CN206831892U - A kind of secondary refrigerant leakage supervising device of refrigeration system - Google Patents
A kind of secondary refrigerant leakage supervising device of refrigeration system Download PDFInfo
- Publication number
- CN206831892U CN206831892U CN201720607920.9U CN201720607920U CN206831892U CN 206831892 U CN206831892 U CN 206831892U CN 201720607920 U CN201720607920 U CN 201720607920U CN 206831892 U CN206831892 U CN 206831892U
- Authority
- CN
- China
- Prior art keywords
- signal
- central processing
- processing unit
- module
- refrigeration system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a kind of secondary refrigerant leakage supervising device of refrigeration system, including：Gas sampling sensor, in the installing space in the refrigeration system, the refrigerant concentration in installing space for gathering the refrigeration system in real time；Signal operation amplifying unit, it is connected with gas sampling sensor, the analog signal of the refrigerant concentration for being sent to the gas sampling sensor is amplified processing, and is sent to central processing unit after being converted to data signal；Central processing unit, be connected with signal operation amplifying unit, for by the digital data transmission of the refrigerant concentration to monitoring server；Monitoring server, it is connected with central processing unit.The utility model can detect the secondary refrigerant leakage situation of refrigeration system in real time, and prompt user in time, so as to improve the detection efficiency to secondary refrigerant leakage situation, harm caused by efficiently reducing secondary refrigerant leakage, security performance is high, can ensure that user's is safe to use, be advantageous to extensive popularization and application.
Description
Technical field
Monitoring technology field is the utility model is related to, more particularly to a kind of secondary refrigerant leakage supervising device of refrigeration system.
Background technology
At present, due to freon refrigerant easily causes greenhouse effects, China's refrigeration industry is in refrigeration system
Refrigerant eliminates the new refrigerant such as replacement stage, natural refrigerant ammonia, carbon dioxide, propane, due to its outstanding performance and environmental protection
Characteristic is pursued.
The safety in utilization of refrigerant is never effectively guaranteed, and the leakage of refrigerant is not only to the performance of refrigeration system
Have an impact, and the service life of the compressor and miscellaneous part in refrigeration system can be seriously endangered, or even can seriously jeopardize
The health and life security of the users such as laboratory worker.
But there is presently no a kind of device, it can detect the secondary refrigerant leakage situation of refrigeration system in real time, and carry in time
Show user, so as to improve the detection efficiency to secondary refrigerant leakage situation, efficiently reduce harm caused by secondary refrigerant leakage, security performance
Height, it can ensure that user's is safe to use.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of secondary refrigerant leakage supervising device of refrigeration system, and it can be with
The secondary refrigerant leakage situation of detection refrigeration system in real time, and user is prompted in time, so as to improve the detection effect to secondary refrigerant leakage situation
Rate, harm caused by secondary refrigerant leakage is efficiently reduced, security performance is high, can ensure that user's is safe to use, is advantageous to extensively
Popularization and application, be of great practical significance.
Therefore, the utility model provides a kind of secondary refrigerant leakage supervising device of refrigeration system, including：
Gas sampling sensor, in the installing space in the refrigeration system, for gathering the refrigeration system in real time
Refrigerant concentration in the installing space of system, the analog signal of the refrigerant concentration is then sent to signal operation amplifying unit；
Signal operation amplifying unit, it is connected with gas sampling sensor, for being sent to the gas sampling sensor
The analog signal of the refrigerant concentration be amplified processing, and be converted to the data signal of the refrigerant concentration, then send
To central processing unit；
Central processing unit, it is connected with signal operation amplifying unit, is sent for receiving the signal operation amplifying unit
The refrigerant concentration data signal, and the data signal of the refrigerant concentration is passed through into wire transmission mode or wireless passed
Defeated mode is transferred to monitoring server；
Monitoring server, it is connected with central processing unit, for passing through wire transmission mode or wireless transmission method pair
The data signal for the refrigerant concentration that the central processing unit transmits should be received and real-time display is to user.
Wherein, the signal operation amplifying unit includes signal amplification module and analog-to-digital conversion module, wherein：
The signal amplification module, is connected with gas sampling sensor, for sending out the gas sampling sensor
The analog signal for the refrigerant concentration come is amplified processing；
The analog-to-digital conversion module, it is connected respectively with the signal amplification module, central processing unit, for institute will to be passed through
The analog signal for stating the refrigerant concentration that signal amplification module is amplified processing is converted to the numeral letter of the refrigerant concentration
Number, it is then sent to central processing unit.
Wherein, 3G module, 4G modules, WIFI module or GPRS are passed through between the central processing unit and monitoring server
Module is connected.
Wherein, the central processing unit is additionally operable to receiving the refrigerant concentration of the signal operation amplifying unit transmission
Data signal after, by the refrigerant concentration value corresponding to the data signal of the refrigerant concentration and default refrigerant concentration alarming value ratio
Compared with when the refrigerant concentration value corresponding to the data signal of the refrigerant concentration is more than or equal to the default refrigerant concentration alarming value
When, issue the user with alarm.
Wherein, the central processing unit is also connected with presetting multiple LEDs and loudspeaker respectively.
Wherein, the monitoring server includes signal receiving module and touch-screen display module, wherein：
Signal transmission module, it is connected with the central processing unit, for by wire transmission mode or being wirelessly transferred
Mode correspondingly receives the data signal for the refrigerant concentration that the central processing unit transmits, and is then sent to touch screen display
Show module；
Touch-screen display module, it is connected with signal transmission module, for receiving mistake transmitted by the signal transmission module
The data signal and real-time display for the refrigerant concentration come are to user.
Wherein, including power module and backup battery module, wherein：
Power module, it is connected respectively with external ac power source, central processing unit, for provide external ac power source
Alternating voltage is converted to direct-current working volts, is provided to central processing unit and the backup battery module；
Backup battery module, it is connected respectively with power module, central processing unit, for real-time reception and stores the electricity
The electric energy of source module transmission, and powering-off state or the voltage pulsation frequency exported occurs more than default in the power module
During value, work electricity consumption is provided to the central processing unit.
Wherein, including cross section is rectangular apparatus main body, and the top left of described device main body is provided with touch-screen
Display module, the top left of described device main body are vertically arranged with gas sampling sensor interface and shift knob, the dress
The top right end side for putting main body is provided with wired network interface and SD card slot.
Wherein, the gas sampling sensor interface respectively with the gas sampling sensor, signal operation amplifying unit
It is connected, the analog signal of the refrigerant concentration for the gas sampling sensor to be gathered is sent to signal operation and put
Big unit；
The shift knob is connected with central processing unit by data signal line, is turned on or off for control described
Central processing unit；
SD card slot, it is connected with central processing unit, for the data received by central processing unit described in real-time storage.
The technical scheme provided by the utility model more than, compared with prior art, the utility model provides
A kind of secondary refrigerant leakage supervising device of refrigeration system, it can detect the secondary refrigerant leakage situation of refrigeration system in real time, and carry in time
Show user, so as to improve the detection efficiency to secondary refrigerant leakage situation, efficiently reduce harm caused by secondary refrigerant leakage, security performance
Height, it can ensure that user's is safe to use, be advantageous to extensive popularization and application, be of great practical significance.
Brief description of the drawings
Fig. 1 is a kind of block diagram of the secondary refrigerant leakage supervising device of refrigeration system provided by the utility model；
Fig. 2 is a kind of a kind of surface structure signal of the secondary refrigerant leakage supervising device of refrigeration system provided by the utility model
Figure.
Embodiment
In order that those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and embodiment
The utility model is described in further detail.
Referring to Fig. 1, the utility model provides a kind of secondary refrigerant leakage supervising device of refrigeration system, including：
Gas sampling sensor 100, in the installing space in the refrigeration system (such as positioned in the refrigeration system
Unite in the room of installation, specifically may be mounted at the pre-determined distance position of the part with refrigerant such as compressor, such as 5 lis of distance
Rice), (it is specially the gas sampling sensor 100 itself installation in the installing space for gathering the refrigeration system in real time
Place) refrigerant concentration, the analog signal of the refrigerant concentration is then sent to signal operation amplifying unit 200；
Signal operation amplifying unit 200, it is connected with gas sampling sensor 100, for being sensed to the gas sampling
The analog signal for the refrigerant concentration that device 100 is sent is amplified processing, and is converted to the data signal of the refrigerant concentration,
It is then sent to central processor MCU 300；
Central processor MCU 300, it is connected with signal operation amplifying unit 200, is put for receiving the signal operation
The data signal for the refrigerant concentration that big unit 200 is sent, and the data signal of the refrigerant concentration is passed through into wire transmission
Mode or wireless transmission are to monitoring server 400；
Monitoring server 400, it is connected with central processor MCU 300, for passing through wire transmission mode or wireless
Transmission means correspondingly receives the data signal for the refrigerant concentration that the central processor MCU 300 transmits and shown in real time
Show to user.
In the utility model, in specific implementation, the gas sampling sensor 100 can be it is existing any one can be with
It is dense that (be specially gas sampling sensor 100 itself installation place) refrigerant is gathered in the installing space of the refrigeration system in real time
The gas sampling sensor of degree.Such as can be for the Japan model NE-NH3 that (NEMOTO) company produces at all electrochemically
Formula ammonia gas sensor, or can be the model JK50-NH3 of Ji Shunan Science and Technology Ltd.s of Shenzhen production ammonia concentration
Sensor.
In the utility model, in specific implementation, the gas sampling sensor 100 can be to freon, ammonia, R-134A
The refrigerant such as (1,1,1,2- HFC-134as) (i.e. refrigerant) carries out the detection of concentration.
In the utility model, in specific implementation, the signal operation amplifying unit 200 include signal amplification module and
Modulus (A/D) modular converter, wherein：
The signal amplification module, is connected with gas sampling sensor 100, for to the gas sampling sensor
The analog signal of the 100 refrigerant concentration sent is amplified processing；
Modulus (A/D) modular converter, is connected with the signal amplification module, central processor MCU 300 respectively,
For the analog signal for the refrigerant concentration for being amplified processing by the signal amplification module to be converted into the refrigerant
The data signal of concentration, it is then sent to central processor MCU 300.
It should be noted that generally, the analog signal that the gas sampling sensor 100 is exported is more micro-
It is weak, so to be amplified processing to the analog signal that it is exported, and it is converted into 300 treatable numeral of central processor MCU
Signal.
In the utility model, in specific implementation, the wireless transmission method can be the wireless biography of any one data
Defeated mode, such as can be the wireless transmission methods such as 3G, 4G, GPRS or WIFI；The wire transmission mode can be any
A kind of wire transmission mode of data, such as can be by way of cable LAN is attached.
In specific implementation, 3G module, 4G can be passed through between the central processor MCU 300 and monitoring server 400
Module, WIFI module or GPRS module are connected.
In specific implementation, the central processor MCU 300 can transfer data to the monitoring clothes using Transmission Control Protocol
Business device 400, so as to ensure the real-time of data transfer and reliability.
In the utility model, the central processor MCU 300 is additionally operable to receiving the signal operation amplifying unit
200 send the refrigerant concentration data signal after, by the refrigerant concentration value corresponding to the data signal of the refrigerant concentration with
Default refrigerant concentration alarming value compares, when the refrigerant concentration value corresponding to the data signal of the refrigerant concentration is more than or equal to institute
When stating default refrigerant concentration alarming value, issue the user with alarm and (at this moment illustrate that refrigerant has occurred that to let out than more serious
Dew).
It should be noted that the default refrigerant concentration alarming value can arbitrarily be set in advance according to the needs of user
Put, such as can be 100ppm (i.e. hundred a ten thousandths hundred).
In specific implementation, the alarm can be that sound and light alarm is prompted, and the ammonia detection alarm unit can lead to
Cross and send opening control signal and send opening control signal to the loudspeaker for prerecording a section audio to come in fact to LED
It is existing.Therefore, in specific implementation, the central processor MCU 300 can also be connected with presetting multiple LEDs and loudspeaker respectively
Connect, for sending opening control signal to the LED, control the LED to open, and send and open to the loudspeaker
The loudspeaker is opened in control signal, control.Therefore, the utility model effectively can prompt user to take safe handling to arrange in time
Apply, to ensure the safe operation of refrigeration system.
In the utility model, in specific implementation, the monitoring server 400 includes signal receiving module and touches screen display
Show module, wherein：
Signal transmission module, it is connected with the central processor MCU 300, for passing through wire transmission mode or nothing
Line transmission means correspondingly receives the data signal for the refrigerant concentration that the central processor MCU 300 transmits, then
It is sent to touch-screen display module；
Touch-screen display module, it is connected with signal transmission module, for receiving mistake transmitted by the signal transmission module
The data signal and real-time display for the refrigerant concentration come are to user.
In addition, in specific implementation, the touch-screen display module can be also used for receiving the control instruction (example of user's input
The control instruction of default refrigerant concentration alarming value in the central processor MCU 300 as described in adjusting and other default controls
Instruction), the central processor MCU 300 is then sent to by signal transmission module.
In specific implementation, the control instruction of user's input can be any one described central processor MCU 300
Acceptable control instruction, such as be preferably setting or modification instruction to presetting refrigerant concentration alarming value.
In the utility model, in specific implementation, in order to prevent the utility model device spread of voltage at the scene
Or unexpected power down, the secondary refrigerant leakage supervising device of refrigeration system provided by the utility model include power module and backup battery
Module, wherein：
Power module, respectively with external ac power source (such as family expenses 220V alternating current), the phase of central processor MCU 300
Connection, the alternating voltage for external ac power source to be provided are converted to direct-current working volts, are provided to the centre
Manage device MCU 300 (electric current is then passed to by the consuming parts such as signal operation amplifying unit 200 by central processor MCU 300)
And backup battery module；
Backup battery module, it is connected respectively with power module, central processor MCU 300, for real-time reception and deposits
The electric energy of the power module transmission is stored up, and powering-off state or the voltage pulsation frequency exported occurs in the power module
During more than preset value (such as voltage pulsation per second being more than or equal to 5V), work is provided to the central processor MCU 300
Electricity consumption.
Therefore, for the secondary refrigerant leakage supervising device of refrigeration system provided by the utility model, it not only has better performances
Power module, also add backup battery module, when system cut-off or voltage pulsation, backup battery module can be with
Maintain system worked well for a period of time.
Referring to Fig. 2, for the secondary refrigerant leakage supervising device of refrigeration system provided by the utility model, it sets in surface structure
Can be rectangular apparatus main body 1 including cross section, the top left of described device main body 1 is provided with touch screen display on meter
Show module 2, the top left of described device main body 1 is vertically arranged with gas sampling sensor interface 6 and shift knob 7, described
The top right end side of apparatus main body 1 is provided with wired network interface (RJ45 network interfaces) 9 and SD card slot 8.
Wherein, the gas sampling sensor interface 6 respectively with the gas sampling sensor, signal operation amplifying unit
200 are connected, and the analog signal of the refrigerant concentration for the gas sampling sensor to be gathered is sent to signal fortune
Calculate amplifying unit 200；
The shift knob 7 is connected with central processor MCU 300 by data signal line, for control open or
Central processor MCU 300 is closed, the secondary refrigerant leakage supervising device is turned on or off so as to realize；
SD card slot 8, it is connected with central processor MCU 300, for central processor MCU 300 described in real-time storage
Received data.
In the utility model, in specific implementation, the central processor MCU 300 can be that ST Microelectronics gives birth to
The model stm32f103zet6 of production single-chip microcomputer, the single-chip microcomputer are based on ARM kernels, excellent performance, can complete industry spot number
According to collection, store, conversion, remote transmission function, and peripheral communication interface can be provided：Such as 485 communication ports.
In the utility model, in specific implementation, the monitoring server 400 can include at least one calculating owner
Machine, it can also be cloud server, the central processing unit is stored by the data storage (such as hard disk) of cloud server
The data signal and real-time display for the refrigerant concentration that MCU 300 is transmitted are to user.Therefore, the user such as staff can
(for example, tested with monitoring the installing space of multiple refrigeration systems in Office PC or by cloud server can
Room) in refrigerant concentration data.
Compared with prior art, the secondary refrigerant leakage supervising device of a kind of refrigeration system provided by the utility model, it has
Following beneficial effect：
1st, the utility model has touch-screen display module, human-computer interaction can be realized in monitoring server 400, intuitively
Strong, the simple operation of property；
2nd, the utility model can pass through radio connection or wired company by setting the monitoring server 400
The mode of connecing reads the refrigerant concentration data in the installing space (being, for example, laboratory) for obtaining the refrigeration system, so as to energy
Enough overcome current refrigerating system coolant leakage monitoring not in place, the problem of live data can not feed back to monitoring personnel in time,
The utility model can detect the secondary refrigerant leakage situation of refrigeration system in real time, and prompt user in time, improve to secondary refrigerant leakage feelings
The detection efficiency of condition, ensure the personal safety of user, avoid the occurrence of potential safety hazard；
3rd, the utility model can utilize cable-network transmission data, have speed it is fast, stably, strong antijamming capability it is excellent
Point, and networked forms enrich, suitable for various field network situations；
4th, the utility model can utilize cable-network transmission data, thus can effectively avoid being wirelessly transferred it is unreliable
Property, the advantage of network-resource intensive is effectively utilized, has saved cost, and it is simple in construction, and easy to operate, cost is cheap, user
In the monitoring server 400 on webpage can realize it is cold in the installing space (be, for example, laboratory) of the refrigeration system
Matchmaker's concentration data is browsed, monitors and analyzed.
In summary, compared with prior art, the secondary refrigerant leakage monitoring of a kind of refrigeration system provided by the utility model
Device, it can detect the secondary refrigerant leakage situation of refrigeration system in real time, and prompt user in time, so as to improve to secondary refrigerant leakage feelings
The detection efficiency of condition, harm caused by secondary refrigerant leakage being efficiently reduced, security performance is high, can ensure that user's is safe to use,
Be advantageous to extensive popularization and application, be of great practical significance.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (9)
- A kind of 1. secondary refrigerant leakage supervising device of refrigeration system, it is characterised in that including：Gas sampling sensor, in the installing space in the refrigeration system, for gathering the refrigeration system in real time Refrigerant concentration in installing space, the analog signal of the refrigerant concentration is then sent to signal operation amplifying unit；Signal operation amplifying unit, it is connected with gas sampling sensor, for the institute sent to the gas sampling sensor The analog signal for stating refrigerant concentration is amplified processing, and is converted to the data signal of the refrigerant concentration, in being then sent to Central processor；Central processing unit, it is connected with signal operation amplifying unit, the institute sent for receiving the signal operation amplifying unit The data signal of refrigerant concentration is stated, and the data signal of the refrigerant concentration is passed through into wire transmission mode or the side of being wirelessly transferred Formula is transferred to monitoring server；Monitoring server, it is connected with central processing unit, for correspondingly being connect by wire transmission mode or wireless transmission method Receive the data signal for the refrigerant concentration that the central processing unit transmits and real-time display is to user.
- 2. the secondary refrigerant leakage supervising device of refrigeration system as claimed in claim 1, it is characterised in that the signal operation amplification Unit includes signal amplification module and analog-to-digital conversion module, wherein：The signal amplification module, is connected with gas sampling sensor, for the institute sent to the gas sampling sensor The analog signal for stating refrigerant concentration is amplified processing；The analog-to-digital conversion module, it is connected respectively with the signal amplification module, central processing unit, for the letter will to be passed through The analog signal for the refrigerant concentration that number amplification module is amplified processing is converted to the data signal of the refrigerant concentration, so After be sent to central processing unit.
- 3. the secondary refrigerant leakage supervising device of refrigeration system as claimed in claim 1, it is characterised in that the central processing unit and It is connected between monitoring server by 3G module, 4G modules, WIFI module or GPRS module.
- 4. the secondary refrigerant leakage supervising device of refrigeration system as claimed any one in claims 1 to 3, it is characterised in that described Central processing unit is additionally operable to after the data signal for the refrigerant concentration that the signal operation amplifying unit is sent is received, by this Refrigerant concentration value corresponding to the data signal of refrigerant concentration is compared with default refrigerant concentration alarming value, when the number of the refrigerant concentration When refrigerant concentration value corresponding to word signal is more than or equal to the default refrigerant concentration alarming value, issues the user with alarm and carry Show.
- 5. the secondary refrigerant leakage supervising device of refrigeration system as claimed in claim 4, it is characterised in that the central processing unit is also It is connected respectively with presetting multiple LEDs and loudspeaker.
- 6. the secondary refrigerant leakage supervising device of refrigeration system as claimed any one in claims 1 to 3, it is characterised in that described Monitoring server includes signal receiving module and touch-screen display module, wherein：Signal transmission module, it is connected with the central processing unit, for passing through wire transmission mode or wireless transmission method The corresponding data signal for receiving the refrigerant concentration that the central processing unit transmits, it is then sent to touch-screen and shows mould Block；Touch-screen display module, it is connected with signal transmission module, for receiving what is come transmitted by the signal transmission module The data signal and real-time display of the refrigerant concentration are to user.
- 7. the secondary refrigerant leakage supervising device of refrigeration system as claimed any one in claims 1 to 3, it is characterised in that including Power module and backup battery module, wherein：Power module, it is connected respectively with external ac power source, central processing unit, for the exchange for providing external ac power source Voltage conversion is direct-current working volts, is provided to central processing unit and the backup battery module；Backup battery module, it is connected respectively with power module, central processing unit, for real-time reception and stores the power supply mould The electric energy of block transmission, and exceed preset value in the voltage pulsation frequency that the power module occurs powering-off state or exported When, provide work electricity consumption to the central processing unit.
- 8. the secondary refrigerant leakage supervising device of refrigeration system as claimed any one in claims 1 to 3, it is characterised in that including Cross section is rectangular apparatus main body (1), and the top left of described device main body (1) is provided with touch-screen display module, institute The top left for stating apparatus main body (1) is vertically arranged with gas sampling sensor interface (6) and shift knob (7), described device The top right end side of main body (1) is provided with wired network interface (9) and SD card slot (8).
- 9. the secondary refrigerant leakage supervising device of refrigeration system as claimed in claim 8, it is characterised in that the gas sampling sensing Device interface (6) is connected with the gas sampling sensor, signal operation amplifying unit respectively, for the gas sampling to be passed The analog signal for the refrigerant concentration that sensor is gathered is sent to signal operation amplifying unit；The shift knob (7) is connected with central processing unit by data signal line, is turned on or off for control described Central processing unit；SD card slot (8), is connected with central processing unit, for the data received by central processing unit described in real-time storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607920.9U CN206831892U (en) | 2017-05-27 | 2017-05-27 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607920.9U CN206831892U (en) | 2017-05-27 | 2017-05-27 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206831892U true CN206831892U (en) | 2018-01-02 |
Family
ID=60773928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720607920.9U Expired - Fee Related CN206831892U (en) | 2017-05-27 | 2017-05-27 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206831892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958969A (en) * | 2017-05-27 | 2017-07-18 | 天津天商酷凌科技有限公司 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
-
2017
- 2017-05-27 CN CN201720607920.9U patent/CN206831892U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958969A (en) * | 2017-05-27 | 2017-07-18 | 天津天商酷凌科技有限公司 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203643427U (en) | Indoor air quality comprehensive-detection system | |
| CN103280888A (en) | Household intelligent integrated electric energy control device | |
| CN102661758B (en) | Movable and portable energy consumption detector | |
| CN206989413U (en) | A kind of air-conditioner set remote monitoring system | |
| CN104490230A (en) | Remote intelligent post office box and control method for remote intelligent post office box | |
| CN202069948U (en) | Infusion monitoring system | |
| CN206831892U (en) | A kind of secondary refrigerant leakage supervising device of refrigeration system | |
| CN201607484U (en) | Household electricity consumption monitoring apparatus | |
| CN206096878U (en) | Machine room monitoring equipment | |
| CN201335992Y (en) | Remote temperature supervisory control system based on power line carrier | |
| CN202974323U (en) | Portable on-line detection system | |
| CN203069733U (en) | A vibration-detection-based partial discharging point positioning device used for GIS tests | |
| CN202614339U (en) | Monitoring system for flow state data of gas gauge flow meters | |
| CN209928588U (en) | Domestic natural gas leakage alarm device | |
| CN106958969A (en) | A kind of secondary refrigerant leakage supervising device of refrigeration system | |
| CN202533100U (en) | Wireless humiture monitoring system | |
| CN205983101U (en) | Air -source heat bump water heater intelligent monitoring system based on thing networking | |
| CN107515580A (en) | A kind of coal gas safety device for accessing intelligent household information management system | |
| CN204336574U (en) | Long-distance intelligent P.O. Box | |
| CN208888355U (en) | Fire-fighting equipment power supply monitoring system based on ZigBee technology | |
| CN203053482U (en) | Wireless multiparameter environmental monitoring system | |
| CN202472384U (en) | Environmental data acquisition instrument based on small RTOS (Real Time Operating System) | |
| CN202584404U (en) | Wireless water meter acquisition and control device | |
| CN205582245U (en) | Power consumption information acquisition device | |
| CN211352558U (en) | Energy-saving illumination controller for ground storehouse radar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180102 Termination date: 20200527 |