CN110249192A - Freezer - Google Patents
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- Publication number
- CN110249192A CN110249192A CN201880010170.4A CN201880010170A CN110249192A CN 110249192 A CN110249192 A CN 110249192A CN 201880010170 A CN201880010170 A CN 201880010170A CN 110249192 A CN110249192 A CN 110249192A
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- China
- Prior art keywords
- evaporator
- freezer
- condenser
- compressor
- heating path
- 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.)
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- 239000003507 refrigerant Substances 0.000 claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 238000010257 thawing Methods 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims description 27
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 20
- 230000008014 freezing Effects 0.000 description 31
- 238000007710 freezing Methods 0.000 description 31
- 238000005192 partition Methods 0.000 description 8
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- 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
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Freezer includes the refrigeration cycle at least with compressor (19), evaporator (20), auxiliary cooler (46), backing condenser (21), rear class condenser (41), heating path (43).In addition, freezer has the flow channel switching valve (40) connecting with the downstream side of backing condenser (21).The flow path of refrigerant is switched to rear class condenser (41) and heating path (43) by flow channel switching valve (40).Freezer is configured to, when defrosting to evaporator (20), by the way that the flow path of refrigerant is switched to heating path (43), high-pressure refrigerant is supplied to heating path (43), it is heated to the evaporator (20) of heating path (43) thermal, and evaporates the refrigerant to have radiated in heating path (43) using the auxiliary cooler (46) connecting with the downstream side of heating path (43).
Description
Technical field
The present invention relates to the freezers for the output for cutting down defrosting electric heater.
Background technique
From the viewpoint of energy conservation, in home-use freezer, there is a kind of freezer, cut while making compressor operation
The flow path for changing refrigeration cycle is heated and high-pressure refrigerant is supplied to evaporator, to cut down defrosting electric heater
Output.
Hereinafter, being explained with reference to existing freezer.
Fig. 4 is the longitudinal section of existing freezer, and Fig. 5 is the refrigeration cycle structure figure of existing freezer and Fig. 6 is table
Show the figure of the operating control when defrosting of existing freezer.
As shown in figure 4, existing freezer 51 has partition wall 52, freezing chamber 53 and refrigerating chamber 54.Forming freezing chamber
Cooler room 56 is provided between the freezing chamber bottom surface 55 and partition wall 52 of 53 bottom surface.Main evaporation is configured in cooler room 56
Device 57.In freezer 51, cooling fan 58 is driven, the cold air generated in main evaporator 57 is supplied to freezing chamber 53, and
Refrigerating chamber 54 is intermittently supplied to via pipeline 59 and air door 60.In addition, as shown in figure 5, as constitute refrigeration cycle component,
Freezer 51 has compressor 61, condenser 62, auxiliary cooler 63, two-port valve 64, triple valve 65, capillary 66, capillary
67, capillary 68, capillary 69, drier 70 and defrosting piping 71.Herein, defrosting piping 71 and 57 thermal of main evaporator,
It is the refrigerant piping used when defrosting to main evaporator 57.Defrosting piping 71 makes independently of when carrying out cooling operating
Refrigerant piping in main evaporator 57.
About existing freezer 51 as constructed as above, illustrate its movement below.
In freezer 51, the flow path of valve 65 is switchinged three-way on one side operate compressor 61 while, by will be by compressor 61
The high-pressure refrigerant having compressed supplies to carry out cooling operating to condenser 62.The refrigerant to have radiated in condenser 62 is by drying
After device 70 is dry, depressurized by capillary 69 and capillary 68, and be fed into main evaporator 57 and after evaporating, to compressor 61
Reflux.At this point, two-port valve 64 can be closed and supply whole refrigerants to main evaporator 57.Alternatively, two-port valve can be opened
64 and to both main evaporator 57 and auxiliary evaporator 63 distribution refrigerant.Thereby, it is possible to adjust refrigeration energy when cooling operating
Power.
Then, referring to Fig. 6, illustrate the operating control when defrosting of existing freezer 51.
In Fig. 6, the state " opening " of two-port valve 64 refers to opening from capillary 69 to the flow path of capillary 66.Two-port valve 64
State " closing " refer to closing from capillary 69 to the flow path of capillary 66.In addition, the state " defrosting " of triple valve 65 refers to
Closing is opened from compressor 61 to the flow path of condenser 62 from compressor 61 to the flow path of defrosting piping 71.Triple valve 65
State " cooling ", which refers to, to be opened from compressor 61 to the flow path of condenser 62, and is closed from compressor 61 to the stream of defrosting piping 71
Road.
Section p in Fig. 6 carries out refrigerant in the cooling operating of both main evaporator 57 and auxiliary evaporator 63 flowing.
Section q carries out the cooling operating that refrigerant is only flowed in main evaporator 57.When the accumulated running time of compressor 61 reaches regulation
When the time, the defrosting for being transferred to the heating of the frosting to main evaporator 57 and melting it is operated.In the r of section, switching three-way valve 65
Flow path, to defrosting piping 71 supply by the compressed high-pressure refrigerant of compressor 61.At this point, main evaporator 57 is heated, and
And the refrigerant to have radiated in main evaporator 57 is depressurized by capillary 67, and be fed into auxiliary evaporator 63 and after evaporating,
It flows back to compressor 61.In addition, being able to use electric heater auxiliary main evaporator 57 (not shown) when carrying out defrosting operating
Heating.After the completion of the defrosting of main evaporator 57, the flow path of switching three-way valve 65 will be by the compressed high-pressure refrigerant of compressor 61
It is supplied to condenser 62, thus restarts cooling operating.Section s in Fig. 6 carries out refrigerant and only flows in main evaporator 57
Cooling operating.Section t carries out refrigerant in the cooling operating of both main evaporator 57 and auxiliary evaporator 63 flowing.
By movement described above, main evaporator 57 is heated using the high-pressure refrigerant of refrigeration cycle, thus, it is possible to
The electricity for cutting down Defrost heater, can be realized the energy-saving of freezer 51.
In turn, when the high-pressure refrigerant using refrigeration cycle is to heat main evaporator 57, auxiliary evaporator 63 is supplied
Refrigerant, thus, it is possible to the heatings of freezing-inhibiting room 53.
But in structure as existing freezer 51, use three be set between compressor 61 and condenser 62
Port valve 65 switches cooling operating and defrosting operating.Therefore, the refrigerant flow rates by triple valve 65 are fast, become generation refrigerant
The reason of flowing sound.This is because efficiently being carried out when carrying out defrosting operating using the condensation latent heat of high-pressure refrigerant
Heating, thus the upstream side of condenser 62 be provided with triple valve 65 as a result, when not only defrosting operating, even if being transported cooling
When turning, low density superheated vapor is also by triple valve 65.In addition, after switching to defrosting operating from cooling operating, in condenser
62 delays have a large amount of liquid refrigerant.Therefore, defrost operating starting it is slow, sufficient heating efficiency cannot be obtained, and produce
The pressure in the downstream side of raw triple valve 65 is higher than the back pressure of the pressure of upstream side, becomes the main of the durability reduction of triple valve 65
Reason.
Therefore, it when carrying out defrosting operating, is efficiently heated using the condensation latent heat of high-pressure refrigerant, and press down
System inhibits the generation of refrigerant flowing sound by the refrigerant flow rates of triple valve 65, and rapidly from cooling operating to removing
The switching of frost operating, this becomes problem.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Application 58-024774 bulletin
Summary of the invention
The present invention provides a kind of freezer, is to complete in view of existing project as described above, inhibits refrigerant on one side
Efficient defrosting operating is realized in the generation of flowing sound on one side.
Specifically, freezer in an example of embodiments of the present invention includes at least having compressor, evaporator, auxiliary
Help the refrigeration cycle of cooler, backing condenser, rear class condenser and heating path.In addition, the one of embodiments of the present invention
Freezer in example has the flow channel switching valve connecting with the downstream side of backing condenser.Flow channel switching valve will be condensed from prime
The heating path that the flow path of the high-pressure refrigerant of device switches to rear class condenser and is connected in parallel with rear class condenser.Evaporator with
Heating path thermal.Freezer in an example of embodiments of the present invention is configured to, when defrosting to evaporator, benefit
The flow path of high-pressure refrigerant is switched to heating path with flow channel switching valve, it will be by coming from backing condenser after compressor compresses
High-pressure refrigerant be supplied to heating path and carry out heating evaporation device, and it is cold using the auxiliary being connect with the downstream side of heating path
But device makes the refrigerant evaporation after radiating in heating path.
Utilize such structure, carry out defrosting operating when, can using high-pressure refrigerant condensation latent heat efficiently into
Row heating, and it is able to suppress the generation for inhibiting refrigerant to flow sound by the refrigerant flow rates of individual path.In turn, sharp
With such structure, can quickly carry out from cooling operating to the switching of defrosting operating.It utilizes such structure as a result, it can
Realize the energy-saving of freezer.
In addition, the freezer in an example of embodiments of the present invention also can have a part and pressure of heating path
The heat exchange department of contracting machine thermal.In addition, the freezer in an example of embodiments of the present invention is also configured to, work as flow path
Switching valve utilizes the waste heat evaporator of compressor when heating path side opens and defrosts to evaporator.
It utilizes such structure, when carrying out defrosting operating, the enthalpy of high-pressure refrigerant can be made using the waste heat of compressor
Increase, and then is efficiently heated, and can be realized the energy-saving of freezer.
In addition, the freezer in an example of embodiments of the present invention is also configured to, defrost to evaporator
It carries out cooling operating in advance before, compressor is not made stoppingly to utilize flow channel switching valve that the flow path of high-pressure refrigerant is cold from rear class
Condenser switches to heating path, thus defrosts to evaporator.
It utilizes such structure, is able to suppress the rising of the storehouse temperature in defrosting, and in the cooling fortune implemented in advance
Increase the temperature of compressor in turning, thus, it is possible to improve the heat exchanger effectiveness with compressor.
Detailed description of the invention
Fig. 1 is the longitudinal section of the freezer of an example of embodiments of the present invention.
Fig. 2 is the loop structure figure of the freezer of an example of embodiments of the present invention.
The figure of control when Fig. 3 is the freezer defrosting of an example for indicating embodiments of the present invention.
Fig. 4 is the longitudinal section of existing freezer.
Fig. 5 is the loop structure figure of existing freezer.
Fig. 6 is the figure for indicating the movement of flow channel switching valve of existing freezer.
Specific embodiment
Hereinafter, being illustrated referring to example of the attached drawing to embodiment of the present disclosure.In addition, the disclosure be not limited to it is following
Embodiment.
(embodiment)
Fig. 1 is the longitudinal section of the freezer of an example of embodiments of the present invention.Fig. 2 is to indicate embodiment party of the invention
The figure of the loop structure of the freezer of an example of formula.When Fig. 3 is the freezer defrosting of an example for indicating embodiments of the present invention
Control figure.
As depicted in figs. 1 and 2, freezer 11 have shell 12, door 13, support housing 12 foot 14, be set to shell 12
Lower part lower mechanical room 15, be set to shell 12 top top Machine Room 16, be configured at shell 12 top it is cold
It hides room 17 and is configured at the freezing chamber 18 of the lower part of shell 12.In addition, freezer 11 has as the component for constituting refrigeration cycle
Have the compressor for being accommodated in top Machine Room 16 19, the back side for being accommodated in freezing chamber 18 evaporator 20 and be accommodated in lower part
Backing condenser 21 in Machine Room 15.In addition, freezer 11 has partition wall 22 that lower mechanical room 15 separates, is installed on
24 and of evaporating pan that air-cooled fan 23, the downwind side for being set to partition wall 22 are carried out to backing condenser 21 of partition wall 22
The bottom plate 25 of lower mechanical room 15.
Herein, compressor 19 is speed changeable compressor, is configured to turn using 6 stages selected from 20~80rps
Speed.This is because avoiding the resonance of piping etc. on one side, the revolving speed of compressor 19 is switched to 6 ranks of low speed~high speed on one side
Section adjusts refrigerating capacity.In addition, compressor 19 is configured to, when starting, is at low speed, with for cool down refrigerating chamber 17 or
The duration of runs of person's freezing chamber 18 is elongated and speedup.This is because mainly use peak efficiency low speed, and for height outside
The load of refrigerating chamber 17 caused by air themperature and door opening and closing etc. or freezing chamber 18 increases, and is turned using appropriate relatively high
Speed.At this point, independently controlling the revolving speed of compressor 19 with the cooling operation mode of freezer 11.Furthermore it can also be by evaporation temperature
Revolving speed when the refrigeration refrigerating mode that degree is high, refrigerating capacity is bigger starts is set to lower than freezing refrigerating mode.Referred to as, it refrigerates
Library 11 is also configured to, and is reduced with the temperature of refrigerating chamber 17 or freezing chamber 18, so that compressor 19 is slowed down to adjust refrigeration
Ability.
In addition, having the discharge of the multiple air entries 26 for being set to bottom plate 25, the back side for being set to lower mechanical room 15
The communication air duct 28 of the outlet 27 and top Machine Room 16 of mouth 27 and connection lower mechanical room 15.Herein, lower mechanical room 15
Divided by partition wall 22 for Room 2, is configured with backing condenser 21 in the weather side of fan 23, is configured with evaporating pan 24 in downwind side.
In addition, freezer 11 has drier 38, flow channel switching valve 40, rear class condenser 41, throttling element 42, heating path
43, heat exchange department 44, heated side throttling element 45, auxiliary cooler 46 and heated side suction line 47, as composition refrigeration cycle
Component.Drier 38 is located at the downstream side of backing condenser 21, keeps the refrigerant recycled dry.Flow channel switching valve 40 is located at
The downstream side of drier 38 controls the flowing of refrigerant.Rear class condenser 41 is located at the downstream side of flow channel switching valve 40, with freezing
The outer surface heat of the shell 12 on the opening portion periphery of room 18 combines.Rear class condenser 41 is connect by throttling element 42 with evaporator 20.
Heating path 43 and rear class condenser 41 are connected in parallel in the downstream side of flow channel switching valve 40.Heat exchange department 44 is in heating path 43
Path in 19 thermal of compressor.Heated side throttling element 45, auxiliary cooler 46 and heated side suction line 47 and heating road
The downstream side of diameter 43 connects.Herein, a part and steaming between the heat exchange department 44 and heated side throttling element 45 of heating path 43
Send out 20 thermal of device.In addition, a part between the heat exchange department 44 and heated side throttling element 45 of heating path 43, independently of from
Throttling element 42 supplies the refrigerant piping of refrigerant to evaporator 20.In addition, the refrigeration supplied from throttling element 42 to evaporator 20
Agent flows back via suction line 48 to compressor 19, on the other hand, the system supplied from heated side throttling element 45 to auxiliary cooler 46
Cryogen flows back via heated side suction line 47 to compressor 19.
In addition, flow channel switching valve 40 can be to rear class condenser 41 and the respectively individually flowing of refrigerant of heating path 43
Control is opened and closed.In general, flow channel switching valve 40 will be maintained open from backing condenser 21 to the flow path of rear class condenser 41
State will be maintained the state closed from backing condenser 21 to the flow path of heating path 43.Flow channel switching valve 40 is only said below
The opening and closing of flow path is carried out when bright defrosting.
In addition, as shown in Figure 1, freezer 11 has the cool-air feed that will be generated by evaporator 20 to refrigerating chamber 17 and freezes
The evaporator fan 30 of room 18, by the cold air supplied to freezing chamber 18 cutting freezer damper 31, will be supplied to refrigerating chamber 17
Cold air cutting refrigerator damper 32 and pipeline 33 to 17 cool-air feed of refrigerating chamber.In addition, freezer 11 has detection cold
Freeze the freezer temperature sensor 34 of the temperature of room 18, the refrigerator temperature sensor 35 for the temperature for detecting refrigerating chamber 17 and inspection
Survey the defrosting temperature sensor 36 of the temperature of evaporator 20.Herein, pipeline 33 is adjacent with top Machine Room 16 along refrigerating chamber 17
Wall surface formed.It is nearby discharged by a part of the cold air of pipeline 33 from the center of refrigerating chamber 17.Pass through the cold air of pipeline 33
After passing through while cool down the adjacent wall surface in top Machine Room 16 mostly, from the discharge of the top of refrigerating chamber 17.
About the freezer 11 of the present embodiment constituted as described above, illustrate its movement below, for conventional example
Identical structure adds same symbol, and description is omitted.
(movement is known as below in the cooling halted state that fan 23, compressor 19 and evaporator fan 30 all stop
" OFF mode ") under, the temperature that freezer temperature sensor 34 detects rises to the FCC_ON temperature or refrigerating chamber of specified value
When the temperature that temperature sensor 35 detects rises to the PCC_ON temperature of specified value, the state for closing freezer damper 31 makes
Refrigerator damper 32 is closed state, which (is known as " refrigeration below by driving compressor 19, fan 23 and evaporator fan 30
Refrigerating mode ").
It refrigerates in refrigerating mode, by the driving of fan 23, the prime of the lower mechanical room 15 separated by partition wall 22 is cold
21 side of condenser becomes negative pressure and attracts external air from multiple air entries 26, and 24 side of evaporating pan becomes positive pressure, lower mechanical room
Air in 15 is discharged from multiple outlets 27 to outside.
On the other hand, the refrigerant being discharged from compressor 19 carries out heat exchange in backing condenser 21 and outside air on one side
After remaining a part of gas on one side and condensing, moisture is removed by drier 38, and via flow channel switching valve 40 to rear class condenser
41 supplies (referring to Fig. 2).The refrigerant for having passed through rear class condenser 41 vias shell while the opening portion of warm freezing chamber 18
Body 12 radiates after condensation, is depressurized by throttling element 42 and is evaporated by evaporator 20, is carried out on one side with air in the library of refrigerating chamber 17
Heat exchange cools down refrigerating chamber 17, flows back into compressor 19 as gas refrigerant via suction line 48 on one side.
It refrigerates in refrigerating mode, the temperature that freezer temperature sensor 34 detects drops to the FCC_OFF temperature of specified value
Degree, and the temperature that refrigerator temperature sensor 35 detects shifts as OFF mould when dropping to the PCC_OFF temperature of specified value
Formula.
In addition, indicating FCC_ of the temperature than specified value of the detection of freezer temperature sensor 34 in refrigeration refrigerating mode
The high temperature of OFF temperature, and the temperature that refrigerator temperature sensor 35 detects is when dropping to the PCC_OFF temperature of specified value,
The state for opening freezer damper 31, the state for closing refrigerator damper 32, driving compressor 19, fan 23 and evaporator
Fan 30.Hereinafter, by driving refrigeration cycle in the same manner as refrigeration refrigerating mode, air and evaporator 20 in the library of freezing chamber 18
It carries out heat exchange and cools down freezing chamber 18 (hereinafter, the movement is known as " freezing refrigerating mode ").
It freezes in refrigerating mode, the temperature that freezer temperature sensor 34 detects drops to the FCC_OFF temperature of specified value
When the temperature spent, and indicate that refrigerator temperature sensor 35 detects is the PCC_ON temperature of specified value or more, it is transferred to refrigeration
Refrigerating mode.
In addition, the temperature that freezer temperature sensor 34 detects drops to the FCC_ of specified value in freezing refrigerating mode
OFF temperature, and indicate refrigerator temperature sensor 35 detect temperature be lower than specified value PCC_ON temperature when, be transferred to
OFF mode.
Herein, illustrate the control when defrosting of the freezer 11 of present embodiment.
In Fig. 3, the state " opening and closing " of flow channel switching valve 40 refers to opening from backing condenser 21 to rear class condenser 41
Flow path is closed from backing condenser 21 to the flow path of heating path 43.In addition, the state " make and break " of flow channel switching valve 40 refers to envelope
It closes from backing condenser 21 to the flow path of rear class condenser 41, and opens from backing condenser 21 to the flow path of heating path 43.
The state " closing " of flow channel switching valve 40 refers to, closes from backing condenser 21 to the flow path of rear class condenser 41, and close
From backing condenser 21 to the flow path of heating path 43.
When the accumulated running time of compressor 19 reaches the stipulated time, the frosting for being transferred to heating evaporation device 20 melts it
Defrosting mode.In the section a of defrosting mode, firstly, the temperature for freezing-inhibiting room 18 rises, it is same with freezing refrigerating mode
It is cooling sample to be carried out to freezing chamber 18 stipulated time.Then, in the b of section, by cutting flow path while operating compressor 19
It changes that valve 40 is fully closed, will all be closed from backing condenser 21 to the flow path of rear class condenser 41 and heating path 43, after being stranded in
Grade condenser 41, evaporator 20 and heating path 43 refrigerant-recovery to backing condenser 21.
In the c of section, switch flow channel switching valve 40 while continuing the operating of compressor 19, from backing condenser 21 to adding
The flow path of hot path 43 is opened, and is thus fed into steaming via the high-pressure refrigerant that heating path 43 is recovered to backing condenser 21
Send out device 20.At this point, compressor 19 in the 44 mesohigh refrigerant of heat exchange department for being set to heating path 43 is operated is useless
Heat heating, and aridity increases.Therefore, steaming is not just fed by the heating of heat exchange department 44 with section c mesohigh refrigerant
It is compared in the case where hair device 20, the high-pressure refrigerant that enthalpy can be made to increase and evaporator 20 carry out heat exchange, can be to evaporation
Device 20 applies bigger heat.Moreover, the terminal and evaporator 20 in heating path 43 carry out heat exchange and the system that has been condensed
After cryogen is depressurized by heated side throttling element 45, evaporated in auxiliary cooler 46, and carried out on one side with air in the library of freezing chamber 18
Heat exchange cools down freezing chamber 18, flows back on one side as gas refrigerant to compressor 19 via heated side suction line 47.
Then, in the d of section, energization (not shown) to the Defrost heater for being installed on evaporator 20 is to terminate to defrost.Defrosting
End be to judge by the way that whether the temperature sensor 36 that defrosts reaches predetermined temperature.In the e of section, switch flow channel switching valve 40
Closing is opened from backing condenser 21 to the flow path of heating path 43 from backing condenser 21 to the stream of rear class condenser 41
Road, usually operating are restarted.
As described above, the freezer 11 of an example of embodiments of the present invention is configured to, in backing condenser 21 with after
Flow channel switching valve 40, the path branches for making the refrigerant of two-phase section be circulated are configured between grade condenser 41, and are allowed hand over cold
But operate and defrost operating.Through this structure, when carrying out defrosting operating, the condensation latent heat of high-pressure refrigerant can be utilized
It is efficiently heated, and is able to suppress through the refrigerant flow rates of individual path the production for inhibiting refrigerant flowing sound
It is raw.In addition, through this structure, can rapidly carry out from cooling operating to the switching of defrosting operating.
Furthermore in present embodiment, auxiliary cooler 46 illustrates the side with the direct heat exchange of air in freezing chamber 18
The cold-storage material with 46 thermal of auxiliary cooler also can be set in formula.It, will be in auxiliary cooler 46 as a result, when defrosting operating
After the cooling heat of generation is temporarily stored in cold-storage material, it can be used in the cooling of the air in freezing chamber 18, energy bit by bit
The surface area for enough making the air in auxiliary cooler 46 and freezing chamber 18 carry out heat exchange is small and realizes and minimizes.
In addition, the freezer 11 of present embodiment has the heat of a part of heating path 43 and 19 thermal of compressor
Exchange part 44.Through this structure, evaporator 20 is removed when opening flow channel switching valve 40 in heating path 43 side
When white, the aridity of a part of chilled high-pressure refrigerant in backing condenser 21 is improved using the waste heat of compressor 19
Afterwards, evaporator 20 is heated, thus increases the enthalpy of high-pressure refrigerant using the waste heat of compressor 19 when carrying out defrosting operating
Greatly, and then it can be carried out efficiently heating.Thereby, it is possible to realize the energy-saving of freezer.
In addition, in present embodiment, the refrigerant temperature of heat exchange department 44 and the refrigerant temperature of backing condenser 21 are
It is roughly the same, flow path resistance can also be set in than the heating path 43 on the upstream side of heat exchange department 44, make heat exchange department
Refrigerant temperature in 44 is lower than backing condenser 21.Thereby, it is possible to improve the heat exchanger effectiveness with compressor 19.
In addition, the freezer of present embodiment, carries out carrying out cooling operating in advance, pass through carrying out defrosting to evaporator 20
The stopping of compressor 19 is switched to just the flow path of high-pressure refrigerant from rear class condenser 41 using flow channel switching valve 40 to add
Hot path 43, to defrost to evaporator 20, thus, it is possible to inhibit the Ku Neiwen of refrigerating chamber 17 and freezing chamber 18 in defrosting
The rising of degree.In addition, by rising the temperature of compressor 19 in the cooling operating implemented in advance, can be improved and compressor
19 heat exchanger effectiveness.
In addition, the freezer 11 of present embodiment is configured to, in the defrosting operating of section c and section d, make evaporator wind
The cold air that fan 30 stops and is not frozen evaporator 20 in room 18 is cooling.It, can also but after switching to defrosting operating
During to drive the stipulated time, evaporator fan 30 is driven, makes the cold air と evaporator in refrigerating chamber 17 or freezing chamber 18
20 carry out heat exchange.After being switched to defrosting operating as a result, the refrigerant for being stored in rear class condenser 41 is supplied to evaporator 20,
Evaporator 20 is cooled, therefore by carrying out heat exchange to the cold air and evaporator 20 enable in refrigerating chamber 17 or freezing chamber 18
It is enough that evaporator 20 is heated.
Industrial utilizability
As described above, the present invention provides a kind of freezer, by utilizing the waste heat of compressor by the height in refrigeration cycle
Compression refrigerant is supplied and is heated to evaporator, and thus, it is possible to cut down the output of defrosting electric heater.Thereby, it is possible to be applicable in
In home-use and business freezer and other freezing and refrigeration application commodity etc..
Description of symbols
11 freezers
12 shells
13
14 feet
15 lower mechanical rooms
16 tops Machine Room
17 refrigerating chambers
18 freezing chambers
19 compressors
20 evaporators
21 backing condensers
22 partition walls
23 fans
24 evaporating pans
25 bottom plates
26 air entries
27 outlets
28 communication air ducts
30 evaporator fans
31 freezer dampers
32 refrigerator dampers
33 pipelines
34 freezer temperature sensors
35 refrigerator temperature sensors
36 defrosting temperature sensors
40 flow channel switching valves
41 rear class condensers
42 throttling elements
43 heating paths
44 heat exchange departments
45 heated side throttling elements
46 auxiliary coolers
47 heated side suction lines
48 suction lines.
Claims (3)
1. a kind of freezer, it is characterised in that:
Including the system at least with compressor, evaporator, auxiliary cooler, backing condenser, rear class condenser and heating path
SAPMAC method,
The freezer has flow channel switching valve, is connected to the downstream side of the backing condenser, will be cold from the prime
The high-pressure refrigerant of condenser is between the rear class condenser and the heating path being connected in parallel with the rear class condenser
Switch flow path,
The evaporator and the heating path thermal,
When defrosting to the evaporator, the flow channel switching valve is switched to the heating path, will be by the compressor
The compressed high-pressure refrigerant from the backing condenser is supplied to the heating path, to heat the evaporator,
Further, it is possible to which the auxiliary cooler using the downstream side for being connected to the heating path makes in the heating path
Refrigerant evaporation after heat dissipation.
2. freezer as described in claim 1, it is characterised in that:
With by the heat exchange department of a part of the heating path and compressor heat combination, which, which is configured to work as, makes
When the flow channel switching valve defrosts to the evaporator to heating path side opening, the waste heat using the compressor adds
The heat evaporator.
3. freezer as claimed in claim 2, it is characterised in that:
The freezer is configured to carry out cooling operating in advance until will defrost to the evaporator, and the flow path is cut
Changing valve not makes the compressor stoppingly be switched to the heating path from the rear class condenser, removes to the evaporator
Frost.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017020020 | 2017-02-07 | ||
| JP2017-020020 | 2017-02-07 | ||
| PCT/JP2018/002740 WO2018147113A1 (en) | 2017-02-07 | 2018-01-29 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110249192A true CN110249192A (en) | 2019-09-17 |
Family
ID=63108168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880010170.4A Pending CN110249192A (en) | 2017-02-07 | 2018-01-29 | Freezer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2018147113A1 (en) |
| CN (1) | CN110249192A (en) |
| WO (1) | WO2018147113A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7065279B2 (en) * | 2019-02-20 | 2022-05-12 | パナソニックＩｐマネジメント株式会社 | refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5356951U (en) * | 1976-10-18 | 1978-05-16 | ||
| JPS5414045A (en) * | 1977-07-01 | 1979-02-01 | Hitachi Ltd | Freezing refrigerator |
| JPS63169457A (en) * | 1987-01-07 | 1988-07-13 | 松下電器産業株式会社 | Heat pump type air conditioner |
| JP2001263883A (en) * | 2000-03-21 | 2001-09-26 | Fukushima Industries Corp | Hot gas defrosting type refrigerating/cold storage unit |
| JP2002181439A (en) * | 2000-12-11 | 2002-06-26 | Sanyo Electric Co Ltd | Cooler |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4218988Y1 (en) * | 1964-08-14 | 1967-11-02 | ||
| CH571086A5 (en) * | 1973-10-23 | 1975-12-31 | Sulzer Ag | |
| JPS5115840A (en) * | 1974-07-30 | 1976-02-07 | Sanyo Electric Co | JOSOSOCHI |
| JPS51139753A (en) * | 1975-05-29 | 1976-12-02 | Mitsubishi Electric Corp | Mic type osciliator |
| JPS5824774A (en) * | 1981-08-06 | 1983-02-14 | 三洋電機株式会社 | Refrigerator |
| JPH0296585A (en) * | 1988-10-01 | 1990-04-09 | Idemitsu Kosan Co Ltd | Novel ferrocene derivative, surfactant and production of organic thin film |
-
2018
- 2018-01-29 WO PCT/JP2018/002740 patent/WO2018147113A1/en active Application Filing
- 2018-01-29 CN CN201880010170.4A patent/CN110249192A/en active Pending
- 2018-01-29 JP JP2018567371A patent/JPWO2018147113A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5356951U (en) * | 1976-10-18 | 1978-05-16 | ||
| JPS5414045A (en) * | 1977-07-01 | 1979-02-01 | Hitachi Ltd | Freezing refrigerator |
| JPS63169457A (en) * | 1987-01-07 | 1988-07-13 | 松下電器産業株式会社 | Heat pump type air conditioner |
| JP2001263883A (en) * | 2000-03-21 | 2001-09-26 | Fukushima Industries Corp | Hot gas defrosting type refrigerating/cold storage unit |
| JP2002181439A (en) * | 2000-12-11 | 2002-06-26 | Sanyo Electric Co Ltd | Cooler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018147113A1 (en) | 2019-11-21 |
| WO2018147113A1 (en) | 2018-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190917 |