CN101151496A - Damper door control from adaptive defrost control - Google Patents
Damper door control from adaptive defrost control Download PDFInfo
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- CN101151496A CN101151496A CNA2006800087865A CN200680008786A CN101151496A CN 101151496 A CN101151496 A CN 101151496A CN A2006800087865 A CNA2006800087865 A CN A2006800087865A CN 200680008786 A CN200680008786 A CN 200680008786A CN 101151496 A CN101151496 A CN 101151496A
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Abstract
An adaptive defrost control method and device for controlling a damper door during a defrost cycle is provided. Before entering the defrost cycle, the adaptive defrost control logic determines if the damper door is open. If the damper door is open, the defrost cycle is suspended until the door is closed. If the damper door is closed, the adaptive defrost control logic activates a barrier between the damper door motor and a power supply so that the damper door may not be opened during the defrost cycle. After the defrost cycle is completed, the adaptive defrost control logic removes the barrier between the damper door motor and a power supply. The damper door may then be opened and closed as necessary. Accordingly, warm moist air from the defrost cycle does not enter the fresh food compartment.
Description
The cross reference of related application
Present patent application requires in the U.S. Provisional Patent Application No.60/666 of proposition on March 31st, 2005,682 priority, and its whole instructions and disclosure are in this combination as a reference.
Technical field
The present invention relates generally to refrigerator, relates in particular to the control of flow air between refrigerating chamber and fresh food compartment in the refrigerator.
Background technology
A lot of modern refrigeration units all comprise fresh food compartment, are used to store the food that is higher than cryogenic temperature.Fresh food compartment is isolated with main compartment that is used to store the food that is lower than cryogenic temperature or refrigerating chamber usually.Generally, the temperature of refrigeration and refrigerating chamber can be controlled respectively.In order to provide cooling to fresh food compartment, fresh food compartment typically is equipped with the active damping door by damper motor control.When damper door is opened, typically, evaporator fan is supplied to energy, moves on to fresh food compartment thereby will cool off air from refrigerating chamber inside.When damper door is closed, fresh food compartment and refrigerating chamber are isolated, and its temperature can change respectively with refrigerating chamber.
In typical refrigeration unit, fresh food compartment is equipped with the thermostat of oneself, thus the temperature of thermostatic control fresh food compartment.When this thermostat detected the fresh food compartment temperature above threshold value, indication cooling air must be introduced into fresh food compartment from refrigerating chamber.When thermostat detects this situation, thermostat changes state to arrive " heat " situation, transmits electric energy and give damper motor to open damper under this situation.When fresh food compartment cools down, thermostat changes state again to arrive " cold " situation, transmits electric energy and give damper motor with the close damper device under this situation.
Further the efficient of known typical refrigeration unit can improve by reducing frosting degree, and described frost accumulates on the interior heat exchanger of refrigerating chamber.Therefore, Xian Dai system self-defrosting type normally.For this reason, thus use special settle and the heater of control comes a little that reheat heat exchanger is melted the frost that gathers on the heat exchanger.These Defrost heaters are according to the algorithm of defrost cycle and configuration and controlled.Therefore, these two common circulations of refrigerator ice cabinet experience or patterns, cool cycles or pattern and defrost cycle or pattern.During cool cycles, compressor links to each other with line voltage, and compressor leaves circularly and close by thermostat, that is to say, that compressor in fact only becomes around is enough warm, just move when needing to cool off.During defrost cycle, compressor and line voltage disconnect, and Defrost heater links to each other with line voltage.After frost was melted, Defrost heater was closed by the temperature sensitive switch of proximity thermal interchanger, or opposite, is closed by programme-control.
Unfortunately, when refrigerating chamber was in defrost cycle, if fresh food compartment requires cooling, traditional refrigerator system can not stop damper door to be opened during defrost cycle.Thereby warm-humid air is allowed to flow to fresh food compartment by damper door duct.In the compartment of wanting to keep cold and fresh at food, do not wish to have warm-humid air.Therefore, there is a need in the art for and stop opening of damper door during the defrost cycle.
Summary of the invention
The invention provides a kind of self adaptation defrosting control method and device, be used for during defrost cycle, controlling damper door.Before entering defrost cycle, self adaptation defrosting control logic judges whether damper door is opened.If damper door is opened, then defrost cycle is suspended, up to the door closure.If the damper door closure, self adaptation defrosting control logic stops opening of damper door.
In one embodiment of the invention, system of the present invention starts ELECTRONIC COVER between damper door motor and power supply, thereby damper door can not be opened during defrost cycle.In one embodiment, barrier is a triac, and it is at main power source and be used to control between the thermostat of fresh food compartment temperature.In another embodiment of the present invention, barrier is a triac, and it is between main power source and damper door motor.After defrost cycle was finished, self adaptation defrosting control logic was removed barrier, to allow the operation of damper door motor.Damper door can be opened as required and be closed then.
By the detailed description below in conjunction with accompanying drawing, it is clearer that the purpose of others of the present invention and advantage will become.
Description of drawings
Be introduced into and form the accompanying drawing of a specification part, for example understand several aspects of the present invention, and combine, be used to explain principle of the present invention with description.In the accompanying drawings:
Fig. 1 is the schematic diagram according to refrigeration unit of the present invention;
Fig. 2 is according to one embodiment of present invention, is used to control the schematic diagram of the control loop of refrigeration unit;
Fig. 3 is according to a second embodiment of the present invention, is used to control the schematic diagram of the control loop of refrigeration unit; And
Fig. 4 is according to the present invention, and the flow chart of control logic method is described.
When describing in conjunction with a certain preferred embodiment when of the present invention, the present invention is not limited to these embodiment.On the contrary, it is intended that all Res fungibiles, modification and the equivalent that comprises in the spirit and scope of the present invention that limit as claim.
The specific embodiment
With reference to figure 1, major electrical components refrigeration unit 100, for example, the main electrical equipment of commercial or home refrigerator ice cabinet.Will prove absolutely that as following when refrigeration unit 100 carried out defrost cycle, the present invention stoped warm-humid air to enter fresh food compartment from refrigerating chamber.Like this, the food in the fresh food compartment can advantageously keep fresh state in long period of time.
Still with reference to figure 1, refrigeration unit 100 comprises first or main compartment, and for example refrigerating chamber 101, and second fresh food compartment 102.First and second compartments 101,102 are respectively by thermostatic control.Under thermostatic control, thereby open opening or passage between two compartments 101,102 by opening damper door 104, freezing and fresh food compartment 101,102 is coupled.When being driven by the damper door 104 that damper motor 105 moves or biased opening, air stream is allowed to pass through between two adjacent compartments 101,102.When damper door 104 is closed, air is prevented from or stops between two adjacent chamber 101,102 flowing.In other words, damper door 104 stops the air between the compartment 101,102 to flow, thus the temperature of control fresh food compartment 101.
Heat transmission between the air in cold-producing medium in evaporimeter 110 coil pipes and the refrigerating chamber 101 comprise fan 113 in the refrigeration unit 100 in order to help and to promote.Especially, evaporator fan 113 is arranged in the refrigerating chamber 101 with the indoor air of circulating frozen.Especially, evaporator fan 113 can produce cross evaporimeter 110 coil pipes and around it around air stream.This strand air stream of the coil pipe of process evaporimeter 110 has been strengthened from air in the refrigerating chamber 101 to the heat exchange of cold-producing medium.Like this, the cold-producing medium in the coil pipe can be with the heat extraction and with heat absorption from the air in the refrigerating chamber 101.
When fresh food compartment 102 warms, fresh food thermostat 108 detects higher temperature.When detected temperature met or exceeded high temperature limit, fresh food thermostat 108 closed thermostats 109 sent a signal to damper motor 105 to open damper door 104.Along with damper door 104 is opened, the cold air of the refrigerating chamber 101 into fresh food compartment 102 that enters or circulate.Becoming a mandarin from the cold air of refrigerating chamber 101 is lowered the temperature in the fresh food compartment 101, drops to or be lower than the temperature of the high temperature limit of fresh food thermostat 108 up to temperature.Under this temperature, fresh food thermostat 108 is opened thermostat 109, sends a signal to damper motor 105 with close damper door 104.
Can not reduce the effectiveness of cool cycles in order to ensure the frost that gathers on the condenser 112, refrigeration unit 100 further comprises Defrost heater 120.Defrost heater 120 is positioned at the position near evaporimeter 110, at the frost that melts during the defrost cycle on the evaporimeter.As known in the art, the operation of Defrost heater 120 is by unit 121 controls of self adaptation defrosting control logic.
As previously mentioned, in traditional refrigeration unit, during defrost cycle, damper door may be held to open or be allowed to and open, and therefore makes heat and moisture can enter fresh food compartment 102.In an embodiment of the present invention, during defrost cycle, damper door 104 is closed or is forced to remain closed.Like this, stop heat and moisture to enter fresh food compartment 102.As Fig. 2 major electrical components, control loop 200 is used for close damper door during defrost cycle.
With reference to figure 2, self adaptation defrost controller (ADC) 203 is coordinated the operation of compressor motor 205, condenser motor 206, Defrost heater 204 and triac 201.In illustrational embodiment, compressor motor 205 is connected between the terminal T6 and ground wire N of ADC 203, and when needs cooling refrigerating chamber, is started by ADC during cool cycles.Condenser motor 206 is connected between the terminal T7 and ground wire N of ADC 203, and is started by ADC during cool cycles.Evaporator fan motor 207 is connected between the terminal T8 and ground wire N of ADC 203, and is started by ADC during cool cycles.Heater 204 is connected on the terminal T4 of ADC 203, and is started by ADC during defrost cycle.Triac 201 is connected between the contact " a " of power line L1 and switch S 1 (for instance, for example the switch among Fig. 1 109), and by the control line on the terminal T3 that is connected to ADC, is started by ADC 203.Triac 201 is started by ADC 203 during defrost cycle, arrives the contact " a " of switch S 1 to stop electric current.The power line L1 that ADC 203 further is connected at terminal T1 and on the ground wire N of terminal T4.
Temperature in thermostat 106 detects refrigerating chamber 101 raises when surpassing required standard, and thermostat indication refrigeration unit 100 enters cool cycles.During cool cycles, thermostat 106 command switch S2 (for instance, for example the switch among Fig. 1 107) closure, thus allow electric current to flow to the contact " e " of switch S 2 from the contact " d " of switch S 2, and flow to the terminal T2 of ADC 203 successively.When ADC 203 receives this current signal of terminal T2, ADC 203 starts compressor motor 205, condenser fan motor 206 and evaporator fan motor 207.When the temperature in thermostat 106 detects refrigerating chamber 101 was cooled to required standard, thermostat 106 indicator cock S2 opened once more.Along with switch S 2 is opened, electric current no longer flows to the terminal T2 of ADC 203.Owing to do not have current signal at terminal T2, ADC 203 stops to start compressor motor 205, condenser fan motor 206 and evaporator fan motor 207, and finishes cool cycles basically.
Temperature in thermostat 108 detects fresh food compartment 102 raises when surpassing required standard, and thermostat 108 indication refrigeration units 100 enter cold air transfer cycle.Thermostat 108 makes switch S 1, and " a " and " b " joining initial position moves to contact " a " and " c " joining second place from the contact.The second place of switch S 1 allow electric current from power line L1, through closed triac 201, through switch S 1, flow to the contact " f " of switch S 3 and the contact " i " of switch S 4.Switch S 3 is in the position of connecting terminal " f " and contact " h ", and switch S 4 is in the position of connecting terminal " i " and contact " k ".Like this, allow electric current to flow to damper motor 202, and be its energize or its startup.The damper motor 202 that is supplied to energy is suitable for driving damper door 104 (Fig. 1) thereby opening cold air is delivered to fresh food compartment 102 from refrigerating chamber 110 by opening 103.
Because damper door 104 mechanically connects with switch S 3, as known in the art, when damper door 104 arrived open position, switch S 3 was operated connecting terminal " g " and contact " h ", and switch S 4 is operated connecting terminal " j " and contact " k ".Because the terminal " b " of switch S 1 is not connected to power line L1, after damper door 104 arrived open position, electric current stopped to flow to damper motor 202.Especially, switch S 3 and switch S 4 are standby, one of open and close, and damper door 104 stops under the semi-open position of power loss to stop.
Temperature in thermostat 108 detects fresh food compartment 102 suitably reduces, and thermostat indicator cock S1 opens.Along with switch S 1 is opened, damper motor 202 is received current no longer, and damper door 104 can be closed.Damper door 104 is general by bias piece, and for example, spring or other elastic component are pulled back to closure from open position.
According to adaptive control logic, refrigeration unit 100 is instructed to enter defrost cycle sometimes, accumulates on evaporimeter 110 coil pipes or the frost around it (for example, ice) with thawing.During defrost cycle, ADC 203 starts Defrost heater 204 to melt the frost on the evaporimeter 110.The operation of heater 120 has produced the air (for example, temperature is higher than the air that cryogenic temperature and relative humidity are higher than conventional freezing chamber normal value) of warm moist, thereby removes or reduced attached to any ice or condensate on the coil pipe.Because the rising of temperature in the refrigerating chamber 101 is followed in the thawing of ice and the evaporation of condensate, the warm moist that becomes of the air in the refrigerating chamber 101.
Except starting Defrost heater 120, ADC 203 also will guarantee to suspend without compressor motor 205, condenser motor 206 and evaporator fan motor 207.Since defrost cycle generation heat, and cool cycles absorbs heat, and these two cycle through ADC 203 with exclusive mode control and startup.As a result, even switch S 2 is attempted to start cool cycles by thermostat 106 indicating closings, ADC 203 also can ignore the closure of switch.Therefore, up to finishing defrost cycle, element 205,206 and 207 all keeps not being activated regardless of the position of switch S 2.In other words, heat absorption (or exchange) process is inoperative always to support defrost cycle.
In addition, during defrost cycle, ADC 203 also indicates triac 201 closures.As shown in Figure 2, the triac 201 that is not activated is forbidden current direction damper motor 202.Therefore, even switch S 1 is attempted to begin cold air transfer cycle by thermostat 108 indicating closings, electric current can not flow to damper motor 202.Like this, during defrost cycle, the position of switch S 1 becomes nonsensical.As a result, during defrost cycle, opening 103 keeps damped door 104 to stop, does not allow the refrigerating chamber 101 interior warm-humid airs that produce to escape and enters fresh food compartment 102.
As shown in Figure 3, show another embodiment of control loop 300, be used for during defrost cycle, making damper door to remain closed the position.With reference to figure 3, self adaptation defrost controller (ADC) 303 is coordinated the operation of compressor motor 305, condenser motor 306, Defrost heater 304 and triac 301.Compressor motor 305 is connected between the terminal T6 and ground wire N of ADC 303, and is started by ADC during cool cycles.Condenser motor 306 is connected between the terminal T7 and ground wire N of ADC 303, and is started by ADC during cool cycles.Evaporator fan motor 307 is connected between the terminal T8 and ground wire N of ADC 303, and is started by ADC 303 during cool cycles.Heater 304 is connected on the terminal T5 of ADC303, and is started by ADC during defrost cycle.Triac 301 is connected between power line L1 and the damper motor 302, and is started by ADC 303 by the control line on the terminal T3 that is connected to ADC 303.Triac 301 is started by ADC 303 during defrost cycle, flows to damper motor 302 with the restriction electric current.In other words, triac 301 stops damper motor 302 to be activated during defrost cycle or to move.The power line L1 that ADC 303 further is connected at terminal T1 and on the ground wire N of T4.
Temperature in thermostat 106 detects refrigerating chamber 101 raises when surpassing required standard, and thermostat 106 indication refrigeration units 300 enter cool cycles.During cool cycles, switch S 2 closures, thus allow electric current to flow to the contact " e " of switch S 2 from the contact " d " of switch S 2, and flow to the terminal T2 of ADC 303 successively.When ADC 303 receives this current signal of terminal T2, ADC 303 starts compressor motor 305, condenser motor 306 and evaporator fan motor 307.Temperature in thermostat 106 detects refrigerating chamber 101 is cooled to prescribed level, and thermostat indicator cock S2 opens once more.Along with switch S 2 is opened, electric current no longer flows to the terminal T2 of ADC 303.Owing to do not have current signal at terminal T2, ADC stops to start compressor motor 305, condenser motor 306 and evaporator fan motor 307, and finishes cool cycles basically.
Temperature in thermostat 108 detects fresh food compartment 102 raises when surpassing required standard, this thermostat makes switch S 5 " m " and " n " does not connect from the contact initial (for example, open) position (for example moves to contact " m " and " n " joining second, closed) position, to enter cold air transfer cycle.The second switch position is closed loop between the terminal T11 of ADC 303 and terminal T9.When detecting this closed-loop path, ADC 303 opens triac 301, allows electric current to flow to damper door motor 302.As a result, the damper motor 302 that is provided energy drives damper door 104 and opens, thereby allows cold air to flow to fresh food compartment 102 from refrigerating chamber 101 by opening 103.
Because damper door 104 mechanically connects with switch S 6, as known in the art, when damper door 104 arrived open position, switch S 6 was not operating as and connects, and break contact " q " and " r ".Follow opening of switch S 6, the loop between the terminal T9 of ADC 303 and the terminal T10 is disconnected, and result notification ADC damper door is shown in an open position.
When the temperature in thermostat 108 detects fresh food compartment 102 was cooled to receivable standard, thermostat indicator cock S5 opened.Like this, disconnected connection between terminal T11 and the terminal T9.When this connection is disconnected, ADC 303 perceives this situation and closed triac 301.Along with the closure of triac, damper motor 302 no longer is supplied to energy, and damper door 104 is allowed to closure.The closure of damper door 104 has caused mechanically being connected in the closure of the switch S 6 on the damper door.Like this, the loop between the terminal T9 of ADC 303 and the terminal T10 is rebulid, and notice ADC 303 damper door are closed.
According to adaptive control logic, refrigeration unit 300 is instructed to enter defrost cycle sometimes, accumulates on evaporimeter 110 coil pipes or any frost around it (for example, ice) with thawing.During defrost cycle, ADC 303 starts Defrost heater 304 to melt the frost on the evaporimeter 110.As previously mentioned, heat that heater 120 produces and warm air be allowed to flow through evaporimeter 110 coil pipes and around it around, thereby remove or reduce attached to any ice or condensate on the coil pipe.Because the thawing of ice and the evaporation of condensate, when the temperature refrigerating chamber 101 in raises, the interior air of refrigerating chamber 101 warm moist that becomes.
Except starting Defrost heater 120, ADC 303 also will guarantee to suspend without compressor motor 305, condenser motor 306 and evaporator fan motor 307.Owing to defrost cycle produces heat, and cool cycles absorbs heat, and these two circulations are controlled with exclusive mode by ADC 303 and started.As a result, though switch S 2 by thermostat 106 indicating closings to attempt to start kind of refrigeration cycle, ADC 303 also can ignore the closure of switch.Therefore, up to finishing defrost cycle, element 305,306 and 307 all keeps not being activated regardless of the position of switch S 2.In other words, heat absorption (or exchange) process keeps inoperative to support defrost cycle.
In addition, during defrost cycle, ADC 303 should indicate triac 301 closures.As shown in Figure 3, the triac 301 of closure forms the ELECTRONIC COVER of the electric current that flows to damper motor 302.Therefore, even switch S 5 should be by thermostat 108 indicating closings to attempt to begin cold air transfer cycle, electric current can not flow to damper motor 302.Like this, during defrost cycle, the position of switch S 5 becomes, and it doesn't matter.As a result, during defrost cycle, opening 103 remains damped door 104 to be stopped, does not allow the refrigerating chamber 101 interior warm-humid airs that produce to escape and enters fresh food compartment 102.
According to the abovementioned embodiments of the present invention, and those skilled in the art can recognize, when refrigeration unit 100 is in defrost cycle, cut off owing to lead to the triac 201,301 that the current path of damper motor 202,203 is closed, the switch S 1 and the S5 of thermostat 108 closures that begins cold air transfer cycle usually is inoperative.Owing to be not activated or be supplied to energy, damper door 104 can not be driven and open, and no matter how are switch S 1 and S5, and the warm-humid air that produces during defrost cycle all can not flow from refrigerating chamber 101 and arrive fresh food compartment 102.In addition, one of ordinary skill in the art would recognize that, though in Fig. 2 and Fig. 3, describe in detail and triac 201,301 be described, in control loop 200,300, can use the device and/or the switch of dissimilar and kind, flow to stop electric current.
Except conventionally known self adaptation defrosting control logic, the flow chart of Fig. 4 is also for example understood and is used to the additional logic of guaranteeing that damper door 104 is closed during defrost cycle.When control loop 200,300 beginnings 399 of refrigeration unit 100, self adaptation defrosting control logic judges before entering defrost cycle whether 400 damper door are opened.If damper door is opened, defrost cycle is suspended up to door and is closed.If the damper door closure, self adaptation defrosting control logic is cut off and is led to the electric power 401 (for example, providing barrier between damper door motor and power supply) of damper door motor, thereby damper door can not be opened during defrost cycle.Along with damper door and power supply disconnect, defrost cycle is performed 402.After defrost cycle was finished, self adaptation defrosting control logic was removed the barrier between damper door motor and the power supply, thereby damper motor is allowed to turn round 403 once more.Along with damper motor drives damper door once more, the protection circulation finishes 404, and damper door is open and close as required, thereby at the equipment normal operation period cold air is passed to fresh food compartment from refrigerating chamber, begins up to next defrost cycle.
All comprise publication, patent application and patent at this list of references of quoting, and are introduced into as a reference with such degree: be introduced into as a reference separately and ad hoc as each list of references, and be used in full.
In describing content of the present invention (in the content of especially following claim), the use of term " " and " being somebody's turn to do " and analogous terms is interpreted as covering simultaneously odd number and plural number, except as otherwise noted or with the obvious contradiction of content.Term " comprises ", " having ", " comprising " and " containing " be interpreted as open term (for example, the meaning is " including, but are not limited to "), except as otherwise noted.Enumerating of number range only is for as dropping on the simple expression of the discrete values in the scope with reference to each separately, and except as otherwise noted, and each discrete values is introduced into specification, quoted at this separately as it.All methods described here can be performed with suitable order, except as otherwise noted or with the obvious contradiction of content.Any and all referred in this example or exemplary language () use for instance, " for example " all only is for the present invention is described better, rather than scope of the present invention is limited, Unless Otherwise Requested.In this manual, there is not language to be construed as feature to the vital any non-claim of enforcement of the present invention.
The preferred embodiment of the present invention comprises execution known for inventor preferred forms of the present invention, is described at this.By reading above stated specification, the modification of these preferred embodiments is apparent for those of ordinary skills.The inventor wishes that the technical staff takes the circumstances into consideration to carry out modification, and except this clearly describes, the inventor wishes that this invention is implemented.Therefore, this invention comprises all changes and the equivalent of this theme that claims of being allowed by applicable law are enumerated.In addition, any combination of the above-mentioned feature in all possible modification all is included in the present invention, except as otherwise noted or with the obvious contradiction of linguistic context.
Claims (20)
1. one kind is used to stop the opening of stream of warm air overdamp door adjusting and enter the equipment of fresh food compartment, and this warm air produces at refrigerating chamber during defrost cycle, and this equipment comprises:
Damper motor, it is suitable for driving damper door;
Thermostat, it operationally connects with damper motor, and this thermostat is suitable for starting damper motor;
ELECTRONIC COVER, it is between thermostat and power supply; And
Controller, it operationally connects with ELECTRONIC COVER, and this controller is suitable for opening ELECTRONIC COVER during defrost cycle, thereby forbids the damper motor operation.
2. equipment as claimed in claim 1, wherein electronic shield is a triac.
3. equipment as claimed in claim 1, wherein when electronic shield when controlled device has been opened, thermostat does not act on.
4. equipment as claimed in claim 1, further comprise an additional thermostat, it is between power supply and controller, and when additional thermostat started, controller made one or more the bringing into operation in compressor motor, condenser motor and the evaporator fan.
5. equipment as claimed in claim 4, its middle controller are formed at the operation that stops compressor motor, condenser motor and evaporator fan during the defrost cycle.
6. equipment as claimed in claim 1 further is included in the Defrost heater that is supplied to energy during the defrost cycle.
7. equipment as claimed in claim 1, wherein this equipment further comprises one or more backup circuit breakers, and it is between thermostat and damper motor, and this backup circuit breaker is configured to stop damper door to be shown in an open position during power loss.
8. equipment as claimed in claim 1, wherein this equipment further comprises the damper door switch, this damper door switch operationally connects with controller, thus controller is apprised of the position of damper door.
9. one kind is used to stop the opening of stream of warm air overdamp door adjusting and enter the equipment of fresh food compartment, and this warm air produces at refrigerating chamber during defrost cycle, and this equipment comprises:
Damper motor, it is suitable for driving damper door;
Thermostat, it operationally connects with damper motor, and this thermostat is suitable for starting damper motor to open damper door;
Switch, it is between damper motor and power supply; And
Controller, it operationally connects with switch, and this controller is programmed opening switch during defrost cycle, thereby damper motor is not acted on, and opens during defrost cycle to stop damper door.
10. equipment as claimed in claim 9, wherein switch is a triac.
11. equipment as claimed in claim 9, wherein when switch when controlled device has been opened, thermostat does not act on.
12. equipment as claimed in claim 9 further comprises the additional thermostat that operationally connects with controller, this controller is formed at when adding the thermostat startup, makes compressor motor, condenser motor and evaporator fan bring into operation.
13. equipment as claimed in claim 12, its middle controller are formed at the operation that stops compressor motor, condenser motor and evaporator fan during the defrost cycle.
14. equipment as claimed in claim 9 further comprises the Defrost heater that is positioned at refrigerating chamber.
15. equipment as claimed in claim 9 further comprises one or more backup circuit breakers, it is between thermostat and damper motor, and this backup circuit breaker stops damper door to remain in open position during power loss.
16. equipment as claimed in claim 9, wherein this equipment further comprises the damper door switch, and this damper door switch operationally connects with controller, thereby controller is apprised of the position of damper door.
17. a method that stops warm air to flow through the opening in the refrigerating chamber during defrost cycle and flow to fresh food compartment may further comprise the steps:
The operation of damper door is not acted on;
Carry out defrost cycle; With
After the step of carrying out defrost cycle is finished, the operation of damper door can be started.
18. method as claimed in claim 17 further comprises the step that detects the damper door state, and when the step indication damper door that detects the damper door state is closed, carries out this not action step and execution in step.
19. comprising, method as claimed in claim 17, the step that the operation of damper door is not acted on stop electric current to flow to the step of damper motor.
20. method as claimed in claim 17, the step that the operation of damper door is not acted on comprise the step that stops electric current to flow through thermostat.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66668205P | 2005-03-31 | 2005-03-31 | |
| US60/666,682 | 2005-03-31 | ||
| US11/388,035 | 2006-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101151496A true CN101151496A (en) | 2008-03-26 |
| CN100520245C CN100520245C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800087865A Expired - Fee Related CN100520245C (en) | 2005-03-31 | 2006-03-24 | Damper door control from adaptive defrost control |
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| Country | Link |
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| CN (1) | CN100520245C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062970A (en) * | 2011-10-19 | 2013-04-24 | 赛默飞世尔科技(阿什维尔)有限责任公司 | High performance refrigerator having insulated evaporator cover |
| US9285153B2 (en) | 2011-10-19 | 2016-03-15 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having passive sublimation defrost of evaporator |
| US9310121B2 (en) | 2011-10-19 | 2016-04-12 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having sacrificial evaporator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960001695A (en) * | 1994-06-22 | 1996-01-25 | 이헌조 | Cold air circulation system of the refrigerator |
| US5490395A (en) * | 1994-11-21 | 1996-02-13 | Whirlpool Corporation | Air baffle for a refrigerator |
| KR19990005704A (en) * | 1997-06-30 | 1999-01-25 | 배순훈 | Defroster of the refrigerator |
| CN1206099A (en) * | 1997-07-23 | 1999-01-27 | 三星电子株式会社 | Refrigerator capable of preventing heat exchange between evaporator and outside warm air |
| US6622503B1 (en) * | 2002-03-01 | 2003-09-23 | Ranco Inc. Of Delaware | Evaporator fan control system for a multi-compartment refrigerator |
-
2006
- 2006-03-24 CN CNB2006800087865A patent/CN100520245C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062970A (en) * | 2011-10-19 | 2013-04-24 | 赛默飞世尔科技(阿什维尔)有限责任公司 | High performance refrigerator having insulated evaporator cover |
| US9285153B2 (en) | 2011-10-19 | 2016-03-15 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having passive sublimation defrost of evaporator |
| US9310121B2 (en) | 2011-10-19 | 2016-04-12 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having sacrificial evaporator |
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| Publication number | Publication date |
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| CN100520245C (en) | 2009-07-29 |
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