CN211876472U - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN211876472U CN211876472U CN201922359634.7U CN201922359634U CN211876472U CN 211876472 U CN211876472 U CN 211876472U CN 201922359634 U CN201922359634 U CN 201922359634U CN 211876472 U CN211876472 U CN 211876472U
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Abstract
The application discloses refrigerator, this refrigerator includes first fresh keeping room, adsorption tower, valve and air pump. The air inlet of the air pump is communicated with the first fresh keeping chamber, the air outlet of the air pump is communicated with the air inlet of the adsorption tower through the air inlet channel of the valve, and the air inlet of the adsorption tower is communicated with the first fresh keeping chamber through the air outlet channel of the valve; the valve air inlet channel is opened, so that the air pump transmits the air in the first fresh keeping chamber to the adsorption tower in a pressurized manner, the adsorption tower filters oxygen in the air, the oxygen is discharged from an air outlet of the adsorption tower, and residual air is adsorbed; and closing the air inlet channel of the valve to stop the air pump from pressurizing and transmitting air to the adsorption tower, releasing residual air by the adsorption tower, and discharging the residual air to the first fresh keeping chamber through the air inlet of the adsorption tower and the air outlet channel of the valve. This application can make the oxygen content of first fresh-keeping room reduce, improves fresh-keeping effect.
Description
Technical Field
The application relates to the field of household appliances, in particular to a refrigerator.
Background
In the fruit and vegetable fresh-keeping in long-distance transportation and storage, oxygen reduction, nitrogen filling and fresh keeping are widely applied at home and abroad all the time. However, in the field of household appliances, it has not been particularly effective because of technical limitations, such as insignificant reduction in oxygen content.
SUMMERY OF THE UTILITY MODEL
The application provides a refrigerator to solve among the prior art first freshness preservation room oxygen content in the refrigerator and reduce unobvious technical problem.
In order to solve the technical problem, one technical scheme adopted by the application is to provide a refrigerator, wherein the refrigerator comprises a first fresh-keeping chamber, an adsorption tower, a valve and an air pump; the air inlet of the air pump is communicated with the first fresh keeping chamber, the air outlet of the air pump is communicated with the air inlet of the adsorption tower through the air inlet channel of the valve, and the air inlet of the adsorption tower is communicated with the first fresh keeping chamber through the air outlet channel of the valve;
the valve air inlet channel is opened, so that the air pump transmits the air in the first fresh keeping chamber to the adsorption tower in a pressurized manner, the adsorption tower filters oxygen in the air, the oxygen is discharged from an air outlet of the adsorption tower, and residual air is adsorbed; and closing the air inlet channel of the valve to stop the air pump from pressurizing and transmitting air to the adsorption tower, releasing residual air by the adsorption tower, and discharging the residual air to the first fresh keeping chamber through the air inlet of the adsorption tower and the air outlet channel of the valve.
The number of the adsorption towers is at least two, and the at least two adsorption towers are divided into a first adsorption tower and a second adsorption tower; the valve is provided with a first air inlet channel and a first air outlet channel corresponding to each first adsorption tower, and is provided with a second air inlet channel and a second air outlet channel corresponding to each second adsorption tower; and alternately controlling the opening of the first air inlet channel and the closing of the second air inlet channel in the valve, or closing the first air outlet channel and opening the second air inlet channel.
Wherein, the quantity of adsorption tower is two, and the valve is two five-way solenoid valves.
Wherein, two at least adsorption towers set up side by side, and the air inlet of all adsorption towers all sets up towards same direction.
Wherein, zeolite molecular sieve particles are arranged in the adsorption tower, and the size of the zeolite molecular sieve particles is 0.4 mm-0.8 mm; the air pump pressurizes the air to 0.12MPa to 0.2 MPa.
Wherein the ratio of the transmission flow per second of the air pump to the volume of the adsorption tower is 1.2-2.2.
Wherein the adsorption tower is cylindrical, the diameter of the adsorption tower is 20mm-30mm, and the height of the adsorption tower is 150mm-300 mm; the transmission flow of the air pump is 5L/min-15L/min.
The refrigerator comprises a second fresh-keeping chamber, and an air outlet of the adsorption tower is communicated to the second fresh-keeping chamber.
Wherein, first freshness preservation room is provided with first sensor for detect the oxygen content of first freshness preservation room, first sensor connection air pump.
Wherein, be provided with the second sensor on the first fresh-keeping room for whether detect first fresh-keeping room is opened, the air pump is connected to the second sensor.
According to the air-saving fresh-keeping device, the adsorption tower is controlled to be in an adsorption or desorption state through the operation of the valve and the air pump, when the adsorption tower is in the adsorption state, the adsorption tower filters oxygen in air, the oxygen is discharged from the air outlet of the adsorption tower and adsorbs residual air, when the adsorption tower is in the desorption state, the residual air is released by the adsorption tower and is discharged to the first fresh-keeping chamber through the air inlet of the adsorption tower and the air outlet channel of the valve, in the embodiment, the air in the first fresh-keeping chamber is pumped out and filtered, the oxygen in the first fresh-keeping chamber is discharged, and the residual air is returned, so that the oxygen content in the first fresh-keeping chamber is reduced, namely, the oxygen content in the first fresh-keeping chamber can be effectively reduced through the air pump, the valve and; and the total content of the air in the first fresh-keeping room can be reduced, the air in the first fresh-keeping room is in a negative pressure state, the negative pressure fresh keeping is realized, and the double fresh-keeping effects of oxygen control fresh keeping and negative pressure fresh keeping can be realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that 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 inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a refrigerator according to another embodiment of the present application;
FIG. 3 is a schematic view of an operating state of a refrigerator according to another embodiment of the present application;
FIG. 4 is a schematic view of another operation state of a refrigerator according to another embodiment of the present application;
FIG. 5 is a schematic view illustrating a structure of a valve in a refrigerator according to still another embodiment of the present application;
fig. 6 is a schematic perspective view of a refrigerator according to another embodiment of the present application;
fig. 7 is a partial schematic view of the refrigerator shown in fig. 6.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
Referring to fig. 1, the refrigerator 100 includes a first fresh food compartment 110, an adsorption tower 120, a valve 130, and an air pump 140. An air inlet of the air pump 140 is communicated with the first fresh keeping chamber 110. The air outlet of the air pump 140 is communicated with the air inlet of the adsorption tower 120 through the air inlet passage of the valve 130. The inlet of the adsorption tower 120 is connected to the first fresh keeping chamber 110 through the outlet channel of the valve 130. The air inlet channel of the valve 130 is opened, so that the air pump 140 pressurizes and transmits the air in the first fresh keeping chamber 110 to the adsorption tower 120, the adsorption tower 120 filters oxygen in the air, the oxygen is discharged from the air outlet of the adsorption tower 120, and residual air is adsorbed; the inlet passage of the valve 130 is closed, so that the air pump 140 stops pressurizing and transferring air to the adsorption tower 120, and the residual air released by the adsorption tower 120 is discharged to the first fresh keeping chamber 110 through the inlet of the adsorption tower 120 and the outlet passage of the valve 130.
In the process of realizing freshness preservation of the refrigerator in the embodiment, air in the first freshness preservation chamber 110 is pumped out for deoxidation and filtration, and then the residual gas with oxygen removed is returned to the first freshness preservation chamber 110, so that the oxygen content in the first freshness preservation chamber 110 is reduced through the process, and oxygen control and freshness preservation can be realized; and the total content of the air in the first fresh-keeping chamber 110 can be reduced, so that the air in the first fresh-keeping chamber 110 is in a negative pressure state, the negative pressure fresh keeping is realized, and the double fresh-keeping effects of oxygen control fresh keeping and negative pressure fresh keeping can be realized.
In this embodiment, the valve 130 includes independent inlet and outlet channels, so that the valve 130 includes at least 3 ports. As shown in fig. 1, the 3 ports are divided into at least a first port 131, a second port 132, and a third port 133. The first port 131 of the valve 130 communicates with the gas inlet of the adsorption tower 120. The second port 132 of the valve 130 is communicated with the air outlet of the air pump 140. An air inlet passage is formed between the first port 131 and the second port 132 of the valve 130, so that the air outlet of the air pump 140 can be communicated with the air inlet of the adsorption tower 120 through the air inlet passage of the valve 130. In addition, the third port 133 of the valve 130 is connected to the first fresh keeping chamber 110, and an air outlet channel is formed between the third port 133 of the valve 130 and the first port 131 of the valve 130, so that the air inlet of the adsorption tower 120 can be connected to the first fresh keeping chamber 110 through the air outlet channel of the valve 130. The switching of the gas flow direction can be achieved by the valve 130.
In another embodiment, as shown in FIG. 2, the valve 130 may also include 4 ports. The 4 ports may be divided into a first port 131, a second port 132, a third port 133, and a fourth port 134. The gas inlet of the adsorption tower 120 communicates with the first port 131 and the fourth port 134. The second port 132 of the valve 130 is communicated with the air outlet of the air pump 140, and an air inlet passage is formed between the first port 131 of the valve 130 and the second port 132 of the valve 130. The third port 133 of the valve 130 is connected to the first fresh-keeping chamber 110, and an air outlet channel is formed between the fourth port 134 of the valve 130 and the third port 133 of the valve 130. Therefore, the valve 130 can switch the flowing direction of the gas only by switching the opening and closing of the inlet channel and the outlet channel, so as to control the gas flowing into and out of the first fresh keeping chamber 110.
The number of the adsorption towers 120 may be at least two, and the at least two adsorption towers 120 may continuously discharge oxygen from the air in the first fresh keeping chamber 110, and may continuously desorb the residual gas adsorbed by the adsorption towers 120 into the first fresh keeping chamber 110, thereby controlling the oxygen content in the first fresh keeping chamber 110 with high efficiency and low time consumption. Specifically, the at least two adsorption towers 120 may be divided into a first adsorption tower 121 and a second adsorption tower 122.
Accordingly, the valve 130 has a first inlet channel and a first outlet channel corresponding to each first adsorption tower 121. Each second adsorption tower 122 has a second gas inlet channel and a second gas outlet channel. The first air inlet channel and the second air inlet channel in the valve 130 are alternately controlled to be opened and closed, or the first air outlet channel and the second air inlet channel are closed and opened, so that when one of the first adsorption tower 121 and the second adsorption tower 122 is used for adsorption, residual air desorbed from the other of the first adsorption tower 121 and the second adsorption tower 122 flows into the first fresh keeping chamber 110 through the air outlet channel, and the oxygen content in the first fresh keeping chamber 110 is controlled with high efficiency and low consumption.
At least the first port 131 of the valve 130 and the third port 133 of the valve 130 may be provided in plurality. The number of the first ports 131 and the number of the third ports 133 of the valve 130 may be the same as the number of the adsorption columns 120. The gas inlet of each adsorption tower 120 may be connected to a first port 131. An air outlet channel can be formed between each first port 131 and the corresponding third port 133. All of the third ports 133 communicate with the first fresh keeping chamber 110. In addition, one second port 132 of the valve 130 may be provided, and an intake passage may be formed between each first port 131 and the second port 132.
In yet another embodiment, as shown in fig. 3 and 4, the number of the adsorption columns 120 is two. The valve 130 is a two-position five-way solenoid valve, and the opening and closing of the first air outlet channel, the second air outlet channel, the first air inlet channel and the second air inlet channel inside the valve 130 can be freely switched by the two-position five-way solenoid valve, so that the switching of the working states of the two adsorption towers 120 is realized, and therefore, when one of the first adsorption tower 121 and the second adsorption tower 122 is used for adsorption, the residual air desorbed from the other of the first adsorption tower 121 and the second adsorption tower 122 flows into the first fresh room 110 through the air outlet channel, so that the operation of the valve 130 and the air pump 140 can be controlled to continuously discharge oxygen from the air in the first fresh room 110, and the residual air adsorbed by the adsorption tower 120 can be continuously desorbed and transmitted into the first fresh room 110, thereby controlling the oxygen content in the first fresh room 110 with high efficiency and low consumption.
As shown in fig. 5, the two-position, five-way solenoid valve may include two first ports 131, one second port 132 and two third ports 133. One of the first ports 131 communicates with the gas inlet of the first adsorption tower 121, and the other first port 131 communicates with the gas inlet of the second adsorption tower 122. A first air outlet channel is formed between the first port 131 connected with the air inlet of the first adsorption tower 121 and the corresponding third port 133. A second air outlet channel is formed between the first port 131 connected with the air inlet of the second adsorption tower 122 and the corresponding third port 133. All of the third ports 133 communicate with the first fresh keeping chamber 110. A first intake passage is formed between the first port 131 connected to the intake port of the first adsorption tower 121 and the second port 132. A second intake passage is formed between the first port 131 and the second port 132 connected to the intake port of the second adsorption tower 122.
In the present embodiment, the adsorption tower 120 may be provided therein with an adsorption substance. When the adsorption material provided in the adsorption tower 120 is in an adsorption state, the adsorption capacity of the adsorption material for nitrogen is greater than the adsorption capacity for oxygen. The adsorbent material provided in the adsorption column 120 may be zeolite molecular sieve particles. The polarity of nitrogen in the air is greater than that of oxygen, the zeolite molecular sieve has different adsorption capacities for oxygen and nitrogen in the air, nitrogen can be preferentially adsorbed from the air through the zeolite molecular sieve, and oxygen in the air can be filtered out, so that the air enters from the air inlet of the adsorption tower 120, and the oxygen content in the air flowing out of the adsorption tower 120 exceeds the oxygen content in the air through the adsorption of the zeolite molecular sieve. And then the oxygen content in the gas that follow zeolite molecular sieve desorption is obviously less than the oxygen content in the air, and the gas that zeolite molecular sieve desorption was gone out is low oxygen content gas promptly, through transmitting the gas that zeolite molecular sieve desorption goes out to first fresh keeping room 110 in, can reduce the content of oxygen in first fresh keeping room 110, improves fresh-keeping effect. The zeolite molecular sieve particles may have a size of 0.4mm to 0.8mm, specifically 0.5mm, 0.6mm, 0.7 mm. Of course, in other embodiments, the adsorption material disposed in the adsorption tower 120 may also be a silicoaluminophosphate molecular sieve.
That is, the present embodiment controls the oxygen content of the first fresh compartment 110 by adsorption and desorption of the adsorption tower 120, and since the adsorbent has a characteristic that the adsorption amount increases with an increase in the partial pressure of the adsorbed component, the present embodiment accomplishes adsorption and desorption by pressure change to achieve air separation, that is, to place the adsorption tower 120 in an adsorption or desorption state by pressure change. Specifically, in the embodiment, the air pump 140 increases the pressure of the air to change the air into compressed air, and then the compressed air is introduced into the adsorption tower 120, so that the pressure in the adsorption tower 120 is increased in a phase-changing manner, and thus the adsorption tower 120 is in an adsorption stage, even if the adsorption tower 120 filters out at least part of the oxygen in the compressed air, when the air pump 140 does not transmit the compressed air into the adsorption tower 120 any more, the pressure in the adsorption tower 120 is reduced, the adsorption capacity of the adsorption tower 120 on substances such as nitrogen and the like adsorbed by the adsorption tower 120 is reduced, the adsorption tower 120 desorbs the substances adsorbed in the adsorption tower 120, and the substances flow into the first fresh-keeping chamber 110 through the air inlet of the adsorption tower 120 and the air outlet channel of the valve 130, that is, the residual air desorbed from the adsorption tower 120 flows into the first fresh-keeping chamber 110, so that the oxygen content in the first fresh-keeping chamber 110 is; and the total content of the air in the first fresh-keeping chamber 110 can be reduced, so that the air in the first fresh-keeping chamber 110 is in a negative pressure state, the negative pressure fresh keeping is realized, and the double fresh-keeping effects of oxygen control fresh keeping and negative pressure fresh keeping can be realized. The air pump 140 pressurizes air to 0.12MPa to 0.2MPa in this embodiment, corresponding to the particle size of the zeolite molecules.
The particle size of the zeolite molecular sieve corresponds to the pressurization of the air by the air pump 140, so that the air pump 140 can be miniaturized, the power consumption of the refrigerator 100 can be reduced, and the noise can be reduced. If the particle size of the zeolite molecular sieve is too small, the gas flow transmission resistance becomes too large, and the pressure needs to be increased appropriately. Therefore, the particle size of the zeolite molecules filled in the adsorption tower 120 should be relatively uniform and moderate, for example, the size of the zeolite molecular sieve particles is set to 0.4 mm-0.8 mm, so that excessive pressure of the air pump 140 on the air is not required, the air pump 140 can be miniaturized, the power consumption of the refrigerator 100 is reduced, and the noise is reduced.
In the present embodiment, the adsorption tower 120 may have a cylindrical shape. Of course, the adsorption tower 120 may have other regular or irregular shapes such as a cube and a rectangular parallelepiped.
The adsorption capacity of the adsorption column 120 can be controlled by controlling the size of the adsorption column 120, and the size of the adsorption column 120 can be controlled within a proper range to ensure the adsorption capacity of the adsorption column 120 and maintain a small volume. Specifically, the diameter of the adsorption tower 120 may range from 20mm to 30 mm. The height of the adsorption tower 120 may range from 150mm to 300 mm. Alternatively, the diameter of the adsorption column 120 may be 20mm, 22mm, 24mm, 25mm, or 27 mm. The height of the adsorption column 120 may be 160mm, 186mm, 200mm, 230mm, or 250 mm.
The delivery flow rate of the air pump 140 is designed correspondingly to the small size of the adsorption tower 120. The contact time of the molecules in the compressed air with the adsorbent in the adsorption tower 120 can be changed by changing the delivery flow rate of the air pump 140, thereby changing the adsorption efficiency of the adsorption tower 120 on the compressed air. The transmission speed is too high, so that the contact time of molecules in the compressed air and the adsorption substance is too short, the adsorption of gas is not facilitated, and the adsorption rate is reduced; too low a transfer speed increases the capacity of the adsorption tower 120. Therefore, the delivery flow rate is controlled within a certain range, and in the embodiment, the delivery flow rate of the air pump 140 is 5L/min to 15L/min, specifically 7L/min, 9L/min or 11L/min. Of course, in order to maintain the adsorption efficiency of the adsorption tower 120, the ratio of the delivery flow rate of the air pump 140 per second to the volume of the adsorption tower 120 may be 1.2 to 2.2.
The first fresh keeping chamber 110 may be a closed space, so that the air in the first fresh keeping chamber 110 is not communicated with the atmosphere, and further, at least part of oxygen in the air in the first fresh keeping chamber 110 is removed, and the air after the oxygen removal is returned to the first fresh keeping chamber 110 again, so that the oxygen content of the first fresh keeping chamber 110 can be reduced, and oxygen control and fresh keeping can be realized; the total content of air in the first fresh-keeping chamber 110 can be reduced, the air in the first fresh-keeping chamber 110 is in a negative pressure state, the negative pressure fresh keeping is realized, the double fresh-keeping effects of oxygen control fresh keeping and negative pressure fresh keeping can be realized, and the better fresh-keeping effect is realized.
One or more first fresh keeping chambers 110 may be provided. The first fresh food compartment 110 may be a fresh food compartment for storing food materials such as vegetables and fruits. By controlling the oxygen content of the first fresh-keeping chamber 110 at a low level, the respiration rate of the food material stored therein can be reduced, the metabolism of the food material can be inhibited, the fresh-keeping effect can be achieved, and the deterioration and the propagation of bacteria can be inhibited.
The first fresh keeping chamber 110 may be provided with a first sensor. The first sensor may be configured to detect an oxygen content of the first fresh keeping chamber 110, and when the oxygen content of the first fresh keeping chamber 110 detected by the first sensor is higher than a first threshold, the air pump 140 and the valve 130 may be controlled, and the air pump 140, the valve 130 and the adsorption tower 120 jointly control the oxygen content of the first fresh keeping chamber 110, so as to reduce the oxygen content of the first fresh keeping chamber 110. When the oxygen content detected by the second sensor is lower than the second threshold, the air pump 140 may be controlled to stop operating, i.e., the oxygen content of the first fresh keeping chamber 110 is no longer controlled by the air pump 140, the valve 130 and the adsorption tower 120. The first sensor is connected to the air pump 140. The first sensor may also be connected to the valve 130.
The first fresh keeping chamber 110 may be provided with a second sensor. The second sensor is used to detect whether the first fresh keeping chamber 110 is opened. The air pump 140 and the valve 130 may be controlled when the second sensor detects that the first fresh keeping chamber 110 is opened, and the oxygen content in the first fresh keeping chamber 110 is controlled by the cooperation of the air pump 140, the valve 130 and the adsorption tower 120, so that the oxygen content in the first fresh keeping chamber 100 is decreased. The second sensor is connected to the air pump 140. The first sensor may also be connected to the valve 130.
In this embodiment, the refrigerator 100 may further include a controller. The controller can be connected with the air pump 140 and the valve 130, and can control the operation of the air pump 140 and the opening and closing of the air inlet channel and the air outlet channel in the valve 130.
Further, the controller may be further connected to the first sensor for receiving data detected by the first sensor. Of course, the controller may also analyze whether it is necessary to control the oxygen content of the first fresh keeping chamber 110 through the air pump 140, the valve 130 and the adsorption tower 120 according to the detected data, and control the operation of the air pump 140 and the valve 130 according to the analyzed result.
Further, the controller may be further connected to a second sensor for receiving data detected by the second sensor. Of course, the controller may also analyze whether it is necessary to control the oxygen content of the first fresh compartment 110 through the air pump 140, the valve 130 and the adsorption tower 120 based on the data detected by the second sensor, and control the operation of the air pump 140 and the valve 130 based on the analyzed result.
In this embodiment, an air outlet switch is further disposed at the air outlet of the adsorption tower 120. When the adsorption tower 120 is in the adsorption state, the gas outlet switch is turned on, so that the gas that is not adsorbed by the adsorbed substances in the adsorption tower 120 can be discharged through the gas outlet of the adsorption tower 120. When the adsorption tower 120 is in the desorption state, the air outlet switch is closed, so that the gas desorbed from the adsorption tower 120 can only flow into the first fresh-keeping chamber 110 through the air inlet of the adsorption tower 120 and the air inlet channel of the valve 130, and the outside air can be prevented from flowing into the adsorption tower 120 through the air outlet of the adsorption tower 120, so that the outside air and the gas desorbed from the adsorption tower 120 can be prevented from flowing into the first fresh-keeping chamber 110 together, and the reduction efficiency of the oxygen content of the first fresh-keeping chamber 110 is ensured.
In this embodiment, the refrigerator 100 further includes a second fresh food compartment 150. The outlet of the adsorption tower 120 is communicated to the second fresh keeping compartment 150. That is, the second fresh keeping compartment 150 may receive the oxygen-enriched gas discharged from the adsorption tower 120, so that the oxygen content of the second fresh keeping compartment 150 is increased. The second fresh-keeping chamber 150 can be stored with meat food material, and the fresh-keeping colour of the meat stored in the second fresh-keeping chamber 150 can be guaranteed to be more bright by increasing the oxygen content in the chamber.
As shown in fig. 6 and 7, in particular, the first fresh keeping chamber 110 is disposed in the refrigerator 100 in a drawer manner, and the adsorption tower 120 and the valve 130 are disposed behind the first fresh keeping chamber 110, that is, the adsorption tower 120 and the valve 130 are disposed at a side of the first fresh keeping chamber 110 away from the door of the refrigerator 100, so that when the first fresh keeping chamber 110 is pulled open, the positions of the valve 130 and the adsorption tower 120 are not affected, and the connection relationship among the valve 130, the adsorption tower 120 and the air pump 140 is not affected. The air pump 140 is provided at the bottom of the refrigerator 100. The first fresh keeping chamber 110 and the air inlet of the air pump 140, the air outlet of the air pump 140 and the valve 130, and the adsorption tower 120 and the valve 130 are connected by air pipes, so that when the first fresh keeping chamber 110 is pulled open, the connection between the air outlets is not interfered. The trachea can be a soft glue trachea or a hard trachea.
Further, when the number of the adsorption towers 120 is two, in order to make the structural layout of the entire refrigerator 100 more compact, the adsorption towers 120 may be arranged side by side, and the air inlets of all the adsorption towers 120 are arranged toward the same direction.
In summary, in the process of achieving preservation in the refrigerator 100, the air in the first preservation chamber 110 is pumped out for deoxidation and filtration, and then the residual gas with oxygen removed is returned to the first preservation chamber 110, so that the oxygen in the first preservation chamber 110 is reduced through the process, and oxygen control preservation can be achieved; and the total content of the air in the first fresh-keeping chamber 110 can be reduced, so that the air in the first fresh-keeping chamber 110 is in a negative pressure state, the negative pressure fresh keeping is realized, and the double fresh-keeping effects of oxygen control fresh keeping and negative pressure fresh keeping can be realized.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. The refrigerator is characterized by comprising a first fresh-keeping chamber, an adsorption tower, a valve and an air pump; the air inlet of the air pump is communicated with the first fresh-keeping chamber, the air outlet of the air pump is communicated with the air inlet of the adsorption tower through the air inlet channel of the valve, and the air inlet of the adsorption tower is communicated with the first fresh-keeping chamber through the air outlet channel of the valve;
the valve air inlet channel is opened, so that the air pump transmits the air in the first fresh-keeping chamber to the adsorption tower in a pressurized manner, the adsorption tower filters oxygen in the air, the oxygen is discharged from an air outlet of the adsorption tower, and residual air is adsorbed; and closing the air inlet channel of the valve to enable the air pump to stop transmitting the air to the adsorption tower in a pressurizing manner, releasing the residual air by the adsorption tower, and discharging the residual air to the first fresh keeping chamber through the air inlet of the adsorption tower and the air outlet channel of the valve.
2. The refrigerator according to claim 1, wherein the number of the adsorption towers is at least two, and the at least two adsorption towers are divided into a first adsorption tower and a second adsorption tower; the valve is provided with a first air inlet channel and a first air outlet channel corresponding to each first adsorption tower, and is provided with a second air inlet channel and a second air outlet channel corresponding to each second adsorption tower; and alternately controlling the opening of the first air inlet channel and the closing of the second air inlet channel in the valve, or closing the first air outlet channel and opening the second air inlet channel.
3. The refrigerator as claimed in claim 2, wherein the number of the adsorption towers is two, and the valve is a two-position five-way solenoid valve.
4. The refrigerator according to claim 2, wherein the at least two adsorption towers are arranged side by side, and air inlets of all the adsorption towers are arranged facing the same direction.
5. The refrigerator of claim 1, wherein zeolite molecular sieve particles are disposed in the adsorption tower, and the size of the zeolite molecular sieve particles is 0.4mm to 0.8 mm; the air pump pressurizes the air to 0.12 MPa-0.2 MPa.
6. The refrigerator according to claim 5, wherein a ratio of a transfer flow rate of the air pump per second to a volume of the adsorption tower is 1.2 to 2.2.
7. The refrigerator according to claim 6, wherein the adsorption tower is cylindrical, and has a diameter of 20mm to 30mm and a height of 150mm to 300 mm; the transmission flow of the air pump is 5L/min-15L/min.
8. The refrigerator of claim 1, wherein the refrigerator includes a second fresh food compartment, and wherein the air outlet of the adsorption tower is communicated to the second fresh food compartment.
9. The refrigerator of claim 1, wherein the first fresh keeping chamber is provided with a first sensor for detecting an oxygen content of the first fresh keeping chamber, and the first sensor is connected to the air pump.
10. The refrigerator as claimed in claim 1, wherein a second sensor is provided on the first fresh food compartment for detecting whether the first fresh food compartment is opened, the second sensor being connected to the air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359634.7U CN211876472U (en) | 2019-12-23 | 2019-12-23 | A kind of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359634.7U CN211876472U (en) | 2019-12-23 | 2019-12-23 | A kind of refrigerator |
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| CN211876472U true CN211876472U (en) | 2020-11-06 |
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| CN201922359634.7U Active CN211876472U (en) | 2019-12-23 | 2019-12-23 | A kind of refrigerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129386A1 (en) * | 2019-12-23 | 2021-07-01 | 广东美的白色家电技术创新中心有限公司 | Refrigerator |
| WO2022111299A1 (en) * | 2020-11-24 | 2022-06-02 | 广东美的白色家电技术创新中心有限公司 | Circulating oxygen discharge device, and kitchen appliance |
-
2019
- 2019-12-23 CN CN201922359634.7U patent/CN211876472U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129386A1 (en) * | 2019-12-23 | 2021-07-01 | 广东美的白色家电技术创新中心有限公司 | Refrigerator |
| WO2022111299A1 (en) * | 2020-11-24 | 2022-06-02 | 广东美的白色家电技术创新中心有限公司 | Circulating oxygen discharge device, and kitchen appliance |
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