WO2010049287A2 - Kühlgerät sowie verfahren zur kühlraum-befeuchtung in einem kühlgerät - Google Patents
Kühlgerät sowie verfahren zur kühlraum-befeuchtung in einem kühlgerät Download PDFInfo
- Publication number
- WO2010049287A2 WO2010049287A2 PCT/EP2009/063573 EP2009063573W WO2010049287A2 WO 2010049287 A2 WO2010049287 A2 WO 2010049287A2 EP 2009063573 W EP2009063573 W EP 2009063573W WO 2010049287 A2 WO2010049287 A2 WO 2010049287A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- sorbent
- compressor
- refrigerator
- humidifying
- Prior art date
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
- F25D17/042—Air treating means within refrigerated spaces
-
- 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
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0413—Treating air flowing to refrigeration compartments by purification by humidification
Definitions
- the invention relates to a refrigerator with a refrigerator humidification device according to the preamble of claim 1 and a method for refrigerator humidification according to claim 17.
- the air in the cooling space of a cooling device is usually in direct contact with the evaporator of a refrigerant circuit.
- the evaporator has very low surface temperatures, which lead to an immediate condensation of the humidity.
- the condensed air humidity freezes on the evaporator surface and is thus permanently bound. In occasional defrosting the ice is melted and discharged to the outside. For humidification of the cooling air this condensation is therefore not available.
- the humidity in the refrigerator is therefore extremely low.
- a cooling device known from US Pat. No. 5,042,266 has a humidifying device.
- the moistening device provided within the cooling space operates with a reversibly dehydratable sorbent which releases moisture into the cooling chamber when heat is applied.
- the sorbent is flowed through in an adsorption process with ambient air of high humidity, whereby the sorbent of the ambient air extracts an amount of water and stores them.
- the cold room air is humidified.
- the cooling-chamber air flows through the sorbent while applying heat. With the heated cooling air, the amount of water stored in the sorbent is released as water vapor and fed into the cold room.
- For the application of heat to the sorbent is preceded by a heating element which heats the cooling space air flow during the desorption process energy consuming.
- the object of the present invention is to provide a cooling device or a method for cooling room humidification of a cooling device, in which the cooling space humidification takes place with reduced energy expenditure.
- the object is solved by the features of claim 1 or claim 17. Preferred embodiments of the invention are disclosed in the subclaims.
- the sorbent is arranged outside the cooling space of the refrigerator. In this way it is achieved that no heat source for heating the sorbent is to be provided within the cooling space. Accordingly, according to the invention, the cooling capacity required for cooling the cooling space can be reduced. In addition, compared to the state of
- the sorption of the humidifier may be integrated in a separate humidification circuit, which is fluidly connected at least via an air inlet and an air outlet with the cooling chamber of the cooling device.
- a separate humidification circuit which is fluidly connected at least via an air inlet and an air outlet with the cooling chamber of the cooling device.
- the moisturizing outside air can be supplied to the humidification circuit.
- the moisture-laden ambient air can not be supplied directly to the humidification circuit, but according to one aspect of the invention with the refrigerator door open across the cold room and the air inlet of the humidifier.
- the closed humidification circuit can have additional inlets and / or outlets, via which the humidifying circuit can be directly connected to the environment. In this way, the humidified ambient air can be fed directly to the humidifying circuit without having to open the refrigerator door.
- a delivery fan can be provided in the humidification circuit, whereby the air flow guided through the sorbent is accelerated.
- the delivery blower can be selectively activated or deactivated by a control device, depending on whether an adsorption process or desorption process is to take place.
- further flow elements such as rotary valves or the like, can be arranged in the humidification circuit, which open or block flow paths in the humidification circuit.
- the sorbent may be thermally coupled to a compressor connected in the refrigerant circuit.
- the compressor is part of a refrigerant circuit known per se, in which also the refrigerator cooling the evaporator is connected.
- a heat transfer circuit may be connected, with which the compressor waste heat is transferred to the sorbent.
- the heat transfer circuit may preferably be closed.
- a heating agent for example, water is suitable.
- a heat exchanger may be provided, with which the waste heat can be transferred directly into the sorbent.
- the sorbent may be exemplified as a sorbent column having reversibly dehydrogenatable material disposed therein.
- the sorption column can on the one hand be flowed through by a cooling air flow.
- the above-mentioned heat exchanger of the heat transferring circuit may be arranged.
- the compressor may be brought into direct thermal contact with the sorbent. In this way, the compressor can transfer the waste heat to the sorbent without heat loss.
- a humidification circuit closed to the environment can be provided.
- the controller may start the adsorption process in which the sorbent receives the moisture-laden ambient air entering the refrigerator compartment.
- the delivery fan can be switched on, whereby the ambient air flowing into the cooling space is sucked into the humidification circuit.
- the controller can turn off the compressor during the adsorption process.
- the control device can be assigned a door opening sensor that simply detects an opening or closing of the appliance door and correspondingly passes a door operating signal to the control device.
- the conveyor fan can run for a specified time interval, for approx. 1 min.
- the control device may preferably disable the compressor of the refrigerant circuit. In this way it is achieved that, on the one hand, no heat is applied to the sorbent by compressor waste heat, whereby the adsorption process is not impaired.
- the compressor is switched off, the evaporator temperature is correspondingly increased, so that less atmospheric moisture condenses out at the condensation surface provided by the evaporator.
- the desorption process is carried out, which according to the invention is coupled to the running times of the compressor.
- the heated sorbent in turn releases moisture which can be introduced into the cooling space when the fan blower is activated.
- the desorption process is therefore divided into separate desorption time intervals, which essentially correspond to the runtime intervals of the compressor.
- a timing of the running times of the compressor and the fan blower is important. It has proven to be advantageous, the fan blower at the end of the Compressor and / or during the life of the compressor to activate. In this way it is ensured that at least partially the refrigerant circuit is switched off when humid air flows into the cooling space. This avoids that moist air flowing into the cooling chamber is deposited directly on the evaporator surface.
- Figure 1 is a perspective schematic diagram of a refrigerator according to the first embodiment.
- FIG. 2 shows an operating time diagram which shows the transit times of the conveying blower or of the compressor of the cooling device
- FIG. 3 in a view corresponding to FIG. 2, a cooling device according to the second embodiment.
- a refrigerator with a cooling space 1 is shown.
- the refrigerator 1 is closed at the front with a door 3.
- an evaporator 7 of a refrigerant circuit is provided on the rear wall 5 of the cooling space 1.
- the cooling space 1 has a cooling compartment 11 separated by partitions 9.
- a compressor 13 is connected in a known manner in addition to the evaporator 7, which leads the refrigerant via an expansion valve 15 into the evaporator 7.
- the cooling device shown in FIG. 1 is also assigned a humidifying device 17, with which the cooling compartment 1 1 can be specifically and actively fed humidity.
- the cooling space 1 is connected via an air inlet 19 to an inlet channel 21 of the moistening device 17.
- the inlet channel 21 opens into a sorption column 23 which contains a reversibly de-hydrolyzable material which can absorb moisture from the air at low temperatures and release this moisture at higher temperatures.
- the sorption column 23 is at its outlet Lassseite coupled with a conveyor fan 25 which is connected via an outlet channel 27 with an opening into the cooling compartment 11 air outlet 29.
- the evaporator 13 of the refrigerant circuit is thermally coupled via a heat transfer circuit W with the material obtained in the sorption column 23.
- the waste heat generated during a compressor operation is fed into the sorption column 23, whereby the therein provided reversibly de-hydrolyzable material releases the stored moisture.
- the moistening of the cooling chamber air is controlled in the embodiment of FIG. 1 by means of a control device 31.
- the control device is shown in FIG. 1 via dashed lines signal lines 33 in signal communication with a door actuation sensor 35 which detects an actuation of the door 3 and a corresponding door actuation signal T s to the control device 31 passes.
- the control device 31 Upon detection of the door operating signal T s , the control device 31 starts an adsorption process ⁇ t A , as shown in the diagram of FIG. During the adsorption process .DELTA.t A, the controller 31 activates the blower fan 25. Therefore, the inflowing when the door is opened 3 in the refrigerator 1, moisture-laden ambient air via the air inlet 19, and the intake passage is passed through the sorption column 23 21st At the same time, the control device 31 keeps the compressor 13 of the refrigerant circuit out of operation during the entire adsorption process ⁇ t A. The sorption column 23 is therefore not heated by means of compressor waste heat for effective adsorption at low temperatures.
- the adsorption ⁇ t A extends between the times t 0 , at which the door operating signal T 3 is detected, and the time t.
- the compressor 13 is again controlled in the usual way to keep the refrigerator 1 at a predetermined refrigerator temperature.
- the adsorption ⁇ t A can after closing the door 3 about 1 min. last for.
- the sorption column 23 can absorb the moisture contained in the cooling space air during this time interval and store it.
- the desorption ⁇ t D is coupled according to the invention with the running times of the compressor 13.
- the released moisture can be introduced by re-switching the fan blower 25 via the outlet channel 27 into the cooling compartment 11.
- the running times of the fan blower 25 can be controlled during the desorption phase ⁇ t D in such a way that the fan blower 25 is activated, in particular at the end of the runtime of the compressor 13 and / or immediately after the run time, ie already during the service life of the compressor. In this way, it is ensured that, when humid air flows into the refrigerating compartment 11, the refrigerant circuit is at least partially shut down, whereby a direct condensing out of the supplied moist air at the evaporator surface can be avoided.
- FIG. 3 a refrigerator according to the second embodiment is shown.
- the refrigeration device according to FIG. 3 largely corresponds in construction and mode of operation to the refrigeration device shown in FIG. 1. In this respect, reference is made to its description.
- the humidifying circuit B of the humidifying device 17 is not closed towards the outside, but has additional inlet and outlet openings 37, 38, via which the humidifying circuit B can be fluidly connected directly to the environment without the interposition of the cooling space 1 .
- the additional inlet 37 can be fluidically connected to the sorption column 23 by appropriate switching of a flow flap 39 provided in the humidification circuit B.
- the sorption column 23 can be connected on the input side to the cooling space 1 or directly to the environment.
- the fan blower 25 is also followed by a flow flap 41, depending on the switching position, the fan blower 25th On the output side with the environment or with the cooling chamber 1 fluidly connects.
- the two flow flaps 39, 41 can be actuated by the control device 31. In this way, the adsorption ⁇ t A can be done independently of a door opening.
- the flow flaps 39, 41 are moved by the control device 31 into the switching position shown in FIG. 3 and the fan blower 25 is activated.
- the compressor 13 is deactivated.
- the moisture-laden outside air is passed through the additional air inlet 37 through the sorption column 23, in which the reversibly dehydratable material absorbs the moisture of the air, so that comparatively dry air is recycled via the additional air outlet 38 back into the environment.
- the desorption process .DELTA.t D can, as already described with reference to FIGS. 1 and 2 take place.
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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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Drying Of Gases (AREA)
- Central Air Conditioning (AREA)
- Air Conditioning Control Device (AREA)
- Air Humidification (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011117101/13A RU2011117101A (ru) | 2008-10-27 | 2009-10-16 | Холодильный аппарат и способ увлажнения холодильного отделения в холодильном аппарате |
EP09737410A EP2344818B1 (de) | 2008-10-27 | 2009-10-16 | Kühlgerät sowie verfahren zur kühlraum-befeuchtung in einem kühlgerät |
CN200980142969XA CN102216705A (zh) | 2008-10-27 | 2009-10-16 | 制冷器具和用于对制冷器具中的冷却区进行增湿的方法 |
ES09737410T ES2389470T3 (es) | 2008-10-27 | 2009-10-16 | Aparato de refrigeración así como procedimiento para la humidificación de la cámara de refrigeración en un aparato de refrigeración |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008043188.5 | 2008-10-27 | ||
DE200810043188 DE102008043188A1 (de) | 2008-10-27 | 2008-10-27 | Kühlgerät sowie Verfahren zur Kühlraum-Befeuchtung in einem Kühlgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010049287A2 true WO2010049287A2 (de) | 2010-05-06 |
WO2010049287A3 WO2010049287A3 (de) | 2010-07-08 |
Family
ID=42054861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/063573 WO2010049287A2 (de) | 2008-10-27 | 2009-10-16 | Kühlgerät sowie verfahren zur kühlraum-befeuchtung in einem kühlgerät |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2344818B1 (de) |
CN (1) | CN102216705A (de) |
DE (1) | DE102008043188A1 (de) |
ES (1) | ES2389470T3 (de) |
RU (1) | RU2011117101A (de) |
WO (1) | WO2010049287A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106288049A (zh) * | 2016-10-31 | 2017-01-04 | 广东美的制冷设备有限公司 | 一种空调加湿系统及控制方法 |
WO2019216312A1 (ja) | 2018-05-07 | 2019-11-14 | ダイキン工業株式会社 | 加湿装置及び空気組成調節装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042266A (en) | 1987-10-27 | 1991-08-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Refrigerating and humidity-regulating system for use in a container |
JPH03217779A (ja) | 1990-01-23 | 1991-09-25 | Sanyo Electric Co Ltd | 高湿度冷蔵庫 |
-
2008
- 2008-10-27 DE DE200810043188 patent/DE102008043188A1/de not_active Withdrawn
-
2009
- 2009-10-16 CN CN200980142969XA patent/CN102216705A/zh active Pending
- 2009-10-16 RU RU2011117101/13A patent/RU2011117101A/ru not_active Application Discontinuation
- 2009-10-16 EP EP09737410A patent/EP2344818B1/de active Active
- 2009-10-16 WO PCT/EP2009/063573 patent/WO2010049287A2/de active Application Filing
- 2009-10-16 ES ES09737410T patent/ES2389470T3/es active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042266A (en) | 1987-10-27 | 1991-08-27 | Mitsubishi Jukogyo Kabushiki Kaisha | Refrigerating and humidity-regulating system for use in a container |
JPH03217779A (ja) | 1990-01-23 | 1991-09-25 | Sanyo Electric Co Ltd | 高湿度冷蔵庫 |
Also Published As
Publication number | Publication date |
---|---|
RU2011117101A (ru) | 2012-12-10 |
EP2344818B1 (de) | 2012-08-08 |
DE102008043188A1 (de) | 2010-04-29 |
EP2344818A2 (de) | 2011-07-20 |
WO2010049287A3 (de) | 2010-07-08 |
CN102216705A (zh) | 2011-10-12 |
ES2389470T3 (es) | 2012-10-26 |
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