EP3090221A1 - Method and device for controlling a freezing phase in a single-control combined refrigeration appliance, and related refrigeration appliance - Google Patents
Method and device for controlling a freezing phase in a single-control combined refrigeration appliance, and related refrigeration applianceInfo
- Publication number
- EP3090221A1 EP3090221A1 EP14830702.8A EP14830702A EP3090221A1 EP 3090221 A1 EP3090221 A1 EP 3090221A1 EP 14830702 A EP14830702 A EP 14830702A EP 3090221 A1 EP3090221 A1 EP 3090221A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- temperature
- refrigeration appliance
- turned
- freezing phase
- 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.)
- Withdrawn
Links
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/30—Quick freezing
-
- 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
- F25D2700/10—Sensors measuring the temperature of the evaporator
-
- 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
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/121—Sensors measuring the inside temperature of particular compartments
Definitions
- the present invention relates to a method and a device for controlling a freezing phase in a single-control combined refrigeration appliance, and to a related refrigeration appliance.
- a single-control combined refrigeration appliance is provided with at least one refrigerator compartment (also commonly called “fresh" compartment, with a normal internal temperature of approx. + 4°) and at least one freezer compartment for freezing food and preserving frozen food; it is also provided with a single refrigeration circuit with a single compressor; it has a temperature sensor detecting only the temperature in the refrigerator compartment only, and not that in the freezer compartment, and an evaporator temperature sensor, which is used for controlling the defrosting operation; it is provided with a fan adapted to blow cold air into the refrigerator compartment from the freezer compartment when the temperature in the refrigerator compartment exceeds a threshold. It is to be understood, therefore, that the field of application of the invention refers to such a refrigeration appliance.
- a method for controlling such a single-control combined refrigerator wherein activation of the compressor occurs following a cold request generated by the refrigerator compartment when the temperature in the refrigerator compartment exceeds a threshold.
- the temperature in the freezer compartment is not detected, and therefore it does not affect the compressor on/off control.
- a drawback of this method is that it is not effective in executing the process of freezing foods or other substances that are inserted into the freezer compartment at room temperature. Since there is no direct control of the temperature in the freezer compartment, this process cannot be optimized, resulting in a time-consuming, energy- consuming or incomplete freezing process.
- the invention provides, in single-control combined refrigerators, a cycle called "super freezer", which speeds up the cooling of foods inserted in the freezer compartment; said cycle can be activated by the user via a user interface.
- the invention relates to a method for controlling a freezing phase in a refrigeration appliance of the single- control combined type, said refrigeration appliance comprising at least one refrigerator compartment, at least one freezer compartment, a single compressor, a temperature sensor detecting only the temperature in the refrigerator compartment, a temperature sensor detecting the temperature of the evaporator of the refrigeration circuit, a fan, the method being characterized in that it comprises the steps of:
- Figure 1 shows a flow chart of the method of the invention, according to a first variant thereof
- Figure 2 shows a flow chart of the method of the invention, according to a second variant thereof
- Figure 3 shows a flow chart of the method of the invention, according to a third variant thereof.
- the method for controlling the freezing phase in a single-control refrigeration appliance as defined above is such that it creates a freezing cycle called "super-freezer", aimed at speeding up the process of lowering the temperature of the food placed in the freezer compartment, e.g. from room temperature to a target temperature of -18 °C.
- the "super-freezer" freezing cycle has a predetermined duration, e.g. 24 h.
- the cycle checks that said duration is not exceeded (t>24h) ; if it is, the cycle will end (End SF) automatically. Otherwise, the cycle will continue.
- the state of the fan normally depends on the request for a temperature reduction in the refrigerator compartment .
- the cycle checks again that its duration has not been exceeded (t>24h) , in which case the cycle will end (End SF) automatically. Otherwise, the cycle will continue.
- T fg T3
- One example of embodiment of the device of the invention comprises a circuit that implements the steps of the method, which circuit is inserted into a single-control combined refrigeration appliance comprising the above- defined elements.
- Said circuit may comprise per se known elements as described above, and also a computer program comprising coding means for implementing one or more steps of the method when said program is executed by a computer. It is therefore understood that the protection scope extends to said computer program as well as to computer-readable means that comprise a recorded message, said computer-readable means comprising program coding means for implementing one or more steps of the method when said program is executed by a computer.
Abstract
A method is described for controlling a freezing phase in a refrigeration appliance of the single-control combined type, said refrigeration appliance comprising at least one refrigerator compartment, at least one freezer compartment, a single compressor, a temperature sensor detecting only the temperature in the refrigerator compartment, a temperature sensor detecting the temperature of the evaporator of the refrigeration circuit, a fan, the method being characterized in that it comprises the steps of: - activating said freezing phase; - the compressor is consequently turned on (Cps=on); - if the temperature of the evaporator TeVaP < Tl, then said fan is turned on (Fz fan = ON); - if the temperature of the evaporator TeVaP > T2, with T2 > Tl, then said fan is turned off (Fz fan = OFF); - deactivating said freezing phase after a given time has elapsed following said activation.
Description
METHOD AND DEVICE FOR CONTROLLING A FREEZING PHASE IN A SINGLE-CONTROL COMBINED REFRIGERATION APPLIANCE, AND RELATED REFRIGERATION APPLIANCE
DESCRIPTION
Field of the invention
The present invention relates to a method and a device for controlling a freezing phase in a single-control combined refrigeration appliance, and to a related refrigeration appliance.
Background art
A single-control combined refrigeration appliance is provided with at least one refrigerator compartment (also commonly called "fresh" compartment, with a normal internal temperature of approx. + 4°) and at least one freezer compartment for freezing food and preserving frozen food; it is also provided with a single refrigeration circuit with a single compressor; it has a temperature sensor detecting only the temperature in the refrigerator compartment only, and not that in the freezer compartment, and an evaporator temperature sensor, which is used for controlling the defrosting operation; it is provided with a fan adapted to blow cold air into the refrigerator compartment from the freezer compartment when the temperature in the refrigerator compartment exceeds a threshold. It is to be understood, therefore, that the field of application of the invention refers to such a refrigeration appliance.
A method for controlling such a single-control combined refrigerator is known wherein activation of the compressor occurs following a cold request generated by the refrigerator compartment when the temperature in the refrigerator compartment exceeds a threshold. The temperature in the freezer compartment is not detected, and
therefore it does not affect the compressor on/off control.
A drawback of this method is that it is not effective in executing the process of freezing foods or other substances that are inserted into the freezer compartment at room temperature. Since there is no direct control of the temperature in the freezer compartment, this process cannot be optimized, resulting in a time-consuming, energy- consuming or incomplete freezing process.
Summary of the invention
It is therefore one object of the present invention to propose a method and a device for controlling a freezing phase in a single-control combined refrigeration appliance, and a related refrigeration appliance, which can overcome the above-mentioned drawbacks.
The invention provides, in single-control combined refrigerators, a cycle called "super freezer", which speeds up the cooling of foods inserted in the freezer compartment; said cycle can be activated by the user via a user interface.
The invention relates to a method for controlling a freezing phase in a refrigeration appliance of the single- control combined type, said refrigeration appliance comprising at least one refrigerator compartment, at least one freezer compartment, a single compressor, a temperature sensor detecting only the temperature in the refrigerator compartment, a temperature sensor detecting the temperature of the evaporator of the refrigeration circuit, a fan, the method being characterized in that it comprises the steps of:
- activating said freezing phase;
- the compressor is consequently turned on;
- if the temperature of the evaporator TeVaP < Tl, then said fan is turned on;
- if the temperature of the evaporator TeVaP > T2, with T2 >
Tl, then said fan is turned off;
- deactivating said freezing phase after a given time has elapsed following said activation.
It is a particular object of the present invention to provide a method and a device for controlling a freezing phase in a single-control combined refrigeration appliance, and a related refrigeration appliance, as set out in the claims, which are an integral part of the present description .
Brief description of the drawings
Further objects and advantages of the present invention will become apparent from the following detailed description of an example of embodiment thereof and from the annexed drawings, which are only supplied by way of non-limiting example, wherein:
Figure 1 shows a flow chart of the method of the invention, according to a first variant thereof;
Figure 2 shows a flow chart of the method of the invention, according to a second variant thereof;
Figure 3 shows a flow chart of the method of the invention, according to a third variant thereof.
In the drawings, the same reference numerals and letters identify the same items or components.
Detailed description of some embodiments of the invention In accordance with the invention, the method for controlling the freezing phase in a single-control refrigeration appliance as defined above is such that it creates a freezing cycle called "super-freezer", aimed at speeding up the process of lowering the temperature of the food placed in the freezer compartment, e.g. from room temperature to a target temperature of -18 °C.
With reference to Figure 1, when the freezing cycle is activated (START SF) by the user, at the cycle start instant (t=0h) the compressor is turned on (Cps=ON) .
Said fan is then turned off (Fz fan = OFF) to stop air circulation from the freezer compartment to the refrigerator compartment, so as to not lose any cold from the freezer compartment.
A possible request for a temperature reduction from the refrigerator compartment, also referred to as Cold Request, is then preferably monitored (Fig. 2), which may occur in a per se known manner, based on the temperature Tfg in the refrigerator compartment, detected by the temperature sensor provided in the refrigerator compartment; for example, the Cold Request is activated (FG CR = ON) when the temperature Tfg rises above a threshold T5 and stays on until the temperature Tfg falls below a threshold T4; so long as the request remains active (FG CR = ON), the cycle duration is continuously monitored, while keeping the fan turned on (Fz fan = on) ; when said request stops, i.e. when the condition (FG CR = ON) is no longer verified, the fan is turned off.
The "super-freezer" freezing cycle has a predetermined duration, e.g. 24 h. The cycle checks that said duration is not exceeded (t>24h) ; if it is, the cycle will end (End SF) automatically. Otherwise, the cycle will continue.
Afterwards, the fan is turned off (Fz fan = off), so that no cooling air will circulate from the freezer compartment to the refrigerator compartment.
The state of the fan normally depends on the request for a temperature reduction in the refrigerator compartment .
Preferably, at this point the cycle checks again that its duration has not been exceeded (t>24h) , in which case the cycle will end (End SF) automatically. Otherwise, the cycle will continue. In addition (Fig. 2), a possible temperature reduction request from the refrigerator compartment is preferably monitored; if the request is
active (FG CR = ON), it will cause the fan to be turned on, thus returning to the step (Fz fan = on) of the cycle; the fan will stay on as long as said request remains active, i.e. as long as (FG CR = ON), and then the cycle will continue.
The cycle will go on for the predetermined duration on condition that the temperature of the evaporator TeVaP does not fall below a lower threshold Tl (NO result of the "Tevap < Tl ?" test) ; instead, if the temperature of the evaporator TeVaP falls below a lower threshold (TeVaP < Tl), then the fan will be turned on (Fz fan = on) and air will be circulated from the freezer to the refrigerator in order to prevent the evaporator from operating at an excessively low temperature, which would cause the generation of excessive frost on the evaporator. In this case, preferably, the cycle will afterwards check (Fig. 3) if the temperature in the refrigerator compartment Tfg < T3, i.e. if the temperature in the refrigerator compartment Tfg has become too low, such that said compartment could not tolerate any further temperature reduction, for the purpose of preventing icing.
If Tfg < T3, it means that the refrigeration appliance is in a condition wherein it is advantageous to not accumulate any additional cold neither in the refrigerator compartment nor in the freezer compartment, and hence the compressor will be turned off (Cps = off) ; otherwise, it will remain on.
Then, when the temperature of the evaporator Tevap exceeds a threshold T2 > Tl (TeVaP > T2), the fan will be turned off (returning to Fz fan = off) .
Otherwise, the cycle will continue for its maximum duration (t>24h) , after which it will end (End SF) automatically and the compressor will be turned off.
In summary, the steps of the method of the invention are
the following:
- user command that activates the function;
- the compressor is consequently turned on;
- if Tfg > T5, then the fan is preferably turned on (Fz fan ON) ; when Tfg < T4, then the fan is preferably turned off (Fz fan = OFF) ;
- if evap < Ti, then the fan is turned on (Fz fan ON) ;
- if Tevap > T2 and Tfg < T4, then the fan is turned off
(Fz fan OFF) ;
- if Tfg < T3, then the compressor is preferably turned off (Cps = off) ;
- T5 > T4 > T3 > T2 > Tl .
In a non-limiting sense, some possible values of the temperature thresholds are as follows:
Tl : -38 °C
T2 : -34 °C
T3 : + 0. 5 °C
T4 : + 3 °C
T5: + 6 °C
One example of embodiment of the device of the invention comprises a circuit that implements the steps of the method, which circuit is inserted into a single-control combined refrigeration appliance comprising the above- defined elements.
Said circuit may comprise per se known elements as described above, and also a computer program comprising coding means for implementing one or more steps of the method when said program is executed by a computer. It is therefore understood that the protection scope extends to said computer program as well as to computer-readable means that comprise a recorded message, said computer-readable means comprising program coding means for implementing one or more steps of the method when said program is executed
by a computer.
The above-described example of embodiment may be subject to variations without departing from the protection scope of the present invention, including all equivalent designs known to a man skilled in the art.
The elements and features illustrated herein may be combined together without however departing from the protection scope of the present invention.
The advantages deriving from the application of the present invention are apparent.
It substantially speeds up the cooling of the foods inserted in the freezer compartment in a simple and low- cost manner.
From the above description, those skilled in the art will be able to produce the object of the invention without introducing any further construction details.
Claims
1. A method for controlling a freezing phase in a refrigeration appliance of the single-control combined type, said refrigeration appliance comprising at least one refrigerator compartment, at least one freezer compartment, a single compressor, a temperature sensor detecting only the temperature in the refrigerator compartment, a temperature sensor detecting the temperature of the evaporator of the refrigeration circuit, a fan, the method being characterized in that it comprises the steps of:
- activating said freezing phase;
- the compressor is consequently turned on (Cps=on) ;
- if the temperature of the evaporator TeVaP < Tl, then said fan is turned on (Fz fan = ON) ;
- if the temperature of the evaporator TeVaP > T2, with T2 > Tl, then said fan is turned off (Fz fan = OFF) ;
- deactivating said freezing phase after a given time has elapsed following said activation.
2. A control method as claimed in claim 1, wherein, after said step of turning on the compressor (Cps=on) , said fan is turned off (Fz fan = OFF) .
3. A device for controlling a freezing phase in a refrigeration appliance of the single-control combined type, characterized in that it comprises means for implementing each one of the steps of the method of claim 1 or 2.
4. A refrigeration appliance of the single-control combined type, characterized in that it comprises a device as claimed in claim 3.
5. A computer program comprising program coding means adapted to implement the steps of claim 1 or 2 when said program is executed on a computer.
6. Computer-readable means comprising a recorded program, said computer-readable means comprising program
coding means adapted to implement the steps of claim 1 or 2 when said program is executed on a computer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT001093A ITTO20131093A1 (en) | 2013-12-31 | 2013-12-31 | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| PCT/IB2014/067055 WO2015101884A1 (en) | 2013-12-31 | 2014-12-18 | Method and device for controlling a freezing phase in a single-control combined refrigeration appliance, and related refrigeration appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3090221A1 true EP3090221A1 (en) | 2016-11-09 |
Family
ID=50239817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14830702.8A Withdrawn EP3090221A1 (en) | 2013-12-31 | 2014-12-18 | Method and device for controlling a freezing phase in a single-control combined refrigeration appliance, and related refrigeration appliance |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160327329A1 (en) |
| EP (1) | EP3090221A1 (en) |
| IT (1) | ITTO20131093A1 (en) |
| WO (1) | WO2015101884A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258449B (en) * | 2015-11-05 | 2018-04-20 | 青岛海尔股份有限公司 | Using the refrigerator and its control method of linear compressor |
| CN115247929B (en) * | 2021-04-26 | 2023-07-14 | 青岛海尔电冰箱有限公司 | Refrigerator and control method thereof |
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-
2014
- 2014-12-18 EP EP14830702.8A patent/EP3090221A1/en not_active Withdrawn
- 2014-12-18 WO PCT/IB2014/067055 patent/WO2015101884A1/en active Application Filing
- 2014-12-18 US US15/109,021 patent/US20160327329A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015101884A1 (en) | 2015-07-09 |
| US20160327329A1 (en) | 2016-11-10 |
| ITTO20131093A1 (en) | 2015-07-01 |
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