CN114234419A - Dynamic host controller of central air conditioner - Google Patents

Dynamic host controller of central air conditioner Download PDF

Info

Publication number
CN114234419A
CN114234419A CN202111487239.2A CN202111487239A CN114234419A CN 114234419 A CN114234419 A CN 114234419A CN 202111487239 A CN202111487239 A CN 202111487239A CN 114234419 A CN114234419 A CN 114234419A
Authority
CN
China
Prior art keywords
air conditioner
host controller
controller
central air
dynamic host
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.)
Pending
Application number
CN202111487239.2A
Other languages
Chinese (zh)
Inventor
李敏
胡凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Zhonge Feilu Technology Co ltd
Original Assignee
Hubei Zhonge Feilu Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hubei Zhonge Feilu Technology Co ltd filed Critical Hubei Zhonge Feilu Technology Co ltd
Priority to CN202111487239.2A priority Critical patent/CN114234419A/en
Publication of CN114234419A publication Critical patent/CN114234419A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136Forced ventilation, e.g. by fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a dynamic host controller of a central air conditioner, which comprises an air conditioner host body, wherein a maintenance port is formed in the surface of one side of the air conditioner host body, and a mounting plate is arranged in the maintenance port. According to the invention, the temperature sensor fixed on the surface of the mounting plate can detect the temperature data of the area where the host controller is located in real time, and then the temperature data is fed back to the PLC in the form of an electric signal, when the detected temperature data is greater than the preset value of the PLC, the PLC starts the cooling fan installed facing the host controller, so that the cooling fan blows air to the host controller, the air-cooled heat dissipation of the host controller is realized, and the advantages of automatic heat dissipation and reduction of heat dissipation electricity consumption are achieved.

Description

Dynamic host controller of central air conditioner
Technical Field
The invention relates to the technical field of central air conditioners, in particular to a dynamic host controller of a central air conditioner.
Background
The main machine of central air conditioner is composed of one or more cold and heat source systems and multiple air conditioning systems, the system is different from the traditional refrigerant type air conditioner, such as a single machine, VRV, to intensively process air to reach the comfort requirement, the liquid gasification refrigeration principle is adopted to provide the required cooling capacity for the air conditioning system to offset the heat load of indoor environment, the heating system provides the required heat for the air conditioning system to offset the cold and heat load of indoor environment, and the dynamic main machine of central air conditioner is additionally provided with an energy storage system on the basis of the original main machine to conveniently distribute the flow direction of the output cold (heat) capacity at proper time, automatically balance the tail end requirement and the cold (heat) capacity stored by the dynamic energy storage device, ensure that the cold and heat source equipment always operates at the efficiency, and reduce the operation time and the number of the cold (heat) source equipment.
The prior art has the following problems:
the dynamic host of the existing central air conditioner is in a continuous operation state due to the fact that a controller arranged in the host is in the continuous operation state in the use process, the phenomenon of high-temperature overheating is very easy to occur, if the controller is not cooled in time, the normal operation of the whole central air conditioning system can be influenced, meanwhile, the shell of the dynamic host controller of the existing central air conditioner needs to be detached for overhauling and maintaining, and the convenience and the efficiency of maintenance are influenced.
We therefore propose a central air conditioning dynamic host controller that addresses the above disadvantages.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a dynamic host controller of a central air conditioner.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a dynamic host controller of central air conditioning, includes the air conditioner host computer body, air conditioner host computer body side surface has been seted up and has been maintained the mouth, and is provided with the mounting panel in maintaining the mouth, the central department fastening of mounting panel side surface installs temperature sensor, temperature sensor's peripheral welding has a plurality of erection columns, and the terminal surface of a plurality of erection columns all seted up the thread groove, mounting panel one side is provided with the host controller, and the four corners of host controller all through the thread groove threaded connection of crew cut screw with the erection column, air conditioner host computer body internal face corresponds host controller fastening mounting has radiator fan, air conditioner host computer body opposite side surface is fixed with the PLC controller.
Preferably, the peripheral welding of maintenance mouth has a plurality of guide arms, and the surface of a plurality of guide arms has all cup jointed cylindrical form uide bushing, the mounting panel deviates from temperature sensor's one side welding has the support column, and the skin weld of support column has a plurality of support bars, and is a plurality of the uide bushing has all been welded to the one end of support bar, the edge welding on mounting panel surface has the adsorption strip, and the surface that adsorbs the strip inlays to establish and installs the magnetic path, the magnetic path adsorbs with the shell of air conditioner host computer body and is connected.
Preferably, the support bars and the guide sleeves are provided with a plurality of groups, and the plurality of groups of support bars and the guide sleeves correspond to the guide rods one to one.
Preferably, the number of the adsorption strips is two, and the two adsorption strips are symmetrical about the horizontal center line of the mounting plate.
Preferably, the PLC controller and the cooling fan are connected with a power supply of the air conditioner main body through wires.
Preferably, a plurality of radiating ports with rectangular structures are uniformly formed in the side wall surface of the main air conditioner body.
Preferably, the output end of the PLC controller is electrically connected to the cooling fan, and the temperature sensor is electrically connected to the PLC controller through a wire.
Preferably, the bottom of air conditioner host computer body is provided with the removal seat that the cross-section is U type structure, and removes the inboard both sides of seat and all bond the sheet rubber to the four corners of removing the seat bottom surface all installs and removes the wheel.
Compared with the prior art, the invention has the beneficial effects that;
1. according to the invention, the temperature sensor fixed on the surface of the mounting plate can detect the temperature data of the area where the host controller is located in real time, and further feed the temperature data back to the PLC in the form of an electric signal, when the detected temperature data is greater than the preset value of the PLC, the PLC starts the cooling fan installed facing the host controller, so that the cooling fan blows air to the host controller, and the air-cooled heat dissipation of the host controller is realized.
2. According to the invention, the magnetic block of the adsorption strip is separated from the adsorption state with the shell of the main body of the air conditioner by drawing the support column on the surface of the mounting plate, and the plurality of guide sleeves welded on the surface of the support column through the support bar slide with the plurality of guide rods on the periphery of the maintenance port, so that the support column drives the mounting plate and the main controller to be separated from the maintenance port and expose outside the main body of the air conditioner, and the maintenance of the main controller is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dynamic host controller of a central air conditioner according to the present invention;
FIG. 2 is a left side view of a dynamic host controller of a central air conditioner according to the present invention;
FIG. 3 is a schematic diagram of a mounting plate structure of a dynamic host controller of a central air conditioner according to the present invention;
FIG. 4 is a right side view of a dynamic host controller of a central air conditioner according to the present invention;
fig. 5 is a top view of a movable base of a dynamic host controller of a central air conditioner according to the present invention.
Illustration of the drawings:
1. an air conditioner main body; 2. a PLC controller; 3. a heat radiation fan; 4. a heat dissipation port; 5. mounting a column; 6. mounting a plate; 7. a support pillar; 8. a host controller; 9. a supporting strip; 10. a guide bar; 11. a guide sleeve; 12. an adsorption strip; 13. a magnetic block; 14. maintaining the mouth; 15. a temperature sensor; 16. a movable seat; 17. a rubber sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a dynamic host controller of a central air conditioner comprises a main body 1 of the air conditioner, a maintenance port 14 is formed on one side surface of the main body 1 of the air conditioner, a mounting plate 6 is arranged in the maintenance port 14, a temperature sensor 15 is fixedly mounted at the center of one side surface of the mounting plate 6, a plurality of mounting columns 5 are welded on the periphery of the temperature sensor 15, thread grooves are formed in the end surfaces of the mounting columns 5, a host controller 8 is arranged on one side of the mounting plate 6, four corners of the host controller 8 are in threaded connection with the thread grooves of the mounting columns 5 through flat head screws, a cooling fan 3 is fixedly mounted on the inner wall surface of the main body 1 of the air conditioner corresponding to the host controller 8, a PLC controller 2 is fixed on the other side surface of the main body 1 of the air conditioner, and the temperature sensor 15 fixed on the surface of the mounting plate 6 can detect the temperature data of the area where the host controller 8 is located in real time, and then with the form of signal of telecommunication with temperature data feedback to PLC controller 2, when the temperature data who detects is greater than 2 default of PLC controller, PLC controller 2 then opens radiator fan 3 towards the installation of host controller 8, make radiator fan 3 blow the air to host controller 8, realize the air-cooled heat dissipation of host controller 8, have automatic heat dissipation and reduce the advantage of heat dissipation electricity consumption, and simultaneously, because host controller 8 has the erection column 5 fixed connection of thread groove on tack screw and the mounting panel 6 through running through its corner, make to have the clearance between host controller 8 and the mounting panel 6, promote the ventilation effect after host controller 8 installs, be favorable to the quick heat dissipation of host controller 8.
In one embodiment, a plurality of guide rods 10 are welded on the periphery of the maintenance port 14, cylindrical guide sleeves 11 are sleeved on the surfaces of the guide rods 10, a support column 7 is welded on one surface of the mounting plate 6, which is far away from the temperature sensor 15, a plurality of support bars 9 are welded on the surface of the support column 7, guide sleeves 11 are welded on one ends of the support bars 9, an adsorption bar 12 is welded on the edge of the surface of the mounting plate 6, a magnetic block 13 is embedded and installed on the surface of the adsorption bar 12, the magnetic block 13 is in adsorption connection with the shell of the main air conditioner body 1, the magnetic block 13 of the adsorption bar 12 is enabled to be separated from the adsorption state with the shell of the main air conditioner body 1 by pulling the support columns 7 on the surface of the mounting plate 6, the guide sleeves 11 welded on the surface of the support column 7 through the support bars 9 slide with the guide rods 10 on the periphery of the maintenance port 14, so that the support column 7 drives the mounting plate 6 and the main air conditioner controller 8 to be separated from the maintenance port 14 and expose outside the main air conditioner body 1, make things convenient for host controller 8's maintenance and maintenance, compare in the maintenance mode of traditional dismantlement shell form, effectively promote the convenient degree and the efficiency that host controller 8 overhauld.
In one embodiment, the supporting bars 9 and the guiding sleeves 11 are provided with a plurality of groups, and the plurality of groups of supporting bars 9 and guiding sleeves 11 correspond to the plurality of guide rods 10 one by one, and the plurality of groups of supporting bars 9 and guiding sleeves 11 are matched with the plurality of guide rods 10, so that the moving stability of the mounting plate 6 is increased.
In one embodiment, two absorption strips 12 are provided, and the two absorption strips 12 are symmetrical about the horizontal center line of the mounting plate 6, so that the absorption type fixing of the mounting plate 6 is facilitated through the two absorption strips 12 and the magnetic blocks 13 embedded and mounted on the surfaces of the two absorption strips 12.
In one embodiment, the PLC controller 2 and the cooling fan 3 are both connected to the power supply of the main air conditioner body 1 through wires, that is, the main air conditioner body 1, the PLC controller 2 and the cooling fan 3 share the same power supply.
In one embodiment, a plurality of heat dissipation ports 4 with a rectangular structure are uniformly formed in the side wall surface of the main air conditioner body 1, and ventilation and heat dissipation are facilitated through the heat dissipation ports 4 of the main air conditioner body 1.
In one embodiment, the output end of the PLC controller 2 is electrically connected to the cooling fan 3, the temperature sensor 15 is electrically connected to the PLC controller 2 through a wire, and the control circuit of the PLC controller 2 can be implemented through simple programming by a person skilled in the art, which belongs to the common general knowledge in the art, and is only used without modification, so the detailed description of the control mode and circuit connection is omitted.
In one embodiment, the bottom of the main air conditioner body 1 is provided with a movable seat 16 with a U-shaped cross section, rubber sheets 17 are adhered to two sides of the inner side of the movable seat 16, and movable wheels are installed at four corners of the bottom surface of the movable seat 16, so that the main air conditioner body 1 can be flexibly moved conveniently by the movable seat 16 and the movable wheels, and the rubber sheets 17 can increase the tightness of the connection between the movable seat 16 and the main air conditioner body 1.
The working principle is as follows: when the air conditioner is used, the air conditioner main body 1 is installed to a proper position, a power supply is connected, when heat is radiated, temperature data of the area where the main controller 8 is located can be detected in real time through the temperature sensor 15 fixed on the surface of the installation plate 6, the temperature data is fed back to the PLC controller 2 in the form of electric signals, when the detected temperature data is larger than the preset value of the PLC controller 2, the PLC controller 2 starts the heat radiation fan 3 installed facing the main controller 8, the heat radiation fan 3 blows air to the main controller 8, the air cooling and heat radiation of the main controller 8 are realized, the advantages of automatic heat radiation and reduction of heat radiation electricity consumption are achieved, meanwhile, as the main controller 8 is fixedly connected with the installation column 5 with the thread groove on the installation plate 6 through the flat head screw penetrating through the corner of the main controller 8, a gap exists between the main controller 8 and the installation plate 6, and the ventilation effect after the main controller 8 is installed is improved, be favorable to host controller 8's quick heat dissipation, when maintaining, through the support column 7 of drawing the mounting panel 6 surface, make the magnetic path 13 of adsorption strip 12 break away from with the adsorption state of air conditioner host computer body 1 shell, and support column 7 surface is through a plurality of uide bushings 11 of support bar 9 welded and take place to slide with a plurality of guide arms 10 of maintaining mouthful 14 outlying, make support column 7 drive mounting panel 6 and host controller 8 break away from maintenance mouthful 14 and show in the air conditioner host computer body 1 outside, make things convenient for the maintenance and the maintenance of host controller 8, compare in the maintenance mode of traditional dismantlement shell form, effectively promote the convenience degree and the efficiency that host controller 8 overhauld.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A dynamic host controller of a central air conditioner comprises an air conditioner host body (1) and is characterized in that a maintenance opening (14) is arranged on the surface of one side of the air conditioner host body (1), and a mounting plate (6) is arranged in the maintenance opening (14), a temperature sensor (15) is fixedly mounted at the center of the surface of one side of the mounting plate (6), a plurality of mounting columns (5) are welded on the periphery of the temperature sensor (15), the end surfaces of the mounting columns (5) are all provided with thread grooves, one side of the mounting plate (6) is provided with a host controller (8), and four corners of the host controller (8) are in threaded connection with the thread groove of the mounting column (5) through flat head screws, the inner wall surface of the air conditioner main body (1) is tightly provided with a cooling fan (3) corresponding to the main controller (8), and a PLC (programmable logic controller) (2) is fixed on the other side surface of the air conditioner main body (1).
2. The dynamic host controller of central air conditioner according to claim 1, characterized in that, the peripheral welding of maintenance mouth (14) has a plurality of guide arms (10), and the surface of a plurality of guide arms (10) has all cup jointed cylindrical guide sleeve (11), the one side welding that mounting panel (6) deviates from temperature sensor (15) has support column (7), and the skin weld of support column (7) has a plurality of support bars (9), and is a plurality of guide sleeve (11) have all been welded to the one end of support bar (9), the edge welding on mounting panel (6) surface has adsorption strip (12), and the surface of adsorption strip (12) inlays to establish and installs magnetic path (13), magnetic path (13) are connected with the shell absorption of air conditioner host body (1).
3. The dynamic host controller of central air conditioner according to claim 2, characterized in that the support bars (9) and the guide sleeves (11) are provided with multiple groups, and the multiple groups of support bars (9) and guide sleeves (11) correspond to the guide rods (10) one by one.
4. The dynamic host controller of central air conditioner according to claim 2, characterized in that there are two suction strips (12), and the two suction strips (12) are symmetrical about the horizontal center line of the mounting plate (6).
5. The dynamic host controller of central air conditioner according to claim 1, wherein the PLC controller (2) and the heat dissipation fan (3) are connected to the power supply of the main body (1) of air conditioner through wires.
6. The dynamic host controller of the central air conditioner according to claim 1, wherein the side wall surface of the main body (1) of the air conditioner is uniformly provided with a plurality of heat dissipation ports (4) with rectangular structures.
7. The dynamic host controller of central air conditioner as claimed in claim 1, wherein the output terminal of the PLC controller (2) is electrically connected to the heat dissipation fan (3), and the temperature sensor (15) is electrically connected to the PLC controller (2) through a wire.
8. The dynamic host controller of central air conditioner according to claim 1, characterized in that the bottom of the main body (1) of air conditioner is provided with a movable base (16) with a U-shaped cross section, rubber sheets (17) are adhered to both sides of the inner side of the movable base (16), and movable wheels are installed at four corners of the bottom of the movable base (16).
CN202111487239.2A 2021-12-07 2021-12-07 Dynamic host controller of central air conditioner Pending CN114234419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111487239.2A CN114234419A (en) 2021-12-07 2021-12-07 Dynamic host controller of central air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111487239.2A CN114234419A (en) 2021-12-07 2021-12-07 Dynamic host controller of central air conditioner

Publications (1)

Publication Number Publication Date
CN114234419A true CN114234419A (en) 2022-03-25

Family

ID=80753739

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111487239.2A Pending CN114234419A (en) 2021-12-07 2021-12-07 Dynamic host controller of central air conditioner

Country Status (1)

Country Link
CN (1) CN114234419A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2011128565A (en) * 2011-07-08 2013-01-20 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "СИСТЕМЫ СВЯЗИ И ТЕХНИЧЕСКОГО КОНТРОЛЯ" ООО "Системы СТК" THERMOELECTRIC CLIMATE CONTROL SYSTEM
CN202769837U (en) * 2012-07-31 2013-03-06 深圳麦克维尔空调有限公司 Air conditioner and outdoor machine of air conditioner
CN206113226U (en) * 2016-10-21 2017-04-19 山东广辰环保科技有限公司 Energy -conserving intelligence control system of central air conditioning refrigeration host
CN206790832U (en) * 2017-05-31 2017-12-22 安徽沃兰朵电源技术有限公司 A kind of convenient assembling controller for solar fixed mechanism
CN213686331U (en) * 2020-12-31 2021-07-13 宁波摩星光电有限公司 Intelligent LED panel light

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2011128565A (en) * 2011-07-08 2013-01-20 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "СИСТЕМЫ СВЯЗИ И ТЕХНИЧЕСКОГО КОНТРОЛЯ" ООО "Системы СТК" THERMOELECTRIC CLIMATE CONTROL SYSTEM
CN202769837U (en) * 2012-07-31 2013-03-06 深圳麦克维尔空调有限公司 Air conditioner and outdoor machine of air conditioner
CN206113226U (en) * 2016-10-21 2017-04-19 山东广辰环保科技有限公司 Energy -conserving intelligence control system of central air conditioning refrigeration host
CN206790832U (en) * 2017-05-31 2017-12-22 安徽沃兰朵电源技术有限公司 A kind of convenient assembling controller for solar fixed mechanism
CN213686331U (en) * 2020-12-31 2021-07-13 宁波摩星光电有限公司 Intelligent LED panel light

Similar Documents

Publication Publication Date Title
CN211531588U (en) Controller case with good heat dissipation effect
CN102882408A (en) Power unit of inverter
CN108449047B (en) Photovoltaic photo-thermal comprehensive utilization system and method
CN114234419A (en) Dynamic host controller of central air conditioner
CN213546893U (en) SVG on-line monitoring device
CN208620664U (en) Air source heat pump frequency conversion drive module heat dissipating vent passages
CN112020283A (en) Industrial refrigeration equipment for electrical cabinet
CN205452884U (en) Switch board cooling system of injection molding machine
CN214065112U (en) Central air-conditioning refrigerating device with low-temperature refrigeration and dehumidification functions
CN213646261U (en) Partitioned gas protection material increase equipment
CN210892094U (en) Temperature control grid ventilation floor used on machine room
CN203520288U (en) Refrigerating system for data room
CN204786799U (en) Motor driver for fan -coil unit that direct current is brushless
CN106532520A (en) Self-cooling cabinet
CN208185035U (en) A kind of education computer fan
CN206412883U (en) A kind of two-step stepper motor applied to Automated condtrol
CN217823779U (en) Low-voltage distribution room multi-section bus power supply mutual standby intelligent control device
CN218237796U (en) Defrosting device for central air conditioner external unit
CN215571103U (en) Intelligent control device of magnetic suspension central air-conditioning system
CN213841166U (en) Semiconductor air conditioner
CN215372284U (en) Heat dissipation type solar street lamp
CN210641196U (en) Dustproof controller of high easy dismouting of heat dispersion
CN210630139U (en) Automatic gas switching controller
CN213983838U (en) Air conditioner energy-saving appliance easy to install
CN216647980U (en) Transformer installation device that electric power engineering used

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20220325