CN114198955A - Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet - Google Patents
Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet Download PDFInfo
- Publication number
- CN114198955A CN114198955A CN202111517436.4A CN202111517436A CN114198955A CN 114198955 A CN114198955 A CN 114198955A CN 202111517436 A CN202111517436 A CN 202111517436A CN 114198955 A CN114198955 A CN 114198955A
- Authority
- CN
- China
- Prior art keywords
- freq
- compressor
- adj
- frequency
- temperature
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet, which comprises the following steps: acquiring the indoor temperature Tr and the user set temperature Ts of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an 89C51 inner core of a single chip microcomputer as a main control chip, and calculating the difference value between the Tr and the Ts; if Tr-Ts ≧ Δ t1, ComFreq ≧ Freq _ max; if Ts-Tr is less than or equal to Δ t2, ComFreq ═ Freq _ min + Freq _ bc +. DELTA t2 × mul + Freq _ adj; if the compressor is stopped or Tr < Ts, ComFreq is 0; if none of the above conditions is met, comp Freq is Freq _ min. The invention can adjust the working frequency according to the temperature difference, so as to save the electricity charge and reduce the noise; the problem of control by temperature change long-time low frequency operation stop frequency output when unable reaching the settlement temperature is solved.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet.
Background
The improvement of people's life gives the popularization of red wine culture to ordinary families, and drinking red wine has become a habit of people's life, and collecting and storing red wine has been fairly popularized in people's daily life, and in the red wine storage process, need pay attention to: the storage temperature of the red wine is 12-18 ℃. At present, the red wine cabinet refrigeration compressor mostly uses an alternating current fixed-frequency compressor due to the relative simplicity of an electric control system, and has the defects of electricity consumption and slightly high noise. The direct current frequency conversion is used to save 15% of electricity cost compared with the alternating current frequency conversion, and the direct current frequency conversion is superior to the alternating current frequency conversion in the aspects of preservation effect, product silence, service life, control precision and the like.
The invention aims to provide a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet.
Disclosure of Invention
The invention aims to provide a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet, which can realize intelligent temperature control and save energy consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
the method for controlling the temperature of the direct-current variable-frequency compressor for the single-chamber red wine cabinet comprises the following steps:
acquiring the indoor temperature Tr and the set temperature Ts of a user of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an inner core of a single chip microcomputer 89C51 as a main control chip, and calculating the difference value between the indoor temperature Tr and the set temperature Ts;
if Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max;
if Ts-Tr is less than or equal to Δ t2, the operating frequency ComFreq is equal to Freq _ min + Freq _ bc +. Δ t2 × mul + Freq _ adj;
if the compressor is in a stop state or Tr < Ts, the running frequency Compfeq is 0;
if the above conditions are not met, the compressor running frequency ComFreq is equal to Freq _ min;
wherein, the delta t1 is an engineering constant and takes a value of 6 ℃; delta t2 is an engineering constant and takes the value of 0.5 ℃; freq _ max is the highest frequency of the compressor, Freq _ min is the lowest frequency of the compressor, Freq _ bc is the frequency compensation value, 2HZ is taken as the value, mul is the multiple, 10 is taken as the value, and Freq _ adj is the frequency self-adjusting value.
The method for controlling the temperature of the direct-current variable-frequency compressor for the single-chamber red wine cabinet adopts the direct-current variable-frequency compressor and takes the 89C51 inner core of the single chip microcomputer as a main control chip, and the working frequency is adjusted according to the temperature difference, so that the electricity charge is saved and the noise is reduced; the invention solves the problem that the frequency output is stopped when the temperature control cannot reach the temperature due to long-time low-frequency operation by adding a self-regulation algorithm.
As a preferable scheme of the method for controlling the temperature of the direct-current variable-frequency compressor for the single-chamber red wine cabinet, the method comprises the following steps:
s10, acquiring the indoor temperature Tr and the user set temperature Ts of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an 89C51 inner core of a single chip microcomputer as a main control chip;
s20, judging whether the compressor is started or not, and if the compressor is in a stop state, setting the running frequency CompFreq to 0;
if the compressor is in an on state, judging whether Tr is less than Ts, and if so, setting the running frequency Compfeq to 0; if Tr is not more than Ts and the operation condition one is met: Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max; if the first operating condition is not met, the step S30 is executed;
s30, judging whether the compressor meets the second operation condition: Ts-Tr is not more than delta t2, and if the operation condition II is met, the operation frequency ComFreq is equal to Freq _ min + Freq _ bc + delta t2 × mul + Freq _ adj of the compressor; if the second operation condition is not met, the step S40 is executed;
s40, the compressor is operated at the lowest frequency, i.e., the compressor operating frequency, comp Freq — min.
As a preferable scheme of the method for controlling the temperature of the direct-current variable-frequency compressor for the single-chamber wine cabinet, the algorithm of Freq _ adj in the step S30 is as follows:
s30a, judging the difference between the indoor temperature Tr and the set temperature Ts, and if Tr +. DELTA.tclr < Ts, then Freq _ adj is 0; otherwise, go to step S30 b;
s30b, every specific time tadjJudging the size between Tr and Ts once, if Tr is greater than Ts, comparing the current indoor temperature TrAt presentWhether or not it is greater than the last recorded indoor temperature TrLast timeIf Tr is satisfiedAt present＞TrLast timeFreq _ adjAt present＝Freq_adjLast time+ 2; if not, Freq _ adjAt present＝Freq_adjLast time-2；
If Freq _ adjAt presentIf Freq _ min is less than, Freq _ adj is equal to Freq _ min, and if Freq _ adj is less thanAt presentWhen Freq _ max is greater, Freq _ adj ═ Freq \ umax to ensure that Freq _ min is less than or equal to Freq _ adjAt present≤Freq_max；
Wherein Freq _ adjAt presentIs the current frequency self-adjustment value, Freq _ adjLast timeIs a specific time tadjThe previous frequency self-adjusts to value.
As a preferable scheme of the method for controlling the temperature of the direct-current variable-frequency compressor for the single-chamber red wine cabinet, the specific time tadjIs 1 min.
The invention has the beneficial effects that: the working frequency is adjusted by using the direct-current variable-frequency compressor according to the temperature difference, so that the electricity cost is saved and the noise is reduced; the invention solves the problem that the frequency output is stopped when the temperature control runs for a long time at low frequency and cannot reach the set temperature by adding a self-regulation algorithm.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a flow chart of a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber wine cabinet according to the invention.
FIG. 2 is a flow chart of the algorithm for Freq _ adj of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The embodiment provides a method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet, which comprises the following steps:
acquiring the indoor temperature Tr and the set temperature Ts of a user of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an inner core of a single chip microcomputer 89C51 as a main control chip, and calculating the difference value between the indoor temperature Tr and the set temperature Ts;
if Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max;
if Ts-Tr is less than or equal to Δ t2, the operating frequency ComFreq is equal to Freq _ min + Freq _ bc +. Δ t2 × mul + Freq _ adj;
if the compressor is in a stop state or Tr < Ts, the running frequency Compfeq is 0;
if the above conditions are not met, the compressor running frequency ComFreq is equal to Freq _ min;
wherein, the delta t1 is an engineering constant and takes a value of 6 ℃; delta t2 is an engineering constant and takes the value of 0.5 ℃; freq _ max is the highest frequency of the compressor, Freq _ min is the lowest frequency of the compressor, Freq _ bc is the frequency compensation value, 2HZ is taken as the value, mul is the multiple, 10 is taken as the value, and Freq _ adj is the frequency self-adjusting value.
The invention takes a singlechip 89C51 kernel as a main control chip as a red wine cabinet controller main chip, obtains a temperature set value required by a user by obtaining the indoor temperature of the red wine cabinet, and then obtains a working frequency command to control a direct current variable frequency compressor to carry out refrigeration temperature control by comparing the two relations through the temperature control method of the invention.
Further, as shown in fig. 1, the method for controlling the temperature of the single-chamber wine cabinet by using the dc inverter compressor in the embodiment includes the following steps:
s10, acquiring the indoor temperature Tr and the user set temperature Ts of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an 89C51 inner core of a single chip microcomputer as a main control chip;
s20, judging whether the compressor is started or not, and if the compressor is in a stop state, setting the running frequency CompFreq to 0;
if the compressor is in an on state, judging whether Tr is less than Ts, and if so, setting the running frequency Compfeq to 0; if Tr is not more than Ts and the operation condition one is met: Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max; if the first operating condition is not met, the step S30 is executed;
s30, judging whether the compressor meets the second operation condition: Ts-Tr is not more than delta t2, and if the operation condition II is met, the operation frequency ComFreq is equal to Freq _ min + Freq _ bc + delta t2 × mul + Freq _ adj of the compressor; if the second operation condition is not met, the step S40 is executed;
s40, the compressor is operated at the lowest frequency, i.e., the compressor operating frequency, comp Freq — min.
As shown in fig. 2, Freq _ adj in step S30 is calculated as follows:
s30a, judging the difference between the indoor temperature Tr and the set temperature Ts, and if Tr +. DELTA.tclr < Ts, then Freq _ adj is 0; otherwise, go to step S30 b;
s30b, every specific time tadjJudging the size between Tr and Ts once, if Tr is greater than Ts, comparing the current indoor temperature TrAt presentWhether or not it is greater than the last recorded indoor temperature TrLast timeIf Tr is satisfiedAt present＞TrLast timeFreq _ adjAt present＝Freq_adjLast time+ 2; if not, Freq _ adjAt present＝Freq_adjLast time-2；
If Freq _ adjAt presentIf Freq _ min is less than, Freq _ adj is equal to Freq _ min, and if Freq _ adj is less thanAt presentFreq _ max, then Freq _ adj equals Freq _ max to ensure that Freq _ min is less than or equal to Freq _ adjAt present≤Freq_max；
Wherein Freq _ adjAt presentIs the current frequency self-adjustment value, Freq _ adjLast timeIs a specific time tadjThe previous frequency self-adjusts to value.
Wherein the specific time tadjIs 1 min.
The Freq _ adj algorithm can solve the problem that the frequency output is stopped when the compressor runs for a long time at low frequency and cannot reach the set temperature.
It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (4)
1. A method for controlling the temperature of a direct-current variable-frequency compressor for a single-chamber red wine cabinet is characterized by comprising the following steps of:
acquiring the indoor temperature Tr and the set temperature Ts of a user of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an inner core of a single chip microcomputer 89C51 as a main control chip, and calculating the difference value between the indoor temperature Tr and the set temperature Ts;
if Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max;
if Ts-Tr is less than or equal to Δ t2, the operating frequency ComFreq is equal to Freq _ min + Freq _ bc +. Δ t2 × mul + Freq _ adj;
if the compressor is in a stop state or Tr < Ts, the running frequency Compfeq is 0;
if the above conditions are not met, the compressor running frequency ComFreq is equal to Freq _ min;
wherein, the delta t1 is an engineering constant and takes a value of 6 ℃; delta t2 is an engineering constant and takes the value of 0.5 ℃; freq _ max is the highest frequency of the compressor, Freq _ min is the lowest frequency of the compressor, Freq _ bc is the frequency compensation value, 2HZ is taken as the value, mul is the multiple, 10 is taken as the value, and Freq _ adj is the frequency self-adjusting value.
2. The method for controlling the temperature of a DC inverter compressor used in a wine cellar of claim 1, comprising the steps of:
s10, acquiring the indoor temperature Tr and the user set temperature Ts of the red wine cabinet by adopting a direct-current variable-frequency compressor and taking an 89C51 inner core of a single chip microcomputer as a main control chip;
s20, judging whether the compressor is started or not, and if the compressor is in a stop state, setting the running frequency CompFreq to 0;
if the compressor is in an on state, judging whether Tr is less than Ts, and if so, setting the running frequency Compfeq to 0; if Tr is not more than Ts and the operation condition one is met: Tr-Ts ≧ Δ t1, the compressor operating frequency Comprefeq ≧ Freq _ max; if the first operating condition is not met, the step S30 is executed;
s30, judging whether the compressor meets the second operation condition: Ts-Tr is not more than delta t2, and if the operation condition II is met, the operation frequency ComFreq is equal to Freq _ min + Freq _ bc + delta t2 × mul + Freq _ adj of the compressor; if the second operation condition is not met, the step S40 is executed;
s40, the compressor is operated at the lowest frequency, i.e., the compressor operating frequency, comp Freq — min.
3. The method for controlling the temperature of a DC inverter compressor of a wine cellar of claim 2, wherein the algorithm for Freq _ adj in step S30 is as follows:
s30a, judging the difference between the indoor temperature Tr and the set temperature Ts, and if Tr +. DELTA.tclr < Ts, then Freq _ adj is 0; otherwise, go to step S30 b;
s30b, every specific time tadjJudging the size between Tr and Ts once, if Tr is greater than Ts, comparing the current indoor temperature TrAt presentWhether or not it is greater than the last recorded indoor temperature TrLast timeIf Tr is satisfiedAt present＞TrLast timeFreq _ adjAt present＝Freq_adjLast time+ 2; if not, Freq _ adjAt present＝Freq_adjLast time-2；
If Freq _ adjAt presentIf Freq _ min is less than, Freq _ adj is equal to Freq _ min, and if Freq _ adj is less thanAt presentFreq _ max, then Freq _ adj equals Freq _ max to ensure that Freq _ min is less than or equal to Freq _ adjAt present≤Freq_max；
Wherein Freq _ adjAt presentIs the current frequency self-adjustment value, Freq _ adjLast timeIs a specific time tadjThe previous frequency self-adjusts to value.
4. The DC frequency conversion for the wine cellar of claim 3Method for controlling the temperature of a compressor, characterized in that a specific time tadjIs 1 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517436.4A CN114198955A (en) | 2021-12-13 | 2021-12-13 | Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517436.4A CN114198955A (en) | 2021-12-13 | 2021-12-13 | Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198955A true CN114198955A (en) | 2022-03-18 |
Family
ID=80652882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111517436.4A Pending CN114198955A (en) | 2021-12-13 | 2021-12-13 | Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114198955A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473574Y (en) * | 2001-04-25 | 2002-01-23 | 海尔集团公司 | Light control frequency changing refrigerator |
| WO2015006973A1 (en) * | 2013-07-19 | 2015-01-22 | 海信容声(广东)冰箱有限公司 | Refrigerator temperature control method using approach parameter |
| CN104913571A (en) * | 2015-06-25 | 2015-09-16 | 合肥美的电冰箱有限公司 | Variable frequency refrigerator and control method thereof |
| CN110929408A (en) * | 2019-12-02 | 2020-03-27 | 芜湖倡蓝新能源科技有限责任公司 | Compressor frequency calculation of variable frequency air conditioner |
| CN113758129A (en) * | 2020-06-02 | 2021-12-07 | 青岛海尔电冰箱有限公司 | Control method of refrigerator |
-
2021
- 2021-12-13 CN CN202111517436.4A patent/CN114198955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473574Y (en) * | 2001-04-25 | 2002-01-23 | 海尔集团公司 | Light control frequency changing refrigerator |
| WO2015006973A1 (en) * | 2013-07-19 | 2015-01-22 | 海信容声(广东)冰箱有限公司 | Refrigerator temperature control method using approach parameter |
| CN104913571A (en) * | 2015-06-25 | 2015-09-16 | 合肥美的电冰箱有限公司 | Variable frequency refrigerator and control method thereof |
| CN110929408A (en) * | 2019-12-02 | 2020-03-27 | 芜湖倡蓝新能源科技有限责任公司 | Compressor frequency calculation of variable frequency air conditioner |
| CN113758129A (en) * | 2020-06-02 | 2021-12-07 | 青岛海尔电冰箱有限公司 | Control method of refrigerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105333578B (en) | A kind of compressor frequency control method of convertible frequency air-conditioner | |
| CN103388880B (en) | A kind of control method of air-conditioner | |
| CN103388879B (en) | A kind of control method of air-conditioner | |
| CN109539496B (en) | Air conditioner self-adaptive control method and air conditioner | |
| CN106949595B (en) | It is effectively energy-efficient to be based on electric energy close friend air conditioner load side active demand method | |
| CN108168052B (en) | optimal start-stop control method for central air-conditioning refrigeration system | |
| CN109812932B (en) | Temperature rise control method and device for power module of variable frequency air conditioner | |
| CN102901320B (en) | Control method of refrigerator applicable to high-temperature environment | |
| CN106288192B (en) | Air-conditioning pfc circuit control method and air-conditioning | |
| CN108266778B (en) | Heat pump heating system and heat pump heating method | |
| CN105674489A (en) | Optimal control method and system of central air conditioner water pump | |
| CN103090506A (en) | Control method of variable frequency air conditioner at night | |
| CN104764162A (en) | Energy saving control method and system of air conditioner and air conditioner | |
| CN105115241A (en) | Refrigerator energy-saving control method and refrigerator adopting method | |
| WO2018214766A1 (en) | Control method and control device for frequency change air conditioner, and frequency change air conditioner | |
| WO2018214767A1 (en) | Control method for constant-speed air conditioner, and constant-speed air conditioner | |
| CN114198955A (en) | Method for controlling temperature of direct-current variable-frequency compressor for single-chamber red wine cabinet | |
| CN104515264B (en) | A kind of air conditioner intelligent energy-saving control method and system | |
| WO2021088620A1 (en) | Water pump unit power-saving optimized operation method and switch point determination method | |
| CN111735243B (en) | Compressor running frequency control method | |
| CN109983284B (en) | Air conditioning system based on variable frequency compressor and control method thereof | |
| CN110375456B (en) | Auxiliary heat source control method and device for heat pump hot water heating unit | |
| CN113067345B (en) | Power factor compensation method, controller and system of photovoltaic alternating current system | |
| CN111288559A (en) | Frequency conversion control method of direct refrigeration type magnetic suspension air conditioning unit | |
| CN111078401B (en) | Periodic task temperature sensing energy consumption optimization method |
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 |