CN214065411U

CN214065411U - Medical low-temperature freezer door

Info

Publication number: CN214065411U
Application number: CN202022824736.4U
Authority: CN
Inventors: 谭素琼; 董四海; 李航宇
Original assignee: Zhejiang Xingxing Refrigeration Co Ltd
Current assignee: Zhejiang Xingxing Refrigeration Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-27
Anticipated expiration: 2030-11-30

Abstract

The utility model belongs to the technical field of refrigeration plant, concretely relates to medical low temperature freezer chamber door. The problem of connection stability between a check valve and a door plate in a box door of an existing medical low-temperature freezing box is solved. This medical low temperature freezer chamber door, including inner panel, planking, communicating pipe and check valve, the check valve includes the valve body of pegging graft with communicating pipe, has seted up the through-hole on the planking, the valve body is installed in the through-hole, communicating pipe is L shape, its characterized in that, the terminal surface of communicating pipe one end supports and leans on the inner wall of inner panel, and joint groove one has been seted up to the one end of pegging graft with the valve body of communicating pipe, be equipped with joint lug one on the valve body, valve body and communicating pipe circumference location are realized to joint lug joint in joint groove one, the check valve still including the valve case that has the case, the valve case links firmly with the planking with the valve body spiro union. The utility model discloses promote the stability of being connected between check valve and the door plant.

Description

Medical low-temperature freezer door

Technical Field

The utility model belongs to the technical field of refrigeration plant, concretely relates to medical low temperature freezer chamber door.

Background

Refrigeration equipment is equipment used for refrigeration operation. Different refrigeration methods use different equipment, and the most widely used at present is vapor compression refrigeration, and the main equipment of the method is a compressor, a condenser, an evaporator and a throttle valve. Compressors are used to compress and deliver refrigerant vapor, with piston and centrifugal applications being the broadest.

With the advancement of science and technology, refrigeration is no longer limited to the level of household refrigerators at-20 ℃, and particularly medical low-temperature freezers need to reach lower temperatures: the low temperature of minus 40 ℃ to minus 60 ℃, the ultra-low temperature of minus 86 ℃ and the ultra-low temperature of minus 150 ℃ are used and developed rapidly at home and abroad, but the technical problem that the door of a large-capacity low-temperature storage box is difficult to open due to the over-low refrigeration temperature is generated. The technical reason for difficult door opening is that because the temperature in the refrigerator is low (generally-60 to-150 ℃), the heat enters the refrigerator when the door is opened, the cold is lost, when the door is closed again, the temperature of the gas in the refrigerator is reduced, the gas pressure is reduced, according to the principle of thermal expansion and cold contraction, the external gas pressure is greater than the gas pressure in the refrigerator, and a large pressure difference is generated, so that the door body is difficult to open again, and the articles in the refrigerator can not be obtained in a short time.

For example, chinese patent application No. 201410220453.5, entitled air pressure balance structure for preventing frosting on cryogenic equipment, although this structure can realize the balanced box external air pressure, the connection is blocked through the rubber between air pressure balance valve and the door plant, this kind of connected mode makes the connection between air pressure balance valve and the chamber door unstable, and how to promote the connection stability between air pressure balance valve and the door plant is a technical problem that needs to solve.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a medical low-temperature freezer chamber door, which aims to solve the technical problems that: how to improve the stability of the connection between the check valve and the door panel.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a medical low temperature freezer chamber door, includes inner panel, planking, communicating pipe and check valve, and the check valve includes the valve body of pegging graft with communicating pipe, has seted up the through-hole on the planking, the valve body is installed in the through-hole, communicating pipe is L shape, its characterized in that, the terminal surface of communicating pipe one end supports and leans on the inner wall of inner panel, and joint groove one has been seted up to the one end of pegging graft with the valve body of communicating pipe, be equipped with joint lug one on the valve body, valve body and communicating pipe circumference location are realized to joint lug joint in joint groove one, and the check valve is still including the case seat that has the case, the case seat links firmly with the valve body spiro union and with the planking.

In the manufacturing and assembling link of the door of the medical low-temperature freezer, the valve body of the one-way valve is firstly placed in the through hole of the outer plate, then the communicating pipe is inserted on the valve body, the first clamping lug on the valve body is clamped with the first clamping groove on the communicating pipe, then the inner plate is connected with the outer plate, one end of the communicating pipe is abutted against the inner wall of the inner plate, and finally the valve core seat is screwed on the valve body; communicating pipe is that the inner wall of L shape and inner panel supports and pegs graft with the valve body, makes the rotatory degree of freedom of communicating pipe restricted, matches through joint lug one and joint groove one between valve body and the communicating pipe and restrict relative rotation between them for guaranteed that the disk seat is fixed when the relative disk seat of case rotates the spiro union, with the case and disk seat spiro union back, support the face of supporting on the case and support on the surface of bounding wall, compare in connecting the check valve on the chamber door through the rubber end cap, the utility model provides a stability of being connected between check valve and the door plant.

In the medical low-temperature freezer door, the inner wall of the through hole is provided with a second clamping groove, and the top end of the valve body is provided with a second clamping lug which is clamped with the second clamping groove. Through the setting of joint groove two and joint lug two, the valve body can be better prevent to take place to rotate when the valve core case spiro union makes the spiro union between valve core case and the valve body be connected more reliably, has promoted the stability of being connected between check valve and the door plant.

In the medical low-temperature freezer door, the valve core seat is provided with an abutting surface abutting against the outer surface of the outer plate, the valve body is provided with an end surface abutting against the inner wall of the outer plate, and the end surface is further convexly provided with a positioning ring positioned in the through hole. The valve body is positioned through the positioning ring and the second clamping lug when being assembled on the through hole in the outer plate, after the valve core seat is in threaded connection with the valve body, the end face of the valve body is abutted against the inner wall of the outer plate, the abutting face on the valve core seat is abutted against the outer surface of the outer plate, and the outer plate is clamped through the valve body and the valve core seat, so that the connection between the check valve and the door plate is more stable.

In the medical low-temperature freezer door, the second clamping lug is arranged on the end surface of the valve body, which is abutted against the inner surface of the outer plate. After the second clamping lug is aligned with the second clamping groove in the outer plate and inserted, the end face of the valve body abuts against the inner plate, and positioning and assembling of the valve body on the outer plate are completed.

In the medical low-temperature freezer door, one end of the communicating pipe, which is abutted against the inner plate, is in a flaring shape. One end of the communicating pipe is flared to enable the communicating pipe to receive the rotating force from the one-way valve, so that a larger limit can be formed between the communicating pipe and the inner plate, and the connection between the one-way valve and the door plate is more stable.

In the medical low-temperature freezer door, the end of the communicating pipe abutting against the inner plate is provided with a turning edge abutting against the inner wall of the inner plate along the circumferential direction. The arrangement of the turning edge increases the stress area between the communicating pipes, further prevents the communicating pipes from rotating, and enables the connection between the one-way valve and the door plate to be more stable.

Compared with the prior art, the medical low-temperature freezer door has the following advantages:

1. through the spiro union between case seat and the disk seat to support with the planking surface through the support face on the case seat and lean on, make the connection between check valve and the wallboard more stable.

2. The outer plate is clamped by the valve body and the valve core seat, so that the connection between the one-way valve and the door plate is more stable.

3. Communicating pipe is L shape and the inner wall of inner panel supports and leans on and pegs graft with the valve body, makes the rotatory degree of freedom of communicating pipe restricted, can prevent to take place to rotate communicating pipe in process of production, effectively improves the accuracy of assembly in the process of production.

Drawings

Fig. 1 is a cross-sectional view of a door of a medical cryofreezer.

Fig. 2 is an exploded view of a portion of the components of the door of a medical cryofreezer.

Fig. 3 is a perspective view of the communication pipe and the valve body.

Fig. 4 is a perspective view of the valve core seat.

In the figure, 1a, an inner plate; 1b, an outer plate; 1b1, vias; 1b2 and a second clamping groove; 2. a communicating pipe; 2a, a first clamping groove; 2b, turning over edges; 3. a one-way valve; 3a, a valve body; 3a1, a first clamping bump; 3a2 and a clamping convex block II; 3a3, end face; 3a4, a retaining ring; 3b, a valve core seat; 3b1, valve core; 3b2, abutting surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 to 4, the medical low-temperature freezer door comprises an inner plate 1a, an outer plate 1b, a communicating pipe 2 and a check valve 3, wherein the check valve 3 comprises a valve body 3a and a valve core seat 3b with a valve core 3b1, the valve core seat 3b is screwed on the valve body 3a, the outer plate 1b is provided with a through hole 1b1 for installing the valve core seat 3b, and the valve core seat 3b is provided with an abutting surface 3b2 abutting against the outer surface of the outer plate 1 b. Communicating pipe 2 is L shape and the one end of communicating pipe 2 is pegged graft on valve body 3a, and the other end supports and leans on the inner wall of inner panel 1a, and joint groove 2a has been seted up to the one end that communicating pipe 2 and valve body 3a peg graft, and joint groove 2a runs through terminal surface 3a3 of communicating pipe 2, is equipped with the joint lug 3a1 with joint groove 2a looks joint on the valve body 3 a.

As shown in fig. 1 to 4, the valve body 3a has an end face 3a3 abutting against the inner wall of the outer plate 1b, a positioning ring 3a4 positioned in the through hole 1b1 is further convexly arranged on the end face 3a3, a second clamping groove 1b2 is arranged on the inner wall of the through hole 1b1, and a second clamping protrusion 3a2 clamped with the second clamping groove 1b2 is arranged on the end face 3a3 of the valve body 3 a.

As shown in fig. 1 to 4, in the manufacturing and assembling process of the medical low-temperature freezer door, the valve body 3a of the check valve 3 is placed in the through hole 1b1 of the outer plate 1b, the communicating tube 2 is inserted into the valve body 3a, the first clamping bump 3a1 on the valve body 3a is clamped with the first clamping groove 2a on the communicating tube 2, then the inner plate 1a is connected with the outer plate 1b, at this time, one end of the communicating tube 2 abuts against the inner wall of the inner plate 1a, and finally, the valve core seat 3b is screwed on the valve body 3 a; the communicating pipe 2 is L-shaped, abuts against the inner wall of the inner plate 1a and is inserted into the valve body 3a, so that the rotational freedom degree of the communicating pipe 2 is limited, the valve body 3a and the communicating pipe 2 are matched with each other through the first clamping lug 3a1 to limit the relative rotation of the first clamping lug and the first clamping groove 2a, so that the valve seat is fixed when the valve core seat 3b is screwed with the valve seat in a rotating manner, through the arrangement of the second clamping groove 1b2 and the second clamping lug 3a2, the valve body 3a can better prevent the valve core seat 3b from rotating in the screwing manner, after the valve core seat 3b is screwed with the valve seat, the abutting surface 3b2 on the valve core seat 3b abuts against the outer surface of the coaming, the end surface 3a3 of the valve body 3a abuts against the inner wall of the outer plate 1b, the abutting surface 3b2 on the valve core seat 3b abuts against the outer surface of the outer plate 1b, the outer plate 1b is clamped through the valve body 3a and the valve core seat 3b, compared with the one-way that the check valve 3 is connected to a door through a rubber plug, the utility model provides the stability of being connected between 3 check valves and the door plant is promoted.

Further, as shown in fig. 1 to 4, an end of the communication pipe 2 abutting against the inner plate 1a is flared, specifically, conical, and an end of the communication pipe 2 abutting against the inner plate 1a is provided with a turned edge 2b abutting against an inner wall of the inner plate 1a along a circumferential direction thereof. The one end of communicating pipe 2 is flaring form makes communicating pipe 2 receive come from the revolving force of check valve 3 can with inner panel 1a between form bigger spacing, make the connection between check valve 3 and the door plant more stable, turn over along 2 b's setting and make the lifting surface area increase between communicating pipe 2, further prevent the rotation of communicating pipe 2, make the connection between check valve 3 and the door plant more stable.

Example two

The present embodiment is substantially the same as the above-described embodiments, and the difference is that in the present embodiment, the first snap groove 2a does not penetrate through the end surface 3a3 of the linkage tube and is in a hole shape, and the arrangement of the first snap groove 2a in the present embodiment can also prevent the communication tube 2 from moving along the axial direction of the check valve 3, and further limit the communication tube 2. The second clamping convex block 3a2 is arranged on the side wall of the valve body 3 a.

EXAMPLE III

The embodiment is substantially the same as the embodiment, and the difference is that in the embodiment, the outer plate 1b is provided with a clamping hole, the valve core base 3b is provided with a clamping block clamped in the clamping hole, the end of the clamping block is in a barb shape and can be hooked and fixed on the outer plate 1b, when assembling, the valve core base 3b and the valve body 3a are fixed on the outer plate 1b, then the communicating pipe 2 is inserted into the valve body 3a and the position of the communicating pipe is adjusted, and then the inner plate 1a is covered and buckled on the outer plate 1 b.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A medical low-temperature freezer door comprises an inner plate (1a), an outer plate (1b), a communicating pipe (2) and a check valve (3), wherein the check valve (3) comprises a valve body (3a) spliced with the communicating pipe (2), the outer plate (1b) is provided with a through hole (1b1), the valve body (3a) is arranged in the through hole (1b1), the communicating pipe (2) is L-shaped, the medical low-temperature freezer door is characterized in that the end face of one end of the communicating pipe (2) is abutted against the inner wall of the inner plate (1a), a clamping groove I (2a) is arranged at the end of the communicating pipe (2) spliced with the valve body (3a), the valve body (3a) is provided with a clamping convex block I (3a1), the clamping convex block I (3a1) is clamped in the clamping groove I (2a) to realize circumferential positioning of the valve body (3a) and the communicating pipe (2), and the check valve (3) further comprises a valve core seat (3b) with a valve core (3b1), the valve core seat (3b) is in threaded connection with the valve body (3a) and is fixedly connected with the outer plate (1 b).

2. The medical low-temperature freezer door according to claim 1, characterized in that the inner wall of the through hole (1b1) is provided with a second clamping groove (1b2), and the top end of the valve body (3a) is provided with a second clamping projection (3a2) clamped with the second clamping groove (1b 2).

3. The door of the medical cryobox according to claim 2, wherein the valve core seat (3b) is provided with an abutting surface (3b2) abutting against the outer surface of the outer plate (1b), the top end of the valve body (3a) is provided with an end surface (3a3) abutting against the inner wall of the outer plate (1b), and the end surface (3a3) is further provided with a positioning ring (3a4) protruding and located in the through hole (1b 1).

4. The door of the medical low-temperature freezer according to claim 3, wherein the second clamping lug (3a2) is arranged on the end surface (3a3) of the valve body (3a) which abuts against the inner surface of the outer plate (1 b).

5. The medical low-temperature freezer door according to claim 1, characterized in that the end of the communicating pipe (2) abutting against the inner plate (1a) is flared.

6. The medical low-temperature freezer door according to claim 5, characterized in that the end of the communicating pipe (2) abutting against the inner plate (1a) is provided with a turned edge (2b) abutting against the inner wall of the inner plate (1a) along the circumferential direction.