CN101113859A - Refrigerator evaporator defrost method and defrosting device using the method - Google Patents
Refrigerator evaporator defrost method and defrosting device using the method Download PDFInfo
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- CN101113859A CN101113859A CNA2006101037494A CN200610103749A CN101113859A CN 101113859 A CN101113859 A CN 101113859A CN A2006101037494 A CNA2006101037494 A CN A2006101037494A CN 200610103749 A CN200610103749 A CN 200610103749A CN 101113859 A CN101113859 A CN 101113859A
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- pipe
- drainpipe
- evaporimeter
- drip tray
- hot defrosting
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- Defrosting Systems (AREA)
Abstract
The invention relates to a defrosting method of an evaporator of a freezer, taking use of high pressure high temperature refrigerant from a compressor which directly enters the evaporator without going through a condenser to heat up and defrost the evaporator and being characterized in that: the high pressure high temperature refrigerant firstly heats up and deices a water pan and drainpipes of the water pan before entering the evaporator. The invention ensures that a hot defrosting pipe enters through the drainpipes at the bottom part of the water pan to firstly melt the ice in the drainpipes at the bottom part of the water pan with the heat of the hot defrosting pipe, then enters into the evaporator to defrost, so as to open a channel before defrosting and to put an end to the blockage problem of the drainpipes at the bottom part of the water pan.
Description
Technical field
The present invention relates to a kind of refrigerating plant, particularly utilize refrigerating plant to carry out the refrigerator evaporator defrost device of evaporator defrost.
Background technology
General refrigerator or refrigerator are to become liquid low-temperature refrigerant one to enter the evaporator evaporation swelling heat absorption via capillary to become gaseous refrigerant and enter the circulation that compressor compresses becomes high temperature and high pressure gaseous refrigerant again and again by cold-producing medium (refrigerant) being compressed into high temperature and high pressure gaseous refrigerant one condenser condenses, the box house temperature is reduced, keep the device of food freshness within a certain period of time.Liquid refrigerant evaporates a large amount of heats of absorption in evaporimeter reduce evaporator temperature, and carry out heat exchange by evaporimeter and surrounding environment.Because the temperature of evaporimeter is far below ambient temperature, moisture in the surrounding air can sublimate frost on the surface of evaporimeter, constantly thickening is icing for the lengthening frost in time, the frost layer of evaporator surface seriously hinders evaporimeter and surrounding environment (in the casing) to carry out heat exchange, because the temperature in the casing does not reach design temperature, compressor is constantly worked, and has increased energy consumption.Therefore evaporator defrost is the content that refrigerator or refrigerator design must be considered.
The evaporator defrost of current refrigerator or refrigerator has following several: 1, electric defrosting, electric heater is housed near evaporimeter, and regularly energising heating defrosts.2, the high-temperature high-pressure refrigerant after the compressor compresses is directly entered evaporimeter without condenser, heat defrosting, this scheme need not increase electric calorifie installation, only establishes a three-way magnetic valve and can realize on the output pipe of compressor, relatively simple for structure, be widely adopted.
Fig. 1 is the basic flow sheet that has the refrigerating plant of the refrigerator with defrost function now:
This device is to connect a three-way pipe to form a defrosting along separate routes between the compressor of refrigerating plant and condenser, establish the magnetic valve of a connection evaporimeter in this defrosting along separate routes, (self-timing defrosting or artificial defrosting) magnetic valve is opened when needs defrost, cold-producing medium directly enters evaporimeter from compressor without condenser, utilize high-temperature high-pressure refrigerant that evaporimeter is heated, defrost.During refrigeration, closed electromagnetic valve, compressor is compressed into high temperature and high pressure gaseous refrigerant with cold-producing medium and send condenser, be condensed into liquid low-temperature refrigerant, entering the evaporator evaporation swelling heat absorption via capillary again becomes gaseous refrigerant, enters the continuous circularly cooling that compressor compresses becomes high temperature and high pressure gaseous refrigerant again.
In order to adapt to the requirement of different cooling conditions, reduce the liquid refrigerant in the evaporimeter for refrigerator-freezer or Refrigerating device for refrigerator, also be provided with fluid reservoir between condenser and filter, this defrosting refrigerating plant as shown in Figure 2.
The concrete structure of above-mentioned defrosting refrigerating plant as shown in Figure 3, the outlet of compressor 1 connects three-way pipe 2, a termination condenser 3 of three-way pipe 2, and the output of condenser 3 connects the input of evaporimeter 5 through filter 4 and capillary, the output of evaporimeter 5 connects the input of compressor 1, forms the kind of refrigeration cycle path;
The input of another termination magnetic valve 6 of three-way pipe 2, the output of magnetic valve 6 connects the input of evaporimeter 5, and the output of evaporimeter 5 connects the input of compressor 1, forms the defrost cycle path.
Above-mentioned defroster also is provided with drip tray 7 below evaporimeter, the bottom of drip tray 7 is provided with drainpipe 8, to be fed evaporimeter 5 by the high temperature refrigerant after compressor 1 compression, with near the device evaporimeter 5 and the evaporimeter 5, condensation frost as surfaces such as the side plate 10 of evaporimeter 5, the drip trays 7 of base of evaporator is melted, and is discharged by the drainpipe 8 of drip tray 7 bottoms.Yet, because drainpipe 8 opening parts freeze, usually cause water row not go out overflow and go in the refrigerating chamber, the food of refrigeration is immersed in water.
Summary of the invention
Technical problem to be solved by this invention is, above-mentioned deficiency at prior art, and a kind of refrigerator evaporator defrost device that utilizes refrigerating plant to carry out evaporator defrost, the defrost process of this defroster are provided is the icing thawing that makes the drainpipe mouth of pipe earlier, and then evaporimeter is defrosted.
Provided by the present invention have following technical scheme to realize.
A kind of refrigerator evaporator defrost method, utilization directly enters evaporimeter from the high pressure, high temperature refrigerant that compressor comes out without condenser, evaporimeter is heated defrosting, it is characterized in that: described high pressure, high temperature refrigerant is before entering evaporimeter, and the drainpipe to drip tray and drip tray adds thermalization ice earlier.
Described refrigerator evaporator defrost method is characterized in that: described elder generation adds thermalization ice to the drainpipe of drip tray, is that the hot defrosting pipe that will import high pressure, high temperature refrigerant is arranged in the pipe of drainpipe.
Described refrigerator evaporator defrost method is characterized in that: the described hot defrosting pipe that is arranged in the drainpipe pipe is to be arranged in the drainpipe mouth of pipe of drip tray at least.
Described refrigerator evaporator defrost method, it is characterized in that: it is to be provided with hot defrosting coil pipe in drip tray that described elder generation adds thermalization ice to drip tray, described hot defrosting coil pipe is connected with the hot defrosting pipe in the described drainpipe pipe, frost in drainpipe is melted the further frost of melting in the drip tray in back, and discharges from drainpipe.
The present invention also provides a kind of defroster that is used for above-mentioned refrigerator evaporator defrost method.
A kind of refrigerator evaporator defrost device, comprise: by compressor, three-way pipe, be connected to the refrigerating circulatory device that condenser, evaporimeter constituted of three-way pipe one end and be connected to the three-way pipe other end by defrost cycle device that magnetic valve, evaporimeter constituted, below evaporimeter, also be provided with drip tray, the bottom of drip tray is provided with drainpipe, it is characterized in that: be provided with the hot defrosting pipe of a connection magnetic valve and evaporimeter, described hot defrosting pipe is arranged in the drainpipe of drip tray bottom.
Described refrigerator evaporator defrost device is characterized in that: also be provided with hot defrosting coil pipe in described drip tray, a termination of described hot defrosting coil pipe is located at the hot defrosting pipe in the drainpipe, another termination evaporimeter of hot defrosting coil pipe.
Described refrigerator evaporator defrost device is characterized in that: described hot defrosting coil pipe is the coil pipe that crawls.
Described refrigerator evaporator defrost device is characterized in that: described hot defrosting coil pipe is circle or rectangle coil pipe.
The invention has the advantages that:
The present invention enters the drainpipe of hot defrosting pipe by drip tray bottom, and the heat that utilizes hot defrosting pipe is at first with the ice-out in the drainpipe of drip tray bottom, and then enters evaporator defrost, realizes the first path of defrosting.Stop to take place the problem that the drainpipe of drip tray bottom is blocked.
For architectural feature of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is existing flow chart with refrigerating plant of defrost function refrigerator.
Fig. 2 is existing flow chart with refrigerating plant of fluid reservoir.
Fig. 3 is existing refrigerating plant structural representation with defrost function refrigerator.
Fig. 4 is the refrigerating plant structural representation that the present invention has the defrost function refrigerator.
Fig. 5 is the stereogram that the present invention has the refrigerating plant of defrost function refrigerator.
Fig. 6 is a kind of specific embodiment figure of the hot defrosting coil pipe of the present invention.
Fig. 7 is the another kind of specific embodiment figure of the hot defrosting coil pipe of the present invention.
The specific embodiment
The present invention provides a kind of method and defroster that utilizes the refrigerator evaporator defrost that refrigerating plant carries out evaporator defrost.
Described Defrost method is same as the existing high pressure, high temperature refrigerant of coming out from compressor of utilizing and directly enters evaporimeter without condenser, evaporimeter is heated the method for defrosting.Be solution white obstruction owing to the drainpipe mouth of pipe that reaches water pond is frozen, the problem that causes water row not go out, the present invention proposed high pressure, high temperature refrigerant before entering evaporimeter, drainpipe to drip tray and drip tray adds thermalization ice earlier, get through drainage channel, and then evaporimeter is defrosted.
Described elder generation adds thermalization ice to the drainpipe of drip tray, is that the hot defrosting pipe that will import high pressure, high temperature refrigerant is arranged in the pipe of drainpipe.And the described hot defrosting pipe that is arranged in the drainpipe pipe is to be arranged in the drainpipe mouth of pipe of drip tray at least.The drainpipe of generally being located at the drip tray bottom is vertically downward, usually in pipe, do not have very long by the part of frost shutoff, therefore specific practice is that hot defrosting pipe enters drainpipe from the drainpipe tube wall near the mouth of pipe, enters drip tray from the drainpipe mouth of pipe, and then connects evaporimeter.Directly at first entering the hot defrosting pipe that is arranged in the drainpipe from the next high-temperature high-pressure refrigerant of compressor melts the frost in the drainpipe and the drainpipe mouth of pipe.If the non-perpendicular setting of drainpipe or the part of freezing are longer, then hot defrosting Guan Yingcong enters drainpipe at a distance from the drainpipe mouth of pipe.
Further, because drip tray is near evaporimeter, also be the parts of easy frosting, if be covered with ice in the drip tray, also can cause can not draining, therefore also needs earlier the frost in the drip tray to be melted.Earlier drip tray being added thermalization ice is to be provided with hot defrosting coil pipe in drip tray, described hot defrosting coil pipe is connected with the hot defrosting pipe in the described drainpipe pipe, frost in drainpipe is melted the further frost of melting in the drip tray in back, and discharges from drainpipe.And then enter evaporimeter evaporimeter is defrosted.
Refrigerator evaporator defrost method provided by the present invention, mainly be that the drainpipe of hot defrosting pipe by the drip tray bottom entered, the heat that utilizes hot defrosting pipe is at first with the ice-out in the drainpipe of drip tray bottom, and then enters evaporator defrost, realizes the first path of defrosting.Stop to take place the problem that the drainpipe of drip tray bottom is blocked.
The present invention also provides a kind of defroster that is used for above-mentioned refrigerator evaporator defrost method.
It shown in Fig. 4,5 refrigerator evaporator defrost schematic representation of apparatus provided by the present invention, comprise: the refrigerating circulatory device that is constituted by compressor 1, three-way pipe 2, the condenser 3 that is connected to three-way pipe 2 one ends, filter 4, evaporimeter 5 and be connected to the defrost cycle device that is constituted by magnetic valve 6, hot defrosting pipe 9 and evaporimeter 5 of three-way pipe 2 other ends, below evaporimeter 5, also be provided with drip tray 7, the bottom of drip tray 7 is provided with drainpipe 8, wherein:
The course of work of refrigerating circulatory device is, the compressor 1 gaseous refrigerant compression of flash-pot 5 in the future is called high temperature and high pressure gaseous refrigerant, enter condenser 3 through three-way pipe 2, through condensation 3 cooling become the low temperature liquid cold-producing medium, low temperature liquid cold-producing medium process filter 4 removes by filter moisture, wet goods impurity enters evaporimeter 5 via capillary, liquid refrigerant expands to evaporate and absorbs heat into gaseous refrigerant in evaporimeter 5, returns the refrigerating circulatory device that compressor constitutes.
The liquid liquid cold-producing medium expands, and evaporating absorbs heat reduces evaporimeter and near object temperature thereof, and frost is formed in the continuous condensation of the body surface cold of surrounding air contained humidity, need start defrosting through certain hour.
Defrost process of the present invention is as follows: another termination magnetic valve 6 of three-way pipe 2, when the defrosting program is activated, magnetic valve 6 is connected, because magnetic valve directly connects evaporimeter 5 by hot defrosting pipe 9, also have condenser, filter and capillary in the kind of refrigeration cycle path, therefore defrost cycle loop resistance is less, and high temperature and high pressure gaseous refrigerant directly enters evaporimeter, and evaporimeter is heated defrosting.
For realizing that defrosting gets through drainage channel earlier, described hot defrosting pipe 9 is arranged in the drainpipe 8 of drip tray 7 bottoms as shown in Figure 4.For melting the frost in the drip tray 7, in described drip tray 7, also be provided with hot defrosting coil pipe 42, a termination of described hot defrosting coil pipe 42 is located at the hot defrosting pipe 9 in the drainpipe, another termination evaporimeter 5 of hot defrosting coil pipe 42.
The present invention of being shown in Figure 5 has the stereogram of the refrigerating plant of defrost function refrigerator.
As seen from the figure, being constructed as follows of refrigerating plant with defrost function refrigerator of the present invention: the output of compressor 1 connects three-way pipe 2 by vent connection 22, one end of three-way pipe 2 connects evaporating dish pipe 26 through vent connection 25, described evaporating dish pipe 26 is arranged on the evaporating dish 39 of being located at the bottom, and the structure function of relevant evaporating dish 39 is hereinafter described in addition.Evaporating dish pipe 26 connects condenser 3 by condenser air inlet pipe 27, the lubricating oil that the output of condenser 3 is taken over filter 4 filtering moisture and had compressor to take out of by dew removing tube 30, the output of filter 4 connects gas-liquid separator 34 by capillary 32, separate the gas in the liquid refrigerant, the output of gas-liquid separator 34 connects evaporimeter 5, and the output of evaporimeter 5 connects compressor 1 by muffler 40 and constitutes refrigeration cycle.
Another termination magnetic valve 6 of three-way pipe 2, the output of magnetic valve 6 connects hot defrosting coil pipe 42 by hot defrosting pipe 9, and hot defrosting coil pipe 42 connects evaporimeter 5, and the output of evaporimeter 5 connects compressor 1 by muffler 40 and constitutes the defrost cycle loop.
Bottom with refrigerating plant of defrost function refrigerator of the present invention is provided with a dish type evaporating dish 39, described compressor 1, condenser 3 and evaporating dish pipe 26 all are arranged on the described evaporating dish 39, water in the drip tray flows in the evaporating dish 39 by drainpipe, described compressor 1, condenser 3 and evaporating dish pipe 26 are cooled off, reach purpose simultaneously the evaporation of the water in the evaporating dish.High-temperature gas cold-producing medium by compressor 21 comes out can tentatively cool off through the evaporating dish pipe, and then enters condenser.
Fig. 6, the 7th, the specific embodiment figure of the hot defrosting coil pipe of the present invention.Described hot defrosting coil pipe is the coil pipe that crawls.Described hot defrosting coil pipe also can be circle or rectangle coil pipe.
Claims (8)
1. refrigerator evaporator defrost method, utilization directly enters evaporimeter from the high pressure, high temperature refrigerant that compressor comes out without condenser, evaporimeter is heated defrosting, it is characterized in that: described high pressure, high temperature refrigerant is before entering evaporimeter, and the drainpipe to drip tray and drip tray adds thermalization ice earlier.
2. refrigerator evaporator defrost method according to claim 1 is characterized in that: described elder generation adds thermalization ice to the drainpipe of drip tray, is that the hot defrosting pipe that will import high pressure, high temperature refrigerant is arranged in the pipe of drainpipe.
3. refrigerator evaporator defrost method according to claim 2 is characterized in that: the described hot defrosting pipe that is arranged in the drainpipe pipe is to be arranged in the drainpipe mouth of pipe of drip tray at least.
4. refrigerator evaporator defrost method according to claim 2, it is characterized in that: it is to be provided with hot defrosting coil pipe in drip tray that described elder generation adds thermalization ice to drip tray, described hot defrosting coil pipe is connected with the hot defrosting pipe in the described drainpipe pipe, frost in drainpipe is melted the further frost of melting in the drip tray in back, and discharges from drainpipe.
5. refrigerator evaporator defrost device, comprise: by compressor, three-way pipe, be connected to the refrigerating circulatory device that condenser, evaporimeter constituted of three-way pipe one end and be connected to the three-way pipe other end by defrost cycle device that magnetic valve, evaporimeter constituted, below evaporimeter, also be provided with drip tray, the bottom of drip tray is provided with drainpipe, it is characterized in that: be provided with the hot defrosting pipe of a connection magnetic valve and evaporimeter, described hot defrosting pipe is arranged in the drainpipe of drip tray bottom.
6. refrigerator evaporator defrost device according to claim 5, it is characterized in that: in described drip tray, also be provided with hot defrosting coil pipe, one termination of described hot defrosting coil pipe is located at the hot defrosting pipe in the drainpipe, another termination evaporimeter of hot defrosting coil pipe.
7. refrigerator evaporator defrost device according to claim 5 is characterized in that: described hot defrosting coil pipe is the coil pipe that crawls.
8. refrigerator evaporator defrost device according to claim 1 is characterized in that: described hot defrosting coil pipe is circle or rectangle coil pipe.
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CN2006101037494A CN101113859B (en) | 2006-07-28 | 2006-07-28 | Refrigerator evaporator defrost method and defrosting device using the method |
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CN2006101037494A CN101113859B (en) | 2006-07-28 | 2006-07-28 | Refrigerator evaporator defrost method and defrosting device using the method |
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CN101984312A (en) * | 2010-11-23 | 2011-03-09 | 深圳和而泰智能控制股份有限公司 | Refrigerator defrosting system and method |
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CN103292545A (en) * | 2013-05-06 | 2013-09-11 | 四川长虹电器股份有限公司 | Method and device for defrosting and maintaining pressure of refrigerator |
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CN106679253A (en) * | 2016-11-01 | 2017-05-17 | 安徽美乐柯制冷空调设备有限公司 | Defrosting and refrigerating system and cold storage |
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CN109708331A (en) * | 2019-03-06 | 2019-05-03 | 泱焓冷链系统(江苏)有限公司 | A kind of refrigeration system directly made ice for multiple groups large size |
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CN101984312A (en) * | 2010-11-23 | 2011-03-09 | 深圳和而泰智能控制股份有限公司 | Refrigerator defrosting system and method |
CN102914047A (en) * | 2012-11-15 | 2013-02-06 | 浙江正理生能科技有限公司 | Air source heat pump water heater |
CN102914047B (en) * | 2012-11-15 | 2015-10-07 | 浙江正理生能科技有限公司 | Air source hot pump water heater |
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CN106403384A (en) * | 2015-07-28 | 2017-02-15 | 广州中臣碧阳船舶科技有限公司 | Ship fan evaporator using hot air to melt frost |
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CN109708331A (en) * | 2019-03-06 | 2019-05-03 | 泱焓冷链系统(江苏)有限公司 | A kind of refrigeration system directly made ice for multiple groups large size |
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CN111189284A (en) * | 2020-01-10 | 2020-05-22 | 新誉防务技术有限公司 | Heating control method and heating control system for cold storage air cooler drain pipe for ship |
CN114719540A (en) * | 2022-05-03 | 2022-07-08 | 四方科技集团股份有限公司 | Quick defrosting type air-cooler |
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CN115265040A (en) * | 2022-07-26 | 2022-11-01 | 澳柯玛股份有限公司 | Double-bridge parallel evaporator air cooling system and control method thereof |
CN115265041A (en) * | 2022-07-26 | 2022-11-01 | 澳柯玛股份有限公司 | Coaxial double-bridge parallel evaporator type electromagnetic control hot-air defrosting air-cooled refrigerator |
CN115265040B (en) * | 2022-07-26 | 2023-09-05 | 澳柯玛股份有限公司 | Double-bridge parallel evaporator air cooling system and control method thereof |
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