A kind of alternating temperature refrigerator
Technical field
The utility model belongs to the refrigerator technical field, particularly a kind of alternating temperature refrigerator.
Background technology
Existing refrigerator is divided into two kinds, and a kind of is alternating temperature freezing and refrigeration cabinet, and another kind is a constant temperature freezing and refrigeration cabinet.Wherein alternating temperature freezing and refrigeration cabinet has only a storeroom, regulates through temperature controller, freezing/cold storage function conversion that storeroom can carry out, and this kind refrigerator only possesses freezing at one time or refrigerates a kind of function, has certain limitation during user's stored goods.Constant temperature freezing and refrigeration cabinet has two storerooms, and the function of these two storerooms is set, and one is the chamber that often keeps in cold storage, and another is normal cold storage room.Though possess the function of freezing and refrigeration simultaneously, often the volume of two storerooms is less, and when the user needed freezing more article, a refrigerator just was difficult to meet the demands, and also has big limitation.
Application number is 200410010337.7 to have announced a kind of refrigerator that can regulate refrigerating chamber and refrigerating chamber volume automatically; This refrigerator is provided with two covers independently refrigeration control and loop control loop; The evaporimeter of two closed circuits is located at the two ends of refrigerator respectively; Be provided with the dividing plate that is divided into space in the refrigerator two-part freezer chamber, the left and right sides in the refrigerator between two evaporimeters, the left and right sides adjustable positions of dividing plate.Through the move left and right of dividing plate, realize the variation of refrigerating chamber volume; This refrigeration system adopts the mode of two temperature controls to realize; Be that freezer has separate temperature sensor; Detect the temperature of freezer chamber through temperature sensor; Can make the temperature of two freezer chambers be controlled at refrigerated storage temperature, cryogenic temperature scope according to being provided with, this freezer refrigerator not only can change refrigerating chamber and refrigerating chamber volume, can also as required this refrigerator be become refrigerator or reach in freezer.But; Refrigerating chamber or the refrigerating chamber be made up of moveable partition board do not have independent sealing; Cause refrigerating chamber to freeze inadequately or refrigerate if not under the particular environment temperature, letting refrigeration and freezing temperature have little time to reach corresponding temperature easily when the user carries out volume adjustment, and complex design needs the double loop to control.
Summary of the invention
There are the problems referred to above in the utility model to existing technology, has proposed a kind of alternating temperature refrigerator, and this alternating temperature refrigerator can be regulated the memory space of freezing and refrigeration according to the situation of reality, and simple in structure, reasonable in design.
The utility model is realized through following technical proposal: a kind of alternating temperature refrigerator; Comprise cabinet, be arranged on the liquid storage cylinder, compressor, condenser, freezer evaporator and the switch room evaporimeter that are in turn connected to form cooling circuit in the cabinet; It is characterized in that described cabinet is divided into several refrigerating chambers and freezing/refrigeration switch room, freezer evaporator is arranged in the refrigerating chamber; The switch room evaporimeter is arranged in freezing/refrigerating chamber; In the switch room evaporimeter, be provided with the freezing and evaporating pipe, freezing and evaporating Guan Yiduan is communicated with the output interface of refrigerator evaporator, can control the road mechanism that changes that this freezing and evaporating pipe conducting closes through one between the other end and the condenser and connect.
Cold-producing medium becomes high pressure-temperature gas after through compressor compresses; Supply with refrigerating evaporator and switch room evaporimeter through condenser cooling becoming high pressure low temperature liquid again; Through changing the regulation and control of road mechanism to the transportation of high pressure low temperature liquid, whether control high pressure low temperature liquid directly supplies with the temperature that the switch room evaporimeter is controlled freezing/refrigeration switch room.When changing road mechanism not during conducting, the refrigerating chamber operate as normal, the freezing and evaporating tube portion work in freezing/refrigeration switch room, this moment, freezing/refrigeration switch room was a refrigerating chamber; When changing the conducting of road mechanism, refrigerating chamber operate as normal then, the freezing and evaporating pipe in freezing/refrigerating chamber switch room is all worked, and this moment, freezing/refrigeration switch room was a refrigerating chamber.This design only realizes freezing/refrigeration conversion with a control loop and closed circuit, simple in structure.
In above-mentioned alternating temperature refrigerator; The described road mechanism that changes comprises magnetic valve and change-over switch; The inlet tube of magnetic valve is communicated with condenser, and the outlet of magnetic valve is communicated with the freezing and evaporating pipe, the coil of magnetic valve be connected in the governor circuit after above-mentioned change-over switch is connected in series.Open and close through change-over switch control magnetic valve are regulated by the cooled high pressure low temperature liquid communication of condenser, and the freezing and evaporating plumber who controls with this in freezing/refrigeration switch room does.
In above-mentioned alternating temperature refrigerator; Described governor circuit comprises attaching plug; Connect successively and be connected on starter, compressor, thermal protector and the temperature controller between two terminals of attaching plug; Two ends at starter are parallel with electric capacity, and above-mentioned magnetic valve and change-over switch are connected between two terminals of attaching plug.Governor circuit also has circuit protection function except that the normal operation function.
In above-mentioned alternating temperature refrigerator; The delivery outlet of described condenser is connected with filter; The delivery outlet of filter is connected with threeway, connects through capillary between the input port of threeway one outlet and refrigerating chamber, and another outlet of threeway is communicated with above-mentioned magnetic valve inlet tube.Shunt a part by the cooled high pressure low temperature liquid of condenser through threeway and be defeated by refrigerating chamber, a part is defeated by freezing/refrigerating chamber.
In above-mentioned alternating temperature refrigerator, connect through capillary between the outlet of said magnetic valve and the freezing and evaporating pipe.Through capillary control height pressure differential and evaporating temperature.
In above-mentioned alternating temperature refrigerator, the indoor temperature of described refrigerating chamber≤-18 ℃, the temperature of freezing/refrigeration switch room indoor temperature when refrigeration is 0 ℃~10 ℃, when transferring to when freezing, indoor temperature≤-18 ℃.
Prior art is compared, and the utility model is in freezing state or is in cold Tibetan state freezing/refrigerating chamber through changing road mechanism, therefore can regulate the memory space of freezing and refrigeration according to the situation of reality; The freezer storage space is big; And it is simple in structure, easy to use, reasonable in design.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model main control circuit part.
Among the figure, 1, liquid storage cylinder; 2, compressor; 3, condenser; 4, freezer evaporator; 5, switch room evaporimeter; 6, freezing and evaporating pipe; 7, magnetic valve; 8, change-over switch; 9, filter; 10, threeway; 11, capillary; 12, attaching plug; 13, starter; 14, thermal protector; 15, temperature controller; 16, electric capacity.
The specific embodiment
Below be the specific embodiment of the utility model, and combine accompanying drawing that the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
Like Fig. 1, shown in 2; This alternating temperature refrigerator comprises cabinet, is arranged on the liquid storage cylinder 1, compressor 2, condenser 3, freezer evaporator 4 and the switch room evaporimeter 5 that are in turn connected to form cooling circuit in the cabinet; Cabinet has two storerooms; Be respectively refrigerating chamber that is provided with freezer evaporator 4 and the freezing/refrigeration switch room that is provided with switch room evaporimeter 5; Be provided with freezing and evaporating pipe 6 in the freezing/switch room evaporimeter 5 of refrigeration in the switch room, freezing and evaporating pipe 6 one ends are communicated with the output interface of refrigerator evaporator, can control the road mechanism that changes that these freezing and evaporating pipe 6 conductings close through one between the other end and the condenser 3 and connect.
Change road mechanism and comprise magnetic valve 7 and change-over switch 8; The delivery outlet of condenser 3 is connected with filter 9; The delivery outlet of filter 9 is connected with threeway 10, connects through capillary between the input port of threeway 10 1 outlets and refrigerating chamber, and another outlet that the inlet tube of magnetic valve 7 connects threeway 10 is communicated with condenser 3; The outlet of magnetic valve 7 is communicated with freezing and evaporating pipe 6 through capillary, the coil of magnetic valve 7 be connected in the governor circuit after change-over switch 8 is connected in series.
Governor circuit comprises attaching plug 12; Connect successively and be connected on starter 13, compressor 2, thermal protector 14 and the temperature controller 15 between 12 two terminals of attaching plug; Be parallel with electric capacity 16 at the two ends of starter 13, magnetic valve 7 and change-over switch 8 are connected between two terminals of attaching plug 12.
Cold-producing medium becomes gases at high pressure after compressing through compressor 2; Become high pressure low temperature liquid through condenser 3 coolings again; High pressure low temperature liquid filters through filter 9 and shunts through threeway 10; Loop condition in the refrigerating chamber: an inlet tube of threeway 10 is connected with filter 9; Threeway 10 first outlets connect capillary 11 and are communicated with freezing and evaporating pipe 6, and the high pressure low temperature flow of liquid, becomes low-pressure gas again behind the cold-producing medium absorption heat and loops back compressor 2 after freezer evaporator 8 freezes through capillary 11 throttlings.
Freezing/refrigeration switch room loop condition: threeway 10 second outlets connect magnetic valve 7; Magnetic valve 7 connects capillary 11 and connects switch room evaporimeter 5; Whether the high pressure low temperature liquid of switch control after filtering according to magnetic valve 7 flows to switch room evaporimeter 5; When magnetic valve 7 cut out, high pressure low temperature liquid all flowed to remaining part switch room evaporimeter 5 refrigeration of flowing through in freezer evaporator 4 backs, and freezing/refrigeration switch room of this moment has cold storage function; When magnetic valve 7 is opened, be throttled to switch room evaporimeter 5 through magnetic valve 7 through capillary 11 through filtered high pressure low temperature liquid and freeze into low-pressure gas and loop back compressor 2, freezing/refrigeration switch room of this moment has freezing function.
The temperature controller control refrigerating chamber of this alternating temperature refrigerator, thus reach the purpose of controlling normal refrigerating chamber indoor temperature scope through the duty of the adjusting of the temperature control knob on Spin Control panel temperature controller.When shift knob is allocated to " freezing/freezing " state; Magnetic valve 7 is connected simultaneously in the system; Freezer evaporator 4 and freezing/refrigeration switch room evaporimeter 5 full entry work are formed a system circuit, and at this moment freezing/refrigeration switch room is selected as refrigerating chamber and uses.When shift knob is allocated to " freezing/refrigeration " state; Magnetic valve 7 outages are not worked in the system; Freezer evaporator 4 and with freezer evaporator 4 direct coupling parts freezing/refrigeration switch room evaporimeter 5 works; Form a system circuit, at this moment freezing/refrigeration switch room is selected as the conventional refrigeration chamber and uses.Thereby reach the purpose of freezing/refrigeration switch room function conversion.
Thereby control the function of freezing/refrigeration switch room through the duty that switch removes to control magnetic valve.When shift knob is allocated to " freezing/freezing " state, magnetic valve energising work in the system, at this moment freezing/refrigeration switch room is selected as conventional freezing chamber (indoor temperature≤-18 ℃) and uses.This moment, this refrigerator was complete freezing refrigerator, and promptly two storerooms all are refrigerating chamber.When shift knob was allocated to " freezing/refrigeration " state, the magnetic valve outage was not worked in the system, and at this moment freezing/refrigeration switch room is selected as conventional refrigeration chamber (0 ℃~10 ℃ of indoor temperatures) and uses.This moment, this refrigerator was the conventional refrigeration reach in freezer, and promptly a storeroom is a refrigerating chamber, and another storeroom is a refrigerating chamber.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as liquid storage cylinder 1, compressor 2, condenser 3, freezer evaporator 4, switch room evaporimeter 5, freezing and evaporating pipe 6, magnetic valve 7, change-over switch 8, filter 9, threeway 10, capillary 11, attaching plug 12, starter 13, thermal protector 14, electric capacity 15 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.