Fresh-keeping chamber and refrigerator

Abstract

The fresh-keeping chamber comprises at least one chamber and a drawer matched with the chamber, the chamber is provided with a refrigeration air duct, a carbon dioxide treatment cabin with a built-in humidifying material adsorption layer, a condensation pipeline, a humidifying structure and ventilation equipment; a condensation pipeline is installed on the refrigeration air duct and communicated with the humidification structure and the carbon dioxide treatment cabin, and the carbon dioxide treatment cabin is further communicated with the refrigeration air duct and the humidification structure. The compartment is communicated with the humidifying structure and the ventilation device, and the ventilation device is further communicated with the carbon dioxide treatment cabin and the condensation pipeline. According to the fresh-keeping chamber, the concentration of carbon dioxide in the chamber is maintained through the release-adsorption process of the carbon dioxide treatment cabin, air in the carbon dioxide treatment cabin firstly passes through the humidification structure and then flows into the chamber, it is guaranteed that the air flowing into the chamber is high-humidity air, the humidity in the chamber is prevented from fluctuating, and the fresh-keeping effect of the fresh-keeping chamber is improved. And the fresh-keeping effect of the chamber is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration technical field especially relates to a fresh-keeping interval room and refrigerator. BACKGROUND

[0002] Fruit and vegetable can still carry out respiratory metabolism after picking, and a large amount of ethylene gas is produced in the metabolic process, which has the effect of accelerating the ripening of fruit and vegetable; ethylene can also diffuse to accelerate the ripening of other fruit and vegetable in the same space, cause the pericarp to become brown, the pulp to become soft, and finally aging and rot.

[0003] Therefore, the preservation methods of postharvest fruit and vegetable can be divided into ethylene removal preservation and carbon dioxide preservation, and carbon dioxide preservation places fruit and vegetable in an environment with a carbon dioxide concentration greater than 2%, thereby delaying the ripening speed of fruit and vegetable to achieve long-term preservation.

[0004] And the prior art is generally through direct air capture technology to capture and obtain high-concentration CO2 from air, and the absorption material of the direct air capture technology is mainly divided into three categories according to the CO2 capture mechanism: chemical absorption material, chemical adsorption material and physical adsorption material.

[0005] The chemical absorption material includes alkaline solution, amine solution and liquid amino acid salt hydrogel particles, and the absorption material needs high temperature (700~900℃) calcination for regeneration and release of carbon dioxide, which is not suitable for refrigerators.

[0006] The physical adsorption material such as molecular sieve and activated carbon is not suitable for use in the high-humidity environment of the fruit and vegetable drawer.

[0007] As shown in the accompanying drawings, Figure 1 The whole process of CO2 adsorption of the humidity change adsorption material in the chemical adsorption material does not depend on high-grade heat source, can greatly reduce energy consumption and cost, can be carried out at room temperature, uses the evaporation free energy of water as the energy source for CO2 regeneration, the main advantages are that the interface has high binding energy for CO2, and the adsorption of CO2 by the interface water is controllable, the adsorption-desorption process of CO2 gas can be realized by changing the water vapor partial pressure in the environment, the alkaline groups on the surface of the adsorbent in the dry state adsorb CO2 in the air, when the humidity in the environment increases, the adsorbent releases CO2, and the desorbed CO2 can be utilized or stored, and the humid adsorbent is regenerated by drying to regain the CO2 adsorption capacity.

[0008] However, the process of absorbing and releasing CO2 by the humidity change adsorption material will cause the humidity of the fruit and vegetable drawer to decrease, affecting the preservation effect. UTILITY MODEL CONTENT

[0009] The utility model provides a kind of fresh-keeping compartment and refrigerator, for solving the problem of humidity reduction in the process of fresh-keeping compartment absorbing-releasing CO2 by humidity changing adsorption material in prior art, affecting preservation effect.

[0010] The technical scheme of the utility model is a kind of fresh-keeping compartment, including at least one compartment and the drawer matched with the compartment, the compartment is provided with refrigeration air duct, carbon dioxide treatment cabin of built-in humidity changing material adsorption layer, condensing pipeline, humidification structure and ventilation equipment;

[0011] The condensing pipeline is communicated with the humidification structure and the carbon dioxide treatment cabin respectively, and the carbon dioxide treatment cabin is also communicated with the refrigeration air duct and the humidification structure respectively.

[0012] The compartment is communicated with the humidification structure and the ventilation equipment respectively, and the ventilation equipment is also communicated with the carbon dioxide treatment cabin and the condensing pipeline respectively.

[0013] Further, the humidity changing material adsorption layer is of porous structure, and the carbon dioxide treatment cabin is divided into release cabin and adsorption cabin by the humidity changing material adsorption layer; the humidity changing material adsorption layer is provided with heating grating on both sides thereof.

[0014] The release cabin is communicated with the humidification structure and the ventilation equipment respectively, and the adsorption cabin is communicated with the refrigeration air duct and the condensing pipeline respectively.

[0015] Further, the refrigeration air duct is provided with refrigeration air outlet, and the refrigeration air outlet is communicated with the carbon dioxide treatment cabin.

[0016] The refrigeration air outlet is correspondingly provided with adjusting structure, and the adjusting structure is used to control the air flow entering the carbon dioxide treatment cabin from the refrigeration air outlet.

[0017] Further, the adjusting structure includes guide rail, baffle and driving device.

[0018] The side wall of the carbon dioxide treatment cabin corresponding to both sides of the refrigeration air outlet is provided with guide rail, and each guide rail is slidably connected with baffle matched with the refrigeration air outlet, and each baffle is also connected with the output end of the driving device.

[0019] Further, the top wall of the compartment, the refrigeration air duct and the condensing pipeline are all made of heat-conducting material.

[0020] The top wall of the compartment is provided with refrigeration air duct closely attached thereto, and the top wall or outer side wall of the refrigeration air duct is provided with condensing pipeline closely attached thereto.

[0021] Further, the humidifying structure comprises a humidifying space, a condensate collecting box and a humidifying fan.

[0022] One of the outer walls of the chamber is provided with the humidifying space and the condensate collecting box side by side, and a wall surface between the humidifying space and the condensate collecting box is further provided with the humidifying fan.

[0023] The humidifying fan is used for evaporating the condensate in the condensate collecting box and delivering it to the humidifying space.

[0024] Further, the chamber is provided with a carbon dioxide sensor for detecting the carbon dioxide concentration in the chamber.

[0025] Further, the condensing pipeline is communicated with the carbon dioxide treatment cabin through a first pipeline, and an air pump is arranged on the first pipeline, which is used for extracting the gas in the condensing pipeline into the carbon dioxide treatment cabin.

[0026] Further, the wetting material adsorption layer is made of strong base ion exchange resin, and the strong base ion exchange resin comprises at least one of a quaternary ammonium ion functional group grafted mesoporous polymer, an amine group anion exchange resin dispersed in a polypropylene sheet, a phosphoric acid group ion exchange resin and a bamboo fiber quaternary ammonium material.

[0027] The utility model discloses still propose a kind of refrigerator, the refrigerator includes above-mentioned the fresh-keeping chamber.

[0028] Compared with prior art, the utility model at least has following beneficial effects:

[0029] The fresh-keeping chamber of the utility model maintains the carbon dioxide concentration in the chamber by the release-adsorption process of the carbon dioxide treatment cabin, and the air in the carbon dioxide treatment cabin is first flowed into the chamber after humidifying structure, to ensure that the air flowed into the chamber is high humidity air, to prevent the air in the carbon dioxide treatment cabin from directly entering the chamber to cause the humidity in the chamber to fluctuate, to affect the fresh-keeping effect of the chamber. BRIEF DESCRIPTION OF DRAWINGS

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the description and claims of the application as well as the above drawings, are not intended to limit the scope of the application to the particular embodiments described. The use of the terms "including", "containing" or "having" and any variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, contains, or has any of the recited elements is not required to contain all of them. The terms "first", "second", and the like, as used herein do not have their ordinary meaning.

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0032] Figure 1 Release-adsorption reaction principle diagram of the variable humidity adsorption material proposed for the background art;

[0033] Figure 2 Decomposition schematic view of the fresh-keeping compartment proposed for the present application;

[0034] Figure 3 Structure schematic view of the fresh-keeping compartment proposed for the present application;

[0035] Figure 4 Connection schematic view of the internal structure of the carbon dioxide treatment cabin and the refrigeration air duct proposed for the present application;

[0036] Figure 5 Partial internal structure schematic view of the fresh-keeping compartment proposed for the present application;

[0037] Figure 6 A module block diagram of the fresh-keeping compartment proposed for the present application;

[0038] Figure 7 Another module block diagram of the fresh-keeping compartment proposed for the present application.

[0039] Reference signs:

[0040] 11, compartment;

[0041] 12, drawer;

[0042] 13, refrigeration air duct; 131, refrigeration air outlet;

[0043] 14, carbon dioxide treatment cabin; 141, variable humidity material adsorption layer; 142, release cabin; 143, adsorption cabin; 144, heating grid; 145, second pipeline;

[0044] 15, condensation pipeline; 151, first pipeline; 152, air pump; 153, fifth pipeline; 154, humidity sensor; 155, control valve;

[0045] 16, humidification structure; 161, humidification space; 162, condensate water collection box; 163, humidification fan;

[0046] 17, ventilation equipment; 171, third pipeline; 172, fourth pipeline;

[0047] 18, adjusting structure; 181, guide rail; 182, baffle;

[0048] 19, carbon dioxide sensor. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Therefore, the features described in the specification are used to explain one of the features of one embodiment of the present application, but not to imply that each embodiment of the present application must have the features described. In addition, it should be noted that the specification describes many features. Although some features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly described. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0050] The principles and structures of the present application will be described in detail below in combination with the drawings and embodiments. Embodiment 1

[0051] Referring to the drawings Figures 2-3 The present application provides a fresh-keeping chamber, comprising two chambers 11 arranged side by side and a drawer 12 matched with the chambers 11, the chambers 11 are provided with a refrigeration air duct 13, a carbon dioxide treatment cabin 14 with a built-in humidity material adsorption layer 141, a condensing pipeline 15, a humidifying structure 16 and a ventilation device 17; the ventilation device 17 in the present embodiment is preferably a fan.

[0052] The condensing pipeline 15 is installed on the refrigeration air duct 13, and the condensing pipeline 15 is respectively communicated with the humidifying structure 16 and the carbon dioxide treatment cabin 14, and the carbon dioxide treatment cabin 14 is also respectively communicated with the refrigeration air duct 13 and the humidifying structure 16;

[0053] The chambers 11 are respectively communicated with the exhaust port of the humidifying structure 16 and the ventilation device 17, and the ventilation device 17 is also provided with a first exhaust port communicated with the carbon dioxide treatment cabin 14 and a second exhaust port communicated with the condensing pipeline 15.

[0054] It needs explanation that the fresh-keeping compartment further has a main control unit (not shown, same below) electrically connected with the carbon dioxide treatment cabin 14, the humidifying structure 16 and the ventilation equipment 17. The refrigeration air duct 13 is connected with the refrigeration system of the refrigerator provided with the fresh-keeping compartment, and the refrigeration air duct 13 is a channel for guiding the cold air to flow in the refrigerator, so as to ensure that the cold air can be evenly distributed in different compartments of the refrigerator, thereby achieving ideal temperature control.

[0055] When the drawer 12 is put into fruits and vegetables and sent into the compartment 11 for carbon dioxide fresh-keeping, in order to ensure that the carbon dioxide concentration in the compartment 11 is kept in a condition suitable for fresh-keeping of fruits and vegetables, referring to the attached Figure 6 , the embodiment further has a carbon dioxide sensor 19 arranged on the compartment 11 for detecting the carbon dioxide concentration in the compartment 11 at any time; and the carbon dioxide sensor 19 is electrically connected with the main control unit.

[0056] When the compartment 11 stores fruits and vegetables and performs fresh-keeping, the humidifying structure 16 is in a starting state, so as to ensure that the humidity in the compartment 11 is in a high-humidity environment (humidity > 80%); and the fresh-keeping compartment also needs to keep a lower temperature while performing fresh-keeping, so that the refrigeration air duct 13 circulates cold air, and the temperature of the cold air is lower than that in the compartment 11.

[0057] Thus, when the carbon dioxide sensor 19 detects that the concentration in compartment 11 is lower than the preset valley concentration, it sends a first warning signal to the main control unit. The main control unit then activates the ventilation equipment 17, which draws the high-humidity air from compartment 11 into the carbon dioxide treatment chamber 14 through its exhaust vent. This causes the humidified adsorption layer 141 in the carbon dioxide treatment chamber 14 to release carbon dioxide, which then passes through the humidification structure 16 back to compartment 11. This increases the carbon dioxide concentration in compartment 11 and maintains the humidity within it, preventing fruits and vegetables from aging and spoiling due to respiration, and ensuring the preservation effect of compartment 11. Conversely, when the carbon dioxide sensor 19 detects that the concentration in compartment 11 is higher than the preset peak concentration, it sends a second warning signal to the main control unit. The main control unit then activates the ventilation equipment 17, which draws the high-humidity air from compartment 11 into the carbon dioxide treatment chamber 14 through its exhaust vent. High-humidity air is drawn into the condenser pipe 15. Since the refrigeration duct 13 is connected to the condenser pipe 15, the pipe wall temperature of the condenser pipe 15 is consistent with the cold air temperature of the refrigeration duct 13. Therefore, when the high-humidity air in the condenser pipe 15 comes into contact with the cooler pipe wall of the condenser pipe 15, it will condense to form condensate. The condensate then flows through the condenser pipe 15 to the humidification structure 16. At the same time, the high-humidity air in the condenser pipe 15 becomes low-humidity air (humidity < 60%) due to condensation and is then transported to the carbon dioxide treatment chamber 14. The dehumidification material adsorption layer 141 adsorbs the carbon dioxide in the low-humidity air and then transports the low-humidity air to the humidification structure 16 and then to the compartment 11 to reduce the carbon dioxide concentration in the compartment 11 and maintain the humidity in the compartment 11, preventing fruits and vegetables from being damaged by high concentrations of CO2 poisoning and ensuring the preservation effect of the compartment 11.

[0058] Therefore, in this embodiment, the carbon dioxide concentration in the preservation compartment is maintained by the release-adsorption process of the carbon dioxide treatment chamber 14. The air in the carbon dioxide treatment chamber 14 must first pass through the humidification structure 16 before flowing into the compartment 11 to ensure that the air flowing into the compartment 11 is high humidity air. This is to prevent the air in the carbon dioxide treatment chamber 14 from directly entering the compartment 11, which would cause fluctuations in the humidity of the compartment 11 and affect the preservation effect of the compartment 11.

[0059] The compartment 11 adopts a direct cooling design. To ensure the cooling effect of the compartment 11 and the condensation effect of the condensation pipe 15, the top wall of the compartment 11, the cooling air duct 13 and the condensation pipe 15 are all made of heat-conducting materials.

[0060] See attached document Figures 2-3 5. The top wall of the compartment 11 is provided with a cooling air duct 13 that is closely fitted thereto, and the top wall or outer wall of the cooling air duct 13 is provided with a condensing pipe 15 that is closely fitted thereto.

[0061] Thus, when the refrigeration air duct 13 circulates the cold air, the temperature of the cold air is transferred to the top wall of the chamber 11 through the pipe wall of the refrigeration air duct 13, and then the top wall of the chamber 11 exchanges heat with the air in the chamber 11, so as to achieve the refrigeration effect of the chamber 11. At the same time, when the refrigeration air duct 13 circulates the cold air, the temperature of the cold air is transferred to the pipe wall of the condensation pipe 15 through the pipe wall of the refrigeration air duct 13, so that the temperature of the condensation pipe 15 approaches the temperature of the cold air in the refrigeration air duct 13. Thus, when the ventilation device 17 transports the high-humidity air in the chamber 11 to the condensation pipe 15, the high-humidity air is condensed to form low-humidity air due to the temperature difference between the condensation pipe 15 and the high-humidity air, and the condensed water in the condensation process is transported to the humidifying structure 16.

[0062] In order to further ensure the release-adsorption effect of carbon dioxide in the carbon dioxide treatment cabin 14, with reference to the accompanying drawings, Figure 4 The embodiment provides a specific structure of the carbon dioxide treatment cabin 14.

[0063] The wetting material adsorption layer 141 is a porous structure, and the carbon dioxide treatment cabin 14 is divided into a release cabin 142 and an adsorption cabin 143 through the wetting material adsorption layer 141. The two sides of the wetting material adsorption layer 141 are provided with heating grilles 144. The heating grilles 144 are electrically connected with the main control unit.

[0064] The release cabin 142 is communicated with the humidifying structure 16 and the first air outlet of the ventilation device 17 respectively, and the adsorption cabin 143 is communicated with the refrigeration air duct 13 and the condensation pipe 15 respectively.

[0065] It should be noted that the release cabin 142 is communicated with the humidifying space 161 of the humidifying structure 16 through the second pipe 145, the release cabin 142 is communicated with the first air outlet of the ventilation device 17 through the third pipe 171, and the second air outlet of the ventilation device 17 is communicated with the condensation pipe 15 through the fourth pipe 172. The porous wetting material adsorption layer 141 and the heating grilles 144 can ensure that the air in the adsorption cabin 143 can flow smoothly to the release cabin 142.

[0066] Therefore, when the carbon dioxide treatment cabin 14 needs to adsorb carbon dioxide, the air in the refrigeration air duct 13 directly enters the adsorption cabin 143, or the high-humidity air in the intermediate room 11 enters the adsorption cabin 143 after passing through the condensation pipeline 15, so that the wet material adsorption layer 141 absorbs the carbon dioxide in the adsorption cabin 143, and the main control unit starts the heating grid 144 and makes the heating temperature of the heating grid 144 reach a first preset temperature, so that the wet material adsorption layer 141 can absorb carbon dioxide at a higher efficiency; when the carbon dioxide treatment cabin 14 needs to release carbon dioxide, the high-humidity air in the intermediate room 11 directly enters the release cabin 142, so that the wet material adsorption layer 141 releases carbon dioxide in a high-humidity environment, and the main control unit starts the heating grid 144 and makes the heating temperature of the heating grid 144 reach a second preset temperature, so that the wet material adsorption layer 141 can release carbon dioxide at a higher efficiency.

[0067] And the first preset temperature is lower than the second preset temperature, and the first preset temperature in the embodiment is preferably 10-20℃, and the second preset temperature is preferably 20-25℃. Of course, the first preset temperature and the second preset temperature can also be selected as other values, which are not limited here, but the lower the temperature, the lower the adsorption or release rate of the wet material adsorption layer 141.

[0068] When the wet material adsorption layer 141 of the carbon dioxide treatment cabin 14 does not need to adsorb or needs to adsorb a small amount of carbon dioxide, the flow of cold air in the refrigeration air duct 13 flowing into the adsorption cabin 143 needs to be adjusted, and the refrigeration air duct 13 is provided with a refrigeration air outlet 131, and the refrigeration air outlet 131 communicates with the adsorption cabin 143 of the carbon dioxide treatment cabin 14. Figure 4

[0069] The refrigeration air outlet 131 is correspondingly provided with an adjusting structure 18 for controlling the flow of cold air entering the carbon dioxide treatment cabin 14 through the refrigeration air outlet 131; and the adjusting structure 18 is electrically connected with the main control unit.

[0070] To ensure that the adjusting mechanism 18 adjusts the flow of cold air flowing into the adsorption cabin 143, the refrigeration air duct 13 is provided with a refrigeration air outlet 131, and the refrigeration air outlet 131 communicates with the adsorption cabin 143 of the carbon dioxide treatment cabin 14. Figure 4 The embodiment provides an adjusting mechanism 18, which specifically comprises:

[0071] The adjusting structure 18 comprises a guide rail 181, a baffle 182 and a driving device (not shown, the same below).

[0072] ​The adsorption cabin 143 of the carbon dioxide treatment cabin 14 is provided with a guide rail 181 on the side wall on both sides of the refrigeration air outlet 131, and each guide rail 181 is slidably connected with a baffle plate 182 matched with the refrigeration air outlet 131, and each baffle plate 182 is further connected with the output end of the driving device.

[0073] Therefore, when the adsorption cabin 143 does not need too much cold air, the master control unit starts the two driving devices, and each driving device controls the corresponding baffle plate 182 to move along the guide rail 181 towards each other, so that the two baffle plates 182 gradually cover the refrigeration air outlet 131, thereby controlling the flow of cold air from the refrigeration air duct 13 into the adsorption cabin 143.

[0074] In other embodiments (not shown in the drawings), the adjusting structure 18 includes the guide rail 181, the baffle plate 182, and the driving device electrically connected with the master control unit.

[0075] The side wall of the adsorption cabin 143 on one side of the refrigeration air outlet 131 is provided with a guide rail 181, and the guide rail 181 is slidably connected with a baffle plate 182 matched with the refrigeration air outlet 131, and one end of the baffle plate 182 is further connected with the output end of the driving device.

[0076] In this way, the master control unit can control the baffle plate 182 to slide along the guide rail 181 by the driving device to cover the refrigeration air outlet 131, thereby preventing the cold air in the refrigeration air duct 13 from entering the adsorption cabin 143.

[0077] In other embodiments (not shown in the drawings), the adjusting structure 18 includes the guide rail 181, the baffle plate 182, and the driving device electrically connected with the master control unit. Figure 5 The humidifying structure 16 includes a humidifying space 161, a condensate water collecting box 162, and a humidifying fan 163, and the humidifying fan 163 is electrically connected with the master control unit.

[0078] The humidifying space 161 and the condensate water collecting box 162 are arranged side by side in one of the outer side walls of the chamber 11, and the wall surface between the humidifying space 161 and the condensate water collecting box 162 is further provided with the humidifying fan 163.

[0079] The humidifying fan 163 is used to evaporate the condensate water in the condensate water collecting box 162 and deliver it to the humidifying space 161.

[0080] It should be noted that the condensate pipeline 15 is communicated with the condensate water collecting box 162 through the fifth pipeline 153, so that the condensate water collecting box 162 stores the condensate water generated by the condensate pipeline 15.

[0081] In this way, when the fresh-keeping compartment is started, the main control unit starts the humidifying fan 163, and if the ventilation device 17 at this time sucks the high-humidity air in the compartment 11 into the condensing pipeline 15, the high-humidity air is condensed to form low-humidity air and is transported to the adsorption cabin 143, and the condensed water formed by condensation is transported to the condensed water collection box 162, then the humidifying fan 163 evaporates the condensed water in the condensed water collection box 162 into water vapor, and sends the water vapor into the humidifying space 161, and then the low-humidity air in the release cabin 142 enters the humidifying space 161 through the second pipeline 145, causing the low-humidity air mixed with water vapor to form high-humidity air to re-enter the compartment 11, thereby maintaining the high-humidity environment in the compartment 11, preventing the humidity in the compartment 11 from being reduced due to the process of the carbon dioxide absorbing layer 141 absorbing carbon dioxide, affecting the preservation effect; and in this way, the humidifying structure 16 can also realize the reuse of the condensed water.

[0082] To ensure that the low-humidity air in the condensing pipeline 15 can mostly enter the adsorption cabin 143, and reduce the situation that the low-humidity air enters the compartment 11 through the fifth pipeline 153, with reference to the accompanying drawings, Figure 2 and 6 The condensing pipeline 15 is communicated with the adsorption cabin 143 of the carbon dioxide treatment cabin 14 through the first pipeline 151, and the first pipeline 151 is provided with a gas pump 152 electrically connected with the main control unit, and the gas pump 152 is used to suck the gas in the condensing pipeline 15 into the adsorption cabin 143.

[0083] In other embodiments, with reference to the accompanying drawings, Figure 7 To ensure that the low-humidity air transported by the condensing pipeline 15 to the adsorption cabin 143 has a humidity less than 60%, the condensing pipeline 15 is provided with a humidity sensor 154 on the wall close to the first pipeline 151, the first pipeline 151 is provided with a gas pump 152 on the side close to the adsorption cabin 143, and the first pipeline 151 is provided with a control valve 155 on the other side close to the condensing pipeline 15, and the humidity sensor 154 and the control valve 155 are electrically connected with the main control unit.

[0084] In this way, when the humidity sensor 154 detects that the humidity of the air in the condensing pipeline 15 is less than 60%, the main control unit makes the control valve 155 in a closed state, at this time, the condensing pipeline 15 can only pass through the fifth pipeline 153, the condensed water collection box 162, the humidifying space 161 in turn, and finally enter the compartment 11. When the humidity sensor 154 detects that the humidity of the air in the condensing pipeline 15 is less than 60%, the main control unit makes the control valve 155 in an open state, and the main control unit also starts the gas pump 152 to suck the gas in the condensing pipeline 15 to the adsorption cabin 143.

[0085] Wherein, in order to ensure that the wet material adsorption layer 141 releases and adsorbs carbon dioxide through humidity, the wet material adsorption layer 141 is made of strong base ion exchange resin, and the strong base ion exchange resin includes quaternary ammonium ion (NR 4+ )Functional group grafted mesoporous polymer, amine group anion exchange resin is dispersed in at least one of polypropylene sheet, phosphoric acid group ion exchange resin (IER-PO4) and bamboo fiber quaternary ammonium material. Embodiment 2

[0086] The utility model discloses still propose a kind of refrigerator, the refrigerator includes above-mentioned fresh-keeping compartment.

[0087] In this way, when the refrigerator is started and fruits and vegetables are placed in the fresh-keeping compartment for preservation, the air in the carbon dioxide treatment cabin 14 needs to pass through the humidifying structure 16 first before entering the compartment 11 to maintain a high-humidity environment in the compartment 11. When the carbon dioxide concentration in the compartment 11 is lower than the preset valley concentration, the main control unit will transport the high-humidity air in the compartment 11 to the carbon dioxide treatment cabin 14, and then make the carbon dioxide treatment cabin 14 release carbon dioxide to ensure the carbon dioxide concentration in the compartment 11 and ensure the preservation effect of the compartment 11. When the carbon dioxide concentration in the compartment 11 is higher than the preset peak concentration, the main control unit will first transport the high-humidity air in the compartment 11 to the condensing pipeline 15. The condensing pipeline 15 will condense the high-humidity air (humidity > 80%) into low-humidity air (humidity < 60%) and then transport it to the carbon dioxide treatment cabin 14, and then make the carbon dioxide treatment cabin 14 adsorb carbon dioxide to ensure the carbon dioxide concentration in the compartment 11 and ensure the preservation effect of the compartment 11.

[0088] In this embodiment, the control method of the refrigerator is as follows:

[0089] When the refrigerator is started and fruits and vegetables are placed in the fresh-keeping compartment for preservation, the main control unit detects the carbon dioxide concentration in the compartment 11 through the carbon dioxide sensor 19.

[0090] If the carbon dioxide concentration in the compartment 11 is ≥ the preset peak concentration, the main control unit will control the ventilation equipment 17 to transport the high-humidity air in the compartment 11 to the condensing pipeline 15. The condensing pipeline 15 can condense the high-humidity air into low-humidity air and condensed water. The low-humidity air is sent to the adsorption cabin 143, and at the same time, the main control unit starts the heating grid 144 and makes the heating temperature of the heating grid 144 reach the second preset temperature, so that the wet material adsorption layer 141 can absorb carbon dioxide more efficiently. The condensed water is transported to the humidifying structure 16.

[0091] If the carbon dioxide concentration in the chamber 11 is less than or equal to the preset valley concentration, the main control unit controls the ventilation device 17 to pump the high-humidity air in the chamber 11 to the release cabin 142, and the main control unit starts the heating grid 144 and makes the heating temperature of the heating grid 144 reach the first preset temperature, so that the wet material adsorption layer 141 can release carbon dioxide to the chamber 11 with higher efficiency.

[0092] If the carbon dioxide concentration in the chamber 11 is between the preset valley concentration and the preset peak concentration, it indicates that the carbon dioxide concentration in the chamber 11 is in the most suitable range, at this time the main control unit does not start the heating grid 144, and the temperature of the refrigeration air duct 13 and the carbon dioxide treatment cabin 14 at this time is about [1℃, 3℃], which leads to the low efficiency of the wet material adsorption layer 141 in adsorbing carbon dioxide, which means that the wet material adsorption layer 141 cannot absorb or release carbon dioxide at this time.

[0093] It should be noted that, for the sake of understanding, the present embodiment proposes a fresh-keeping chamber to set the value range of the corresponding fresh-keeping carbon dioxide concentration according to the type of stored fruits and vegetables, specifically:

[0094] When the fresh-keeping chamber stores leafy vegetables, the carbon dioxide concentration in the chamber 11 is in the range of [2%, 6%]; when the fresh-keeping chamber stores fruits, the carbon dioxide concentration in the chamber 11 is in the range of [4%, 7%]; when the fresh-keeping chamber stores melons and fruits, the carbon dioxide concentration in the chamber 11 is in the range of [5%, 8%]; and when the fresh-keeping chamber stores at least two of leafy vegetables, fruits or melons and fruits, the valley concentration of carbon dioxide in the chamber 11 is selected as the maximum value of the valley concentration corresponding to the type of fruits and vegetables, and the peak concentration of carbon dioxide in the chamber 11 is selected as the minimum value of the peak concentration corresponding to the type of fruits and vegetables, for example, the fresh-keeping chamber stores leafy vegetables and fruits, and the carbon dioxide concentration in the chamber 11 is in the range of [4%, 6%].

[0095] Of course, the value of the carbon dioxide concentration can also be selected as other values according to actual conditions, which is not limited herein.

[0096] It should be noted that, in order to ensure that the wet material adsorption layer 141 can adsorb a certain amount of carbon dioxide, the refrigerator needs to be started for a preset time, so that the wet material adsorption layer 141 can adsorb a certain amount of carbon dioxide, and during the preset time of starting the refrigerator, the fresh-keeping chamber is prohibited to store fruits and vegetables.

[0097] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. Fresh food compartment, comprising at least one compartment (11) and a drawer (12) matching said compartment (11), characterized in that, The chamber (11) is provided with a refrigeration air duct (13), a carbon dioxide treatment cabin (14) with a built-in humidity changing material adsorption layer (141), a condensation pipeline (15), a humidification structure (16) and a ventilation device (17); The condensation pipeline (15) is installed on the refrigeration air duct (13) and communicates with the humidification structure (16) and the carbon dioxide treatment cabin (14) respectively, and the carbon dioxide treatment cabin (14) also communicates with the refrigeration air duct (13) and the humidification structure (16) respectively; The chamber (11) communicates with the humidification structure (16) and the ventilation device (17) respectively, and the ventilation device (17) also communicates with the carbon dioxide treatment cabin (14) and the condensation pipeline (15) respectively.

2. The fresh food compartment according to claim 1, characterized in that The humidity changing material adsorption layer (141) is of a porous structure, and the carbon dioxide treatment cabin (14) is divided into a release cabin (142) and an adsorption cabin (143) by the humidity changing material adsorption layer (141); both sides of the humidity changing material adsorption layer (141) are provided with heating grilles (144); The release cabin (142) communicates with the humidification structure (16) and the ventilation device (17) respectively, and the adsorption cabin (143) communicates with the refrigeration air duct (13) and the condensation pipeline (15) respectively.

3. The fresh food compartment according to claim 1 or 2, characterized in that The refrigeration air duct (13) is provided with a refrigeration air outlet (131) which communicates with the carbon dioxide treatment cabin (14); The refrigeration air outlet (131) is correspondingly provided with an adjusting structure (18) for controlling the air flow entering the carbon dioxide treatment cabin (14) from the refrigeration air outlet (131).

4. The fresh food compartment according to claim 3, characterized in that The adjusting structure (18) comprises a guide rail (181), a baffle (182) and a driving device; Both sides of the side wall of the carbon dioxide treatment cabin (14) corresponding to the refrigeration air outlet (131) are provided with guide rails (181), each of the guide rails (181) is slidably connected with a baffle (182) matched with the refrigeration air outlet (131), and each of the baffles (182) is further connected with the output end of the driving device.

5. The fresh food compartment according to claim 1, characterized in that, The top wall of the chamber (11), the refrigeration air duct (13) and the condensation pipeline (15) are all made of heat-conducting material; The top wall of the chamber (11) is provided with the refrigeration air duct (13) closely attached thereto, and the top wall or the outer side wall of the refrigeration air duct (13) is provided with the condensation pipeline (15) closely attached thereto.

6. The fresh food compartment according to claim 1, characterized in that The humidification structure (16) comprises a humidification space (161), a condensate water collecting box (162) and a humidification fan (163); One of the outer side walls of the chamber (11) is provided with the humidification space (161) and the condensate water collecting box (162) adjacent to each other in parallel, and the wall surface between the humidification space (161) and the condensate water collecting box (162) is further provided with the humidification fan (163); The humidification fan (163) is used for evaporating the condensate water in the condensate water collecting box (162) and conveying it to the humidification space (161).

7. The fresh food compartment according to claim 1, characterized in that, The chamber (11) is provided with a carbon dioxide sensor (19) for detecting the carbon dioxide concentration in the chamber (11).

8. The fresh food compartment according to claim 1, characterized in that The condensing pipeline (15) is communicated with the carbon dioxide treatment cabin (14) through a first pipeline (151), and the first pipeline (151) is provided with an air pump (152) for extracting the gas in the condensing pipeline (15) into the carbon dioxide treatment cabin (14).

9. The fresh food compartment according to claim 2, characterized in that, The wetting material adsorption layer (141) is made of strong base ion exchange resin, and the strong base ion exchange resin includes at least one of quaternary ammonium ion functional group grafted mesoporous polymer, amine group anion exchange resin dispersed in polypropylene sheet, phosphoric acid group ion exchange resin and bamboo fiber quaternary ammonium material.

10. A refrigerator characterized by The refrigerator comprises the fresh-keeping chamber according to any one of claims 1-9.

Images