Summary of the invention
Main purpose of the present invention is to solve the problem and deficiency, there is provided a kind of to use in the refrigerator with temperature-changing chamber, for avoiding when temperature-changing chamber temperature is set in below 0 DEG C, the temperature of refrigerating drawer is lower than the refrigerator low temperature compensating method with temperature-changing chamber of 0 DEG C.
For achieving the above object, technical scheme of the present invention is:
A kind of refrigerator low temperature compensating method with temperature-changing chamber; at temperature-changing chamber design temperature lower than under refrigerating chamber design temperature condition, after refrigeration reaches refrigeration and alternating temperature design temperature is shut down, start refrigeration heating; to refrigerating chamber supply hot gas, compensate the impact on around temperature of refrigerating chamber of temperature-changing chamber temperature.
Further, the entry condition of described refrigeration heating is that described temperature-changing chamber is set in soft freezing or fresh-keeping gear and environment temperature lower than design temperature T1.
Further, the design temperature T1 of described environment temperature is 22 DEG C.
Further, the termination condition of described refrigeration heating is that refrigeration evaporator temperature reaches ceiling temperature T2;
Or the time of described refrigeration heating reaches upper limit time t1;
Or refrigeration evaporator temperature reaches lower limit temperature T3, and described temperature of refrigerating chamber reaches turn-on temperature or described temperature-changing chamber temperature reaches 0 DEG C.
Further, the ceiling temperature T2 of described refrigeration evaporator temperature is 10 DEG C.
Further, the upper limit time t1 of described refrigeration heating is 15 minutes.
Further, the lower limit temperature T3 of described refrigeration evaporator temperature is 5 DEG C.
Further, described turn-on temperature is 2-8 DEG C.
Further, at the end of refrigeration, after machine to be compressed stops a time t2, restart refrigeration heating.
Further, after refrigeration heating end one time t3, then refrigeration is restarted.
To sum up content, the refrigerator low temperature compensating method with temperature-changing chamber of the present invention, after refrigeration and alternating temperature reach design temperature, utilize refrigeration heater strip to refrigerating chamber computer heating control, compensate the impact on around temperature of refrigerating chamber of temperature-changing chamber temperature, ensure that the temperature of refrigerating drawer is higher than zero degree, solves the problem of refrigerating drawer zero passage, avoids the food frostbite in refrigerating drawer.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in Figure 1, the refrigerator low temperature compensating method with temperature-changing chamber of the present invention, is arranged on the wind cooling refrigerator in refrigerating chamber for temperature-changing chamber.
The refrigerating chamber of refrigerator divides three parts, and top is the refrigerating space 1 of large space, and centre is temperature-changing chamber 2, and bottom is refrigerating drawer 3.The back of refrigerating chamber is provided with air channel 4, refrigeration blower fan 5 and refrigeration evaporator 6 are set in air channel 4, the bottom of refrigeration evaporator 6 is provided with refrigeration heater strip 7, an air door 8 is provided with in the centre position in air channel 4, the refrigerating space 1 on top is separated with temperature-changing chamber 2 and refrigerating drawer 3 by air door 8, refrigeration blower fan 5, refrigeration evaporator 6 and refrigeration heater strip 7 are arranged on the back of temperature-changing chamber 2 and refrigerating drawer 3, above temperature-changing chamber 2, be communicated with an alternating temperature air channel 9, cold air is sent separately for giving temperature-changing chamber 2 in alternating temperature air channel 9.
Temperature-changing chamber 2 is generally provided with soft freezing, fresh-keeping gear, refrigeration gear etc., the design temperature of soft freezing gear is generally-7 DEG C, the design temperature of fresh-keeping gear is generally-1 DEG C, and when user is adjusted to this two gears, temperature-changing chamber 2 is just used as soft freezing chamber or fresh-keeping chamber.
Low temp compensating of the present invention refers to when temperature-changing chamber is set in soft freezing gear (-7 DEG C) or fresh-keeping gear (-1 DEG C), because temperature is lower than refrigerated storage temperature, make the temperature of refrigerating drawer 3 influenced and lower than zero degree, the food of refrigerating drawer 3 can be frozen, and avoid the temperature of refrigerating drawer 3 lower than zero degree by the mode of low temp compensating of the present invention.And do not selecting soft freezing gear or fresh-keeping gear; when only selecting refrigeration gear, do not carry out following low temp compensating, after reaching design temperature, keep the state of shutting down; until the temperature in temperature-changing chamber 2 rises to turn-on temperature again, then restart compressor and enter refrigerating state.
As shown in Figure 2, be described below in detail the method for low temp compensating, specifically comprise the steps:
1, user regulates the start gear of refrigerating chamber as required, and gear is different, and the turn-on temperature of refrigerating chamber is also different, and in the present embodiment, turn-on temperature is set between 2-8 DEG C.User is set in soft freezing gear or fresh-keeping gear more as required, and the design temperature of soft freezing gear is-7 DEG C, and the design temperature of fresh-keeping gear is generally-1 DEG C.
2, when temperature of refrigerating chamber reaches turn-on temperature, compressor and refrigeration blower fan 5 start, and air door 8 is opened, and starts refrigeration.
Return air in refrigerating chamber enters air channel 4 through return air inlet, carries out heat exchange with refrigeration evaporator 6, and the cold air after cooling enters refrigerating space 1, temperature-changing chamber 2 and refrigerating drawer 3 respectively along air channel 4 and alternating temperature air channel 9 under the effect of refrigeration blower fan 5, lowers the temperature to refrigerating chamber.
3, reach the design temperature of temperature of refrigerating chamber and temperature-changing chamber wait freezing after, compressor and refrigeration blower fan 5 are shut down, and now, testing environment temperature, if when environment temperature is lower than design temperature T1, starts refrigeration heating.
In the present embodiment, the design temperature T1 starting refrigeration heating is 22 DEG C, only has when environment temperature is lower than 22 DEG C, just starts refrigeration heating.
When 4, starting refrigeration heating, compressor shutdown, connects refrigeration heater strip 7, opens air door 8, starts refrigeration blower fan 5, supplies hot gas, to make the temperature of refrigerating space 1, refrigerating drawer 3 higher than 0 DEG C to refrigerating space 1, refrigerating drawer 3.
At the end of refrigeration; even if the entry condition meeting refrigeration heating can not start refrigeration heating immediately, after needing machine to be compressed to stop certain hour t2, restart and connect refrigeration heater strip 7; in the present embodiment; time t2 is chosen as 5 minutes, and namely machine to be compressed is shut down after at least 5 minutes and restarted refrigeration heating, because when just shutting down; the temperature of refrigeration evaporator 6 is very low; first allow the temperature of refrigeration evaporator 6 naturally go up a period of time, then open refrigeration heater strip 7, energy-conservation effect can be reached.
5, heater strip 7 is refrigerated in heating process, the temperature of refrigeration evaporator 6 is detected by refrigeration defrosting sensor, when detecting that the temperature of refrigeration evaporator 6 reaches this ceiling temperature T2 in ceiling temperature T2(the present embodiment and is set to 10 DEG C) time, terminate refrigeration heating schedule, disconnect refrigeration heater strip 7, close air door 8 and refrigeration blower fan 5, stop supplying hot gas to refrigerating space 1, refrigerating drawer 3.
The condition terminating refrigeration heating schedule can also be, control the time of refrigeration heating, namely connect the heat time and reach this upper limit time t1 in upper limit time t1(the present embodiment when refrigerating heater strip 7 and be set as 15 minutes) time, disconnect refrigeration heater strip 7, close air door 8 and refrigeration blower fan 5, stop supplying hot gas to refrigerating space 1, refrigerating drawer 3.
The condition terminating refrigeration heating schedule can also be, the temperature of refrigeration evaporator 6 is detected by refrigeration defrosting sensor, 5 DEG C are set to) when the temperature of refrigeration evaporator 6 reaches this lower limit temperature T3 in lower limit temperature T3(the present embodiment, simultaneously, temperature of refrigerating chamber reaches turn-on temperature, or the temperature of temperature-changing chamber 2 reaches 0 DEG C, disconnects refrigeration heater strip 7, close air door 8 and refrigeration blower fan 5, stop supplying hot gas to refrigerating space 1, refrigerating drawer 3.
When meeting one of them condition above-mentioned, namely refrigeration heating schedule is stopped, because while startup low temp compensating, the temperature of temperature-changing chamber 2 also can slowly be gone up, above-mentioned heating termination condition can ensure that the temperature of temperature-changing chamber 2 can not more than 0 DEG C, all the time in design temperature control range.
At the end of refrigeration heating schedule, even if the entry condition meeting refrigeration can not start compressor cooling immediately, after needing to stop heating certain hour t3, restart compressor, in the present embodiment, time t3 is chosen as 10 minutes, namely heater strip 7 to be refrigerated stops heating restarting compressor cooling after at least 10 minutes, because when just having stopped heating, the temperature of refrigeration heater strip 7 is higher, first allow the temperature of refrigeration heater strip 7 naturally fall a period of time after rise, then open compressor cooling, energy-conservation effect can be reached equally.
As mentioned above, plan content given by reference to the accompanying drawings, can derive similar technical scheme.In every case be the content not departing from technical solution of the present invention, any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.