CN104236150A

CN104236150A - Structure of freezer

Info

Publication number: CN104236150A
Application number: CN201310239330.1A
Authority: CN
Inventors: 廖荣燊
Original assignee: EVEREST Co Ltd
Current assignee: EVEREST Co Ltd
Priority date: 2013-06-17
Filing date: 2013-06-17
Publication date: 2014-12-24
Anticipated expiration: 2033-06-17
Also published as: CN104236150B

Abstract

The invention discloses a structure of a freezer. The structure comprises a freezing device and a defrosting device. The freezing device comprises a compressor, a condenser, a first channel, a liquid reservoir, a heat exchanger, a second channel, a first freezing electromagnetic valve, a first expansion valve, a pipe cooling type evaporator, a fifth channel, a third channel, a second freezing electromagnetic valve, a second expansion valve, an eighth channel, an air cooling type evaporator and a fourth channel; the defrosting device is provided with a microswitch, a chamber door opening relay, a high and low-pressure switch, a compressor electromagnetic switch, a delay relay, a setting timer, a defrosting timer, a defrosting conversion contactor, a seventh channel and a defrosting reset temperature switch. The structure has the advantages that hot air and moisture carried by the hot air in a chamber can be absorbed by the air cooling type evaporator, and accordingly the internal freezing capacity and efficiency of the chamber can be improved.

Description

The structure of refrigerator

Technical field

The invention relates to a kind of structure of refrigerator, especially can draw and enter hot-air in the body of storehouse and its aqueous vapor of carrying under one's arms, to improve freeze capacity in the body of storehouse and efficiency.

Background technology

Generally freezing/Tibetan system, consist predominantly of a compressor, condenser, expansion valve and an evaporimeter, utilizing pipeline to be connected to form one can provide the loop that refrigerant circulation flows to form; Wherein, it is indoor that this evaporimeter is provided at freezing/Tibetan, make by the conveying of compressor the liquid refrigerants heat that absorption refrigerating/Tibetan is indoor because of low-temperature evaporation entering evaporimeter, make freezing/room, Tibetan form a low-temperature condition, to reach, freezing/Tibetan object is carried out to the indoor food in freezing/Tibetan or article.This evaporimeter, ventilation type evaporimeter in early days, be provided with circulating fan with forced air supply endless form, the drive air flowing made, and make the heat exchanger coil in the air of freezing/room, Tibetan and ventilation type evaporimeter carry out heat exchange, because the motor running of this circulating fan can generate heat, and, the air-flow sent of this circulating fan also can because of friction heat-dissipating, therefore can cause freezing/hiding indoor temperature rises, therefore, this freezing/Tibetan system is because continuous running having the disappearance of very power consumption in order to cooling; Moreover it is with the circulation of circulating fan forced air supply, so the temperature of air outlet and air intake vent has the uneven disappearance of temperature of the temperature difference of four degree Celsius; Based on above-mentioned many disappearances, in recent years this ventilation type evaporimeter replace by pipe cooled evaporimeter; This pipe cooled evaporimeter, be in freezing/hide indoor top to be installed with one and to become radial separation to be arranged at the fin of this pipeline external surface for the pipeline of liquid refrigerants flowing and several pieces, therefore two side surfaces of several fin and the outer surface of pipeline all can provide cold energy and be placed in freezing/chilled food of hiding indoor and carry out heat exchange; Because the pipeline being provided with several fin is each region being fixedly arranged on indoor top, freezing/Tibetan, cold air declines naturally, reach the refrigeration of comprehensive homogenising, therefore, if freezing/indoor, Tibetan are provided with pipe cooled evaporimeter and namely can re-use circulating fan, so, effectively solve the disappearance of above-mentioned this kind of ventilation type evaporimeter; But, because the temperature of several fin two side surface and pipeline external surface is about-20 DEG C ~-50 DEG C, all can provide cold energy be placed in freezing/hides indoor chilled food carry out heat exchange, therefore, open freezing/hide the door of room and the moisture that enters indoor hot-air and its aqueous vapor of carrying under one's arms and thing to be frozen will condense into frost in the outer surface of two side surfaces of several fin and pipeline, and the efficiency affecting heat exchange just as one deck obstruct can be built up; Therefore, for maintain freezing/hide the normal operation of system, be must be in good time defrosting operation is carried out to two side surfaces of several fin and the outer surface of pipeline.Defrost mode at present for two side surfaces of several fin and the outer surface of pipeline comprises compressor stop method, hot refrigerant steam defrosting (Hot gas defrost) and watering defrosting, these methods all can cause freezing/hide the moist and chilled food in indoor ground to be mixed the situation injured by a crashing object by the white block dropped, therefore undesirable.Therefore, how can draw the moisture entering hot-air in the body of storehouse and its aqueous vapor of carrying under one's arms and thing to be frozen, improve defrosting efficiency with the freeze capacity that improves refrigerator with efficiency, effectively the above-mentioned disappearance of solution, becomes the motivation place that the present invention grinds wound.

Summary of the invention

The present inventor amasss the experience be engaged in for many years and manufactured freezing equipment, and through repeatedly testing and improving, finally makes the structure of a kind of refrigerator of the present invention be born.Main purpose of the present invention provides a kind of can draw the moisture entering hot-air in the body of storehouse and its aqueous vapor of carrying under one's arms and thing to be frozen, with the structure of the refrigerator of the freeze capacity and efficiency that improve refrigerator for aforementioned disappearance.

For reaching above-mentioned purpose, the technology used in the present invention means are: a kind of structure of refrigerator, comprise a refrigerating plant and a defroster, this refrigerating plant includes the compressor of an output and an input, one condenser having an input and an output, first path of the one connection output of compressor and the input of condenser, one liquid reservoir having an input and an output, one heat exchanger, one alternate path, one the first freezing magnetic valve being fixedly arranged on alternate path, one is fixedly arranged on alternate path and is positioned at first expansion valve in the downstream of the first freezing magnetic valve, one and the first pipe cooled evaporimeter of communicating downstream of expansion valve, one with the five-way road of pipe cooled evaporimeter communicating downstream, one to be communicated with alternate path and to be positioned at the third path of the upstream of the first freezing magnetic valve, one the second freezing magnetic valve being fixedly arranged on third path, one is fixedly arranged on third path and is positioned at second expansion valve in the downstream of the second freezing magnetic valve, one and second the 8th path of communicating downstream of expansion valve, the ventilation type evaporimeter of the communicating downstream of the one and the 8th path, one is communicated with the downstream of ventilation type evaporimeter and the 4th path on five-way road, with a storehouse temperature switch with one first contact and one second contact, wherein, the input of this liquid reservoir is communicated with the output of condenser, and the output of liquid reservoir is communicated with alternate path, or the output of liquid reservoir is communicated with the input pipe of the exterior bowl of heat exchanger, this heat exchanger includes the inner drum that an exterior bowl and is fixedly arranged on exterior bowl upper surface, the upper surface of exterior bowl is provided with an input pipe that can be connected mutually with the output of liquid reservoir, and the lower surface of exterior bowl is provided with an efferent duct, the upper end of inner drum be provided with one with the input pipe of the 5th communication and an efferent duct be communicated with the input of compressor, this pipe cooled evaporimeter system forms by a pipe fitting, several outer wall being shaped in this pipe fitting radial fin and to be fixedly arranged on the top end face in freezer fixed mount for pipe fitting or fin combine and formed, one end of this pipe fitting and the communicating downstream of the first expansion valve, the other end of pipe fitting and the 5th communication, this ventilation type evaporimeter, mainly includes a casing being fixedly arranged on the top end face in freezer, multiple fan be fixedly arranged on casing, copper pipe row and be fixedly arranged in casing is fixedly arranged on bottom half and is installed with the water-collecting tray of a drainpipe, this copper pipe row is provided at fan rear, and laterally penetrates roundabout in copper pipe row with refrigerant pipe, and the refrigerant through compressor compression then imports in refrigerant pipe by top, this water-collecting tray system is arranged at the bottom of casing, by the setting of this water-collecting tray, moisture can be collected and be got rid of by drainpipe, again, the pipe fitting of pipe cooled evaporimeter is installed with one to have one first contact and one second contact storehouse temperature switch in order to the refrigerant temperature detected in pipe cooled evaporimeter coolant path, again, pipe cooled evaporimeter has additional one and is positioned at the first pipe cooled evaporimeter of the communicating downstream of the 3rd expansion valve with the 3rd expansion valve and that the 6th path, be communicated with between the first freezing magnetic valve of alternate path with the first expansion valve is positioned at the downstream of the 6th path, this first pipe cooled evaporimeter system forms by a pipe fitting, several outer wall being shaped in this pipe fitting radial fin and to be fixedly arranged on the top end face in freezer fixed mount for the pipe fitting of the first pipe cooled evaporimeter or fin combine and formed, one end of the pipe fitting of this first pipe cooled evaporimeter and the communicating downstream of the 3rd expansion valve, the other end of the pipe fitting of the first pipe cooled evaporimeter and the 5th communication, this defroster has the microswitch that is provided with one first contact and one second contact, the one Kai Kumen relay being provided with a coil and one first contact and one second contact and one the 3rd contact and one the 4th contact, one high-low pressure switch, one has an overload protective device and a coil and the compressor electromagnetic switch be electrically connected, one time-delay relay with a contact, the one setting timer being provided with one first contact and one second contact, one defrost timer being provided with one first contact and one second contact, the one defrosting conversion contactor having a coil and one first contact and one second contact and one the 3rd contact and one the 4th contact, one is installed with a defrosting magnetic valve in order to block or not block the 7th path of the high pressure-temperature gaseous coolant circulation in the 7th path, the one defrosting involution temperature switch being provided with a fixed contact and one first contact and one second contact, the entrance of storehouse body is located at by this microswitch, and the second contact of the first contact of the first contact of microswitch and Kai Kumen relay coil and Kai Kumen relay and the contact of time-delay relay and Kai Kumen relay is electrically connected, the contact of the second contact of microswitch and time-delay relay and time-delay relay is electrically connected, the contact of time-delay relay and the first contact of Kai Kumen relay are electrically connected, the fan of the second contact of Kai Kumen relay and the second freezing magnetic valve and condenser and the 3rd contact of Kai Kumen relay are electrically connected with the coil of first and the defrost timer and defrosting magnetic valve and the conversion contactor that defrosts that set timer, because of the conducting of the first contact of setting timer or non-conducting, and the second freezing magnetic valve start can be made and opens or close third path, first contact of the 3rd contact of Kai Kumen relay and setting timer and set the second contact of timer and the fan of ventilation type evaporimeter and high-low pressure switch and storehouse temperature switch and be electrically connected, second contact of setting timer the 4th contact that is multiple and Kai Kumen relay is electrically connected, 4th contact of Kai Kumen relay is multiple to be electrically connected with the first freezing magnetic valve, because of the conducting of the second contact of setting timer or non-conducting, and the first freezing magnetic valve start can be made and opens or close alternate path, the contact of high-low pressure switch and storehouse temperature switch and Kai Kumen relay and the coil of compressor electromagnetic switch and overload protective device are electrically connected, first contact of defrost timer is electrically connected with the 3rd contact of the conversion contactor that defrosts with the first contact of defrosting involution temperature switch and the first contact of the conversion contactor that defrosts, second contact of defrost timer is electrically connected with the 4th contact of defrosting conversion contactor, first contact of defrosting conversion contactor is electrically connected with the 3rd contact of the conversion contactor that defrosts with the fixed contact of defrosting involution temperature switch and the first contact of the involution temperature switch that defrosts, the fan of defrosting the second contact of conversion contactor and the fan of the second freezing magnetic valve and condenser and ventilation type evaporimeter and the 4th contact of the conversion contactor that defrosts are electrically connected, 3rd contact of defrosting conversion contactor is electrically connected with defrosting magnetic valve, the coil of defrosting conversion contactor is electrically connected with the fixed contact of defrosting involution temperature switch and the first contact of the conversion contactor that defrosts, the first end of the 7th path and the first communication between refrigerant condenser and condenser, second end of the 7th path and the 8th communication between the second expansion valve and ventilation type evaporimeter, because of the conducting of the first contact of defrost timer or non-conducting, and can make the start of defrosting magnetic valve and open or close the 7th path, again, this compressor solenoid winding and microswitch, Kai Kumen relay coil, high-low pressure switch, time-delay relay, setting timer, defrost timer, defrosting conversion contactor, defrosting between magnetic valve and storehouse temperature switch is provided with a manual selection switch.

The present invention can not cause freezing/to hide indoor ground moist, and chilled food also can not be caused to be mixed the situation injured by a crashing object by the white block dropped, ideal.

Accompanying drawing explanation

Fig. 1: the system diagram of refrigerator structure of the present invention;

Fig. 2: the present invention is freezing/hide the right side view of room;

The 3-3 line sectional view of Fig. 3: Fig. 2;

Fig. 4: the circuit diagram of the freezing operation of the pipe cooled evaporimeter of the present invention;

Fig. 5: the present invention is freezing/circuit diagram of the freezing operation of ventilation type evaporimeter that is opened of the door of hiding room;

Fig. 6: the present invention is freezing/hide the circuit diagram of the freezing operation of door pent ventilation type evaporimeter of room;

Fig. 7: the circuit diagram of the freezing operation of ventilation type evaporimeter of the present invention;

Fig. 8: the present invention defrosts the circuit diagram of operation;

Fig. 9: the circuit diagram of the freezing operation of ventilation type evaporimeter that the present invention has defrosted;

Figure 10: the circuit diagram of the not freezing operation of the present invention.

Description of reference numerals:

1 refrigerating plant; 111 outputs; 112 inputs; 11 compressors; 121 input 122 outputs; 12 condensers; 10a first path; 10b alternate path; 10c third path; 10d the 4th path; 10e five-way road; 10f the 6th path; 10g the 8th path; 13 liquid reservoirs; 131 inputs; 132 outputs; 14 heat exchangers; 141 exterior bowls; 142 inner drums; 143 input pipes; 144 efferent ducts; 145 input pipes; 146 efferent ducts; The freezing magnetic valve of 15a first; The freezing magnetic valve of 15b second; 16a first expansion valve; 16b second expansion valve; 16c the 3rd expansion valve; 17 fans; 18 storehouse temperature switches; 181 first contacts; 182 second contacts; 2 pipe cooled evaporimeters; 21 pipe fittings; 22 fins; 23 fixed mounts; The pipe cooled evaporimeter of 2a first; 21a pipe fitting; 22a fin; 23a fixed mount; 3 ventilation type evaporimeters; 31 casings; 32 fans; 33 copper pipe rows; 34 water-collecting trays; 35 drainpipes; 4 defrosters; 41 microswitches; 411 first contacts; 412 second contacts; 421 Kai Kumen relay coils; 422 first contacts; 423 second contacts; 424 the 3rd contacts; 425 the 4th contacts; 43 high-low pressure switches; 441 overload protective devices; 442 compressor solenoid windings; 443 compressor contact of electromagnetic switch; 45 time-delay relays; 451 time-delay relay contacts; 46 setting timers; 461 first contacts; 462 second contacts; 47 defrost timers; 471 first contacts; 472 second contacts; 480 defrosting conversion contactor coils; 481 defrosting conversion contactor first contacts; 482 defrosting conversion contactor second contacts; 483 defrosting conversion contactor the 3rd contacts; 484 defrosting conversion contactor the 4th contacts; 49 the 7th paths; 490 defrosting magnetic valves; 491 first ends; 492 second ends; 400 fixed contacts; 401 first contacts; 402 second contacts; 40 defrosting involution temperature switches; 5 freezers; 6 manual selection switch.

Detailed description of the invention

In order to aforementioned and other objects of the present invention, feature & benefits can more obviously be understood, preferred embodiment of the present invention cited below particularly, and coordinate institute's accompanying drawings, elaborate.Refer to Fig. 1,2, shown in 3 and Figure 10, the present invention mainly provides a kind of structure of refrigerator, comprises refrigerating plant 1 and a defroster 4, this refrigerating plant 1 includes the compressor 11 that is provided with an output 111 and an input 112, one condenser 12 being provided with an input 121 and an output 122 and a fan 17, first path 10a of the one connection output 111 of compressor 11 and the input 121 of condenser 12, one liquid reservoir 13 having an input 131 and an output 132, one can provide the liquid refrigerants of a more cryogenic condensation to enter expansion valve 16a, 16b, a 16c and overheated vaporizing refrigerant can be provided to enter heat exchanger 14 in compressor 11, one alternate path 10b, one is fixedly arranged on the suitable place of alternate path 10b and can blocks or the refrigerant do not blocked in alternate path 10b flow to the first freezing magnetic valve 15a of pipe cooled evaporimeter 2, the suitable place in one downstream being fixedly arranged on alternate path 10b and being positioned at the first freezing magnetic valve 15a also can by the first expansion valve 16a of liquid refrigerants expansion process, one and the first pipe cooled evaporimeter 2 of communicating downstream of expansion valve 16a, one with the five-way road 10e of pipe cooled evaporimeter 2 communicating downstream, one to be communicated with alternate path 10b and to be positioned at the third path 10c at suitable place of upstream of the first freezing magnetic valve 15a, one is fixedly arranged on the suitable place of third path 10c and can blocks or the refrigerant do not blocked in third path 10c flow to the second freezing magnetic valve 15b of ventilation type evaporimeter 3, the suitable place in one downstream being fixedly arranged on third path 10c and being positioned at the second freezing magnetic valve 15b also can by the second expansion valve 16b of liquid refrigerants expansion process, one and second the 8th path 10g of communicating downstream of expansion valve 16b, the ventilation type evaporimeter 3 of the communicating downstream of the one and the 8th path 10g, one is communicated with the downstream of ventilation type evaporimeter 3 and the 4th path 10d of five-way road 10e, with a storehouse temperature switch 18 with one first contact 181 and one second contact 182, wherein, the input 131 of this liquid reservoir 13 is communicated with the output 122 of condenser 12, the output 132 of liquid reservoir 13 is communicated with alternate path 10b, or as shown in Figure 1, the output 132 of liquid reservoir 13 is communicated with the input pipe 143 of the exterior bowl 141 of heat exchanger 14, this heat exchanger 14 includes a closed container is fixedly arranged on exterior bowl 141 upper surface closed container in order to the exterior bowl 141 and stored from the low temperature liquid refrigerant of liquid reservoir 13 in order to store high-temperature gas refrigerant from five-way road 10e as the inner drum 142 of gas-liquid separator, the upper surface of exterior bowl 141 is provided with an input pipe 143 that can be connected mutually with the output 132 of liquid reservoir 13, the lower surface of exterior bowl 141 is provided with an efferent duct 144 that can be communicated with expansion valve 16a, 16b, 16c, makes the liquid refrigerants of liquid reservoir 13 can enter expansion valve 16a, 16b, 16c via exterior bowl 141, the upper end of inner drum 142 is provided with an input pipe 145 be communicated with five-way road 10e and an efferent duct 146 be communicated with the input 112 of compressor 11, make cryogenic gaseous refrigerant from pipe cooled evaporimeter and ventilation type evaporimeter 3 via five-way road 10e and input pipe 145, enter inner drum 142 and via efferent duct 146, compressor 11 input 112 and enter compressor 11, the refrigerant in exterior bowl 141 and inner drum 142 is made to carry out heat exchange, in order to save the energy in heat exchanger 14, pipe fitting 21, several outer wall being shaped in this pipe fitting 21 that this pipe cooled evaporimeter 2 circulates for liquid refrigerants by one form radial fin 22 and is fixedly arranged on the top end face in freezer 5 fixed mount 23 for pipe fitting 21 or fin 22 combine and formed, one end of this pipe fitting 21 and the communicating downstream of the first expansion valve 16a, the other end of pipe fitting 21 is communicated with five-way road 10e, when making the liquid refrigerants after expansion process by pipe fitting 21, two side surfaces of pipe fitting 21 outer surface and several fin 22 all can provide cold energy and be placed in freezing/chilled food of hiding indoor and carry out heat exchange, this ventilation type evaporimeter 3 is identical with above-mentioned existing structure, mainly includes the copper pipe row 33 and that is fixedly arranged on the casing 31 of the top end face in freezer 5, multiple fan 32, be fixedly arranged on casing 31 is fixedly arranged in casing 31 and is fixedly arranged on the water-collecting tray 34 being installed with a drainpipe 35 bottom casing 31, this copper pipe row 33 is provided at fan 32 rear, and laterally penetrates roundabout in copper pipe row 33 with refrigerant pipe, and the refrigerant compressed through compressor 11 then imports in refrigerant pipe by top, this water-collecting tray 34 is arranged at the bottom of casing 31, by the setting of this water-collecting tray 34, moisture can be collected and be got rid of by drainpipe 35,

Again, as shown in Fig. 1 and Figure 10, pipe cooled evaporimeter 2 has additional one and is positioned at the first pipe cooled evaporimeter 2a of the communicating downstream of the 3rd expansion valve 16c with the 3rd expansion valve 16c and that the 6th path 10f, be communicated with between the first freezing magnetic valve 15a of alternate path 10b with the first expansion valve 16a is positioned at the downstream of the 6th path 10f; This first pipe cooled evaporimeter 2a forms by a pipe fitting 21a, several outer wall being shaped in this pipe fitting 21a radial fin 22a and to be fixedly arranged on the top end face in freezer fixed mount 23a for the pipe fitting 21a of the first pipe cooled evaporimeter 2a or fin 22a combines and formed; One end of the pipe fitting 21a of this first pipe cooled evaporimeter 2a and the communicating downstream of the 3rd expansion valve 16c, the other end of the pipe fitting 21a of the first pipe cooled evaporimeter 2a is communicated with five-way road 10e;

This defroster 4 has the microswitch 41 that is provided with one first contact 411 and one second contact 412, the one Kai Kumen relay being provided with a coil 421 and one first contact 422 and one second contact 423 and one the 3rd contact 424 and one the 4th contact 425, one high-low pressure switch 43, one has an overload protective device 441 and a coil 442 and the compressor electromagnetic switch be electrically connected, one time-delay relay 45 with a contact 451, the one setting timer 46 being provided with one first contact 461 and one second contact 462, one defrost timer 47 being provided with one first contact 471 and one second contact 472, the one defrosting conversion contactor having a coil 480 and one first contact 481 and one second contact 482 and one the 3rd contact 483 and one the 4th contact 484, one is installed with a defrosting magnetic valve 490 in order to block or not block the 7th path 49 of the high pressure-temperature gaseous coolant circulation in the 7th path 49, the one defrosting involution temperature switch 40 being provided with a fixed contact 400 and one first contact 401 and one second contact 402, the entrance of storehouse body is located at by this microswitch 41, and the unlatching of Yin Kumen and form the connection of the first contact 411 circuit of this microswitch 41 and the closedown of Yin Kumen and form the connection of the second contact 412 circuit of this microswitch 41, first contact 411 of microswitch 41 is electrically connected with the second contact 423 of Kai Kumen relay coil 421 and the first contact 422 of Kai Kumen relay and the contact 451 of time-delay relay 45 and Kai Kumen relay, second contact 412 of microswitch 41 is electrically connected with the contact 451 of time-delay relay 45 and time-delay relay 45, the contact 451 of time-delay relay 45 is electrically connected with the first contact 422 of Kai Kumen relay, 3rd contact 424 of the second contact 423 of Kai Kumen relay and the fan 17 of the second freezing magnetic valve 15b and condenser 12 and Kai Kumen relay is electrically connected with the coil 480 of the first contact 461 and defrost timer 47 and defrost magnetic valve 490 and the conversion contactor that defrosts that set timer 46, because of the conducting of the first contact 461 of setting timer 46 or non-conducting, and the second freezing magnetic valve 15b start can be made and opens or close third path 10c, 3rd contact 424 of Kai Kumen relay and the first contact 461 of setting timer 46 and set the second contact 462 of timer 46 and the fan 32 of ventilation type evaporimeter 3 and high-low pressure switch 43 and storehouse temperature switch 18 and be electrically connected, second contact 462 of setting timer 46 the 4th contact 425 that is multiple and Kai Kumen relay is electrically connected, 4th contact 425 of Kai Kumen relay is multiple to be electrically connected with the first freezing magnetic valve 15a, because of the conducting of the second contact 462 or non-conducting, and the first freezing magnetic valve 15a start can be made and opens or close alternate path 10b, high-low pressure switch 43 and storehouse temperature switch 18 and the contact 424 of Kai Kumen relay and the coil 442 of compressor electromagnetic switch and overload protective device 441 are electrically connected, first contact 471 of defrost timer 47 is electrically connected with the 3rd contact 483 of the first contact 401 of defrosting involution temperature switch 40 and the first contact 481 of the conversion contactor that defrosts and the conversion contactor that defrosts, second contact 472 of defrost timer 47 is electrically connected with the 4th contact 484 of defrosting conversion contactor, first contact 481 of defrosting conversion contactor is electrically connected with the 3rd contact 483 of the fixed contact 400 of defrosting involution temperature switch 40 and the first contact 401 of the involution temperature switch 40 that defrosts and the conversion contactor that defrosts, the fan 32 of defrosting the second contact 482 of conversion contactor and the fan 17 of the second freezing magnetic valve 15b and condenser 12 and ventilation type evaporimeter 3 and the 4th contact 484 of the conversion contactor that defrosts are electrically connected, 3rd contact 483 of defrosting conversion contactor is electrically connected with defrosting magnetic valve 490, the coil 480 of defrosting conversion contactor is electrically connected with the fixed contact 400 of defrosting involution temperature switch 40 and the first contact 481 of the conversion contactor that defrosts, the first end 491 of the 7th path 49 is communicated with the first path 10a between refrigerant condenser 11 and condenser 12, second end 492 of the 7th path 49 is communicated with the 8th path 10g between the second expansion valve 16b and ventilation type evaporimeter 3, because of the conducting of the first contact 471 of defrost timer 47 or non-conducting, and defrosting magnetic valve 490 start can be made and opens or close the 7th path 49, again, as shown in Figure 10, this compressor solenoid winding 442 and microswitch 41, Kai Kumen relay coil 421, high-low pressure switch 43, time-delay relay 45, set timer 46, defrost timer 47, the conversion contactor that defrosts, defrosting between magnetic valve 490 and storehouse temperature switch 18 is provided with a manual selection switch 6, in order to this device of Non-follow control.

Hereby effect of the present invention is described in detail as rear again:

Refer to shown in Fig. 1 and Fig. 4, when carrying out pipe cooled evaporimeter 2 and operating freezing, pressing manual selection switch 6, second contact 182 of storehouse temperature switch 18 and the second contact 462 of setting timer 46 are switched on, and the first freezing magnetic valve 15a opens alternate path 10b and the 3rd expansion valve 16c because of the power supply having the second contact 462 of setting timer 46 and be switched on, meanwhile, there is power supply can start high-low pressure switch 43 because the second contact 182 of storehouse temperature switch 18 is switched on, overload protective device 441, and make compressor solenoid winding 442 by excitatory and start compressor 11 and freeze, make refrigerant after compressor 11 compresses, become the gaseous coolant of HTHP, enter condenser 12 through the first path 10a again and lower the temperature into high normal pressure and temperature liquid refrigerants, then, via liquid reservoir 13, the input pipe 143 of heat exchanger 14 and efferent duct 144, alternate path 10b, first freezing magnetic valve 15a and enter after the first expansion valve 16a and the 3rd expansion valve 16c expand and become low-temp low-pressure liquid refrigerants, again through pipe cooled evaporimeter 2 and the first pipe cooled evaporimeter 2a, by pipe cooled evaporimeter 2 and the first pipe cooled evaporimeter 2a provide cold energy be placed in freezing/hides indoor chilled food carry out heat exchange, again via five-way road 10e, the input pipe 145 of the inner drum 142 of heat exchanger 14 and efferent duct 146, return in refrigerant condenser 11, namely complete once pipe cooled evaporimeter 2 to operate kind of refrigeration cycle flow process.

Refer to shown in Fig. 1 and Fig. 5, when the door of freezing/room, Tibetan is opened, the first contact 411 of microswitch 41 is switched on, and the second contact 412 of microswitch 41 is disconnected, meanwhile, Kai Kumen relay coil 421 is excitatory because of energising, the first contact 422, second contact 423 of Kai Kumen relay and the 3rd contact 424 is switched on, and disconnects the 4th contact 425, first freezing magnetic valve 15a closes because the 4th contact 425 is disconnected, second freezing magnetic valve 15b has power supply can open third path 10c and start the fan 17 of condenser 12 and the fan 32 of ventilation type evaporimeter 3 because the first contact 422, second contact 423 and the 3rd contact 424 are switched on, again, because the second contact 182 of storehouse temperature switch 18 is switched on, and have power supply can conducting high-low pressure switch 43, overload protective device 441, and make compressor solenoid winding 442 by excitatory and start compressor 11 and freeze, make refrigerant after compressor 11 compresses, become the gaseous coolant of HTHP, enter condenser 12 through the first path 10a again and lower the temperature into high normal pressure and temperature liquid refrigerants, then, via liquid reservoir 13, the input pipe 143 of heat exchanger 14 and efferent duct 144, alternate path 10b, third path 10c, and become low-temp low-pressure liquid air cooling matchmaker after entering the second expansion valve 16b expansion, again through the 8th path 10g, ventilation type evaporimeter 3, cold energy is provided to carry out heat exchange by ventilation type evaporimeter 3, again via the 4th path 10d, five-way road 10e, the input pipe 145 of the inner drum 142 of heat exchanger 14 and efferent duct 146, return in refrigerant condenser 11, namely complete a ventilation type evaporimeter 3 to operate kind of refrigeration cycle flow process, owing to being that ventilation type evaporimeter 3 provides cold energy to carry out heat exchange, therefore, the hot-air entered in the body of storehouse is drawn by ventilation type evaporimeter 3 with the moisture of its aqueous vapor of carrying under one's arms and thing to be frozen and condenses into frost, and do not provide cold energy to carry out heat exchange, so pipe cooled evaporimeter 2 can not frosting due to pipe cooled evaporimeter 2.

Refer to again shown in Fig. 1 and Fig. 6, when the door of freezing/room, Tibetan is closed, first contact 411 of microswitch 41 is disconnected, second contact 412 of microswitch 41 is switched on and has power supply can start timing by start-up study relay 45, suppose that the time preset is the contact 451 automatic off delay relay 45 after closing the door five minutes, then after five minutes, the contact 451 of time-delay relay 45 automatically can disconnect ventilation type evaporimeter 3 and to operate kind of refrigeration cycle flow process, and makes pipe cooled evaporimeter 2 into and to operate kind of refrigeration cycle flow process, when the contact 451 of time-delay relay 45 does not disconnect, the power supply that Yin Kaikumen relay coil 421 still has be switched on for five minutes and Kai Kumen relay first contact 422 and the second contact 423 and the 3rd contact 424 are still switched on, the 4th contact 425 is still disconnected, because the first contact 422 and the second contact 423 and the 3rd contact 424 are still switched on and start the fan 17 of condenser 12 and the fan 32 of ventilation type evaporimeter 3, and the second freezing magnetic valve 15b is made to open third path 10c, because the 4th contact 425 is still disconnected, and the first freezing magnetic valve 15a is made to be disconnected and to close, again, because the second contact 182 of storehouse temperature switch 18 is switched on, and have power supply can conducting high-low pressure switch 43 and overload protective device 441, and make compressor solenoid winding 442 by excitatory and start compressor 11 and freeze, make refrigerant after compressor 11 compresses, become the gaseous coolant of HTHP, enter condenser 12 through the first path 10a again and lower the temperature into high normal pressure and temperature liquid refrigerants, then, via liquid reservoir 13, the input pipe 143 of heat exchanger 14 and efferent duct 144, alternate path 10b, third path 10c, and become low-temp low-pressure liquid air cooling matchmaker after entering the second expansion valve 16b expansion, again through the 8th path 10g, ventilation type evaporimeter 3, cold energy is provided to carry out heat exchange by ventilation type evaporimeter 3, again via the 4th path 10d, five-way road 10e, the input pipe 145 of the inner drum 142 of heat exchanger 14 and efferent duct 146, return in refrigerant condenser 11, namely complete a ventilation type evaporimeter 3 to operate kind of refrigeration cycle flow process, being still ventilation type evaporimeter 3 owing to closing the door in five minutes provides cold energy to carry out heat exchange, therefore, enter the hot-air in the body of storehouse and the moisture of its aqueous vapor of carrying under one's arms with thing to be frozen, can be drawn by ventilation type evaporimeter 3 and condense into frost, and do not provide cold energy to carry out heat exchange, so pipe cooled evaporimeter 2 can not frosting due to pipe cooled evaporimeter 2.

Refer to again shown in Fig. 1 and Fig. 7, when there is non-vacuum packaging freezing/indoor, Tibetan can discharges the frozen matter of moisture, pipe cooled evaporimeter 2 and ventilation type evaporimeter 3 cross-reference can be taked depending on actual needs, for example: namely pipe cooled evaporimeter 2 stops after operating five hours, namely setting timer 46 automatically change stops after being operated one hour by ventilation type evaporimeter 3, operates so in turn.Suppose that pipe cooled evaporimeter 2 has operated five hours, now, the first contact 461 of setting timer 46 is switched on, and starts the fan 17 of condenser 12 and the fan 32 of ventilation type evaporimeter 3 and makes the second freezing magnetic valve 15b open third path 10c, meanwhile, second contact 462 is disconnected, first freezing magnetic valve 15a closes, the second contact 182 because of storehouse temperature switch 18 is switched on and has power supply can start high-low pressure switch 43, overload protective device 441, and make compressor solenoid winding 442 by excitatory and start compressor 11 and freeze, make refrigerant after compressor 11 compresses, become the gaseous coolant of HTHP, enter condenser 12 through the first path 10a again and lower the temperature into high normal pressure and temperature liquid refrigerants, then, via liquid reservoir 13, the input pipe 143 of heat exchanger 14 and efferent duct 144, alternate path 10b, third path 10c, and become low-temp low-pressure liquid air cooling matchmaker after entering the second expansion valve 16b expansion, again through the 8th path 10g, ventilation type evaporimeter 3, by ventilation type evaporimeter 3 provide cold energy be placed in freezing/hides indoor chilled food carry out heat exchange, again via the 4th path 10d, five-way road 10e, the input pipe 145 of the inner drum 142 of heat exchanger 14 and efferent duct 146, return in refrigerant condenser 11, namely complete a ventilation type evaporimeter 3 to operate kind of refrigeration cycle flow process, owing to being that ventilation type evaporimeter 3 provides cold energy to carry out heat exchange, therefore, enter the hot-air in the body of storehouse and the moisture of its aqueous vapor of carrying under one's arms with thing to be frozen, still can be drawn by ventilation type evaporimeter 3 and condense into frost, and do not provide cold energy to carry out heat exchange, so pipe cooled evaporimeter 2 can not frosting due to pipe cooled evaporimeter 2.

Refer to again shown in Fig. 1 and Fig. 8, when the time set by defrost timer 47 accumulated the duration of runs and reach by ventilation type evaporimeter 3, namely defrosting operation is activated, first contact 471 of defrost timer 47 is switched on, second contact 472 of defrost timer 47 is disconnected, 3rd contact 483 of the defrosting conversion contactor 48 that power supply is follow connected, open defrosting magnetic valve 490 and open the 7th path 49, high pressure-temperature gaseous coolant is via the first path 10a, the first end 491 of the 7th path 49, second end 492 of the 7th path 49, 8th path 10g and ventilation type evaporimeter 3 carry out defrosting work, heating is carried out to ventilation type evaporimeter 3 surface and melts frosting, and the water produced defrosting is discharged by drainpipe 35 after concentrating on water-collecting tray 34.

Defrost timer 47 refers to shown in Fig. 1 and Fig. 9 again, supposes that the defrosting time set by defrost timer 47 is 15 minutes, so should be just can disconnect in 15 minutes; But, sometimes because of freezing/to hide indoor frosting degree few and completed defrosting in 5 minutes, now, defrost timer 47 can't disconnect immediately after completing defrosting and still self-sustaining just can disconnect after 10 minutes, and connect the second contact 482, recovering ventilation type evaporimeter 3 provides cold energy to carry out heat exchange.Detect ventilation type evaporimeter 3 work that defrosts when defrosting involution temperature switch 40 to complete, first contact 401 of defrosting involution temperature switch 40 is switched on, second contact 402 of defrosting involution temperature switch 40 is disconnected, meanwhile, defrosting conversion contactor coil 480 is because there being power supply can be excitatory, defrosting conversion contactor the 3rd contact 483 and the 4th contact 484 are disconnected, and the first contact 481 and the second contact 482 are switched on, and recovering ventilation type evaporimeter 3 provides cold energy to carry out heat exchange.After ventilation type evaporimeter 3 provides cold energy to carry out heat exchange number minute, defrosting involution temperature switch 40 disconnects the first contact 401 because detecting ventilation type evaporimeter 3 recovers, now, cause the first contact 481 and the second contact 482 still self-sustaining are switched on, and ventilation type evaporimeter 3 still provides cold energy to carry out heat exchange.When defrost timer 47 disconnected after 15 minutes, as shown in Figure 7, first contact 471 is disconnected, second contact 472 is switched on, defrosting conversion contactor coil 480 is not excitatory, defrosting conversion contactor the 3rd contact 483 and defrosting conversion contactor the 4th contact 484 are switched on, and defrosting conversion contactor first contact 481 and defrosting conversion contactor second contact 482 are disconnected, and provide cold energy to carry out heat exchange by ventilation type evaporimeter 3.

As shown in the above description, when the door of freezing/room, Tibetan is opened, the present invention is because of the effect of microswitch, and make ventilation type evaporimeter replace the freezing running of pipe cooled evaporimeter, therefore, enter the hot-air in the body of storehouse and the moisture of its aqueous vapor of carrying under one's arms with thing to be frozen, can be drawn by ventilation type evaporimeter and condense into frost, do not provide cold energy due to pipe cooled evaporimeter and enter hot-air in the body of storehouse and its aqueous vapor of carrying under one's arms carries out heat exchange, so pipe cooled evaporimeter can not frosting; Again, pipe cooled evaporimeter because of can not frosting and have the refrigeration of comprehensive homogenising, and can improve freeze capacity and the efficiency of refrigerator; Moreover, because the frosting of ventilation type evaporimeter can melt into water in time defrosting, and discharged by drainpipe after concentrating on water-collecting tray, therefore, can not cause freezing/to hide indoor ground moist, and chilled food also can not be caused to be mixed the situation injured by a crashing object by the white block dropped, ideal.

Claims

1. a structure for refrigerator, is characterized in that, comprises a refrigerating plant and a defroster, this refrigerating plant includes the compressor that is provided with an output and an input, one condenser being provided with an input and an output and a fan, first path of the one connection output of compressor and the input of condenser, one liquid reservoir having an input and an output, one have one with the input pipe of the 5th communication and the heat exchanger of an efferent duct be communicated with the input of compressor, one alternate path, one the first freezing magnetic valve being fixedly arranged on alternate path, one is fixedly arranged on alternate path and is positioned at first expansion valve in downstream of the first freezing magnetic valve, one and the first pipe cooled evaporimeter of communicating downstream of expansion valve, one with the five-way road of pipe cooled evaporimeter communicating downstream, one to be communicated with alternate path and to be positioned at the third path of upstream of the first freezing magnetic valve, one the second freezing magnetic valve being fixedly arranged on third path, one is fixedly arranged on third path and is positioned at second expansion valve in downstream of the second freezing magnetic valve, one and second the 8th path of communicating downstream of expansion valve, the ventilation type evaporimeter of the communicating downstream of the one and the 8th path, one is communicated with the downstream of ventilation type evaporimeter and the 4th path on five-way road, with a storehouse temperature switch with one first contact and one second contact, wherein, the input of this liquid reservoir is communicated with the output of condenser, and the output of liquid reservoir is communicated with alternate path, this defroster has the microswitch that is provided with one first contact and one second contact, the one Kai Kumen relay being provided with a coil and one first contact and one second contact and one the 3rd contact and one the 4th contact, one high-low pressure switch, one has an overload protective device and a coil and the compressor electromagnetic switch be electrically connected, one time-delay relay with a contact, the one setting timer being provided with one first contact and one second contact, one defrost timer being provided with one first contact and one second contact, the one defrosting conversion contactor having a coil and one first contact and one second contact and one the 3rd contact and one the 4th contact, one the 7th path being installed with a defrosting magnetic valve, the one defrosting involution temperature switch being provided with a fixed contact and one first contact and one second contact, the entrance of storehouse body is located at by this microswitch, and the second contact of the first contact of the first contact of microswitch and Kai Kumen relay coil and Kai Kumen relay and the contact of time-delay relay and Kai Kumen relay is electrically connected, the contact of the second contact of microswitch and time-delay relay and time-delay relay is electrically connected, the contact of time-delay relay and the first contact of Kai Kumen relay are electrically connected, the fan of the second contact of Kai Kumen relay and the second freezing magnetic valve and condenser and the 3rd contact of Kai Kumen relay are electrically connected with the coil of the first contact and defrost timer and defrosting magnetic valve and the conversion contactor that defrosts that set timer, first contact of the 3rd contact of Kai Kumen relay and setting timer and set the second contact of timer and the fan of ventilation type evaporimeter and high-low pressure switch and storehouse temperature switch and be electrically connected, second contact of setting timer the 4th contact that is multiple and Kai Kumen relay is electrically connected, and the 4th contact of Kai Kumen relay is multiple to be electrically connected with the first freezing magnetic valve, the contact of high-low pressure switch and storehouse temperature switch and Kai Kumen relay and the coil of compressor electromagnetic switch and overload protective device are electrically connected, first contact of defrost timer is electrically connected with the 3rd contact of the conversion contactor that defrosts with the first contact of defrosting involution temperature switch and the first contact of the conversion contactor that defrosts, second contact of defrost timer is electrically connected with the 4th contact of defrosting conversion contactor, first contact of defrosting conversion contactor is electrically connected with the 3rd contact of the conversion contactor that defrosts with the fixed contact of defrosting involution temperature switch and the first contact of the involution temperature switch that defrosts, the fan of defrosting the second contact of conversion contactor and the fan of the second freezing magnetic valve and condenser and ventilation type evaporimeter and the 4th contact of the conversion contactor that defrosts are electrically connected, 3rd contact of defrosting conversion contactor is electrically connected with defrosting magnetic valve, the coil of defrosting conversion contactor is electrically connected with the fixed contact of defrosting involution temperature switch and the first contact of the conversion contactor that defrosts, the first end of the 7th path and the first communication between refrigerant condenser and condenser, second end of the 7th path and the 8th communication between the second expansion valve and ventilation type evaporimeter.

2. the structure of refrigerator according to claim 1, it is characterized in that, this compressor solenoid winding and microswitch, Kai Kumen relay coil, high-low pressure switch, time-delay relay, setting timer, defrost timer, defrosting conversion contactor, defrosting between magnetic valve and storehouse temperature switch is provided with a manual selection switch.

3. the structure of refrigerator according to claim 2, is characterized in that, the exterior bowl and that this heat exchanger includes a closed container is fixedly arranged on the inner drum of the closed container of exterior bowl upper surface; Exterior bowl has the input pipe be connected mutually with the output of liquid reservoir and the efferent duct be communicated with expansion valve; Inner drum have one with the input pipe of the 5th communication and an efferent duct be communicated with the input of compressor.

4. the structure of refrigerator according to claim 3, it is characterized in that, this pipe cooled evaporimeter forms by a pipe fitting, several outer wall being shaped in this pipe fitting radial fin and to be fixedly arranged on the top end face in freezer fixed mount for pipe fitting or fin combine and formed.

5. the structure of refrigerator according to claim 3, it is characterized in that, this ventilation type evaporimeter includes a casing being fixedly arranged on the top end face in freezer, multiple fan be fixedly arranged on casing, copper pipe row and be fixedly arranged in casing is fixedly arranged on bottom half and be installed with the water-collecting tray of a drainpipe.

6. the structure of refrigerator according to claim 4, it is characterized in that, this pipe cooled evaporimeter has additional one and is positioned at the first pipe cooled evaporimeter of the communicating downstream of the 3rd expansion valve with the 3rd expansion valve and that the 6th path, be communicated with between the first freezing magnetic valve of alternate path with the first expansion valve is positioned at the downstream of the 6th path; This first pipe cooled evaporimeter forms by a pipe fitting, several outer wall being shaped in this pipe fitting radial fin and to be fixedly arranged on the top end face in freezer fixed mount for the pipe fitting of the first pipe cooled evaporimeter or fin combine and formed; One end of the pipe fitting of this first pipe cooled evaporimeter and the communicating downstream of the 3rd expansion valve, the other end of the pipe fitting of the first pipe cooled evaporimeter and the 5th communication.

7. the structure of refrigerator according to claim 5, it is characterized in that, this pipe cooled evaporimeter has additional one and is positioned at the first pipe cooled evaporimeter of the communicating downstream of the 3rd expansion valve with the 3rd expansion valve and that the 6th path, be communicated with between the first freezing magnetic valve of alternate path with the first expansion valve is positioned at the downstream of the 6th path; This first pipe cooled evaporimeter forms by a pipe fitting, several outer wall being shaped in this pipe fitting radial fin and to be fixedly arranged on the top end face in freezer fixed mount for the pipe fitting of the first pipe cooled evaporimeter or fin combine and formed; One end of the pipe fitting of this first pipe cooled evaporimeter and the communicating downstream of the 3rd expansion valve, the other end of the pipe fitting of the first pipe cooled evaporimeter and the 5th communication.