CN220981690U

CN220981690U - Refrigerating equipment

Info

Publication number: CN220981690U
Application number: CN202322619253.4U
Authority: CN
Inventors: 冯少聪; 浦祥海; 任伟
Original assignee: Hefei Midea Biomedical Co ltd
Current assignee: Hefei Midea Biomedical Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-05-17
Anticipated expiration: 2033-09-25

Abstract

The application relates to the technical field of refrigeration equipment, and provides refrigeration equipment which comprises a box body, a door body and a pressure relief device, wherein the box body forms a refrigeration cavity and a material taking port communicated with the refrigeration cavity; the door body can selectively open or close the fetching port; the box and/or the door body is formed with the ventilation channel of intercommunication external world and refrigeration chamber, and pressure relief device sets up in the ventilation channel, and pressure relief device includes casing and ooff valve, is formed with cavity, air inlet and pressure relief mouth in the casing, air inlet and pressure relief mouth all communicate with the cavity, and the ooff valve setting is at the cavity, and the ooff valve is used for selectively opening or closing the air inlet, pressure relief mouth intercommunication refrigeration chamber. The refrigeration equipment provided by the application can be used for pressure relief.

Description

Refrigerating equipment

Technical Field

The application relates to the technical field of refrigeration equipment, in particular to refrigeration equipment.

Background

The refrigeration equipment comprises a box body and a door body, wherein negative pressure is formed in the box body after the door is closed due to overlarge temperature difference between the inner side and the outer side of the box body, so that the door body is difficult to open.

Disclosure of utility model

In view of the foregoing, it is desirable to provide a refrigeration apparatus capable of pressure relief.

In order to achieve the above object, the technical solution of the embodiment of the present application is as follows:

The embodiment of the application discloses refrigeration equipment, which comprises:

The box body is provided with a refrigerating cavity and an object taking port communicated with the refrigerating cavity;

The door body can selectively open or close the object taking opening;

The pressure relief device, the box and/or the door body forms the passageway of ventilating that has the intercommunication external world with the refrigeration chamber, pressure relief device sets up in the passageway of ventilating, pressure relief device includes casing and ooff valve, be formed with cavity, air inlet and pressure relief mouth in the casing, the air inlet with the pressure relief mouth all with the cavity intercommunication, the ooff valve sets up the cavity, the ooff valve is used for selectively opening or closing the air inlet, the pressure relief mouth intercommunication the refrigeration chamber.

In one embodiment, the switch valve is in interference fit with the housing; or alternatively

The switch valve and the shell are integrally formed.

In an embodiment, the on-off valve is formed with a flexible surface, and the flexible surface is formed with at least one slit that keeps a closed state, and the slit can communicate or shut off the air inlet according to a pressure difference between the air inlet and the pressure relief opening.

In an embodiment, the casing includes entrance and pressure release section, the entrance is connected the pressure release section, the entrance with the inside of pressure release section is limited jointly the cavity, the entrance is kept away from the one end of pressure release section is formed with the air inlet, the pressure release section is kept away from the one end of entrance is formed with the pressure release mouth, the area of the cross section of arbitrary flow of pressure release section is not greater than the area of the cross section of flow of entrance.

In an embodiment, the pressure release section includes two guide portions and two transition portions, the two guide portions are disposed at intervals along a first direction, the two transition portions are connected to two ends of the two guide portions along a second direction, a distance between the two guide portions is gradually reduced along a gas flow direction, and the pressure release opening is formed at a tail end of the pressure release section, wherein the first direction, the second direction and the gas flow direction are mutually perpendicular.

In one embodiment, the outer side surface of the guiding part is a plane.

In an embodiment, the refrigeration device comprises a shielding plate, one end of the shielding plate is connected to the pressure relief opening, and the other end of the shielding plate is bent downwards at an interval and located at one side, far away from the air inlet, of the pressure relief opening.

In an embodiment, the pressure relief device is made of silica gel or rubber.

In one embodiment, the pressure relief device includes a drying member disposed in the cavity.

In one embodiment, the drying element is a molecular sieve, zeolite, or calcium oxide.

The embodiment of the application discloses refrigeration equipment, which is characterized in that a ventilation channel is formed in a door body and/or a box body, and then a pressure relief device is arranged in the ventilation channel, so that the pressure relief device 2 can be protected to a certain extent, and the service life of the pressure relief device is prolonged. By forming the cavity, the air inlet and the pressure relief vent in the housing, a path can be provided for the flow of gas for pressure relief. The opening and closing of the air inlet are controlled by arranging the switch valve in the cavity, and when the box body is required to be depressurized, the air inlet can be opened through the switch valve, so that external air can enter the refrigerating cavity from the air inlet through the cavity and the pressure relief opening to balance the pressure difference between the inside and the outside of the box body, the door body is easy to open by a user, and the damage to the preparation equipment is small; when pressure relief is not needed, the air inlet can be closed through the switch valve, so that the cavity is isolated from the outside, and the external impurities are reduced to enter the refrigerating cavity to pollute the articles.

Drawings

Fig. 1 is a schematic structural diagram of a box body, a pressure relief device, a fixing buckle and a shielding plate according to an embodiment of the present application;

FIG. 2 is a schematic view of the pressure relief device, retaining buckle and shielding plate of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

Fig. 4 is a schematic view of the structure of the housing and the shielding plate in fig. 3.

Description of the reference numerals

A case 1; a pressure relief device 2; a housing 21; an air inlet 21a; a cavity 21b; a pressure relief port 21c; an inlet section 211; a pressure relief section 212; a guide 2121; a transition 2122; a switch valve 22; a flexible surface 22a; a slit 22b; a fixing buckle 3; a protrusion 31; a flange 32; a shielding plate 4.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

The application will be described in further detail with reference to the accompanying drawings and specific examples. The description of "first," "second," etc. in embodiments of the application is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly including at least one feature. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.

In order to open the door body, the door body is opened by adding the power-assisted handle and the arm of force, so that the supporting position of the power-assisted handle is deformed and broken, and the supporting position of the box body is sunken. In other related technologies, ventilation holes are formed in the box body, but if the ventilation holes are blocked for too long, water vapor can freeze and block in the ventilation holes, and a heating device is required to be additionally arranged to drain the ventilation holes, so that the cost is obviously increased.

The embodiment of the application provides a refrigeration device, referring to fig. 1 to 4, a box body 1 forms a refrigeration cavity and a fetching port communicated with the refrigeration cavity. The door body can selectively open or close the fetching opening.

The case 1 and/or the door body are formed with a ventilation passage communicating the outside and the refrigerating chamber. Illustratively, the housing 1 has a vent passage formed therein. The pressure relief device 2 is arranged in the ventilation channel, the pressure relief device 2 comprises a shell 21 and a switch valve 22, a cavity 21b, an air inlet 21a and a pressure relief opening 21c are formed in the shell 21, the air inlet 21a and the pressure relief opening 21c are both communicated with the cavity 21b, the switch valve 22 is arranged in the cavity 21b, the switch valve 22 is used for selectively opening or closing the air inlet 21a, and the pressure relief opening 21c is communicated with the refrigerating cavity.

The embodiment of the application provides refrigeration equipment, which is characterized in that a ventilation channel is formed in a door body and/or a box body 1, and then a pressure relief device 2 is arranged in the ventilation channel, so that the pressure relief device 2 can be protected to a certain extent, and the service life of the pressure relief device 2 is prolonged. By forming the cavity 21b, the gas inlet 21a, and the pressure relief port 21c in the housing 21, a path for the flow of gas can be provided for pressure relief. The opening and closing of the air inlet 21a are controlled by arranging the switch valve 22 in the cavity 21b, when the pressure of the box body 1 needs to be released, the air inlet 21a can be opened through the switch valve 22, so that external air can enter the refrigerating cavity from the air inlet 21a through the cavity 21b and the pressure release opening 21c to balance the pressure difference between the inside and the outside of the box body 1, the door body is easy to open by a user, and the damage to preparation equipment is small; when pressure relief is not needed, the air inlet 21a can be closed through the switch valve 22, so that the cavity 21b is isolated from the outside, and the foreign matters entering the refrigerating cavity are reduced to pollute the objects.

In an exemplary embodiment, the refrigeration device may be a refrigerator or a cryogenic container for holding medical equipment.

Illustratively, in an embodiment, the refrigeration apparatus includes a protective tube, and the protective tube may be disposed in the ventilation channel first and then the pressure relief device 2 may be disposed in the protective tube during installation, so that protection of the pressure relief device 2 may be further improved.

Illustratively, in one embodiment, the on-off valve 22 may be provided at the air inlet 21a, thus facilitating replacement of the on-off valve 22.

In an exemplary embodiment, referring to fig. 2 and 3, the refrigeration device includes two fixing buckles 3, the two fixing buckles 3 are respectively sleeved at two ends of the protection tube, and a plurality of protrusions 31 are formed on the fixing buckles 3, and the protrusions 31 are used for abutting against the inner wall of the protection tube so as to increase the connection stability of the pressure relief device 2 and the protection tube; the flange 32 is formed on the periphery of one end, far away from the bulge 31, of the fixing buckle 3 and is used for abutting against the inlet and the outlet of the air passage, so that the pressure relief device 2 is prevented from moving along the air flowing direction, and the working stability is improved.

In one embodiment, the pressure relief device 2 comprises a drying element arranged in the cavity 21b. In this way, the drying of the cavity 21b can be maintained, and the influence of the freezing of the cavity 21b on the flow of the gas can be avoided, so that the gas flow is smooth.

In one embodiment, the drying element is a molecular sieve, zeolite, or calcium oxide. The drying piece can be a molecular sieve, so that on one hand, the molecular sieve has strong adsorption capacity, can quickly absorb and remove water, and reduces the icing probability; on the other hand, the molecular sieve is environment-friendly, nontoxic and harmless and does not pollute the objects in the refrigerating cavity. The drying piece can also be zeolite, on one hand, the zeolite can absorb water vapor in an environment with higher relative humidity and lock the water vapor in the pores of the drying piece, so that the problems of decay, mildew and the like caused by the excessively high environment humidity of the cavity 21b can be effectively avoided; on the other hand, the zeolite has the characteristics of difficult decomposition, no toxicity and no harm, does not pollute the refrigerating cavity, and does not generate harmful gas in the using process. The drying member may be calcium oxide, which has a strong moisture absorption capability and can rapidly absorb and consume moisture in the air to generate calcium hydroxide, so that a long-term drying effect is achieved in the cavity 21 b.

In one embodiment, the on-off valve 22 is disposed in an interference fit with the housing 21. On the one hand, a larger gap between the switch valve 22 and the shell 21 can be avoided through interference fit, so that the reliability of combination is improved; on the other hand, because the clearance of the interference fit is smaller, the vibration and impact generated between the switch valve 22 and the shell 21 are effectively restrained, so that the stability of the whole pressure relief device 2 is improved; on the other hand, the interference fit can also provide a good seal to prevent external impurities from entering the refrigeration cavity from the gap between the housing 21 and the on-off valve 22; on the other hand, the replacement of the drying part is facilitated, for example, when the drying part needs to be replaced, the on-off valve 22 can be pulled out from the air inlet 21a, the current drying part is taken out from the cavity 21b, then a new drying part is replaced, and finally the on-off valve 22 is blocked at the air inlet 21a.

In one embodiment, the on-off valve 22 and the housing 21 may be integrally formed. In this way, the connection strength between the on-off valve 22 and the housing 21 can be enhanced, and the occurrence of relative movement between the two can be avoided.

In one embodiment, referring to fig. 2 and 3, the switch valve 22 is formed with a flexible surface 22a, the flexible surface 22a is formed with at least one slit 22b kept in a closed state, and the slit 22b can communicate with or shut off the air inlet 21a according to a pressure difference between the air inlet 21a and the pressure relief port 21 c. The shape of the on-off valve 22 is not limited, for example, the on-off valve may be a cover, the cover surface is a flexible surface 22a, and the flexible surface 22a is formed with at least one slit 22b kept in a closed state, that is, when the pressure of the refrigerating cavity is not released, the slit 22b is kept in a closed state, and the air inlet 21a is closed, so that external impurities can be reduced from entering the refrigerating cavity; when a user needs to open the article taking opening to take articles, the air inlet 21a can be communicated through the pressing slit 22b, so that air can enter the refrigeration cavity to balance pressure difference, and the user can easily pull the door body to open the article taking opening.

For example, in one embodiment, the number of slits 22b may be two to form a cross shape, so that the external air intake amount can be increased, the pressure release time can be accelerated, and the efficiency is high.

For example, in an embodiment, the slit 22b may be designed according to a preset pressure difference, that is, when the pressure difference between the cooling cavity and the outside is greater than the preset pressure difference, the slit 22b will automatically open the communication air inlet 21a, and when the pressure difference between the cooling cavity and the outside is reduced to the preset pressure difference, the slit 22b will automatically close and shut off the air inlet 21a, so that the pressure difference between the cooling cavity and the outside can be kept at the preset pressure difference, which is helpful for closing the object taking opening of the door body, and the preset pressure difference will not affect the user to pull the door body.

In an embodiment, referring to fig. 3 and 4, the housing 21 includes an inlet section 211 and a pressure relief section 212, the inlet section 211 is connected with the pressure relief section 212, the interiors of the inlet section 211 and the pressure relief section 212 define a cavity 21b together, an air inlet 21a is formed at one end of the inlet section 211 away from the pressure relief section 212, a pressure relief opening 21c is formed at one end of the pressure relief section 212 away from the inlet section 211, and the area of any flow cross section of the pressure relief section 212 is not greater than the area of the flow cross section of the inlet section 211. Illustratively, the shape of the inducer 211 is not limited and may be, for example, cylindrical. The pressure relief section 212 is connected to one end of the inlet section 211 far away from the air inlet 21a, and the area of any flow cross section of the pressure relief section 212 is not larger than the area of the flow cross section of the inlet section 211, that is, the flow cross section is reduced from the inlet section 211 to the pressure relief section 212, so that the pressure relief section can guide the flow of the gas, reduce the resistance of the gas in the flowing process, and improve the flowing efficiency of the gas.

In an embodiment, referring to fig. 4, the pressure relief section 212 includes two guide portions 2121 and two transition portions 2122, the two guide portions 2121 are disposed at intervals along a first direction, the two transition portions 2122 are connected to two ends of the two guide portions 2121 along a second direction, a distance between the two guide portions 2121 is gradually reduced along a gas flow direction, and a pressure relief opening 21c is formed at a tail end of the pressure relief section, wherein the first direction, the second direction and the gas flow direction are perpendicular to each other. For example, the guide portions 2121 are connected to the end of the inlet section 211 away from the air inlet 21a, the two guide portions 2121 are disposed at intervals along the first direction, the two transition portions 2122 are connected to the two ends of the two guide portions 2121 along the second direction and the area surrounded by the inlet section 211, and the distance between the two guide portions 2121 along the first direction is gradually reduced along the air flowing direction so as to be in a substantially wedge-shaped structure, so that the negative pressure of the refrigerating cavity can better squeeze the two guide portions 2121 to reduce the opening size of the pressure relief opening 21c, and further reduce the substances such as water vapor entering the refrigerating cavity and the refrigerating cavity from entering the cavity 21b to freeze.

In one embodiment, the outer side of the guide 2121 is planar. Thus, on the one hand, the outer side surface of the guide portion 2121 is a plane, and the consistency of the acting force of the negative pressure on the guide portion 2121 is better, so that the opening size of the pressure relief opening 21c is better reduced; on the other hand, the outer side surface of the guide portion 2121 is a plane, so that the pressure relief opening 21c is substantially in a rounded rectangle, and thus can be closed under negative pressure, so as to further reduce foreign matters entering the refrigerating cavity and substances such as water vapor in the refrigerating cavity from entering the cavity 21b for icing.

In one embodiment, referring to fig. 1, 2, 3 or 4, the refrigeration apparatus includes a shielding plate 4, one end of the shielding plate 4 is connected to the pressure relief opening 21c, and the other end of the shielding plate 4 is bent downwards at a distance from the pressure relief opening 21c to a side away from the air inlet 21 a. Illustratively, one end of the shielding plate 4 may be connected to the guide 2121 located at the upper side, and the other end of the shielding plate 4 is bent downward at a distance from the pressure release opening 21c to a side away from the air inlet 21a, so that frost, water vapor, and other substances may fall down the shielding plate 4 under the action of gravity and along the shielding plate 4, and condensation of the water vapor, and other substances at the pressure release opening 21c is reduced.

In one embodiment, the pressure relief device 2 is made of silica gel or rubber. The pressure relief device 2 may be made of silica gel, so that on one hand, the silica gel material is relatively stable and is not easy to react with other substances, and pollution to the refrigerating cavity is reduced; on the other hand, the silica gel material is softer, has good rebound resilience and tensile property, can adapt to the shape and the size of the ventilation channel, and has strong adaptability; in yet another aspect, the silica gel material has good temperature resistance and can be used in a low temperature environment. The pressure relief device 2 can be made of rubber, on one hand, the rubber material has excellent elasticity and rebound resilience, can keep a stable working state under various pressure and temperature conditions, and has good working stability; on the other hand, the rubber material has good resistance to most chemical substances and strong chemical substance corrosion resistance; in yet another aspect, the rubber material has excellent water barrier properties and is effective in preventing the penetration of moisture from the outside and the refrigeration cavity.

For example, in one embodiment, the good resilience of the pressure relief device 2 can be utilized, and the shielding plate 4 is driven by the disturbance pressure relief device 2 to remove the frost at the ventilation channel.

The above description is only of the preferred embodiments of the present application, and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. All such modifications, equivalents, alternatives, and improvements are intended to be within the spirit and scope of the application.

Claims

1. A refrigeration appliance, comprising:

The door body can selectively open or close the object taking opening;

2. The refrigeration appliance of claim 1 wherein said on-off valve is disposed in an interference fit with said housing; or alternatively

The switch valve and the shell are integrally formed.

3. The refrigeration unit as recited in claim 1 wherein said on-off valve is formed with a flexible surface formed with at least one slit which is kept closed, said slit being capable of communicating with or shutting off said air inlet depending on a pressure difference between said air inlet and said pressure relief port.

4. The refrigeration device of claim 1, wherein the housing comprises an inlet section and a pressure relief section, the inlet section is connected with the pressure relief section, the interior of the inlet section and the pressure relief section together define the cavity, one end of the inlet section away from the pressure relief section is formed with the air inlet, one end of the pressure relief section away from the inlet section is formed with the pressure relief opening, and the area of any flow cross section of the pressure relief section is not greater than the area of the flow cross section of the inlet section.

5. The refrigeration apparatus of claim 4 wherein said pressure relief section comprises two guide portions and two transition portions, said two guide portions being disposed at intervals along a first direction, said two transition portions being connected at both ends of said two guide portions along a second direction, a distance between said two guide portions being gradually reduced along a gas flow direction and forming said pressure relief opening at a trailing end thereof, wherein said first direction, said second direction and said gas flow direction are mutually perpendicular.

6. The refrigeration apparatus of claim 5 wherein the exterior side of the guide portion is planar.

7. The refrigeration unit as recited in claim 1 wherein said refrigeration unit includes a shield plate having one end connected to said pressure relief opening and the other end of said shield plate being bent downwardly at a distance from said pressure relief opening to a side thereof remote from said air inlet.

8. The refrigeration appliance according to claim 1, wherein the pressure relief device is made of silica gel or rubber.

9. The refrigeration appliance of claim 1 wherein said pressure relief device includes a drying member disposed in said cavity.

10. The refrigeration appliance of claim 9 wherein the drying member is a molecular sieve, zeolite or calcium oxide.