CN113915813A

CN113915813A - Constant temperature freezer

Info

Publication number: CN113915813A
Application number: CN202010652554.5A
Authority: CN
Inventors: 李圣东
Original assignee: Shanghai Hongchuangxin Material Technology Co ltd
Current assignee: Shanghai Hongchuangxin Material Technology Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2022-01-11
Anticipated expiration: 2040-07-08
Also published as: CN113915813B

Abstract

The invention provides a constant-temperature freezing box, which relates to the technical field of constant-temperature boxes and comprises a box body, wherein a liquid nitrogen storage box and a placing disc are arranged in the box body, the placing disc is rotatably arranged on the top surface of the liquid nitrogen storage box, groove bodies are uniformly arranged on the placing disc along the circumferential direction, through holes are formed in the bottom of each groove body, and a circular tube for fixing a test tube is arranged in each groove body; one side of liquid nitrogen storage box is provided with the cylinder, the telescopic link of cylinder upwards extends the through-hole and gets into the tank body, the top surface of box is provided with the pan feeding pipe, the pan feeding pipe is located directly over the cylinder. The middle part of the placing plate is fixed with a connecting shaft, and the upper end of the connecting shaft extends out of the top surface of the box body and is provided with a handle. The invention is used for solving the problem that in the process of taking and placing test tubes or other frozen articles, the temperature in the box body is increased due to heat entering the box body, and the constant temperature state in the box body is changed.

Description

Constant temperature freezer

Technical Field

The invention relates to the technical field of thermostats, in particular to a constant-temperature freezer.

Background

In a biological laboratory, cells, bacteria or viruses are stored and can be stored only at low temperature, and the cells, the bacteria or the viruses are usually placed in a test tube and then stored in a liquid nitrogen tank for long-term active storage, and when the cells, the bacteria or the viruses are required to be used, the cells, the bacteria or the viruses are taken out, thawed and rewarming for use.

In the prior art, a constant-temperature freezing box can keep constant temperature for a long time in the storage process, but when the box is opened to take and place stored objects, a box door needs to be opened, so that heat enters the box body, and the temperature in the box body is rapidly increased, so that the survival rate of cells, bacteria or viruses is influenced; and because the test tube belongs to fragile article, need extra care when getting and put, otherwise very easily bump the garrulous with the test tube, consequently need expend longer time when getting and put, lead to the temperature rise in the box more and more.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a constant temperature freezer, which is used to solve the problem that the constant temperature state in the freezer is changed due to the temperature rise in the freezer body caused by the heat entering the freezer body in the process of taking and placing test tubes or other frozen articles.

In order to achieve the above and other related purposes, the invention provides a constant temperature freezing box, which comprises a box body, wherein a liquid nitrogen storage box and a placing disc are arranged in the box body, the placing disc is rotatably arranged on the top surface of the liquid nitrogen storage box, groove bodies are uniformly arranged on the placing disc along the circumferential direction, through holes are formed in the bottom of each groove body, a circular tube for fixing a test tube is placed in each groove body, and after the test tube is placed in the circular tube, the top end of the test tube extends out of the top surface of the circular tube, so that the test tube is convenient to take and place;

an air cylinder is arranged on one side of the liquid nitrogen storage box, a telescopic rod of the air cylinder extends upwards to penetrate through the through hole to enter the tank body, a feeding pipe is arranged on the top surface of the tank body, and the feeding pipe is positioned right above the air cylinder;

preferably, the box adopts transparent material to make, is convenient for look over the inside test tube of box, the diameter of pan feeding pipe equals the diameter of pipe, the top of pipe is provided with the upper cover, the diameter of upper cover equals the diameter of pipe.

In an embodiment of the invention, based on the above embodiments, a connecting shaft is fixed in the middle of the placing tray, the upper end of the connecting shaft extends out of the top surface of the box body and is provided with a handle, specifically, the connecting shaft is rotatably connected with the top surface of the box body, the placing tray can be rotated by the handle, each groove body is sequentially rotated to be right below the feeding tube, and the test tube is placed or taken out.

In an embodiment of the invention, the liquid nitrogen storage is provided with an air outlet pipeline, the air outlet pipeline is provided with a control valve, and nitrogen is output through the control valve to cool the box body.

In an embodiment of the present invention, a groove is disposed at the bottom of the circular tube, and the diameter of the groove is equal to the diameter of the telescopic rod;

in an embodiment of the present invention, the outer wall of the feeding pipe is connected to the cover body in a threaded manner, and the inner wall of the feeding pipe is provided with four arc-shaped pieces, and the arc-shaped pieces are made of a soft material, specifically, a soft plastic.

In an embodiment of the present invention, a temperature sensor is disposed on an inner surface of the box body for detecting a temperature inside the box body, and a control panel is disposed on an outer side surface of the box body, and the control panel is electrically connected to the cylinder and the control valve.

As described above, the constant temperature freezer of the present invention has the following advantageous effects:

1. according to the test tube placing device, the telescopic rod of the air cylinder penetrates through the through hole upwards and extends into the groove, the circular tube continues to extend upwards to eject the circular tube out of the feeding tube, the test tube is placed into the circular tube after the circular tube extends out of the feeding tube, and the position of the test tube is located by the circular tube, so that the test tube is prevented from being damaged in the placing process.

2. According to the invention, as the diameters of the upper cover, the circular tube and the feeding tube are equal, when the upper cover and the circular tube pass through the feeding tube, the feeding tube can be sealed to prevent gas from entering the box body and changing the temperature in the box body, and meanwhile, the arc-shaped sheet is arranged on the inner wall of the feeding tube, when the circular tube returns to the box body, the arc-shaped sheet can isolate the temperature, so that the constant temperature state is prevented from being changed due to taking and placing of articles.

Drawings

Fig. 1 is a schematic view showing an appearance structure of a thermostatic freezing chamber disclosed in an embodiment of the present invention.

Fig. 2 is a schematic view showing the internal structure of the thermostatic freezing chamber disclosed in the embodiment of the invention.

Fig. 3 is a schematic structural view of the tank disclosed in the embodiment of the present invention.

Fig. 4 is a schematic structural view of the circular tube disclosed in the embodiment of the present invention.

Fig. 5 is an external view of the thermostatic freezing chamber disclosed in the embodiment of the invention when taking and placing test tubes.

Fig. 6 is a view showing an internal structure corresponding to fig. 5 disclosed in the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a feeding tube disclosed in the embodiment of the present invention.

Description of the element reference numerals

1-a box body; 2-a liquid nitrogen storage tank; 21-a control valve; 3-placing a tray; 4-a groove body; 5-a through hole; 6-round tube; 61-grooves; 62-upper cover; 7-a feeding pipe; 71-a cover body; 72-arc piece; 8-a connecting shaft; 9-a handle; 10-a temperature sensor; 11-a control panel; 12-a test tube; 13-cylinder.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 7. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 and 2, the invention provides a constant temperature freezing box, which comprises a box body 1, wherein a liquid nitrogen storage box 2 and a placing tray 3 are arranged in the box body 1, the placing tray 3 is rotatably arranged on the top surface of the liquid nitrogen storage box 2, referring to fig. 4, groove bodies 4 are uniformly arranged on the placing tray 3 along the circumferential direction, through holes 5 are arranged at the bottom of the groove bodies 4, circular tubes 6 for fixing test tubes 12 are arranged in the groove bodies 4, and after the test tubes 12 are placed in the circular tubes 6, the top ends of the test tubes 12 extend out of the top surfaces of the circular tubes 6, so that the test tubes 12 can be conveniently taken and placed;

an air cylinder 13 is arranged on one side of the liquid nitrogen storage box 2, a telescopic rod of the air cylinder 13 extends upwards through the through hole 5 to enter the groove body 4, a feeding pipe 7 is arranged on the top surface of the box body 1, and the feeding pipe 7 is positioned right above the air cylinder;

preferably, the box body 1 is made of transparent materials, so that the test tube 12 in the box body 1 can be conveniently checked, the diameter of the feeding tube 7 is equal to that of the circular tube 6, the top end of the circular tube 6 is provided with the upper cover 62, and the diameter of the upper cover 62 is equal to that of the circular tube 6;

in this embodiment, because the diameters of the upper cover 62, the circular tube 6 and the feeding tube 7 are equal, when the upper cover 62 and the circular tube 6 pass through the feeding tube 7, the feeding tube 7 can be sealed to prevent gas from entering the inside of the box body 1 and changing the temperature in the box body 1.

Based on above embodiment, the middle part of placing dish 3 is fixed with connecting axle 8, the upper end of connecting axle 8 extends 1 top surface of box and is provided with handle 9, and is specific, connecting axle 8 rotates with the top surface of box 1 to be connected, utilizes the rotatable dish 3 of placing of handle 9, rotates every cell body 4 to pan feeding pipe 7 under in proper order, places or takes out test tube 12.

Referring to fig. 3, based on the above embodiment, the liquid nitrogen storage is provided with an air outlet pipeline, the air outlet pipeline is provided with a control valve 21, and nitrogen is output through the control valve 21 to cool the inside of the box body 1.

Referring to fig. 2, based on the above embodiment, the bottom of the circular tube 6 is provided with a groove 61, and the diameter of the groove 61 is equal to the diameter of the telescopic rod;

in this embodiment, the telescopic link of the cylinder upwards passes through the through hole 5 and extends into the groove 61, and continues to upwards extend to upwards eject the circular tube 6 out of the feeding tube 7, and then the test tube 12 is placed in the circular tube 6.

Referring to fig. 7, based on the above embodiment, the outer wall of the feeding pipe 7 is connected with the cover 71 in a threaded manner, the inner wall of the feeding pipe 7 is provided with four arc-shaped pieces 72, and the arc-shaped pieces 72 are made of soft materials, specifically, soft plastics;

in this embodiment, four arc pieces 72 constitute a complete circular, play the effect of isolated temperature, when the body rebound, upwards jack-up arc piece 72.

Based on the above embodiment, the inner surface of the box body 1 is provided with the temperature sensor 10 for detecting the temperature in the box body 1, the outer side surface of the box body 1 is provided with the control panel 11, and the control panel 11 is electrically connected with the cylinder and the control valve 21.

The working principle is as follows: referring to fig. 5 and 6, the control valve 21 is opened, the temperature in the box body 1 is adjusted to the required temperature, the handle 9 is used for rotating the turntable, one of the groove bodies 4 is rotated to the position above the cylinder, then the cylinder is opened, the telescopic rod extends upwards to enter the groove 61, the circular tube 6 is pushed upwards, the arc-shaped sheet 72 is pushed upwards by the circular tube 6, and then the circular tube 6 is covered by the upper cover 62 after the test tube 12 is placed in the circular tube 6; then the telescopic rod descends, and the round pipe 6 returns; when it is desired to remove the tube 12, the tube 12 may be removed according to the above steps.

In conclusion, the round tube is ejected upwards from the top surface of the box body, so that the temperature change caused by taking and placing the test tube is avoided, and a good constant temperature effect is achieved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A constant-temperature freezing box is characterized by comprising a box body, wherein a liquid nitrogen storage box and a placing disc are arranged in the box body, the placing disc is rotatably arranged on the top surface of the liquid nitrogen storage box, groove bodies are uniformly arranged on the placing disc along the circumferential direction, through holes are formed in the bottom of each groove body, and a circular tube for fixing a test tube is arranged in each groove body;

one side of liquid nitrogen storage box is provided with the cylinder, the telescopic link of cylinder upwards extends the through-hole and gets into the tank body, the top surface of box is provided with the pan feeding pipe, the pan feeding pipe is located directly over the cylinder.

2. A thermostatic freezer according to claim 1, characterized in that: the middle part of the placing plate is fixed with a connecting shaft, and the upper end of the connecting shaft extends out of the top surface of the box body and is provided with a handle.

3. A thermostatic freezer according to claim 1, characterized in that: the liquid nitrogen storage is provided with an air outlet pipeline, and the air outlet pipeline is provided with a control valve.

4. A thermostatic freezer according to claim 1, characterized in that: the bottom of pipe is provided with the recess, the diameter of recess equals with the diameter of telescopic link.

5. A thermostatic freezer according to claim 3, characterized in that: the outer wall threaded connection of pan feeding pipe has the lid, and the inner wall of pan feeding pipe is provided with four arcs, the arc adopts soft material.

6. A thermostatic freezer according to claim 1, characterized in that: the internal surface of box is provided with temperature sensor, and the box lateral surface is provided with control panel, control panel and cylinder and control valve electric connection.