CN214210557U

CN214210557U - Constant temperature and humidity test box

Info

Publication number: CN214210557U
Application number: CN202023029009.5U
Authority: CN
Inventors: 梁旺儒; 潘显臻
Original assignee: Dongguan Haiboneng Environmental Test Equipment Co ltd
Current assignee: Dongguan Haiboneng Environmental Test Equipment Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-09-17
Anticipated expiration: 2030-12-16

Abstract

The utility model relates to a constant temperature and humidity test box for carrying out reliability tests of various electrician electronic products and other products, spare part and materials carrying out environmental simulation such as high low temperature constancy and gradual change, damp and hot test. Constant temperature and humidity proof box, be equipped with baffle 11 between 1 and the evaporation chamber 3 of test room, humidification chamber 2 installs humidification device 21, reserve tank 22, humidification device 21 comprises water tank, heater, jet-propelled pipe, circulation mouth on the jet-propelled pipe is connected to on the reserve tank 22, it has fixed concave tooth to compel to open on the tight board 15 of compelling on the tight handle device, the bottom of compelling tight post board is equipped with fixed convex tooth, compel tight post board to install on compelling tight board 15, and compel fixed convex tooth on the tight post board and compel the fixed concave tooth of compelling on the tight board 15 to mesh mutually. To the problem that exists among the background art, the utility model provides a constant temperature and humidity test box can in time supply moisture to the water tank in the humidification device automatically and ensure the constant temperature and humidity test box that its automatic humidification function can long-time operation.

Description

Constant temperature and humidity test box

Technical Field

The utility model relates to a constant temperature and humidity test box for carrying out reliability tests of various electrician electronic products and other products, spare part and materials carrying out environmental simulation such as high low temperature constancy and gradual change, damp and hot test.

Background

The constant temperature and humidity test box is a device for testing whether a product meets the requirements of related numerical indexes or not in a certain temperature and humidity condition or a certain gradual temperature and humidity condition by simulation. The common method is to heat or cool water with larger specific heat capacity to a specified temperature on the basis of water vapor evaporated by an evaporator, fill the water vapor into a test room, adjust the temperature and humidity of the test room and control the temperature and humidity to a certain amount.

In the existing test chamber for simulating constant or gradually changing proper temperature and humidity, a cavity special for storing equipment is additionally arranged on one side of a test chamber, equipment such as a heating wire and a water vapor discharge pipe is arranged in the test chamber, and the test chamber is humidified and heated by water vapor in the test chamber. However, other devices are added in the test room, so that the influence of a product fixing test is easily caused due to the fact that the test space is occupied, and the installed devices such as the heating wires are easily contacted by workers, so that the workers are injured.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model provides a constant temperature and humidity test box can in time supply moisture to the water tank in the humidification device automatically and ensure the constant temperature and humidity test box that its automatic humidification function can long-time operation.

The constant temperature and humidity test box of the utility model is provided with the reserve tank in the humidification chamber 2, the reserve tank can collect vapor which can not be discharged in time in the humidification device, and can allow a user to add water additionally, and can also supply water to the water tank on the humidification device in time through the water pump arranged on the reserve tank, so that the humidification device can work for a long time; the tightening column plate and the tightening plate are fixed in a mode of meshing the fixed concave teeth and the fixed convex teeth on the tightening handle device, so that a user can change the sealing distance between the sliding door 12 and the test room 1 in a mode of meshing the fixed convex teeth and the fixed concave teeth on a new position by simply moving the tightening column plate when in need, and the sealing performance of the tightening handle device is ensured.

The constant temperature and humidity test box comprises a test chamber 1, a freezing chamber, a humidifying chamber 2, a control chamber and an evaporating chamber 3. Wherein, the control room receives the environmental information of the test room 1, processes the information through the collected environmental information and controls the running condition of each device of the test box, belonging to the central system of the test box. Wherein, the wall of the test chamber 1 is internally provided with a heat-insulating layer which is made of hard polyurethane foam with the thickness of 100MM and partial glass wool.

One side of the laboratory 1 is provided with a sliding door 12, and the sliding door 12 is provided with an observation window. Wherein, the observation window adopts the anti-fogging glass.

The evaporation chamber 3 is arranged in the test chamber 1, a partition plate 11 is arranged between the test chamber 1 and the evaporation chamber 3, the partition plate 11 is arranged on the inner wall of the test chamber 1, and an air opening is formed between the partition plate 11 and the bottom of the test chamber 1. Wherein baffle 11 is installed on 1 inner wall of laboratory for detachable connection, and baffle 11 passes through detachable fixed mounting mode such as bolts to be installed on 1's of laboratory inner wall, and baffle 11 is the evaporating chamber 3 with partial space partition of laboratory 1 promptly, can dismantle baffle 11 when the user maintains the device in the evaporating chamber 3 under the circumstances that this proof box shut down, directly maintains evaporating chamber 3 through spacious laboratory 1, is convenient for maintain. The lower end of the clapboard 11 is provided with an air port for directly blowing air with certain temperature and humidity into the laboratory 1 after the action of each device of the evaporation chamber 3 is finished, thereby accelerating the whole temperature change effect.

The evaporation chamber 3 is sequentially provided with an air supply device 4, a heating wire 31 and an evaporator 32 from top to bottom. The purpose of the evaporation chamber 3 is to process the air into the air with the temperature and the humidity meeting the test conditions and send the air into the test chamber 1, and the air supply device 4, the heating wire 31 and the evaporator 32 are sequentially arranged in the evaporation chamber 3 from top to bottom, so that a high-efficiency air temperature regulating system is formed, and the air can efficiently reach the required temperature and humidity. The heating wire 31 adopts a nichrome heating wire, and compared with a traditional nichrome heating tube heater, the nichrome heating wire has the advantages of better reliability, stronger stability and longer service life.

Air supply arrangement 4 installs at the top of evaporating chamber 3, air supply arrangement 4 comprises air supply cover, air supply motor, wind wheel, protection net from last to down in proper order, air supply motor's the direction of blowing is to evaporimeter 32. The wind wheel is made of high-temperature and low-temperature resistant aluminum alloy materials, is high-temperature and low-temperature resistant, can easily generate a compact aluminum oxide film on the surface of the wind wheel, is favorable for moisture prevention and oxidation prevention, and is durable. Wherein, air supply arrangement 4 passes through the mounting means of bolt and installs the upside at evaporating chamber 3, and the user can directly install or dismantle air supply arrangement 4 in the outside of this proof box, is convenient for install and maintain.

Humidification chamber 2 installs humidification device 21, reserve tank 22, humidification device 21 comprises water tank, heater, jet-propelled pipe, the heater is installed in the water tank, the top of water tank is equipped with fumarole, circulation mouth, the jet-propelled pipe is "T" word shape, be equipped with air inlet, gas outlet, circulation mouth on the jet-propelled pipe of "T" style of calligraphy, be connected with jet-propelled hose between fumarole and the air inlet, the gas outlet of jet-propelled pipe is installed on evaporating chamber 3's inboard, and installs electric air valve, the circulation mouth is connected to on the reserve tank 22, reserve tank 22 is equipped with the moisturizing pipe, the other end of moisturizing pipe is connected to on the circulation mouth. The humidifying device adopts a method of heating water to generate steam for humidifying, the principle is simple, the process is mature, and the equipment structure is simple and is convenient to maintain or use. The reserve tank 22 is provided to provide a water adding device installed in an enclosed environment other than the humidifying device 21, and when the humidifying device 21 is operated for a long time, the water in the tank is insufficient, and the humidifying device 21 is damaged in the case that the heater is continuously heated, so that an additional reserve tank 22 capable of timely supplementing water is required. The top end of the water tank is provided with an air injection hole for discharging the steam generated by heating, and the top end of the water tank is provided with a circulation port for supplementing water for the water tank. The circulation port on the jet pipe is connected to the reserve tank 22 so that when the electric air valve on the air outlet is closed, the water vapor in the jet pipe can be discharged into the reserve tank 22 from the circulation port, and the water loss is reduced. The make-up water pipe of the reserve tank 22 is connected to the circulation port of the tank, wherein the make-up water pipe is provided with a water pump for pumping up the water in the reserve tank 22, and when the tank needs to be filled with water, the water in the reserve tank 22 is also fed into the tank from the make-up water pipe. The air outlet of the air injection pipe is arranged on the inner side of the evaporation chamber 3 and is arranged between the air supply device 4 and the heating wire 31, so that the steam exhausted from the air outlet can pass through the heating wire 31 under the blowing of the air supply device 4 and is heated by the heating wire 31, and the steam is quickly changed into the steam with the specified temperature required by the test.

Install between push-and-pull door 12 and the laboratory 1 and compel tight handle device, compel tight handle device by compel tight handle 13, compel tight hook 14, compel tight board 15, compel tight post board to constitute, it has fixed concave tooth to compel to open on the tight board 15, it has the mounting groove to open on the fixed concave tooth, the bottom of compeling tight post board is equipped with fixed convex tooth, compel tight post board to install on compeling tight board 15, and compel fixed convex tooth on the tight post board and compel the fixed concave tooth on the tight board 15 to mesh mutually, compel tight handle 13 to install on push-and-pull door 12, compel tight board 15 to install on the side of laboratory 1. Wherein, compel tight board 15 through bolt fixed mounting on the outer wall of the proof box that is close to push-and-pull door 12, compel fixed concave tooth on the tight board 15 to open and to have the concave tooth mounting groove, compel tight post board to be equipped with post board mounting hole, through bolt fixed mounting between post board mounting hole and the concave tooth mounting groove.

The mounting of the clamping handle 13 provides a simple means of securely closing the sliding door 12 to the laboratory 1. Through compelling the installation method that the fixed dogtooth on the column plate meshed with the fixed dogtooth on the compelling board 15 makes to compel tight column plate to install on compelling board 15, the sealing washer that is equipped with between push-and-pull door 12 and the laboratory 1 produces the resilience force easily after repetitious usage not enough, when leading to unable sealed effect of implementing effectively, the user can see through simple operation, the mounting bolt on the column plate is compeled to becoming flexible earlier, remove again and compel tight column plate to suitable position, fixed dogtooth meshes with new fixed dogtooth, tighten mounting bolt again, reduce the sealed distance between push-and-pull door 12 and the laboratory 1 and can continue to implement sealed function to the sealing washer.

A water tank top plate and a water tank uncovering cover are mounted at the top of the reserve water tank 22, the water tank top plate and the water tank uncovering cover are connected through a hinge device, and a reserve water tank hole which can enable a water replenishing pipe to penetrate is formed in the water tank top plate.

The center of the packing plate 15 is provided with a packing mounting opening with an upward opening, the inner side of the packing mounting opening is clamped with a packing toothed plate 16, and the packing concave teeth are arranged on the packing toothed plate 16. The packing mounting hole of a breach shape that packing board 15 opened can let packing pinion rack 16 install inside easily, has used longer time when packing the handle, and the fixed concave tooth on packing pinion rack 16 probably has taken place wearing and tearing and has leaded to being difficult to with the fine meshing of fixed convex tooth, has influenced the installation of packing the column plate and has fixed, and the user can be directly taking out packing pinion rack 16 from packing mounting hole department and again changing packing pinion rack 16 under the condition that need not demolish packing board 15 this moment for the process of maintaining the maintenance is simple.

The fins of the evaporator 32 are hydrophilic film aluminum fins. The hydrophilic film aluminum fins have small water tension, water drops precipitated by air condensation are extremely easy to slip off, and a water bridge phenomenon blocked in fin gaps is not easy to generate, so that the dehumidification efficiency is prevented from being influenced by the water bridge phenomenon.

Drawings

Fig. 1 is a side view of the constant temperature and humidity test chamber of the present invention, which hides the side walls of the test chamber 1 and the humidification chamber 2.

Fig. 2 is a schematic diagram of the tightening handle device of the constant temperature and humidity test chamber of the present invention.

Fig. 3 is a schematic diagram of another embodiment of the packing plate and the packing column plate of the constant temperature and humidity test chamber of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1: the utility model discloses a constant temperature and humidity test box, user will be surveyed the sample and put in laboratory 1, close push-and-pull door 12, after the environmental parameter has been imported to the control cabinet, the control computer begins to control each equipment and carries out the environment of work adjustment laboratory 1. Firstly, the computer is controlled to control the heating wire 31 to be heated to a specified temperature and the evaporator 52 to be condensed to a specified temperature through the environmental information fed back by the temperature sensor and the humidity sensor, the air in the evaporation chamber 3 is changed, and then the air is rapidly sent into the test chamber 1 under the action of the air blowing device 4 to sequentially and rapidly change the environment of the test chamber 1 into a specified test environment.

Referring to FIG. 2, in one embodiment of the packing plate 15: the packing plate 15 is provided with fixed concave teeth, the packing column plate is arranged on the packing plate 15, and the fixed convex teeth on the packing column plate are meshed with the fixed concave teeth on the packing plate 15.

Referring to fig. 3, another embodiment of the packing plate 15: the central part of the packing plate 15 is provided with a packing mounting port with an upward opening, the inner side of the packing mounting port is clamped with a packing toothed plate 16, a packing concave tooth is arranged on the packing toothed plate 16, a packing column plate is arranged on the packing toothed plate 16, and a fixed convex tooth on the packing column plate is meshed with a fixed concave tooth on the packing plate 15.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. The constant temperature and humidity test box comprises a test chamber (1), a freezing chamber, a humidifying chamber (2), a control chamber and an evaporating chamber (3), and is characterized in that a sliding door (12) is installed on one side of the test chamber (1), an observation window is arranged on the sliding door (12),

the evaporation chamber (3) is arranged in the test chamber (1), a partition plate (11) is arranged between the test chamber (1) and the evaporation chamber (3), the partition plate (11) is arranged on the inner wall of the test chamber (1), an air port is arranged between the partition plate (11) and the bottom of the test chamber (1),

the evaporation chamber (3) is sequentially provided with an air supply device (4), a heating wire (31) and an evaporator (32) from top to bottom, the air supply device (4) is arranged at the top of the evaporation chamber (3), the air supply device (4) is sequentially composed of an air supply cover, an air supply motor, a wind wheel and a protection net from top to bottom, the air supply direction of the air supply motor points to the evaporator (32),

humidification device (21), reserve tank (22) are installed to humidification chamber (2), humidification device (21) comprises water tank, heater, jet-propelled pipe, the heater is installed in the water tank, the top of water tank is equipped with fumarole, circulation mouth, the jet-propelled pipe is "T" word shape, be equipped with air inlet, gas outlet, circulation mouth on the jet-propelled pipe of "T" style of calligraphy, be connected with jet-propelled hose between fumarole and the air inlet, the gas outlet of jet-propelled pipe is installed on the inboard of evaporating chamber (3), and installs electric air valve, the circulation mouth is connected to on reserve tank (22), reserve tank (22) are equipped with the moisturizing pipe, the other end of moisturizing pipe is connected to on the circulation mouth,

install between push-and-pull door (12) and laboratory (1) and compel tight handle device, compel tight handle device by compeling tight handle (13), compel tight hook (14), compel tight board (15), compel tight post board to constitute, it has fixed concave tooth to compel to open on tight board (15), it has the mounting groove to open on the fixed concave tooth, the bottom of compeling tight post board is equipped with fixed dogtooth, the top of compeling tight post board is equipped with and compels tight post, compel tight post board to install on compeling tight board (15), and compel fixed dogtooth on the tight post board and compel fixed concave tooth on tight board (15) to mesh mutually, compel tight handle (13) to install on push-and-pull door (12), compel tight board (15) to install on the side of laboratory (1).

2. The constant temperature and humidity test chamber as claimed in claim 1, wherein a top plate of the water tank and a cover of the water tank are mounted on the top of the backup water tank (22), the top plate of the water tank and the cover of the water tank are connected through a hinge device, and the top plate of the water tank is provided with a backup water tank hole through which a water replenishing pipe can penetrate.

3. The constant temperature and humidity test box according to claim 1, wherein a tightening mounting opening with an upward opening is formed in the center of the tightening plate (15), a tightening toothed plate (16) is clamped inside the tightening mounting opening, and the tightening concave teeth are formed on the tightening toothed plate (16).

4. The constant temperature and humidity test chamber according to claim 1, wherein the fins of the evaporator (32) are hydrophilic film aluminum fins.