CN102317713B

CN102317713B - Refrigerator

Info

Publication number: CN102317713B
Application number: CN200980156602.3A
Authority: CN
Inventors: 岩井治彦; 桑理义博
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2009-02-12
Filing date: 2009-03-09
Publication date: 2014-01-15
Anticipated expiration: 2029-03-09
Also published as: WO2010092625A1; CN102317713A; EP2397797A1; EP2397797A4

Abstract

A refrigerator (100) includes: a vertically-long first body (151) which forms a refrigerator compartment; a vertically-long second body (152) which forms a freezer compartment; an outer case (156) which is made of metal and covers the first body (151) and the second body (152) that are arranged side-by-side; a compressor (101) for compressing a refrigerant; a condenser (102) for dissipating heat of the refrigerant; a first evaporator (131) disposed in a rear part of the first body (151); a second evaporator (132) connected in series with the first evaporator (131) and disposed in a rear part of the second body (152); a bypass pipe (105) which directly connects the condenser (102) and the second evaporator (132); and a switch valve (106) which selects between supplying the refrigerant from the condenser (102) to the first evaporator (131) and supplying the refrigerant from the condenser (102) directly to the second evaporator (132).

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator, particularly relate to kind of refrigeration cycle unit and refrigeration modes that refrigerator has.

Background technology

All the time, refrigerator is towards high capacity future development, and correspondingly, the refrigerating capacity of refrigeration system also improves gradually.In order to tackle global warming etc., refrigerator is also wanted taking environmental conservation into consideration, wishes further energy-saving.

The raising of above-mentioned refrigerating capacity and energy-saving are contrary in principle, how in the situation that not sacrificing refrigerating capacity, to realize energy-saving, are problems in refrigerant system design.

For example, the refrigeration system of recording in patent documentation 1 comprises the evaporimeter that evaporimeter that two refrigerating chambers are used and refrigerating chamber are used, and as required, the running of the evaporimeter that refrigerating chamber uses is stopped completely, like this, when keeping refrigerating capacity, reach and realize energy-conservation object.

Patent documentation 1: TOHKEMY 2000-88428 communique

Summary of the invention

The problem that invention will solve

But the double-door refrigerator of the refrigerating chamber extending along the whole above-below direction of refrigerator and the refrigerating chamber left and right spread configuration that extends along whole above-below direction equally with this refrigerating chamber has become a trend of current refrigerator development.

In the refrigerator of this mode, refrigerating chamber and refrigerating chamber are long on above-below direction, therefore, have the tendency of increase in indoor upside and the downside temperature difference, and the temperature inequality that is suppressed at indoor generation is a large problem of double-door refrigerator.On the other hand, the refrigerator of double door also will be considered energy-conservation and environmental protection.

The present invention is exactly in view of above-mentioned problem, and its object is, provides a kind of and can improve indoor Temperature Distribution, and realize energy-conservation double-door refrigerator.

Solve the method for problem

In order to solve above-mentioned problem, refrigerator of the present invention comprises: the first long casing of above-below direction above with peristome and formation refrigerating chamber; The second long casing of above-below direction above with peristome and formation refrigerating chamber; With cover on left and right directions in abutting connection with described first casing of configuration and the metal outer container of described the second casing, this refrigerator is characterised in that, comprising: the compressor of compressed refrigerant; With described compressor array be connected and distribute the condenser of the heat of cold-producing medium; Make the evaporimeter of cold-producing medium evaporation, with described condenser array be connected and be arranged at first evaporimeter at the back of described the first casing; Make the evaporimeter of cold-producing medium evaporation, and with described the first evaporimeter array be connected and be arranged at second evaporimeter at the back of described the second casing; Directly connect the pipe arrangement of described condenser and described the second evaporimeter; With select from described condenser to described the first evaporimeter the supply system cryogen or from described condenser directly to the transfer valve of the second evaporimeter the supply system cryogen.

The evaporimeter that so just can use at the back of refrigerating chamber configuration refrigerating chamber, the evaporimeter of using at the back of refrigerating chamber configuration refrigerating chamber, therefore, can make each evaporimeter running according to ability corresponding to Yu Ge chamber.Therefore, can freeze according to the ability Dui Ge chamber that can eliminate the temperature inequality of above-below direction.

And, in the situation that temperature is freezed and the evaporimeter that turns round compared with low refrigerating chamber, also can stop the evaporimeter that refrigerating chamber is used, energy can avoid waste.

Because evaporimeter configures along left and right directions, therefore, the pipe arrangement playing a role as the bypass pipe of walking around the evaporimeter that refrigerating chamber uses is shortened.Therefore, can reduce the energy loss while using bypass pipe, and can be conducive to energy-conservation.

Described condenser preferably includes: directly and air the first condenser of carrying out heat exchange; And be disposed between described the first casing and described outer container, and by described outer container and air, carry out the second condenser of heat exchange.

Like this, in the situation that dust etc. are attached on the first condenser, cause declining as the ability of condenser, the second condenser can make up its ability.Therefore, can keep for a long time the kind of refrigeration cycle that efficiency is high, and can be conducive to energy-conservation.

The area of the outer container of refrigerating chamber one side of double-door refrigerator is especially large, therefore, can expand configuration the second condenser, dispels the heat on a large scale.Therefore, can reduce as much as possible the impact of the heat of the second condenser on refrigerating chamber.Therefore, can make up fully the ability of the first condenser, keep for a long time high kind of refrigeration cycle.

Described condenser preferably also comprises: the 3rd condenser that is disposed at the peristome of described the second casing.

The heat that can be used to self cooling condenser raises the temperature of the peristome periphery of refrigerating chamber, reduces the temperature difference of it and outside air, prevents dewfall.Like this, can keep the sealing of peristome periphery and door to spill to prevent cold air, be conducive to energy-conservation.In addition, due to without heater etc. is set separately, therefore, can realize the energy-saving of refrigerator.

Refrigerator of the present invention can easily be designed to be applicable to the kind of refrigeration cycle of hydrocarbon system cold-producing medium, even hydrocarbon system cold-producing medium also can be brought into play the ability that is applicable to refrigerating chamber and refrigerating chamber.Therefore, can be easy to tackle the environmental problems such as global warming.

Refrigerator of the present invention preferably also comprises: air the first EGR cooling and that derive to the inside of described the first casing inside from described the first casing being imported by described the first evaporimeter; The second EGR cooling and that derive to the inside of described the second casing with the air inside from described the second casing being imported by described the second evaporimeter.

Like this, in above-below direction long refrigerating chamber and refrigerating chamber, also can utilize air draught to freeze equably.By being applicable to the evaporimeter of refrigerating chamber and the evaporimeter of applicable refrigerating chamber, air is carried out cooling respectively, therefore, can avoid air excessively to be freezed.Therefore, can improve efficiency, be conducive to energy-conservation.

Refrigerator of the present invention preferably also comprises: by described the second evaporimeter by the air importing from described the second casing the second EGR cooling and that derive to the inside of described the second casing; Facing to the inside of described the first casing, go up overleaf the coldplate that described the first evaporimeter is installed with the state of contact above.

Like this, the refrigerating chamber lighter to the temperature inequality of above-below direction directly freezes, so just without for the air being freezed by evaporimeter being sent to the pressure fan of refrigerating chamber.Therefore, can reduce power consumption, be conducive to energy-conservation.

Compare with indirect refrigeration mode, can make the attenuation such as evaporimeter, therefore, can improve the capacity of refrigerating chamber.

Invention effect

According to the present invention, can provide a kind of ability that keeps and improve refrigerator to be conducive to energy-conservation refrigerator simultaneously.

Accompanying drawing explanation

Fig. 1 means the stereogram of the outward appearance of refrigerator.

Fig. 2 means the stereogram of the outward appearance of the refrigerator of opening first and second.

Fig. 3 means the stereogram of the outward appearance of the refrigerator that omits first and second.

Fig. 4 is the schematic diagram of kind of refrigeration cycle unit.

Fig. 5 is the stereogram while schematically showing the formation apparatus installation of kind of refrigeration cycle unit in refrigerator.

Fig. 6 is the profile that schematically shows the refrigerator that adopts indirect refrigeration mode.

Fig. 7 means the stereogram of pressure fan unit.

Fig. 8 means the exploded perspective view of pressure fan unit.

Fig. 9 is the schematic diagram that is arranged at other kind of refrigeration cycle unit in refrigerator.

Figure 10 is the profile that schematically shows the refrigerator that adopts direct refrigeration modes.

Figure 11 is the rear perspective view of coldplate.

Figure 12 is the schematic diagram that is arranged at other kind of refrigeration cycle unit in refrigerator.

Symbol description

100 refrigerators

101 compressors

102 condensers

103 evaporimeters

104 cold-producing mediums return to pipe arrangement

105 bypass pipes

106 transfer valves

107 tube connectors

108 first capillaries

109 second capillaries

110 kind of refrigeration cycle unit

111 first

112 the 3rd

113 through holes

121 second

122 the 4th

123 receiving ports

124 first condensers

125 second condensers

126 the 3rd condensers

131 first evaporimeters

132 second evaporimeters

142 frameworks

144 pressure fans

146 passages

148 air outlets

150 box main bodies

151 first casings

152 second casings

153 partition walls

154 suction inlets

156 outer containers

157 interior casees

158 inboard panels

159 coldplates

161 first EGRs

162 second EGRs

163 shelves

164 drawer chambers

The specific embodiment

Below, with reference to accompanying drawing, the embodiment of refrigerator of the present invention is described.

(embodiment 1)

Fig. 1 means the stereogram of the outward appearance of refrigerator.

Refrigerator 100 is that refrigeration or freezing keeping are stored in the device of inner stock, and it comprises: box main body 150, first 111, second 121, the 3rd 112, through hole 113, the 4th 122.Refrigerator 100 is highly the longest rectangular box in height, width, depth length.

First 111 is that the mode opening and closing is freely stopped up the door towards the opening portion on box main body 150Shi Wei right side.In the present embodiment, the mode of rotating centered by the turning cylinder that first 111 is extended along above-below direction according to the place ahead of the right side wall by box main body 150, is arranged on box main body 150 by hinge (not shown).First 111 is the longer rectangles of above-below direction, is disposed at from the scope of refrigerator 100 top to bottom, and above-mentioned turning cylinder is by the right-hand member edge of first 111.

Second 121 is to open and close the door that mode is freely stopped up when box main body 150 opening portion that is left side.In the present embodiment, the mode of rotating centered by the turning cylinder that second 121 is extended along above-below direction according to the place ahead of the left side wall by box main body 150, is arranged on box main body 150 by hinge (not shown).Second 121 is the longer rectangles of above-below direction, is disposed at from the scope of refrigerator 100 top to bottom, and above-mentioned turning cylinder is by the left end edge of second 121.

Through hole 113 is to connect the first Men111 hole along thickness direction.The effect of through hole 113 is, do not open to take out for first 111 to be stored at the reserve at the first Men111 rear, or puts into reserve and be stored at the first Men111 rear.

The 3rd 112 is to open and close the door that mode is freely stopped up through hole 113.In the present embodiment, the mode of rotating centered by the turning cylinder that the 3rd 112 is extended along left and right directions according to the lower ora terminalis by through hole 113, is arranged on first 111 by hinge (not shown).During from forward observation, the 3rd 112 is roughly square (four jiaos is fillet), and above-mentioned turning cylinder is by the lower end edge portion of the 3rd 112.

The 4th 122 is to open and close mode freely to stop up the door of accepting from the receiving port 123 of the ice of the internal feed of refrigerator 100 etc.

In Fig. 2, also recorded the stock A being stored in refrigerator 100.

As shown in these figures, refrigerator 100 comprises: the first casing 151, the second casing 152, outer container 156.

The first casing 151 is the long casings with heat-proof quality of above-below direction that have peristome above and form refrigerating chamber.In the present embodiment, the first casing 151 is disposed at refrigerator 100 right side along the whole above-below direction of refrigerator 100.In addition, refrigerating chamber is the temperature inside the box to be remained on to the place of 0 ℃ of above temperature band, particularly at high humidity, preserve in the situations such as vegetables, it is in inside, to be provided with according to form drawer box in refrigerating chamber so that can directly not contact the modes of vegetables and the place of subregion at the cold air of refrigeration indoor circulation, and carries out the place of keeping.

The second casing 152 is the long casings with heat-proof quality of above-below direction that have peristome above and form refrigerating chamber.In the present embodiment, the second casing 152 is disposed at the left side of refrigerator along the whole above-below direction of refrigerator 100.Refrigerating chamber is the low room temperature that keeps subzero 18 ℃ of front and back, the place of the stocks such as keeping frozen food.

Outer container 156 is to cover on left and right directions in abutting connection with the first casing 151 of configuration and the metallic plate of the second casing 152.

Herein, the box main body in present embodiment 150 is manufactured in such a way.That is in the refrigerating chamber of, being separated by partition wall 153 and refrigerating chamber utilization, case 157 is according to adopting independently respectively the method for resin integrated moulding to manufacture.In the outside of interior case 157, across the interval of regulation, to cover the mode of interior case 157, dispose outer container with interior case 157.The inside of described partition wall 153 is also provided with the gap being communicated with gap between outer container 156 and interior case 157.In being arranged at gap between outer container 156 and interior case 157 and partition wall 153 gap, such as filling hard polyurethane foams etc., form heat-barrier material.According to above method, manufacture box main body 150.

Therefore, in the present embodiment, the tank wall of the first casing 151 and the second casing 152 adjacency forms an inseparable integral body, and the first casing 151 and the second casing 152 share partition wall 153 as wall portion.

Below, the kind of refrigeration cycle unit being arranged in refrigerator 100 is described.

Fig. 4 means the schematic diagram of kind of refrigeration cycle unit.

Fig. 5 be modal representation by the formation apparatus installation of kind of refrigeration cycle unit the stereogram in refrigerator time.

Kind of refrigeration cycle unit 110 is by condenser 102 distribute heats, by evaporimeter 103, absorb heat, thus, have and make the heat function that move to another space in Cong Yige space forcibly, evaporimeter 103 is disposed at the position of being freezed in the inside of refrigerator 100, condenser 102 is disposed in the outside Machine Room of refrigerator 100, so just can freeze to the inside of refrigerator 100.As shown in these figures, the kind of refrigeration cycle unit that refrigerator 100 adopts is the device that comprises compressor 101 (Compressor), condenser 102 (Condenser) and evaporimeter 103 (Evaporator), the cold-producing medium that is used as refrigerant path returns to pipe arrangement 104 and connects circlewise above-mentioned instrument, cold-producing medium is circulated therein, thereby realize kind of refrigeration cycle.In the present embodiment, refrigerator 100 also comprises: as bypass pipe 105 and the transfer valve 106 of pipe arrangement.

Evaporimeter 103 in disposing compressor 101 and condenser 102 Machine Room and being disposed at case by heat insulating member separate up and down configuration ，Xiang Neihe Machine Room textural by the defrost water of evaporimeter 103 is connected to the drainpipe importing in Machine Room.

Compressor 101 is compressive flow gaseous refrigerants in cold-producing medium returns to pipe arrangement 104, improves the device of the pressure of cold-producing medium.

Condenser 102 be by the dissipation of heat of the gaseous refrigerant of increased pressure in atmosphere and cooling refrigeration agent, and cold-producing medium is become to the device of the liquid refrigerant that pressure is high.In the present embodiment, condenser 102 consists of the first condenser 124, the second condenser 125 and the 3rd condenser 126.

The first condenser 124 is main condensers direct and that air carries out heat exchange, is being exposed to the dorsal part bottom that is disposed at refrigerator 100 under airborne state.In embodiment, main condenser is, in pipe arrangement, the radiating fin of the thin plate forming with the good material of the heat conductivities such as aluminium is rolled into spiral helicine helical fin coil specification, becomes serpentine bend repeatedly to form pipe arrangement.

The second condenser 125 is between the sidewall and outer container 156 in the outside of the first casing 151, is close to the outer container 156 back side and is configured to snakelike state, and the auxiliary condenser that carries out heat exchange by metal outer container 156 and air.Between the second condenser 125 and the inside of the first casing 151, have heat-barrier material, therefore, the heat producing from the second condenser 125 is difficult to have influence on the inside of the first casing 151.The inside of the first casing 151 is refrigerating chambers that temperature is higher, and therefore, the thermal gradient of the second condenser 125 and the first casing 151 inside is low, is difficult to transferring heat.

The 3rd condenser 126 is the auxiliary condensers that are disposed at the peristome periphery of the second casing 152, and has the temperature of peristome periphery being carried out cooling refrigeration agent and improved the second casing 152 by heat radiation with the function of Antidewing.

If adopt aforesaid way to form condenser 102, so, even in the situation that the ability that causes being exposed to the first condenser 124 in atmosphere because of the accumulation of dust etc. declines, the second condenser 125 also can make up the ability as condenser 102, therefore, without the ability in order to ensure kind of refrigeration cycle unit 110, keep in repair, can keep for a long time.

Owing to can preventing the dewfall of the peristome of refrigerating chamber, thus can prevent that the seal of second 121 causing because of frosting from declining, and can improve or keep the energy efficiency of refrigerator 100.

Evaporimeter 103 is in inside, cold-producing medium evaporated and absorb the device that is present in the heat that ambient air etc. has.In the present embodiment, evaporimeter 103 by by tube connector 107 arrays the first evaporimeter 131 and the second evaporimeter 132 that connect form.Tube connector 107 connects the first casing 151 back side and the second casing 152 back side and passes through in heat insulating member, and evaporimeter is connected with tube connector 107Liang Ge end.

The first evaporimeter 131 be arranged at the 3rd condenser 126 arrays the evaporimeter at the first casing 151 back of being connected, there is the effect of the inside of cooling the first casing 151.In the refrigerating chamber height double-door type refrigerator identical with refrigerating chamber height, for refrigerating chamber being cooled to all sidedly to approximately subzero 18 ℃, in short transverse in refrigerating chamber, configure the second evaporimeter 132, on the other hand, the first evaporimeter 131 that refrigerating chamber is cooled to about 0～6 ℃ left and right higher than freezer temperature is compared with the second evaporimeter 132, configuration height in short transverse in refrigerating chamber is not high, in order to ensure larger volume in the case in the depth direction of refrigerating chamber, it is less than the second evaporimeter 132.

The second evaporimeter 132 be with the first evaporimeter 131 arrays be connected, and be arranged at the evaporimeter at the second casing 152 back, there is the effect of the inside of cooling the second casing 152.The second evaporimeter 132 is used for cooling refrigerating chamber, therefore, large than the first evaporimeter 131.

Evaporimeter uses fin tube type heat exchanger, but the present invention is not limited thereto, and the heat exchanger etc. that also can adopt corrugated fin and flat tube is heat exchanger arbitrarily.

At the first evaporimeter 131 and the second evaporimeter 132, be all configured to, pipe arrangement all wriggles and repeatedly carries out bending, the entrance and exit flowing at the top of evaporimeter configuration cold-producing medium.

As mentioned above, split is equipped with for the first evaporimeter 131 of cooling the first casing 151 (refrigerating chamber) with for the second evaporimeter 132 of cooling the second casing 152 (refrigerating chamber), so just can be applicable to the refrigeration of design temperature band separately.

Particularly in the situation that the refrigerating chamber of the lengthwise of outfit present embodiment, in order to reduce the temperature difference of the above-below direction of refrigerating chamber, must be equipped with the evaporimeter that possesses sufficient refrigerating capacity.But if this evaporimeter is positioned at the back of refrigerating chamber, so, refrigerating chamber is just likely excessively freezed, and must carry out heat insulation fully to refrigerating chamber and evaporimeter.In the case, the capacity of refrigerating chamber is subject to the extruding of heat-barrier material.Therefore, as described herein, the first evaporimeter 131 that is applicable to refrigerating chamber refrigeration is set at the back of the first casing 151 (refrigerating chamber), at the back of the second casing 152 (refrigerating chamber), arrange and be applicable to the second evaporimeter 132 of cooling refrigerating chamber equably, so just can improve the capacity of refrigerating chamber.

In the first casing 151 (refrigerating chamber), it on top, is the refrigerating chamber of a plurality of shelves 163 of configuration, below shelf 163, along above-below direction, configure a plurality of drawers chamber 164, particularly using at least one in a plurality of drawers chamber as can be in the situation that the scope of about 0～6 ℃ of left and right changes the temperature-changing chamber of temperature, if configure the first evaporimeter 131 at the rear of this temperature-changing chamber, so just can shorten the cold air path of the ejection cold air from the first evaporimeter 131 to temperature-changing chamber, so, can guarantee the depth space of the first casing 151, and can guarantee the dischargeable capacity of large drawer chamber.Can reduce the refrigeration losses in cold air path, improve the refrigerating efficiency of temperature-changing chamber.

Transfer valve 106 is to select from the 3rd condenser 126 to the first evaporimeter 131 the supply system cryogens, or from the direct triple valve to the second evaporimeter 132 the supply system cryogens of the 3rd condenser 126, is disposed in the space identical with condenser 102 with compressor 101.

In transfer valve 106 downstream one side, according to the mode that can switch, connect the first capillary 108 being connected with the first evaporimeter 131 and the second capillary 109 being connected with the second evaporimeter 132.

Bypass pipe 105 is to connect between transfer valve 106 and the second capillary 109, by transfer valve 106, directly connects the pipe of the 3rd condenser 126 and the second evaporimeter 132.Herein, directly connect and refer to, not cold-producing medium is imported to the second evaporimeter 132 via the first evaporimeter 131, but walk around the first evaporimeter 131 from transfer valve 106, directly cold-producing medium is imported to the second evaporimeter 132.

Between transfer valve 106 and the second capillary 109, be provided with the bypass pipe 105 for tube connector, still, also can on transfer valve 106, directly connect the second capillary 109.

The not special restriction of the cold-producing medium adopting in the kind of refrigeration cycle unit 110 of refrigerator 100, for example, can exemplify hydrocarbon class cold-producing medium.

Herein, hydrocarbon class cold-producing medium is for example propyl alcohol and iso-butane.They are compared with hydrogen fluorohydrocarbon with HCFC, minimum on the impact of global warming, therefore preferably.

As previously discussed, the first evaporimeter 131 downstream array of refrigerated compartment connect the second evaporimeter 132 of cooling refrigerating chamber, and, utilize transfer valve 106 to switch refrigerant flow path, form and to make only the flow through kind of refrigeration cycle of the second evaporimeter 132 of downstream one side of cold-producing medium, can control following kind of refrigeration cycle thus, , in the situation that refrigerating chamber and refrigerating chamber are not cooled to design temperature, the mode of two evaporimeters so that cold-producing medium is flowed through, switch transfer valve 106, control kind of refrigeration cycle, in the situation that refrigerating chamber reaches design temperature, by switching transfer valve 106, make do not flow through the first evaporimeter 131 of refrigerated compartment of cold-producing medium, make cold-producing medium only the second evaporimeter 132 of cooling refrigerating chamber of only flowing through.

If refrigerating chamber also reaches design temperature, so, stop the running of compressor 101.So just can keep on one side importing cold-producing medium to the second evaporimeter 132, select to first evaporimeter 131 to import cold-producing medium on one side.Like this, even for not in the situation that on above-below direction in long the second casing 152 (refrigerating chamber) occurrence temperature uneven and the second evaporimeter 132 is turned round continuously for a long time, also can be applicable to the first evaporimeter 131 control of the first casing 151 (refrigerating chamber).

Owing to configuring the first evaporimeter 131 and the second evaporimeter 132 along left and right directions, therefore, can shorten the length of the tube connector 107 that connects the first evaporimeter 131 and the second evaporimeter 132, so, in the situation that utilizing transfer valve 106 to the first evaporimeter 131 and the second evaporimeter 132 importing cold-producing medium, not only can reduce the refrigeration losses in tube connector 107, can also improve the refrigerating efficiency of the second evaporimeter 132, and can reduce the refrigerant amount of combustible refrigerant, improve explosion-proof.

The first evaporimeter 131 is configured in to the below of refrigerating chamber, like this, the Distance Shortened of the Machine Room of the first evaporimeter 131 and configuration compressor, near just in case in the situation that combustible refrigerant leakage the first evaporimeter 131, because the proportion of combustible refrigerant is larger than air, so accumulate downwards, and, and by can easily importing configuration compressor 101 Machine Room for discharging the drainpipe of the defrost water of the first evaporimeter 131, and can to case, open from Machine Room, therefore, the combustible refrigerant that can reduce leakage is trapped in case and improves concentration, can improve explosion-proof.

In the situation that combustible refrigerant leaks from the second evaporimeter 132, also with above-mentioned same, by drainpipe, can in Machine Room, discharge the cold-producing medium leaking, and cold-producing medium that can Leakage prevention is trapped in case, can improve explosion-proof.

As mentioned above, the first evaporimeter 131 and the second evaporimeter 132 are configured in respectively to the below of refrigerating chamber and refrigerating chamber, according to the height mode unanimous on the whole of two evaporimeter 103 bottoms is configured, raising is by Machine Room discharge to case in case, but, also can be according to the first evaporimeter 131 position shorter than the second evaporimeter 132 be improved upward, the height mode unanimous on the whole of two evaporimeter 103 upper ends configures.

Like this, the tube connector 107 that connects the refrigerant outlet portion of the first evaporimeter 131 and the refrigerant inlet portion of the second evaporimeter 132 just can connect to approximate horizontal between the first evaporimeter 131 and the second evaporimeter 132, and can make the pipe arrangement distance of tube connector 107 the shortest, by switch transfer valve 106 and make cold-producing medium flow through the first evaporimeter 131 and the second evaporimeter 132 in the situation that, can further reduce the refrigeration losses in tube connector 107, further reduce the refrigerant amount of combustible refrigerant.

The refrigerator 100 that adopts said structure, not only can improve whole energy efficiency, and can be conducive to energy-conservation.

Fig. 6 is the profile that modal representation adopts the refrigerator of indirect refrigeration mode.

As shown in the drawing, for the second casing 152 (refrigerating chamber), adopt the refrigerator 100 of indirect refrigeration mode to there is the second EGR 162 being formed by pressure fan 144, passage 146, air outlet 148, suction inlet 154.It is cooling that the second EGR 162 is that the air that imported by the 132 pairs of inside from the second casing 152 of the second evaporimeter carries out, and the device of deriving to the second casing 152, is disposed at the back, inside of the second casing 152.The second EGR 162, with by the cooling air of the second evaporimeter 132 direct mode of the inside of cooling the second casing 152 not, carries out heat insulation by being arranged at the heat-barrier material at inboard panel 158 back to the place ahead, inside of passage 146 and the second evaporimeter 132 and the second casing 152.

Fig. 7 means the stereogram of pressure fan unit.

Fig. 8 means the exploded perspective view of pressure fan unit.

As shown in these figures, pressure fan 144 is the devices that can form air draught, adopts in the present embodiment aerofoil fan.Pressure fan 144 is installed on the framework 142 top of taking in the second evaporimeter 132 in inside obliquely.Pressure fan 144 and framework 142 form pressure fan unit, under the state of pressure fan unit, can easily be disposed in passage 146.

Passage 146 is paths of Route guiding air according to the rules, and the tubular part consisting of heat-barrier material forms.

Air outlet 148, suction inlet 154 are to be arranged on inboard panel 158 and the opening being communicated with passage 146, the cooled air of the passage 146 inside ejection from a plurality of air outlets 148 of any opening to the second casing 152 of flowing through, the air of the second casing 152 inside is inhaled in passage 146 from suction inlet 154.

As mentioned above, at the second casing 152 back, configure the second EGR 162, the inside that adopts cooling the second casing 152 of indirect refrigeration mode, so just can produce air draught forcibly in the inside of the second casing 152, and can reduce the air themperature inequality of the second casing 152 inside.Particularly for particularly effective as the second lower casing 152 of above-below direction long the second casing 152, internal temperature.

Because of the second evaporimeter 132 with by the firm cooled air of the second evaporimeter 132, the temperature of inboard panel 158 is difficult to decline, and therefore, can prevent from as much as possible occurring dewfall before inboard panel 158.

By the thermograde of the temperature of the cooling air of the first evaporimeter 131 and the temperature of the first casing 151 inside and more slow by the thermograde of the temperature of the cooling air of the second evaporimeter 132 and the temperature of the second casing 152 inside, therefore, heat-barrier material between the first evaporimeter 131 and the first casing 151 inside and the attenuation of thickness separately of the heat-barrier material between the second evaporimeter 132 and the second casing 152 inside can be made, and the capacity of refrigerator 100 can be conducive to improve.

In the present embodiment, at the first casing 151 back, be provided with the first EGR 161.For structure and the action effect of the first EGR 161, owing to being the indirect refrigeration mode identical with above-mentioned the second EGR 162, therefore, omit the detailed description of the first EGR 161.

Below, with reference to accompanying drawing, other embodiments of refrigerator of the present invention are described.

(embodiment 2)

Fig. 9 is the schematic diagram that modal representation is arranged at other kind of refrigeration cycle unit in refrigerator.

The kind of refrigeration cycle unit 110 of present embodiment comprises: the first evaporimeter 131 and the second evaporimeter 132 that are connected side by side with condenser 102.Particularly, first condenser 124 of flowing through as main condenser from the cold-producing medium of compressor 101 ejections, be condensed, flow through as the second condenser 125 of auxiliary condenser, promote the condensation of cold-producing medium, and then, flow through as the 3rd condenser 126 of auxiliary condenser, utilize thermolysis, prevent the peristome dewfall of the refrigerating chamber large with the outside air temperature temperature difference.The first evaporimeter 131 is connected by transfer valve 106 side by side with the second evaporimeter 132.

As pressure reducer, the first capillary 108 is connected between transfer valve 106 and the first evaporimeter 131, and the second capillary 109 is connected between transfer valve 106 and the second evaporimeter 132.Circulation in compressor 101 after outlet pipe arrangement by the first evaporimeter 131 and the second evaporimeter 132 and cold-producing medium return to pipe arrangement 104 and converge.

By switching transfer valve 106, only can switch and import cold-producing medium and only to the second evaporimeter 132, import cold-producing medium to the first evaporimeter 131.

According to the load condition of refrigerating chamber and refrigerating chamber, with transfer valve 106, switch refrigerant flow path, so, can not make cold-producing medium circulation in the first evaporimeter 131 and the second evaporimeter 132 simultaneously, all the time make cold-producing medium only in an evaporimeter, circulate therein, so, refrigerant amount can be reduced.

Therefore, in the situation that using combustible refrigerant, compare with embodiment 1, can reduce refrigerant amount, reduce explosion-proof, and by saving cold-producing medium, also can reduce the load of compressor 101, so, can promote energy-conservation.

Other are identical with the kind of refrigeration cycle unit 110 in embodiment 1, and therefore, the description thereof will be omitted.

Figure 10 is the profile that modal representation adopts the refrigerator of direct refrigeration modes.

In the present embodiment, in refrigerator 100, for the second casing 152 (refrigerating chamber), adopt indirect refrigeration mode, for the first casing 151 (refrigerating chamber), adopt direct refrigeration modes.Indirect refrigeration mode is identical with aforementioned embodiments 1, and therefore the description thereof will be omitted.

As shown in the drawing, adopt the refrigerator 100 of direct refrigeration modes to be equipped with coldplate 159 at the back, inner side of the first casing 151.Before coldplate 159, facing to the inside of the first casing 151, at the coldplate 159 back side, with contact condition, the first evaporimeter 131 is installed.

Figure 11 represents the rear perspective view of coldplate.

As shown in the drawing, coldplate 159 is provided with the first evaporimeter 131 of tubulose with snakelike state, and with coldplate 159 contact conditions under install, thereby by coldplate 159, can carry out heat exchange.

As mentioned above, the first evaporimeter 131 is connected side by side with the second evaporimeter 132, as long as can select any one operating condition, so just can utilize the cold-producing medium only being evaporated by the second evaporimeter 132 to absorb heat, therefore, can improve the cooling capacity of the second evaporimeter 132.Therefore, for the inside of the second long casing of above-below direction, also can guarantee enough cooling capacities, and it is unequal to eliminate the temperature of above-below direction of the second casing 152.

If the inside for the first casing 151 adopts direct refrigeration modes, so, just can delete the required air flow circuit of indirect refrigeration mode, can make to be disposed at the instrument class attenuation at the back, inside of the first casing 151, can guarantee spacious storage space in the inside of the first casing 151.

(embodiment 3)

Figure 12 means the schematic diagram that is arranged at other kind of refrigeration cycle unit in refrigerator.

In the present embodiment, refrigerator 100 comprises two kind of refrigeration cycle unit 110.One of them kind of refrigeration cycle unit 110 is the devices that comprise compressor 101, condenser 102 (the second condenser 125, the 3rd condenser 126), the first evaporimeter 131, and another kind of refrigeration cycle unit 110 is the devices that comprise compressor 101, condenser 102 (the first condenser 124), the second evaporimeter 132.That is, refrigerator 100 comprises two compressors, so just can supply with by the cold-producing medium of difference independent compression to the first evaporimeter 131 and the second evaporimeter 132.

As previously discussed, comprise a plurality of compressors 101, as long as for a plurality of evaporimeters 103 compressor 101 that can turn round independently, so, for example, for a plurality of casings (the first casing 151 and the second casing 152) kind of refrigeration cycle unit 110 that just can turn round under optimum condition.Particularly, for the first casing 151, adopt direct refrigeration modes, for the second casing 152, adopt in the situations such as indirect refrigeration mode, when adopting different refrigeration modes, as long as turn round independently kind of refrigeration cycle unit 110, so, just can turn round under optimum condition for refrigeration modes.The design freedom in kind of refrigeration cycle unit 110 own improves, and also can design the kind of refrigeration cycle unit 110 that efficiency is high.That is, can be conducive to energy-conservation.

As mentioned above, kind of refrigeration cycle unit one side at the first evaporimeter 131 that refrigerating chamber is freezed connects the second condenser 125 and the 3rd condenser 126, but, in the situation that consider that the design temperature for refrigerating chamber and refrigerating chamber is best kind of refrigeration cycle design, kind of refrigeration cycle unit one side at the second evaporimeter 132 that the temperature refrigerating chamber lower than refrigerating chamber freezed connects the second condenser 125 and the 3rd condenser 126, so just can improve refrigerating efficiency.

Kind of refrigeration cycle unit 110 is independent in refrigerating chamber and refrigerating chamber, so, kind of refrigeration cycle unit one side at the first evaporimeter 131 that refrigerating chamber is freezed connects the second condenser 125, in the kind of refrigeration cycle unit of the second evaporimeter 132 that refrigerating chamber is freezed, a side connects the 3rd condenser 126, connecting pipings does not intersect with refrigerating chamber and the refrigerating chamber of left and right configuration like this, can carry out in left and right pipe arrangement processing, and can shorten piping length, reduce the cost of raw material, can improve assembly operation.

In above-mentioned embodiment 1～3, for the kind of refrigeration cycle unit 110 that comprises the first evaporimeter 131, the second evaporimeter 132, the first condenser 124, the second condenser 125, the 3rd condenser 126, indirect refrigeration mode, direct refrigeration modes, bypass pipe 105; The kind of refrigeration cycle unit 110 of the first evaporimeter 131 and the second evaporimeter 132 selectively can turn round; Be equipped with the kind of refrigeration cycle unit 110 of a plurality of compressors 101; And the combination according to the rules such as cold-producing medium is illustrated, but these combinations are not limited to above-mentioned embodiment, can freely select.

Industrial utilizability

The present invention can be used in refrigerator home-use and office use, particularly can be used in refrigerating chamber and the refrigerating chamber refrigerator in abutting connection with configuration on left and right directions.

Claims

1. a refrigerator, comprising: the first long casing of above-below direction above with peristome and formation refrigerating chamber; The second long casing of above-below direction above with peristome and formation refrigerating chamber; Covering is along left and right directions in abutting connection with described first casing of configuration and the metal outer container of described the second casing, and this refrigerator is characterised in that, comprising:

The compressor of compressed refrigerant;

With described compressor array be connected, emit the condenser of the heat of cold-producing medium;

As the evaporimeter that makes cold-producing medium evaporation, with described condenser array be connected, and be arranged at first evaporimeter at the back of described the first casing;

As the evaporimeter that makes cold-producing medium evaporation, with described the first evaporator arrangement at left and right directions, with described the first evaporimeter array be connected, and be arranged at second evaporimeter at the back of described the second casing;

By described condenser and the direct-connected pipe arrangement of described the second evaporimeter; With

To from described condenser so that cold-producing medium flow through and be configured in described first evaporimeter of left and right directions and the second evaporimeter both sides' mode and be configured in to described the first evaporimeter the supply system cryogen or from described condenser so that cold-producing medium is not flowed through the transfer valve that described first evaporimeter of left and right directions and the mode of described the first evaporimeter described the second evaporimeter are directly selected to the second evaporimeter the supply system cryogen

In the situation that described refrigerating chamber and described refrigerating chamber are not cooled to design temperature, switch that described control valve is controlled kind of refrigeration cycle and be configured in described the first evaporimeter and the second evaporimeter both sides of left and right directions so that cold-producing medium is flowed through, in the situation that described refrigerating chamber reaches design temperature, switch that described control valve is controlled kind of refrigeration cycle and be not configured in described first evaporimeter of left and right directions and described the first evaporimeter in described the second evaporimeter and make cold-producing medium described the second evaporimeter of only flowing through so that cold-producing medium is not flowed through, in the situation that described refrigerating chamber and described refrigerating chamber reach design temperature, stop the running of described compressor, can select to import cold-producing medium to described the first evaporimeter while keeping importing cold-producing medium to described the second evaporimeter.

2. refrigerator as claimed in claim 1, is characterized in that:

Described condenser comprises:

The first direct and air carries out heat exchange condenser; With

Be disposed between described the first casing and described outer container the second condenser that carries out heat exchange by described outer container and air.

3. refrigerator as claimed in claim 2, is characterized in that:

Described the second condenser becomes the shape that crawls to be disposed at the side of described the first casing.

4. refrigerator as claimed in claim 2, is characterized in that:

Described condenser also has the 3rd condenser of the peristome that is disposed at described the second casing.

5. refrigerator as claimed in claim 1, is characterized in that:

Described cold-producing medium is hydrocarbon system cold-producing medium.

6. refrigerator as claimed in claim 1, is characterized in that:

Also comprise:

Air the first EGR cooling and that derive to the inside of described the first casing inside from described the first casing being imported by described the first evaporimeter; With

Air the second EGR cooling and that derive to the inside of described the second casing inside from described the second casing being imported by described the second evaporimeter.

7. refrigerator as claimed in claim 1, is characterized in that:

Also comprise:

By described the second evaporimeter by the air importing from described the second casing the second EGR cooling and that derive to the inside of described the second casing; With

Coldplate, described coldplate above facing to the inside of described the first casing, the back side of described coldplate is provided with described the first evaporimeter with the state of contact.