US20110232309A1 - Refrigerating appliance - Google Patents
Refrigerating appliance Download PDFInfo
- Publication number
- US20110232309A1 US20110232309A1 US13/155,428 US201113155428A US2011232309A1 US 20110232309 A1 US20110232309 A1 US 20110232309A1 US 201113155428 A US201113155428 A US 201113155428A US 2011232309 A1 US2011232309 A1 US 2011232309A1
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- United States
- Prior art keywords
- compressor
- refrigerant
- collecting receptacle
- condensed water
- collecting
- 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.)
- Abandoned
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Classifications
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
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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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/141—Removal by evaporation
- F25D2321/1411—Removal by evaporation using compressor heat
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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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/141—Removal by evaporation
- F25D2321/1413—Removal by evaporation using heat from electric elements or using an electric field for enhancing removal
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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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/144—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans
- F25D2321/1442—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans outside a refrigerator
Definitions
- This invention relates to a refrigerating appliance with a collecting or evaporation receptacle for condensed water.
- a refrigerating appliance is disclosed in DE 198 55 504 A1.
- This refrigerating appliance of prior art has a heat insulating housing which encloses a storage compartment for goods to be refrigerated and has, in a lower corner, a recess open towards the outside in which a compressor is installed for a refrigerant circuit of the refrigerating appliance.
- a collecting receptacle is mounted on the compressor housing for condensed water which condenses in the storage compartment and flows out through an opening formed above the collecting receptacle in the housing into the collecting receptacle.
- the collecting receptacle is mounted on the compressor housing in order to utilise loss heat which the compressor generates during operation, and to heat the condensed water in the collecting receptacle, thereby accelerating its evaporation.
- the object of this invention is to provide a refrigerating appliance in which overflowing of the collecting tray can be reliably avoided, even if waste heat discharged from the compressor to the drip tray is low.
- the object is achieved by a refrigerating appliance with the features of the claims.
- the heating power supplied to the collecting tray can be supplemented by means of the independent heating device to the extent required to prevent overflowing.
- the heating device is preferably formed essentially by an ohmic resistance.
- the heating device can be arranged simply on a wall of the collecting receptacle; in order to introduce the thermal energy discharged by it into the condensed water contained in the collecting receptacle with the lowest possible loss, the heating device is preferably arranged so that it is immersed in the collecting receptacle.
- a control circuit may be provided for operating the heating device periodically. If the ratio of the operating time of the heating device to the total operating time of the refrigerating appliance can be adjusted on the control circuit, the mean heating power may always be limited to the minimum required to prevent overflow, according to the climatic conditions under which the refrigerating appliance is used.
- a door opening sensor is provided on a door of the refrigerating appliance, and a control circuit connected to the door opening sensor controls the average power of the heating device according to the frequency of the recorded door openings.
- This embodiment is based on the consideration that a certain quantity of moisture is introduced into the refrigerating appliance whenever the door is opened due to the air exchange between the storage compartment of the refrigerating appliance and its surroundings, and that this moisture eventually reaches the collecting receptacle as condensed water, and must be evaporated from it so that the heat energy required for this must be supplied.
- a water level sensor is arranged on the collecting receptacle and a control circuit connected to the water level sensor operates the heating device if the water level recorded by the water level sensor exceeds a limit value.
- heat energy is actually only expended when this is required to prevent overflow; here there are no safety margins which are required in the case of purely time-controlled operation of the heating device or operation of the heating device controlled on the basis of the frequency of the door openings in order to allow for fluctuations in the climatic conditions or the emission of moisture by goods to be refrigerated and stored in the refrigerating appliance.
- the water level sensor is preferably formed by a float switch.
- FIG. 1 shows a diagrammatic section through a refrigerating appliance according to the invention
- FIG. 2 shows a compressor with a collecting receptacle mounted therein, according to a first embodiment of the invention
- FIG. 3 shows a compressor with a collecting receptacle according to a second embodiment of the invention.
- FIG. 4 shows a diagrammatic section through a collecting receptacle with a float switch.
- the refrigerating appliance shown diagrammatically in FIG. 1 in section comprises a heat insulating housing with a body 1 and a door 2 articulated to it, which enclose a storage compartment 3 .
- An evaporator 5 is arranged on the rear side of storage compartment 3 divided into drawers by a plurality of draw bottoms 4 .
- evaporator 5 is represented as a plate-shaped body which is inserted between a wall of the insulating receptacle of body 1 bounding interior space 3 , and an insulating foam filling 6 .
- a refrigerant circuit extends from a high pressure outlet of a compressor 7 via a liquefier 8 fitted on the outside of the rear of body 1 and evaporator 5 to a suction connection of compressor 7 .
- Compressor 7 is installed in a recess 9 close to the bottom on the rear side of body 1 below evaporator 5 .
- Air moisture from interior space 3 which condenses on its wall cooled by evaporator 5 , is accumulated on the lower edge of this wall in a gutter 10 and is fed from there via a drain pipe 11 guided through foam filling 6 to a bowl-shaped collecting receptacle 12 , which is mounted on compressor 7 in order to be heated by its waste heat.
- the air moisture produced by evaporation from collecting receptacle 12 in recess 9 is flushed away by an air flow which, driven by the heat discharged by liquefier 8 in a flue between the rear wall of body 1 and an opposing cabinet or building wall, not shown, runs firstly through an intake duct 30 guided along the bottom of body 1 , then through recess 9 and finally via the flue and into the open air.
- FIG. 2 shows a perspective view of a special embodiment of the upper section of compressor 7 and collecting receptacle 12 mounted on it.
- collecting receptacle 12 has in its bottom 13 an opening into which an upper section of the housing of compressor 7 is inserted so that it is sealed.
- the water in collecting receptacle 12 therefore comes into direct contact with the housing of compressor 7 , so that the waste heat discharged by compressor 7 in operation is absorbed with high efficiency from the condensed water.
- FIG. 2 By inserting upper housing section 14 directly into bottom 13 it is possible, as shown in FIG. 2 , unlike the diagrammatic representation in FIG. 1 , to lead a pressure connection 15 and suction connection 16 of compressor 7 through collecting receptacle 12 and condensed water contained in it.
- Suction connection 16 through which flows expanded, cold refrigerant coming from evaporator 5 , is provided with an insulating jacket; pressure connection 15 , through which flows compressed, warm refrigerant to liquefier 8 , is not insulated, so that heat from the refrigerant can also be dissipated to the condensed water.
- a further pipe section may be provided between pressure connection 15 and liquefier 8 , which section runs in the manner of a loop or meanders through the condensed water.
- An electrically operating heating rod 17 is immersed from above into collecting receptacle 12 , and extends in it in the form of a loop. It is supplied with energy by a control circuit 18 (see FIG. 1 ).
- control circuit 18 comprises a timer, which switches heating rod 17 on and off for a fixed period.
- the proportion of the connection time of each period may in the simplest case also be fixed, since in the case of a refrigerator used in a hot environment, the quantity of liquid which is introduced into storage compartment 3 whenever the door is opened, and which must ultimately be evaporated in collecting receptacle 12 , is indeed greater than in the case of a refrigerator used in a cold environment.
- the proportion of the compressor running time of the total operating time of the refrigerator is also higher in a hot environment than in a cold one, with the result that more waste heat from compressor 7 is also available for evaporation.
- the length of operating phases 17 may also be adjusted on control circuit 18 to take account of the influence of the ambient climate, or other ambient factors that vary from one appliance to another, on the condensed water produced.
- a door opening sensor 19 is connected to control circuit 18 .
- This sensor may, for example, be a magnetic field sensor subjected to the magnetic field of a magnetic seal of door 2 , or simply a switch which is normally provided on each refrigerating appliance for switching the interior lighting of storage compartment 3 on and off, depending on the opening condition of door 2 .
- Control circuit 18 counts the door opening processes recorded by this door opening sensor 19 and switches on heating rod 17 after a predetermined number of recorded door openings for a predetermined period of time which is preset by the manufacturer so that the waste heat from compressor 7 , together with the quantity of heat given off by heating rod 17 , would have to be sufficient to evaporate an estimated quantity of moisture introduced by the door openings.
- sensor circuit 18 is instead connected to a door opening sensor with a water level sensor 20 fitted on collecting receptacle 12 .
- FIG. 4 shows, in a diagrammatic section, collecting receptacle 12 provided with such a water level sensor 20 .
- Water level sensor 20 is here designed as a float switch, with an electrical switch 22 that can be actuated by an elongated arm 21 , and a floating body 23 immersed in the condensed water of collecting receptacle 12 fitted on the free end of arm 21 . If the water level in collecting receptacle 12 exceeds a critical value, switch 22 closes and heating rod 17 is supplied with electrical energy until water level 24 drops below the critical value again.
- FIG. 3 shows a further embodiment of collecting receptacle 12 mounted on upper section 14 of the housing of compressor 7 . Whilst upper housing section 14 is shown in a perspective view, collecting receptacle 12 is shown half in section in order to show a heating wire 25 which is fitted in a plurality of windings to the inner face of collecting receptacle 12 . Since heating wire 25 is supported by collecting receptacle 12 , it need not be as rigid as heating bar 17 .
- Collecting receptacle 12 can here be provided on its outside with an insulation coating (not shown) to ensure that heat dissipated by heating wire 25 is fully absorbed by the condensed water in collecting receptacle 12 and is not lost to the surrounding atmosphere through the outer faces of collecting receptacle 12 .
- a temperature sensor 26 fitted to the inside of collecting receptacle 12 , in the vicinity of heating wire 25 serves as a sensor for the water level in collecting receptacle 12 .
- the temperature recorded by temperature sensor 26 depends on whether it, and regions of heating resistance 25 adjacent to it, lie below the water level or not. If the temperature recorded by this sensor 26 during the operation of heating wire 25 exceeds an empirically established limit value, it may be concluded from this that these regions of heating wire 25 adjacent to temperature sensor 26 are not immersed in the condensed water, and that consequently it is not necessary to operate heating wire 25 .
- a control circuit 18 connected to temperature sensor 26 can, from time to time, put heating wire 25 into operation for test purposes in order to evaluate the resistance in collecting receptacle 12 on the basis of the heating of temperature sensor 26 , and if the evaluation indicates that the water level is not critical, the operation of heating wire 25 is interrupted again immediately. Otherwise its operation is continued, if necessary with an output that is higher than in the preceding test phase, until the water level has dropped below a critical value and this is reflected in a rise in the temperature recorded by sensor 26 .
- Such a temperature sensor 26 could also be secured directly to heating rod 17 in the embodiment shown in FIGS. 2 and 4 . It is also conceivable to use heating wire 25 or heating rod 17 itself as a temperature sensor if its heating resistance has a temperature-dependent resistance value whose measurement by control circuit 18 indicates whether heating wire 25 or heating rod 17 has been cooled by condensed water or not.
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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)
- Removal Of Water From Condensation And Defrosting (AREA)
Abstract
A refrigerating appliance comprising a storage compartment, a refrigerant circuit which serves to cool the storage compartment and contains a compressor, and comprising a collecting receptacle for condensed water flowing out of the storage compartment. The collecting receptacle can be heated by a heating device that can be independently operated by the operation of the compressor.
Description
- This application is a Divisional, under 35 U.S.C. §121, of U.S. application Ser. No. 10/592,970, filed Jun. 25, 2008, which is a U.S. national stage application under 35 U.S.C. §371 of PCT/EP2005/051136, filed Mar. 14, 2005, which designated the United States; this application also claims the priority, under 35 U.S.C. §119, to German Application No. 10 2004 012 498.1, filed Mar. 15, 2004.
- This invention relates to a refrigerating appliance with a collecting or evaporation receptacle for condensed water. A refrigerating appliance is disclosed in DE 198 55 504 A1. This refrigerating appliance of prior art has a heat insulating housing which encloses a storage compartment for goods to be refrigerated and has, in a lower corner, a recess open towards the outside in which a compressor is installed for a refrigerant circuit of the refrigerating appliance. A collecting receptacle is mounted on the compressor housing for condensed water which condenses in the storage compartment and flows out through an opening formed above the collecting receptacle in the housing into the collecting receptacle.
- The collecting receptacle is mounted on the compressor housing in order to utilise loss heat which the compressor generates during operation, and to heat the condensed water in the collecting receptacle, thereby accelerating its evaporation.
- In recent years considerable efforts have been made to reduce the energy consumption of refrigerating appliances, as a result of which the power input which the compressor must have in order to cool the storage compartment effectively is being increasingly reduced with advanced development. In modern refrigerating appliances with high quality insulation it may therefore happen that the waste heat from the compressor is no longer sufficient to evaporate the condensed water at the rate at which it flows out of the storage compartment, so that the collecting receptacle eventually overflows. If the overflowing condensed water reaches live parts below the drip tray, damage to the electrics of the refrigerating appliance may result. Condensed water escaping from the appliance may also lead to damage elsewhere, particularly in the case of built-in appliances which are provided for installation in kitchen cabinets. Problems of this kind may arise, particularly in the case of self-defrosting appliances in which the condensed water is produced in pulses in large quantities.
- The object of this invention is to provide a refrigerating appliance in which overflowing of the collecting tray can be reliably avoided, even if waste heat discharged from the compressor to the drip tray is low.
- The object is achieved by a refrigerating appliance with the features of the claims. The heating power supplied to the collecting tray can be supplemented by means of the independent heating device to the extent required to prevent overflowing.
- The heating device is preferably formed essentially by an ohmic resistance.
- The heating device can be arranged simply on a wall of the collecting receptacle; in order to introduce the thermal energy discharged by it into the condensed water contained in the collecting receptacle with the lowest possible loss, the heating device is preferably arranged so that it is immersed in the collecting receptacle.
- A control circuit may be provided for operating the heating device periodically. If the ratio of the operating time of the heating device to the total operating time of the refrigerating appliance can be adjusted on the control circuit, the mean heating power may always be limited to the minimum required to prevent overflow, according to the climatic conditions under which the refrigerating appliance is used.
- According to a preferred embodiment a door opening sensor is provided on a door of the refrigerating appliance, and a control circuit connected to the door opening sensor controls the average power of the heating device according to the frequency of the recorded door openings. This embodiment is based on the consideration that a certain quantity of moisture is introduced into the refrigerating appliance whenever the door is opened due to the air exchange between the storage compartment of the refrigerating appliance and its surroundings, and that this moisture eventually reaches the collecting receptacle as condensed water, and must be evaporated from it so that the heat energy required for this must be supplied.
- According to a particularly economic embodiment a water level sensor is arranged on the collecting receptacle and a control circuit connected to the water level sensor operates the heating device if the water level recorded by the water level sensor exceeds a limit value. In this embodiment heat energy is actually only expended when this is required to prevent overflow; here there are no safety margins which are required in the case of purely time-controlled operation of the heating device or operation of the heating device controlled on the basis of the frequency of the door openings in order to allow for fluctuations in the climatic conditions or the emission of moisture by goods to be refrigerated and stored in the refrigerating appliance.
- The water level sensor is preferably formed by a float switch.
- Further features and advantages of the invention are explained in the following description of exemplary embodiments, with reference to the attached figures, where:
-
FIG. 1 shows a diagrammatic section through a refrigerating appliance according to the invention; -
FIG. 2 shows a compressor with a collecting receptacle mounted therein, according to a first embodiment of the invention; -
FIG. 3 shows a compressor with a collecting receptacle according to a second embodiment of the invention; and -
FIG. 4 shows a diagrammatic section through a collecting receptacle with a float switch. - The refrigerating appliance shown diagrammatically in
FIG. 1 in section comprises a heat insulating housing with a body 1 and adoor 2 articulated to it, which enclose astorage compartment 3. Anevaporator 5 is arranged on the rear side ofstorage compartment 3 divided into drawers by a plurality ofdraw bottoms 4. Hereevaporator 5 is represented as a plate-shaped body which is inserted between a wall of the insulating receptacle of body 1 boundinginterior space 3, and aninsulating foam filling 6. A refrigerant circuit extends from a high pressure outlet of acompressor 7 via aliquefier 8 fitted on the outside of the rear of body 1 andevaporator 5 to a suction connection ofcompressor 7.Compressor 7 is installed in arecess 9 close to the bottom on the rear side of body 1 belowevaporator 5. - Air moisture from
interior space 3, which condenses on its wall cooled byevaporator 5, is accumulated on the lower edge of this wall in agutter 10 and is fed from there via adrain pipe 11 guided through foam filling 6 to a bowl-shaped collecting receptacle 12, which is mounted oncompressor 7 in order to be heated by its waste heat. - The air moisture produced by evaporation from collecting
receptacle 12 inrecess 9 is flushed away by an air flow which, driven by the heat discharged byliquefier 8 in a flue between the rear wall of body 1 and an opposing cabinet or building wall, not shown, runs firstly through anintake duct 30 guided along the bottom of body 1, then throughrecess 9 and finally via the flue and into the open air. -
FIG. 2 shows a perspective view of a special embodiment of the upper section ofcompressor 7 and collectingreceptacle 12 mounted on it. Here collectingreceptacle 12 has in itsbottom 13 an opening into which an upper section of the housing ofcompressor 7 is inserted so that it is sealed. The water in collectingreceptacle 12 therefore comes into direct contact with the housing ofcompressor 7, so that the waste heat discharged bycompressor 7 in operation is absorbed with high efficiency from the condensed water. - By inserting
upper housing section 14 directly intobottom 13 it is possible, as shown inFIG. 2 , unlike the diagrammatic representation inFIG. 1 , to lead apressure connection 15 andsuction connection 16 ofcompressor 7 through collectingreceptacle 12 and condensed water contained in it.Suction connection 16, through which flows expanded, cold refrigerant coming fromevaporator 5, is provided with an insulating jacket;pressure connection 15, through which flows compressed, warm refrigerant to liquefier 8, is not insulated, so that heat from the refrigerant can also be dissipated to the condensed water. To reinforce this effect a further pipe section (not shown in the figure) may be provided betweenpressure connection 15 andliquefier 8, which section runs in the manner of a loop or meanders through the condensed water. - An electrically operating
heating rod 17 is immersed from above into collectingreceptacle 12, and extends in it in the form of a loop. It is supplied with energy by a control circuit 18 (seeFIG. 1 ). - According to a simple
embodiment control circuit 18 comprises a timer, which switchesheating rod 17 on and off for a fixed period. The proportion of the connection time of each period may in the simplest case also be fixed, since in the case of a refrigerator used in a hot environment, the quantity of liquid which is introduced intostorage compartment 3 whenever the door is opened, and which must ultimately be evaporated in collectingreceptacle 12, is indeed greater than in the case of a refrigerator used in a cold environment. At the same time, however, the proportion of the compressor running time of the total operating time of the refrigerator is also higher in a hot environment than in a cold one, with the result that more waste heat fromcompressor 7 is also available for evaporation. However, the length ofoperating phases 17 may also be adjusted oncontrol circuit 18 to take account of the influence of the ambient climate, or other ambient factors that vary from one appliance to another, on the condensed water produced. - According to a second further developed embodiment a
door opening sensor 19 is connected tocontrol circuit 18. This sensor may, for example, be a magnetic field sensor subjected to the magnetic field of a magnetic seal ofdoor 2, or simply a switch which is normally provided on each refrigerating appliance for switching the interior lighting ofstorage compartment 3 on and off, depending on the opening condition ofdoor 2.Control circuit 18 counts the door opening processes recorded by thisdoor opening sensor 19 and switches onheating rod 17 after a predetermined number of recorded door openings for a predetermined period of time which is preset by the manufacturer so that the waste heat fromcompressor 7, together with the quantity of heat given off byheating rod 17, would have to be sufficient to evaporate an estimated quantity of moisture introduced by the door openings. - In a third further developed
embodiment sensor circuit 18 is instead connected to a door opening sensor with awater level sensor 20 fitted on collectingreceptacle 12.FIG. 4 shows, in a diagrammatic section, collectingreceptacle 12 provided with such awater level sensor 20.Water level sensor 20 is here designed as a float switch, with anelectrical switch 22 that can be actuated by anelongated arm 21, and a floatingbody 23 immersed in the condensed water of collectingreceptacle 12 fitted on the free end ofarm 21. If the water level in collectingreceptacle 12 exceeds a critical value, switch 22 closes andheating rod 17 is supplied with electrical energy untilwater level 24 drops below the critical value again. -
FIG. 3 shows a further embodiment of collectingreceptacle 12 mounted onupper section 14 of the housing ofcompressor 7. Whilstupper housing section 14 is shown in a perspective view, collectingreceptacle 12 is shown half in section in order to show aheating wire 25 which is fitted in a plurality of windings to the inner face of collectingreceptacle 12. Sinceheating wire 25 is supported by collectingreceptacle 12, it need not be as rigid asheating bar 17. Collectingreceptacle 12 can here be provided on its outside with an insulation coating (not shown) to ensure that heat dissipated byheating wire 25 is fully absorbed by the condensed water in collectingreceptacle 12 and is not lost to the surrounding atmosphere through the outer faces of collectingreceptacle 12. - A
temperature sensor 26 fitted to the inside of collectingreceptacle 12, in the vicinity ofheating wire 25, here serves as a sensor for the water level in collectingreceptacle 12. When the heating wire is in operation the temperature recorded bytemperature sensor 26 depends on whether it, and regions ofheating resistance 25 adjacent to it, lie below the water level or not. If the temperature recorded by thissensor 26 during the operation ofheating wire 25 exceeds an empirically established limit value, it may be concluded from this that these regions ofheating wire 25 adjacent totemperature sensor 26 are not immersed in the condensed water, and that consequently it is not necessary to operateheating wire 25. In other words, in this embodiment acontrol circuit 18 connected totemperature sensor 26 can, from time to time, putheating wire 25 into operation for test purposes in order to evaluate the resistance in collectingreceptacle 12 on the basis of the heating oftemperature sensor 26, and if the evaluation indicates that the water level is not critical, the operation ofheating wire 25 is interrupted again immediately. Otherwise its operation is continued, if necessary with an output that is higher than in the preceding test phase, until the water level has dropped below a critical value and this is reflected in a rise in the temperature recorded bysensor 26. - Such a
temperature sensor 26 could also be secured directly toheating rod 17 in the embodiment shown inFIGS. 2 and 4 . It is also conceivable to useheating wire 25 orheating rod 17 itself as a temperature sensor if its heating resistance has a temperature-dependent resistance value whose measurement bycontrol circuit 18 indicates whetherheating wire 25 orheating rod 17 has been cooled by condensed water or not.
Claims (7)
1. A refrigerator comprising:
a body at least partially defining a storage compartment;
a refrigerant circuit defining a flow path for refrigerant and cooling the storage compartment and including a compressor;
a collecting receptacle collecting condensed water from the storage compartment;
a heating device heating the collecting receptacle;
a sensor detecting an operating parameter of the refrigerator; and
a control circuit connected to the sensor and controlling the heating device in response to the operating parameter detected by the sensor.
2. The refrigerating appliance according to claim 1 , wherein the heating device and the compressor are operated independently from one another.
3. The refrigerating appliance according to claim 1 , wherein the compressor includes an upper housing section forming at least a portion of the collecting receptacle, condensed water within the collecting receptacle contacting the upper housing section and absorbing waste heat from the compressor.
4. The refrigerating appliance according to claim 3 , wherein the refrigerant circuit includes:
a liquefier receiving compressed relatively warm refrigerant from the compressor; and
a pressure connection connected to the upper housing portion of the compressor and carrying refrigerant from the compressor to the liquefier, the pressure connection passing through the collecting receptacle and heat from the refrigerant being dissipated to the condensed water in the collecting receptacle.
5. The refrigerating appliance according to claim 3 , wherein the refrigerant circuit includes:
a evaporator providing expanded relatively cold refrigerant to the compressor; and
a suction connection connected to the compressor and carrying refrigerant from the evaporator to the compressor, the suction connection passing through the collecting receptacle and having an insulating jacket surrounding the suction connection within the collection receptacle to insulate the refrigerant from the condensed water in the collecting receptacle.
6. A refrigerator comprising:
a body at least partially defining a storage compartment;
a collecting receptacle collecting condensed water from the storage compartment;
a refrigerant circuit defining a flow path for refrigerant and cooling the storage compartment and including:
a compressor having an upper housing section forming at least a portion of the collecting receptacle, condensed water within the collecting receptacle contacting the upper housing section and absorbing waste heat from the compressor;
a liquefier receiving compressed relatively warm refrigerant from the compressor, a pressure connection connected to the upper housing portion of the compressor and carrying refrigerant from the compressor to the liquefier, the pressure connection passing through the collecting receptacle and heat from the refrigerant being dissipated to the condensed water in the collecting receptacle;
a heating device heating the collecting receptacle, the heating device and the compressor being operated independently from one another.
7. The refrigerating appliance according to claim 6 , wherein the refrigerant circuit includes:
a evaporator providing expanded relatively cold refrigerant to the compressor; and
a suction connection connected to the compressor and carrying refrigerant from the evaporator to the compressor, the suction connection passing through the collecting receptacle and having an insulating jacket surrounding the suction connection within the collection receptacle to insulate the refrigerant from the condensed water in the collecting receptacle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/155,428 US20110232309A1 (en) | 2004-03-15 | 2011-06-08 | Refrigerating appliance |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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DE102004012498A DE102004012498A1 (en) | 2004-03-15 | 2004-03-15 | The refrigerator |
DE102004012498.1 | 2004-03-15 | ||
PCT/EP2005/051136 WO2005090878A1 (en) | 2004-03-15 | 2005-03-14 | Refrigerating appliance |
US59297008A | 2008-06-25 | 2008-06-25 | |
US13/155,428 US20110232309A1 (en) | 2004-03-15 | 2011-06-08 | Refrigerating appliance |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2005/051136 Division WO2005090878A1 (en) | 2004-03-15 | 2005-03-14 | Refrigerating appliance |
US59297008A Division | 2004-03-15 | 2008-06-25 |
Publications (1)
Publication Number | Publication Date |
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US20110232309A1 true US20110232309A1 (en) | 2011-09-29 |
Family
ID=34961353
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/592,970 Expired - Fee Related US8020392B2 (en) | 2004-03-15 | 2005-03-14 | Refrigerating appliance |
US13/155,428 Abandoned US20110232309A1 (en) | 2004-03-15 | 2011-06-08 | Refrigerating appliance |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/592,970 Expired - Fee Related US8020392B2 (en) | 2004-03-15 | 2005-03-14 | Refrigerating appliance |
Country Status (6)
Country | Link |
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US (2) | US8020392B2 (en) |
EP (1) | EP1728031A1 (en) |
CN (1) | CN1930428B (en) |
DE (2) | DE102004012498A1 (en) |
RU (1) | RU2374573C2 (en) |
WO (1) | WO2005090878A1 (en) |
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WO2014019850A1 (en) * | 2012-07-31 | 2014-02-06 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator having an evaporation tray |
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ES2604003B1 (en) * | 2015-09-02 | 2017-12-12 | Bsh Electrodomésticos España, S.A. | Household refrigerator appliance with a specific receiver for defrosting water |
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DE102021125917A1 (en) | 2021-10-06 | 2023-04-06 | Vaillant Gmbh | Method and device for preventing ice formation in a pan for collecting condensate of an evaporator of a heat pump |
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- 2004-03-15 DE DE102004012498A patent/DE102004012498A1/en not_active Withdrawn
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- 2005-03-14 WO PCT/EP2005/051136 patent/WO2005090878A1/en active Application Filing
- 2005-03-14 EP EP05717022A patent/EP1728031A1/en not_active Withdrawn
- 2005-03-14 RU RU2006130847/12A patent/RU2374573C2/en not_active IP Right Cessation
- 2005-03-14 US US10/592,970 patent/US8020392B2/en not_active Expired - Fee Related
- 2005-03-14 DE DE202005021918U patent/DE202005021918U1/en not_active Expired - Lifetime
- 2005-03-14 CN CN2005800081489A patent/CN1930428B/en not_active Expired - Fee Related
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CN102349769A (en) * | 2011-10-13 | 2012-02-15 | 合肥美的荣事达电冰箱有限公司 | Display cabinet |
WO2014019850A1 (en) * | 2012-07-31 | 2014-02-06 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator having an evaporation tray |
Also Published As
Publication number | Publication date |
---|---|
US8020392B2 (en) | 2011-09-20 |
DE202005021918U1 (en) | 2011-05-19 |
RU2374573C2 (en) | 2009-11-27 |
US20080250799A1 (en) | 2008-10-16 |
EP1728031A1 (en) | 2006-12-06 |
CN1930428A (en) | 2007-03-14 |
CN1930428B (en) | 2010-05-05 |
WO2005090878A1 (en) | 2005-09-29 |
DE102004012498A1 (en) | 2005-10-06 |
RU2006130847A (en) | 2008-04-27 |
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