CN104296493A - Wide climatic zone energy-saving refrigerator - Google Patents
Wide climatic zone energy-saving refrigerator Download PDFInfo
- Publication number
- CN104296493A CN104296493A CN201410533389.6A CN201410533389A CN104296493A CN 104296493 A CN104296493 A CN 104296493A CN 201410533389 A CN201410533389 A CN 201410533389A CN 104296493 A CN104296493 A CN 104296493A
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- temperature
- refrigerator
- compressor
- controller
- difference
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to the technical field of refrigeration, in particular to an energy-saving refrigerator suitable for a wide climatic zone. The energy-saving refrigerator comprises a refrigerator box body thermal insulating layer, a refrigerating system and a control system, the refrigerating system comprises a compressor, a condenser, a capillary tube and an evaporator which are connected sequentially through pipelines, and the control system comprises a temperature sensing module, a temperature sensor, a microprogrammed control unit (MCU), a temperature controller and a compressor which are sequentially electrically connected. According to the wide climatic zone energy-saving refrigerator, starting-stopping temperature difference and starting-stopping ratio of the compressor of the refrigerator can be controlled through a temperature compensation module arranged on the MCU according to change of environment temperature Te, thereby, the starting-stopping ratio of the compressor of the refrigerator can be effectively reduced under high temperature environment, the starting time of each period can be shortened, frequently starting and stopping of the compressor can be avoided under low temperature environment, energy consumption of the refrigerator can be reduced by both modes, performances of the refrigerator can be improved, the service life of the compressor can be prolonged, and complaint risks and after-sale costs can be reduced.
Description
Technical field
The present invention relates to refrigeration technology field, more specifically, relate to a kind of energy-saving freezer being applicable to wide climate zone and using.
Background technology
Along with growth in the living standard, the use of ice-cold product is more and more extensive.How making ice-cold product energy-conservation and increasing the service life is the problem being badly in need of solving.Compressor is the critical component of refrigerator device, most important to the maintenance of compressor reliability.
Current Freezer Products is all the duty being controlled compressor by temperature controller, and the on-off temperature difference due to conventional temperature controller is certain, causes single inner compressor available machine time in start-stop cycle and service factor to be subject to the impact of environment temperature very large.When environment temperature is higher, refrigerator needs larger refrigerating capacity, and such compressor just needs to run for a long time, and increase the available machine time, compressor operating coefficient is very high, and long time running causes the energy consumption of refrigerator very large; When the temperature of the surroundings is low, the refrigerating capacity that refrigerator needs is less, will shut down, because running time shortens, cause high frequent to start, thus shorten the service life of compressor after compressor start in the short time.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of energy-saving freezer that normally can run under severe weather conditions is provided, can environmentally temperature change and adjust the startup-shutdown temperature difference of temperature controller, an offset is increased in on-off temperature difference, the service factor of compressor is regulated by on-off temperature difference offset, can make compressor can with normal startup-shutdown periodic duty under high temperature and low temperature environment, effective energy consumption of reduction refrigerator and the fault rate of compressor, extend the service life of product, market is reduced to complain and the relevant risk of generation and expense, there is good economic benefit.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
There is provided a kind of refrigerator being applicable to wide climate zone and using, comprise refrigerator box body heat-insulation layer, refrigeration system, control system, wherein refrigeration system comprises the compressor, condenser, capillary and the evaporimeter that connect successively; Comprise the temperature-sensitive module, temperature sensor, MCU controller, temperature controller, the compressor that are electrically connected successively, when refrigerator operation, control in the following manner:
A. refrigerator work is started;
B. temperature-sensitive module is utilized to respond to extraneous environment temperature Te;
C. step b is recorded Te and pass to MCU controller by temperature sensor, MCU controller controls the working condition of the temperature controller in refrigerator according to the change of Te; Described MCU controller inside is provided with temperature compensation module, and the on-off temperature difference △ T of temperature controller can be made to be the value fluctuated at optimum setting value △ T3, and the action step of temperature compensation module is as follows:
(1) as Te>43 DEG C, temperature compensation module makes on-off temperature difference △ T1 reduce α, wherein 1≤α≤3 DEG C, i.e. △ T1=△ T3-α;
(2) when 32 DEG C of <Te≤43 DEG C, temperature compensation module makes on-off temperature difference △ T2 reduce β, wherein 0< β≤2 DEG C, i.e. △ T2=△ T3-β;
(3) when 16 DEG C of <Te≤32 DEG C, the on-off temperature difference △ T3 of temperature controller is optimum setting value;
(4) when Te≤16 DEG C, temperature compensation module makes on-off temperature difference △ T4 increase γ, wherein 0< γ≤2 DEG C, △ T4=△ T3+ γ;
D. when in-cabinet temperature arrives the design temperature of temperature controller, compressor shutdown.
Refrigerator belonging to the present invention, be electrically connected by temperature-sensitive module, temperature sensor, MCU controller, temperature controller, compressor, utilize the environment temperature Te that the temperature-sensitive module induction of refrigerator box body outside is extraneous, by temperature sensor, temperature signal Te is passed to MCU controller, MCU controller controls the temperature controller on-off temperature difference of refrigerator according to the change of Te, thus controls the start-stop situation of compressor.By MCU controller, the effect controlling the best start-stop ratio of compressor can be reached.
One of improve, described temperature controller comprises turn-on temperature Td and shutdown temperature T, and the difference of described turn-on temperature Td and shutdown temperature T is △ T; Described MCU controller controls the start-stop ratio of compressor by the temperature difference △ T controlling temperature controller.
Further, when described environment temperature Te is 16 DEG C ~ 32 DEG C, the on-off temperature difference of temperature controller is optimum setting value △ T3, now compresses function by normal service factor work.And when environment temperature is higher than 32 DEG C, the turn-on temperature Td of temperature controller and the pass of shutdown temperature T are T=Td ~ △ T, when environment temperature is lower than 32 DEG C, the turn-on temperature Td of temperature controller and the pass of shutdown temperature T are T=Td+ △ T.
Alternatively, described optimum setting value △ T3 is 6 DEG C ~ 10 DEG C, and concrete setup parameter is determined according to the refrigeration system of refrigerator and warming method.
Compared with prior art, the invention has the beneficial effects as follows:
On the basis of traditional refrigerator, add the control system controlling temperature controller start-stop, comprise the temperature-sensitive module, temperature sensor, MCU controller, temperature controller, the compressor that are electrically connected successively, utilize the environment temperature Te that the temperature-sensitive module induction of refrigerator box body outside is extraneous, by temperature sensor, temperature signal Te is passed to MCU controller, MCU controller inside is provided with temperature compensation module, MCU controller controls the working condition of the temperature controller in refrigerator according to the change of Te, and the start-stop situation of compressor is determined by the working condition of temperature controller.
Refrigerator belonging to the present invention: the start-stop ratio that effectively can reduce freezer compressor under high ambient temperatures, shortens the available machine time in each cycle; At low temperature environment temperature, avoid compressor startup-shutdown frequent, both can reduce the energy consumption of refrigerator, improves the performance of refrigerator and extends compressor service life, reduces and complains risk and expense after sale.
The present invention is reasonable in design, and structure is simple, and cost is low, easy to use, is very applicable to harsher climate type, at very low ambient temperature and very can the operation of normal table under high ambient temperature, has good Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the control method of refrigerator.
Fig. 2 is the relation schematic diagram between the on-off temperature difference of temperature controller and environment temperature.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.Wherein, accompanying drawing only for exemplary illustration, expression be only schematic diagram, but not pictorial diagram, can not be interpreted as the restriction to this patent; In order to better embodiments of the invention are described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; For a person skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
The corresponding same or analogous parts of same or analogous label in the accompanying drawing of the embodiment of the present invention, in describing the invention, it will be appreciated that, if have term " on ", D score, " left side ", orientation or the position relationship of the instruction such as " right side " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the term of position relationship is described only for exemplary illustration in accompanying drawing, the restriction to this patent can not be interpreted as, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment 1
Be the first embodiment of refrigerator of the present invention as shown in Figure 1 to Figure 2, the control method changing refrigerator comprises the temperature-sensitive module 1, temperature sensor 2, MCU controller 3, temperature controller 4, the compressor 5 that are electrically connected successively, and it comprises following job step:
A. refrigerator work is started;
B. temperature-sensitive module 1 is utilized to respond to extraneous environment temperature Te;
C. step b is recorded Te and pass to by temperature sensor 2 MCU controller 3, MCU controller 3 to control the temperature controller 4 in refrigerator working condition according to the change of Te; Described MCU controller 3 inside is provided with temperature compensation module, and the on-off temperature difference △ T of temperature controller 4 can be made to be the value fluctuated at optimum setting value △ T3; The action step of temperature compensation module is as follows:
(1) as Te>43 DEG C, temperature compensation module makes on-off temperature difference △ T1 reduce α, wherein 1≤α≤3 DEG C, i.e. △ T1=△ T3-α;
(2) when 32 DEG C of <Te≤43 DEG C, temperature compensation module makes on-off temperature difference △ T2 reduce β, wherein 0< β≤2 DEG C, i.e. △ T2=△ T3-β;
(3) when 16 DEG C of <Te≤32 DEG C, the on-off temperature difference △ T3 of temperature controller is optimum setting value;
(4) when Te≤16 DEG C, temperature compensation module makes on-off temperature difference △ T4 increase γ, wherein 0< γ≤2 DEG C, △ T4=△ T3+ γ;
D. when in-cabinet temperature arrives the design temperature of temperature controller, compressor shutdown.
Wherein, temperature controller 4 comprises turn-on temperature Td and shutdown temperature T, and the difference of turn-on temperature Td and shutdown temperature T is △ T; MCU controller 3 controls the start-stop of compressor 5 by the temperature difference △ T controlling temperature controller 4.When environment temperature Te is 16 DEG C ~ 32 DEG C, the on-off temperature difference of temperature controller 4 is optimum setting value △ T3, and now compressor 5 can by normal start-stop than running.
Wherein, optimum setting value △ T3 is 6 DEG C ~ 10 DEG C, and concrete setup parameter is determined according to the refrigeration system of refrigerator and warming method.
Embodiment 2
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (5)
1. a wide climate zone energy-saving freezer, is characterized in that, comprises refrigerator box body heat-insulation layer, refrigeration system, control system, and wherein refrigeration system comprises the compressor, condenser, capillary and the evaporimeter that connect successively; Control system comprises the temperature-sensitive module (1), temperature sensor (2), MCU controller (3), temperature controller (4), the compressor (5) that are electrically connected successively, during refrigerator work, comprises following job step:
A. refrigerator work is started;
B. temperature-sensitive module (1) is utilized to respond to extraneous environment temperature Te;
C. step (b) is recorded Te and pass to MCU controller (3) by temperature sensor (2), MCU controller (3) controls the on-off temperature difference of refrigerator temperature controller (4) according to the change of Te; Described MCU controller (3) inside is provided with temperature compensation module, and the on-off temperature difference △ T of temperature controller (4) can be made to be the value fluctuated at optimum setting value △ T3; The action step of temperature compensation module is as follows:
(1) as Te>43 DEG C, temperature compensation module makes on-off temperature difference △ T1 reduce α, wherein 1≤α≤3 DEG C, i.e. △ T1=△ T3-α;
(2) when 32 DEG C of <Te≤43 DEG C, temperature compensation module makes on-off temperature difference △ T2 reduce β, wherein 0< β≤2 DEG C, i.e. △ T2=△ T3-β;
(3) when 16 DEG C of <Te≤32 DEG C, the on-off temperature difference △ T3 of temperature controller is optimum setting value;
(4) when Te≤16 DEG C, temperature compensation module makes on-off temperature difference △ T4 increase γ, wherein 0< γ≤2 DEG C, that is: △ T4=△ T3+ γ;
D. the start-stop situation of compressor (5) is controlled by temperature controller (4).
2. refrigerator according to claim 1, is characterized in that, described temperature controller (4) comprises turn-on temperature Td and shutdown temperature T, and the difference of described turn-on temperature Td and shutdown temperature T is △ T; Described MCU controller (3) controls the start-stop of compressor (5) by the temperature difference △ T controlling temperature controller (4).
3. refrigerator according to claim 2, is characterized in that, when described environment temperature Te is 16 DEG C ~ 32 DEG C, the on-off temperature difference of temperature controller (4) is optimum setting value △ T3, and now compressor (5) can compare work by the start-stop of the best.
4. refrigerator according to claim 3, is characterized in that, described optimum setting value △ T3 is 6 DEG C ~ 10 DEG C, and concrete setup parameter is determined according to the refrigeration system of refrigerator and warming method.
5. the refrigerator according to claim 1-3, is characterized in that, in-cabinet temperature is determined by temperature controller, when in-cabinet temperature arrives the design temperature of temperature controller, and compressor shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410533389.6A CN104296493B (en) | 2014-10-11 | 2014-10-11 | A kind of wide climate zone energy-saving freezer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410533389.6A CN104296493B (en) | 2014-10-11 | 2014-10-11 | A kind of wide climate zone energy-saving freezer |
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| CN104296493A true CN104296493A (en) | 2015-01-21 |
| CN104296493B CN104296493B (en) | 2016-09-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440617A (en) * | 2015-06-26 | 2017-02-22 | Bsh家用电器有限公司 | Refrigeration apparatus and operating method therefor |
| CN107101451A (en) * | 2017-04-26 | 2017-08-29 | Tcl家用电器（合肥）有限公司 | Refrigerator and its refrigeration control method and device |
| CN108759289A (en) * | 2018-05-18 | 2018-11-06 | Tcl家用电器（合肥）有限公司 | Refrigerator temperature control method, device, refrigerator and storage medium |
| CN110296560A (en) * | 2019-06-12 | 2019-10-01 | 合肥美的电冰箱有限公司 | A kind of freezer compressor startup-shutdown temperature spot control method, device and refrigerator |
| IT201900002315A1 (en) * | 2019-02-18 | 2020-08-18 | Univ Degli Studi Di Salerno | METHOD AND REGULATION GROUP OF A REFRIGERATOR SYSTEM |
| CN112524852A (en) * | 2020-12-03 | 2021-03-19 | 中电海康集团有限公司 | Self-adaptive frequency conversion method and system of refrigeration compressor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250867A (en) * | 1999-09-14 | 2000-04-19 | 海尔集团公司 | Temp. control method for refrigerator and electric refrigerator using said method |
| CN1548893A (en) * | 2003-05-08 | 2004-11-24 | 河南新飞电器有限公司 | Control method of refrigerator temperature |
| CN101408775A (en) * | 2007-10-12 | 2009-04-15 | 苏州三星电子有限公司 | Refrigerator temperature control method |
| CN102345965A (en) * | 2010-08-02 | 2012-02-08 | 海信（北京）电器有限公司 | All-weather energy saving method and all-weather energy saving device for refrigerator and all-weather energy saving refrigerator |
| CN102735018A (en) * | 2012-06-26 | 2012-10-17 | 四川长虹电器股份有限公司 | Method for controlling temperature of mechanical refrigerator in frequency conversion mode |
| CN102878776A (en) * | 2012-10-25 | 2013-01-16 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and control method thereof |
| KR20130037531A (en) * | 2011-10-06 | 2013-04-16 | 위니아만도 주식회사 | Method for power saving motion of refrigerator |
| CN103245164A (en) * | 2013-04-27 | 2013-08-14 | 合肥美菱股份有限公司 | Temperature control method and device for refrigerating compartment |
-
2014
- 2014-10-11 CN CN201410533389.6A patent/CN104296493B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250867A (en) * | 1999-09-14 | 2000-04-19 | 海尔集团公司 | Temp. control method for refrigerator and electric refrigerator using said method |
| CN1548893A (en) * | 2003-05-08 | 2004-11-24 | 河南新飞电器有限公司 | Control method of refrigerator temperature |
| CN101408775A (en) * | 2007-10-12 | 2009-04-15 | 苏州三星电子有限公司 | Refrigerator temperature control method |
| CN102345965A (en) * | 2010-08-02 | 2012-02-08 | 海信（北京）电器有限公司 | All-weather energy saving method and all-weather energy saving device for refrigerator and all-weather energy saving refrigerator |
| KR20130037531A (en) * | 2011-10-06 | 2013-04-16 | 위니아만도 주식회사 | Method for power saving motion of refrigerator |
| CN102735018A (en) * | 2012-06-26 | 2012-10-17 | 四川长虹电器股份有限公司 | Method for controlling temperature of mechanical refrigerator in frequency conversion mode |
| CN102878776A (en) * | 2012-10-25 | 2013-01-16 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and control method thereof |
| CN103245164A (en) * | 2013-04-27 | 2013-08-14 | 合肥美菱股份有限公司 | Temperature control method and device for refrigerating compartment |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440617A (en) * | 2015-06-26 | 2017-02-22 | Bsh家用电器有限公司 | Refrigeration apparatus and operating method therefor |
| CN106440617B (en) * | 2015-06-26 | 2021-03-19 | Bsh家用电器有限公司 | Refrigeration device and method for operating the same |
| CN107101451A (en) * | 2017-04-26 | 2017-08-29 | Tcl家用电器（合肥）有限公司 | Refrigerator and its refrigeration control method and device |
| CN108759289A (en) * | 2018-05-18 | 2018-11-06 | Tcl家用电器（合肥）有限公司 | Refrigerator temperature control method, device, refrigerator and storage medium |
| CN108759289B (en) * | 2018-05-18 | 2020-10-23 | Tcl家用电器（合肥）有限公司 | Refrigerator temperature control method and device, refrigerator and storage medium |
| IT201900002315A1 (en) * | 2019-02-18 | 2020-08-18 | Univ Degli Studi Di Salerno | METHOD AND REGULATION GROUP OF A REFRIGERATOR SYSTEM |
| WO2020170073A1 (en) * | 2019-02-18 | 2020-08-27 | Università degli Studi di Salerno | Adjustment method and adjustment group for a refrigeration system |
| CN110296560A (en) * | 2019-06-12 | 2019-10-01 | 合肥美的电冰箱有限公司 | A kind of freezer compressor startup-shutdown temperature spot control method, device and refrigerator |
| CN110296560B (en) * | 2019-06-12 | 2021-09-03 | 合肥美的电冰箱有限公司 | Method and device for controlling starting and stopping temperature points of refrigerator compressor and refrigerator |
| CN112524852A (en) * | 2020-12-03 | 2021-03-19 | 中电海康集团有限公司 | Self-adaptive frequency conversion method and system of refrigeration compressor |
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| CN104296493B (en) | 2016-09-21 |
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