CN101487612A - Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit - Google Patents
Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit Download PDFInfo
- Publication number
- CN101487612A CN101487612A CNA2009100069468A CN200910006946A CN101487612A CN 101487612 A CN101487612 A CN 101487612A CN A2009100069468 A CNA2009100069468 A CN A2009100069468A CN 200910006946 A CN200910006946 A CN 200910006946A CN 101487612 A CN101487612 A CN 101487612A
- Authority
- CN
- China
- Prior art keywords
- temperature
- heat exchanger
- clock
- average water
- scope
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling the flow rate of freezing medium in a fixed-frequency ice accumulating air-conditioning unit and a device thereof. The method comprises: at least more than one temperature sensors are distributed in an ice accumulating groove along the horizontal direction and along the depth direction, and at least one in heat exchange pipes of a heat exchanger in the ice accumulating groove is provided with the temperature sensors; the temperature value in the ice accumulating groove is acquired within the preset time, the average water temperature is calculated, and the temperature at an outlet of the heat exchanger and the average temperature at the middle part of a heat exchange pipe are acquired; when the average water temperature is judged to be within the preset range of regulating the opening of a throttle valve, the difference value between the temperature at the outlet of the heat exchanger and the average temperature at the middle part of the heat exchange pipe is judged, and the opening of the throttle valve is regulated according to the preset method. The invention can accurately measure the temperature, avoid liquid accumulating in an evaporator, enlarge the heat exchange area and improve the cold accumulation COP.
Description
Technical field
The present invention relates to the refrigeration control of air-conditioning unit, be meant a kind of method for controlling flow of refrigerant and device of fixed-frequency ice-accumulation air-conditioning unit especially.
Background technology
In process of refrigerastion, for the nonadjustable ice cold-storage of compressor frequency refrigeration unit, its whole ice-reserving process is a unsteady-state heat transfer process, and heat-transfer capability requires the refrigerant flow of refrigeration system also will change from large to small thereupon.Generally advance the aperture of control choke valve in the degree of superheat of evaporator outlet, thereby realize the control of refrigerant flow by detecting cold-producing medium.There is following drawback in this method: when sensible heat section cold-storage, because water temperature is higher, the heat exchange amount is bigger, and suction superheat is bigger, and at this time expansion valve can leave to very big.But because the cool-storage time of sensible heat section accounts for total cold-storage cycle less than 1/8 time, when entering latent heat section cold-storage, suction superheat can sharply reduce along with the decline of water temperature, and the aperture of expansion valve should turn down thereupon.The inhomogeneities of in real process, evaporating owing to cold-producing medium, when the part cold-producing medium reaches capacity state, it is 0 that the temperature-sensitive bag can be judged the degree of superheat by accident, at this time the aperture of expansion valve is no longer regulated, and causes cold-producing medium at evaporimeter rear portion hydrops, and the evaporation and heat-exchange area reduces, heat exchange worsens, ice-reserving speed descends, and the cold-storage required time increases, and required power consumption increases.
Summary of the invention
In view of this, the invention reside in method for controlling flow of refrigerant and device that a kind of fixed-frequency ice-accumulation air-conditioning unit is provided, when reaching capacity state to solve above-mentioned because cold-producing medium, the temperature-sensitive bag can be judged by accident and be caused cold-producing medium at evaporimeter rear portion hydrops, the evaporation and heat-exchange area reduces, the cold-storage required time increases, the problem that required power consumption increases.
For addressing the above problem, the invention provides a kind of method for controlling flow of refrigerant of fixed-frequency ice-accumulation air-conditioning unit, comprising:
Arrange at least more than one temperature sensor on the horizontal direction in Ice Storage Tank, arrange at least more than one temperature sensor on the depth direction in Ice Storage Tank, on each road heat exchanger tube of heat exchanger in Ice Storage Tank, mounting temperature sensor on No. one heat exchanger tube at least;
The temperature value union that obtains in the given time in the Ice Storage Tank goes out average water temperature, and obtain the outlet temperature of heat exchanger exit and the mean temperature on the heat exchanger tube, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, judge the outlet temperature of heat exchanger exit and the difference between the mean temperature on the heat exchanger tube, adjust the corresponding aperture of choke valve according to preordering method.
Preferably, the described outlet temperature of obtaining heat exchanger exit comprises:
Obtain the temperature of temperature sensor on the general export of heat exchanger, or obtain temperature, calculate the outlet temperature of arithmetic average at the outlet temperature sensor that converges each road heat exchanger tube of porch of general export.
Preferably, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, reach the outlet temperature of judgement heat exchanger exit and the difference between the mean temperature on the heat exchanger tube, the process of adjusting the aperture of choke valve according to preordering method comprises:
When the scope of differentiating average water temperature T 0 is T0〉20, choke valve does not adjust
When the scope of differentiating average water temperature T 0 is 15≤T0＜20, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜3 o'clock;
When the scope of differentiating average water temperature T 0 is 10≤T0＜15, satisfy T1-T2 〉=2 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜2 o'clock;
When the scope of differentiating average water temperature T 0 is 7.5≤T0＜10, satisfy T1-T2 〉=0.5 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜0.5 o'clock;
When the scope of differentiating average water temperature T 0 is 5≤T0＜7.5, satisfy T1-T2 〉=1 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜1 o'clock;
When the scope of differentiating average water temperature T 0 is 2.5≤T0＜5, satisfy T1-T2 〉=0 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜0 o'clock;
When the scope of differentiating average water temperature T 0 is T0＜2.5, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜3 o'clock.
The present invention also provides a kind of refrigerant flow control device of fixed-frequency ice-accumulation air-conditioning unit, arranges at least more than one temperature sensor on the horizontal direction in Ice Storage Tank, in Ice Storage Tank depth direction on arrange at least more than one temperature sensor;
On each road heat exchanger tube of heat exchanger in Ice Storage Tank, mounting temperature sensor on No. one heat exchanger tube at least;
Distinguish mounting temperature sensor at the general export mounting temperature sensor of heat exchanger or in the exit of each road heat exchanger tube of converging before the inlet of general export;
Described each temperature sensor connects the data acquisition unit that temperature signal is converted to data signal, and described data acquisition unit connects the single-chip microcomputer of handling described data signal;
The temperature value union that described single-chip microcomputer obtains in the Ice Storage Tank in the given time goes out average water temperature, and obtain the outlet temperature of heat exchanger exit and the mean temperature on the heat exchanger tube, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, judge the outlet temperature of heat exchanger exit and the difference between the mean temperature on the heat exchanger tube, adjust the corresponding aperture of choke valve according to preordering method.
Preferably, described Ice Storage Tank is cylindrical or polygon.。
Preferably, described single-chip microcomputer is judged average water temperature in the scope of predetermined adjustment throttle valve opening, and judge the outlet temperature of heat exchanger exit and the difference between the mean temperature on the heat exchanger tube, the process of adjusting the corresponding aperture of choke valve according to preordering method comprises:
When the scope of differentiating average water temperature T 0 is T0〉20, choke valve does not adjust
When the scope of differentiating average water temperature T 0 is 15≤T0＜20, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜3 o'clock;
When the scope of differentiating average water temperature T 0 is 10≤T0＜15, satisfy T1-T2 〉=2 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜2 o'clock;
When the scope of differentiating average water temperature T 0 is 7.5≤T0＜10, satisfy T1-T2 〉=0.5 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜0.5 o'clock;
When the scope of differentiating average water temperature T 0 is 5≤T0＜7.5, satisfy T1-T2 〉=1 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜1 o'clock;
When the scope of differentiating average water temperature T 0 is 2.5≤T0＜5, satisfy T1-T2 〉=0 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜0 o'clock;
When the scope of differentiating average water temperature T 0 is T0＜2.5, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜3 o'clock.
Method of the present invention and to install measurable temperature accurate, avoid judging by accident and cause the phenomenon of cold-producing medium at evaporimeter rear portion hydrops, improved the evaporation and heat-exchange area, reduced the cold-storage required time, reduced power consumption, refrigeration system is regulated more steady, and cold-storage COP is greatly improved, control method is simple, reliable, implements easily.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention;
Fig. 2 is the structure chart of the embodiment of the invention.
The specific embodiment
For clearly demonstrating the present invention, provide preferred embodiment below and be described with reference to the accompanying drawings.
Referring to Fig. 1, Fig. 2, arrange at least more than one temperature sensor on the horizontal direction of method of the present invention in Ice Storage Tank 13, as temperature sensor 16, temperature sensor 17 or temperature sensor 18; Arrange at least more than one temperature sensor on the depth direction in Ice Storage Tank, as temperature sensor 181 or temperature sensor 182 at temperature sensor 18 same depth directions; On each road heat exchanger tube of heat exchanger 14 in Ice Storage Tank 13, mounting temperature sensor 15 on No. one heat exchanger tube at least; The temperature sensor of on the general export 12 of heat exchanger 14, installing 19, general export 12 is the inlet that converges of N road heat exchanger tube, except on general export 12, arranging the temperature sensor 19, also can each heat exchanger tube outlet before converging inlet arrange that respectively temperature sensor, the profile of Ice Storage Tank 13 can be polygon or circle etc.
Each temperature sensor connects data acquisition unit, and data acquisition unit connects the single-chip microcomputer that is used to control throttle valve opening.
Step 101: the temperature value union that obtains in the given time in the Ice Storage Tank goes out average water temperature.
Single-chip microcomputer constantly receives the temperature signal that data acquisition unit obtains, and obtains the signal of each temperature sensor 15 on the signal, heat exchanger 14 of each temperature sensor in the Ice Storage Tank 13 and the signal of heat exchanger general export 12 temperature sensors respectively.
During average water temperature T 0 in the computing Ice Storage Tank 13, obtain the temperature value of each temperature sensor on the horizontal direction in the Ice Storage Tank earlier, calculate the mean value of water temperature on each horizontal plane, again the mean value of each different depth is done sums on average again, obtain average temperature value T0.
Step 102: obtain the mean temperature on heat exchanger outlet temperature and the heat exchanger tube in the scheduled time identical with step 101.
Obtain temperature signal by the temperature sensor on each heat exchanging pipe in the Ice Storage Tank 15, calculate the middle part temperature T 2 of heat exchanger 14; Obtain outlet temperature T1 by temperature sensor 19 on the general export 12, certainly, this temperature value T1 also can be by obtaining the temperature of converging the outlet temperature sensor of each heat exchanger tube before the inlet that is installed in general export 12, and obtain arithmetic mean of instantaneous value as T1.
Step 103: judge average water temperature in needs are adjusted the scope of throttle valve opening, judge the difference between the mean temperature on heat exchanger outlet temperature and the heat exchanger tube, adjust the aperture of choke valve according to described difference.
In whole ice-reserving process, equitable subsection is carried out in variation to water temperature, default some (being no less than 3) individual water temperature predetermined value, as be respectively A, B, C......, water temperature is low more, the interval of water temperature predetermined value is more little, and sets corresponding valve opening action criterion under these temperature sections, as T01=3, T02=2, T03=1......
Configure the standby aperture of choke valve before the start, when average water temperature during greater than predetermined temperature, need not adjust throttle valve opening, only in the predetermined temperature interval, just might adjust throttle valve opening, adjusting range is as shown in table 1.
The difference DELTA t of middle part mean temperature T2 in the temperature T 1 that heat collecting exchanger house steward exports the temperature sensor 19 on 12 and the Ice Storage Tank, and compare with the valve opening action criterion T01 of this period, as Δ t＜T
01Then choke valve turns down the default aperture of choke valve, as, adjusting-5P promptly turns down 5P; Otherwise do not adjust.
The Measuring Time of this device is 5s, and adjustment cycle is 2 minutes, in like manner, the process of other water temperature section is carried out same flow-control.
When being higher than A (A is the numerical value 20 in the table) when average water temperature T 0, choke valve is failure to actuate, and keeps maximum opening;
As when the scope of average water temperature T 0 in B≤T0＜A or T0＜during C, the difference DELTA t between T1 and the T2 relatively, and judge the aperture of regulating choke valve according to following table 1,
Table 1
The present invention also provides a kind of refrigerant flow control device of fixed-frequency ice-accumulation air-conditioning unit, referring to Fig. 2, arrange at least more than one temperature sensor on the horizontal direction in Ice Storage Tank 13, arrange at least more than one temperature sensor on the depth direction in Ice Storage Tank;
On each road heat exchanger tube of heat exchanger 14 in Ice Storage Tank 13, mounting temperature sensor 15 on No. one heat exchanger tube at least;
Distinguish mounting temperature sensor at general export 12 mounting temperature sensors 19 of heat exchanger 14 or in the exit of each road heat exchanger tube of converging before the inlet of general export 12;
Described each temperature sensor connects the data acquisition unit that temperature signal is converted to data signal, and described data acquisition unit connects the single-chip microcomputer of handling described data signal;
The temperature value union that described single-chip microcomputer obtains in the Ice Storage Tank in the given time goes out average water temperature and obtains the outlet temperature of heat exchanger general export 12 and the mean temperature on the heat exchanger tube, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, judge the outlet temperature of heat exchanger general export 12 and the difference between the mean temperature on the heat exchanger tube, adjust the corresponding aperture of choke valve according to preordering method.
Preferably, the profile of described Ice Storage Tank is circle or polygon.
Single-chip microcomputer is judged average water temperature in the scope of predetermined adjustment throttle valve opening, and judges the outlet temperature of heat exchanger general export 12 and the difference between the mean temperature on the heat exchanger tube, and the process of adjusting the aperture of choke valve according to preordering method comprises:
When the scope of differentiating average water temperature T 0 is T0〉20, choke valve does not adjust
When the scope of differentiating average water temperature T 0 is 15≤T0＜20, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜3 o'clock;
When the scope of differentiating average water temperature T 0 is 10≤T0＜15, satisfy T1-T2 〉=2 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜2 o'clock;
When the scope of differentiating average water temperature T 0 is 7.5≤T0＜10, satisfy T1-T2 〉=0.5 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜0.5 o'clock;
When the scope of differentiating average water temperature T 0 is 5≤T0＜7.5, satisfy T1-T2 〉=1 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜1 o'clock;
When the scope of differentiating average water temperature T 0 is 2.5≤T0＜5, satisfy T1-T2 〉=0 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜0 o'clock;
When the scope of differentiating average water temperature T 0 is T0＜2.5, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜3 o'clock.
Method of the present invention and to install measurable temperature accurate, avoid judging by accident and cause the phenomenon of cold-producing medium at evaporimeter rear portion hydrops, improved the evaporation and heat-exchange area, reduced the cold-storage required time, reduced power consumption, refrigeration system is regulated more steady, and cold-storage COP is greatly improved, control method is simple, reliable, implements easily.
For the method and apparatus of being set forth among each embodiment of the present invention, within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of method for controlling flow of refrigerant of fixed-frequency ice-accumulation air-conditioning unit is characterized in that, comprising:
Arrange at least more than one temperature sensor on the horizontal direction in Ice Storage Tank (13), arrange at least more than one temperature sensor on the depth direction in Ice Storage Tank, on each road heat exchanger tube of heat exchanger (14) in Ice Storage Tank (13), mounting temperature sensor (15) on No. one heat exchanger tube at least;
The temperature value union that obtains in the section in the Ice Storage Tank goes out average water temperature and obtains the outlet temperature of heat exchanger exit (12) and the mean temperature on the heat exchanger tube at the fixed time, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, judge the outlet temperature of heat exchanger exit (12) and the difference between the mean temperature on the heat exchanger tube, adjust the aperture of choke valve according to preordering method.
2, method for controlling flow of refrigerant according to claim 1 is characterized in that, the described outlet temperature of obtaining heat exchanger exit (12) comprises:
Obtain the temperature that goes up temperature sensor (19) in the general export (12) of heat exchanger (14), or obtain temperature, calculate the outlet temperature of arithmetic average at the outlet temperature sensor that converges each road heat exchanger tube of porch of general export (12).
3, method for controlling flow of refrigerant according to claim 1, it is characterized in that, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, and judge the outlet temperature of heat exchanger exit (12) and the difference between the mean temperature on the heat exchanger, the process of adjusting the corresponding aperture of choke valve according to preordering method comprises:
When the scope of differentiating average water temperature T 0 is T0〉20, choke valve does not adjust
When the scope of differentiating average water temperature T 0 is 15≤T0＜20, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜3 o'clock;
When the scope of differentiating average water temperature T 0 is 10≤T0＜15, satisfy T1-T2 〉=2 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜2 o'clock;
When the scope of differentiating average water temperature T 0 is 7.5≤T0＜10, satisfy T1-T2 〉=0.5 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜0.5 o'clock;
When the scope of differentiating average water temperature T 0 is 5≤T0＜7.5, satisfy T1-T2 〉=1 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜1 o'clock;
When the scope of differentiating average water temperature T 0 is 2.5≤T0＜5, satisfy T1-T2 〉=0 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜0 o'clock;
When the scope of differentiating average water temperature T 0 is T0＜2.5, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜3 o'clock.
4, a kind of refrigerant flow control device of fixed-frequency ice-accumulation air-conditioning unit is characterized in that, arranges at least more than one temperature sensor on the horizontal direction in Ice Storage Tank (13), arranges at least more than one temperature sensor on the depth direction in Ice Storage Tank;
On each road heat exchanger tube of heat exchanger (14) in Ice Storage Tank (13), mounting temperature sensor (15) on No. one heat exchanger tube at least;
Distinguish mounting temperature sensor at general export (12) mounting temperature sensor (19) of heat exchanger (14) or in the exit of each road heat exchanger tube of converging before the inlet of general export (12);
Described each temperature sensor connects the data acquisition unit that temperature signal is converted to data signal, and described data acquisition unit connects the single-chip microcomputer of handling described data signal;
The temperature value union that described single-chip microcomputer obtains in the Ice Storage Tank in the given time goes out average water temperature and obtains the outlet temperature of heat exchanger exit (12) and the mean temperature on the heat exchanger tube, when judging average water temperature in the scope of predetermined adjustment throttle valve opening, judge the outlet temperature of heat exchanger exit (12) and the difference between the mean temperature on the heat exchanger tube, adjust the corresponding aperture of choke valve according to preordering method.
5, refrigerant flow control device according to claim 4 is characterized in that, described Ice Storage Tank is cylindrical or polygon.
6, refrigerant flow control device according to claim 4, it is characterized in that, described single-chip microcomputer is judged average water temperature in the scope of predetermined adjustment throttle valve opening, and the outlet temperature of judgement heat exchanger exit (12) and the difference between the mean temperature on the heat exchanger tube, comprise according to the predetermined process of adjusting the corresponding aperture of choke valve:
When the scope of differentiating average water temperature T 0 is T0〉20, choke valve does not adjust
When the scope of differentiating average water temperature T 0 is 15≤T0＜20, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜3 o'clock;
When the scope of differentiating average water temperature T 0 is 10≤T0＜15, satisfy T1-T2 〉=2 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜2 o'clock;
When the scope of differentiating average water temperature T 0 is 7.5≤T0＜10, satisfy T1-T2 〉=0.5 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜0.5 o'clock;
When the scope of differentiating average water temperature T 0 is 5≤T0＜7.5, satisfy T1-T2 〉=1 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 5P is closed with choke valve in T1-T2＜1 o'clock;
When the scope of differentiating average water temperature T 0 is 2.5≤T0＜5, satisfy T1-T2 〉=0 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜0 o'clock;
When the scope of differentiating average water temperature T 0 is T0＜2.5, satisfy T1-T2 〉=3 o'clock if differentiate the difference of outlet temperature T 1 and mean temperature T2, will not adjust, if 1P is closed with choke valve in T1-T2＜3 o'clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100069468A CN101487612A (en) | 2009-02-13 | 2009-02-13 | Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100069468A CN101487612A (en) | 2009-02-13 | 2009-02-13 | Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101487612A true CN101487612A (en) | 2009-07-22 |
Family
ID=40890615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100069468A Pending CN101487612A (en) | 2009-02-13 | 2009-02-13 | Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101487612A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170388A (en) * | 2013-04-11 | 2013-06-26 | 中国环境科学研究院 | Method for mounting and debugging condensing device for outdoor photochemical comprehensive experimental system |
| CN105546695A (en) * | 2016-01-21 | 2016-05-04 | 合肥天鹅制冷科技有限公司 | Ice storage temperature control method for ice storage air conditioner |
| CN112033077A (en) * | 2020-08-26 | 2020-12-04 | 珠海格力电器股份有限公司 | Ice storage system and control method thereof |
-
2009
- 2009-02-13 CN CNA2009100069468A patent/CN101487612A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170388A (en) * | 2013-04-11 | 2013-06-26 | 中国环境科学研究院 | Method for mounting and debugging condensing device for outdoor photochemical comprehensive experimental system |
| CN103170388B (en) * | 2013-04-11 | 2015-08-19 | 中国环境科学研究院 | For the installation and debugging method of the condensing unit of outdoor photochemical comprehensive experimental system |
| CN105546695A (en) * | 2016-01-21 | 2016-05-04 | 合肥天鹅制冷科技有限公司 | Ice storage temperature control method for ice storage air conditioner |
| CN112033077A (en) * | 2020-08-26 | 2020-12-04 | 珠海格力电器股份有限公司 | Ice storage system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101038097B (en) | Refrigerating system of air-conditioning and method for controlling flow of refrigerant | |
| CN203100306U (en) | Liquid storage type air conditioner system | |
| US5214918A (en) | Refrigerator and method for indicating refrigerant amount | |
| CN102734865B (en) | VRF (variable refrigerant flow) air conditioning system and control method thereof | |
| CN202928232U (en) | Adjustable expansion throttling device and refrigeration system | |
| CN203454504U (en) | Intelligent defrosting air conditioning unit | |
| CN103712309A (en) | Air-conditioner refrigerant flow control method | |
| CN102563818B (en) | Inverter air conditioner and refrigerating operation method thereof | |
| CN108151249B (en) | Operation control method, operation control device, air conditioner and computer readable storage medium | |
| CN104390423B (en) | Temperature-controlled flow adjusting device and refrigerator | |
| CN103528129A (en) | Air conditioner indoor unit and method for adjusting temperature of air conditioner heat exchangers | |
| CN101487612A (en) | Refrigerant flow control method and device for fixed-frequency ice-accumulation air-conditioning unit | |
| CN103292534B (en) | A kind of method detecting cold medium flux | |
| CN201382504Y (en) | Refrigerant flow control device of fixed frequency ice storage air conditioning unit | |
| CN105605748B (en) | A kind of air-conditioning system geomantic omen joint debugging control method and system | |
| CN204478354U (en) | A kind of ice-storage air-conditioning control system | |
| CN101153760A (en) | Air conditioner back-heating device and its control method | |
| CN106440196B (en) | Central air-conditioner cooling water pumps online method for controlling frequency conversion and central air-conditioning | |
| CN201416985Y (en) | Central air-conditioning circulating pump power saving system | |
| CN101561173B (en) | Electricity-saving system of circulating pump in central air conditioner | |
| CN206398850U (en) | Determine frequency machine regulating system and fixed frequency air conditioner machine | |
| CN101694340A (en) | Method for judging starting point of defrosting and refrigerating system for intelligent defrosting | |
| CN201926077U (en) | Frequency conversion air-conditioner | |
| CN2901115Y (en) | Air conditioner refrigeration system | |
| CN205448298U (en) | Heat pump water heater electronic expansion valve control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090722 |