CN211233188U - Hotel air conditioner host control system - Google Patents
Hotel air conditioner host control system Download PDFInfo
- Publication number
- CN211233188U CN211233188U CN201921638993.XU CN201921638993U CN211233188U CN 211233188 U CN211233188 U CN 211233188U CN 201921638993 U CN201921638993 U CN 201921638993U CN 211233188 U CN211233188 U CN 211233188U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistor
- frequency converter
- converter
- diode
- 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
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model discloses an air conditioner host control system of hotel, including compressor unit, first converter, a water pump, the fan, flow sensor, pressure sensor, the second converter, the third converter, temperature and humidity sensor, central controller and power module, central controller respectively with first converter, second converter and third converter are connected, compressor unit is connected with first converter, flow sensor is connected with first converter, the water pump is connected with the second converter, the second converter is connected with temperature and humidity sensor, pressure sensor is connected with first converter, the fan is connected with the third converter, the third converter is connected with temperature and humidity sensor, power module is connected with central controller, be used for the power supply. Implement the utility model discloses an air conditioner host control system in hotel has following beneficial effect: the hotel host startup state and temperature regulation can be regulated according to indoor temperature and humidity, the energy-saving and environment-friendly effects are achieved, and the service life of the central air conditioner is prolonged.
Description
Technical Field
The utility model relates to a hotel's air conditioner control field, in particular to hotel's air conditioner host control system.
Background
Along with the development of society, the building area per capita is continuously increased, the requirements of people on the building environment are higher and higher, a central air-conditioning system is very important in the design and planning of a hotel, and the air-conditioning system of the hotel is a system for delivering cold air, warm air and fresh air to each area of the hotel. High-quality air conditioning equipment and air conditioning effect are guarantee of hotel management service. The existing central air conditioner also adopts the old control mode, namely: the purpose of adjusting the temperature is achieved by changing the number of the starting and stopping units of the compressor unit, the water pump and the fan. The hotel host computer startup state and temperature adjustment can not be automatically adjusted, electric energy waste can be caused to a certain extent, and the effects of energy conservation and environmental protection cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide one kind and can adjust hotel host computer start state and temperature regulation according to indoor temperature humidity, reach energy-concerving and environment-protective effect, prolong central air conditioning's life's hotel air conditioner host computer control system.
The utility model provides a technical scheme that its technical problem adopted is: a hotel air conditioner host control system is constructed, and comprises a compressor unit, a first frequency converter, a water pump, a fan, a flow sensor, a pressure sensor, a second frequency converter, a third frequency converter, a temperature and humidity sensor, a central controller and a power module, wherein the central controller is respectively connected with the first frequency converter, the second frequency converter and the third frequency converter through field buses, the compressor unit is connected with the first frequency converter, the flow sensor is arranged on the water pump, the flow sensor is connected with the first frequency converter, the water pump is connected with the second frequency converter, the second frequency converter is connected with the temperature and humidity sensor, the pressure sensor is arranged on the fan, the pressure sensor is connected with the first frequency converter, the fan is connected with the third frequency converter, and the third frequency converter is connected with the temperature and humidity sensor, the power supply module is connected with the central controller and used for supplying power.
The utility model discloses an among hotel air conditioner host control system, power module includes voltage input end, first resistance, first electric capacity, first diode, second resistance, transformer, second electric capacity, voltage output end, second diode, fourth resistance, third electric capacity, fourth electric capacity, fifth electric capacity, third resistance, first triode, third stabilivolt, sixth electric capacity and power supply, voltage input end respectively with one end of first resistance, one end of first electric capacity and one end of the primary coil of transformer are connected, the other end of first resistance and the other end of first electric capacity all with the negative pole of first diode is connected, the positive pole of first diode and the other end of the primary coil of transformer all with one end of second resistance are connected, the other end ground connection of second resistance;
one end of a first secondary coil of the transformer is respectively connected with the anode of the second capacitor and the voltage output end, the other end of the first secondary coil of the transformer is connected with the cathode of the second capacitor, one end of a second secondary coil of the transformer is respectively connected with the cathode of the second diode and one end of a fourth resistor, the other end of the fourth resistor is respectively connected with the anode of the third capacitor, the anode of a fifth capacitor, one end of a third resistor and the collector of the first triode, the cathode of the third capacitor is respectively connected with the other end of the second secondary coil of the transformer and the anode of the fourth capacitor, the base of the first triode is respectively connected with the other end of the third resistor and the cathode of the third voltage regulator tube, and the emitter of the first triode is respectively connected with the anode of the sixth capacitor and the power supply, and the anode of the second diode is respectively connected with the cathode of the fourth capacitor, the anode of the third voltage regulator tube and the cathode of the sixth capacitor.
In the hotel air conditioner host control system, the resistance of the fourth resistor is 43k Ω.
In the hotel air conditioner host control system, the power module includes a fourth diode, an anode of the fourth diode is connected to an emitter of the first triode, and a cathode of the fourth diode is connected to an anode of the power supply and an anode of the sixth capacitor.
In the hotel air conditioner host control system of the present invention, the fourth diode is provided with a model E-822.
Hotel air conditioner host control system in, power module includes the fifth resistance, the one end of fifth resistance with the other end of the second secondary coil of transformer is connected, the other end of fifth resistance respectively with the negative pole of third electric capacity and the positive pole of fourth electric capacity are connected.
In the hotel air conditioner host control system, the resistance of the fifth resistor is 52k Ω.
In the hotel air conditioner host control system of the present invention, the first triode is an NPN-type triode.
Implement the utility model discloses an air conditioner host control system in hotel has following beneficial effect: owing to be equipped with compressor unit, first converter, water pump, fan, flow sensor, pressure sensor, second converter, third converter, temperature and humidity sensor, central controller and power module, this hotel's air conditioner host control system adopts the temperature closed loop control mode, and the accessible detects indoor ambient temperature, the automatically regulated amount of wind, along with weather, heat load's change automatically regulated, temperature variation is little, adjusts rapidly, consequently the utility model discloses can adjust hotel's host computer start state and temperature regulation according to indoor temperature humidity, reach energy-concerving and environment-protective effect, extension central air conditioning's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the hotel air conditioner host control system of the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses in the hotel air conditioner host control system embodiment, this hotel air conditioner host control system's schematic structure diagram is shown in figure 1. In fig. 1, the hotel air conditioner host control system includes a compressor unit 1, a first frequency converter 2, a water pump 3, a fan 4, a flow sensor 5, a pressure sensor 6, a second frequency converter 7, a third frequency converter 8, a temperature and humidity sensor 9, a central controller 10 and a power module 11, wherein the central controller 10 is respectively connected with the first frequency converter 2, the second frequency converter 7 and the third frequency converter 8 through a field bus, the central controller 10 is used for monitoring the working state of the system, the operating frequency of the first frequency converter 2, the second frequency converter 7 and the third frequency converter 8 can be changed, and the indoor temperature control is more accurate. The hotel air conditioner host control system has the advantages that the power consumption is greatly reduced, and the energy-saving and environment-friendly effects are achieved.
Compressor unit 1 is connected with first converter 2, and first converter 2 can soft start compressor unit 1, reduces impact current greatly, reduces compressor unit 1's motor bearing wearing and tearing, extension bearing life.
The flow sensor 5 is arranged on the water pump 3 and used for measuring the flow speed of the water pump 3. The flow sensor 5 is connected with the first frequency converter 2, and when the outlet water flow rate of the water pump 3 measured by the flow sensor 5 changes, the flow sensor 5 can change the operating frequency of the first frequency converter 2, so that the working state of the compressor unit 1 is changed.
The water pump 3 is connected with the second frequency converter 7, and the flow of the water pump 3 can be adjusted directly by changing the operating frequency of the second frequency converter 7. The valve arranged at the water outlet of the water pump 3 can be reduced or eliminated. The second frequency converter 7 is connected with a temperature and humidity sensor 9, and the temperature and humidity sensor 9 is arranged indoors and used for detecting indoor temperature and humidity. If the indoor temperature is different from the set temperature, the temperature and humidity sensor 9 transmits a signal to the second frequency converter 7, and then the second frequency converter 7 changes the operating frequency of the water pump 3, so that the flow detected by the flow sensor 5 changes; when the outlet water flow rate of the water pump 3 measured by the flow sensor 5 changes, the flow sensor 5 can change the operating frequency of the first frequency converter 2, so that the working state of the compressor unit 1 is changed. The system automatically adjusts the flow of the water pump 3 by detecting the ambient temperature, so that the indoor temperature change is reduced and the adjustment is rapid.
The pressure sensor 6 is arranged on the fan 4 and used for detecting the change of the pressure of the air outlet of the fan 4, so that the change of the wind power of the fan 4 is known. The pressure sensor 6 is connected to the first frequency converter 2, and when the wind force of the fan 4 measured by the pressure sensor 6 changes, the pressure sensor 6 can change the operating frequency of the first frequency converter 2, so as to change the operating state of the compressor unit 1.
The fan 4 is connected with the third frequency converter 8, and the air quantity of the fan 4 can be adjusted directly by changing the operating frequency of the third frequency converter 8. The baffle plate arranged at the air outlet of the fan 4 can be reduced or cancelled. The third frequency converter 8 is connected with the temperature and humidity sensor 9, if the indoor temperature is different from the set temperature, the temperature and humidity sensor 9 not only transmits a signal to the second frequency converter 7, but also transmits a signal to the third frequency converter 8, and then the third frequency converter 8 changes the running speed of the fan 4, so that the pressure of the fan 4 detected by the pressure sensor 6 changes; when the wind speed of the fan 4 measured by the pressure sensor 6 changes, the pressure sensor 6 can change the operating frequency of the first frequency converter 2, so as to change the working state of the compressor unit 1. The system automatically adjusts the wind speed of the fan 4 by detecting the environmental temperature and enables the indoor temperature change to be small by matching with the water pump 3. The power module 11 is connected to the central controller 10 for supplying power.
Therefore, the utility model discloses can reach energy-concerving and environment-protective effect according to indoor temperature humidity control hotel host computer start state and temperature regulation, prolong central air conditioning's life.
Fig. 2 is a schematic circuit diagram of a power module in this embodiment, in fig. 2, the power module 11 includes a voltage input terminal Vin, a first resistor R1, a first capacitor C1, a first diode D1, a second resistor R2, a transformer T, a second capacitor C2, a voltage output terminal Vo, a second diode D2, a fourth resistor R4, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a third resistor R3, a first triode Q1, a third voltage regulator D3, a sixth capacitor C6, and a power supply VCC, wherein the voltage input terminal Vin is connected to one end of the first resistor R1, one end of the first capacitor C1, and one end of a primary winding of the transformer T, the other end of the first resistor R1 and the other end of the first capacitor C1 are both connected to a cathode of the first diode D1, an anode of the first diode 1 and the other end of the primary winding of the transformer T are both connected to one end of the first resistor R2, the other end of the second resistor R2 is connected to ground.
One end of a first secondary coil of the transformer T is respectively connected with the anode of the second capacitor C2 and the voltage output end Vo, the other end of the first secondary coil of the transformer T is connected with the cathode of the second capacitor C2, one end of a second secondary coil of the transformer T is respectively connected with the cathode of the second diode D2 and one end of the fourth resistor R4, the other end of the fourth resistor R4 is respectively connected with the anode of the third capacitor C3, the anode of the fifth capacitor C5, one end of the third resistor R3 and the collector of the first triode Q1, the cathode of the third capacitor C3 is respectively connected with the other end of the second secondary coil of the transformer T and the anode of the fourth capacitor C4, the base of the first triode Q1 is respectively connected with the other end of the third resistor R3 and the cathode of the third triode D3, the emitter of the first triode Q1 is respectively connected with the anode of the sixth capacitor C6 and the anode of the power supply diode VCC 2, and the cathode of the fourth capacitor C4, The anode of the third voltage regulator tube D3 is connected to the cathode of the sixth capacitor C6.
In this embodiment, the fourth resistor R4 is a current limiting resistor for performing current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fourth resistor R4 is located is large, the current of the branch where the fourth resistor R4 is located can be reduced by the fourth resistor R4, so that the branch is kept in a normal operating state, and the components in the circuit are not burned out due to too large current, so that the safety and reliability of the circuit are high. It should be noted that, in the present embodiment, the resistance of the fourth resistor R4 is 43k Ω. Of course, in practical applications, the resistance of the fourth resistor R4 may be adjusted according to specific situations, that is, the resistance of the fourth resistor R4 may be increased or decreased according to specific situations.
When the voltage input end Vin is a fixed value and the voltage of the voltage output end Vo is not changed greatly, the voltage of the fifth capacitor C5 is a voltage formed by forward and backward excitation superposition power supply; when the voltage variation of the voltage output end Vo is large, the second secondary winding of the transformer T, the second diode D2, the fourth resistor R4, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the third resistor R3, the first triode Q1, and the third regulator D3 form an auxiliary power supply circuit, the auxiliary power supply circuit mainly uses forward power supply as a main component, and the forward voltage at this time is: vin × (n2/n0), where n2 is the number of turns in the second secondary winding of transformer T and n0 is the number of turns in the primary winding of transformer T. If the voltage output of the voltage output terminal Vo is not 0, the voltage on the third capacitor C3 is the forward voltage plus the voltage value during flyback. Voltage when the second secondary coil of the transformer T is flyback-output: (Vo + Vd) × (n2/n1), where n1 is the number of turns of the first secondary winding of transformer T, n2 is the number of turns of the second secondary winding of transformer T, Vo is the main supply voltage, and Vd is the diode drop.
Without the second diode D2, the fourth capacitor C4 and the fifth capacitor C5, when the voltage output Vo varies greatly, the second secondary winding of the transformer T has almost no voltage, and it is not guaranteed that the power supply VCC has enough voltage to supply the related control circuit. The power module 11 can solve the problem that the voltage change of the voltage output end Vo cannot be greatly achieved by the power supply VCC, and achieves the purposes of saving cost and simplifying design.
In this embodiment, the first transistor Q1 is an NPN transistor. Of course, in practical application, the first transistor Q1 may also be a PNP transistor, but the structure of the circuit is changed accordingly.
In this embodiment, the power module 11 includes a fourth diode D4, an anode of the fourth diode D4 is connected to an emitter of the first transistor Q1, and a cathode of the fourth diode D4 is connected to the power supply VCC and an anode of the sixth capacitor C6, respectively. The fourth diode D4 is a current limiting diode for current limiting protection of the emitter current of the first transistor Q1. The current limiting protection principle is as follows: when the emitter current of the first triode Q1 is large, the fourth diode D4 can reduce the emitter current of the first triode Q1 to keep the first triode Q1 in a normal operating state, so that the device in the circuit is not burned out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the fourth diode D4 has a model number E-822. Of course, in practical applications, the fourth diode D4 may also be another type of diode with similar functions.
In this embodiment, the power module 11 includes a fifth resistor R5, one end of the fifth resistor R5 is connected to the other end of the second secondary winding of the transformer T, and the other end of the fifth resistor R5 is connected to the cathode of the third capacitor C3 and the anode of the fourth capacitor C4, respectively. The fifth resistor R5 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fifth resistor R5 is located is large, the current of the branch where the fifth resistor R5 is located can be reduced by the fifth resistor R5, so that the branch can be kept in a normal operating state, and the component in the circuit can not be burned out due to the large current, so that the safety and reliability of the circuit can be further enhanced. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 52k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be adjusted according to specific situations, that is, the resistance of the fifth resistor R5 may be increased or decreased according to specific situations.
In a word, the utility model discloses a set up compressor unit 1, first converter 2, water pump 3, fan 4, flow sensor 5, pressure sensor 6, second converter 7, third converter 8, temperature and humidity sensor 9, central controller 10 and power module 11, this hotel's air conditioner host control system can adjust hotel's host computer on state and temperature regulation according to indoor temperature and humidity, reaches energy-concerving and environment-protective effect, extension central air conditioning's life.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A hotel air conditioner host control system is characterized by comprising a compressor unit, a first frequency converter, a water pump, a fan, a flow sensor, a pressure sensor, a second frequency converter, a third frequency converter, a temperature and humidity sensor, a central controller and a power module, wherein the central controller is respectively connected with the first frequency converter, the second frequency converter and the third frequency converter through field buses, the compressor unit is connected with the first frequency converter, the flow sensor is arranged on the water pump, the flow sensor is connected with the first frequency converter, the water pump is connected with the second frequency converter, the second frequency converter is connected with the temperature and humidity sensor, the pressure sensor is arranged on the fan, the pressure sensor is connected with the first frequency converter, the fan is connected with the third frequency converter, and the third frequency converter is connected with the temperature and humidity sensor, the power supply module is connected with the central controller and used for supplying power.
2. The hotel air-conditioner host control system as claimed in claim 1, wherein the power supply module comprises a voltage input terminal, a first resistor, a first capacitor, a first diode, a second resistor, a transformer, a second capacitor, a voltage output terminal, a second diode, a fourth resistor, a third capacitor, a fourth capacitor, a fifth capacitor, a third resistor, a first triode, a third voltage regulator tube, a sixth capacitor and a power supply, the voltage input end is respectively connected with one end of the first resistor, one end of the first capacitor and one end of the primary coil of the transformer, the other end of the first resistor and the other end of the first capacitor are both connected with the cathode of the first diode, the anode of the first diode and the other end of the primary coil of the transformer are both connected with one end of the second resistor, and the other end of the second resistor is grounded;
one end of a first secondary coil of the transformer is respectively connected with the anode of the second capacitor and the voltage output end, the other end of the first secondary coil of the transformer is connected with the cathode of the second capacitor, one end of a second secondary coil of the transformer is respectively connected with the cathode of the second diode and one end of a fourth resistor, the other end of the fourth resistor is respectively connected with the anode of the third capacitor, the anode of a fifth capacitor, one end of a third resistor and the collector of the first triode, the cathode of the third capacitor is respectively connected with the other end of the second secondary coil of the transformer and the anode of the fourth capacitor, the base of the first triode is respectively connected with the other end of the third resistor and the cathode of the third voltage regulator tube, and the emitter of the first triode is respectively connected with the anode of the sixth capacitor and the power supply, and the anode of the second diode is respectively connected with the cathode of the fourth capacitor, the anode of the third voltage regulator tube and the cathode of the sixth capacitor.
3. The hotel air conditioner host control system of claim 2, wherein the fourth resistor has a resistance of 43k Ω.
4. The hotel air conditioner host control system of claim 2, wherein the power module comprises a fourth diode, an anode of the fourth diode is connected to an emitter of the first triode, and a cathode of the fourth diode is connected to the power supply and an anode of a sixth capacitor, respectively.
5. The hotel air conditioner host control system of claim 4, wherein the fourth diode is type E-822.
6. The hotel air conditioner host control system of claim 2, wherein the power module comprises a fifth resistor, one end of the fifth resistor is connected with the other end of the second secondary coil of the transformer, and the other end of the fifth resistor is respectively connected with the cathode of the third capacitor and the anode of the fourth capacitor.
7. The hotel air conditioner host control system of claim 6, wherein the resistance of the fifth resistor is 52k Ω.
8. The hotel air conditioner host control system as claimed in any one of claims 2 to 7, wherein the first transistor is an NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638993.XU CN211233188U (en) | 2019-09-27 | 2019-09-27 | Hotel air conditioner host control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638993.XU CN211233188U (en) | 2019-09-27 | 2019-09-27 | Hotel air conditioner host control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211233188U true CN211233188U (en) | 2020-08-11 |
Family
ID=71936262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921638993.XU Expired - Fee Related CN211233188U (en) | 2019-09-27 | 2019-09-27 | Hotel air conditioner host control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211233188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608493A (en) * | 2019-09-27 | 2019-12-24 | 东莞网田机电工程有限公司 | Hotel air conditioner host control system |
| CN115962527A (en) * | 2023-01-04 | 2023-04-14 | 新疆华奕新能源科技有限公司 | Built-in driving assembly of evaporative cooling air conditioning equipment |
-
2019
- 2019-09-27 CN CN201921638993.XU patent/CN211233188U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608493A (en) * | 2019-09-27 | 2019-12-24 | 东莞网田机电工程有限公司 | Hotel air conditioner host control system |
| CN115962527A (en) * | 2023-01-04 | 2023-04-14 | 新疆华奕新能源科技有限公司 | Built-in driving assembly of evaporative cooling air conditioning equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101256020B (en) | Method and apparatus for controlling central air-conditioning end supply backwater temperature difference | |
| CN211233188U (en) | Hotel air conditioner host control system | |
| CN103388879A (en) | Control method of air conditioner | |
| CN103836766A (en) | Air conditioner indoor unit and automatic static pressure regulating method and device thereof | |
| CN107255347A (en) | A kind of cooler compressor operation power detecting method and air conditioner | |
| CN203132053U (en) | Air conditioner indoor unit and automatic static pressure adjusting device of same | |
| CN101769576A (en) | Total energy-saving environmental base station air-conditioning | |
| CN203258794U (en) | Low-standby-power-consumption air conditioner intelligent control system | |
| CN201160228Y (en) | Commercial power supplementary charging controller of extra-low-power consumption solar energy photovoltaic system | |
| CN103307711A (en) | Air conditioner control system and control method | |
| WO2021073026A1 (en) | Method and device for controlling air conditioner, and computer readable storage medium | |
| CN1213062A (en) | Microcomputer controller for frequency-conversion air-conditioning system | |
| CN110608493A (en) | Hotel air conditioner host control system | |
| CN206609107U (en) | The energy-saving control apparatus of ventilation system of underground park | |
| CN113669879B (en) | Multi-split air conditioner control circuit, electric control device and air conditioner | |
| CN2342295Y (en) | Micro computer controller for variable frequency air conditioner system | |
| CN107120797B (en) | Frequency conversion control system and frequency conversion control method for precise air conditioner fan | |
| CN107642872A (en) | Air conditioner and its control method, control device and computer-readable recording medium | |
| CN211233189U (en) | Main computer room water-cooling air conditioning system | |
| CN212362368U (en) | Precision air conditioner | |
| CN111077866A (en) | Intelligent energy-saving comprehensive energy consumption management system | |
| CN218936597U (en) | Energy-saving automatic control device for three ventilation valves of central air conditioner fresh air system | |
| CN218526655U (en) | Precise air-conditioning energy-saving equipment for data center machine room | |
| CN112815405B (en) | Outer quick-witted control circuit and air conditioning system | |
| CN113795120B (en) | Cabinet air conditioner power supply control method and cabinet air conditioner system |
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: 20200811 Termination date: 20210927 |