CN220250393U - Refrigerator with a refrigerator body - Google Patents

Abstract

The utility model provides a refrigerator, which comprises an air pump, a cooling piece, a dehumidifying piece, a molecular sieve tower, a containing cavity and a fresh-keeping cabin, wherein the air pump, the cooling piece, the dehumidifying piece and the molecular sieve tower are sequentially communicated along the flowing direction of gas, the air pump is used for pressurizing the gas, the molecular sieve tower comprises an air outlet, the air outlet is used for discharging nitrogen in the molecular sieve tower, and the air outlet is communicated with the fresh-keeping cabin; wherein the cooling element is arranged in the accommodating cavity, and the temperature in the accommodating cavity is not higher than the temperature of the gas in the cooling element. When the gas in the box is used as the nitrogen-making raw material gas, the humidity of the raw material gas is high, and the raw material gas can be dehumidified through the dehumidifying piece, so that the molecular sieve tower can be prevented from influencing the performance of the molecular sieve tower due to moisture absorption, the nitrogen-making performance of the molecular sieve tower is improved, and the fresh-keeping effect of foods in the fresh-keeping cabin is influenced. When the out-of-box gas is used as the nitrogen-making raw material gas, the high-temperature raw material gas can exchange heat with the accommodating cavity, so that the temperature of the raw material gas is reduced.

Description

Refrigerator with a refrigerator body

Technical Field

The present utility model relates to a refrigerator.

Background

The PSA pressure-variable nitrogen-making technology can be used for high-efficiency nitrogen-oxygen separation, and is mainly applied to industrial nitrogen making at present, such as nitrogen making machines, refrigeration houses, ocean vessels, and the like; in the prior art, the nitrogen making machine is applied to a refrigerator, the made nitrogen is used for preserving food materials, but because the gas in the refrigerator is used as the nitrogen making raw material gas, the humidity of the gas in the refrigerator is very high (fruit and vegetable are contained and are more than or equal to 60 percent), the performance of the nitrogen making molecular sieve tower is easily reduced due to moisture absorption, the nitrogen making performance is rapidly reduced, and the due preservation effect can not be achieved; if the outside air is used as the raw material for the refrigerator, the temperature of the produced nitrogen is greatly influenced by the outside (the produced nitrogen can exceed 35 ℃ in summer), and when the nitrogen is filled into the fresh-keeping cabin, the temperature fluctuation in the cabin is greatly caused, and the fresh-keeping effect is reduced.

Disclosure of Invention

The utility model aims to solve the technical problems that the nitrogen-making molecular sieve is easy to poison due to moisture absorption because the gas in the box is used as a nitrogen-making raw material and the humidity of the gas in the box is very high (fruit and vegetable are contained and is more than or equal to 60 percent), the nitrogen-making performance is rapidly reduced, and the fresh-keeping effect is not achieved; if the gas outside the refrigerator is used as a gas source, the temperature of the produced nitrogen is greatly influenced by the outside (the nitrogen production can exceed 35 ℃ in summer), and when the nitrogen is filled into the fresh-keeping cabin, the temperature fluctuation in the cabin can be greatly caused, and the defect of reducing the fresh-keeping effect is overcome.

The utility model solves the technical problems by the following technical scheme:

the utility model discloses a refrigerator, which comprises an air pump, a cooling part, a dehumidifying part, a molecular sieve tower, a containing cavity and a fresh-keeping cabin, wherein the air pump, the cooling part, the dehumidifying part and the molecular sieve tower are sequentially communicated in the flowing direction of gas, the air pump is used for pressurizing the gas, the molecular sieve tower comprises an air outlet, the air outlet is used for discharging nitrogen in the molecular sieve tower, and the air outlet is communicated with the fresh-keeping cabin; the cooling piece is arranged in the accommodating cavity, and the temperature in the accommodating cavity is not higher than the temperature of the gas in the cooling piece, so that the gas in the cooling piece reaches the preset temperature through heat exchange.

In this scheme, adopt above-mentioned structural style, when regard as nitrogen raw materials gas with the incasement gas, the raw materials gas's in the cooling piece temperature is not less than the temperature that holds the intracavity this moment, but raw materials gas's humidity is great, can dehumidify raw materials gas through the dehumidification piece to can prevent the molecular sieve tower because of the moisture absorption influences the performance of molecular sieve tower, improve the nitrogen production performance of molecular sieve tower, thereby influenced the fresh-keeping effect of fresh-keeping cabin interior food. When the out-of-box gas is used as the nitrogen-making raw material gas, the high-temperature raw material gas can quickly exchange heat with the accommodating cavity when passing through the cooling piece, so that the temperature of the raw material gas is reduced. In addition, the raw material gas is in a high-pressure state due to the pressurizing effect of the air pump, and the water molecule density of the raw material gas is far greater than that of normal-pressure air. When the gas of the cooling piece is cooled, the water molecules contained in the gas are rapidly condensed and separated out due to the relative humidity exceeding 100 percent and are filtered and removed by the filtering piece, so that the effect of drying the raw gas is achieved. The molecular sieve tower is positioned at the rear end of the dehumidifying piece, high-pressure raw material gas flows into the molecular sieve tower after being dehumidified and dried, and nitrogen and oxygen are separated in the molecular sieve tower, and the prepared nitrogen can enter a refrigerator fresh-keeping cabin to create a high-nitrogen low-oxygen environment so as to play a role in food material fresh keeping.

Preferably, the inlet of the air pump is arranged on the refrigerator body of the refrigerator, and the inlet of the air pump is communicated with the outside.

In the scheme, the structure is adopted, so that the outside air can enter the air pump through the inlet of the air pump, and the nitrogen-making gas in the molecular sieve tower can come from the air outside the refrigerator.

Preferably, the refrigerator further comprises a throttling piece, the air outlet is communicated with the fresh-keeping cabin through the throttling piece, and the aperture of the throttling piece is smaller than that of the air outlet.

In the scheme, the structure is adopted, and the resistance is manufactured through the throttling piece, so that the effects of gas making throttling and pressure maintaining in the tower can be achieved, and the pressure in the sieve tower can meet the nitrogen-oxygen separation requirement of the molecular sieve tower.

Preferably, the molecular sieve tower further comprises an exhaust port and a valve, wherein the exhaust port is used for exhausting oxygen in the molecular sieve tower, and the valve is arranged at the exhaust port and used for controlling the opening and closing of the exhaust port.

In the scheme, the structure is adopted, and the opening and closing of the exhaust port can be realized through the valve, so that the controllability of the exhaust port is improved.

Preferably, the refrigerator further comprises a three-way valve, the three-way valve comprises a first connecting port, a second connecting port and a third connecting port, the first connecting port is communicated with the dehumidifying piece, the second connecting port is communicated with the molecular sieve tower, and the exhaust port is arranged on the third connecting port.

In the scheme, the raw material gas can be sent into the molecular sieve tower by adopting the structural form; and the oxygen in the molecular sieve tower can be discharged to the space outside the fresh-keeping cabin through the third connecting port. When the molecular sieve tower is used for gas production and adsorption, the valve is closed, and raw material gas can only enter the molecular sieve tower through the dehumidifying piece. When the molecular sieve tower stops producing gas, the molecular sieve tower analyzes and discharges the adsorbed oxygen-enriched gas, the valve is opened, and the oxygen-enriched gas in the molecular sieve tower can be discharged to the space outside the fresh-keeping cabin through the three-way valve and the third connecting port. After the analysis and the oxygen discharge are completed, the molecular sieve tower carries out the next nitrogen production flow.

Preferably, the refrigerator comprises a first silencer, and the first silencer is arranged at the exhaust port.

In the scheme, the structure is adopted, so that noise of the exhaust port during exhaust is reduced, and the working environment of operators is improved.

Preferably, the refrigerator further comprises a filter element, wherein the filter element is arranged at an inlet of the air pump and is used for filtering impurities in the air.

In this scheme, can filter the impurity in the gas through the filter, prevent that impurity etc. from getting into in the air pump and influencing the use of air pump to the life of air pump has been improved. In addition, by adopting the structure, the impurity is prevented from entering the air pump and colliding with the air pump to generate noise, and the working environment of operators is improved.

Preferably, the refrigerator further comprises a second silencer, and the second silencer is arranged at the outlet of the air pump.

In the scheme, the structure is adopted, so that the noise of an air pump outlet is reduced, and the working environment of operators is improved.

Preferably, the direction of extension of the cooling element is the same as the direction of flow of the gas.

In this scheme, adopt above-mentioned structural style, increased the cooling member and hold the area of contact in chamber to make the raw materials gas in the cooling member realize heat exchange with holding the chamber better.

Preferably, the accommodating cavity is arranged in a refrigerating chamber of the refrigerator;

or the accommodating cavity is arranged in a refrigerating chamber of the refrigerator;

or the accommodating cavity is arranged in the refrigerating air duct of the refrigerator.

The utility model has the positive progress effects that:

when the gas in the box is used as the nitrogen-making raw material gas, the temperature of the raw material gas in the cooling piece is not lower than the temperature in the accommodating cavity, but the humidity of the raw material gas is higher, and the raw material gas can be dehumidified through the dehumidifying piece, so that the performance of the molecular sieve tower can be prevented from being influenced due to moisture absorption, the nitrogen-making performance of the molecular sieve tower is improved, and the fresh-keeping effect of foods in the fresh-keeping cabin is influenced. When the out-of-box gas is used as the nitrogen-making raw material gas, the high-temperature raw material gas can quickly exchange heat with the accommodating cavity when passing through the cooling piece, so that the temperature of the raw material gas is reduced. In addition, the raw material gas is in a high-pressure state due to the pressurizing effect of the air pump, and the water molecule density of the raw material gas is far greater than that of normal-pressure air. When the gas of the cooling piece is cooled, the water molecules contained in the gas are rapidly condensed and separated out due to the relative humidity exceeding 100 percent and are filtered and removed by the filtering piece, so that the effect of drying the raw gas is achieved. The molecular sieve tower is positioned at the rear end of the dehumidifying piece, high-pressure raw material gas flows into the molecular sieve tower after being dehumidified and dried, and nitrogen and oxygen are separated in the molecular sieve tower, and the prepared nitrogen can enter a refrigerator fresh-keeping cabin to create a high-nitrogen low-oxygen environment so as to play a role in food material fresh keeping.

Drawings

Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present utility model.

Reference numerals illustrate:

refrigerator 100

Air pump 1

Cooling part 2

Dehumidifying part 3

Molecular sieve tower 4

Accommodating chamber 5

Fresh-keeping cabin 6

Throttling element 7

Air outlet 8

Exhaust port 9

Valve 10

Three-way valve 11

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.

As shown in fig. 1, the present embodiment provides a refrigerator 100, where the refrigerator 100 includes an air pump 1, a cooling member 2, a dehumidifying member 3, a molecular sieve tower 4, a containing cavity 5, and a fresh-keeping cabin 6, the air pump 1, the cooling member 2, the dehumidifying member 3, and the molecular sieve tower 4 are sequentially communicated along a flow direction of gas, the air pump 1 is used for pressurizing the gas, the molecular sieve tower 4 includes an air outlet 8, the air outlet 8 is used for discharging nitrogen in the molecular sieve tower 4, and the air outlet 8 is communicated with the fresh-keeping cabin 6; wherein the cooling element 2 is arranged in the accommodating cavity 5, and the temperature in the accommodating cavity 5 is not higher than the temperature of the gas in the cooling element 2, so that the gas in the cooling element 2 reaches the preset temperature through heat exchange. Specifically, when the gas in the box is used as the nitrogen-making raw material gas, the temperature of the raw material gas in the cooling part 2 is not lower than the temperature in the accommodating cavity 5 at this time, but the humidity of the raw material gas is higher, and the raw material gas can be dehumidified through the dehumidifying part 3, so that the performance of the molecular sieve tower 4 is prevented from being influenced by moisture absorption, the nitrogen-making performance of the molecular sieve tower 4 is improved, and the fresh-keeping effect of foods in the fresh-keeping cabin 6 is influenced. When the off-tank gas is used as the nitrogen-producing raw material gas, the high-temperature raw material gas can rapidly exchange heat with the accommodating chamber 5 when passing through the cooling member 2, thereby lowering the temperature of the raw material gas. In addition, the raw material gas is in a high pressure state due to the pressurizing action of the air pump 1, and the water molecule density is far greater than that of normal pressure air. When the gas of the cooling element 2 is cooled, the water molecules contained therein are rapidly condensed and separated out due to the relative humidity exceeding 100%, and are filtered and removed by the filtering element, thereby achieving the effect of drying the raw gas. The molecular sieve tower 4 is positioned at the rear end of the dehumidifying part 3, high-pressure raw material gas flows into the molecular sieve tower 4 after being dehumidified and dried, and nitrogen-oxygen separation is carried out in the molecular sieve tower 4, and the prepared nitrogen can enter the fresh-keeping cabin 6 of the refrigerator 100 to create a high-nitrogen low-oxygen environment so as to play a role in food material fresh keeping.

In the present embodiment, the cooling element 2 is a cooling tube, and may have a disk shape, a ring shape, a spiral shape, or the like, or may have an auxiliary structure such as fins. In other embodiments, the cooling element 2 may be a condenser, an evaporator or other components capable of rapid heat dissipation, which is not limited herein.

The inlet of the air pump 1 is arranged on the refrigerator body of the refrigerator 100, and the inlet of the air pump 1 is communicated with the outside, so that the outside air can enter the air pump 1 through the inlet of the air pump 1, and the nitrogen-making gas in the molecular sieve tower 4 can come from the air outside the refrigerator 100. In other embodiments, the air pump 1 may also be in communication with the external space of the tank through an air inlet pipe. When the air pump 1 works, the outside air of the box body is extracted, compressed and then supplied to a rear end pipeline to be used as raw material gas for preparing nitrogen by the molecular sieve tower 4. The accommodating chamber 5 is provided in the refrigerating chamber of the refrigerator 100; alternatively, the accommodating chamber 5 is provided in the freezing chamber of the refrigerator 100; alternatively, the accommodating chamber 5 is provided in the cooling duct of the refrigerator 100. That is, in this embodiment, the raw material gas in the cooling element 2 can exchange heat with the refrigerating chamber or the freezing chamber or the refrigerating air duct, so that the temperature of the gas in the cooling element 2 is reduced, and the temperature of the gas in the cooling element 2 can be reduced to be less than or equal to 4 ℃. In other embodiments, the setting position of the accommodating cavity 5 may be adjusted according to actual requirements, which is not limited herein.

When the compressed air is specifically used, the condensation point of the compressed air at 0.7MPa is equivalent to-23 ℃ in a normal pressure state at 2 ℃; when the pressure is 1.0MPa and the temperature is 2 ℃, the condensation point is equivalent to the normal pressure state of minus 28 ℃, and the optimal working pressure of the nitrogen-making molecular sieve is 0.6-0.8 MPa, the raw material gas is far drier than the air outside the box body after the structure is cooled and dehumidified by the technology, and the phenomenon of performance degradation of the molecular sieve due to moisture absorption can be greatly slowed down.

The refrigerator 100 further comprises a throttling element 7, the air outlet 8 is communicated with the fresh-keeping cabin 6 through the throttling element 7, and the aperture of the throttling element 7 is smaller than that of the air outlet 8. By adopting the structure, the resistance is manufactured through the throttling piece 7, so that the functions of gas production throttling and pressure maintaining in the tower can be achieved, and the pressure in the sieve tower can meet the nitrogen-oxygen separation requirement of the molecular sieve tower 4.

The molecular sieve tower 4 also comprises an exhaust port 9 and a valve 10, wherein the exhaust port 9 is used for exhausting oxygen in the molecular sieve tower 4, and the valve 10 is arranged at the exhaust port 9 and used for controlling the opening and closing of the exhaust port 9. By adopting the structure, the valve 10 can realize the opening and closing of the exhaust port 9, thereby improving the controllability of the exhaust port 9.

The refrigerator 100 further comprises a three-way valve 11, the three-way valve 11 comprises a first connecting port, a second connecting port and a third connecting port, the first connecting port is communicated with the dehumidifying piece 3, the second connecting port is communicated with the molecular sieve tower 4, and the air outlet 9 is arranged on the third connecting port. By adopting the structure, the raw material gas can be sent into the molecular sieve tower 4; and the oxygen in the molecular sieve tower 4 can be discharged to the space outside the fresh-keeping cabin 6 through the third connecting port. When the molecular sieve tower 4 is used for gas production and adsorption, the valve 10 is closed, and raw material gas can only enter the molecular sieve tower 4 through the dehumidifying part 3. When the molecular sieve tower 4 stops producing gas, the molecular sieve tower 4 analyzes and discharges the adsorbed oxygen-enriched gas, the valve 10 is opened, and the oxygen-enriched gas in the molecular sieve tower 4 can be discharged to the space outside the fresh-keeping cabin 6 through the three-way valve 11 and the third connecting port. After the analysis and the oxygen discharge are completed, the molecular sieve tower 4 carries out the next nitrogen production flow.

The refrigerator 100 includes the first muffler provided at the exhaust port 9, which reduces noise when the exhaust port 9 is exhausted, and improves the working environment of an operator.

The refrigerator 100 further includes a filter provided at an inlet of the air pump 1, the filter being for filtering impurities in the air. Specifically, impurity in the gas can be filtered through the filter, prevent impurity etc. from getting into in the air pump 1 and influencing the use of air pump 1 to the life of air pump 1 has been improved. In addition, by adopting the structure, the impurity is prevented from entering the air pump 1 and colliding with the air pump 1 to generate noise, and the working environment of operators is improved.

The refrigerator 100 further includes a second muffler provided at an outlet of the air pump 1. By adopting the structure, the noise of the outlet of the air pump 1 is reduced, and the working environment of operators is improved.

The direction of extension of the cooling element 2 is the same as the direction of flow of the gas. By adopting the structural form, the contact area between the cooling piece 2 and the accommodating cavity 5 is increased, so that the raw material gas in the cooling piece 2 can better realize heat exchange with the accommodating cavity 5.

In the specific implementation, when the air pump 1 pressurizes the raw material gas, the raw material gas is rapidly increased due to volume compression and water molecule density, and when the raw material gas is cooled by heat dissipation of the cooling pipe, because the temperature in the refrigerator 100 is very low (less than or equal to 4 ℃, namely the pressure dew point temperature of the raw material gas), water molecules are rapidly condensed and accumulated and are removed by the dehumidifying part 3 to become dry gas. Through the process, the moisture in the raw material gas is greatly reduced, and the molecular sieve tower 4 is hardly influenced any more, so that the service life of the molecular sieve tower 4 is greatly prolonged. By adopting the structure, the impact on the temperature of the fresh-keeping cabin 6 caused by MAP can be avoided, so that the air conditioner of the refrigerator 100 has the dual effects of high nitrogen fresh keeping and stable temperature; as is well known, when the gas is pressurized, the temperature of the gas increases along with the increase of the density, the higher the compression degree is, the larger the temperature rise amplitude is, and the higher the temperature of the produced nitrogen is after the nitrogen and oxygen are separated by the molecular sieve tower 4; considering that the working pressure of the molecular sieve tower 4 is 0.6-0.8 Mpa which is 6-8 times of normal air, the temperature rise of the prepared nitrogen is quite obvious, and if the fresh-keeping cabin 6 is directly filled, the temperature in the cabin can obviously fluctuate, which is not beneficial to food fresh keeping. After the raw material gas is pressed to be changed into high-temperature gas, the raw material gas is firstly subjected to heat dissipation and temperature reduction through a cooling pipe to be at the same level as the existing state in the box, and at the moment, nitrogen gas produced through nitrogen-oxygen separation can not cause temperature impact on the fresh-keeping cabin 6, so that the fresh-keeping box has the dual advantages of high nitrogen fresh-keeping and stable temperature. The cooling element 2 and the dehumidifying element 3 are arranged, and the air inside or outside the refrigerator 100 is used as an air source, so that the air source is changeable and suitable; the temperature of the air in the refrigerator 100 is low, but the humidity is high, and the humidity of the air outside the refrigerator 100 is low, but the air is not suitable for being directly used as an air source for separating nitrogen and oxygen by the molecular sieve, but the defects of the air source and the air source are overcome after passing through the refrigerator 100 in the embodiment, so that the usable range of the air source for migrating MAP air conditioner to the refrigerator 100 is greatly widened.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. The refrigerator is characterized by comprising an air pump, a cooling piece, a dehumidifying piece, a molecular sieve tower, a containing cavity and a fresh-keeping cabin, wherein the air pump, the cooling piece, the dehumidifying piece and the molecular sieve tower are sequentially communicated in the flowing direction of gas, the air pump is used for pressurizing the gas, the molecular sieve tower comprises an air outlet, the air outlet is used for discharging nitrogen in the molecular sieve tower, and the air outlet is communicated with the fresh-keeping cabin; the cooling piece is arranged in the accommodating cavity, and the temperature in the accommodating cavity is not higher than the temperature of the gas in the cooling piece, so that the gas in the cooling piece reaches the preset temperature through heat exchange.

2. The refrigerator as claimed in claim 1, wherein the inlet of the air pump is provided on the refrigerator body, and the inlet of the air pump is communicated with the outside.

3. The refrigerator of claim 1, further comprising a throttling element, wherein the air outlet communicates with the fresh compartment through the throttling element, and wherein the aperture of the throttling element is smaller than the aperture of the air outlet.

4. The refrigerator of claim 1, wherein the molecular sieve tower further comprises an exhaust port for exhausting oxygen in the molecular sieve tower and a valve provided at the exhaust port for controlling the opening and closing of the exhaust port.

5. The refrigerator of claim 4, further comprising a three-way valve comprising a first connection port, a second connection port and a third connection port, wherein the first connection port is communicated with the dehumidifying member, the second connection port is communicated with the molecular sieve tower, and the air outlet is formed in the third connection port.

6. The refrigerator of claim 4, wherein the refrigerator includes a first muffler provided at the exhaust port.

7. The refrigerator of claim 1, further comprising a filter provided at an inlet of the air pump, the filter for filtering impurities in the air.

8. The refrigerator of claim 1, further comprising a second muffler provided at an outlet of the air pump.

9. The refrigerator of claim 1, wherein the cooling member extends in the same direction as the flow of the gas.

10. The refrigerator as claimed in claim 1, wherein the receiving chamber is provided in a refrigerating chamber of the refrigerator;

or the accommodating cavity is arranged in a refrigerating chamber of the refrigerator;

or the accommodating cavity is arranged in the refrigerating air duct of the refrigerator.