Constant-temperature and constant-humidity box body with pressure balancing function

Abstract

The utility model provides a constant-temperature and constant-humidity box body with a pressure balancing function. The constant-temperature and constant-humidity box body comprises a box body and a pressure adjusting device, the pressure adjusting device comprises an air inlet one-way valve, an air outlet one-way valve, a tee joint and an air pipe, one end of the air pipe is communicated in the box body, and the other end of the air pipe is connected with the tee joint. According to the constant-temperature and constant-humidity box, the one-way valve is arranged, so that the air pressure in the box is convenient to regulate and control, and the problems that an existing constant-temperature and constant-humidity box is difficult to open under high-pressure and low-pressure conditions and the pressure in the box is difficult to regulate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of incubators, in particular to a constant temperature and humidity box with pressure balancing. Background Art

[0002] For existing constant temperature and humidity products, if the box is well sealed, high temperature and high humidity test conditions will cause high air pressure in the box, which will result in a poor door closing experience when closing the door. Low temperature test conditions will cause low air pressure in the box, making it difficult to open the door. Users may encounter the following situations when using the product: Under high temperature and high humidity test conditions, after the test is terminated, if the box door is not opened, the box will be in a high temperature and high humidity state for a long time, which will greatly shorten the service life of the humidity sensor. Utility Model Content

[0003] The utility model aims to provide a constant temperature and humidity box which is convenient for adjusting the internal pressure and improving the internal environment of the box.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a constant temperature and humidity box with pressure balance, including a box and a pressure regulating device;

[0005] The pressure regulating device includes an air inlet check valve, an air outlet check valve, a three-way valve and an air pipe. One end of the air pipe is connected to the box body, and the other end is connected to the three-way valve. The three-way valve is also connected to the air inlet check valve and the air outlet check valve.

[0006] Furthermore, the air pipe is a stainless steel air pipe, and a thread is preset on the surface of one end of the stainless steel air pipe plug-in box, and two nuts arranged opposite to each other are screwed on the air pipe, and the two nuts are respectively located on both sides of the side plate of the box, that is, one is located outside the box, and the other is located inside the box, and are clamped on both sides of the side plate, so as to realize the connection and fixation of the stainless steel air pipe;

[0007] Sealing rubber rings are provided between the two nuts and the side plates.

[0008] Furthermore, the air intake one-way valve is connected to the three-way valve through a silicone tube.

[0009] Furthermore, the air pipe, the air inlet one-way valve, the air outlet one-way valve and the three-way connection are all screwed and fixed by means of threads.

[0010] Furthermore, the one-way valve is provided with a circle of limit platforms, and an O-ring is provided on the side of the limit platform facing the three-way connection.

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] 1. The constant temperature and humidity box of the utility model is equipped with a pressure regulating device and uses two one-way valves to realize the air intake and exhaust inside the box, so as to adjust the air pressure inside the box in real time and ensure a constant pressure inside.

[0013] 2. The constant temperature and humidity box of the utility model utilizes a stainless steel air pipe combined with a bolt sealing ring for fixing. For conventional constant temperature and humidity boxes, it can be installed while ensuring sealing. It only requires opening a hole of corresponding size on the back of the box. It is suitable for assembly of existing boxes and has a wide application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a constant temperature and humidity box with pressure balancing in an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the pressure regulating device in the embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the nut structure in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be further described below.

[0018] like Figure 1 As shown, the utility model provides a constant temperature and humidity box with pressure balance, including a box 7 and a pressure regulating device;

[0019] like Figure 2 As shown, the pressure regulating device includes an inlet check valve 1, an outlet check valve 2, a three-way valve 5 and an air pipe 4. The air pipe 4 is a stainless steel air pipe 4, which is opened on the box body 7. One end of the air pipe 4 is inserted into the box body 7 through the through hole. The end of the air pipe 4 inserted into the box body 7 is provided with a thread, as shown in FIG. Figure 3 As shown, two opposite nuts 8 are screwed on the threaded tube of the air pipe 4, and the two nuts 8 are respectively located on both sides of the side panels of the box body 7, that is, one is located outside the box body 7 and the other is located inside the box body 7, and are clamped on both sides of the side panels, thereby realizing the connection and fixation of the stainless steel air pipe 4; a sealing rubber ring 9 is provided between the two nuts 8 and the side panels.

[0020] The other end of the air pipe 4 is connected to the tee 5 , and the specific connection method is threaded screwing and fixing, and sealing can be achieved by arranging a gasket at the end of the air pipe 4 .

[0021] The other two ends of the tee 5 are connected to the inlet check valve 1 and the outlet check valve 2 respectively; the inlet check valve 1 is connected to the tee 5 through the silicone tube 3. The inlet check valve 1 and the outlet check valve 2 are screwed and fixed to the tee 5 by threads. The check valve is provided with a circle of limit platform, and the side of the limit platform facing the tee 5 is provided with an O-ring 6; thereby achieving the sealing between the check valve and the tee 5.

[0022] The working principle of the utility model is: when the internal air pressure is low, the door is opened, the gas check valve 1 works, the box is replenished with air, and the gas check valve 2 is closed; when the internal air pressure is high, the gas check valve 2 works, the box is exhausted, and the gas check valve 1 is closed; when the product stops running, under the condition of high temperature and high humidity in the box, the gas check valve 2 works, so that the humidity in the box is reduced in a relatively short time, so that the life of the humidity sensor is not affected.

[0023] The above are only preferred embodiments of the present invention and do not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, may make any equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which shall be deemed as the content of the technical solution of the present invention and still fall within the protection scope of the present invention.

Claims

1. A constant temperature and humidity box with pressure balance, characterized in that: It includes a box body and a pressure regulating device; The pressure regulating device includes an air inlet check valve, an air outlet check valve, a three-way valve and an air pipe. One end of the air pipe is connected to the box body, and the other end is connected to the three-way valve. The three-way valve is also connected to the air inlet check valve and the air outlet check valve.

2. The constant temperature and humidity box with pressure balance according to claim 1, characterized in that: The air pipe is a stainless steel air pipe, and a thread is preset on the surface of one end of the stainless steel air pipe plug box. Two nuts arranged opposite to each other are screwed on the air pipe. The two nuts are respectively located on both sides of the side plate of the box, that is, one is located outside the box and the other is located inside the box, and are clamped on both sides of the side plate, so as to realize the connection and fixation of the stainless steel air pipe; Sealing rubber rings are arranged between the two nuts and the side plates.

3. The constant temperature and humidity box with pressure balance according to claim 1, characterized in that: The air intake one-way valve is connected to the three-way valve through a silicone tube.

4. The constant temperature and humidity box with pressure balance according to claim 1, characterized in that: The air pipe, the air inlet one-way valve, the air outlet one-way valve and the three-way connection are all screwed and fixed to each other through threads.

5. The constant temperature and humidity box with pressure balance according to claim 1, characterized in that: The one-way valve is provided with a circle of limiting platforms, and an O-ring is provided on one side of the limiting platform facing the three-way connection.

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