CN202204231U - Compression direct cooling electric refrigerator - Google Patents
Compression direct cooling electric refrigerator Download PDFInfo
- Publication number
- CN202204231U CN202204231U CN2011203120717U CN201120312071U CN202204231U CN 202204231 U CN202204231 U CN 202204231U CN 2011203120717 U CN2011203120717 U CN 2011203120717U CN 201120312071 U CN201120312071 U CN 201120312071U CN 202204231 U CN202204231 U CN 202204231U
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- Prior art keywords
- refrigerator
- temperature
- frosting
- frost
- direct cooling
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- Expired - Fee Related
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
Abstract
The utility model discloses a compression direct cooling electric refrigerator. The compression direct cooling electric refrigerator comprises a direct cooling electric refrigerator; and the surface of the inner wall of an evaporator area of a refrigeration chamber is provided with an electric heating piece and a frost formation temperature controller probe, and an automatic switch is connected in series with the electric heating piece and then is connected in parallel with a power supply circuit of the electric refrigerator. When frost with certain thickness is formed on the inner wall of the refrigeration chamber, the automatic switch automatically turns on the electric heating piece because temperature is reduced, and frost is removed, the heat exchange of an evaporator is improved obviously, energy efficiency ratio is improved, and the running time of a compressor is obviously shortened at the same refrigeration temperature; and electrical heating can be automatically stopped after the frost is removed. The defects that the temperature of the refrigeration chamber cannot be reduced because the frost is frequently formed on the local part of the inner wall of the refrigeration chamber when the preset temperature of the refrigeration chamber of the direct cooling electric refrigerator is very low, and the running time of the compressor is obviously prolonged because refrigeration coefficients are greatly reduced, and the like are overcome. The utility model is used for improving various direct cooling electric refrigerators, obviously prolonging the service life of the compressor and saving electricity, ensures that the temperature of the refrigeration chamber can be quickly reduced, and facilitates food preservation.
Description
Technical field
The utility model relates to a kind of refrigerator, refers in particular to a kind of compression derect refrigerated refrigerator.
Background technology
The refrigerator that coefficient of refrigerating performance is the highest in the world today is the refrigerator of compression-type refrigeration circulation, and it can be divided into derect refrigerated refrigerator and indirect-cooling refrigerator.Derect refrigerated refrigerator is the maximum a kind of refrigerator of China's sales volume and social owning amount, and because of its cost performance is higher than the indirect-cooling refrigerator, and fault rate is also low.It each has independently evaporimeter at the refrigerating chamber and the refrigerating chamber of refrigerator; Temperature controller is installed in the refrigerating chamber; Through the start-stop ratio of temperature controller automatic control compressor, thereby control the mean temperature in the refrigerating chamber automatically, the temperature in the refrigerating chamber also changes thereupon.Because the temperature controller of derect refrigerated refrigerator is at refrigerating chamber; So the heat exchange quality of refrigeration indoor evaporator and its interior food has just determined the Energy Efficiency Ratio (or claiming coefficient of refrigerating performance) of refrigerator; Frosting and heat exchange quality are irrelevant with the temperature controller switch state as for refrigerating chamber; Also promptly irrelevant with the Energy Efficiency Ratio of whole refrigerator, so Energy Efficiency Ratio only depends on and the refrigerating chamber operating mode.
The temperature of cold storage chamber of refrigerator generally is controlled at 0-12 degree centigrade, but to summer, because air humidity is big, dewfall or frosting are very fast in the refrigerating chamber.Fact proved; When temperature controller is arranged on refrigerating chamber when 6 degree are following; The freezer wall surface in refrigerator evaporator zone will very fast frosting (this be because summer environment temperature high, air humidity is big; Refrigerating chamber will obtain the low temperature below 6 degree, the refrigerator evaporator temperature to be lower than zero degree just can), and summer, compressor operating time was very long; Frosting can not be changed yet after the of short duration shutdown of compressor, so cause in the refrigerating chamber frosting very thick (user's preset temperature is low more, the big more frosting of air humidity thick more).This bed thickness frost; Owing to be to rely on the air free convection slowly in the refrigerating chamber not melt; This will seriously hinder refrigerator evaporator and the heat exchange that refrigerates room air and object; Reach the same interior cryogenic temperature of refrigerating chamber; Compressor want extra many runnings for a long time even continuously running do not shut down and do not reach below 6 degree yet, this has just brought the reduction significantly, waste of electric energy of Energy Efficiency Ratio and the drawback in shortening compressor service life, has brought inconvenience also for the lower temperature that obtains refrigerating chamber in summer.
Summary of the invention
The purpose of the utility model, but provide a kind of in each refrigerating chamber in season the compression derect refrigerated refrigerator of automatic defrosting.
To achieve these goals; The utility model comprises a derect refrigerated refrigerator; Freezer wall surface (3) in its refrigerator evaporator zone is equipped with electrothermal piece (6), near the outer surface of electrothermal piece (6); Frosting thermostat probe (4) is installed, parallelly connected after automatic switch (K) is connected with electrothermal piece (6) with the power supply circuits of refrigerator circuit (1).Have narrow interval between the outer surface of frosting thermostat probe (4) and electrothermal piece (6); Frosting thermostat probe (4) is fixed on the securing member (10), and securing member (10) is fixed on the freezer wall surface (3) in refrigerator evaporator zone through column (12) and screw (9).Securing member (10) is made for the insulation heat-barrier material.Have slack adjuster between frosting thermostat probe (4) and the electrothermal piece (6).
Because the utility model is equipped with electrothermal piece and frosting thermostat probe on the freezer wall surface in the refrigerator evaporator zone of derect refrigerated refrigerator, the power supply circuits with the refrigerator circuit after the automatic switch of frosting temperature controller is connected with electrothermal piece are in parallel.This just makes after the freezer wall surface frosting in refrigerator evaporator zone; The frost of knot has just touched the frosting thermostat probe, and the temperature of frost is a zero degree or sub-zero, is zero degree if the automatic connection temperature of automatic switch is set; Automatic switch is connected automatically; Cause the automatic heating power of electrothermal piece, the frost of knot has also just melted rapidly, has improved the Energy Efficiency Ratio of refrigerator.After frostization is intact, but automatic switch automatic disconnection and stop electrical heating again.Under same cryogenic temperature, significantly shorten compressor operating time, practiced thrift electric energy, also prolonged compressor service life.Make things convenient for the user to obtain the low temperature of refrigerating chamber, prolonged effective period of food quality.
Description of drawings
Fig. 1 is the schematic diagram of the utility model.
Fig. 2 is the integral installation figure of the utility model.
The specific embodiment
In Fig. 1; Frosting thermostat probe 4, TEMP transfer tube 5, frosting temperature controller shell 7, automatic switch K form the frosting temperature controller; Available common on the market mechanical temperature-sensitive cavate temperature controller replace (frosting this moment thermostat probe 4 and TEMP transfer tube 5 just become for same external end head sealing, hollow and in the temperature-sensitive pipe of temperature gas is arranged; Its inner termination is connected with temperature controller temperature-sensitive chamber, and one section disc that coils into the snail shape in outer end of temperature-sensitive pipe is just constituted frosting thermostat probe 4, and the structure when this installs with the common refrigerator temperature controller is identical); But should utilize its normally closed switch contact, and will connect preset temperature smaller or equal to zero degree.Three core single phase poaer supply plugs 8 are parallelly connected with the power input of refrigerator circuit 1, and are parallelly connected with the power input of refrigerator circuit 1 after electrothermal piece 6 is connected with automatic switch K.Electrothermal piece 6 is installed in the freezer wall surface 3 in refrigerator evaporator zone.Automatic switch K is installed in the frosting temperature controller shell 7, and frosting temperature controller shell 7 is installed on the sidewall in the refrigerating chamber.The securing member 10 of frosting thermostat probe 4 and the insulation that plastics are made heat insulation (for anticreep and the sensitiveness that improves frosting) bonds together, the freezer wall surface 3 in securing member 10 and column 12 usefulness screws 9 and refrigerator evaporator zone tighten together (certain screw 9 can be deep into refrigerator body inside).To between frosting thermostat probe 4 and electrothermal piece 6, form the 0.2-0.5 mm clearance; Like this when frost-free or frosting are very thin; Even if the temperature on the freezer wall surface 3 in refrigerator evaporator zone is subzero; The temperature of frosting thermostat probe 4 also is that the temperature of refrigeration room air is a temperature above freezing, and automatic switch K is connected.When screw 9 was four, the column 12 at corresponding screw position also had four (at four angles of securing member 10), and corresponding securing member 10 is a square-shaped planar.Column 12 can be (injection molded) of one with securing member 10.
Regulate the gap between frosting thermostat probe 4 and the electrothermal piece 6 for ease, but between increases slack adjuster.Such as on four columns 12, putting elastomeric stage clip separately, keep against these four spring handle gaps, regulate four screws 19 with regard to scalable both the gap.Adopt the regulative mode of other structures also can.
In Fig. 2, the refrigerating chamber of refrigerator main body 11 is installed chamber door 2, and upper area is a refrigerating chamber, and lower area is a refrigerating chamber.Be that parts such as simplification is narrated, the temperature controller of the original band of refrigerator and structural member do not draw.3 the positions, upper back, freezer wall surface in refrigerator evaporator zone at refrigerating chamber.Frosting temperature controller shell 7 is installed on the right side wall in the refrigerating chamber, because of this zone generally has temperature controller.TEMP transfer tube 5 is close to the refrigerating chamber sidewall and is installed, but the position that contacts with electrothermal piece 6 will put the bad material of thermal conductivity (thickness is at the pottery more than 2 millimeters, rubber tube etc.).Be simplified structure, original temperature controller shell is done a little louder again, also packs automatic switch K of present embodiment etc. into and wherein also can.
The electrothermal piece 6 of present embodiment can form (be similar to electric blanket but more intensive) with the circuitous coiling of thin spiral heating wire, is fixed on then on the freezer wall surface 3 in refrigerator evaporator zone, and also available Electric radiant Heating Film replaces, and the both is called electrothermal piece 6.The resistance value of electrothermal piece 6 is advisable at 400 ~ 900 ohm.
The work course of work of present embodiment is following: when the user regulates the original temperature controller of refrigerator; Preset temperature of refrigerating chamber below 6 degrees centigrade the time; Frosting possibly on the freezer wall surface 3 in refrigerator evaporator zone and the electrothermal piece 6; White thick when knot to making it to touch 4 last times of frosting thermostat probe, frosting thermostat probe 4 inner temperature gases shrink because of cooling, make the contraction of temperature-sensitive chamber through TEMP transfer tube 5; Thereby cause the automatic switch K of normal off to connect automatically, electrothermal piece 6 is switched on and defrost; After having changed frost, because of frosting thermostat probe 4 frostless intensifications, the temperature gas in it expands because of intensification, causes automatic switch K to break off.The frosting defrosting hockets like this; Just can Keep cool indoor basic frost-free; Especially basic no thick frost does not influence the heat exchange of interior food of refrigerator evaporator and refrigerating chamber and air, has brought to obtain lower temperature, economize on electricity, the prolongation refrigerator advantage in service life.
Second embodiment of the utility model is after connecting electrothermal piece 6 with automatic switch K and the 220V power output end of the temperature controller switch in the refrigerator circuit 1 is in parallel; Temperature controller breaks off the also just no longer electrical heating of back electrothermal piece 6 in this case; Also be electrothermal piece 6 and the synchronous stall of compressor, effect is with aforementioned similar.
The 3rd embodiment of the utility model changes into the frosting temperature controller electronically controlled; Frosting this moment thermostat probe 4 is temperature sensor (such as a thermistor); TEMP transfer tube 5 is two leads, and electronic control circuit and automatic switch (relay or controllable silicon) and shell can be installed in any position of refrigerator body.
Claims (4)
1. one kind is compressed derect refrigerated refrigerator; Comprise a derect refrigerated refrigerator; It is characterized in that electrothermal piece (6) being installed, near the outer surface of electrothermal piece (6) on the freezer wall surface (3) in refrigerator evaporator zone; Frosting thermostat probe (4) is installed, parallelly connected after automatic switch (K) is connected with electrothermal piece (6) with the power supply circuits of refrigerator circuit (1).
2. by the described compression derect refrigerated refrigerator of claim 1; It is characterized in that having narrow interval between the outer surface of frosting thermostat probe (4) and electrothermal piece (6); Frosting thermostat probe (4) is fixed on the securing member (10), and securing member (10) is fixed on the freezer wall surface (3) in refrigerator evaporator zone through column (12) and screw (9).
3. by the described compression derect refrigerated refrigerator of claim 2, it is characterized in that securing member (10) is that the insulation heat-barrier material is made.
4. by the described compression derect refrigerated refrigerator of claim 1, it is characterized in that having slack adjuster between regional freezer wall of frosting thermostat probe (4) and refrigerator evaporator surperficial (3) and the electrothermal piece (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203120717U CN202204231U (en) | 2011-08-25 | 2011-08-25 | Compression direct cooling electric refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203120717U CN202204231U (en) | 2011-08-25 | 2011-08-25 | Compression direct cooling electric refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202204231U true CN202204231U (en) | 2012-04-25 |
Family
ID=45968352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203120717U Expired - Fee Related CN202204231U (en) | 2011-08-25 | 2011-08-25 | Compression direct cooling electric refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202204231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019602A (en) * | 2014-06-28 | 2014-09-03 | 刘雄 | Defrosting refrigerator |
| CN108375264A (en) * | 2018-02-16 | 2018-08-07 | 吴玉珍 | The refrigerator that high refrigerating efficiency more economizes on electricity |
-
2011
- 2011-08-25 CN CN2011203120717U patent/CN202204231U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019602A (en) * | 2014-06-28 | 2014-09-03 | 刘雄 | Defrosting refrigerator |
| CN108375264A (en) * | 2018-02-16 | 2018-08-07 | 吴玉珍 | The refrigerator that high refrigerating efficiency more economizes on electricity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120825 |