CN102317716A

CN102317716A - Refrigerator

Info

Publication number: CN102317716A
Application number: CN2009801567172A
Authority: CN
Inventors: 西村晃一; 角尾龙彦
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2009-02-12
Filing date: 2009-03-10
Publication date: 2012-01-11
Anticipated expiration: 2029-03-10
Also published as: WO2010092628A1; EP2397799B1; EP2397799A1; EP2397799A4; CN102317716B; JP5450462B2; JPWO2010092628A1

Abstract

In the refrigerator (100) in which the refrigerating chamber and the freezing chamber are arranged side by side along the left and right directions, the energy efficiency of the refrigeration cycle is improved. It includes: a first box body (151) having an opening on the front surface and forming a refrigerator compartment; a second box body (152) having an opening on the front surface and forming a freezing compartment; The metal outer box (156) of the first casing (151) and the second casing (152), it also includes: the compressor (101) that is arranged in the second casing (152); 101) connected, and arranged under the first box (151), the first condenser (124) that directly exchanges heat with the air; connected with the first condenser (124), and arranged in the first box ( 151) and the outer case (156), the second condenser (125) that carries out heat exchange with the air through the outer case (156); and is connected with the second condenser (125) to make the evaporator ( 103).

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator, particularly a kind of correlation technique of kind of refrigeration cycle unit of the refrigerator that refrigerating chamber and refrigerating chamber are set up in parallel at left and right directions.

Background technology

In the prior art, refrigerating chamber and refrigerating chamber are with at the state of longitudinal overlap and the refrigerator (for example, with reference to patent documentation 1) in the majority that is equipped with.In such refrigerator, the compressor and the condenser that constitute the kind of refrigeration cycle unit are set up in parallel at left and right directions at the rear, bottom of refrigerator.Position relation for the left and right directions of this compressor and condenser; Because refrigerating chamber and refrigerating chamber are in the refrigerator that above-below direction disposes side by side; Therefore condenser and compressor and refrigerating chamber or impartial with the position relation of refrigerating chamber, are confirmed according to the conditions such as simplicity of pipe arrangement.

Nowadays, the refrigerator that a kind of refrigerating chamber and refrigerating chamber are set up in parallel at left and right directions has appearred.Its compressor of such refrigerator and condenser also are disposed at the rear, bottom of refrigerator, and still, the position of the compressor of this refrigerator and the left and right directions of condenser relation is very important.That is, compare with the temperature of condenser, the temperature of compressor is higher; Therefore; With condenser arrangement below refrigerating chamber, with compressor configuration below refrigerating chamber, like this; Reduce the thermograde of the thickness direction of the heat-barrier material that is disposed at the refrigerating chamber below, and reduce the thermograde of the thickness direction of the heat-barrier material that is disposed at the refrigerating chamber below.

Its compressor of the refrigerator of any one type and condenser all are high temperature, and therefore, compressor and condenser are exposed in the atmosphere and are cooled off by air.

Patent documentation 1: TOHKEMY 2003-42636 communique

Summary of the invention

Invent problem to be solved

But as existing refrigerator, under the situation with air cooling compressor and condenser, because of use refrigerator throughout the year, dust is attached to its surface.Particularly accumulate under the situation of condenser at dust, condenser is incubated by dust, the ground cooling refrigeration agent that is difficult to achieve one's goal, and the ability of kind of refrigeration cycle has the tendency of decline.In addition, refrigerating chamber and refrigerating chamber are more large-scale refrigerators along the refrigerator that left and right directions disposes side by side, therefore; Can not move at an easy rate; Also be difficult to remove attached to the condenser of the bottom dorsal part that is disposed at refrigerator and the dust of compressor, therefore, also be difficult to recover the decline of kind of refrigeration cycle ability.

Therefore, inventor of the present invention finds, utilizes the metal outer container as heat sink, can remedy the decline of kind of refrigeration cycle ability, about this point, is handling application formality in addition.

Kind of refrigeration cycle unit when the inventor has also found to be fit to utilize outer container as heat sink.

The present invention just is based on above-mentioned discovery, and its purpose is, a kind of refrigerator is provided, and in the refrigerator that left and right directions is set up in parallel, the decline that can suppress the kind of refrigeration cycle ability improves the efficiency of kind of refrigeration cycle simultaneously, and can help energy-conservation at refrigerating chamber and refrigerating chamber.

Solve the means of problem

In order to achieve the above object, refrigerator of the present invention has: have peristome and form first casing of refrigerating chamber at front surface; Second casing that has peristome and formation refrigerating chamber at front surface; With the metal outer container that will cover at said first casing and said second casing of left and right directions disposed adjacent, comprising: the compressor that is disposed at the below of said second casing; Be connected with said compressor, and be disposed at first condenser that the below is come directly and air carries out heat exchange of said first casing; Be connected with said first condenser, and be disposed between said first casing and the said outer container, carry out second condenser of heat exchange through said outer container and air; Be connected with said second condenser, make the evaporimeter of cold-producing medium evaporation.

So just can be near first condenser configuration second condenser, and can shorten the pipe that links first condenser and second condenser.Therefore, can avoid the unnecessary cold-producing medium that circulates, improve the efficiency of kind of refrigeration cycle.

It preferably also comprises: be disposed between said compressor and said first condenser, and produce the hair-dryer (air blast) of the air stream that makes said compressor and the cooling of said first condenser.

The air in the space that disposes first condenser and compressor is flowed, improve refrigeration.Therefore,, also can reduce of the influence of the heat of compressor below refrigerating chamber, improve the efficiency of whole refrigerator refrigerating chamber even compressor is arranged.

Said evaporimeter comprises: be connected with said second condenser, and be disposed at first evaporimeter at the back of said first casing; Be connected with said first evaporator series, and be disposed at second evaporimeter at the back of said second casing, this refrigerator also preferably includes: not by said first evaporimeter, connect the bypass pipe of said second condenser and said second evaporimeter; With select from said second condenser to the said first evaporimeter the supply system cryogen still from said second condenser directly to the transfer valve of the second evaporimeter the supply system cryogen.

Like this, just can the state that makes second evaporimeter running down switching first evaporimeter running and stop.Therefore, needn't because of cooling require lower temperature cooling chamber and long-time running second evaporimeter influence and make the running of first evaporimeter, can use cold-producing medium effectively, obtain high energy efficiency.

Said transfer valve preferably is arranged at a side that disposes first condenser towards said hair-dryer.

Like this, because transfer valve is present in the zone of the first lower condenser of temperature, therefore, be difficult to influence the ability of kind of refrigeration cycle.Because transfer valve need keep in repair etc., therefore, it is exposed in the atmosphere, transfer valve preferably is disposed in the zone that has first condenser.

It preferably also comprises: have the water refrigerating plant that is connected and selects to supply with to this refrigerator running water and the valve that breaks off running water with running water pipe, said valve is arranged at a side that disposes first condenser with respect to said hair-dryer.

Like this, the valve that control is introduced running water refrigerator inside and cooled off the current of the water refrigerating plant of supplying with behind this running water is present in the zone of the first lower condenser of temperature, therefore, can suppress the decline of the refrigerating capacity of water.In addition, because valve need keep in repair etc., therefore, it is exposed in the atmosphere, valve preferably is disposed in the zone that has first condenser.

The air stream that said hair-dryer produces towards direction preferably from said second condenser towards said compressor.

Like this, can produce into air stream from low temperature one side direction high temperature one side, and can improve the refrigerating efficiency of first condenser and compressor.In addition, the heat that can also suppress compressor passes to transfer valve and valve, avoids the decline of refrigerating capacity of ability and the water of kind of refrigeration cycle.

It preferably also comprises: the evaporating pan that will be stored and made its evaporation by the defrost water that kind of refrigeration cycle produced; Wherein, This evaporating pan is disposed between said second casing and the said compressor, has the region-wide recess that is in contact with it from upper surface to the side of said compressor.

So just can be between the higher compressor of temperature and second casing configuration evaporating pan parts, and can reduce heat because of compressor to the influence in second casing.And evaporating pan is the dish that makes in the defrost water that the surface the produced gasification of evaporimeter, utilizes heat of gasification to seize the heat of compressor, can reduce the influence in second casing.

It preferably also comprises: be disposed between said compressor and said first condenser; Generation makes the hair-dryer of the air stream of said compressor and the cooling of said first condenser, and said evaporating pan comprises the rake with the said compressor guiding of the air flow of the top of the said compressor of flowing through.

Like this, utilize hair-dryer can improve the refrigerating efficiency of compressor, and can reduce, and can improve the efficiency of kind of refrigeration cycle the influence in second casing.

Said evaporimeter preferably includes: be connected with said second condenser, and be disposed at first evaporimeter at the back of said first casing; Be connected with said first evaporimeter, and be disposed at second evaporimeter at the back of said second casing, this refrigerator also comprises: the guiding water channel that will guide to said evaporating pan from the defrost water that said first evaporimeter produces.

Gasification so just can more water be concentrated in the evaporating pan, and the amount of vaporization of water increases, because of can increase the heat that seizes from compressor.

The height of said compressor is preferably short than the height of said first condenser.

Like this, the distance of the compressor and second casing enlarges, and can reduce the heat that passes to the compressor in second casing.In addition, the space between this compressor and second casing configuration evaporating pan easily, the also configuration of channeling conduct water channel easily etc.

The invention effect

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

Description of drawings

Fig. 1 is the stereogram of the outward appearance of expression refrigerator.

Fig. 2 is the stereogram of the outward appearance of the expression refrigerator of opening the 3rd and the 4th.

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

Fig. 4 is the stereogram of the outward appearance of the expression refrigerator that omits first and second.

Fig. 5 is the sketch map of expression kind of refrigeration cycle unit.

Fig. 6 representes the constituent apparatus of kind of refrigeration cycle unit is installed in the stereogram under the state in the refrigerator.

Fig. 7 is a stereogram of representing the bottom dorsal part of refrigerator from the dorsal part of refrigerator.

Fig. 8 is the stereogram of expression evaporating pan.

Fig. 9 is the cross-sectional perspective view that expression is installed in evaporating pan the installment state in the compressor.

Figure 10 is the stereogram at expression bottom dorsal part under the state of the dorsal part perspective partial of refrigerator.

Symbol description

100 refrigerators

101 compressors

102 condensers

103 evaporimeters

104 cold-producing mediums return pipe arrangement

105 bypass pipes

106 transfer valves

107 valves

108 tube connectors

110 kind of refrigeration cycle unit

111 first

112 the 3rd

113 through holes

114 water refrigerating plants

115 insulators

116 running water pipes

120 Machine Rooms

121 second

122 the 4th

123 supply ports

124 first condensers

125 second condensers

126 the 3rd condensers

131 first evaporimeters

132 second evaporimeters

133 guiding water channels

134 second guiding water channels

140 evaporating pans

141 hair-dryers

143 recesses

145 rakes

147 entrance holes

150 box main bodies

151 first casings

152 second casings

153 partition walls

156 outer containers

Case in 157

160 first capillaries

161 second capillaries

The specific embodiment

The preferred forms of invention

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

(embodiment 1)

Fig. 1 is the stereogram of the outward appearance of expression refrigerator.

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

First 111 be towards box main body 150 with the opening portion on right side to open and close the inaccessible door of mode freely.In this embodiment, first 111 according to being the mode of center rotation with the rotating shaft that extends at above-below direction in the place ahead of the right side wall of box main body 150, is installed on the box main body 150 through hinge (not showing among Fig. 1).First 111 is in the long rectangle of above-below direction, and is disposed at from the scope of top to the bottom of refrigerator 100, and said rotating shaft passes through at first 111 right end edge portion.

Second 121 be towards box main body 150 with the opening portion in left side to open and close the inaccessible door of mode freely.In this embodiment, second 121 according to being the mode of center rotation with the rotating shaft that extends at above-below direction in the place ahead of the left side wall of box main body 150, is installed on the box main body 150 through hinge (not shown).Second 121 is in the long rectangle of above-below direction, and be disposed at refrigerator 100 from top to the scope of bottom, said rotating shaft passes through at second 121 left end edge portion.

Through hole 113 is the holes that connect at thickness direction first 111.The effect of through hole 113 is, does not open first 111, takes out the reserve that is stored in first 111 rear, perhaps puts into reserve it is stored at first 111 rear.

The 3rd 112 is to open and close the door of the inaccessible through hole 113 of mode freely.In this embodiment, the 3rd 112 is the mode of center rotation according to the rotating shaft that extends at left and right directions with the following ora terminalis at through hole 113, is installed on first 111 through the hinge (not shown).See that from the place ahead the 3rd 112 roughly is square (four jiaos is fillet), said rotating shaft passes through at the 3rd 112 lower end edge portion.

The 4th 122 be with the supply port 123 of water refrigerating plant 114 with the inaccessible door of the mode of freely openable, 110 pairs of the kind of refrigeration cycle unit that water refrigerating plant 114 utilizes refrigerator 100 to be equipped with are supplied with refrigerator 100 inner running water and are freezed.

Fig. 3 is the stereogram of the outward appearance of the expression refrigerator of opening first and second.

In Fig. 3, also put down in writing the stock A that is stored in the refrigerator 100.

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

First casing 151 is the casings with heat-proof quality in above-below direction length that have peristome and formation refrigerating chamber at front surface.In this embodiment, first casing 151 is disposed at the right side of refrigerator 100 in the whole above-below direction zone of refrigerator 100.Refrigerating chamber is the space that the temperature inside the box is remained on the temperature band more than 0 ℃; Particularly preserve under the situation of vegetables etc. at high humidity, it is to make the cold air that circulates in the refrigerating chamber can directly not contact mode and subregion of vegetables and the space of carrying out keeping in set inside to form drawer box.

Second casing 152 is the casings with heat-proof quality in above-below direction length that have peristome and formation refrigerating chamber at front surface.In this embodiment, second casing 152 in the whole above-below direction area configurations of refrigerator 100 in the left side of refrigerator.Refrigerating chamber is the low room temperature of ratio temperature of refrigerating chamber that keeps subzero about 18 ℃, the space of stocks such as keeping frozen food.

Outer container 156 is metallic plates that first casing 151 and second casing 152 in the left and right directions disposed adjacent are covered.

Here, the box main body in this embodiment 150 is made in such a way.That is the refrigerating chamber and the refrigerating chamber that, are separated out by partition wall 153 pass through the one-body molded manufacturing of resin respectively independently through interior case 157.In the outside of interior case 157, dispose outer container through the interval of stipulating with the mode that covers interior case 157 with interior case 157.The inside of said partition wall 153 also is provided with the slit that is communicated with slit between outer container 156 and interior case 157.In the slit that is arranged at slit and partition wall 153 between outer container 156 and the interior case 157, for example fill hard polyurethane foams etc. and form heat-barrier material.Make box main body 150 according to above method.

Therefore, in this embodiment, first casing 151 and second casing, 152 adjacent tank walls form an inseparable integral body, and the shared partition wall 153 of first casing 151 and second casing is as wall portion.

Below, kind of refrigeration cycle unit and the member thereof that is arranged in the refrigerator 100 described.

Fig. 5 is the sketch map of expression kind of refrigeration cycle unit.

Kind of refrigeration cycle unit 110 passes through by condenser 102 release heat; Absorb heat and possess the function of heat being shifted to by the strong hand another space from one of them space by evaporimeter 103; Evaporimeter 103 is disposed at the position that the inside of refrigerator 100 is cooled off; Condenser 102 is disposed at the Machine Room of the outside 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 is adopted is the device that comprises compressor 101 (Compressor), condenser 102 (Condenser) and evaporimeter 103 (Evaporator); Returning pipe arrangement 104 by the cold-producing medium as refrigerant path connects said device ring-type; Through making cold-producing medium circulation, thereby realize kind of refrigeration cycle.In this embodiment, refrigerator 100 also comprises bypass pipe 105, and Machine Room 120 comprises transfer valve 106, valve 107, evaporating pan 140 and hair-dryer 141.

Compressor 101 is that the cold-producing medium of flowing through is returned the device that pipe arrangement 104 interior gasiform cold-producing mediums compress the pressure that improves cold-producing medium.Compressor 101 is disposed at the inside of Machine Room 120 of the bottom dorsal part of refrigerator 100, and is disposed at the below as second casing 152 of refrigerating chamber.Compressor 101 is installed on Machine Room 120 through insulator 115, and is difficult to pass installation under the state of refrigerator 100 in the vibration of compressor 101.In this embodiment, even consider insulator 115, the upper surface of compressor 101 is positioned at the position lower than the upper surface of first condenser 124.

Condenser 102 is that the heat with the gasiform cold-producing medium of increased pressure is dispersed into and comes the cooling refrigeration agent in the atmosphere, cold-producing medium is become the device of the high liquid refrigerant of pressure.In this embodiment, condenser 102 comprises first condenser 124, second condenser 125 and the 3rd condenser 126.

First condenser 124 is main condensers direct and that air carries out heat exchange.First condenser 124 is disposed at the below as first casing 151 of refrigerating chamber, is being exposed under the air state, is disposed at the inside of Machine Room 120 of the dorsal part bottom of refrigerator 100.In embodiment, main condenser is that the radiating fin of the thin plate that in pipe arrangement, will form with the good material of heat conductivities such as aluminium is rolled into spiral helicine helical fin coil specification, and the pipe arrangement complications are repeatedly formed.

Second condenser 125 is between the sidewall and outer container 156 in the outside of first casing 151, and the inner face that is close to outer container 156 is with tortuous state configuration, and the auxiliary condenser that carries out heat exchange through metal outer container 156 and air.Between the inside of second condenser 125 and first casing 151, heat-barrier material is arranged, therefore, be difficult to have influence on the inside of first casing 151 from the heat of second condenser, 125 generations.The inside of first casing 151 is the higher refrigerating chambers of temperature, and therefore, the thermal gradient of second condenser 125 and first casing, 151 inside is low, is difficult to conveying heat.

The 3rd condenser 126 is the auxiliary condensers that are disposed at the peristome periphery of second casing 152, and has the temperature of peristome periphery of coming the cooling refrigeration agent and improving second casing 152 through heat radiation to prevent the function of dewfall.

If adopt aforesaid way to constitute condenser 102; So; Cause being exposed under the situation of ability drop of first condenser 124 in the atmosphere in the accumulation because of dust etc., second condenser 125 also can remedy the ability as condenser 102, therefore; Need not the maintenance carried out in order to ensure the ability of kind of refrigeration cycle unit 110, can keep its refrigerating capacity for a long time.

Owing to can prevent the dewfall of the peristome of refrigerating chamber, therefore, can prevent that second 121 the seal that causes because of frosting from descending, and can improve or keep the efficiency of refrigerator 100.

Evaporimeter 103 is the devices that make cold-producing medium evaporation in inside and absorb the heat that is present in ambient air etc.In this embodiment, evaporimeter 103 is made up of first evaporimeter 131 and second evaporimeter 132 that connected tube 108 is connected in series.Tube connector 108 connects the back side of first casing 151 and the back side of second casing 152 is also passed through in the heat-barrier material, and evaporimeter is connected with two ends of tube connector 108.

First evaporimeter 131 is the evaporimeters that are connected in series and are arranged at the back of first casing 151 with the 3rd condenser 126, has the effect of the inside of cooling first casing 151.In the refrigerating chamber height double door formula refrigerator identical with the refrigerating chamber height; In order refrigerating chamber to be cooled to all sidedly approximately subzero 18 ℃; Short transverse in refrigerating chamber disposes second evaporimeter 132; Relative therewith, the refrigerating chamber cooling to be compared with second evaporimeter 132 at first about about 0～6 ℃ evaporimeter 131 higher than freezer temperature, the configuration height of the short transverse in refrigerating chamber is not high; In order to ensure bigger volume in the case on the depth direction of refrigerating chamber, littler than second evaporimeter 132.

Second evaporimeter 132 is to be connected in series with first evaporimeter 131, and is arranged at the evaporimeter at the back of second casing 152, has the effect of the inside of cooling second casing 152.Second evaporimeter 132 is used for cooling off refrigerating chamber, and is therefore, big than first evaporimeter 131.

In this embodiment, first evaporimeter 131 and second evaporimeter 132 all use fin tube type heat exchanger, but the present invention is not limited thereto, and the heat exchanger etc. that also can use corrugated fin and flat tube is heat exchanger arbitrarily.

The pipe arrangement of first evaporimeter 131 and second evaporimeter 132 is all tortuous crooked by repeatedly, at the entrance and exit of the top of evaporimeter configuration cold-producing medium inflow.

As stated, independent outfit is used for cooling off first evaporimeter 131 and second evaporimeter 132 that is used for cooling off second casing 152 (refrigerating chamber) of first casing 151 (refrigerating chamber), so just can be fit to the refrigeration of each design temperature band.

Particularly under the situation of the refrigerating chamber of the lengthwise that is equipped with this embodiment, the temperature difference for the above-below direction that reduces 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 just might excessively be freezed, and must carry out heat insulation fully to refrigerating chamber and evaporimeter.In the case, the capacity of refrigerating chamber receives the crowded of heat-barrier material.Therefore; As according to the invention; At the back of first casing 151 (refrigerating chamber) first evaporimeter 131 that is fit to the refrigerating chamber refrigeration is set, second evaporimeter 132 that is fit to cool off equably refrigerating chamber is set at the back of second casing 152 (refrigerating chamber), so just can improve the capacity of refrigerating chamber.

Hair-dryer 141 is the devices that can form air draught, in this embodiment, adopts aerofoil fan.Hair-dryer 141 is disposed at the inside of Machine Room 120 and between first condenser 124 and compressor 101, becomes to erect the shape configuration.Hair-dryer 141 can form from first condenser 124 towards the air draught of compressor 101 towards and dispose.

Like this, air towards compressor 101, that is, to high temperature one side, therefore, can reduce heat effects first condenser 124 and transfer valve 106 and valve 107 of compressor 101 from low temperature one effluent from first condenser 124 as much as possible.In addition, can the thickness of aerofoil fan be done thinly, therefore, also can it be accommodated in the narrow space of Machine Room 120.

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

Transfer valve 106 is disposed at the inside of Machine Room 120, is used for assembling and maintenance of refrigerator 100 etc.In this embodiment, transfer valve 106 more is positioned at the upper reaches with respect to the air draught of hair-dryer 141 manufacturings than first condenser 124.That is, do not have the device of heat radiation at the upper reaches of transfer valve 106, transfer valve 106 is installed on the minimum position of temperature in the Machine Room 120.

This be because; Transfer valve 106 switches the runner that flows into first evaporimeter 131 or second evaporimeter 132 cold-producing medium before at once; Be not vulnerable to the influence of the heat of first condenser 124 and compressor 101; The decline of kind of refrigeration cycle unit 110 abilities can be suppressed, the simplicity of the assembling and the maintenance of refrigerator 100 can be guaranteed simultaneously.

The side in the downstream of transfer valve 106, first capillary 160 that is connected with first evaporimeter 131 and second capillary 161 that is connected with second evaporimeter 132 are can switching way connecting.

Valve 107 is to being connected with running water pipe and supplying with running water and cut off the valve that running water is selected to refrigerator 100.Valve 107 is disposed at the inside of Machine Room 120, is used for assembling and maintenance of refrigerator 100 etc.In this embodiment, valve 107 more is positioned at the upper reaches with respect to the air draught of hair-dryer 141 manufacturings than first condenser 124.That is, do not have the device of heat radiation at the upper reaches of valve 107, valve 107 is installed on the minimum position of temperature in the Machine Room 120.

Valve 107 is the devices that constitute water refrigerating plant 114.Here, water refrigerating plant 114 is the devices that are connected with running water pipe 116, is to supply with the running water by first evaporimeter, 131 refrigeration through supply port 123, to the device of automatic ice-making device (not shown) water supply.

Bypass pipe 105 is connected between transfer valve 106 and second capillary 161, through transfer valve 106 with the 3rd condenser 126 and second evaporimeter, 132 direct-connected pipes.Here, directly connection is meant, is not cold-producing medium is imported second evaporimeter 132 via first evaporimeter 131, but walks around first evaporimeter 131 from transfer valve 106, and cold-producing medium is directly imported second evaporimeter 132.

Between the transfer valve 106 and second capillary 161, be provided with the bypass pipe 105 that is used for the pipe connection, still, also can directly connect second capillary 161 at transfer valve 106.

The cold-producing medium that is adopted in the kind of refrigeration cycle unit 110 of refrigerator 100 does not have special restriction, for example, can represent the hydrocarbon cold-producing medium for example.

Here, the hydrocarbon cold-producing medium for example is propane and iso-butane.They are compared with the hydrogen fluorohydrocarbon with HCFC, and are minimum to the influence of global warming, therefore very desirable.

As previously discussed; Second evaporimeter 132 that will cool off refrigerating chamber in the downstream of first evaporimeter 131 of refrigerated compartment is connected in series; And, utilize transfer valve 106 to switch refrigerant flow path, constitute and to make only the flow through kind of refrigeration cycle of second evaporimeter 132 of downstream one side of cold-producing medium; Be not cooled under the situation of design temperature at refrigerating chamber and refrigerating chamber; In order to make cold-producing medium two evaporimeters of flowing through, control kind of refrigeration cycle through switching transfer valve 106, reach at refrigerating chamber under the situation of design temperature; Make do not flow through first evaporimeter 131 of refrigerated compartment of cold-producing medium through switching transfer valve 106, the control kind of refrigeration cycle is only flowed through cold-producing medium only to cool off second evaporimeter 132 of refrigerating chamber.

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 second evaporimeter 132, select to first evaporimeter 131 to import cold-producing medium on one side.Like this, even, also can be fit to the control of first casing 151 (refrigerating chamber) to first evaporimeter 131 in order not make under the long-time continuously situation about turning round of second evaporimeter 132 in long second casing 152 (refrigerating chamber) occurrence temperature inequality of above-below direction.

Owing to can dispose first evaporimeter 131 and second evaporimeter 132 at left and right directions, therefore, can shorten the length of the tube connector 108 that connects first evaporimeter 131 and second evaporimeter 132; So; Utilizing transfer valve 106 all to import under the situation of cold-producing medium to first evaporimeter 131 and second evaporimeter 132, not only can reduce the refrigeration losses in the tube connector 108, improve the refrigerating efficiency of second evaporimeter 132; And can reduce the refrigerant amount of combustible refrigerant, improve explosion-proof.

First evaporimeter 131 is configured in the below of refrigerating chamber, like this, first evaporimeter 131 with dispose the reduced distances of the Machine Room of compressor; Just in case at combustible refrigerant under near the situation of leakage first evaporimeter 131, because the proportion of combustible refrigerant is bigger than air, so accumulate downwards; Further; The drainpipe of the defrost water through discharging first evaporimeter 131 can easily import to the Machine Room that disposes compressor 101, and owing to can outside case, open from the Machine Room, so; The combustible refrigerant that can reduce leakage is trapped in and causes its concentration to increase in the case, and can improve explosion-proof.

Under the situation that combustible refrigerant leaks from second evaporimeter 132, also, can in the Machine Room, discharge the cold-producing medium that leaks through drainpipe, and can prevent that the cold-producing medium of heads is trapped in the case, can improve explosion-proof with above-mentioned same.

As stated; First evaporimeter 131 and second evaporimeter 132 are configured in the below of refrigerating chamber and refrigerating chamber respectively; So that the height of the bottom of two evaporimeters 103 mode unanimous on the whole disposes, improve discharge property, still through Machine Room discharge to case outside in the case; Also can improve to the top with the position of first evaporimeter 131 that will be shorter than second evaporimeter 132, the height of the upper end of two evaporimeters 103 mode unanimous on the whole disposes.

Like this; The tube connector 108 of refrigerant inlet portion that connects refrigerant outlet portion and second evaporimeter 132 of first evaporimeter 131 just can be provided with on approximate horizontal ground between first evaporimeter 131 and second evaporimeter 132; And can make the pipe arrangement distance of tube connector 108 the shortest; Through switching transfer valve 106 cold-producing medium is flowed through under the situation of first evaporimeter 131 and second evaporimeter 132; Can further reduce the refrigeration losses in the tube connector 108, further reduce the refrigerant amount of combustible refrigerant.

Adopt the refrigerator 100 of said structure, not only can improve whole efficiency, and can help energy-conservation.

Fig. 8 is the stereogram of expression evaporating pan.

Fig. 9 is illustrated in the cross-sectional perspective view that the state of evaporating pan is installed in the compressor.

Evaporating pan 140 is to store from kind of refrigeration cycle unit 110 (particularly first evaporimeter 131, the second evaporimeter 132) defrost water (dew) of collecting and container that makes its evaporation, and is the rectangular box of top opening.Evaporating pan 140 is disposed between second casing 152 and the compressor 101, has from the recess 143 of upper surface to the lateral side regions contact of compressor 101.Evaporating pan 140 comprises the rake 145 with air flow compressor 101 guiding of the top of the compressor 101 of flowing through.Pars intermedia at rake 145 also is provided with entrance hole 147, is used for the air conductance is gone into the inside of evaporating pan 140 promoting the defrosting evaporation of water in the evaporating pan 140.

Like this, utilize the rake 145 of evaporating pan 140, the surface of a large amount of air draughts contact compressors 101 that form by hair-dryer 141, cooling compressor 101 effectively.

As shown in the drawing, be provided with guiding water channel 133 in the inside of refrigerator 100, it is the body that the defrost water that produces from first evaporimeter 131 is guided to evaporating pan 140.Also be provided with the second guiding water channel 134 in addition, it is the body that the defrost water that produces from second evaporimeter 132 is guided to evaporating pan 140.

Like this; Be installed in defrost water that heater melts in first evaporimeter 131 and second evaporimeter 132 produced in attached to the defrost process of the frost of evaporimeter 103 etc. in utilization and guide water channel 134, can make defrost water concentrate on the inside of evaporating pan 140 through guiding water channel 133 and second.

According to above refrigerator 100; In kind of refrigeration cycle unit 110; Configuration compressor 101 below second casing 152 that forms refrigerating chamber, configuration first condenser 124 below first casing 151 that forms refrigerating chamber disposes second condenser 125 at the outside sidewall of first casing 151.Therefore, the pipe arrangement that links them can be shortened, therefore, the efficiency of kind of refrigeration cycle unit 110 can be improved.When assembling refrigerator 100, pipe arrangement is also easy to operate, therefore, and assembling easily.

First condenser 124 that the aspect ratio of compressor 101 is disposed in the Machine Room 120 is low, therefore, can not sacrifice the volume of second casing 152, can enlarge the space between second casing 152 and the compressor 101 fully.The heat that therefore, can suppress to distribute from compressor 101 is to the influence of second casing 152.In addition, between second casing 152 and compressor 101, there is the space, therefore, can in this space, disposes evaporating pan 140.So just can further suppress the influence of the heat of compressor 101.

The possibility of using on the industry

The present invention can be used in the refrigerator of home-use and office usefulness, and can be used in refrigerating chamber and refrigerating chamber in the refrigerator of left and right directions disposed adjacent.

Claims

1. a refrigerator comprises: first casing that has peristome and formation refrigerating chamber at front surface; Second casing that has peristome and formation refrigerating chamber at front surface; With the metal outer container that will cover at said first casing and said second casing of left and right directions disposed adjacent, said refrigerator is characterised in that, also comprises:

Be disposed at the compressor of the below of said second casing;

Be connected with said compressor, and be disposed at the below of said first casing, first condenser that directly carries out heat exchange with air;

Be connected with said first condenser, and be disposed between said first casing and the said outer container, carry out second condenser of heat exchange through said outer container and air; With

Be connected with said second condenser, make the evaporimeter of cold-producing medium evaporation.

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

Be disposed between said compressor and said first condenser, and produce hair-dryer the air stream of said compressor and the cooling of said first condenser.

3. according to claim 1 or claim 2 refrigerator is characterized in that:

Said evaporimeter comprises: be connected with said second condenser, and be disposed at first evaporimeter at the back of said first casing; Be connected with said first evaporator series, and be disposed at second evaporimeter at the back of said second casing,

Said refrigerator also comprises: the bypass pipe that via said first evaporimeter said second condenser is not connected with said second evaporimeter; With to being to said first evaporimeter the supply system cryogen or the transfer valve of directly selecting from said second condenser to the second evaporimeter the supply system cryogen from said second condenser.

4. refrigerator as claimed in claim 3 is characterized in that:

Said transfer valve is arranged at a side that disposes first condenser with respect to said hair-dryer.

5. refrigerator as claimed in claim 2 is characterized in that:

Also comprise the water refrigerating plant, said water refrigerating plant has the running water that will be connected with running water pipe is conducted to said refrigerator and cuts off the valve that running water is selected, wherein,

Said valve is arranged at a side that disposes first condenser with respect to said hair-dryer.

6. refrigerator as claimed in claim 2 is characterized in that:

The direction of the air stream that said hair-dryer produces is from the direction of said second condenser towards said compressor.

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

Also comprise the evaporating pan that the defrost water that is produced by evaporimeter is stored and evaporates, wherein,

Said evaporating pan is disposed between said second casing and the said compressor, has from the recess of upper surface to the contacts side surfaces of said compressor.

8. refrigerator as claimed in claim 7 is characterized in that:

Also comprise being disposed between said compressor and said first condenser, produce the hair-dryer of the air stream that said compressor and said first condenser are cooled off,

Said evaporating pan has the rake of the stream of flow air above said compressor guiding to said compressor.

9. like claim 7 or 8 described refrigerators, it is characterized in that:

Said evaporimeter comprises: be connected with said second condenser, and be disposed at first evaporimeter at the back of said first casing; Be connected with said first evaporimeter, and be disposed at second evaporimeter at the back of said second casing,

This refrigerator also comprises: the guiding water channel that will guide to said evaporating pan from the defrost water that said first evaporimeter produces.

10. refrigerator as claimed in claim 7 is characterized in that:

The height of said first condenser of the aspect ratio of said compressor is low.