CN109855192B - Air conditioner with outer unit regulated and controlled in grading mode - Google Patents
Air conditioner with outer unit regulated and controlled in grading mode Download PDFInfo
- Publication number
- CN109855192B CN109855192B CN201910169210.6A CN201910169210A CN109855192B CN 109855192 B CN109855192 B CN 109855192B CN 201910169210 A CN201910169210 A CN 201910169210A CN 109855192 B CN109855192 B CN 109855192B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- temperature
- outdoor
- water
- units
- 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.)
- Active
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the field of energy conservation of air conditioners, in particular to a heat pump air conditioning unit with a plurality of low-power outdoor units replacing a single high-power outdoor unit, and aims to solve the problem that the power of the air conditioning outdoor unit is difficult to adjust, so that a large amount of electric energy is wasted. The key points of the technical scheme are as follows: the indoor air conditioner comprises an indoor air conditioner body and a plurality of outdoor air conditioner bodies, wherein the indoor air conditioner bodies are arranged indoors, and each indoor air conditioner body comprises a detection circuit for detecting the change speed of the room temperature and a control circuit for controlling the work of each outdoor air conditioner body according to a detection signal of the detection circuit. According to the invention, through the design of the plurality of outdoor units and the control circuit, the working effect of the outdoor unit of the air conditioner can be intelligently adjusted, and the waste of electric energy is reduced.
Description
Technical Field
The invention relates to the field of air conditioning energy conservation, in particular to a heat pump air conditioning unit with a plurality of low-power outdoor units replacing a single high-power outdoor unit.
Background
At present, an air conditioner is a daily household appliance, an outdoor unit of the air conditioner is also called a host, and the air conditioner comprises four main components for cooling or heating: a compressor, an evaporator, a condenser, an expansion valve, or a capillary tube. The compressor in the outdoor unit is the heart of the air conditioner, and the air conditioner mainly realizes heat exchange by compressing a refrigerant into high-temperature and high-pressure gas through the compressor.
However, after the air conditioner external unit is manufactured, most of refrigerating power is a rated value, and the air conditioner external unit is refrigerated by using the same power when refrigeration and temperature maintenance are needed, so that the air conditioner external unit is switched on and off when the temperature is maintained after temperature reduction is finished, and electric energy is wasted greatly.
And a small part of air conditioner external units use a compressor frequency conversion technology, so that the power of the air conditioner external units can be changed, and the aim of saving energy is fulfilled. However, such an air conditioner outdoor unit is expensive, and the energy efficiency ratio of the outdoor unit is often low for the purpose of achieving frequency conversion, and although the energy saving effect is achieved, the effect is not ideal.
Therefore, a new scheme is provided to solve the problem of energy conservation, and based on the prior art of the air conditioner outdoor unit, the energy consumption is further reduced through the outdoor unit grading regulation and control technology.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the air conditioner with the outer unit regulated and controlled in a grading manner, so that the working effect of the outer unit of the air conditioner can be intelligently regulated and the waste of electric energy is reduced through the design of a plurality of outer units and a control circuit.
The technical purpose of the invention is realized by the following technical scheme: the air conditioner comprises an indoor air conditioner and a plurality of outdoor air conditioner units, wherein the indoor air conditioner units are arranged indoors, the outdoor air conditioner units are arranged outdoors, each indoor air conditioner unit comprises a detection circuit for detecting the change speed of the room temperature and a control circuit for controlling the work of the outdoor air conditioner units according to detection signals of the detection circuits.
When the temperature is controlled, all the outdoor units can be started firstly, the temperature is reduced continuously at the moment, the temperature reduction speed can be detected through the detection circuit, the required outdoor units are closed step by step, a user feels comfortable, all the outdoor units can also be started still, the outdoor units are closed in sequence until the temperature reaches the temperature set by the user, and the refrigerating capacity of the residual outdoor units is enough to maintain the required temperature.
The invention is further configured to: the power of the air conditioner outdoor units is different.
If the power of the outdoor units is the same, the cooling speed provided by the air conditioner is a multiple of that of a single outdoor unit, and if the power of the outdoor units is different, the cooling speed provided by the air conditioner can be adjusted more flexibly in a random combination or single use mode.
The invention is further configured to: the control circuit comprises a receiving module for receiving the detection circuit signal and a control module for controlling a plurality of outdoor units to work, wherein the control module is coupled with the outdoor units, and the outdoor units are controlled independently.
When the control is carried out, if the outdoor units can be combined together to work together and can also work independently, the outdoor units are required to be connected in parallel, and each outdoor unit is controlled independently.
The invention is further configured to: a waterway is connected between the outer machine and the inner machine and comprises a main water pipe connected with the inner machine, a water diversion pipe connected with the main water pipe, and a plurality of outer machines which are respectively connected with different water outlets of the water diversion pipe.
The air conditioner carries out cold and hot exchange through the water route, because outer machine is provided with a plurality ofly, so need with water pipe and outer machine one-to-one, just can normally use, so set up the distributive pipe on the water route to outer machine and the connection of water pipe make the water route can normally work.
The invention is further configured to: the number of the water outlets on the water distribution pipe corresponds to that of the external units one by one, the size of the water outlets is matched with the cooling power of the external units, and each water outlet is provided with an electromagnetic valve.
When the water distribution pipe is used, the water flow rate which can be cooled by different external units is different due to the fact that different powers of the external units are different, and therefore the size of the water outlet needs to correspond to the cooling power of the external units, and the external units can achieve the required effect.
The invention is further configured to: the cross section of the water distribution pipe is circular, the water inlet of the water distribution pipe projects to the circle center of the water distribution pipe, the water outlet of the water distribution pipe projects to the circumference of the water distribution pipe, and the distances between the water outlets and the water inlets are the same.
In order to further make each outer machine obtain make full use of, with the water inlet of distributive pipe and a plurality of delivery port equidistant setting to avoid rivers to reach the consequence of anticipated reposition of redundant personnel effect.
The invention is further configured to: the detection circuit comprises a temperature sensor for detecting the indoor temperature, a timing module for receiving readings of the temperature sensor at regular time, a central module for receiving temperature information and calculating temperature change values, and a storage module for storing the temperature change values required by a user, wherein the central module is coupled with the storage module, and a plurality of stages of temperature change values are preset in the storage module.
When the air conditioner use, different users often have different temperature requirements, for example someone likes lower temperature, someone likes higher temperature, someone dislikes the temperature variation too fast to the temperature is sensitive, someone wants rapid cooling to reach anticipated effect, simultaneously, even same user, around the motion, around the sleep, often also have different temperature requirements, consequently in this patent, the user not only can be like normal air conditioner, through remote controller or air conditioner panel manual control temperature, can also set up temperature variation speed through the remote controller, adjust according to individual demand.
The invention is further configured to: the storage module is also provided with a plurality of blank storage units.
When the temperature control device is used by a user, different temperature control modes can be set according to different requirements of the user, such as a motion mode with fast temperature reduction and lower temperature; a health mode with slow cooling and higher temperature; the temperature reduction speed is moderate, the temperature is low, the sleep mode is adopted, the corresponding information can be recorded into the blank storage unit of the storage module through the control of the central module, and the corresponding information can be directly read like the preset temperature change value when the storage module is used.
The invention is further configured to: the optimal energy efficiency ratio temperature intervals of the air conditioner external units are different.
When each air conditioner outdoor unit is arranged, an optimal energy efficiency ratio interval is formed, the interval is determined by factors such as the compression ratio of a compressor, the selection of a refrigerant and the like, and most of the interval is difficult to change after the air conditioner outdoor unit is manufactured; the compressor frequency conversion technology is used by a small number of air conditioner external units, so that the power of the air conditioner external units can be changed to achieve the purpose of energy saving, but the air conditioner external units are expensive, the energy efficiency ratio of the external units is often low for achieving the purpose of frequency conversion, although the energy saving effect is achieved, the effect is not ideal, therefore, the high energy efficiency ratio temperature sections of a plurality of external units are different, and the energy saving effect can be achieved only by using the corresponding external units when the temperature is maintained.
The invention is further configured to: each air conditioner outdoor unit comprises a plurality of compressors for compressing refrigerants, and the compression ratios of the compressors are different.
The air conditioner external unit comprises a compressor, an evaporator, a condenser, an expansion valve or a capillary tube and the like, and through the design of a plurality of compressors, when the air conditioner external unit performs temperature control processing according to required temperature, the compressors can be selectively selected according to specific temperature values, so that the refrigerating capacity in unit time can be more accurately adjusted through the change of compression ratios of different compressors, and a better energy-saving effect is achieved.
In conclusion, the invention has the following beneficial effects:
firstly, through the design of a plurality of outdoor units and a control circuit, the working effect of the outdoor unit of the air conditioner can be intelligently adjusted, and the waste of electric energy is reduced;
secondly, by the design of the water distribution pipe, all the external units are fully utilized, and the effect of saving electric energy is further achieved;
thirdly, a plurality of low-power compressors replace a single high-power compressor, so that the effect of saving electric energy is further achieved.
Drawings
FIG. 1 is a schematic circuit flow diagram of the first embodiment;
fig. 2 is a schematic structural view of the knock out pipe.
In the figure: 1. an outdoor unit; 2. a detection circuit; 21. a temperature sensor; 22. a central module; 23. a storage module; 3. a control circuit; 31. a control module; 4. a water diversion pipe; 41. a water inlet; 42. and (7) a water outlet.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The first embodiment is as follows: an air conditioner with an outdoor unit regulated in a grading manner is shown in fig. 1 and comprises an indoor unit arranged indoors and three outdoor units 1 arranged outdoors and having different powers, wherein the indoor unit comprises a detection circuit 2 for detecting the change speed of the room temperature and a control circuit 3 for controlling the outdoor unit 1 to work according to a detection signal of the detection circuit 2.
When carrying out temperature control, to the cooling for example, at first can pass through the cooling stage, a plurality of outer machine 1 simultaneous working this moment, cool down to indoor, when reaching the temperature value that the user set for, trun to and use single outer machine 1 or two outer machine 1 combination work to not only reach the effect of maintaining the temperature through the refrigerating output of single outer machine 1, noise that can also greatly reduced maintenance temperature stage sent.
The power of the three outdoor units 1 is 1, 2 and 3 respectively, and the refrigeration efficiency is adjusted through various combinations of the three outdoor units 1 so as to achieve the purpose of maintaining the temperature sufficiently. In actual use, the number of the outer units 1 can be adjusted according to installation conditions, so that the refrigeration efficiency can be adjusted more flexibly.
When the air conditioner is used, different users often have different temperature requirements, for example, people like lower temperature, people like higher temperature, people are sensitive to temperature and dislike too fast temperature change, and people hope that the temperature is quickly reduced to reach the expected effect. Therefore, in this patent, the detection circuit 2 includes not only a portion for detecting temperature in the conventional air conditioner, but also a portion for presetting temperature variation.
Specifically, the detection circuit 2 includes a temperature sensor 21 for detecting the indoor temperature, a timing module for receiving readings of the temperature sensor 21 at a fixed time, a central module 22 for receiving temperature information and calculating a temperature change value, a storage module 23 for storing a temperature change value required by a user, and a communication module coupled to the central module 22. Wherein the central module 22 is coupled to the storage module 23, and the storage module 23 is preset with a plurality of temperature variation values; the communication module is used for receiving remote control signals of the remote controller, so that corresponding preset information is read from the storage module 23, a user can manually control the temperature through the remote controller or an air conditioner panel like a normal air conditioner, and the temperature change speed can be controlled through an adding button and a subtracting button of the remote controller.
When the central module 22 works, firstly, under the control of the timing module, receiving a temperature signal at intervals, and processing the temperature signal to obtain the temperature change speed;
at this time, the central module 22 inputs the temperature change information into the storage module 23, compares the temperature change information with a preset temperature change speed set by the storage module 23, and stops the operation of the external unit 1 with the power of 1 p if the temperature change speed is too high;
if the temperature change is still too large, stopping the 2-piece outdoor unit 1 and starting the 1-piece outdoor unit 1, and so on until the power of the closed outdoor unit 1 meets the requirement.
When the temperature control device is used by a user, different temperature control modes can be set according to different requirements of the user, such as a motion mode with fast temperature reduction and lower temperature; a health mode with slow cooling and higher temperature; moderate cooling speed, low temperature sleep mode, etc., for which the storage module 23 is further provided with a plurality of blank storage units. The values related to the personal preference can be controlled by the central module 22 to record the corresponding information of the cooling speed and the temperature of the air conditioner in use at that time into the blank storage unit of the storage module 23, and can be directly read as the preset temperature change values in the subsequent use of the user.
The control circuit 3 comprises a receiving module for receiving signals of the detection circuit 2 and a control module 31 for controlling the plurality of outdoor units 1 to work, wherein the control module 31 is respectively coupled with the three outdoor units 1, and the outdoor units 1 are independently controlled every day, so that various combinations of the outdoor units 1 are operated.
When the control circuit 3 works, all the outdoor units 1 can be started firstly, the temperature is reduced continuously at the moment, and the detection circuit 2 detects the temperature reduction speed, so that the required outdoor units 1 are closed step by step, and a user feels comfortable. Or all the outdoor units 1 can still be started until the temperature reaches the temperature set by the user, and then the outdoor units 1 are sequentially closed, so that the refrigerating capacity of the remaining outdoor units 1 is enough to maintain the required temperature.
As shown in fig. 1 and 2, since the air conditioner exchanges heat and cold through a water path, a water path is connected between the outer unit 1 and the inner unit. Because the outer units 1 are provided with a plurality of water pipes, the water pipes are required to be in one-to-one correspondence with the outer units 1 to be normally used, and the waterway comprises a main water pipe connected to the inner unit, a diversion pipe 4 connected to the main water pipe, and three outer units 1 which are respectively connected to different water outlets 42 of the diversion pipe 4. The cross section of the water distribution pipe 4 is circular, the water inlet 41 of the water distribution pipe 4 projects to the circle center of the water distribution pipe 4, the water outlet 42 of the water distribution pipe 4 projects to the circumference of the water distribution pipe 4, and the distances between the water outlets 42 and the water inlet 41 are the same, so that the consequence that water flow does not reach the expected distribution effect is avoided.
Meanwhile, when the water distribution pipe 4 is used, the different powers of the different external units 1 need to be considered, and the water amount which can be cooled by the different external units 1 is also different. Therefore, the size of the water outlet 42 needs to be matched with the cooling power of the outdoor unit 1, so that the cooling effect of the outdoor unit 1 is fully exerted, the power of the outdoor unit 1 is 1, 2 and 3, and the diameter ratios of the three water outlets 42 are 1: 1.414: 1.732. in order to operate the water outlets 42 simultaneously with the outdoor unit 1, a solenoid valve is provided at each water outlet 42.
The working process is as follows: when the air conditioner is turned on, all the external units 1 work simultaneously under the control of the control circuit 3;
then the detection circuit 2 works, the central module 22 receives the temperature signal of the temperature sensor 21 once every other interval time under the control of the timing module, and processes the temperature signal to obtain the temperature change speed;
at this time, the central module 22 inputs the temperature change information into the storage module 23, compares the temperature change information with a preset temperature change speed set by the storage module 23, and transmits a corresponding signal to the control circuit 3 to stop the operation of the outdoor unit 1 with the power of 1 p if the temperature change speed is too high;
if the temperature change is still too large, the corresponding signal is transmitted to the control circuit 3, the 2-piece outdoor unit 1 with power is stopped, the 1-piece outdoor unit 1 with power is started, and the like is repeated, and the adjustment is carried out by taking the piece as a unit until the power of the closed outdoor unit 1 meets the requirement.
In a second embodiment, as shown in fig. 1, an air conditioner with an outdoor unit controlled in stages is different from the first embodiment in that: the optimum energy efficiency ratio temperature intervals of the three air-conditioning outdoor units 1 are different from each other, and there are overlapping intervals. The optimal refrigeration energy efficiency intervals of the three outdoor units 1 are respectively 10-30 degrees, 15-35 degrees and 20-40 degrees, the optimal heating energy efficiency intervals are respectively-25-10 degrees, -15-20 degrees and-5-30 degrees, in the temperature maintenance stage after temperature rising and cooling, the corresponding outdoor unit 1 can be directly selected to work through the maintenance temperature preset by a user, and if the power of a single outdoor unit 1 is insufficient, two outdoor units 1 or even three outdoor units 1 in the overlapping area work together.
In a third embodiment, as shown in fig. 1, an air conditioner with an outdoor unit controlled in stages is different from the first embodiment in that: in order to facilitate purchasing and manufacturing, a plurality of water outlets of the water distribution pipe are all arranged to be matched with the external machine with the largest power, so that the purpose of adjusting the temperature can be achieved, and the water quantity requirement can be met.
In a fourth embodiment, as shown in fig. 1, an air conditioner with an outdoor unit controlled in stages is different from the first embodiment in that: each of the outdoor units 1 includes a plurality of compressors for compressing a refrigerant, and compression ratios of the plurality of compressors are different from each other.
The outdoor unit 1 includes a compressor, an evaporator, a condenser, an expansion valve or a capillary tube, etc., wherein the cooling capacity is greatly affected by the compressor, and more particularly, by the compression ratio of different compressors. Through the design of many compressors for the outer machine 1 of air conditioner is in the temperature maintenance stage, when carrying out the accuse temperature according to required temperature and handling, can select corresponding compressor according to specific temperature numerical value, thereby through this compression ratio, more accurate adjusts the refrigerating output of unit interval, reaches better energy-conserving effect.
When a plurality of compressors are connected, the plurality of compressors can be connected in sequence, and the corresponding compressors can be started when the compressor works; or a plurality of compressors can be connected in parallel, all the compressors are in a closed state at the moment, and only the compressor corresponding to the temperature works.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples and temperature ranges, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. The utility model provides an air conditioner of outer quick-witted hierarchical regulation and control which characterized in that: the indoor air conditioner comprises an indoor air conditioner and a plurality of outdoor air conditioner (1) arranged outdoors, wherein the indoor air conditioner comprises a detection circuit (2) for detecting the change speed of the room temperature and a control circuit (3) for controlling the outdoor air conditioner (1) to work according to a detection signal of the detection circuit (2); the power of the air conditioner outdoor units (1) is different; a waterway is connected between the external unit (1) and the internal unit, and comprises a main water pipe connected with the internal unit, a water diversion pipe (4) connected with the main water pipe, and a plurality of external units (1) which are respectively connected with different water outlets (42) of the water diversion pipe (4); the section of the water distribution pipe (4) is circular, a water inlet (41) of the water distribution pipe (4) projects to the circle center of the water distribution pipe (4), a water outlet (42) of the water distribution pipe (4) projects to the circumference of the water distribution pipe (4), and the distances between the water outlets (42) and the water inlets (41) are the same; the detection circuit (2) comprises a temperature sensor (21) for detecting the indoor temperature, a timing module for regularly receiving the reading of the temperature sensor (21), a central module (22) for receiving temperature information and calculating a temperature change value, a storage module (23) for storing the temperature change value required by a user, and a communication module coupled with the central module (22), wherein the central module (22) is coupled with the storage module (23), and a plurality of stages of temperature change values are preset in the storage module (23); the storage module (23) is also provided with a plurality of blank storage units.
2. The air conditioner with the outdoor unit regulated in stages as claimed in claim 1, wherein: the control circuit (3) comprises a receiving module for receiving signals of the detection circuit (2) and a control module (31) for controlling the work of the plurality of outdoor units (1), wherein the control module (31) is coupled with the outdoor units (1), and the plurality of outdoor units (1) are controlled independently.
3. The air conditioner with the outdoor unit regulated in stages as claimed in claim 1, wherein: the number of the water outlets (42) on the water distribution pipe (4) corresponds to that of the outdoor unit (1) one by one, the size of each water outlet (42) is matched with the cooling power of the outdoor unit (1), and each water outlet (42) is provided with an electromagnetic valve.
4. The air conditioner with the outdoor unit regulated in stages as claimed in claim 1, wherein: the optimal energy efficiency ratio temperature intervals of the air conditioner external units (1) are different.
5. The air conditioner with the outdoor unit regulated in stages as claimed in claim 1, wherein: each air conditioner external unit (1) comprises a plurality of compressors for compressing refrigerants, and the compression ratios of the compressors are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169210.6A CN109855192B (en) | 2019-03-06 | 2019-03-06 | Air conditioner with outer unit regulated and controlled in grading mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169210.6A CN109855192B (en) | 2019-03-06 | 2019-03-06 | Air conditioner with outer unit regulated and controlled in grading mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109855192A CN109855192A (en) | 2019-06-07 |
| CN109855192B true CN109855192B (en) | 2021-05-25 |
Family
ID=66899975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910169210.6A Active CN109855192B (en) | 2019-03-06 | 2019-03-06 | Air conditioner with outer unit regulated and controlled in grading mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109855192B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2665578Y (en) * | 2003-11-08 | 2004-12-22 | 海尔集团公司 | Frequency conversion air conditioner including combined outdoor unit |
| CN105423500A (en) * | 2015-12-28 | 2016-03-23 | 芜湖美智空调设备有限公司 | Control method of air conditioner, control system of air conditioner and air conditioner |
| CN107514784A (en) * | 2017-08-31 | 2017-12-26 | 广东美的制冷设备有限公司 | Fixed speed air conditioner and its control method, computer-readable recording medium |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628968Y (en) * | 2003-04-02 | 2004-07-28 | 海尔集团公司 | Multicompressor variable capacity variable frequency one with one air conditioner |
| JP4316933B2 (en) * | 2003-06-03 | 2009-08-19 | 東芝キヤリア株式会社 | Air conditioner |
| KR20090048978A (en) * | 2007-11-12 | 2009-05-15 | 삼성전자주식회사 | Multi type air conditioner and control method thereof |
| CN104515211A (en) * | 2013-09-26 | 2015-04-15 | 珠海格力电器股份有限公司 | Water knockout drum and have its air conditioner |
| JP6215084B2 (en) * | 2014-02-25 | 2017-10-18 | 三菱重工サーマルシステムズ株式会社 | Air conditioning system |
| CN105588271B (en) * | 2015-09-16 | 2018-03-09 | 青岛海信日立空调系统有限公司 | Multi-compressor control method and device in a kind of multi-connected air conditioning system |
| JP6479205B2 (en) * | 2015-10-26 | 2019-03-06 | 三菱電機株式会社 | Air conditioning system |
| CN108224624B (en) * | 2017-12-18 | 2020-08-18 | 青岛海尔空调电子有限公司 | Control method and device for water chiller system |
| CN109163427B (en) * | 2018-08-14 | 2020-09-25 | 广东美的暖通设备有限公司 | Control method and control device of multi-split system and multi-split system |
-
2019
- 2019-03-06 CN CN201910169210.6A patent/CN109855192B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2665578Y (en) * | 2003-11-08 | 2004-12-22 | 海尔集团公司 | Frequency conversion air conditioner including combined outdoor unit |
| CN105423500A (en) * | 2015-12-28 | 2016-03-23 | 芜湖美智空调设备有限公司 | Control method of air conditioner, control system of air conditioner and air conditioner |
| CN107514784A (en) * | 2017-08-31 | 2017-12-26 | 广东美的制冷设备有限公司 | Fixed speed air conditioner and its control method, computer-readable recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109855192A (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114440410B (en) | Variable flow control method for freezing and cooling water pump based on heat exchange efficiency | |
| CN102865646B (en) | Air-conditioning apparatus | |
| CN202361545U (en) | Frequency conversion and fixed frequency combined-type air conditioner and refrigerator all-in-one machine with human body infrared induction function | |
| CN207335020U (en) | A kind of thermostatted water air-conditioning of intelligent control | |
| CN105509411A (en) | Refrigerator control method system and refrigerator | |
| CN110779233A (en) | Air source heat pump air conditioner floor heating hot water unit | |
| US20050257539A1 (en) | Air conditioner and method for controlling operation thereof | |
| CN101769576A (en) | Total energy-saving environmental base station air-conditioning | |
| CN105805825B (en) | A kind of air-conditioning and its control method | |
| CN212720195U (en) | Cooling water system control device based on system overall energy efficiency ratio COP is best | |
| EP4354048A1 (en) | Heat pump system and control method therefor | |
| CN112066497A (en) | Integrated indoor unit heat pump air conditioning system and control method thereof | |
| CN104613667A (en) | Combined air-conditioning system as well as control method thereof | |
| CN109855192B (en) | Air conditioner with outer unit regulated and controlled in grading mode | |
| CN207095020U (en) | Carbon dioxide combined heat pump hot water and handpiece Water Chilling Units | |
| CN213396005U (en) | Cold and hot governing system suitable for single air source heat pump set | |
| CN211177489U (en) | Air source heat pump air conditioner floor heating hot water unit | |
| CN110578695B (en) | Household water machine water flow control method | |
| CN212930316U (en) | Modular integrated water chilling unit | |
| CN211575231U (en) | Frequency conversion multiplex working medium direct expansion floor heating system | |
| TWI691651B (en) | Screw compression system with real-time variable built-in volume ratio and method of operating the same | |
| CN201569215U (en) | Energy-saving thermal equilibrium water-cooling type refrigeration heat recovery control device | |
| CN113803773A (en) | Double-source multi-connection heating and ventilation system and control method thereof | |
| CN111473542A (en) | Cold and heat adjusting system and method suitable for single air source heat pump unit | |
| CN215723793U (en) | Supply return water difference in temperature adjustment structure and heating and ventilation air conditioning system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |