CN1871483A - Refrigerator - Google Patents

Abstract

A refrigerator comprises a refrigerator box body, a refrigeration cycle with circulation of combustible refrigerant, and a water collecting basin for receiving and evaporating defrosted water. The refrigeration cycle has a condenser disposed in the refrigerator box body and composed of heat radiation pipes, a compressor, a pressure reducer, and an evaporator. The water collecting basin is disposed above the compressor and receives and evaporates defrosted water from the evaporator. In this refrigerator, even when it is a small-sized refrigerator with a capacity of 200 L or less, it is possible to prevent leakage of refrigerant and to realize simplification, energy saving, and cost reduction of refrigeration cycle.

Description

Refrigerator

Technical field

The present invention relates to tackle the refrigerator of the explosion-proof and system architecture simplification of the small refrigerator that has used combustible refrigerant.

Background technology

Fig. 4 is the existing sketch that has the refrigerator of freezing loop that TOHKEMY 2002-318056 communique is put down in writing.The main body 2 of refrigerator 1 is by the outer container 3 of the steel plate system of opening forwardly; Maintain the compartment of terrain be assembled in the outer container 3, case in opening plastic forwardly; And the expanded polyurethane heat-insulating material that is filled between outer container 3 and interior case constitutes.The bottom is provided with Machine Room 4 in the wings, and has taken in freezing loop, and the cold-producing medium of the high-temperature of discharging from compressor 5 is during the condenser unit 6 that is made of the pipe arrangement of concentrating of flowing through, and the cooling air by cooling fan 7 promotes heat radiation.The lowered cold-producing medium of the temperature radiating tube 8 on the front openings flange part that is arranged at outer container 3 of flowing through, thereby condensing of preventing to produce because of the difference of the temperature inside the box and external air temperature.

Fig. 5 is other existing sketch that has the refrigerator of freezing loop that Japanese kokai publication hei 7-146054 communique is put down in writing.The main body 2A of refrigerator 1A is by the outer container 3A of the steel plate system of opening forwardly; Maintain the compartment of terrain be assembled in outer container 3A, case in opening plastic forwardly; And the expanded polyurethane heat-insulating material that is filled between outer container 3A and interior case constitutes.The bottom is provided with Machine Room 4A in the wings, and has taken in freezing loop.The cold-producing medium of the high-temperature of discharging from compressor 5A, flowing through impregnated in defrost water with a part and accepts the radiating tube 10A that the mode at the interior end of the water storage ware 9A of usefulness is mounted.During this period, cold-producing medium carries out heat exchange with the defrost water that is stored among the water storage ware 9A, and promotes heat radiation by the cooling air of cooling fan 7A.The lowered cold-producing medium of the temperature radiating tube 8A on the front openings flange part that is arranged at outer container 3A that flows through, thereby condensing of preventing to produce because of the difference of the temperature inside the box and external air temperature.

In above-mentioned existing refrigerator, the pipe arrangement of the freezing loop in the Machine Room of compressor etc. is taken in the welding of a plurality of positions, thus the part that cold-producing medium may leak is more.

Again, in order to realize the save spaceization of refrigerator, each parts is arranged in the confined space that is provided with freezing loop closely.In such refrigerator, following possibility is arranged: owing to the heat that produces at mechanical interior space internal cause compressor of closing or condenser etc. is difficult to the diffusion heat radiation, the temperature in the Machine Room rises, so operating efficiency reduces; Under the situation that cold-producing medium leaks, cold-producing medium is full of in the Machine Room again, thereby this high state of refrigerant concentration continues more longways.

Summary of the invention

Refrigerator has refrigerator body; The freezing loop that combustible refrigerant circulated; And be used to the water storage ware accepting defrost water and make its evaporation.Freezing loop has the condenser that is made of the radiating tube that is configured in the refrigerator body; Compressor; Pressure reducer; And evaporimeter.The water storage ware is configured in the top of compressor, accepts the defrost water that comes from evaporimeter and makes its evaporation.

Even at this refrigerator is under the situation of the so-called small refrigerator below the capacity 200L, also can prevent the leakage of cold-producing medium, can realize simplicity, energy-conservationization and the low cost of freezing loop.

Description of drawings

Fig. 1 is the Machine Room portion sketch of the refrigerator in the embodiments of the present invention 1.

Fig. 2 is the sketch of the refrigerator in the embodiments of the present invention 2.

Fig. 3 is the sketch of the refrigerator in the embodiments of the present invention 3.

Fig. 4 is the sketch of existing refrigerator.

Fig. 5 is the sketch of other existing refrigerator.

Symbol description

11 refrigerator bodies

12 Machine Rooms

13 compressors

14 radiating tubes

15 condensers

18 coolers

19 freezing loops

20 cold-producing mediums

21 water storage wares

22 operation controllers

23 control substrate microcomputer assembling sections

24 control substrate microcomputers

25 double-deck rib walls

26 cooling tubes

28 heaters

The specific embodiment

(embodiment 1)

Fig. 1 is the sketch of the refrigerator in the embodiments of the present invention 1.Be provided with Machine Room 12 in a rear lower portion opposite with the door in the place ahead of refrigerator body 11.In Machine Room 12, constitute freezing loop 19 as follows: from compressor 13 via the condenser 15 that forms by a part that is set at the radiating tube 14 in the refrigerator body 11, pipe arrangement on drier 16, capillary 17 turns back to compressor 13 from the cooler 18 that is arranged in the not shown cooling chamber that goes out then.Combustible refrigerant 20 circulates in freezing loop 19.Again, be provided with defrost water water storage ware 21, be provided with operation controller 22 on the next door of compressor 13 with the shape for lugs 21a that forms towards the rear on the top of compressor 13.

The then explanation action of the refrigerator of formation as described above.

15 of the condensers of freezing loop 19 are made of the radiating tubes 14 that are arranged in the refrigerator body 11.All the time, thus the defrost water that the part of radiating tube be impregnated in be stored in the water storage ware and make the warm braw circulation make Defrost water evaporating with fan.In the refrigerator of embodiment 1, because utilize the discharging heat of compressor 13 to make the Defrost water evaporating of the water storage ware 21 that is arranged at its top, so the position of welding pipe arrangement is less, thereby combustible refrigerant 20 is difficult to leak because of impacting to wait.

All the time, dispose in Machine Room 12 condenser unit concentrating and be configured or a part and impregnated in the radiating tube at the interior end that defrost water is accepted the water storage ware of usefulness again.In the refrigerator of embodiment 1, because entire heat dissipation pipe 14 is set in the refrigerator body 11, so can be with the designs simplification of low cost with freezing loop, thereby can widen the confined space in the Machine Room 12 that is provided with freezing loop 19, the thermal capacitance that produces because of the heat generating components of compressor 13 grades easily spreads heat radiation.With this, suppress the rising of the temperature in the Machine Room 12, operating efficiency improves, and consumed power reduces.

In embodiment 1,, dispose to have and more be projected into the water storage ware 21 of the shape for lugs 21a at rear than being configured in pipe arrangements in the Machine Room 12 on the top of compressor 13 again.Even when the installation of refrigerator body 11, on wall, push, thereby also can't run into the pipe arrangements in the Machine Room 12 but the shape for lugs 21a that at first runs into water storage ware 21 goes up casing 11 stops.That is, because shape for lugs 21a protection pipe arrangement can be directly not injured or be impacted, so can make Machine Room 12 become the space of opening to the outside.Thereby, even combustible refrigerant 20 leaks, also can spread apace, thereby its concentration reduces, and has reduced the danger of catching fire.

Again, the refrigerator in the embodiment 1 is being that the rated consumption power of motor of compressor is under the situation of the so-called small refrigerator below the 80W, because the caloric value of compressor is few, so do not need the cooling-part of the fan etc. of cooling compressor.Again because heat generating components is few, so, also can reduce the danger of catching fire even combustible refrigerant leaks.

Again, the refrigerator in the embodiment 1, be specified internal capacity under the situation of the so-called small refrigerator below the 200L, smaller to the caloric receptivity in the refrigerator.Thereby, can reduce heat dissipation capacity corresponding to this less caloric receptivity, thereby can only constitute condenser by the radiating tube that is arranged in the refrigerator body.Thereby, can reduce the welding position of the pipe of freezing loop, thereby combustible refrigerant is difficult to leak, and just can reduce the danger of catching fire with this.

Again, refrigerator body 11 inside are divided up and down and constituted refrigerating chamber and refrigerating chamber, come refrigerated compartment and refrigerating chamber with cooler 18.Also can control the ON-OFF running of compressor 13 with being provided to Temperature Detector in the refrigerating chamber (not shown go out).With this, owing to can cut down the adjuster (damper) that is used to control refrigerating chamber etc., thereby can realize low cost, and because except that near the cooler that is disposed at refrigerating chamber, in the refrigerating chamber of dividing in addition, have Temperature Detector, even so combustible refrigerant leaks from cooler, its danger of catching fire also reduces, thereby safe.

(embodiment 2)

Fig. 2 is the sketch of the operation controller 22 of the refrigerator in the embodiments of the present invention 2.Operation controller 22 is made of the main body 22a and the cap 22b of the parts of taking in control substrate etc.Main body 22a is divided into the several segments that is used to take in and fix each parts.With the part of the cap 22b of the top butt of the outer peripheral sidewall 23a that takes in control substrate microcomputer (control part) 24 section 23 on be formed with double-deck rib wall 25.

The action of the refrigerator that has the operation controller 22 that constitutes as described above then, is described.

The parts of control substrate microcomputer 24 grades are contained and are fixed among the main body 22a of operation controller 22, and airtight with cap 22b.The outer peripheral sidewall 23a that takes in the section 23 of control substrate microcomputer 24 is fixed to be clamped into the mode that is arranged on the double-deck rib wall 25 on the cap 22b, and section 23 is by airtight airtightly.Even be provided with at combustible refrigerant 20 under the situation of Machine Room 12 internal leakages of operation controller 22, because section 23 cuts off with extraneous air, so can reduce the danger of catching fire.

Again, in embodiment 2, because to control the cooling that substrate microcomputer 24 is controlled in the refrigerator, so in refrigerator, only dispose contactless unit in order to control.The temperature control of being undertaken by prior mechanical contact thermostat can not suppress contact portion generation spark.Thereby, even at combustible refrigerant 20 under the welding position leakage situation of the pipe of cooler 18, also can reduce the danger of catching fire.

Again, by being set at the airtight section 23 of the operation controller 22 in the Machine Room 12, control substrate microcomputer 24 just needs not to be the explosion-proof reply parts of high price, so simplicity that can implementation structure is with low-cost.

(embodiment 3)

Fig. 3 is the sketch of the cooling chamber portion of the refrigerator in the embodiments of the present invention 3.In Fig. 3, crooked jointless 1 pipe 26, its openings at two ends is positioned at the same side.Thereby cooling tube 26 is inserted into formation cooler 18 cooling fins 27 that is punched with a pattern from a side.Below cooler 18, dispose the bimetallic tube heater 28 of defrosting.Bimetallic tube heater 28 has heating heater winding 28a, covers the first glass tube 28b of heating heater winding 28a covering and accompanies air layer and cover the second glass tube 28c of the first glass tube 28b.

The action of the refrigerator that then, constitutes like that more than the explanation.

Because the cooling tube 26 of cooler 18 is made of a jointless pipe, so can reduce the welding position of pipe arrangement.Thereby, because combustible refrigerant 20 is difficult to leakage, so can reduce the danger of catching fire.

Because heating heater winding 28a is accompanied the glass tube sealing of the bilayer of air layer, so adstante febre also can suppress the rising of the surface temperature of defrosting heater 28.Thereby even under the situation that combustible refrigerant 20 leaks from the welding position of the pipe arrangement of cooler 18, the surface of heater 28 does not reach ignition temperature yet, thereby can reduce danger.

Again, the refrigerator of embodiment 3 is specified internal capacity so-called small refrigerators below 200L.Because the amount of cooling water in the refrigerator is smaller, so can make the cooler miniaturization, can reduce the enclosed volume of cold-producing medium corresponding to amount of cooling water, thereby safe.Also can suppress the caloric value of defrosting heater by the miniaturization of cooler 18, can reduce the surface temperature of glass tube 28c.Thereby even combustible refrigerant leaks from cooler, the danger of catching fire also reduces, thereby safe.

Industrial applicibility

Refrigerator of the present invention uses combustible refrigerant, can pass through the freezing of safe and succinct structure Loop is realized energy-conservation, low-cost.

Claims (8)

1. refrigerator, wherein

Have:

Refrigerator body;

The freezing loop that combustible refrigerant circulated, it has condenser, compressor, pressure reducer and the evaporimeter that is made of the radiating tube that is configured in the described refrigerator body;

The water storage ware, the top that it is configured in described compressor is used to accept the defrost water that comes from described evaporimeter and makes its evaporation.

2. refrigerator as claimed in claim 1, wherein,

Also have:

Refrigerating chamber in the described refrigerator body;

Refrigerating chamber in the described refrigerator body;

Temperature Detector, it is configured in the described refrigerating chamber, detects the temperature in the described refrigerating chamber;

Control part is controlled described compressor based on described detected temperature.

3. refrigerator as claimed in claim 2, wherein,

Also have operation controller, it has the double-deck rib wall that forms the airtight section of taking in described control part,

Described refrigerator body has the Machine Room of taking in described compressor,

Described operation controller is set in the described Machine Room.

4. refrigerator as claimed in claim 3, wherein,

Described Machine Room is open in the wings space.

5. refrigerator as claimed in claim 1, wherein,

Also have the Defrost heater of the below that is configured in described evaporimeter, described Defrost heater has:

Heater strip;

Take in first glass tube of described heater strip;

Take in second glass tube of described first glass tube.

6. refrigerator as claimed in claim 1, wherein,

Described evaporimeter is made of a jointless cooling tube.

7. refrigerator as claimed in claim 1, wherein,

Also have drive described compressor, the motor of rated consumption power below 80W.

8. refrigerator as claimed in claim 1, wherein,

Specified internal capacity is below 200L.

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