CN111974467A

CN111974467A - Humidifier of programmable damp-heat alternating test box

Info

Publication number: CN111974467A
Application number: CN202010906629.8A
Authority: CN
Inventors: 陈江; 陈国周
Original assignee: Shanghai Bolu Instrument Co ltd
Current assignee: Shanghai Bolu Instrument Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-11-24
Anticipated expiration: 2040-09-01
Also published as: CN111974467B

Abstract

The invention relates to the technical field of humidifiers, in particular to a humidifier of a programmable damp-heat alternating test chamber, which comprises a box body with a built-in cavity structure, wherein the box body comprises an outer-layer packaging shell, an inner-layer heat-conducting shell and a heat-insulating layer arranged between the packaging shell and the heat-conducting shell; the flow guide pipe comprises an inlet part, a curve part and an outlet part; the heating plate is arranged outside the heat conduction shell and used for directly or indirectly heating the heat conduction shell and the flow guide pipe so as to enable water in the flow guide pipe to be gasified to form steam.

Description

Humidifier of programmable damp-heat alternating test box

Technical Field

The invention relates to the technical field of humidifiers, in particular to a humidifier of a programmable damp-heat alternating test box.

Background

The humidification process of the programmable damp-heat alternating test box actually refers to the improvement of the water vapor partial pressure, the initial humidification mode is to spray water to the inner wall of the test box, and the water surface saturation pressure can be controlled by controlling the water temperature. The early onset of this method, which occurred in the fifties of the last century, was that the water on the wall surface formed a large surface on which the relative humidity in the test chamber was raised only by the pressure of the water vapor entering the chamber by diffusion.

The humidity control of the test box is realized by simply adjusting the switching value through a mercury electric contact method conductive meter, the control adaptability to the water temperature of the large-lag hot water tank is poor, the control transition process is long, the requirement of alternating damp heat for high humidification quantity cannot be met, and more importantly, when the box wall is sprayed, the problem that water drops on the ground cannot be sprayed on the test piece to cause pollution to the test piece in different degrees is always avoided. So that there is also a demand for drainage of the tank interior. This method is quickly replaced by steam humidification and tray humidification. This method has some advantages.

Although the control transition process of the programmable damp-heat alternating test box is longer, the humidity fluctuation after the system is stabilized is smaller, and the programmable damp-heat alternating test box is more suitable for being used for constant damp-heat tests. In addition, the moisture in the humidifying process is not overheated, so that the additional heat in the system is not increased. And when the temperature of the sprayed water is controlled to be lower than the temperature of the key point required by the test, the sprayed water can achieve the dehumidification effect.

Now, as the damp-heat test develops from constant damp-heat to alternating damp-heat, the reaction capability of quick humidification is required, and the spraying humidification cannot meet the requirement, so that a large number of methods of steam humidification and tray humidification of the programmable damp-heat alternating test box are adopted and developed.

The heat evaporation humidifying method is also called as an electric heating humidifier, low-pressure steam is directly injected into a test space for humidifying, the humidifying capacity of the method is high, the humidifying control is sensitive, and forced humidifying can be easily realized particularly when the temperature is reduced. However, the method has the defects of high power consumption, low safety coefficient, easy scaling on the humidifier, incapability of dry burning and the like.

Disclosure of Invention

In order to solve the problems, the invention provides a humidifier of a programmable damp-heat alternating test chamber, which has the characteristics of large evaporation surface area, high humidification efficiency, low power consumption, safety and reliability.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a humidifier of a programmable damp-heat alternating test chamber comprises a chamber body with a built-in cavity structure, wherein the chamber body comprises an outer packaging shell, an inner heat-conducting shell and a heat-insulating layer arranged between the packaging shell and the heat-conducting shell;

the flow guide pipe comprises an inlet part, a curve part and an outlet part, the curve part is arranged in the heat conduction shell, and the inlet part and the outlet part penetrate out of the box body;

the peristaltic pump is arranged at one end of the inlet part of the flow guide pipe;

the sintering head is arranged at one end of the outlet part of the flow guide pipe;

and the heating sheet is arranged on the outer side of the heat conduction shell and used for directly or indirectly heating the heat conduction shell and the flow guide pipe so as to ensure that water in the flow guide pipe is gasified to form steam.

Preferably, the draft tube further comprises a backflow part, the backflow part is connected with the inlet part and the outlet part, and the curve part is matched to form a circulating structure.

Preferably, the curve portion has a "∞" structure.

Preferably, the box body is provided with an inlet pipe orifice and an outlet pipe orifice, the inlet part of the flow guide pipe penetrates through the inlet pipe orifice, and the outlet part of the flow guide pipe penetrates through the outlet pipe orifice.

Preferably, the heat-conducting shell and the flow guide pipe are made of copper materials.

Preferably, the inlet and outlet spouts are fitted with sealing caps.

Preferably, the inner wall of the heat preservation layer is provided with a notch groove, and the heating sheet is arranged in the notch groove.

The technical scheme of the invention has the following beneficial technical effects:

in the actual application process, the invention greatly improves the use efficiency of the programmable damp-heat alternating test box, the power consumption of the whole machine, the safety factor and the quality, simultaneously, the technology also meets the requirements on the uniformity and the precision control of a humidity field in the experimental specification, the redundant unvaporized water is recycled, and the water vapor is enabled to enter the test box more uniformly by matching with the sintering head, so that the redundant water is prevented from rushing to the test box.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention.

Reference numerals:

1. a package housing; 2. a thermally conductive housing; 3. a heat-insulating layer; 4. a flow guide pipe; 5. a peristaltic pump; 6. a heating plate; 7. an inlet portion; 8. an outlet portion; 9. a reflux section; 10. an outlet pipe orifice; 11. and sintering the head.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The invention provides a humidifier of a programmable damp-heat alternating test chamber, which comprises the following scheme:

reference is made to fig. 1-3.

The shell of the heat-conducting shell 2 is provided with a hole a and a hole A, the flow guide pipe 4 is arranged in an inner cavity defined by the shell of the heat-conducting shell 2, an inlet part 7 of the flow guide pipe 4 penetrates out of the hole a, an outlet part 8 penetrates out of the hole A, and the part of the flow guide pipe 4 positioned in the inner cavity is fixed in a certain curve shape, for example, as shown in fig. 1, a backflow part 9 can be integrally formed with the flow guide pipe 4, or can be an independent part connected with the flow guide pipe 4, so that the flow guide pipe 4 forms a circulating structure. Fixing the heat-conducting fins 6 outside the heat-conducting shell 2, wrapping the heat-conducting shell 2 with the heat-insulating layer 3, and then placing the heat-conducting shell 2 in the packaging shell 1 for fixing, wherein the heat-insulating layer 3 and the packaging shell 1 are also provided with holes for the honeycomb duct 4 to pass through, for example, the heat-insulating layer 3 is provided with a hole B and a hole B, and the packaging shell 1 is provided with a hole C and a hole C; wherein holes a, B, C form the inlet nozzle and holes a, B, C form the outlet nozzle 10 (fig. 2). One end of an inlet part 7 of the draft tube 4 penetrating through the tube inlet is provided with a peristaltic pump 5, and one end of an outlet part 8 of the draft tube 4 penetrating through the tube outlet 10 is provided with a sintering head 11.

Further, the sealing covers are assembled on the pipe inlet and the pipe outlet 10, so that the sealing performance of the surface of the humidifier is effectively improved.

The inner wall of the heat preservation layer 3 is provided with a notch groove, and the heating sheet 6 is arranged in the notch groove, which can refer to fig. 3. The internal space is saved, and the whole volume is reduced.

The working principle is as follows: when the humidity in the test box is lower than the set humidity, the heating sheet 6 starts to heat, the temperature of the heat conduction shell 2 and the flow guide pipe 4 is heated to a certain temperature, the peristaltic pump 5 starts to work, a certain amount of water is added from the inlet part 7 of the flow guide pipe 4, the peristaltic pump 5 stops working when adding the specified amount of water, the heating sheet 6 stops heating, the entering water is gasified at high temperature to form water vapor, the water vapor enters the test box through the outlet part 8 and the sintering head 11, the set humidity is increased, if the surplus water is not gasified, the water returns to the flow guide pipe 4 again through the backflow part 9, the sintering head 11 can enable the steam to enter the test box more uniformly, and the surplus water can be prevented from rushing into the test box.

It should be noted that two or more sintering heads 11 may be provided, and a multi-way joint may be used to connect a plurality of sintering heads 11 with the outlet of the draft tube 4.

The curved portion of the duct 4 located in the inner cavity of the heat conductive housing 2 has a specific fixed shape like an "∞" structure shown in fig. 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A humidifier of a programmable humid heat alternating test chamber is characterized by comprising:

the box body is internally provided with a cavity structure and comprises an outer-layer packaging shell (1), an inner-layer heat-conducting shell (2) and a heat-insulating layer (3) arranged between the packaging shell (1) and the heat-conducting shell (2);

the flow guide pipe (4) comprises an inlet part (7), a curve part and an outlet part (8), the curve part is arranged in the heat conduction shell (2), and the inlet part (7) and the outlet part (8) penetrate out of the box body;

the peristaltic pump (5) is arranged at one end of the inlet part (7) of the draft tube (4);

a sintering head (11) mounted at one end of the outlet part (8) of the draft tube (4);

and the heating sheet (6) is arranged on the outer side of the heat conduction shell (2) and is used for directly or indirectly heating the heat conduction shell (2) and the flow guide pipe (4) so as to enable water in the flow guide pipe (4) to be gasified to form water vapor.

2. A humidifier for a programmable humid and hot alternating test chamber as claimed in claim 1, wherein the flow guide tube (4) further comprises a backflow portion (9), the backflow portion (9) connects the inlet portion (7) and the outlet portion (8), and the curved portion is matched to form a circular structure.

3. The humidifier for a programmable humid heat alternating test chamber as claimed in claim 1, wherein said curved portion is of a "∞" structure.

4. A humidifier for a programmable humid and hot alternating test chamber as claimed in claim 1, wherein the chamber body is provided with an inlet and an outlet (10), the inlet (7) of the flow guide tube (4) passes through the inlet, and the outlet (8) of the flow guide tube (4) passes through the outlet (10).

5. A humidifier for a programmable humid and hot alternating test chamber as claimed in claim 1, wherein the heat conductive housing (2) and the flow guide tube (4) are made of copper material.

6. A humidifier programmable humid and hot alternating test chamber as claimed in claim 4, wherein the inlet and outlet nozzles (10) are equipped with sealing covers.

7. A humidifier for programmable humid and hot alternating test chamber as claimed in claim 1, characterized in that the inner wall of the insulation layer (3) is provided with a notch groove, and the heating plate (6) is provided in the notch groove.