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CN-224201983-U - Refrigerator fresh-keeping device and refrigerator

CN224201983UCN 224201983 UCN224201983 UCN 224201983UCN-224201983-U

Abstract

The application relates to the technical field of article preservation, in particular to a refrigerator preservation device and a refrigerator. The fresh-keeping device of the refrigerator comprises a fresh-keeping cabin, a nitrogen making module, a vacuum pump, a first valve and a second valve, wherein the fresh-keeping cabin is provided with an air inlet and an air outlet, the nitrogen making module is provided with a feed inlet, a nitrogen outlet, a first oxygen discharging port and a second oxygen discharging port, a three-way connecting pipe is provided with a first port, a second port and a third port, the nitrogen outlet is communicated with the air inlet through a first pipeline, the second oxygen discharging port is communicated with the first port through a second pipeline, the second port is communicated with the air outlet through a third pipeline, the vacuum pump is communicated with the third port, the first valve is arranged on the second pipeline, the second valve is arranged on the third pipeline, and the first valve and the second valve are alternatively opened. According to the application, the vacuum pumps respectively connected with the nitrogen making module and the fresh-keeping cabin are arranged, so that the oxygen accumulated by the nitrogen making module is fully discharged, the fresh-keeping cabin can be vacuumized before and after nitrogen filling, the nitrogen utilization rate is high, and the fresh-keeping effect is good.

Inventors

  • MA YANLONG
  • WANG JIAHUA
  • LI BI
  • QIAN TIANLEI

Assignees

  • 宁波方太厨具有限公司

Dates

Publication Date
20260505
Application Date
20250427

Claims (10)

  1. 1. The refrigerator fresh-keeping device (100) is characterized by comprising a fresh-keeping cabin (10), a nitrogen making module (20), a three-way connecting pipe (30), a first pipeline (40), a second pipeline (50), a third pipeline (60), a vacuum pump (70), a first valve (61) and a second valve (51), The fresh-keeping cabin (10) is provided with an air inlet (11) and an air outlet (12), the nitrogen making module (20) is provided with a feed inlet (21), a nitrogen outlet (22), a first oxygen discharging port (23) and a second oxygen discharging port (24), and the three-way connecting pipe (30) is provided with a first port (31), a second port (32) and a third port (33); One end of the first pipeline (40) is connected with the nitrogen outlet (22), the other end of the first pipeline is communicated with the air inlet (11), one end of the second pipeline (50) is connected with the second oxygen discharge port (24), the other end of the second pipeline is communicated with the first port (31), one end of the third pipeline (60) is connected with the second port (32), and the other end of the third pipeline is connected with the air outlet (12); The vacuum pump (70) is communicated with the third port (33), the first valve (61) is arranged on the second pipeline (50) and used for controlling the opening/closing of the second pipeline (50), the second valve (51) is arranged on the third pipeline (60) and used for controlling the opening/closing of the third pipeline (60), and the first valve (61) and the second valve (51) are alternatively opened.
  2. 2. The fresh-keeping apparatus according to claim 1, wherein the three-way connection pipe (30), the first valve (61) and the second valve (51) are integrated and constitute a three-way valve, and the three-way valve is configured as a three-way solenoid valve.
  3. 3. The fresh-keeping apparatus according to claim 1, wherein a buffer tank (80) is provided between the vacuum pump (70) and the third port (33).
  4. 4. The fresh-keeping apparatus of a refrigerator according to claim 1, wherein a third valve (231) is provided at the first oxygen discharge port (23), and the third valve (231) is used for controlling the opening/closing of the first oxygen discharge port (23).
  5. 5. The refrigerator fresh-keeping apparatus according to claim 1, wherein the refrigerator fresh-keeping apparatus includes at least one nitrogen-making cycle, and each nitrogen-making cycle includes a cycles, a being an integer and 1 or more; wherein the number of times the first valve (61) is opened is set to at least two times in one nitrogen production cycle; The vacuum pump (70) can vacuumize the fresh-keeping cabin (10) before the nitrogen is produced by the nitrogen producing module (20), and the residual times are configured to be after the fresh-keeping cabin (10) is filled with nitrogen and the nitrogen producing module (20) is closed, so that the vacuum pump (70) can vacuumize the fresh-keeping cabin (10) after the nitrogen is produced by the nitrogen producing module (20).
  6. 6. The fresh-keeping device of a refrigerator according to claim 1, wherein the fresh-keeping cabin (10) comprises a cabin body (13), a drawer (14) and a sealing ring (15), wherein one side of the cabin body (13) is provided with an opening, the air inlet (11) and the air outlet (12) are formed in the cabin body (13), the sealing ring (15) is arranged at the opening in a surrounding manner, and the drawer (14) is arranged in the cabin body (13) in a drawing manner through the opening; Wherein when the drawer (14) is closed, the drawer (14) is sealed against the sealing ring (15).
  7. 7. The fresh-keeping apparatus according to claim 6, wherein a side of the drawer (14) facing the air inlet (11) is provided as an opening (141).
  8. 8. The refrigerator fresh-keeping apparatus according to claim 1, wherein the refrigerator fresh-keeping apparatus (100) further comprises an air intake module (90), the air intake module (90) being in communication with the feed inlet (21) through a fourth pipe (91).
  9. 9. The refrigerator fresh-keeping apparatus according to claim 1, wherein the nitrogen-making module (20) is configured as a molecular sieve tower.
  10. 10. A refrigerator, characterized in that it comprises a refrigerator fresh-keeping device (100) according to any one of claims 1 to 9.

Description

Refrigerator fresh-keeping device and refrigerator Technical Field The application relates to the technical field of article preservation, in particular to a refrigerator preservation device and a refrigerator. Background In modern society, along with increasing demands of consumers on the fresh-keeping function of the refrigerator, the fresh-keeping technology of the traditional refrigerator only keeps fresh at low temperature, and the market demands cannot be met gradually. Refrigerator manufacturers are continually searching for new fresh keeping techniques to increase product competitiveness. The nitrogen-making fresh-keeping technology opens up a new way for fresh keeping of the refrigerator, can create a low-oxygen environment in the refrigerator, and further improves the fresh-keeping effect, thereby better keeping the freshness of foods. In the prior art, a nitrogen making structure is generally adopted to separate nitrogen and oxygen, and in order to ensure the high-efficiency nitrogen making of the nitrogen making structure, the oxygen generated by the nitrogen making structure is generally pumped by a vacuum pump after the nitrogen making structure separates the nitrogen and the oxygen. The nitrogen separated by the nitrogen making structure is filled into the fresh-keeping area to drive the oxygen-enriched gas in the refrigerator to be discharged, and the nitrogen filling process of the method is natural replacement, namely, the nitrogen is simply filled into the fresh-keeping area, and the oxygen-enriched gas is extruded from the fresh-keeping area, so that a part of nitrogen is discharged to the outside along with the nitrogen in the oxygen-enriched gas discharging process, the problem of low utilization rate of the filled nitrogen exists, and the fresh-keeping effect is poor. Disclosure of utility model Based on this, it is necessary to provide a fresh-keeping apparatus for a refrigerator capable of improving the nitrogen use ratio. In order to solve the technical problems, the application provides the following technical scheme: The refrigerator fresh-keeping device comprises a fresh-keeping cabin, a nitrogen making module, a three-way connecting pipe, a first pipeline, a second pipeline, a third pipeline, a vacuum pump, a first valve and a second valve, The fresh-keeping cabin is provided with an air inlet and an air outlet, the nitrogen making module is provided with a feed inlet, a nitrogen outlet, a first oxygen discharge port and a second oxygen discharge port, and the three-way connecting pipe is provided with a first port, a second port and a third port; one end of the first pipeline is connected with the nitrogen outlet, and the other end of the first pipeline is communicated with the air inlet; one end of the third pipeline is connected with the second port, and the other end of the third pipeline is connected with the air outlet; the vacuum pump is communicated with the third port, the first valve is arranged on the second pipeline and used for controlling the opening/closing of the second pipeline, the second valve is arranged on the third pipeline and used for controlling the opening/closing of the third pipeline, and the first valve and the second valve are alternatively opened. It is understood that the application is provided with the second pipeline, the third pipeline, the three-way connecting pipe, the first valve, the second valve and the vacuum pump, and the first valve and the second valve are alternatively opened. That is, when the first valve is open, the second valve is closed, or the first valve is closed and the second valve is open. When the first valve is closed and the second valve is opened, the vacuum pump can vacuumize the fresh-keeping cabin, and part of oxygen in the fresh-keeping cabin can be firstly discharged if the vacuum pump vacuumizes the fresh-keeping cabin before the fresh-keeping cabin is filled with nitrogen, so that after the nitrogen is filled, the filled nitrogen is basically used for building fresh-keeping high-nitrogen low-oxygen environment, and the utilization rate of the nitrogen can be improved, and meanwhile, if the fresh-keeping cabin is vacuumized after the nitrogen is filled, the fresh-keeping cabin can be in a negative pressure state, so that double fresh-keeping of negative pressure and nitrogen is realized, and the fresh-keeping effect is better. In one embodiment, the three-way connection pipe, the first valve and the second valve are integrated and form a three-way valve, and the three-way valve is configured as a three-way electromagnetic valve. It can be understood that through integrating three-way connecting pipe, first valve, second valve in a three-way valve, reduced the part quantity and the connection structure that vacuum pump and nitrogen making module and fresh-keeping cabin are connected, not only make the structure of refrigerator fresh-keeping device compacter, can also simplify the installation flow to improve refr