CN111609663A

CN111609663A - Fresh-keeping control device, refrigerator and fresh-keeping control method thereof

Info

Publication number: CN111609663A
Application number: CN202010372350.6A
Authority: CN
Inventors: 韩鹏; 皮芳; 刘畅
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-09-01

Abstract

The invention discloses a fresh-keeping control device, a refrigerator and a fresh-keeping control method thereof, wherein the device comprises: the detection unit is used for detecting the storage environment parameters inside the preservation box for storing the articles to be preserved and/or the opening and closing state of the preservation box; the control unit controls the opening or closing of the air-conditioning membrane unit; and/or controlling the opening or closing of the ethylene degradation unit according to the ethylene concentration in the preservation box and/or the opening and closing state of the preservation box; the air adjusting film unit is used for adjusting the air atmosphere in the preservation box so as to enable the air atmosphere in the preservation box to reach the target air atmosphere range allowed by the preservation of the articles to be preserved; and the ethylene degradation unit is used for degrading ethylene in the preservation box so that the ethylene concentration in the preservation box is in a target ethylene concentration range allowed by the preservation of the articles to be preserved. The scheme of the invention can solve the problem of short preservation period of the refrigerator on tropical fruits, and achieves the effect of prolonging the preservation period of the refrigerator on the tropical fruits.

Description

Fresh-keeping control device, refrigerator and fresh-keeping control method thereof

Technical Field

The invention belongs to the technical field of preservation, and particularly relates to a preservation control device, a refrigerator and a preservation control method thereof, in particular to a preservation control device of a refrigerator with a tropical fruit storage room, a refrigerator with the tropical fruit storage room and a preservation control method of the refrigerator with the tropical fruit storage room.

Background

With the rapid development of economy, people can purchase tropical fruits such as lychees, longans, guavas and the like in markets or on the internet no matter where people live, and the tropical fruits have the characteristics of high respiratory strength, low temperature, easiness in freezing injury, high temperature, easiness in decay and deterioration and the like. Because the prior domestic tropical fruit preservation technology is lack, the tropical fruits bought by people can not be stored for a long time, and a new refrigerator preservation technology is urgently needed to prolong the preservation period of the tropical fruits.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention aims to provide a preservation control device, a refrigerator and a preservation control method thereof aiming at the defects, so as to solve the problem that the preservation period of the refrigerator for tropical fruits is short and achieve the effect of prolonging the preservation period of the refrigerator for the tropical fruits.

The invention provides a fresh-keeping control device, comprising: the device comprises a detection unit, an air-conditioned membrane unit, an ethylene degradation unit and a control unit; the device comprises a detection unit, a control unit and a control unit, wherein the detection unit is used for detecting storage environment parameters inside a preservation box for storing articles to be preserved and/or the opening and closing state of the preservation box; storage environment parameters including: ethylene concentration; the control unit is used for controlling the opening or closing of the air-conditioned membrane unit; and/or controlling the opening or closing of the ethylene degradation unit according to the ethylene concentration in the preservation box and/or the opening and closing state of the preservation box; the air conditioning film unit is used for conditioning the gas atmosphere in the preservation box so as to enable the gas atmosphere in the preservation box to reach the target gas atmosphere range allowed by the preservation of the articles to be preserved; the inside gaseous atmosphere of crisper includes: humidity, oxygen concentration, and/or carbon dioxide concentration; and the ethylene degradation unit is used for degrading ethylene in the preservation box so as to enable the ethylene concentration in the preservation box to be in the target ethylene concentration range allowed by the preservation of the articles to be preserved.

Optionally, an ethylene degradation unit comprising: a sterilization module and an air circulation module; the sterilization module is used for sterilizing the storage environment in the preservation box; and the air circulation module is used for accelerating the gas flow rate in the preservation box.

Optionally, a sterilization module comprising: an ozone generator; an air circulation module comprising: an air circulation fan; wherein, the ozone generator is arranged on the top wall of the preservation box; and the air circulation fan is arranged on the side wall of the preservation box.

Optionally, a sterilization module comprising: a titanium dioxide material sheet and an ultraviolet lamp, or an activated carbon material sheet and an ultraviolet lamp; an air circulation module comprising: an air circulation fan; the fresh-keeping box comprises a fresh-keeping box body, a titanium dioxide material sheet, an ultraviolet lamp, an active carbon material sheet, an ultraviolet lamp, a modified atmosphere film unit and a control module, wherein the titanium dioxide material sheet and the ultraviolet lamp or the active carbon material sheet and the ultraviolet lamp are arranged on the top wall of the fresh-keeping box and are used for sterilizing the storage environment in the fresh-keeping box under the condition that the modified; and the air circulation fan is arranged on the side wall of the preservation box.

Optionally, the control unit controls the opening or closing of the ethylene degradation unit, comprising: determining whether the ethylene concentration in the preservation box is larger than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the preservation box is the target state; if the ethylene concentration in the preservation box is greater than the upper limit of the target ethylene concentration range and/or the opening and closing state of the preservation box is the target state, controlling the ethylene degradation unit to be opened; determining whether the ethylene concentration inside the crisper has decreased to less than or equal to the lower limit of the target ethylene concentration range; and if the ethylene concentration in the fresh-keeping box is reduced to be less than or equal to the lower limit of the target ethylene concentration range, controlling the ethylene degradation unit to be closed.

Optionally, the storage environment parameters further comprise: gas atmosphere; the control unit is also used for determining whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the preservation box is the target state; if the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or the opening and closing state of the preservation box is the target state, controlling the opening of the air-conditioning film unit; determining whether the gas atmosphere in the preservation box reaches a target gas atmosphere range; and if the gas atmosphere in the preservation box reaches the target gas atmosphere range, controlling the gas-adjusting film unit to be closed.

Optionally, a modified atmosphere membrane unit having a modified atmosphere membrane: the modified atmosphere film has target air permeability, target carbon dioxide selective permeability and target moisture permeability, and is used for reducing the oxygen concentration in the gas atmosphere in the preservation box and increasing the carbon dioxide concentration in the gas atmosphere in the preservation box.

In accordance with the above apparatus, another aspect of the present invention provides a refrigerator, comprising: the fresh-keeping control device.

In another aspect, the present invention provides a fresh-keeping control method for a refrigerator, including: detecting storage environment parameters inside a preservation box for storing the articles to be preserved and/or the opening and closing state of the preservation box through a detection unit; storage environment parameters including: ethylene concentration; the opening or closing of the air-conditioning membrane unit is controlled through the control unit; and/or controlling the opening or closing of the ethylene degradation unit according to the ethylene concentration in the preservation box and/or the opening and closing state of the preservation box; adjusting the gas atmosphere inside the preservation box through the gas adjusting film unit so that the gas atmosphere inside the preservation box reaches the target gas atmosphere range allowed by the preservation of the articles to be preserved; the inside gaseous atmosphere of crisper includes: humidity, oxygen concentration, and/or carbon dioxide concentration; ethylene in the preservation box is degraded through the ethylene degradation unit, so that the ethylene concentration in the preservation box is in the target ethylene concentration range allowed by the preservation of the articles to be preserved.

Optionally, controlling the opening or closing of the ethylene degradation unit by a control unit comprises: determining whether the ethylene concentration in the preservation box is larger than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the preservation box is the target state; if the ethylene concentration in the preservation box is greater than the upper limit of the target ethylene concentration range and/or the opening and closing state of the preservation box is the target state, controlling the ethylene degradation unit to be opened; determining whether the ethylene concentration inside the crisper has decreased to less than or equal to the lower limit of the target ethylene concentration range; and if the ethylene concentration in the fresh-keeping box is reduced to be less than or equal to the lower limit of the target ethylene concentration range, controlling the ethylene degradation unit to be closed.

Optionally, the storage environment parameters further comprise: gas atmosphere; the fresh-keeping control method of the refrigerator further comprises the following steps: through the control unit, whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or whether the opening and closing state of the preservation box is the target state is determined; if the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or the opening and closing state of the preservation box is the target state, controlling the opening of the air-conditioning film unit; determining whether the gas atmosphere in the preservation box reaches a target gas atmosphere range; and if the gas atmosphere in the preservation box reaches the target gas atmosphere range, controlling the gas-adjusting film unit to be closed.

According to the scheme, the tropical fruits are preserved by inhibiting the respiration of the tropical fruits, and the preservation time of the tropical fruits can be prolonged.

Furthermore, according to the scheme of the invention, the preservation of tropical fruits is realized by properly reducing the storage temperature, maintaining the proper environmental relative humidity, reducing the O2 and ethylene concentration of the storage environment, increasing the CO2 concentration and the like through a preservation technology, and the preservation effect of the tropical fruits can be improved.

Furthermore, the scheme of the invention combines the air-conditioned membrane technology and the ozone ethylene removal device for the preservation of tropical fruits, can improve the preservation effect of the tropical fruits, prolong the preservation period of the tropical fruits and improve the user experience.

Therefore, according to the scheme provided by the invention, the air-conditioned film technology and the ethylene removal technology are combined to inhibit the respiration of tropical fruits, so that the tropical fruits are preserved, the problem of short preservation period of the refrigerator on the tropical fruits is solved, and the effect of prolonging the preservation period of the refrigerator on the tropical fruits is achieved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a freshness control device according to the present invention;

fig. 2 is a schematic structural view of a tropical fruit storage compartment according to an embodiment of the refrigerator of the present invention;

fig. 3 is a schematic flow chart of tropical fruit storage according to an embodiment of the refrigerator of the present invention;

FIG. 4 is a flowchart illustrating an embodiment of a freshness control method according to the present invention;

FIG. 5 is a schematic flow diagram of one embodiment of controlling the on or off of an ethylene degradation unit in the process of the present invention;

FIG. 6 is a schematic flow chart of an embodiment of controlling the opening and closing of the controlled atmosphere membrane unit in the method of the present invention.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

1-tropical fruit storage; 2-air-conditioning membrane; 3-ethylene concentration detector; 4-an ozone generator; 5-air circulation fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, a freshness control device is provided. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The fresh-keeping control device can be applied to fruit and vegetable fresh keeping, particularly to fresh-keeping equipment of tropical fruits such as a fresh-keeping refrigerator of the tropical fruits, and the fresh-keeping control device of the fresh-keeping refrigerator of the tropical fruits can comprise: the device comprises a detection unit, a modified atmosphere film unit, an ethylene degradation unit and a control unit. The detection unit, the modified atmosphere unit and the ethylene degradation unit can be arranged on a preservation box of the to-be-preserved goods, and if the to-be-preserved goods are tropical fruits, the detection unit, the modified atmosphere unit and the ethylene degradation unit can be arranged on the tropical fruit storage room 1. The detection unit, the modified atmosphere film unit and the ethylene degradation unit can be respectively connected to the control unit.

Specifically, the detection unit may be configured to automatically start a detection function of the preservation box when the tropical fruit storage mode of the preservation box is opened, or detect storage environment parameters inside the preservation box storing the items to be preserved and/or an open/close state of the preservation box when the tropical fruit storage mode of the preservation box is opened and the detection function of the detection unit is opened. Storage environment parameters may include: the ethylene concentration.

For example: the detection unit may be a sensor, such as an oxygen sensor, a carbon dioxide sensor, an ethylene sensor, or the like. The ethylene concentration detector 3 can detect the ethylene concentration in the tropical fruit storeroom 1, and can adjust the ethylene concentration in the tropical fruit storeroom 1 according to the detected value of the ethylene concentration in the tropical fruit storeroom 1, so as to effectively reduce the ethylene concentration of the storage environment of the tropical fruit storeroom 1.

For example: the opening and closing state of the preservation box can be the opening or closing state of the preservation box, the closing state of the preservation box after being opened firstly, and the like. The fresh food box, such as the hot fruit storage compartment 1, may have a housing, such as a rectangular housing, having an accommodating space therein, in which hot fruits can be accommodated. The tropical fruit storage chamber 1 may be relatively independent of the refrigerating chamber and the freezing chamber, and has a separate air outlet and a separate air return opening. The temperature setting of the tropical fruit storage room 1 is preferably 8-12 ℃.

Specifically, the control unit may be configured to control the opening or closing of the tropical fruit storage mode of the fresh food box, for example, to open or close the tropical fruit storage mode when receiving an opening or closing instruction of the tropical fruit storage mode transmitted by a user, or to open the tropical fruit storage mode when detecting that there is tropical fruit in the refrigerator, or to close the tropical fruit storage mode when detecting that there is no tropical fruit in the refrigerator. Under the condition that the tropical fruit storage mode is started, the tropical fruit storage mode is operated, the tropical fruit storage function can be started for operation under the condition that a user needs to use the tropical fruit storage function, selective use of the user is facilitated, and energy waste and the phenomenon that the tropical fruit storage mode is started by default and fresh-keeping treatment of non-tropical fruit articles to be kept fresh are not facilitated are avoided. Furthermore, the control unit can be used for controlling the opening or closing of the air-conditioning film unit and controlling the opening or closing of the detection unit under the tropical fruit storage mode of the preservation box. Specifically, under the condition that the detection unit is opened, the ethylene degradation unit is controlled to be opened or closed according to the ethylene concentration inside the preservation box and/or the opening and closing state of the preservation box. For example: the control unit can be a first controller of a fresh-keeping device for the articles to be kept fresh, such as a refrigerator, or can be a second controller which is arranged independently.

Specifically, the modified atmosphere film unit can be used for automatically opening under the condition that the tropical fruit storage mode is opened, or opening or closing under the control of the control unit under the condition that the tropical fruit storage mode is opened, and adjusting the gas atmosphere inside the preservation box under the conditions that the tropical fruit storage mode is opened and the tropical fruit storage mode is opened, namely the modified atmosphere function of the tropical fruit storage mode is opened, so that the gas atmosphere inside the preservation box reaches the target gas atmosphere range allowed by the preservation of the articles to be preserved. The gas atmosphere inside the crisper may include: humidity, oxygen concentration, and/or carbon dioxide concentration.

For example: the modified atmosphere film unit can be a modified atmosphere film device. The air-conditioning film fresh-keeping device can adjust the air atmosphere in the tropical fruit storeroom 1 and reduce O in the tropical fruit storeroom 1₂Concentration, maintenance of high CO₂Concentration, low O₂A dense gas atmosphere.

In an alternative example, a modified atmosphere membrane unit, having a modified atmosphere membrane 2: the controlled atmosphere film 2 has a target gas permeability, a target carbon dioxide selective permeability, and a target moisture permeability, and can be used to reduce the oxygen concentration in the gas atmosphere inside the fresh food box and to increase the carbon dioxide concentration in the gas atmosphere inside the fresh food box.

For example: in the storage mode of tropical fruits, the air-conditioning film 2 is used for preserving and maintaining high CO₂Concentration, low O₂A dense gas atmosphere. The characteristics of the air-adjusting film 2 can be high air permeability and high CO₂Selective permeability and high moisture permeability.

Therefore, the modified atmosphere film 2 with the target air permeability, the target carbon dioxide selective permeability and the target moisture permeability is simple in structure, the gas atmosphere in the preservation box can be conveniently maintained in the target gas atmosphere range of the tropical fruits, and the preservation effect of the storage environment of the tropical fruits is favorably improved.

Specifically, the ethylene degradation unit can be used for opening or closing under the control of the control unit when the tropical fruit storage mode is opened, and degrading ethylene inside the preservation box when the tropical fruit storage mode is opened and the tropical fruit storage mode is opened, namely the ethylene degradation function of the tropical fruit storage mode is opened, so that the ethylene concentration inside the preservation box is in a target ethylene concentration range allowed by the preservation of the articles to be preserved. For example: the ethylene degradation unit may be an ethylene removal unit.

Wherein, the modified atmosphere film unit and the ethylene degradation unit can be used at the same time or not. For example, in the case where simultaneous activation of the modified atmosphere unit and the ethylene degradation unit affects the effect of each other, they may be alternately activated or alternately activated.

For example: because the respiratory intensity of tropical fruits is very high, the respiratory action of the tropical fruits needs to be inhibited by a fresh-keeping technology, namely, a fresh-keeping mode suitable for storing the tropical fruits in a household refrigerator is provided, the storage time of the tropical fruits is prolonged, and the fresh-keeping period of the refrigerator, particularly the household refrigerator, to the tropical fruits is prolonged. Specifically, the storage ambient oxygen (O) can be reduced by appropriately reducing the storage temperature, maintaining an appropriate ambient relative humidity, and reducing the storage ambient oxygen₂) And ethylene concentration, carbon dioxide (CO) elevation₂) Concentration, etc. Wherein, the controlled atmosphere film technology can be maintainedSustaining high CO₂Concentration, low O₂In the atmosphere of concentration, the ozone ethylene removal device can effectively reduce the ethylene concentration, obviously inhibit the respiration of tropical fruits, prolong the preservation period of the tropical fruits, and at least solve the problem that the refrigerator has short preservation period of the tropical fruits, such as the problem that the domestic refrigerator can not store the tropical fruits for a long time.

Therefore, the air atmosphere in the preservation box for the articles to be preserved, particularly tropical fruits, is adjusted by using the air adjusting film technology, and the ethylene in the preservation box for the articles to be preserved, particularly tropical fruits, is degraded by using the ethylene degradation technology, so that the respiration of the tropical fruits can be inhibited, the storage time of the tropical fruits is prolonged, and the preservation period of the refrigerator, particularly a household refrigerator, on the tropical fruits is prolonged.

In an alternative example, the ethylene degradation unit may comprise: a sterilization module and an air circulation module. The sterilization module can be an ozone sterilization module or an ultraviolet sterilization module, and the sterilization module can be arranged on the top wall of the preservation box such as the tropical fruit storage room 1. The air circulation module may be an air circulation fan 5, and the air circulation fan 5 may be installed at a sidewall of the fresh food box such as the tropical fruit storage room 1.

In particular, the sterilization module can be used for sterilizing the storage environment inside the preservation box.

In particular, the air circulation module may be used to increase the gas flow rate inside the crisper, for example, between the air inlet and the air outlet of the crisper.

Therefore, the gas flowing speed in the preservation box is accelerated while the storage environment in the preservation box is sterilized, the ethylene concentration in the preservation box can be degraded, and for example, ethylene can be decomposed into CO₂And H₂And O, the effects of inhibiting respiration and accelerating ethylene ripening are achieved, and the preservation effect of the storage environment inside the preservation box on the articles to be preserved, particularly tropical fruits, is favorably improved.

Optionally, the sterilization module may include: an ozone generator 4. An air circulation module may include: an air circulation fan 5.

Wherein, the ozone generator 4 is arranged on the top wall of the preservation box. For example: the ozone generator 4 can generate ozone to sterilize the storage environment of the tropical fruit storage chamber 1.

And the air circulation fan 5 is arranged on the side wall of the preservation box. For example: the air circulation fan 5 can properly reduce the storage temperature and maintain the proper relative humidity of the environment by adjusting the air circulation rate in the tropical fruit storage chamber 1.

For example: the tropical fruit storage chamber 1 is provided with an air-conditioning film fresh-keeping device, an air circulation fan 5, an ethylene concentration detector 3 and an ozone generator 4. The modified atmosphere film 2 is arranged in the modified atmosphere film preservation device. The tropical fruit storage chamber 1, the air conditioning film preservation device, the air circulation fan 5, the ethylene concentration detector 3 and the ozone generator 4 can be arranged on any shell wall of the rectangular shell or inside the rectangular shell. Preferably, the modified atmosphere preservation device, the ethylene concentration detector 3 and the ozone generator 4 can be arranged on the top casing wall of the rectangular casing, and the air circulation fan 5 can be arranged on the side wall of the rectangular casing.

In an exemplary example, in the case that the ethylene degradation unit selects to turn on the ultraviolet radiation lamp and the air circulation fan 5, in the storage mode of the tropical fruit, the ethylene concentration detector 3 automatically detects the ethylene concentration ρ in the storage chamber 1 of the tropical fruit, and determines whether the ethylene concentration ρ in the storage chamber 1 of the tropical fruit is greater than the upper limit of the target ethylene concentration range, and if the ethylene concentration ρ in the storage chamber 1 of the tropical fruit is greater than the upper limit of the target ethylene concentration range, the ozone generator 4 and the air circulation fan 5 are turned on. And if the ethylene concentration rho in the tropical fruit storeroom 1 is less than or equal to the upper limit of the target ethylene concentration range, continuously detecting the ethylene concentration rho in the tropical fruit storeroom 1. Wherein, the upper limit of the target ethylene concentration range may be the first ethylene concentration ρ₀。

Further, when the storage mode of the tropical fruit is started, the controlled atmosphere device and the ethylene concentration detector 3 can both operate continuously, and when the ethylene concentration detector 3 detects that the ethylene concentration rho in the storage chamber 1 of the tropical fruit is larger than the first ethylene concentration rho₀While, the air circulatesThe fan 5 and the ozone generator 4 are programmed to automatically turn on for a certain time T, and ethylene is decomposed into CO by releasing ozone molecules to react with ethylene molecules in the tropical fruit storage room 1₂And H₂And O, simultaneously achieving the functions of inhibiting respiration and accelerating ethylene ripening, otherwise, not starting the air circulation fan 5 and the ozone generator 4. After the ozone generator 4 is automatically started for a certain time T, the ethylene concentration detector continues to detect the ethylene concentration in the storage chamber, and when the ethylene concentration rho is less than or equal to rho₁The ozone generator 4 is temporarily not switched on, otherwise the ozone generator 4 and the air circulation fan 4 will run again for a time T.

Further, after the ozone generator 4 and the air circulation fan 5 are started, the ozone generator 4 and the air circulation fan 5 are operated for a certain time T to degrade the ethylene concentration rho in the tropical fruit storage room 1. When the device is used, the ozone generator 4 and the air circulation fan 5 can be automatically started, or the device can remind a user to manually start when the ethylene concentration rho in the tropical fruit storage room 1 is larger than the upper limit of the target ethylene concentration range. For example: the automatic opening time T of the ozone generator 4 is more than or equal to 15min, and the automatic opening time T of the air circulation fan 5 is more than or equal to 15 min.

Further, after the ozone generator 4 and the air circulation fan 5 are operated for a certain time T to degrade the ethylene concentration ρ in the storage chamber 1 of the tropical fruit, it is determined again whether the ethylene concentration ρ in the storage chamber 1 of the tropical fruit is less than or equal to the lower limit of the target ethylene concentration range, and if the ethylene concentration ρ in the storage chamber 1 of the tropical fruit is less than or equal to the lower limit of the target ethylene concentration range, the ozone generator 4 and the air circulation fan 5 are turned off; if the ethylene concentration ρ in the storage compartment 1 of tropical fruit is greater than the lower limit of the target ethylene concentration range, the ozone generator 4 and the air circulation fan 5 are continuously operated to continuously degrade the ethylene concentration ρ in the storage compartment 1 of tropical fruit. When the device is used, the ozone generator 4 and the air circulation fan 5 can be automatically turned off, or the device can remind a user to manually turn off when the ethylene concentration rho in the tropical fruit storage room 1 is smaller than or equal to the lower limit of the target ethylene concentration range. Wherein, the lower limit of the target ethylene concentration range can be the second ethylene concentration rho₁. Target ethylene concentration range ρ₀-ρ₁The concentration difference delta rho is more than or equal to the set concentration difference delta rho, and the delta rho is more than or equal to 0.

From this, degrade the inside ethylene of preservation box through utilizing ozone generator 4 and air cycle fan 5, simple structure, and degradation effect is good, is favorable to promoting the fresh-keeping effect of tropical fruit.

Optionally, the sterilization module may include: a titanium dioxide material sheet and an ultraviolet lamp, or an activated carbon material sheet and an ultraviolet lamp. An air circulation module may include: an air circulation fan 5.

The titanium dioxide material sheet and the ultraviolet lamp or the activated carbon material sheet and the ultraviolet lamp are arranged on the top wall of the preservation box and can be used for sterilizing the storage environment inside the preservation box under the condition that the air-conditioned membrane unit is closed. For example: the ozone generator 4 in the tropical fruit storage 1 can be replaced by a piece of titanium dioxide/activated carbon material and an ultraviolet radiation lamp can be installed.

In an illustrative example, in the case where the ethylene degradation unit employs a titanium dioxide/activated carbon material sheet, an ultraviolet irradiation lamp, and an air circulation fan 5, when the ethylene concentration ρ > the first ethylene concentration ρ in the storage chamber₀When the air conditioning membrane device is started, the ultraviolet radiation lamp is automatically started, the air conditioning membrane device is closed, the titanium dioxide/activated carbon material sheet starts to perform catalytic degradation on ethylene in the storage chamber under the irradiation of the ultraviolet lamp, the action time T of the ultraviolet lamp is synchronous with the operation of the air circulation fan 5, otherwise, the ultraviolet radiation lamp is not started, and the air conditioning membrane device is started. Wherein the action time T of the ultraviolet lamp is more than or equal to 15min, and the wavelength of the ultraviolet lamp is less than or equal to 387.5 nm.

Further, an ethylene concentration detector 3 continuously detects the ethylene concentration in the storage chamber, and when the ethylene concentration rho is less than or equal to the second ethylene concentration rho₁And if not, the air-conditioning film device is closed, and the ultraviolet radiation lamp and the air circulation fan 5 automatically run for a time T.

In an optional example, the controlling unit controls the opening or closing of the ethylene degradation unit according to the ethylene concentration inside the fresh keeping box and/or the opening and closing state of the fresh keeping box, and may include: determining whether the ethylene concentration in the fresh-keeping box is larger than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the fresh-keeping box is a target state (such as a state of opening first and then closing).

Further, in the process that the control unit controls the opening or closing of the ethylene degradation unit, if the ethylene concentration inside the preservation box is greater than the upper limit of the target ethylene concentration range and/or the opening and closing state of the preservation box is the target state (such as the state of first opening and then closing), the ethylene degradation unit is controlled to be opened so as to degrade ethylene inside the preservation box by using the ethylene degradation unit.

In addition, under the condition that whether the ethylene concentration in the preservation box is larger than the upper limit of the target ethylene concentration range is judged independently, if the ethylene concentration in the preservation box is smaller than or equal to the upper limit of the target ethylene concentration range, the ethylene degradation unit is not started. Under the condition that the judgment is carried out according to the condition that the opening and closing state of the fresh-keeping box is the target state (such as the state of opening first and closing second), if the opening and closing state of the fresh-keeping box is not the target state (such as the state of opening first and closing second), the ethylene degradation unit is not started. Under the condition of comprehensively judging according to whether the ethylene concentration in the preservation box is larger than the upper limit of the target ethylene concentration range or not and whether the opening and closing state of the preservation box is the target state (such as the state of opening first and closing second or not), if the ethylene concentration in the preservation box is smaller than or equal to the upper limit of the target ethylene concentration range and the opening and closing state of the preservation box is not the target state (such as the state of opening first and closing second or not), the ethylene degradation unit is not started.

Further, in the process of controlling the opening or closing of the ethylene degradation unit by the control unit, after controlling the opening of the ethylene degradation unit, it is determined whether the ethylene concentration inside the fresh food box has decreased to be less than or equal to the lower limit of the target ethylene concentration range.

Further, in the process that the control unit controls the opening or closing of the ethylene degradation unit, if the ethylene concentration inside the fresh-keeping box is reduced to be less than or equal to the lower limit of the target ethylene concentration range, the ethylene degradation unit is controlled to be closed, and then the steps of determining whether the ethylene concentration inside the fresh-keeping box is greater than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the fresh-keeping box is the target state (such as the state of opening first and closing second) can be returned to determine whether the ethylene degradation unit needs to be opened again.

In an exemplary example, in the case that the ethylene degradation unit selects to turn on the ultraviolet radiation lamp and the air circulation fan 5, or the ethylene degradation unit selects to use the titanium dioxide/activated carbon material sheet, the ultraviolet radiation lamp and the air circulation fan 5, the determination of the opening/closing state of the fresh keeping box is based on the target state (for example, the state of opening first and then closing) alone may include: the tropical fruit storage room 1 is not provided with an ethylene concentration sensor, that is, the tropical fruit storage room 1 is not provided with an ethylene concentration detector 3, but is additionally provided with an automatic door opening sensing system, when a program senses that the tropical fruit storage room 1 is opened and closed, the ozone generator 4 and the air circulation fan 5 are automatically turned on (see the relevant description of the ozone generator 4 and the air circulation fan 5), or the ultraviolet radiation lamp and the air circulation fan 5 are automatically turned on (see the relevant description of turning on the ultraviolet radiation lamp and the air circulation fan 5), and the automatic turn-on time is T.

From this, through selectively opening ethylene degradation unit according to the inside ethylene concentration of crisper, can just open ethylene degradation unit when needs degrade the inside ethylene concentration of crisper to suitably practice thrift the cost that ethylene degradation unit degrades the inside ethylene concentration of crisper.

In an alternative embodiment, the storage environment parameters may further include: and (4) gas atmosphere. A gaseous atmosphere, which may include: humidity, oxygen concentration, and/or carbon dioxide concentration. The control unit may be further configured to control the opening or closing of the modified atmosphere film unit according to the humidity, the oxygen concentration, and/or the carbon dioxide concentration inside the fresh keeping box, and specifically may include: determining whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the preservation box is the target state (such as the state of opening first and then closing).

Further, in the process that the control unit controls the opening or closing of the modified atmosphere unit, if the gas atmosphere inside the fresh-keeping box does not reach the target gas atmosphere range and/or the opening and closing state of the fresh-keeping box is the target state (such as the state of first opening and then closing), the controlled atmosphere unit is controlled to be opened, so that the gas atmosphere inside the fresh-keeping box is adjusted by the modified atmosphere unit.

In addition, under the condition that whether the gas atmosphere in the preservation box reaches the target gas atmosphere range is judged independently, if the gas atmosphere in the preservation box reaches the target gas atmosphere range, the controlled atmosphere film unit is not started. Under the condition that the opening and closing state of the fresh-keeping box is judged to be the target state (such as the state of opening first and closing second) independently, if the opening and closing state of the fresh-keeping box is not the target state (such as the state of opening first and closing second), the air-conditioning film unit is not opened. Under the condition of comprehensively judging according to whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range or not and whether the opening and closing state of the preservation box is the target state (such as the state of opening first and closing second or not), if the gas atmosphere in the preservation box reaches the target gas atmosphere range and the opening and closing state of the preservation box is not the target state (such as the state of opening first and closing second or not), the air-conditioning film unit is not opened.

Further, in the process of controlling the opening or closing of the modified atmosphere unit by the control unit, after controlling the opening of the modified atmosphere unit, it is determined whether the gas atmosphere inside the fresh keeping box has reached the target gas atmosphere range.

Further, in the process that the control unit controls the opening or closing of the modified atmosphere unit, if the gas atmosphere inside the fresh-keeping box reaches the target gas atmosphere range, the modified atmosphere unit is controlled to close, and then the steps of determining whether the gas atmosphere inside the fresh-keeping box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the fresh-keeping box is the target state (such as the state of opening before closing) can be returned to determine whether the modified atmosphere unit needs to be opened again.

Therefore, the controlled atmosphere film unit can be started only when the gas atmosphere in the preservation box needs to be regulated by selectively starting the controlled atmosphere film according to the gas atmosphere in the preservation box, so that the cost of regulating the gas atmosphere in the preservation box by the controlled atmosphere film unit is properly saved.

A large number of tests prove that the technical scheme of the invention can realize the preservation of tropical fruits by inhibiting the respiration of the tropical fruits and prolong the preservation time of the tropical fruits.

According to the embodiment of the invention, the refrigerator corresponding to the fresh-keeping control device is also provided. The refrigerator may include: the fresh-keeping control device.

In an alternative embodiment, at least in order to solve the problem that the refrigerator has a short preservation period for tropical fruits, such as the problem that a household refrigerator cannot store the tropical fruits for a long time, a preservation method suitable for the household refrigerator to store the tropical fruits is needed to be found, and the storage time of the tropical fruits is prolonged, namely, the preservation period of the tropical fruits in the refrigerator, especially the household refrigerator, is prolonged. Therefore, the scheme of the invention provides the refrigerator with the tropical fruit storage room, and the refrigerator can combine the modified atmosphere film technology and the ozone ethylene removal device for preservation of the tropical fruits.

Since tropical fruits have high respiratory strength, it is necessary to suppress their respiration by a fresh-keeping technique, and storage temperature can be appropriately lowered, relative humidity of the environment can be appropriately maintained, and oxygen (O) in the storage environment can be reduced₂) And ethylene concentration, carbon dioxide (CO) elevation₂) Concentration, etc. Wherein the gas-regulating membrane technology can maintain high CO₂Concentration, low O₂In the atmosphere of concentration, the ozone ethylene removal device can effectively reduce the ethylene concentration, obviously inhibit the respiration of tropical fruits and prolong the refreshing time of the tropical fruits.

The following describes an exemplary implementation process of the scheme of the present invention with reference to the examples shown in fig. 2 and fig. 3.

Example one

Fig. 2 is a schematic structural view of a tropical fruit storage compartment according to an embodiment of the refrigerator of the present invention.

As shown in FIG. 2, the storage chamber 1 of tropical fruit is provided with a controlled atmosphere film preservation device, an air circulation fan 5, an ethylene concentration detector 3 and an ozone generator 4. The modified atmosphere film 2 is arranged in the modified atmosphere film preservation device.

Wherein, the controlled atmosphere film fresh-keeping device can adjust the gas atmosphere in the tropical fruit storeroom 1 and reduce the O in the tropical fruit storeroom 1₂Concentration, maintenance of high CO₂Concentration, low O₂A dense gas atmosphere. The air circulation fan 5, the air circulation fan 5 and the ozone generator 4 are programmed to be automatically started for a certain time T, and ethylene is decomposed into CO by releasing ozone molecules to react with ethylene molecules in the storage chamber₂And H₂O, and simultaneously achieves the effects of inhibiting respiration and accelerating ethylene ripening. The ozone generator 4 mainly functions to degrade ethylene molecules in the fruit box and secondly functions to sterilize. The air circulation fan 5 is to accelerate the ethylene degradation rate. The ethylene concentration detector 3 can detect the ethylene concentration in the tropical fruit storeroom 1.

Alternatively, the hot fruit storage chamber 1 may have a housing such as a rectangular housing having an accommodating space therein in which hot fruits can be accommodated. The air-conditioning film fresh-keeping device, the air circulation fan 5, the ethylene concentration detector 3 and the ozone generator 4 can be arranged on any shell wall of the rectangular shell or in the rectangular shell. Preferably, the modified atmosphere preservation device, the ethylene concentration detector 3 and the ozone generator 4 can be arranged on the top casing wall of the rectangular casing, and the air circulation fan 5 can be arranged on the side wall of the rectangular casing.

Fig. 3 is a schematic flow chart of tropical fruit storage according to an embodiment of the refrigerator of the present invention.

As shown in fig. 3, the procedure of tropical fruit storage may include:

step 1, starting a tropical fruit storage mode of a preservation device such as a refrigerator. Under the condition that the tropical fruit storage mode is started, the tropical fruit storage mode is operated, the tropical fruit storage function can be started for operation under the condition that a user needs to use the tropical fruit storage function, selective use of the user is facilitated, and energy waste and the phenomenon that the tropical fruit storage mode is started by default and fresh-keeping treatment of non-tropical fruit articles to be kept fresh are not facilitated are avoided.

The tropical fruit storage chamber 1 may be relatively independent of the refrigerating chamber and the freezing chamber, and has a separate air outlet and a separate air return opening. The temperature setting of the tropical fruit storage room 1 is preferably 8-12 ℃.

Step 2, under the storage mode of tropical fruits, the air-conditioning film 2 is used for fresh-keeping operation, and high CO can be maintained₂Concentration, low O₂A dense gas atmosphere.

Alternatively, the modified atmosphere membrane 2 may be characterized by high gas permeability, high CO₂Selective permeability and high moisture permeability.

For example: the controlled atmosphere film material can be polyvinyl alcohol. The modified atmosphere film has a certain water vapor, oxygen and carbon dioxide transmission rate. The respiration of the fruit consumes oxygen and produces carbon dioxide and produces water vapor by transpiration, so that the oxygen of the fruit box is reduced initially and carbon dioxide and humidity are increased. After a period of time, the fruit box reaches an equilibrium state, namely the permeation amount of oxygen outside the fruit box from the modified atmosphere film is equal to the oxygen consumption of fruits and vegetables, and the permeation amount of carbon dioxide and water vapor inside the fruit box from the modified atmosphere film is equal to the amount of generated fruits, so that the fruit box can keep an environment with low oxygen, high carbon dioxide and proper humidity for a long time.

The principle of ventilation is that polyvinyl alcohol is a strong polar polymer, O₂、CO₂The non-polar molecules are not easy to combine, so that oxygen outside the fruit and vegetable box is not easy to enter the fruit and vegetable box, carbon dioxide in the box is gradually increased, finally, the respiration of the fruit and vegetable and the air permeability of the air-conditioning film can reach balance, and the high-carbon-dioxide and low-oxygen environment in the fruit and vegetable box is maintained.

Step 3, under the storage mode of the tropical fruits, automatically detecting the ethylene concentration rho in the storage chamber 1 of the tropical fruits by the ethylene concentration detector 3, judging whether the ethylene concentration rho in the storage chamber 1 of the tropical fruits is larger than the upper limit of the target ethylene concentration range, and if the ethylene concentration rho in the storage chamber 1 of the tropical fruits is larger than the upper limit of the target ethylene concentration range, starting the ozone generator 4 and the air circulation fan 5; and if the ethylene concentration rho in the tropical fruit storeroom 1 is less than or equal to the upper limit of the target ethylene concentration range, continuously detecting the ethylene concentration rho in the tropical fruit storeroom 1.

Wherein, the upper limit of the target ethylene concentration range may be the first ethylene concentration ρ₀。

Optionally, in step 2 and step 3, when the storage mode of the tropical fruit is turned on, the controlled atmosphere device and the ethylene concentration detector 3 can both be continuously operated, and when the ethylene concentration detector 3 detects that the ethylene concentration ρ > the first ethylene concentration ρ > in the storage chamber 1 of the tropical fruit₀When the fruit storage room is used, the air circulation fan 5 and the ozone generator 4 are programmed to be automatically started for a certain time T, and ethylene is decomposed into CO by releasing ozone molecules to react with ethylene molecules in the tropical fruit storage room 1₂And H₂And O, simultaneously achieving the functions of inhibiting respiration and accelerating ethylene ripening, otherwise, not starting the air circulation fan 5 and the ozone generator 4. After the ozone generator 4 is automatically started for a certain time T, the ethylene concentration detector continues to detect the ethylene concentration in the storage chamber, and when the ethylene concentration rho is less than or equal to rho₁The ozone generator 4 is temporarily not switched on, otherwise the ozone generator 4 and the air circulation fan 4 will run again for a time T.

And 4, after the ozone generator 4 and the air circulation fan 5 are started, the ozone generator 4 and the air circulation fan 5 are operated for a certain time T to degrade the ethylene concentration rho in the tropical fruit storage room 1. When the device is used, the ozone generator 4 and the air circulation fan 5 can be automatically started, or the device can remind a user to manually start when the ethylene concentration rho in the tropical fruit storage room 1 is larger than the upper limit of the target ethylene concentration range.

For example: the automatic opening time T of the ozone generator 4 is more than or equal to 15min, and the automatic opening time T of the air circulation fan 5 is more than or equal to 15 min.

Step 5, after the ozone generator 4 and the air circulation fan 5 are operated for a certain time T to degrade the ethylene concentration rho in the tropical fruit storage chamber 1, judging whether the ethylene concentration rho in the tropical fruit storage chamber 1 is less than or equal to the lower limit of the target ethylene concentration range again, and if the ethylene concentration rho in the tropical fruit storage chamber 1 is less than or equal to the lower limit of the target ethylene concentration range, closing the ozone generator 4 and the air circulation fan 5; if the ethylene concentration ρ in the storage compartment 1 of tropical fruit is greater than the lower limit of the target ethylene concentration range, the ozone generator 4 and the air circulation fan 5 are continuously operated to continuously degrade the ethylene concentration ρ in the storage compartment 1 of tropical fruit. When the device is used, the ozone generator 4 and the air circulation fan 5 can be automatically turned off, or the device can remind a user to manually turn off when the ethylene concentration rho in the tropical fruit storage room 1 is smaller than or equal to the lower limit of the target ethylene concentration range.

Wherein, the lower limit of the target ethylene concentration range can be the second ethylene concentration rho₁. Target ethylene concentration range ρ₀-ρ₁The concentration difference delta rho is more than or equal to the set concentration difference delta rho, and the delta rho is more than or equal to 0.

Example two

The refrigerator having the tropical fruit storage chamber 1 of the present embodiment has the same basic structure as the above embodiment, but is different from the above embodiment in that the ozone generator 4 in the tropical fruit storage chamber 1 is replaced with a titanium dioxide/activated carbon material sheet, and an ultraviolet irradiation lamp is installed. Wherein the action time T of the ultraviolet lamp is more than or equal to 15min, and the wavelength of the ultraviolet lamp is less than or equal to 387.5 nm.

When the ethylene concentration rho in the storage chamber is larger than the first ethylene concentration rho₀When the ultraviolet radiation lamp is automatically turned on, the air-conditioning film device is turned off, and the ultraviolet radiation accelerates the degradation and aging of the air-conditioning film and influences the service life of the film, so the air-conditioning film device needs to be turned off. The titanium dioxide/activated carbon material sheet starts to perform catalytic degradation on ethylene in the storage chamber under the irradiation of the ultraviolet lamp, the action time T of the ultraviolet lamp is synchronous with the operation of the air circulation fan 5, otherwise, the ultraviolet lamp is not started, and the air-conditioning membrane device is started. The ethylene concentration detector 3 continuously detects the ethylene concentration in the storage chamber, and when the ethylene concentration rho is less than or equal to the second ethylene concentration rho₁And if not, the air-conditioning film device is closed, and the ultraviolet radiation lamp and the air circulation fan 5 automatically run for a time T.

EXAMPLE III

The refrigerator provided with the tropical fruit storage chamber 1 of the present embodiment has the same basic structure as the above embodiment, and is different from the above embodiment in that the tropical fruit storage chamber 1 of the present embodiment is not provided with an ethylene concentration sensor, that is, the tropical fruit storage chamber 1 is not provided with the ethylene concentration detector 3, but is additionally provided with a door opening sensing automatic system, when a program senses that the tropical fruit storage chamber 1 is opened and closed, the ozone generator 4 and the air circulation fan 5 (see the related description of the first embodiment) are automatically turned on, or the ultraviolet radiation lamp and the air circulation fan 5 (see the related description of the second embodiment) are automatically turned on, and the automatic turn-on time is T.

Since the processes and functions of the refrigerator of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 1, the descriptions of this embodiment are not detailed, and refer to the related descriptions in the embodiments, which are not described herein.

A large number of tests prove that by adopting the technical scheme of the invention and a preservation technology, the preservation of tropical fruits is realized by properly reducing the storage temperature, maintaining the proper environmental relative humidity, reducing the O2 and ethylene concentration of the storage environment, increasing the CO2 concentration and the like, and the preservation effect of the tropical fruits can be improved.

According to an embodiment of the present invention, a freshness keeping control method for a refrigerator is also provided, as shown in fig. 4, which is a schematic flow chart of an embodiment of the method of the present invention. The fresh-keeping control method of the refrigerator can be applied to fresh keeping of fruits and vegetables, particularly to fresh-keeping equipment of tropical fruits such as a fresh-keeping refrigerator of the tropical fruits, and the fresh-keeping control method of the fresh-keeping refrigerator of the tropical fruits can comprise the following steps: step S110 to step S140.

In step S110, the detection unit automatically starts its own detection function when the tropical fruit storage mode of the fresh keeping box is opened, or detects the storage environment parameter inside the fresh keeping box storing the items to be preserved and/or the open/close state of the fresh keeping box when the tropical fruit storage mode of the fresh keeping box is opened and the detection function of the detection unit is opened. Storage environment parameters may include: the ethylene concentration.

At step S120, the control unit controls the opening or closing of the tropical fruit storage mode of the fresh food box, for example, the opening or closing of the tropical fruit storage mode upon receiving an opening or closing instruction of the tropical fruit storage mode transmitted by a user, or the opening of the tropical fruit storage mode upon detecting the presence of tropical fruit in the refrigerator, or the closing of the tropical fruit storage mode upon detecting the absence of tropical fruit in the refrigerator. Under the condition that the tropical fruit storage mode is started, the tropical fruit storage mode is operated, the tropical fruit storage function can be started for operation under the condition that a user needs to use the tropical fruit storage function, selective use of the user is facilitated, and energy waste and the phenomenon that the tropical fruit storage mode is started by default and fresh-keeping treatment of non-tropical fruit articles to be kept fresh are not facilitated are avoided. Furthermore, the control unit can control the opening or closing of the air-conditioning film unit and the opening or closing of the detection unit under the tropical fruit storage mode of the preservation box. Specifically, under the condition that the detection unit is opened, the ethylene degradation unit is controlled to be opened or closed according to the ethylene concentration inside the preservation box and/or the opening and closing state of the preservation box. For example: the control unit can be a first controller of a fresh-keeping device for the articles to be kept fresh, such as a refrigerator, or can be a second controller which is arranged independently.

In step S130, the atmosphere inside the preservation box is automatically opened by the atmosphere control film unit when the tropical fruit storage mode is turned on, or is opened or closed under the control of the control unit when the tropical fruit storage mode is turned on, and the atmosphere inside the preservation box is adjusted when the tropical fruit storage mode is turned on and is turned on, that is, the atmosphere control function of the preservation box is turned on, so that the atmosphere inside the preservation box reaches a target atmosphere range allowed for preserving the articles to be preserved. The gas atmosphere inside the crisper may include: humidity, oxygen concentration, and/or carbon dioxide concentration.

In step S140, the ethylene degradation unit is controlled by the control unit to open or close when the storage mode of the tropical fruit is opened, and degrades ethylene inside the fresh-keeping box when the storage mode of the tropical fruit is opened and the tropical fruit is opened, that is, the ethylene degradation function of the tropical fruit is opened, so that the ethylene concentration inside the fresh-keeping box is within a target ethylene concentration range allowed for keeping fresh of the articles to be kept fresh. For example: the ethylene degradation unit may be an ethylene removal unit.

For example: because the respiratory intensity of tropical fruits is very high, the respiratory action of the tropical fruits needs to be inhibited by a fresh-keeping technology, namely, a fresh-keeping mode suitable for storing the tropical fruits in a household refrigerator is provided, the storage time of the tropical fruits is prolonged, and the fresh-keeping period of the refrigerator, particularly the household refrigerator, to the tropical fruits is prolonged. Specifically, the storage ambient oxygen (O) can be reduced by appropriately reducing the storage temperature, maintaining an appropriate ambient relative humidity, and reducing the storage ambient oxygen₂) And ethylene concentrationIncreasing carbon dioxide (CO)₂) Concentration, etc. Wherein the gas-regulating membrane technology can maintain high CO₂Concentration, low O₂In the atmosphere of concentration, the ozone ethylene removal device can effectively reduce the ethylene concentration, obviously inhibit the respiration of tropical fruits, prolong the preservation period of the tropical fruits, and at least solve the problem that the refrigerator has short preservation period of the tropical fruits, such as the problem that the domestic refrigerator can not store the tropical fruits for a long time.

In an alternative example, in step S140, the specific process of opening or closing the ethylene degradation unit is controlled by the control unit according to the ethylene concentration inside the crisper and/or the opening and closing state of the crisper, which can be seen in the following exemplary description.

The following further describes a specific process for controlling the opening or closing of the ethylene degradation unit in step S140 with reference to a schematic flow chart of an embodiment of controlling the opening or closing of the ethylene degradation unit in the method of the present invention shown in fig. 5, which may include: step S210 to step S240.

Step S210, determining whether the ethylene concentration inside the crisper is greater than the upper limit of the target ethylene concentration range, and/or determining whether the opening and closing state of the crisper is a target state (such as a state of opening first and then closing).

Step S220, if the ethylene concentration inside the fresh-keeping box is greater than the upper limit of the target ethylene concentration range and/or the opening and closing state of the fresh-keeping box is a target state (such as a state of first opening and then closing), controlling the ethylene degradation unit to open so as to degrade the ethylene inside the fresh-keeping box by using the ethylene degradation unit.

Step S230, after controlling the ethylene degradation unit to be turned on, determines whether the ethylene concentration inside the fresh food box has decreased to less than or equal to the lower limit of the target ethylene concentration range.

Step S240, if the ethylene concentration inside the fresh-keeping box has been reduced to be less than or equal to the lower limit of the target ethylene concentration range, the ethylene degradation unit is controlled to be closed, and then the steps of determining whether the ethylene concentration inside the fresh-keeping box is greater than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the fresh-keeping box is the target state (such as the state of opening first and closing second) may be returned to determine whether the ethylene degradation unit needs to be opened again.

In an alternative embodiment, the storage environment parameters may further include: and (4) gas atmosphere. A gaseous atmosphere, which may include: humidity, oxygen concentration, and/or carbon dioxide concentration. The fresh-keeping control method of the refrigerator can also comprise the following steps: and controlling the opening and closing of the air-conditioning membrane unit.

The following further describes a specific process for controlling the opening and closing of the modified atmosphere membrane unit with reference to a schematic flow chart of an embodiment of the method of the present invention shown in fig. 6, which may include: step S310 to step S340.

Step S310, controlling, by the control unit, the opening or closing of the modified atmosphere unit according to the humidity, the oxygen concentration, and/or the carbon dioxide concentration inside the preservation box, which may specifically include: determining whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the preservation box is the target state (such as the state of opening first and then closing).

Step S320, if the gas atmosphere inside the preservation box does not reach the target gas atmosphere range and/or the opening and closing state of the preservation box is the target state (such as the state of first opening and then closing), controlling the gas-adjusting film unit to open so as to adjust the gas atmosphere inside the preservation box by using the gas-adjusting film unit.

In step S330, after the controlled atmosphere control unit is turned on, it is determined whether the gas atmosphere inside the preservation box has reached the target gas atmosphere range.

In step S340, if the gas atmosphere inside the fresh-keeping box reaches the target gas atmosphere range, the controlled atmosphere unit is controlled to be closed, and then the step of determining whether the gas atmosphere inside the fresh-keeping box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the fresh-keeping box is the target state (such as the state of opening first and closing second) may be returned to determine whether the controlled atmosphere unit needs to be opened again.

Since the processing and functions implemented by the method of the present embodiment substantially correspond to the embodiments, principles and examples of the refrigerator, reference may be made to the related descriptions in the embodiments without being detailed in the description of the present embodiment, which is not described herein again.

A large number of experiments verify that the technical scheme of the embodiment is adopted, and the modified atmosphere film technology and the ozone ethylene removal device are jointly used for preservation of tropical fruits, so that the preservation effect of the tropical fruits can be improved, the preservation period of the tropical fruits is prolonged, and the user experience is improved.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A freshness-retaining control device, comprising: the device comprises a detection unit, an air-conditioned membrane unit, an ethylene degradation unit and a control unit;

wherein,

the detection unit is used for detecting the storage environment parameters inside the preservation box for storing the articles to be preserved and/or the opening and closing state of the preservation box; storage environment parameters including: ethylene concentration;

the control unit is used for controlling the opening or closing of the air-conditioned membrane unit; and/or controlling the opening or closing of the ethylene degradation unit according to the ethylene concentration in the preservation box and/or the opening and closing state of the preservation box;

the air conditioning film unit is used for conditioning the gas atmosphere in the preservation box so as to enable the gas atmosphere in the preservation box to reach the target gas atmosphere range allowed by the preservation of the articles to be preserved; the inside gaseous atmosphere of crisper includes: humidity, oxygen concentration, and/or carbon dioxide concentration;

and the ethylene degradation unit is used for degrading ethylene in the preservation box so as to enable the ethylene concentration in the preservation box to be in the target ethylene concentration range allowed by the preservation of the articles to be preserved.

2. The freshness control device of claim 1, wherein the ethylene degradation unit comprises: a sterilization module and an air circulation module; wherein,

the sterilization module is used for sterilizing the storage environment in the preservation box;

and the air circulation module is used for accelerating the gas flow rate in the preservation box.

3. The freshness control device of claim 2, wherein the sterilization module comprises: an ozone generator (4); an air circulation module comprising: an air circulation fan (5); wherein,

the ozone generator (4) is arranged on the top wall of the preservation box;

and the air circulation fan (5) is arranged on the side wall of the preservation box.

4. The freshness control device of claim 2, wherein the sterilization module comprises: a titanium dioxide material sheet and an ultraviolet lamp, or an activated carbon material sheet and an ultraviolet lamp; an air circulation module comprising: an air circulation fan (5); wherein,

the titanium dioxide material sheet and the ultraviolet lamp or the activated carbon material sheet and the ultraviolet lamp are arranged on the top wall of the preservation box and are used for sterilizing the storage environment in the preservation box under the condition that the air-conditioned membrane unit is closed;

5. The freshness control device according to any one of claims 1 to 4, wherein the control unit controls the opening or closing of the ethylene degradation unit, comprising:

determining whether the ethylene concentration in the preservation box is larger than the upper limit of the target ethylene concentration range and/or determining whether the opening and closing state of the preservation box is the target state;

if the ethylene concentration in the preservation box is greater than the upper limit of the target ethylene concentration range and/or the opening and closing state of the preservation box is the target state, controlling the ethylene degradation unit to be opened;

determining whether the ethylene concentration inside the crisper has decreased to less than or equal to the lower limit of the target ethylene concentration range;

and if the ethylene concentration in the fresh-keeping box is reduced to be less than or equal to the lower limit of the target ethylene concentration range, controlling the ethylene degradation unit to be closed.

6. The freshness control device according to any one of claims 1 to 5, wherein the storage environment parameters further comprise: gas atmosphere;

the control unit is also used for determining whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or determining whether the opening and closing state of the preservation box is the target state;

if the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or the opening and closing state of the preservation box is the target state, controlling the opening of the air-conditioning film unit;

determining whether the gas atmosphere in the preservation box reaches a target gas atmosphere range;

and if the gas atmosphere in the preservation box reaches the target gas atmosphere range, controlling the gas-adjusting film unit to be closed.

7. The freshness control device according to any one of claims 1 to 5, wherein the modified atmosphere film unit has a modified atmosphere film (2): the modified atmosphere film (2) has target air permeability, target carbon dioxide selective permeability and target moisture permeability, and is used for reducing the oxygen concentration in the gas atmosphere in the preservation box and increasing the carbon dioxide concentration in the gas atmosphere in the preservation box.

8. A refrigerator, characterized by comprising: the freshness control device of any one of claims 1 to 7.

9. A freshness keeping control method of a refrigerator according to claim 8, comprising:

detecting storage environment parameters inside a preservation box for storing the articles to be preserved and/or the opening and closing state of the preservation box through a detection unit; storage environment parameters including: ethylene concentration;

the opening or closing of the air-conditioning membrane unit is controlled through the control unit; and/or controlling the opening or closing of the ethylene degradation unit according to the ethylene concentration in the preservation box and/or the opening and closing state of the preservation box;

adjusting the gas atmosphere inside the preservation box through the gas adjusting film unit so that the gas atmosphere inside the preservation box reaches the target gas atmosphere range allowed by the preservation of the articles to be preserved; the inside gaseous atmosphere of crisper includes: humidity, oxygen concentration, and/or carbon dioxide concentration;

ethylene in the preservation box is degraded through the ethylene degradation unit, so that the ethylene concentration in the preservation box is in the target ethylene concentration range allowed by the preservation of the articles to be preserved.

10. The freshness control method of a refrigerator according to claim 9, wherein the controlling of the opening or closing of the ethylene degradation unit by the control unit comprises:

11. The freshness keeping control method of a refrigerator according to claim 9 or 10, wherein the storage environment parameter further comprises: gas atmosphere;

the fresh-keeping control method of the refrigerator further comprises the following steps:

through the control unit, whether the gas atmosphere in the preservation box does not reach the target gas atmosphere range and/or whether the opening and closing state of the preservation box is the target state is determined;