Refrigerating and freezing device and control method thereof
The technology of a refrigerating and freezing device and a control method, which is applied in household refrigeration devices, cooling fluid circulation devices, coolers, etc., can solve the problems of bulky size and high cost, and achieve the effects of increasing working hours, saving energy, and improving service life
Active Publication Date: 2017-05-17
HAIER SMART HOME CO LTD
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Problems solved by technology
But until now, due to the large size and high cost of nitrogen-generating equipment traditionally used for controlled atmosphere preservation, this technology has basically been limited to use in various large-scale professional storages (storage capacity is generally at least 30 tons or more).
It can be said that what kind of appropriate gas adjustment technology and corresponding devices can be used to economically miniaturize and quiet the air conditioning system, making it suitable for families or individual users, is a problem that technicians in the field of air conditioning and fresh-keeping have been eager to solve but have never been able to solve. Technical problems that can be successfully solved
Method used
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Embodiment Construction
[0033] This embodiment firstly provides a kind of refrigerating and freezing device, figure 1 is a schematic diagram of a refrigerating and freezing device according to an embodiment of the present invention; figure 2 It is a schematic diagram of the drawer 20 of the refrigerating and freezing device according to one embodiment of the present invention; image 3 is a schematic block diagram of a refrigerating and freezing device according to an embodiment of the present invention; Figure 4 is a schematic block diagram of a refrigerating and freezing device according to another embodiment of the present invention. The refrigerating and freezing device includes: a box body 10 , a modified atmosphere membrane module 30 , an air suction pump 40 , a main control board 50 and a detection device 60 for opening and closing a modified atmosphere fresh-keeping space. The above-mentioned refrigerating and freezing device may be a refrigerator, a freezer, or the like.
[0034] The bo...
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The invention provides a control method of a refrigerating and freezing device. The control method comprises the following steps: starting up an air pump, enabling the air pump to run for a first preset time, and then stopping to enable the concentration of nitrogen in a controlled atmosphere fresh-keeping space to reach a preset concentration threshold value; detecting whether the controlled atmosphere fresh-keeping space is opened and then closed or not: if yes, judging whether the stop duration of the air pump exceeds a second preset time; and if the stop duration of the air pump exceeds the second preset time, controlling the air pump to start after the controlled atmosphere fresh-keeping space is closed for a third preset time, enabling the air pump to continually run for the first preset time, and then stopping. Opening of the controlled atmosphere fresh-keeping space can result in leakage of nitrogen in the controlled atmosphere fresh-keeping space, and consequently, the concentration of nitrogen is reduced. Therefore, the air pump needs to re-pump to enable the concentration of nitrogen in the controlled atmosphere fresh-keeping space to be maintained within a concentration range favorable for food fresh-keeping, and a nitrogen-rich and oxygen-poor fresh-keeping atmosphere is continually provided for food.
Description
technical field [0001] The invention relates to the refrigeration field, in particular to a refrigeration and freezing device and a control method thereof. Background technique [0002] Modified atmosphere preservation technology generally refers to the technology of prolonging the life of food storage by adjusting the gas atmosphere (gas composition ratio or gas pressure) in the closed space where the storage is located. The basic principle is: in a certain closed space A gas atmosphere different from normal air components is obtained through various adjustment methods to inhibit the physiological and biochemical processes and microbial activities that cause the storage (usually food) to deteriorate. In particular, in this application, the discussed modified atmosphere fresh-keeping will be specifically aimed at the modified-atmosphere fresh-keeping technology that adjusts the ratio of gas components. [0003] Those skilled in the art all know that normal air composition i...
Claims
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IPC IPC(8): F25D11/02F25D17/04F25D17/06F25D29/00
CPCF25D11/02F25D17/042F25D17/065F25D29/003F25D2317/04F25D2500/06F25D2600/06
Inventor 娄喜才王铭朱小兵王磊
Owner HAIER SMART HOME CO LTD