch are connected by main road node, the inflation branch road, this At least one air-conditioning branch road and the exhaust branch are connected with control module；At least one air-conditioning branch road connects air-conditioning, inflation branch Road includes nitrogen cylinder, and exhaust branch includes capillary.
Wherein, nitrogen cylinder is used to export nitrogen, and the nitrogen stored in the nitrogen cylinder is typically gases at high pressure.Due to nitrogen Chemical property torpescence, will not typically chemically react under normal temperature with other materials (such as water, oxygen), therefore nitrogen can be made It is the gas of signal piping (such as air-conditioning duct) sealing.
Wherein, capillary is that a kind of diameter very little, length is more long and pipeline (such as single copper pipe) with certain degree of hardness, can be with Gas by the capillary is shunted, and reduces the flow by the gas of the capillary.
Above-mentioned control module can be processor or controller, for example, can be central processing unit (English：Central Processing Unit, referred to as：CPU), general processor, digital signal processor (English：Digital Signal Processor, referred to as：DSP), application specific integrated circuit (English：Application-Specific Integrated Circuit, referred to as：ASIC), field programmable gate array (English：Field Programmable Gate Array, referred to as： FPGA) or other PLDs, transistor logic, hardware component or its any combination.It can be realized Or execution combines the various illustration modules and circuit described by embodiment of the present invention disclosure, for example, control module can For control inflation branch road output nitrogen, control air-conditioning branch road is in the conduction state or is closed, and can also control Exhaust branch discharges the gas in above-mentioned air-conditioning branch road and air-conditioning duct.Control module can also realize the group of computing function Close, for example, combined comprising one or more microprocessors, combination of DSP and microprocessor etc..
Above-mentioned control module, after at least one air-conditioning branch road connection air-conditioning, can control inflation branch road to be on shape State, control nitrogen cylinder output nitrogen, control exhaust branch is closed, until the pressure value in the air-conditioning is more than the first pressure During force value, control the inflation branch road to be closed, control the nitrogen cylinder to stop output nitrogen；After the first Preset Time, Control exhaust branch is in the conduction state.Wherein, the first Preset Time and first pressure value can pre-set.
The exhaust branch of the detection of air-conditioning device in the embodiment of the present invention includes capillary, because capillary is a kind of diameter Very little, length is more long and pipeline with certain degree of hardness, therefore, testing staff install and detection air-conditioning during, even if The pressure of nitrogen is much larger than standard atmospheric pressure in air-conditioning duct, as long as nitrogen is by the capillary in exhaust branch in air-conditioning duct Discharge, just can reduce its pressure, reduce the pressure differential of the nitrogen and air in air-conditioning duct；And can be by capillary pair The nitrogen of discharge is shunted, and reduces the flow of the nitrogen of discharge.Just can so reduce when nitrogen in air-conditioning duct is discharged and produce Raw noise.
Specifically, Fig. 1 is refer to, it illustrates a kind of composition of detection of air-conditioning device 100 provided in an embodiment of the present invention Schematic diagram.As shown in figure 1, the detection of air-conditioning device 100, including：Inflation branch road 10, air-conditioning branch road 20, exhaust branch 30, control Module 40 and main road node 50.
Above-mentioned inflation branch road 10 includes：Nitrogen cylinder 11, pressure control unit 12, the first magnetic valve 13 and contacted successively One check valve 14.The valve direction of the valve direction of above-mentioned first magnetic valve 13 and the first check valve 14 is arrived for the first check valve 14 The direction of the main road node 50.
It should be noted that the side that valve direction can be circulated for valve when valve is in opening with support fluid To.
As shown in Fig. 2 the port 111 of nitrogen cylinder 11 is the port of the nitrogen output in the nitrogen cylinder 11, the port 111 connects Connect pressure control unit 12.
Optionally, above-mentioned nitrogen cylinder 11 can also be and is connected with the detection of air-conditioning device 100 by pipeline (such as leather hose) External devices.
Pressure control unit 12 is used to control the flow of the nitrogen from the output of nitrogen cylinder 11.Due to the nitrogen in nitrogen cylinder 11 It is gases at high pressure, so if the moment of nitrogen cylinder 11 exports the gases at high pressure of larger flow, may be to detection of air-conditioning device 100 Connecting line and/or the first magnetic valve 13 are impacted, and damage the connecting line or the first magnetic valve of detection of air-conditioning device 100 13.The flow of the nitrogen that can control to be exported from nitrogen cylinder 11 by pressure control unit 12, to control to be exported from nitrogen cylinder 11 Nitrogen pressure value, such that it is able to avoid the moment of nitrogen cylinder 11 from exporting the gases at high pressure of larger flow, and then sky can be protected Adjust the connecting line or the first magnetic valve 13 of detection means 100.
It should be noted that inflating branch road 10, at least one air-conditioning branch road 20, exhaust branch in detection of air-conditioning device 100 Each device in 30 in any branch road, can be connected by connecting line, and the connecting line can be leather hose.As shown in figure 1, For ease of representing, only connecting line is represented with black fine line in Fig. 1.
Further, as shown in Fig. 2 pressure control unit 12 can include：Pressure-reducing valve 121 and needle-valve 122.Wherein, subtract Pressure valve 121 be one kind can by changing orifice size, change by the gas (such as nitrogen) of the pressure-reducing valve 121 pressure value and The throttling device of flow.Pressure-reducing valve 121 can allow nitrogen by end as shown in Figure 2 with directionality, i.e. pressure-reducing valve 121 Mouth 1211 flows to port 1212, without allowing nitrogen to flow to port 1211 by port 1212.Wherein, the port of pressure-reducing valve 121 1211 connection nitrogen cylinders 11, port 1212 connects the first magnetic valve 13.Above-mentioned pressure-reducing valve 121 can be reduced and exported by nitrogen cylinder 11 And by pressure-reducing valve 121 high pressure nitrogen pressure value and flow.
Wherein, needle-valve is a kind of reset valve, and its valve plug is aciculiform, the valve port of the needle-valve can from close gradually open up to Fully open, such that it is able to continuously fine adjust the flow by the nitrogen of needle-valve.I.e. needle-valve 122 can be in pressure-reducing valve 121 After the pressure value and flow of the nitrogen of the regulation output of nitrogen cylinder 11, pressure value and flow to inflating the nitrogen in branch road carry out micro- Adjust, can further reduce the pressure of the above-mentioned nitrogen by pressure control unit 12, and reduce the flow of above-mentioned nitrogen.
Specifically, the port 1221 of needle-valve 122 connects the pressure-reducing valve 121, port 1222 connects the first magnetic valve 13.Needle-valve 122 valve direction is the direction of needle-valve 122 to the direction of main road node 50, i.e. port 1221 to port 1222.
Above-mentioned first magnetic valve 13 can be used for being turned on and off for control inflation branch road 10.Detection of air-conditioning device 100 can The first magnetic valve 13 is controlled to be in opening or be closed with by control module 40, to control to inflate branch road 10 On and off.Wherein, the connection of port 131 pressure control module 12 of the first magnetic valve 13, port 132 connects the first check valve 14.The valve direction of the first magnetic valve 13 is that the first magnetic valve 13 arrives port 132 to the direction of main road node 50, i.e. port 131 Direction.
Above-mentioned first check valve 14 can only one-way conduction, can be used for control nitrogen circulating direction, prevent nitrogen each Inversely circulated in individual branch road.Specifically, when the nitrogen of nitrogen cylinder output is by the magnetic valve 13 of pressure control unit 12 and first, arriving Up to the first check valve 14 port 141 when, due to the first check valve 14 the side of port 141 pressure value be more than the first check valve 14 The side of port 142 pressure value, therefore the first check valve 14 opens and allows nitrogen by the first check valve 14, and by first The port 142 of check valve 14 flows to main road node 50.
Above-mentioned air-conditioning branch road 20 can include：Air-conditioning interface 21 and first pressure table 22.Wherein, as shown in Fig. 2 air-conditioning connects The port 211 of mouth 21 connects main road node 50 and first pressure table 22, the connection of port 212 air-conditioning 60 of air-conditioning interface 21.First The pressure value of the gas in the air-conditioning branch road that pressure gauge 22 is used for where detecting first pressure table 22.Wherein, air-conditioning branch road 20 can With including air-conditioning branch road a and air-conditioning branch road b.The connection air-conditioning 60 of air-conditioning branch road 20 can be the air-conditioning interface 21 in air-conditioning branch road 20 Connection air-conditioning 60.
In air-conditioning duct of the above-mentioned exhaust branch 30 in inflation branch road 10 to air-conditioning branch road 20 and air-conditioning 60 after inflated with nitrogen, The gas in the air-conditioning duct of air-conditioning branch road 20 and air-conditioning 60 can be discharged.Specifically, exhaust branch 30 includes：It is sequentially connected in series Second magnetic valve 31, the second check valve 32 and capillary 33.Wherein, the port 311 of the second magnetic valve 31 connects the second check valve 32 port 321, the connection of port 322 capillary 33 of the second check valve 32, the connection of the port 312 main road section of the second magnetic valve 31 Point 50.
As shown in Fig. 2 the valve direction of the second magnetic valve 31 and the second check valve 32 is the second magnetic valve 31 to main road section The opposite direction of point 50.
The air-conditioning interface 21 that control module 40 is used in air-conditioning branch road 20 connects the air-conditioning duct of air-conditioning 60, and such as air-conditioning connects Behind the port 61 of the air-conditioning duct of the connection of port 212 air-conditioning 60 of mouth 21, the nitrogen cylinder 11 is controlled by pressure control unit 12 Output nitrogen, the first magnetic valve of control 13 is in opening, and the second magnetic valve 31 of control is closed, until the first pressure When pressure value is more than first pressure value in the air-conditioning duct of the instruction air-conditioning 60 of power table 22, after the first Preset Time, control second Magnetic valve 31 switches to opening by closed mode.
Wherein, the first Preset Time is inflated with nitrogen in the air-conditioning duct and air-conditioning branch road 20 in inflation branch road 10 to air-conditioning 60 Afterwards, the time that the nitrogen in the air-conditioning duct of air-conditioning 60 and air-conditioning branch road 20 is preserved, such as first Preset Time could be arranged to 20 hours.When first pressure value is the sealing of the air-conditioning duct of the detection air-conditioning 60 of detection of air-conditioning device 100, nitrogen charging pressurize The pressure value needed in the air-conditioning duct of air-conditioning 60 in journey, the first pressure value is more than standard atmospheric pressure.
Wherein, when detection of air-conditioning device 100 for air-conditioning 60 air-conditioning duct inflated with nitrogen and close inflation branch road 10 after, if In the first Preset Time, the pressure value in the air-conditioning duct of air-conditioning 60 is varied widely, i.e. the air-conditioning duct of air-conditioning 60 In pressure value change in pre-set pressure range, then it represents that the sealing of the air-conditioning duct of air-conditioning 60 is good；When air-conditioning inspection Survey device 100 for air-conditioning 60 air-conditioning duct inflated with nitrogen and close inflation branch road 10 after, if in the first Preset Time, the sky The pressure value in pipeline is adjusted to vary widely, i.e. the change of the pressure value in air-conditioning duct exceeds pre-set pressure range, then table Show that the sealing of the air-conditioning duct of air-conditioning 60 is poor, it is necessary to be overhauled.
Exemplary, the mode of operation of the detection of air-conditioning device 100 in the embodiment of the present invention can include modes of inflation, protect Nitrogen mode and exhaust mode.Wherein, when detection of air-conditioning device 100 is operated in different mode of operations, detection of air-conditioning device 100 can control each valve or device to be in different states.
Wherein, after air-conditioning interface 21 connects air-conditioning 60, detection of air-conditioning device 100 can then be operated in modes of inflation. Under modes of inflation, detection of air-conditioning device 100 can be in opening by control module 40, control pressure control unit 12, So that the output nitrogen of nitrogen cylinder 11, and control the first magnetic valve 13 to be in opening.Now, in order to avoid nitrogen is by being vented Branch road 30 is discharged, and detection of air-conditioning device 100 can control the second magnetic valve 31 to be closed by control module 40.
As shown in table 1, it is the device state table of each valve or device under modes of inflation in detection of air-conditioning device 100 Example.
Table 1
Wherein, as shown in table 1, when pressure-reducing valve 121 is in opening, needle-valve 122 is in the conduction state, the first magnetic valve 13 are in opening, and the first check valve 14 is in the conduction state, and the second magnetic valve 31 is closed, the second check valve 32 In when not turning on state, inflation branch road and air-conditioning branch road 20 as shown in Figure 2 is in the conduction state, and exhaust branch 30 is in Closed mode.Now, inflation branch road 10 can by air-conditioning duct inflated with nitrogen from air-conditioning branch road 20 to air-conditioning 60.
In the case where nitrogen mode is protected, detection of air-conditioning device 100 can be by control module 40, at control pressure control unit 12 In closed mode, and the first magnetic valve 13 is controlled to be closed so that inflation branch road 10 stops output nitrogen.In order to avoid Nitrogen is discharged by exhaust branch 30, and detection of air-conditioning device 100 can control the second magnetic valve 31 to be in by control module 40 Closed mode.
As shown in table 2, it is the device state of each valve or device in the case where nitrogen mode is protected in detection of air-conditioning device 100 Table example.
Table 2
Wherein, as shown in table 2, when pressure-reducing valve 121 is closed, the first magnetic valve 13 is closed, and first Check valve 14 is in and does not turn on state, and the second magnetic valve 31 is closed, and the second check valve 32 is in when not turning on state, Inflation branch road as shown in Figure 2 and exhaust branch are closed.Now, inflation branch road can stop to air-conditioning inflated with nitrogen, And the nitrogen in air-conditioning duct is also impossible to be discharged by air-conditioning branch road and exhaust branch.
Under exhaust mode, detection of air-conditioning device 100 can be in by control module 40, control pressure control unit 12 Closed mode, and control the first magnetic valve 13 to be closed, i.e., control inflation branch road 10 stops output nitrogen；And by control Second magnetic valve of the control of molding block 40 31 is in opening so that the second check valve 32 is in the conduction state.Now, air-conditioning 60 Air-conditioning duct in nitrogen can be discharged by exhaust branch 30.
As shown in table 3, it is the device state table of each valve or device under exhaust mode in detection of air-conditioning device 100 Example：
Table 3
Wherein, as shown in table 3, when pressure-reducing valve 121 is closed, the first magnetic valve 13 is closed, and first Check valve 14 is in and does not turn on state, and the second magnetic valve 31 is in opening, when the second check valve 32 is in the conduction state, such as Inflation branch road 10 shown in Fig. 2 is closed, and exhaust branch 30 is in opening.Now, the air-conditioner pipe of air-conditioning 60 Nitrogen in road can be discharged by air-conditioning branch road 20 and exhaust branch 30.
It should be noted that control module 40 can connect inflation branch road 10, at least one air-conditioning branch road by control line 20 and exhaust branch 30.Wherein, for ease of representing, only above-mentioned control line is represented with black heavy line in Fig. 1 and Fig. 2.
The nitrogen that detection of air-conditioning device 100 in the embodiment of the present invention can be discharged by capillary 33 to exhaust branch 30 Shunted, reduced the flow of the nitrogen of discharge, the noise produced when being discharged with nitrogen in the air-conditioning duct for reducing air-conditioning 60.And And, magnetic valve (such as the first magnetic valve 13 or the second magnetic valve 31) can be used in control detection of air-conditioning device 100 branch road (such as Inflation branch road 10 or exhaust branch 30) be turned on and off.Check valve (such as the first check valve 14 or the second check valve 32) Can only one-way conduction, can be used for control gas circulating direction, prevent nitrogen from inversely being circulated in each branch road.It is of the invention real Apply detection of air-conditioning device 100 in example can be controlled by control module 40 magnetic valve and check valve on each branch road open or Person is closed, and nitrogen charging pressurize is carried out to air-conditioning duct, detects the sealing of air-conditioning duct, and discharges air-conditioning duct after nitrogen charging pressurize In nitrogen.
Further, in order to avoid use detection of air-conditioning device 100 detect air-conditioning during there is chance failure, this hair Manual ball valve can be set in detection of air-conditioning device 100 in bright embodiment so that testing staff can manually control the air-conditioning Each branch road in detection means 100.Wherein, manual ball valve is that one kind can be used for manually controls fluid (such as nitrogen) circulation Device.Manual ball valve does not have directionality.
Fig. 3 is refer to, it illustrates a kind of composition schematic diagram of detection of air-conditioning device 100 provided in an embodiment of the present invention. As shown in figure 3, pressure control unit 12 can also include manual ball valve 123, one end of manual ball valve 123 connects nitrogen cylinder 11, The other end connects pressure-reducing valve 123.Manual ball valve 15, one end connection needle-valve of manual ball valve 15 can also be included in inflation branch road 10 122, the other end connects the first magnetic valve 13.Manual ball valve 23 and needle-valve 24, manual ball valve can also be included in air-conditioning branch road 20 23 one end connects air-conditioning interface 21, and other end connection air-conditioning 60, needle-valve 24 is connected to first pressure table 22 and main road node 50 Between.Exhaust branch 30 can also include manual ball valve 34, and one end of manual ball valve 34 connects main road node 50, other end connection Second magnetic valve 31.Main road node 50 can also be connected with the 3rd pressure gauge 51 and needle-valve 52, and needle-valve 52 is connected to main road node 50 and the 3rd between pressure gauge 51, and the 3rd pressure gauge 51 can detect the pressure value of the gas more than standard atmospheric pressure.
It should be noted that when detection of air-conditioning device 100 is operated in any of the above-described mode of operation, in the embodiment of the present invention Manual ball valve be in opening.
Further, as shown in figure 4, air-conditioning branch road 20 as shown in Figure 2 can also include：3rd magnetic valve 25 and the 4th Magnetic valve 26.Wherein, the connection of the port 251 main road node 50 of the 3rd magnetic valve 25, the connection of port 252 of the 3rd magnetic valve 25 the The port 261 of four magnetic valves 26, the port 262 of the 4th magnetic valve 26 connects first pressure table 22 and air-conditioning interface 21.Wherein, The valve direction of three magnetic valves 25 and the valve of the 4th magnetic valve 26 are in opposite direction.
Wherein, control module 40 can also be controlled at the 3rd magnetic valve 25 and the 4th magnetic valve 26 under above-mentioned modes of inflation In opening, until when first pressure table 22 indicates the pressure value in the air-conditioning duct of air-conditioning 60 to be more than first pressure value, i.e., The 3rd magnetic valve 25 and the 4th magnetic valve 26 is controlled to switch to closed mode by opening in the case where nitrogen mode is protected；It is pre- first If after the time, i.e., under exhaust mode, the 3rd magnetic valve 25 of control and the 4th magnetic valve 26 switch to opening by closed mode.
Because magnetic valve is merely able to one direction shut-off, therefore when a magnetic valve is only set on an air-conditioning branch road, then may be used Can exist i.e. turn off the magnetic valve so that nitrogen can not along the magnetic valve valve direction circulate, nitrogen can also edge The problem of the opposite direction circulation in the valve direction of the magnetic valve.For example, to only include the 4th magnetic valve 26 on air-conditioning branch road a, As a example by including the 3rd magnetic valve 25, in the case where nitrogen mode is protected, even if control module 40 controls the 4th magnetic valve 26 by opening State switches to closed mode, but due to the valve direction of the 4th magnetic valve 26 be by the 4th magnetic valve 26 port 261 to The direction of port 262, thus closing off nitrogen that the 4th magnetic valve 26 can only ensure in air-conditioning duct cannot be by the 4th electromagnetism The outflow port 262 of port 261 of valve 26, is unable to avoid the nitrogen of the side of port 262 of the 4th magnetic valve 26 by the 4th electricity The outflow port 261 of port 262 of magnet valve 26.In this way, then can not accurately detect the sealing of the air-conditioning duct of air-conditioning 60.
As shown in figure 4, including two valve sides on the air-conditioning branch road 20 of detection of air-conditioning device provided in an embodiment of the present invention To opposite magnetic valve, such as air-conditioning branch road 20 includes the 3rd magnetic valve 25 and the 4th magnetic valve 26.Due on air-conditioning branch road 20 Including two valves magnetic valve in opposite direction, so if control module 40 controls the two valves electricity in opposite direction simultaneously Magnet valve is closed, then nitrogen can be avoided to be circulated along the opposite direction in the valve direction of magnetic valve.
It is exemplary, as shown in table 4, be in detection of air-conditioning device 100 each valve or device under modes of inflation Device state table example.
Table 4
It is exemplary, as shown in table 5, be in detection of air-conditioning device 100 each valve or device in the case where nitrogen mode is protected Device state table example.
Table 5
It is exemplary, as shown in table 6, be in detection of air-conditioning device 100 each valve or device under exhaust mode Device state table example.
Table 6
Further, as shown in figure 5, detection of air-conditioning device 100 is in nitrogen charging pressurize and discharges the air-conditioning duct of air-conditioning 60 Nitrogen after, in the air-conditioning branch road 20 in the air-conditioning duct and detection of air-conditioning device 100 of air-conditioning 60 may also remaining have part nitrogen Gas, vacuumizing branch road 70 and can extract the part nitrogen of remaining in above-mentioned air-conditioning branch road 20 out in the embodiment of the present invention.Also, on State vacuumize branch road 70 air-conditioning branch road 20 in the air-conditioning duct and detection of air-conditioning device 100 of air-conditioning 60 is vacuumized a period of time Afterwards, can cause that the pressure in the air-conditioning duct of air-conditioning branch road 20 and air-conditioning 60, much smaller than standard atmospheric pressure, is so conducive to profit The filling of lubricating oil or refrigerant.
Specifically, as shown in figure 5, the detection of air-conditioning device 100 in Fig. 4 can also include：Vacuumize branch road 70.This is taken out very Empty branch road 70 can include：Vavuum pump 71, the 5th magnetic valve 72, second pressure table 73, the 6th magnetic valve 74 and needle-valve 75.
Wherein, the port 711 of vavuum pump 71 connects one end of needle-valve 75, and the other end of needle-valve 75 connects the 5th magnetic valve 72 Port 721, the connection of the port 722 second pressure table 73 of the 5th magnetic valve 72, and the port 722 of the 5th magnetic valve 72 connects The port 742 of the 6th magnetic valve 74, the port 741 of the 6th magnetic valve 74 connects main road node 50.The valve of the 5th magnetic valve 72 Direction is in opposite direction with the valve of the 6th magnetic valve 74.Wherein, second pressure table 73 can be vacuum meter.
It is emphasized that because the valve direction of the 5th magnetic valve 72 and the valve of the 6th magnetic valve 74 are in opposite direction, Therefore can avoid due to magnetic valve can only one direction shut-off, cause in nitrogen or detection of air-conditioning device 100 other gases along Magnetic valve reverse circulated.
Exemplary, the mode of operation of the detection of air-conditioning device 100 in the embodiment of the present invention is except above-mentioned modes of inflation, guarantor's nitrogen Outside gas pattern and exhaust mode, underpressure pattern can also be included.
Wherein, under underpressure pattern, the nitrogen that control module 40 can be in air-conditioning is discharged via exhaust branch, and first After pressure gauge 22 indicates the pressure value in the air-conditioning duct of the air-conditioning 60 to be less than second pressure value, at control pressure control unit 12 In closed mode, the first magnetic valve 13 of control, the second magnetic valve 31 are closed, the electricity of the 3rd magnetic valve of control the 25, the 4th Magnet valve 26, the 5th magnetic valve 72 and the 6th magnetic valve 74 are in opening, and control the vavuum pump 71 to operate, and extract the air-conditioning Gas in 60 air-conditioning duct, until the pressure value that second pressure table 73 indicates to vacuumize in branch road 70 is less than the 3rd pressure value When, control vavuum pump 71 shuts down, and the 5th magnetic valve 72 of control and the 6th magnetic valve 74 switch to closing shape by opening State.
Wherein, second pressure value is less than first pressure value, and the second pressure value can be equal with standard atmospheric pressure；3rd pressure Force value is less than second pressure value, and the 3rd pressure value is less than standard atmospheric pressure.
As shown in table 7, it is detection of air-conditioning dress before detection of air-conditioning device 100 fills lubricating oil to the air-conditioning duct of air-conditioning 60 Put the device state table example of each valve or device under underpressure pattern in 100.
Table 7
Wherein, as shown in table 7, under above-mentioned underpressure pattern, when pressure-reducing valve 121 is closed, needle-valve 122 is in State is not turned on, the first magnetic valve 13 is closed, the first check valve 14 is in and does not turn on state, at the second magnetic valve 31 In closed mode, the second check valve 32 is in and does not turn on state, the 3rd magnetic valve 25, the 4th magnetic valve 26, the 5th magnetic valve 72 During with the 6th magnetic valve 74 in opening, inflation branch road 10 and exhaust branch 30 as shown in Figure 5 is in closed mode, And branch road 70 and air-conditioning branch road 20 are vacuumized in opening.Now, the vavuum pump 71 vacuumized in branch road 70 can pass through Air-conditioning branch road 20 extracts the nitrogen or other gases in the air-conditioning duct of air-conditioning 60.
It should be noted that control module 40 can also be under above-mentioned modes of inflation, guarantor's nitrogen mode and exhaust mode, control Make the 5th magnetic valve 72 and the 6th magnetic valve 74 is closed.
Further, in order to avoid the abrasion due to each device in air-conditioning 60 causes the failure of air-conditioning 60, the present invention is real Apply the detection of air-conditioning device 100 in example can also be to fill lubricating oil, to reduce above-mentioned each device in the air-conditioning duct of air-conditioning 60 Abrasion situation, extend the service life of these devices.Specifically, as shown in fig. 6, the detection of air-conditioning device 100 in Fig. 4 is gone back Can include：Lubrication branch road 80.Lubrication branch road 80 includes：Lubricating can 81, the 7th magnetic valve 82, the 8th magnetic valve 83, lubrication Fuel filling measurer 84 and needle-valve 85.
Wherein, lubricating can 81 is used to store lubricating oil.The port 811 of lubricating can 81 connects one end of needle-valve 85, pin The other end of valve 85 connects the port 821 of the 7th magnetic valve 82, and the port 822 of the 7th magnetic valve 82 connects the 8th magnetic valve 83 Port 832, the port 831 of the 8th magnetic valve 83 connects main road node 50.The valve direction of the 7th magnetic valve 82 and the 8th electromagnetism The valve of valve 83 is in opposite direction.Wherein, needle-valve 85 can be connected between the 7th magnetic valve 82 and lubricating can 81.
Optionally, lubricating oil tank 81 can also be by pipeline (such as leather hose) be connected with above-mentioned detection of air-conditioning device 100 it is outer Portion's device.
It is emphasized that because the valve direction of the 7th magnetic valve 82 and the valve of the 8th magnetic valve 83 are in opposite direction, It can thus be avoided when a magnetic valve (such as the 7th magnetic valve 82) is only included in lubricating branch road 80, due to the 7th magnetic valve 82 can only one direction shut-off, cause lubricating oil along the reverse circulated of the 7th magnetic valve 82.
Above-mentioned lubrication fuel filling measurer 84 is used to measure the oil mass of the lubricating oil in lubricating can 81.Lubrication fuel filling measurer 84 can It is connected with control module 40 so that control module 40 can in real time detect lubricating can 81 by lubricating fuel filling measurer 84 The oil mass of middle lubricating oil.
Wherein, when lubrication fuel filling measurer 84 can be electronic scale, now, lubrication fuel filling measurer is connected with lubricating can 81 84 can be that lubricating can 81 is placed on lubrication fuel filling measurer 84.
Optionally, lubrication fuel filling measurer 84 can be other devices in addition to electronic scale, now, lubricate fuel filling measurer 84 Can also be connected with the port 811 of lubricating can 81, to measure the oil mass of the lubricating oil of the output of lubricating can 81.
Exemplary, as shown in fig. 6, for the ease of representing, lubricating can 81 and lubrication can be connected using curve in Fig. 6 Fuel filling measurer 84, to represent the annexation between lubricating can 81 and lubrication fuel filling measurer 84.
Exemplary, the mode of operation of the detection of air-conditioning device 100 in the embodiment of the present invention is except above-mentioned modes of inflation, guarantor's nitrogen Outside gas pattern, exhaust mode and underpressure pattern, can also include filling lubricating oil pattern.
Wherein, in the case where lubricating oil pattern is filled, control module 40 can be in second pressure table 73 indicates to vacuumize branch road 70 Pressure value less than after the 3rd pressure value, the 7th magnetic valve 82 of control and the 8th magnetic valve 83 are in opening, with from lubrication Oil tank 81 conveys lubricating oil in the air-conditioning duct to air-conditioning 60, until lubrication fuel filling measurer 84 indicate conveying oil mass be more than or During equal to default oil mass threshold value, the 7th magnetic valve 82 of control and the 8th magnetic valve 83 switch to closed mode by opening.Its In, above-mentioned default oil mass threshold value can pre-set, and the default oil mass threshold value fills lubrication required for air-conditioning normal work The oil mass of oil.
Optionally, can also be filled to the air-conditioning duct of air-conditioning 60 by artificial operation lubricating can 81 in the embodiment of the present invention Lubricating oil.
Optionally, it is above-mentioned to vacuumize what branch road 70 and second pressure table 73 be provided by outside vacuum extractor.
As shown in table 8, it is the device state of each valve or device under underpressure pattern in detection of air-conditioning device 100 Table example.
Table 8
Wherein, as shown in table 8, filled under lubricating oil pattern above-mentioned, when pressure-reducing valve 121 is closed, at needle-valve 122 In the state that do not turn on, the first magnetic valve 13 is closed, and the first check valve 14 is in and does not turn on state, the second magnetic valve 31 It is closed, the second check valve 32 is in and does not turn on state, the 3rd magnetic valve 25, the 4th magnetic valve 26, the 7th magnetic valve 82 and the 8th magnetic valve 83 in opening when, inflation branch road 10 as shown in Figure 6, exhaust branch 30 and vacuumize branch road 70 Closed mode is in, and air-conditioning branch road 20 and lubrication branch road 80 are in opening.Now, lubricating can in lubrication branch road 80 Lubricating oil in 81 can be filled with the air-conditioning duct of air-conditioning 60 by air-conditioning branch road 20.
It should be noted that control module 40 can also in above-mentioned modes of inflation, protect nitrogen mode, exhaust mode and take out true Under empty pattern, the 7th magnetic valve 82 of control and the 8th magnetic valve 83 are closed.
Further, as shown in fig. 7, the detection of air-conditioning device 100 in Fig. 5 can also include：Lubrication branch road 80.Wherein, When lubricating oil pattern is filled, the 5th magnetic valve 72 and the 6th magnetic valve 74 are in closed mode to control module 40, detection of air-conditioning The state of each valve or device (in addition to the 5th magnetic valve 72 and the 6th magnetic valve 74) is referred to table 8 in device 100, here Repeat no more.
Further, can also be air-conditioning after above-mentioned detection of air-conditioning device 100 fills lubricating oil for the air-conditioning duct of air-conditioning 60 60 air-conditioning duct fills refrigerant, and the efficiency of refrigerant is filled to improve, and can extract the air in the air-conditioning duct of air-conditioning 60, makes The pressure value for obtaining the air-conditioning duct of air-conditioning 60 is less than standard atmospheric pressure；But, when vacuumizing, in the air-conditioning duct of air-conditioning 60 Lubricating oil may be extracted the air-conditioning duct of air-conditioning 60 with the gas in the air-conditioning duct of air-conditioning 60.If from the sky of air-conditioning 60 The lubricating oil for adjusting pipeline to enter air-conditioning branch road 20 can be stored in air-conditioning branch road 20, then can cause detection of air-conditioning device 100 The lubricating oil stored in air-conditioning branch road 20 can be filled with the air-conditioning of air-conditioning 60 again when filling refrigerant to the air-conditioning duct of air-conditioning 60 Pipeline, can avoid all lubricating oil in the air-conditioning duct of air-conditioning 60 from being all extracted the air-conditioning duct of air-conditioning 60.
As shown in figure 8, air-conditioning branch road 20 also includes in detection of air-conditioning device 100 in Fig. 7：Fluid reservoir 27.Fluid reservoir 27 Port 271 connect the port 261 of the 4th magnetic valve 26, the port 212 of the connection of the port 272 air-conditioning interface 21 of fluid reservoir 27. Wherein, the direction of fluid reservoir 27 is that the direction of port 272 is arrived in port 271.Fluid reservoir 27 can make the fluid of its side of port 271 (such as Lubricating oil) side of port 272 is reached, and the lubricating oil of its side of port 272 cannot pass through fluid reservoir 27 and reach the side of port 271, that is, store up Flow container 27 can store the lubricating oil for entering fluid reservoir 27 by port 272.
It is exemplary, detection of air-conditioning device 100 in the embodiment of the present invention to the air-conditioning duct of air-conditioning 60 fill lubricating oil it Afterwards, detection of air-conditioning device 100 can also be operated in underpressure pattern.
Wherein, under the underpressure pattern after filling lubricating oil, control module 40 can also be indicated in lubrication fuel filling measurer 84 After the oil mass of conveying is more than or equal to default oil mass threshold value, the 5th magnetic valve 71 of control and the 6th magnetic valve 74 are by closed mode Opening is switched to, and controls vavuum pump 71 to start running, extract the nitrogen or other gas in the air-conditioning duct of air-conditioning 60 Body, until when the second pressure table 73 indicates this to vacuumize the pressure value in branch road 70 less than four pressure values, controlling the 5th Magnetic valve 71 and the 6th magnetic valve 74 switch to closed mode by opening.Wherein, above-mentioned default oil mass threshold value can be Pre-set, the default oil mass threshold value fills the oil mass of lubricating oil required for air-conditioning normal work.Above-mentioned 4th pressure value is small In standard atmospheric pressure, and the 4th pressure value is less than or equal to above-mentioned 3rd pressure value.
As shown in table 9, it is detection of air-conditioning device after detection of air-conditioning device 100 fills lubricating oil to the air-conditioning duct of air-conditioning 60 The device state table example of each valve or device under underpressure pattern in 100.
Table 9
Wherein, as shown in table 9, under the underpressure pattern after filling lubricating oil, when pressure-reducing valve 121 is closed, pin Valve 122 is in and does not turn on state, and the first magnetic valve 13 is closed, and the first check valve 14 is in and does not turn on state, second Magnetic valve 31, the 7th magnetic valve 82 and the 8th magnetic valve 83 are closed, and the second check valve 32 is in and does not turn on state, the It is as shown in Figure 8 when three magnetic valves 25, the 4th magnetic valve 26, the 5th magnetic valve 72 and the 6th magnetic valve 74 are in opening Inflation branch road 10, exhaust branch 30 and lubrication branch road 80 are in closed mode, and air-conditioning branch road 20 and vacuumize at branch road 70 In opening.Now, vacuumizing the vavuum pump 71 in branch road 70 can extract the air-conditioner pipe of air-conditioning 60 by air-conditioning branch road 20 Gas in road.
It should be noted that control module 40 can also in above-mentioned modes of inflation, protect and nitrogen mode, exhaust mode and fill profit Under lubricating oil pattern, the 5th magnetic valve 72 of control and the 6th magnetic valve 74 are closed.
Refrigerant (i.e. refrigerant) transferring heat energy is needed to use when further, due to air-conditioning normal work and produces refrigeration to imitate Really, thus in order to ensure air-conditioning can normal work, can install air-conditioning when to its air-conditioning duct in be filled with refrigerant, Huo Zhe Air-conditioning is when overhauling to being filled with refrigerant in its air-conditioning duct.As shown in figure 9, the detection of air-conditioning device 100 in Fig. 8 can also include： Refrigerant branch road 90.
As shown in Figure 10, be the embodiment of the present invention refrigerant branch road 90 composition schematic diagram.Refrigerant branch road 90 in Figure 10 Can include：Refrigerant tank 91, the 9th magnetic valve 92 and the tenth magnetic valve 93, refrigerant meter 94 and needle-valve 95.Wherein, in Fig. 9 The refrigerant branch road 90 that is referred in Figure 10 of refrigerant branch road 90.
Wherein, refrigerant tank 91 is used to store refrigerant.The port 911 of refrigerant tank 91 connects one end of needle-valve 95, needle-valve 95 The other end connects the port 921 of the 9th magnetic valve 92, and the port 922 of the 9th magnetic valve 92 connects the port of the tenth magnetic valve 93 932, the port 932 of the tenth magnetic valve 93 connects main road node 50.
Optionally, refrigerant tank 91 can also be the outside device being connected with detection of air-conditioning device 100 by pipeline (such as leather hose) Part.
It is emphasized that because the valve direction of the 9th magnetic valve 92 and the valve of the tenth magnetic valve 93 are in opposite direction, Therefore, when a magnetic valve (such as the 9th magnetic valve 92) is only included in refrigerant branch road 90, can avoid due to the 9th magnetic valve 92 can only one direction shut-off, cause refrigerant along the reverse circulated of the 9th magnetic valve 92.
Above-mentioned refrigerant meter 94 can measure the coolant quantity of refrigerant in the refrigerant tank 91.Refrigerant meter 94 can be with control Molding block 40 is connected so that control module 40 can in real time detect the cold of refrigerant in refrigerant tank 91 by refrigerant meter 94 Matchmaker measures.
Wherein, refrigerant meter 94 can be electronic scale, and now, refrigerant meter 94 is connected with refrigerant tank 91 can be Refrigerant tank 91 is placed on refrigerant meter 94.
Optionally, refrigerant meter 94 can be other devices in addition to electronic scale, and now, refrigerant meter 94 may be used also It is connected with the port 911 with refrigerant tank 91, to measure the coolant quantity that refrigerant tank 91 exports refrigerant.
Exemplary, as shown in Figure 10, for the ease of representing, refrigerant tank 91 and refrigerant can be connected using curve in Figure 10 Meter 94, to represent the annexation between refrigerant tank 91 and refrigerant meter 94.
Exemplary, the mode of operation of the detection of air-conditioning device 100 in the embodiment of the present invention is except above-mentioned modes of inflation, guarantor's nitrogen Gas pattern, exhaust mode, underpressure pattern and fill outside lubricating oil pattern, can also include filling refrigerant pattern.
Wherein, in the case where refrigerant pattern is filled, control module 40 can be in the pressure value in the air-conditioning duct of air-conditioning 60 less than the After five pressure values, the 9th magnetic valve 92 of control and the tenth magnetic valve 93 are in opening, with from refrigerant tank 91 to air-conditioning 60 Air-conditioning duct conveys refrigerant, until when refrigerant meter 94 indicates the coolant quantity of conveying to be more than or equal to default refrigerant threshold value, The 9th magnetic valve 92 and the tenth magnetic valve 93 is controlled to switch to closed mode by opening.Wherein, the 5th pressure value is less than mark Quasi- atmospheric pressure, and the 5th pressure value can be less than and/or equal to the 4th pressure value.Above-mentioned default refrigerant threshold value can be set in advance Put, the coolant quantity that refrigerant is filled required for different air-conditionings (air-conditioning of different model) is different.
As shown in table 10, it is the device shape of each valve or device in the case where refrigerant pattern is filled in detection of air-conditioning device 100 State table example.
Table 10
Wherein, as shown in table 10, in the case where refrigerant pattern is filled, when pressure-reducing valve 121 is closed, needle-valve 122 is in not Conducting state, the first magnetic valve 13 is closed, the first check valve 14 in the state that do not turn on, the second magnetic valve 31, the Five magnetic valves 72, the 6th magnetic valve 74, the 7th magnetic valve 82 and the 8th magnetic valve 83 are closed, the Two check valves 32 are in and do not turn on state, the 3rd magnetic valve 25, the 4th magnetic valve 26, the 9th magnetic valve 92 and the tenth magnetic valve 93 During in opening, inflation branch road 10 as shown in Figure 10, exhaust branch 30, branch road 70 is vacuumized and lubrication branch road 80 is located In closed mode, and air-conditioning branch road 20 and refrigerant branch road 90 are in opening.Now, the refrigerant tank 91 in refrigerant branch road 90 can With by air-conditioning branch road 20 refrigerant is filled with to the air-conditioning duct of air-conditioning 60.
It should be noted that control module 40 can also in above-mentioned modes of inflation, protect nitrogen mode, exhaust mode, take out true Empty pattern and fill under lubricating oil pattern, the 9th magnetic valve 92 of control and the tenth magnetic valve 93 are closed.
Further, in order to rise to the efficiency that air-conditioning duct fills refrigerant, the detection of air-conditioning device in the embodiment of the present invention Refrigerant branch road in can also include for the heating module that is heated to refrigerant tank.As shown in figure 11, the air-conditioning in Figure 10 Refrigerant branch road 90 in detection means 100 can also include：For the heating module 96 heated to refrigerant tank 91.Wherein, The heating bag that the heating module 96 can be made up of heater strip, for being heated to refrigerant tank 91 so that the refrigerant tank 91 In refrigerant be easier output.
Exemplary, as shown in figure 11, for the ease of representing, refrigerant tank 91 and heating can be connected using curve in Figure 10 Module 96, to represent the annexation of refrigerant tank 91 and heating module 96.
Detection of air-conditioning device provided in an embodiment of the present invention, can be not only used for detecting the sealing of air-conditioning duct, may be used also It is that air-conditioning duct fills lubricating oil and refrigerant to extract the gas in air-conditioning duct.
Further, during detection of air-conditioning device 100 is installed and detected to air-conditioning, if detection of air-conditioning device 100 break down, and are shown the reason for detection of air-conditioning device 100 can also break down to it.Exemplary, such as Figure 12 institutes Show, air-conditioning detection means 100 can also include alarm module 110 in Fig. 9.Alarm module 110 can include buzzer and alarm Display interface.Buzzer in alarm module 110 can send sound, and in the failure of its alarm indication showing interface failure Reason.
Specifically, the detection of air-conditioning device 100 be in above-mentioned modes of inflation, protect nitrogen mode, exhaust mode, vacuumize When pattern, again underpressure pattern, the either mode for filling lubricating oil pattern and filling in refrigerant pattern, if above-mentioned control module 40 is examined Work detection of air-conditioning device 100 in this mode is measured to break down, then can be at the alarm indication interface of alarm module 110 The upper failure cause for showing the failure, to notify that testing staff safeguards the air-conditioning duct of the detection of air-conditioning device 100 or air-conditioning 60.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any The invention discloses technical scope in change or replacement, should all be included within the scope of the present invention.Therefore, this hair The protection domain of bright embodiment should be defined by scope of the claims.

Claims (9)

1. a kind of detection of air-conditioning device, it is characterised in that including：Inflation branch road, at least one air-conditioning branch road, exhaust branch and control Molding block；
The inflation branch road, at least one air-conditioning branch road and the exhaust branch are connected by main road node, the inflation Branch road, at least one air-conditioning branch road and the exhaust branch are connected with the control module；At least one air-conditioning Branch road connects air-conditioning, and the inflation branch road includes nitrogen cylinder, and the exhaust branch includes capillary；
The control module, for after at least one air-conditioning branch road connects the air-conditioning, controlling at the inflation branch road In conducting state, the nitrogen cylinder output nitrogen is controlled, control the exhaust branch to be closed, until in the air-conditioning Pressure value when being more than first pressure value, control the inflation branch road to be closed, control the nitrogen cylinder to stop output Nitrogen；After the first Preset Time, control the exhaust branch in the conduction state.
2. detection of air-conditioning device according to claim 1, it is characterised in that the inflation branch road includes：Contact successively Nitrogen cylinder, pressure control unit, the first magnetic valve and the first check valve, the other end connection main road section of first check valve The valve direction of point, the valve direction of first magnetic valve and first check valve is first check valve to the master The direction of circuit node；
Each air-conditioning branch road at least one air-conditioning branch road includes：Air-conditioning interface and first pressure table, the air-conditioning connect One end connection the first pressure table and the main road node of mouth, the other end connection air-conditioning of the air-conditioning interface；
The exhaust branch includes：The second magnetic valve, the second check valve and the capillary being sequentially connected in series, second magnetic valve The valve direction of the other end connection main road node, second magnetic valve and the second check valve is arrived for second magnetic valve The opposite direction of the main road node；
The control module, for after the air-conditioning interface connects the air-conditioning, institute being controlled by the pressure control unit Nitrogen cylinder output nitrogen is stated, controls first magnetic valve to be in opening, controlled second magnetic valve to be in and close shape State, until when the first pressure table indicates the pressure value in the air-conditioning to be more than the first pressure value, by the pressure Control unit controls the nitrogen cylinder to stop output nitrogen, controls first magnetic valve to switch to closing shape by opening State；After the first Preset Time, second magnetic valve is controlled to switch to opening by closed mode.
3. detection of air-conditioning device according to claim 2, it is characterised in that each at least one air-conditioning branch road Air-conditioning branch road also includes：3rd magnetic valve and the 4th magnetic valve, one end of the 3rd magnetic valve connect the main road node, institute The other end for stating the 3rd magnetic valve connects one end of the 4th magnetic valve, the other end connection of the 4th magnetic valve described the One end of one pressure gauge and the air-conditioning interface；The valve direction of the 3rd magnetic valve and the valve side of the 4th magnetic valve To opposite；
The control module, is additionally operable to after the air-conditioning interface connects the air-conditioning, is controlled by the pressure control unit The nitrogen cylinder exports nitrogen, controls first magnetic valve, the 3rd magnetic valve and the 4th magnetic valve to be in and opens State, controls second magnetic valve to be closed, until the first pressure table indicates the pressure value in the air-conditioning During more than first pressure value, the nitrogen cylinder is controlled to stop output nitrogen, control described first by the pressure control unit Magnetic valve, the 3rd magnetic valve and the 4th magnetic valve switch to closed mode by opening；In the first Preset Time Afterwards, second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve is controlled to switch to opening by closed mode.
4. the detection of air-conditioning device according to Claims 2 or 3, it is characterised in that also include：Vacuumize branch road；
The branch road that vacuumizes includes：Vavuum pump, the 5th magnetic valve, second pressure table and the 6th magnetic valve being sequentially connected in series, institute The other end for stating the 6th magnetic valve connects the main road node, the valve of the 5th magnetic valve and the valve of the 6th magnetic valve Door is in opposite direction；
The control module, the nitrogen being additionally operable in the air-conditioning is discharged via the exhaust branch, the first pressure table Indicate the pressure value in the air-conditioning less than after second pressure value, the second magnetic valve of control switches to closing shape by opening State, controls the 5th magnetic valve and the 6th magnetic valve to be in opening, and controls the vavuum pump to operate, and extracts institute The gas in air-conditioning is stated, until the pressure value vacuumized described in second pressure table instruction in branch road is less than the 3rd pressure value When, control the vavuum pump to shut down, control the 5th magnetic valve and the 6th magnetic valve to be switched to by opening Closed mode.
5. detection of air-conditioning device according to claim 4, it is characterised in that also include：Lubrication branch road；
The lubrication branch road includes：Lubricating can, the 7th magnetic valve and the 8th magnetic valve being sequentially connected in series, on the lubricating can It is connected with lubrication fuel filling measurer, the other end of the 8th magnetic valve connects the main road node, the valve of the 7th magnetic valve The valve of door and the 8th magnetic valve is in opposite direction；
The control module, the pressure value being additionally operable in vacuumizing branch road described in being indicated in the second pressure table is less than the 3rd pressure After force value, the 7th magnetic valve and the 8th magnetic valve is controlled to be in opening, with from the lubricating can to described Air-conditioning conveys lubricating oil, until when the lubrication fuel filling measurer indicates the oil mass of conveying to be more than or equal to default oil mass threshold value, The 7th magnetic valve and the 8th magnetic valve is controlled to switch to closed mode by opening.
6. detection of air-conditioning device according to claim 5, it is characterised in that each at least one air-conditioning branch road Air-conditioning branch road also includes：Fluid reservoir；The fluid reservoir is connected between the 4th magnetic valve and the air-conditioning interface.
7. the detection of air-conditioning device according to claim 5 or 6, it is characterised in that the control module, is additionally operable to described After lubrication fuel filling measurer indicates the oil mass of conveying to be more than or equal to default oil mass threshold value, the 5th magnetic valve and described is controlled 6th magnetic valve switches to opening by closed mode, and controls the vavuum pump to start running, in the extraction air-conditioning Gas, until when the pressure value vacuumized described in second pressure table instruction in branch road is less than four pressure values, control is described 5th magnetic valve and the 6th magnetic valve switch to closed mode by opening.
8. the detection of air-conditioning device according to any one of claim 1-7, it is characterised in that also include：Refrigerant branch road；
The refrigerant branch road includes：Refrigerant tank, the 9th magnetic valve and the tenth magnetic valve being sequentially connected in series, connect on the refrigerant tank The other end for having refrigerant meter, the tenth magnetic valve connects the main road node, the valve of the 9th magnetic valve and institute The valve for stating the tenth magnetic valve is in opposite direction；
The control module, is additionally operable to the pressure value in the air-conditioning less than after the 5th pressure value, controls the 9th electromagnetism Valve and the tenth magnetic valve are in opening, to convey refrigerant from the refrigerant tank to the air-conditioning, until the refrigerant When meter indicates the coolant quantity of conveying to be more than or equal to default refrigerant threshold value, the 9th magnetic valve and the described tenth are controlled Magnetic valve switches to closed mode by opening.
9. detection of air-conditioning device according to claim 8, it is characterised in that the refrigerant branch road also includes：For to cold The heating module that matchmaker's tank is heated.
CN201611249752.7A 2016-12-29 2016-12-29 A kind of detection of air-conditioning device Active CN106840549B (en)

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