CN107923696A - Ultra low temperature freezer - Google Patents
Ultra low temperature freezer Download PDFInfo
- Publication number
- CN107923696A CN107923696A CN201680046753.3A CN201680046753A CN107923696A CN 107923696 A CN107923696 A CN 107923696A CN 201680046753 A CN201680046753 A CN 201680046753A CN 107923696 A CN107923696 A CN 107923696A
- Authority
- CN
- China
- Prior art keywords
- low temperature
- ultra low
- temperature freezer
- adiabatic wall
- insulated cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/04—Self-contained movable devices, e.g. domestic refrigerators specially adapted for storing deep-frozen articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/026—Doors; Covers for open-top cabinets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/062—Walls defining a cabinet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/065—Details
- F25D23/066—Liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/12—Insulation with respect to heat using an insulating packing material
- F25D2201/126—Insulation with respect to heat using an insulating packing material of cellular type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/10—Refrigerator top-coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/02—Geometry problems
Abstract
Ultra low temperature freezer possesses：Insulated cabinet, it divides the storage room in upper surface with opening；And insulated door, the opening, which can be opened and closed, in it makes it possible to face the storage room from the front-surface side of the insulated cabinet, and the both side surface of insulated cabinet described in the thickness ratio of the front surface of the insulated cabinet and the thickness of rear surface are thin.
Description
Technical field
The present invention relates to ultra low temperature freezer.
Background technology
Long-term storage of preservation, frozen food for bio-tissue etc., develops a kind of ultra low temperature freezer, will freeze
The ultralow temperature of the internal cooling in storehouse to such as less than -80 DEG C.
It is necessary to have higher thermal insulation in order to make the inside of freezer maintain ultralow temperature for such ultra low temperature freezer
Can, develop various technologies for this (referring for example to patent document 1).
Citation
Patent document
Patent document 1：JP speciallys permit No. 5026736
The content of the invention
The subject that the invention solves
On the other hand, ultra low temperature freezer is especially because the temperature in freezer is relatively low, therefore in order in freezing-inhibiting storehouse
Temperature rises, it is desired to be able to carries out the opening and closing of door when picking and placeing of storage item within a short period of time as far as possible.In addition, in order to realize
The safety of operation when picking and placeing receiving material from freezer, also seeks that picking and placeing for receiving material can be carried out as easily as possible.
In addition, on the other hand, high reliability is also required for ultra low temperature freezer, even becomes picking and placeing for storage item
In the case of readily, prevent that the intensity decline of ultra low temperature freezer is also critically important.
The present invention in view of the above subject and make, its object is to, there is provided it is a kind of can also while inhibition strength declines
Relatively easily carry out the ultra low temperature freezer picked and placeed of receiving material.
Means for solving the problems
Ultra low temperature freezer according to the present invention possesses：Insulated cabinet, it in upper surface to having the storage room of opening to carry out
Division；And insulated door, the opening, which can be opened and closed, in it makes it possible to the front-surface side from the insulated cabinet in face of described
Storage room, the both side surface of insulated cabinet described in the thickness ratio of the front surface of the insulated cabinet and the thickness of rear surface are thin.
Invention effect
In accordance with the invention it is possible to provide a kind of can relatively easily carry out receiving material while inhibition strength declines
The ultra low temperature freezer picked and placeed.
Brief description of the drawings
Fig. 1 is the stereoscopic figure of the ultra low temperature freezer involved by present embodiment.
Fig. 2 is the stereoscopic figure for the state that the insulated door of the ultra low temperature freezer involved by present embodiment is opened.
Fig. 3 is the front view being had an X-rayed in the storage room to the ultra low temperature freezer involved by present embodiment.
Fig. 4 is the top view being had an X-rayed in the storage room to the ultra low temperature freezer involved by present embodiment.
Fig. 5 is the side view being had an X-rayed in the storage room to the ultra low temperature freezer involved by present embodiment.
Fig. 6 is the stereoscopic being had an X-rayed to the vacuum heat-insulating plate of the ultra low temperature freezer involved by present embodiment
Figure.
Fig. 7 is the exploded perspective view of the ultra low temperature freezer involved by present embodiment from back-surface side.
Fig. 8 is the figure shown in the pattern of the ultra low temperature freezer installation inner cover involved by present embodiment.
Fig. 9 is the stereoscopic figure of the storage shelf involved by present embodiment.
Figure 10 is the figure for the coolant loop for showing the ultra low temperature freezer involved by present embodiment.
Embodiment
By the record of this specification and attached drawing, at least following item is made apparent from.
Ultra low temperature freezer 1 involved by present embodiment be will can be cooled in storage room 4 described later given temperature with
Under (such as less than -80 DEG C) ultralow temperature refrigerating plant, be for example suitable for bio-tissue, the corpse or other object for laboratory examination and chemical testing for carrying out prolonged cold preservation
Or the cryopreservation of the receiving material such as frozen food.
The structure of==ultra low temperature freezer==
Fig. 1 shows the stereoscopic figure of the ultra low temperature freezer 1 involved by present embodiment.In addition, Fig. 2 shows ultralow temperature ice
The stereoscopic figure for the state that the insulated door 13 of case 1 is opened.Fig. 3 is the master for the ultra low temperature freezer 1 being had an X-rayed to storage room 4
View.Fig. 4 is the top view for the ultra low temperature freezer 1 being had an X-rayed to storage room 4.Fig. 5 is to have carried out perspective to storage room 4
The side view of ultra low temperature freezer 1.
In addition, in the following description, by positive opposite with ultra low temperature freezer 1 from left-hand side towards right-hand side
Direction is set to the positive direction of X-axis, will be set to the positive direction of Y-axis towards the direction of far-reaching side from nearby side, and Z is set to upwards by vertical
The positive direction of axis.
Ultra low temperature freezer 1 is configured to possess：The insulated cabinet 2 of approximately parallelepiped body shape, it has upper surface the storage of opening
Room 4 is deposited to be divided；Insulated door 13, the opening of storage room 4 can be opened and closed in it, enabling from the preceding table of insulated cabinet 2
Side is to storage room 4；With Machine Room 3, it is configured in the side of insulated cabinet 2.
Insulated cabinet 2 has front side adiabatic wall (front surface) 2A, rear side adiabatic wall (rear surface) 2B, right side adiabatic wall (side table
Face) 2C, left side adiabatic wall (side surface) 2D and thermal insulation bottom 2E, storage room 4 is formd in inside.In fig. 2 it is shown that storing up
Deposit the pattern that storage shelf 50 is accommodated with room 4.
It is laminated for as shown in figure 9, storage shelf 50 is configured to have 51 between the storing of multilayer.In each magazine 51, Neng Goufen
The container (not shown) of the sample of bio-tissue etc. Shou Na not contained.Moreover, operating personnel, which holds handle 52, lifts storage
Frame 50, carries out the picking and placeing to storage room 4 of storage shelf 50.
Therefore, carrying out storage shelf 50 to storage room 4 when picking and placeing, operating personnel need by storage shelf 50 lift to more than
The height of the front side adiabatic wall 2A of insulated cabinet 2.
Ultra low temperature freezer 1 involved by present embodiment is in order to make storage shelf 50 become easy to picking and placeing for storage room 4, such as
Shown in Fig. 4, the thickness T1 of front side adiabatic wall 2A is formed as to the thickness of the thickness T2 than rear side adiabatic wall 2B, right side adiabatic wall 2C
The thickness T4 of T3 and left side adiabatic wall 2D are thin.
By the way that insulated cabinet 2 is configured to such shape, so that operating personnel is accommodating the grade of storage shelf 50 to storage room 4
When thing is picked and placeed, the handling of storage shelf 50 can be being carried out at the position of the standing place of operating personnel, thus
Storage shelf 50 can be made to become easy to picking and placeing for storage room 4.Moreover, therefore, it is possible to carry out storage shelf within than the short period
50 picking and placeing to storage room 4, can shorten the time for being switched on insulated door 13.Therefore, it is possible to suppress the temperature in storage room 4
Rise.
In addition, because the handling of storage shelf 50 can carried out at the position of the standing place of operating personnel,
So as to picking and placeing operation with what uncomfortable few posture carried out storage shelf 50, additionally it is possible to improve the security of operation.
In addition, it is highly preferred that the thickness T1 of front side adiabatic wall 2A be set to the thickness T2 of rear side adiabatic wall 2B less than 2/3 be
Preferably.Mode in this way, can make pick and place operation of the above-mentioned storage shelf 50 to storage room 4 become to be more prone to.
It is further preferred that the thickness T1 of front side adiabatic wall 2A be set to the thickness T2 of rear side adiabatic wall 2B less than 1/3 be
Preferably.Mode in this way, can make pick and place operation of the storage shelf 50 to storage room 4 further become easy.
In addition, by more than 1/4 of the thickness T2 of adiabatic wall 2B on rear side of the thickness T1 of front side adiabatic wall 2A is set to, so that
It can suppress the decline of the cooling performance of insulated cabinet 2, and the mechanical strength for suppressing insulated cabinet 2 declines.
In addition, in fig. 2 it is shown that contain the pattern of a storage shelf 50 in storage room 4, but storing certainly
In the range of receiving volume in room 4, multiple storage shelfs 50 can be accommodated in storage room 4.Therefore, by by front side adiabatic wall
The thickness T1 of 2A is set to thinner than the thickness T2 of rear side adiabatic wall 2B as described above, so that the volume enlargement of storage room 4, additionally it is possible to
Accommodate more storage shelfs 50.
Multiple (being in the present embodiment 5) that insulated door 13 is arranged side by side along the upper end of rear side adiabatic wall 2B
Pivot member 14 carries out pivot branch or axis branch, by around by these pivot members 14 formed along the upper of rear side adiabatic wall 2B
The central shaft that the side of end is upwardly formed rotate so as to which the opening of insulated cabinet 2 be opened and closed.It is provided with insulated door 13
Handle portion 16, operating personnel carry out the opening and closing operations of insulated door 13 by operation handlebar hand 16.
In addition, the insulated cabinet 2 involved by present embodiment is configured to have：The interior case 7 of upper surface open, surround in case 7
Around outer container 6, breaker 8, heat-insulating material 9 and vacuum heat-insulating plate 12.
Outer container 6 is made of the plate of steel plate, upper opening, forms the outside wall surface and outer bottom of insulated cabinet 2.Interior case 7
It is made of the good metal plate of the heat conductivities such as aluminium, similarly upper opening, forms the internal face of insulated cabinet 2 and interior
Bottom surface.Breaker 8 is plastic component, is installed as between the upper end of connection outer container 6 and interior case 7.
Heat-insulating material 9 is the polyurethane resin being filled in the space surrounded by outer container 6, interior case 7 and breaker 8.Absolutely
Hot material 9 is filled in front side adiabatic wall 2A, rear side adiabatic wall 2B, right side adiabatic wall 2C, the left side adiabatic wall of insulated cabinet 2 respectively
2D and thermal insulation bottom 2E.
Vacuum heat-insulating plate 12 is the component for having thermal insulation, it passes through by the aluminium without aeration or synthetic resin etc.
Mineral wool is stored in the container that the multilayer film formed is formed, is arranged the air in container by given vacuum exhaust unit
Go out, and the opening portion of the container is engaged by thermal welding etc., so as to form.
Vacuum heat-insulating plate 12 is installed on and is filled between above-mentioned heat-insulating material 9 and outer container 6 between interior case 7 and outer container 6.
Vacuum heat-insulating plate 12 involved by present embodiment has the heat-insulating property than 9 higher of heat-insulating material.Therefore, pass through
Heat-insulating material 9 and vacuum heat-insulating plate 12 are used at the same time, so that compared with using only the situation of heat-insulating material 9, higher can be obtained
Heat-insulating property.
Therefore, it is exhausted using vacuum at the same time in the adiabatic wall 2A of front side in the ultra low temperature freezer 1 involved by present embodiment
Hot plate 12 and heat-insulating material 9.More specifically, in the present embodiment, vacuum heat-insulating plate 12 is only in the adiabatic wall 2A of front side, peace
Between interior case 7 and outer container 6.Show the ultra low temperature freezer 1 involved by present embodiment only in front side in Fig. 4 and Fig. 6
There is the pattern of vacuum heat-insulating plate 12 in adiabatic wall 2A.
Mode in this way, thus even in rear side adiabatic wall 2B, right side adiabatic wall 2C, left side adiabatic wall 2D phases
Than, by the thickness of front side adiabatic wall 2A formed it is relatively thin in the case of, can also ensure that and rear side adiabatic wall 2B, right side adiabatic wall
2C, left side adiabatic wall 2D equal heat-insulating property.Thus, it is also possible to suppress in order to will be cooled in storage room 4 given temperature with
Under power consumption needed for (such as less than -80 DEG C).
In addition, because be configured to only set relatively thin by the thickness of front side adiabatic wall 2A, and rear side adiabatic wall 2B, right side are exhausted
Hot wall 2C, left side adiabatic wall 2D thickness ratio on front side of adiabatic wall 2A it is thick, institute by the intensity of insulated cabinet 2 so as to decline suppression most
Small limit.Therefore, it is possible to maintain the reliabilities such as the fault-resistant of ultra low temperature freezer 1, durability.
In addition, in the ultra low temperature freezer 1 involved by present embodiment, as shown in figure 4, vacuum heat-insulating plate 12 is exhausted in front side
It is installed in hot wall 2A between heat-insulating material 9 and outer container 6.
Like this, by installing 12 heat-insulating material 9 of vacuum heat-insulating plate between vacuum heat-insulating plate 12 and interior case 7,
So as to suppress to be cooled to the temperature with the vacuum heat-insulating plate 12 caused by the interior case 6 of the inside equal extent of storage room 4
Decline, can prevent from cracking in vacuum heat-insulating plate 12, rupture, the situation that breakage etc. destroys and causes heat-insulating property to decline.
Moreover, it is able to maintain that the reliabilities such as the fault-resistant of ultra low temperature freezer 1, durability.
In addition, as shown in Fig. 3, Fig. 5, Fig. 8 etc., the ultra low temperature freezer 1 involved by present embodiment can be in breaker 8
The part mounting inner cover 15 (inner cover A15A, inner cover B15B) of inner circumferential side.Inner cover 15 has thermal insulation by expanded polystyrene (EPS) etc.
Plate is formed.
Mode in this way, so that during insulated door 2 is opened also storage room 4 can be closed by inner cover 15
Top opening, can prevent intrusion of the extraneous air into storage room 4, can prevent the temperature in storage room 4 from rising.
In addition, as shown in figure 8, the ultra low temperature freezer 1 involved by present embodiment is configured to use multiple inner covers 15
(be an inner cover A15A and two inner cover B15B in the example shown in Fig. 8) closes the opening of storage room 4.In this way
Mode, by need not open to storage room 4 pick and place storage shelf 50 unwanted place inner cover 15, can be by outside
Intrusion of the air into storage room 4 suppresses, in Min., to prevent the temperature in storage room 4 from rising.
If further, since open the inner cover 15 that the place needed for storage shelf 50 is picked and placeed to storage room 4, therefore can
The dismounting of inner cover 15 is easily carried out, homework burden can be mitigated.
If in addition, closing insulated door 13, inner cover 15 is adiabatic door 13 and is pressurized from above by, can be under adiabatci condition firmly
Ground sealed storage chamber 4.
Cooling in storage room 4 is carried out by the first coolant loop 100 and the second coolant loop 200.
Details are described below, and the first coolant loop 100 has the first compressor 101, condenser 102,104, pressure reducer
108 and first evaporator 111, by making refrigerant circulation in this order, so that the inside (storage room 4) of insulated cabinet 2 be cooled down
To below given temperature.
Similarly, the second coolant loop 200 have the second compressor 201, condenser 202,204, pressure reducer 208 and
Second evaporator 211, by making refrigerant circulation in this order, so as to being cooled to the inside (storage room 4) of insulated cabinet 2 to constant temperature
Below degree.
Moreover, form the second of the second coolant loop 200 of the first evaporator 111 and composition of the first coolant loop 100
211 heat exchange of evaporator it is installed as the side face (outer circumferential surface of interior case 7) in 9 side of heat-insulating material of interior case 7 and surrounds storage room 4.
In addition, in the ultra low temperature freezer 1 involved by present embodiment, the heat exchanger of the first coolant loop 100 is formed
109 and form the second coolant loop 200 heat exchanger 209, as shown in Fig. 4, Fig. 7, covered by heat-insulating material 9, and set
Put in the rear side adiabatic wall 2B of insulated cabinet 2.Moreover, the part of the setting heat exchanger 109,209 of rear wall 6B is by flat
Rear cover 6D is covered.
In addition, form the first compressor 101 of the first coolant loop 100, form the second compression of the second coolant loop 200
Machine 201 is accommodated in Machine Room 3 together with the various devices such as the control circuit of ultra low temperature freezer 1.
Control circuit possesses CPU (Central Processing Unit, central processing unit), memory, performs and is used for pair
The control program that ultra low temperature freezer 1 is controlled.
As shown in Figure 1, Machine Room 3 has：The side phase of front surface panel 3A, rear surface plate 3D, composition with setting insulated cabinet 2
The side surface plate 3B for the side surface tossed about.In front surface panel 3A and side surface plate 3B, formed with ventilation slit 3C.
In addition, the front surface panel 3A in Machine Room 3, is provided with the operation panel 21 for operating ultra low temperature freezer 1.
In addition, although not shown, but measure hole is through between Machine Room 3 and insulated cabinet 2.Measure hole perforation forms exhausted
Outer container 6, heat-insulating material 9 and the interior case 7 of hot tank 2 and formed so that storage room 4 is connected with Machine Room 3.From Machine Room 3 to
In storage room 4, temperature sensor can be inserted into by measuring hole.
Cable is drawn out to Machine Room 3 from the temperature sensor being inserted into storage room 4 by measuring hole, the cable and machine
Control circuit connection in tool room 3.Moreover, the measure hole and the gap of cable pass through by spongiform deformable and with exhausted
Embolism that hot material is formed is closed.In addition, under not temperature sensor mounted state, measure hole is adiabatic by the embolism
Close on ground.
The coolant loop of==ultra low temperature freezer==
Next, the coolant loop 150 of the ultra low temperature freezer 1 involved by present embodiment is illustrated with reference to Figure 10.
Figure 10 is the circuit diagram of an example of the coolant loop 150 of present embodiment.
As illustrated in Figure 10 like that, coolant loop 150 has：Two roughly the same coolant loops, i.e. the first refrigerant
100 and second coolant loop 200 of circuit.
<<<First coolant loop>>>
First coolant loop 100 possesses the first compressor 101, leading portion condenser 102 and back segment condenser 104, by gas
The separated current divider 107 of liquid, pressure reducer 108 and heat exchanger 109 and 110 and first evaporator 111 of pressure reducer, and structure
As ring-type so that the refrigerant from the discharge of the first compressor 101 again returns to the first compressor 101.In the first coolant loop
In 100, such as enclose the non-azeotrope mixing refrigerant (after, referred to as " refrigerant ") with 4 kinds of refrigerants described later.
In addition, oily delay portion of first coolant loop 100 in the first compressor 101 possesses oil cooler 101a,
Possesses pipe arrangement 103 between leading portion condenser 102 and oil cooler 101a, between back segment condenser 104 and current divider 107
Possess drying machine 106 (dehydrator), and possess between the suction side of the first compressor 101 and heat exchanger 109 slow
Rush device 112.
In addition, in the first coolant loop 100, in order to cool down leading portion condenser 102 and back segment condenser 104, it is provided with
First fan 105.First fan 105 is the air-supply arrangement of the propeller type with fan motor 105a.
First compressor 101 is compressed the refrigerant of suction and is discharged to leading portion condenser 102.
Leading portion condenser 102 is by such as copper or aluminum for making to radiate from the refrigerant that the first compressor 101 is discharged
Pipe wriggle and form.
Back segment condenser 104 is by such as copper or aluminium for making further to radiate from the refrigerant that leading portion condenser 102 exports
The pipe of system, which wriggles, to be formed.
These leading portion condensers 102 and back segment condenser 104 are integrally formed in identical tube sheet.
The coolant distribution exported from back segment condenser 104 is the refrigerant of liquid phase and the refrigerant of gas phase by current divider 107, makes liquid
After the refrigerant of phase is depressurized via pressure reducer (capillary) 108, it is evaporated by the outboard tube 109a of heat exchanger 109.
Heat exchanger 109 is the dual pipe of such as copper or aluminum with outboard tube 109a and inside tube 109b, inside
The gas phase refrigerant from current divider 107 is flowed in side pipe 109b, liquid phase refrigerant evaporation is so as to inside tube in outer side pipe 109a
The gas phase refrigerant flowed in 109b is cooled down.
Pressure reducer 110 is to be depressurized to being cooled in the inside tube 109b of heat exchanger 109 as the refrigerant of liquid phase
And it is output to such as capillary of the first evaporator 111.
First evaporator 111 is the pipe for making such as copper or aluminum of the refrigerant evaporation after being depressurized by pressure reducer 110, such as
It is upper described, for example it is stuck in a manner of the outer surface in addition to upper surface open for interior case 7 is thermally contacted.Separately
Outside, the installation of first evaporator 111 is not limited to this, as long as the structure thermally contacted.
Cooling effect when refrigerant is by being evaporated (gasification) by the first evaporator 111 is cold so as to be carried out in interior case 7
But.The evaporation and compressor 101 is inhaled into together with the refrigerant in the front evaporator of heat exchanger 109 as the refrigerant of gas phase
In.
In addition, pipe arrangement 103 is arranged on the inner side of peripheral part of the upper surface open of outer container 6.The week of the upper surface open
The part that part is the seal contiguity (not shown) that insulated door 13 is installed in the state of foregoing insulated door 13 is closed is enclosed,
Because the refrigerant for the high temperature that flowing is discharged from compressor 101 in pipe arrangement 103, by being heated by the refrigerant, so that
Prevent the condensation caused by the cooling of 7 side of interior case from low temperature.Thus, the air-tightness in outer container 6 improves.It is in addition, dry
Machine 106 removes the moisture included in refrigerant.In addition, buffer 112 has capillary 112a and expansion drum 112b, by by
The refrigerant of the gas phase of the suction side of one compressor 101 is contained in expansion drum 112b via capillary 112a, so as to suitably tie up
Hold the amount of the refrigerant circulated in the first coolant loop 100.
<<<Second coolant loop>>>
Second coolant loop 200 with it is foregoing in the same manner as, it is cold to possess the second compressor 201, leading portion condenser 202 and back segment
Condenser 204, the current divider 207 that gas-liquid is separated, pressure reducer 208 and heat exchanger 209 and pressure reducer 210 and second steam
Device 211 is sent out, and is configured to ring-type so that the refrigerant from the discharge of the second compressor 201 again returns to the second compressor 201.
In two coolant loops 200, enclose and foregoing same refrigerant.In addition, second coolant loop 200 with it is foregoing in the same manner as, possess
Oil cooler 201a, pipe arrangement 203, drying machine 206 and buffer 212.Here, heat exchanger 209 have outboard tube 209a and
Inside tube 209b.In addition, buffer 212 has capillary 212a and expansion drum 212b.
In addition, in the second coolant loop 200, it is provided with to cool down leading portion condenser 202 and back segment condenser 204
Second fan 205.Second fan 205 is the air-supply arrangement of the propeller type with fan motor 205a.
In addition, foregoing pipe arrangement 103 and pipe arrangement 203, such as overlap the to each other the upper surface open for being arranged on outer container 6
The inner side of peripheral part.In addition, foregoing the first evaporator 111 and the second evaporator 211, for example, do not overlap each other and with pin
The mode that the outer surface in addition to upper surface open of internal case 7 is thermally contacted for example is stuck.
<<<Refrigerant>>>
The refrigerant of present embodiment, the non-azeotrope mixing refrigerant e.g. with R245fa, R600, R23 and R14.
This, R245fa refers to pentafluoropropane (CHF2CH2CF3), its boiling point is+15.3 DEG C.R600 refers to normal butane (n-C4H10), it is boiled
Point is -0.5 DEG C.R23 refers to fluoroform (CHF3), its boiling point is -82.1 DEG C.R14 refers to tetrafluoromethane (CF4), its boiling point
For -127.9 DEG C.
In addition, the boiling point (evaporating temperature) of R600 is higher, easily containing oil, water etc..In addition, R245fa be used for by with
Mixed to fixed-ratio (such as R245fa is 7: 3 with R600) with flammable R600 so that it becomes non-flammable cold
Matchmaker.
In the first coolant loop 100, by 101 compressed refrigerant of the first compressor leading portion condenser 102 and after
Radiate and condensed as after liquid phase in section condenser 104, dewatered processing is implemented by drying machine 106, then by shunting
Device 107 split into liquid condition refrigerant (mainly boiling point higher R245fa, R600) and gaseous state refrigerant (R23,
R14).In addition, in the present embodiment, the refrigerant to be radiated in leading portion condenser 102 is right in oil cooler 101a
After oil in first compressor 101 is cooled down, radiate again in back segment condenser 104.
After the refrigerant (mainly R245fa, R600) of the liquid condition distributed is depressurized in pressure reducer 108, handed in heat
It is evaporated in the outboard tube 109a of parallel operation 109.
The refrigerant (R23, R14) of the gaseous state distributed is foregoing when by the inside tube 109b of heat exchanger 109
Outboard tube 109a in the heat of gasification of refrigerant (R245fa, R600) that evaporates and the gas as the return from the first evaporator 111
The refrigerant (R23, R14) of phase is cooled down and condensed, and becomes liquid condition.At this time, in the first evaporator 111 unevaporated refrigerant into
Row evaporation.
In addition, it is also above same for the second coolant loop 200.
In addition, as described above, the boiling point of R245fa is substantially 15 DEG C, the boiling point of R600 is substantially 0 DEG C, and the boiling point of R23 is
Substantially -82 DEG C, the boiling point of R14 is substantially -128 DEG C, therefore is led in the first coolant loop 100 and the second coolant loop 200
The evaporation of R600 crossed among non-azeotrope mixing refrigerant cools down R23 and R14, and by as the R23 of liquid phase,
R14 is guided to the first evaporator 111 and the second evaporator 211 to make its evaporation, thus, it is possible to which cooling object is cooled to example
Such as temperature suitable with the boiling point of R23 and R14 (such as substantially -82 DEG C to -128 DEG C).In addition, the first evaporator 111 and
The refrigerant that do not evaporate in second evaporator 211 is evaporated in heat exchanger 109,209.
As described so, the ultra low temperature freezer 1 involved by present embodiment is by the internal cooling of storage room 4 to given temperature
(such as less than -80 DEG C) ultralow temperature below.
Moreover, as described above, the ultra low temperature freezer 1 involved by present embodiment is by the front side adiabatic wall 2A's of insulated cabinet 2
Thickness is formed as thinner than the thickness of rear side adiabatic wall 2B, right side adiabatic wall 2C and left side adiabatic wall 2D.
Mode in this way, so that when picking and placeing storage shelf 50 to storage room 4, operating personnel can be relatively close to certainly
The handling of storage shelf 50 is carried out at the position of oneself standing place.Therefore, it is possible to make storage shelf 50 become to picking and placeing for storage room 4
Easily.
It can also it is enough than carrying out the picking and placeing to storage room 4 of storage shelf 50 in the short period, it is necessary so as to shorten
Open the time of insulated door 13.It is thus possible to the temperature enough suppressed in storage room 4 rises.
In addition, therefore the handling of storage shelf 50 can be being carried out at the position of the standing place of operating personnel,
So as to picking and placeing operation with what uncomfortable few posture carried out storage shelf 50, additionally it is possible to improve the security of operation.
In addition, the ultra low temperature freezer 1 involved by present embodiment is filled with heat-insulating material 9 between interior case 7 and outer container 6,
And only on rear side of the thickness ratio in adiabatic wall 2B, right side adiabatic wall 2C and the thin front side adiabatic wall 2A of left side adiabatic wall 2D,
Vacuum heat-insulating plate 12 is installed between interior case 7 and outer container 6.
Mode in this way, so that even in compared with rear side adiabatic wall 2B, right side adiabatic wall 2C, left side adiabatic wall 2D
By the thickness of front side adiabatic wall 2A formed it is relatively thin in the case of, can also ensure that with rear side adiabatic wall 2B, right side adiabatic wall 2C,
Heat-insulating property equal left side adiabatic wall 2D.It is thus possible to enough suppress will to be cooled to below given temperature in storage room 4 (such as-
Less than 80 DEG C) needed for power consumption.
Further, since be configured to only set relatively thin by the thickness of front side adiabatic wall 2A, and rear side adiabatic wall 2B, right side are exhausted
Hot wall 2C, left side adiabatic wall 2D thickness ratio on front side of adiabatic wall 2A it is thick, institute by the intensity of insulated cabinet 2 so as to decline suppression most
Small limit.It is thus possible to enough maintain the reliabilities such as the fault-resistant of ultra low temperature freezer 1, durability.
In addition, the ultra low temperature freezer 1 involved by present embodiment is installed as making heat-insulating material 9 be situated between in the adiabatic wall 2A of front side
Between the vacuum heat-insulating plate 12 and interior case 7.
Mode in this way, is drawn so as to suppress to be cooled to the interior case 6 of the inside equal extent of storage room 4
The Wen Duxiajiang of the vacuum heat-insulating plate 12 risen, can prevent from cracking in vacuum heat-insulating plate 12, rupture, breakage etc. is destroyed and led
The situation for causing heat-insulating property to decline.It can also enough maintain the reliabilities such as the fault-resistant of ultra low temperature freezer 1, durability.
In addition, the above embodiment is to be used to make the present invention readily comprehensible, and it is not intended to limit the invention
Explain.The present invention with can not departing from its purport make a change, improvement etc., it is of the invention in addition also to include its equivalent.
Description of reference numerals
1 ultra low temperature freezer
2 insulated cabinets
Adiabatic wall on front side of 2A
Adiabatic wall on rear side of 2B
Adiabatic wall on the right side of 2C
Adiabatic wall on the left of 2D
2E thermal insulation bottom
3 Machine Rooms
3A front surface panels
3B side surfaces plate
3C ventilation slits
3D rear surface plates
4 storage rooms
6 outer containers
6A antethecas
6B rear walls
6C side walls
6D rear covers
Case in 7
8 breakers
9 heat-insulating materials
12 vacuum heat-insulating plates
13 insulated doors
14 pivot members
15 inner covers
15A inner covers A
15B inner covers B
16 handle portions
21 operation panels
50 storage shelfs
51 magazines
52 handles
100 first coolant loops
101 first compressors
101a oil coolers
102nd, 202 leading portion condenser
103rd, 203 pipe arrangement
104th, 204 back segment condenser
105 first fans
105a, 205a fan motor
106th, 206 drying machine
107th, 207 current divider
108th, 110,208,210 pressure reducer
109th, 209 heat exchanger
109a, 209a outboard tube
109b, 209b inside tube
111 first evaporators
112nd, 212 buffer
112a, 212a capillary
112b, 212b expansion drum
150 coolant loops
200 second coolant loops
201 second compressors
205 second fans
211 second evaporators.
Claims (5)
1. a kind of ultra low temperature freezer, possesses：
Insulated cabinet, it, which is divided in upper surface, has the storage room of opening；With
Insulated door, the opening, which can be opened and closed, in it makes it possible to face the storage from the front-surface side of the insulated cabinet
Room,
The both side surface of insulated cabinet described in the thickness ratio of the front surface of the insulated cabinet and the thickness of rear surface are thin.
2. ultra low temperature freezer according to claim 1, the insulated cabinet has：
The interior case of upper surface open；
Outer container, it is surrounded around the interior case；
Heat-insulating material, it is filled between the interior case and the outer container；With
Vacuum heat-insulating plate, it is installed between the interior case and the outer container,
The vacuum heat-insulating plate is installed only at the front surface of the insulated cabinet.
3. ultra low temperature freezer according to claim 2, the vacuum insulation is installed in the front surface of the insulated cabinet
Plate so that the heat-insulating material is between the vacuum heat-insulating plate and the interior case.
4. the ultra low temperature freezer according to any one of claims 1 to 3, the thickness of the front surface is the rear surface
Thickness more than 1/4 and less than 2/3.
5. ultra low temperature freezer according to claim 4, the thickness of the front surface for the thickness of the rear surface 1/2 with
Under.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-167042 | 2015-08-26 | ||
| JP2015167042 | 2015-08-26 | ||
| PCT/JP2016/072588 WO2017033679A1 (en) | 2015-08-26 | 2016-08-02 | Ultra-low temperature freezer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107923696A true CN107923696A (en) | 2018-04-17 |
Family
ID=58100056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680046753.3A Pending CN107923696A (en) | 2015-08-26 | 2016-08-02 | Ultra low temperature freezer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180180344A1 (en) |
| EP (1) | EP3318827B1 (en) |
| JP (1) | JP6437660B2 (en) |
| CN (1) | CN107923696A (en) |
| WO (1) | WO2017033679A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11079163B2 (en) * | 2018-06-27 | 2021-08-03 | Standex International Corporation | Method for controlling defrost in refrigeration systems |
| US11434677B2 (en) * | 2019-07-24 | 2022-09-06 | Haier Us Appliance Solutions, Inc. | Freezer with releasable door hinges |
| USD947257S1 (en) * | 2019-10-11 | 2022-03-29 | Hefei Hualing Co., Ltd. | Refrigerator |
| DE102022125137A1 (en) | 2022-09-29 | 2024-04-04 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigerator and/or freezer |
| DE102022125163A1 (en) | 2022-09-29 | 2024-04-04 | Karlsruher lnstitut für Technologie, Körperschaft des öffentlichen Rechts | Freezer |
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- 2016-08-02 CN CN201680046753.3A patent/CN107923696A/en active Pending
- 2016-08-02 EP EP16839026.8A patent/EP3318827B1/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3318827A1 (en) | 2018-05-09 |
| JP6437660B2 (en) | 2018-12-12 |
| US20180180344A1 (en) | 2018-06-28 |
| EP3318827A4 (en) | 2018-07-25 |
| WO2017033679A1 (en) | 2017-03-02 |
| EP3318827B1 (en) | 2019-07-10 |
| JPWO2017033679A1 (en) | 2018-04-26 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Tokyo, Japan Applicant after: Pu Hei holding company Address before: Tokyo, Japan Applicant before: Panasonic's health medical treatment is controlled interest Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180417 |