CN108981879A - A kind of portable coolant injection weighing tool and its control method - Google Patents
A kind of portable coolant injection weighing tool and its control method Download PDFInfo
- Publication number
- CN108981879A CN108981879A CN201810989319.XA CN201810989319A CN108981879A CN 108981879 A CN108981879 A CN 108981879A CN 201810989319 A CN201810989319 A CN 201810989319A CN 108981879 A CN108981879 A CN 108981879A
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- China
- Prior art keywords
- microcontroller
- control terminal
- hand
- weighing
- refrigerant
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of portable coolant injection weighing tool and its control methods, supporting body is arranged in the upper housing, weighing sensor is fixed on supporting body lower part, the lower part of the housing opens up placing groove, hand-held control terminal is in placing groove and is fixed by elastic band, matrix press-key input circuit is connect with microcontroller, the weighing-up wave that weighing sensor obtains transfers data to microcontroller after analyzing by AD Acquisition Circuit, hand-held control terminal is radioed to by communication module after microcontroller operation, is shown in weighing numerical value in hand-held control terminal；Hand-held control terminal sends control signal to microcontroller, and microcontroller controls the opening and closing of solenoid valve by driving circuit for electromagnetic valve, and one end of solenoid valve is connected to by hose with refrigerant container, and the other end of solenoid valve connects refrigeration equipment by hose.Structure of the invention is compact, compact, is able to achieve the automatic control to refrigerant agent injection rate and yield, improves the refrigerant maintenance efficiency of refrigeration equipment.
Description
Technical field
The present invention relates to a kind of portable coolant injection weighing tool and its control methods.
Background technique
Refrigerant, also known as refrigerant are that the easy heat absorption of one kind becomes gas, and is easy the substance that heat release becomes liquid.It is led
Air-conditioning, refrigerator etc. is used to need to carry out in the equipment of heat exchange.Needed for circular flow realization of these equipment by refrigerant
Refrigeration demand；It in order to guarantee the normal of equipment refrigeration situation, therefore is therein crucial one for the suitable refrigerant of injection in equipment
Step, coolant injection tool traditional at present use gauge measurement, judge whether refrigerant agent meets refrigeration and set by pressure
Standby demand stops injection after reaching pressure value, is gas-liquid mixture phase when due to refrigerant injection, pressure value is only capable of reflecting
The volume of gas and the amount that can not accurately obtain liquid, therefore this mode can not accurately measure the usage amount of refrigerant, in addition
Also there is the use that weighing tool is carried out to refrigerant in market, but their volumes are larger not readily portable, complicated for operation using very
Inconvenience, and existing refrigerant weighing tool can not achieve the automatic control to refrigerant agent injection rate.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of portable coolant injection weighing tool and its controls
Method processed, compact-sized, compact are able to achieve the automatic control to refrigerant agent injection rate and yield, improve refrigeration equipment
Refrigerant maintain efficiency.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of portable coolant injects weighing tool, packet
Meausring apparatus and hand-held control terminal are included,
The meausring apparatus includes shell, microcontroller, communication module, AD Acquisition Circuit, weighing sensor, solenoid valve drive
Dynamic circuit, matrix press-key input circuit, solenoid valve and supporting body, supporting body are arranged in the upper housing, and weighing sensor is fixed on
Supporting body lower part, the lower part of the housing open up placing groove, and hand-held control terminal is in placing groove and is fixed by elastic band, matrix
Button inputting circuits are connect with microcontroller, the weighing-up wave that weighing sensor obtains by after AD Acquisition Circuit analysis by data
It sends microcontroller to, hand-held control terminal is radioed to by communication module after microcontroller operation, show weighing numerical value
In in hand-held control terminal；Hand-held control terminal sends control signal to microcontroller, and microcontroller passes through driving circuit for electromagnetic valve pair
The opening and closing of solenoid valve is controlled, and one end of solenoid valve is connected to by hose with refrigerant container, and the other end of solenoid valve passes through soft
Pipe connects refrigeration equipment.
Further, the hand-held control terminal is handle control terminal or smart phone.
Further, the solenoid valve is Direct Action Type self-holding electromagnetic valve.
Further, the weighing sensor is cantilever type weighing sensor.
A kind of control method of portable coolant injection weighing tool, specific steps are as follows:
(1) refrigerant container, which is placed, is on the carrier connected solenoid valve one end of meausring apparatus by hose and refrigerant container
Logical, the other end of solenoid valve connects refrigeration equipment by hose；
(2) communication module for opening meausring apparatus makes meausring apparatus and hand-held control terminal complete wireless communication pairing；
(3) weighing sensor transfers data to microcontroller after in real time analyzing the weight value measured by AD Acquisition Circuit
Device radios to hand-held control terminal by communication module after microcontroller operation, and weighing numerical value is made to be shown in hand-held control terminal
On；
(4) user inputs coolant charging threshold value and refrigerant recovering threshold value by hand-held control terminal, or by required filling
Or the refrigeration equipment model of recycling is sent to cloud platform by wireless network, cloud platform automatically determines the type according to refrigeration equipment model
Number coolant charging threshold value and refrigerant recovering threshold value；
(5) user presses the determination key in hand-held control terminal, and coolant charging threshold value and refrigerant recovering threshold value can be sent to
Meausring apparatus, meausring apparatus pass to microcontroller after receiving by communication module, and microcontroller stores the data；
(6) user issues different working condition signal by holding control terminal, and microcontroller, which determines to be in after receiving, to be added
Note state or recycling state control the unlatching of Direct Action Type self-holding electromagnetic valve simultaneously；
If being in filling state, microcontroller first obtains the weight value that weighing sensor when not filling measures, as initial
Value, then refrigerant container persistently fills refrigerant to refrigeration equipment, and microcontroller measures initial value and weighing sensor in real time
Difference (i.e. real-time refrigerant adding amount) between weight value is compared with coolant charging threshold value, when difference is greater than coolant charging threshold
When value, microcontroller controls Direct Action Type self-holding electromagnetic valve and closes, and stops filling refrigerant to refrigeration equipment；On the contrary then solenoid valve is held
It is continuous to open；
If being in recycling state, refrigerant container persistently recycles refrigerant to refrigeration equipment, and microcontroller passes through weighing sensor
The weight value and refrigerant recovering threshold calculations measured in real time goes out recycling surplus in real time, and specific calculating process is refrigerant recovering threshold value
And the difference of the weight value measured in real time is to recycle surplus in real time, when recycling surplus is less than or equal to zero in real time, microcontroller
It controls Direct Action Type self-holding electromagnetic valve to close, stop to refrigeration equipment refrigerant recovering；Conversely, then solenoid valve is persistently opened.
Compared with prior art, the present invention uses microcontroller, communication module, AD Acquisition Circuit, weighing sensor, electromagnetism
Valve-driving circuit, matrix press-key input circuit, solenoid valve and supporting body combine mode, and user can directly be set by handheld terminal
It sets refrigerant weighing threshold value or input refrigeration equipment model holds control terminal and obtains matched coolant charging automatically by cloud platform
Threshold value and refrigerant recovering threshold value, then through refrigerant container when filling to refrigeration equipment, weighing sensor will be examined in real time
The weight value of survey feeds back to microcontroller, and real-time measurement values are compared by microcontroller with coolant charging threshold value, according to comparison
Condition automatically controls the coolant charging amount to refrigeration equipment, such as through refrigerant container when being recycled to refrigeration equipment, weighing
The weight value of real-time detection is fed back to microcontroller by sensor, and microcontroller is according to real-time weight value and refrigerant recovering threshold value meter
When calculating the remaining value of determining refrigeration equipment less than or equal to zero, stop removal process.The present invention due to being arranged placement in the lower part of the housing
Slot consequently facilitating hand-held control terminal is fixed on shell, therefore has compact-sized, compact, consequently facilitating taking with oneself
Band is able to achieve the automatic control to refrigerant agent injection rate and yield additionally by hand-held control terminal, improves refrigeration equipment
Refrigerant maintains efficiency.
Detailed description of the invention
Fig. 1 is work flow diagram of the invention；
Fig. 2 is appearance diagram of the invention.
In figure: 1, placing groove, 2, hand-held control terminal, 3, elastic band, 4, shell.
Specific embodiment
The present invention will be further described below.
As shown, a kind of portable coolant injects weighing tool, including meausring apparatus and hand-held control terminal 2,
The meausring apparatus includes shell 4, microcontroller, communication module, AD Acquisition Circuit, weighing sensor, solenoid valve
Driving circuit, matrix press-key input circuit, solenoid valve and supporting body, supporting body are arranged in the upper housing, and weighing sensor is fixed
In supporting body lower part, 4 lower part of shell opens up placing groove 1, and hand-held control terminal 2 is in placing groove 1 and solid by elastic band 3
Fixed, matrix press-key input circuit is connect with microcontroller, and the weighing-up wave that weighing sensor obtains is analyzed by AD Acquisition Circuit
After transfer data to microcontroller, hand-held control terminal is radioed to by communication module after microcontroller operation, makes to weigh
Numerical value is shown in hand-held control terminal 2；Hand-held control terminal 2 sends control signal to microcontroller, and microcontroller passes through solenoid valve
Driving circuit controls the opening and closing of solenoid valve, and one end of solenoid valve is connected to by hose with refrigerant container, solenoid valve it is another
One end connects refrigeration equipment by hose.
Further, the hand-held control terminal 2 is handle control terminal or smart phone.
Further, the solenoid valve is Direct Action Type self-holding electromagnetic valve.
Further, the weighing sensor is cantilever type weighing sensor.
A kind of control method of portable coolant injection weighing tool, specific steps are as follows:
(1) refrigerant container, which is placed, is on the carrier connected solenoid valve one end of meausring apparatus by hose and refrigerant container
Logical, the other end of solenoid valve connects refrigeration equipment by hose；
(2) communication module for opening meausring apparatus makes meausring apparatus and hand-held control terminal complete wireless communication pairing；
(3) weighing sensor transfers data to microcontroller after in real time analyzing the weight value measured by AD Acquisition Circuit
Device radios to hand-held control terminal 2 by communication module after microcontroller operation, and weighing numerical value is made to be shown in hand-held control terminal
On 2；
(4) user inputs coolant charging threshold value and refrigerant recovering threshold value by hand-held control terminal 2, or by required filling
Or the refrigeration equipment model of recycling is sent to cloud platform by wireless network, cloud platform automatically determines the type according to refrigeration equipment model
Number coolant charging threshold value and refrigerant recovering threshold value；
(5) user presses the determination key in hand-held control terminal 2, and coolant charging threshold value and refrigerant recovering threshold value can be sent to
Meausring apparatus, meausring apparatus pass to microcontroller after receiving by communication module, and microcontroller stores the data；
(6) user issues different working condition signal by holding control terminal 2, and microcontroller, which determines to be in after receiving, to be added
Note state or recycling state control the unlatching of Direct Action Type self-holding electromagnetic valve simultaneously；
If being in filling state, microcontroller first obtains the weight value that weighing sensor when not filling measures, as initial
Value, then refrigerant container persistently fills refrigerant to refrigeration equipment, and microcontroller measures initial value and weighing sensor in real time
Difference (i.e. real-time refrigerant adding amount) between weight value is compared with coolant charging threshold value, when difference is greater than coolant charging threshold
When value, microcontroller controls Direct Action Type self-holding electromagnetic valve and closes, and stops filling refrigerant to refrigeration equipment；On the contrary then solenoid valve is held
It is continuous to open；
If being in recycling state, refrigerant container persistently recycles refrigerant to refrigeration equipment, and microcontroller passes through weighing sensor
The weight value and refrigerant recovering threshold calculations measured in real time goes out recycling surplus in real time, and specific calculating process is refrigerant recovering threshold value
And the difference of the weight value measured in real time is to recycle surplus in real time, (the survey in real time when recycling surplus is less than or equal to zero in real time
The weight value obtained meets or exceeds refrigerant recovering threshold value), microcontroller controls Direct Action Type self-holding electromagnetic valve and closes, and stops to system
Cool equipment refrigerant recovering；Conversely, then solenoid valve is persistently opened.
Claims (5)
1. a kind of portable coolant injects weighing tool, which is characterized in that including meausring apparatus and hand-held control terminal,
The meausring apparatus includes shell, microcontroller, communication module, AD Acquisition Circuit, weighing sensor, solenoid-driven electricity
Road, matrix press-key input circuit, solenoid valve and supporting body, supporting body are arranged in the upper housing, and weighing sensor is fixed on carrying
Body lower part, the lower part of the housing open up placing groove, and hand-held control terminal is in placing groove and is fixed by elastic band, matrix press-key
Input circuit is connect with microcontroller, the weighing-up wave that weighing sensor obtains by after AD Acquisition Circuit analysis by data transmission
To microcontroller, hand-held control terminal is radioed to by communication module after microcontroller operation, weighing numerical value is made to be shown in hand
It holds in control terminal；Hand-held control terminal sends control signal to microcontroller, and microcontroller is by driving circuit for electromagnetic valve to electromagnetism
The opening and closing of valve is controlled, and one end of solenoid valve is connected to by hose with refrigerant container, and the other end of solenoid valve is connected by hose
Connect refrigeration equipment.
2. a kind of portable coolant according to claim 1 injects weighing tool, which is characterized in that the hand-held control terminal
For handle control terminal or smart phone.
3. a kind of portable coolant according to claim 1 injects weighing tool, which is characterized in that the solenoid valve is straight
Dynamic formula self-holding electromagnetic valve.
4. a kind of portable coolant according to claim 1 injects weighing tool, which is characterized in that the weighing sensor
For cantilever type weighing sensor.
5. a kind of control method of the injection of portable coolant according to claim 1 weighing tool, which is characterized in that specific step
Suddenly are as follows:
(1) refrigerant container is placed on the carrier is connected to solenoid valve one end of meausring apparatus by hose with refrigerant container, electricity
The other end of magnet valve connects refrigeration equipment by hose；
(2) communication module for opening meausring apparatus makes meausring apparatus and hand-held control terminal complete wireless communication pairing；
(3) weighing sensor transfers data to microcontroller after in real time analyzing the weight value measured by AD Acquisition Circuit,
Hand-held control terminal is radioed to by communication module after microcontroller operation, is shown in weighing numerical value in hand-held control terminal；
(4) user inputs coolant charging threshold value and refrigerant recovering threshold value by hand-held control terminal, or by required filling or returns
The refrigeration equipment model of receipts is sent to cloud platform by wireless network, and cloud platform automatically determines the model according to refrigeration equipment model
Coolant charging threshold value and refrigerant recovering threshold value；
(5) user presses the determination key in hand-held control terminal, and coolant charging threshold value and refrigerant recovering threshold value can be sent to weighing
Device, meausring apparatus pass to microcontroller after receiving by communication module, and microcontroller stores the data；
(6) user issues different working condition signal by hand-held control terminal, and microcontroller is determined after receiving in filling shape
State or recycling state control the unlatching of Direct Action Type self-holding electromagnetic valve simultaneously；
If being in filling state, microcontroller first obtains the weight value that weighing sensor when not filling measures, as initial value, so
Refrigerant container persistently fills refrigerant, the weight value that microcontroller measures initial value and weighing sensor in real time to refrigeration equipment afterwards
Between difference be compared with coolant charging threshold value, when difference be greater than coolant charging threshold value when, microcontroller control Direct Action Type
Self-holding electromagnetic valve is closed, and stops filling refrigerant to refrigeration equipment；On the contrary then solenoid valve is persistently opened；
If being in recycling state, refrigerant container persistently recycles refrigerant to refrigeration equipment, and microcontroller is real-time by weighing sensor
The weight value and refrigerant recovering threshold calculations measured goes out recycling surplus in real time, and specific calculating process is refrigerant recovering threshold value and reality
When the difference of weight value that measures be recycling surplus in real time, when recycling surplus is less than or equal to zero in real time, microcontroller control
Direct Action Type self-holding electromagnetic valve is closed, and is stopped to refrigeration equipment refrigerant recovering；Conversely, then solenoid valve is persistently opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989319.XA CN108981879A (en) | 2018-08-28 | 2018-08-28 | A kind of portable coolant injection weighing tool and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989319.XA CN108981879A (en) | 2018-08-28 | 2018-08-28 | A kind of portable coolant injection weighing tool and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN108981879A true CN108981879A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810989319.XA Pending CN108981879A (en) | 2018-08-28 | 2018-08-28 | A kind of portable coolant injection weighing tool and its control method |
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| Country | Link |
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| CN (1) | CN108981879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378048A (en) * | 2020-10-21 | 2021-02-19 | 浙江飞越机电有限公司 | Intelligent maintenance management system and method for refrigeration equipment |
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|---|---|---|---|---|
| US4470265A (en) * | 1982-05-10 | 1984-09-11 | Gerlach Industries | Refrigerant charging system |
| US5046322A (en) * | 1989-05-08 | 1991-09-10 | Kent-Moore Corporation | Electronic refrigerant transfer scale |
| CN103090937A (en) * | 2012-03-23 | 2013-05-08 | 台州朗讯机械有限公司 | Electronic scale capable of quantitatively adding liquid and method for quantitatively adding liquid |
| CN204612789U (en) * | 2015-01-20 | 2015-09-02 | 金华市威科工贸有限公司 | A kind of wireless large discharge coolant charging scale able to programme |
| CN105277261A (en) * | 2015-11-19 | 2016-01-27 | 南京信息工程大学 | High-precision automatic refrigerant weighing system and control method thereof |
| CN205120218U (en) * | 2015-11-19 | 2016-03-30 | 南京信息工程大学 | Automatic refrigerant weighing system of high accuracy |
| CN205351883U (en) * | 2015-12-29 | 2016-06-29 | 电计科技研发（上海）有限公司 | Automobile -used refrigerant filling recovery system |
| CN106931692A (en) * | 2015-12-29 | 2017-07-07 | 电计科技研发（上海）有限公司 | A kind of automobile-used coolant charging recovery system |
-
2018
- 2018-08-28 CN CN201810989319.XA patent/CN108981879A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470265A (en) * | 1982-05-10 | 1984-09-11 | Gerlach Industries | Refrigerant charging system |
| US5046322A (en) * | 1989-05-08 | 1991-09-10 | Kent-Moore Corporation | Electronic refrigerant transfer scale |
| CN103090937A (en) * | 2012-03-23 | 2013-05-08 | 台州朗讯机械有限公司 | Electronic scale capable of quantitatively adding liquid and method for quantitatively adding liquid |
| CN204612789U (en) * | 2015-01-20 | 2015-09-02 | 金华市威科工贸有限公司 | A kind of wireless large discharge coolant charging scale able to programme |
| CN105277261A (en) * | 2015-11-19 | 2016-01-27 | 南京信息工程大学 | High-precision automatic refrigerant weighing system and control method thereof |
| CN205120218U (en) * | 2015-11-19 | 2016-03-30 | 南京信息工程大学 | Automatic refrigerant weighing system of high accuracy |
| CN205351883U (en) * | 2015-12-29 | 2016-06-29 | 电计科技研发（上海）有限公司 | Automobile -used refrigerant filling recovery system |
| CN106931692A (en) * | 2015-12-29 | 2017-07-07 | 电计科技研发（上海）有限公司 | A kind of automobile-used coolant charging recovery system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378048A (en) * | 2020-10-21 | 2021-02-19 | 浙江飞越机电有限公司 | Intelligent maintenance management system and method for refrigeration equipment |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181211 |