Steam humidifying device for environmental test box

Abstract

The invention provides a steam humidifying device for an environmental test box. The steam humidifying device comprises a trough plate; the heating piece comprises a heating pipe and a heating wire in the heating pipe, and the heating pipe is laid in the length direction of the groove plate and rotationally connected to the groove plate; the water outlet end of the first water pump supplies water into the trough plate through a hose, the water inlet end of the first water pump is connected into a water source through a water pumping pipe to pump water, a water outlet of the hose directly faces the heating piece, and one end of the hose is connected with a pipe head; the sliding frame is located above the groove plate; the sliding block is arranged in the sliding frame in a sliding mode, and the pipe head penetrates through the sliding block; the reciprocating screw rod penetrates through the sliding frame and is parallel to the heating piece, and the sliding block is in threaded connection with the reciprocating screw rod; the transmission assembly is in transmission connection with the reciprocating screw rod and the heating pipe; water vapor is continuously supplied in a water source contact heat source evaporation mode, the contact surface between the heat source and the water source changes constantly, and the water source vaporization effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental test chambers, in particular to a steam humidifying device used in environmental test chambers. Background Art

[0002] The environmental test chamber can simulate the real natural environment. When conducting hot and humid environment tests, water vapor needs to be continuously and stably supplied to the environmental test chamber.

[0003] The traditional device adopts the method of arranging the heating equipment directly in the water tank. When cold water is added to the 100°C boiling water, the hot water and cold water in the water tank are mixed, and the temperature can be quickly reduced. When heating is required, the heating device promptly and quickly raises the temperature in the water tank to the 100°C boiling water state. This will affect the transportation of water vapor, resulting in discontinuous supply of water vapor to the environmental test chamber, which in turn affects the experimental results. Therefore, corresponding improvements are made to this problem. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a steam humidification device for an environmental test chamber, which continuously supplies water vapor in the form of water source contacting a heat source for evaporation, and the contact surface between the heat source and the water source changes at all times, thereby improving the vaporization effect of the water source. The technical solution adopted by the present invention is: A steam humidifying device for an environmental test chamber, comprising: Steam shell; A partition plate is used to separate the interior of the steam shell into a closed steam space; a gas delivery pipe extending from the top of the steam shell into the steam space; A slot plate, located in the steam space and fixed to the side of the partition; A heating element, comprising a heating tube and a heating wire inside the heating tube, wherein the heating tube is laid along the length direction of the slot plate and is rotatably connected to the slot plate; A first water pump, whose water outlet end supplies water to the trough plate through a hose, and whose water inlet end is connected to a water source through a pumping pipe to pump water, wherein the water outlet of the hose faces the heating element, and one end of the hose is connected to a pipe head; A slide frame, located above the slot plate and fixed to the side of the partition plate; A slider, slidably disposed in the slide, and the pipe head passes through the slider; a motor, fixed on the steam casing; A reciprocating screw rod, which passes through the slide and is parallel to the heating element, one end of which is connected to the output end of the motor, and the slider is threadedly connected to the reciprocating screw rod; A transmission assembly is transmission-connected to the reciprocating screw and the heating tube so that the heating tube and the reciprocating screw rotate simultaneously.

[0005] Furthermore, a reflux pipe is provided at the bottom of the trough plate.

[0006] Furthermore, it also includes: A water tank is arranged inside the steam shell, one end of the water extraction pipe extends into the water tank, and one end of the return pipe extends into the water tank from the top of the water tank; The first liquid level sensor and the second liquid level sensor are arranged in the water tank with an interval up and down.

[0007] Furthermore, it also includes: The second water pump has a water outlet end that supplies water to the water tank through a water supply pipe, and a water inlet end that is connected to a tap water pipe through a pipeline.

[0008] Furthermore, the transmission assembly comprises: A full gear, arranged coaxially with the heating tube; a half gear, arranged coaxially with the reciprocating screw; A rack, which is L-shaped, and the full gear and the half gear are respectively meshed with the rack; A guide rod connected to the bottom of the rack and parallel to the rack, wherein a first spring is sleeved on the guide rod; The guide sleeve is fixed on the groove plate, and the two ends of the first spring are respectively connected to the guide sleeve and the bottom of the rack.

[0009] Furthermore, the transmission assembly comprises: A cam, arranged coaxially with the reciprocating screw; A rocker, fixed on the heating tube and abutting against the cam surface; A push rod is L-shaped, one end of which abuts against the side of the rocker, and the corner of which is fixedly connected to the heating tube; A guide sleeve fixed to the groove plate; A guide post, which passes through the guide sleeve and is connected to the other end of the push rod; When the cam rotates, the rocker, the push rod and the guide column are linked.

[0010] Furthermore, the transmission assembly comprises: A first support rod, one end of which is fixedly connected to the reciprocating screw rod; A second support rod, one end of which is fixedly connected to the heating tube; A sliding column, arranged at the other end of the first support rod; A sliding opening is opened along the length direction of the second support rod; Wherein, the sliding post is slidably fitted in the sliding opening.

[0011] Advantages of the present invention: Water is poured onto the high-temperature heating element through a hose and quickly vaporizes to form steam, thereby achieving a continuous supply of steam. The same power source can realize the reciprocating movement of the pipe head and the rotation of the heating tube respectively, which saves energy while increasing the contact area between the water source and the circumferential surface of the heating tube, improving the vaporization effect and reducing the local temperature difference of the heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0014] Figure 3 It is a schematic diagram of the slide installation structure of the present invention.

[0015] Figure 4 It is a schematic diagram of the internal structure of the slide of the present invention.

[0016] Figure 5 for Figure 3 Enlarged view of point A.

[0017] Figure 6 It is a schematic structural diagram of a second embodiment of the transmission assembly of the present invention.

[0018] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0019] Figure 8 It is a schematic structural diagram of a third embodiment of the transmission assembly of the present invention.

[0020] Fig. 9 for Figure 8 Enlarged view of center C.

[0021] In the figure: 1-bottom plate, 2-shell, 3-water tank, 4-partition, 5-air pipe, 6-groove plate, 7-heating element, 8-first water pump, 9-hose, 10-water pipe, 11-pipe head, 12-slide, 13-slider, 14-reciprocating screw, 15-motor, 16-reflux pipe, 17-controller, 18-first liquid level sensor, 19-second liquid level sensor, 20-second water pump, 21-upper water pipe, 22-full gear, 23-half gear, 24-rack, 25-guide rod, 26-first spring, 27-guide sleeve, 28-cam, 29-rocker, 30-push rod, 31-guide sleeve, 32-guide column, 33-second spring, 34-first support rod, 35-second support rod, 36-sliding column, 37-sliding mouth. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Please see attached Figure 1 -Attached Figure 4 The present application proposes a steam humidification device for an environmental test chamber, comprising: a steam shell; a partition 4, which separates a closed steam space from the inside of the steam shell; an air pipe 5, which extends from the top of the steam shell into the steam space; a slot plate 6, which is located in the steam space and fixed to the side of the partition 4; a heating element 7, which comprises a heating tube and a heating wire inside the heating tube, the heating tube is laid along the length direction of the slot plate 6 and is rotatably connected to the slot plate 6; a first water pump 8, whose water outlet end supplies water to the slot plate 6 through a hose 9, and whose water inlet end is connected to a water source through a pumping pipe 10 to pump water, and the water outlet of the hose 9 Opposite to the heating element 7, one end of the hose 9 is connected with a pipe head 11; a slide 12 is located above the slot plate 6 and fixed on the side of the partition 4; a slider 13 is slidably arranged in the slide 12, and the pipe head 11 passes through the slider 13; a motor 15 is fixed on the steam shell; a reciprocating screw 14 passes through the slide 12 and is parallel to the heating element 7, one end of which is connected to the output end of the motor 15, and the slider 13 is threadedly connected to the reciprocating screw 14; a transmission assembly is transmission-connected to the reciprocating screw 14 and the heating tube, so that the heating tube and the reciprocating screw 14 rotate simultaneously.

[0024] The steam housing of the present application comprises a bottom plate 1 and a shell 2, and the shell 2 is invertedly arranged on the bottom plate 1. In one embodiment, a layer of heat insulation cotton is added outside the shell 2. Considering that the high working temperature in the steam space will affect the working environment temperature of the motor 15, and considering the heat loss, the motor 15 is as far away from the steam space as possible, and is thus arranged on the surface of the shell 2.

[0025] The steam generation process is as follows: the first water pump 8 draws water from the source and pours it onto the surface of the heating element 7 through the hose 9 and the pipe head 11. The heating wire inside the heating element 7 exchanges heat with the heating tube, and the heating tube exchanges heat with the water source, so that the water vaporizes into steam. The steam is supplied to the environmental test chamber through the gas pipe 5.

[0026] During the steam generation process, the motor 15 drives the reciprocating screw 14 to rotate forward and reverse, so that the slider 13 makes a reciprocating motion on the slide 12, thereby realizing the pouring of the tube head 11 from beginning to end along the heating element 7; at the same time, the transmission component is used to transmit power to the heating tube, and the heating tube rotates along its own axis, so that the water source can contact the entire circumferential surface of the heating tube, increasing the contact area between the water source and the heating tube, avoiding long-term contact with the same place resulting in excessive local temperature difference in the heating tube, and with the transfer of the contact surface between the water source and the heating tube, the surface of the heating tube that was in contact with the water source in the previous second can quickly heat up and recover under the heat exchange of the heating wire after the water source moves away, thereby realizing sustainable vaporization of the water source; in addition, the use of the motor 15 as a power source can realize the linkage of multiple components, and the number of electrical components used is small, which is convenient for maintenance.

[0027] In the present application, the heating wire inside the heating tube extends from the other end of the transmission assembly and is fixed at another position (not shown), and is not directly connected to the heating tube to prevent the wire of the heating wire from being entangled as the heating tube rotates.

[0028] In a specific embodiment, since the working temperature in the steam space is high, the components in the steam space such as the hose 9 and the pipe head 11 can be made of stainless steel. For example, the hose 9 is a stainless steel bellows.

[0029] In a specific embodiment, the water outlet of the pipe head 11 is configured as a shower head; the shower head disperses the water source so that the water source evenly contacts the surface of the heating tube, which is conducive to the vaporization of the water source.

[0030] Please refer to the attached Figure 3 , a reflux pipe 16 is provided at the bottom of the trough plate 6. The reflux pipe 16 can recycle the unvaporized water to prevent the water from gathering in the trough plate 6. The number of the reflux pipes 16 is determined according to the flow rate of the water. For example, in the present application, the number of the reflux pipes 16 is set to two.

[0031] Please refer to the attached Figure 2 In order to store water, the present application also includes: a water tank 3, which is arranged inside the steam shell, one end of the water pumping pipe 10 extends into the water tank 3, and one end of the return pipe 16 extends into the water tank 3 from the top of the water tank 3; a first liquid level sensor 18 and a second liquid level sensor 19 are arranged inside the water tank 3 at intervals in the upper and lower parts.

[0032] The water source is first stored in the water tank 3 for pressure stabilization. The first water pump 8 pumps water from the water tank 3 for use. The highest water level and the lowest water level are monitored by the first liquid level sensor 18 and the second liquid level sensor 19, so as to automatically store water in the water tank 3. The reflux pipe 16 returns the water in the trough plate 6 to the water tank 3 for re-evaporation.

[0033] In a specific embodiment, the partition 4 is arranged vertically, with its top sealed to the inner top surface of the shell 2 , and its bottom sealed to the water tank 3 .

[0034] Please refer to the attached Figure 2 In order to facilitate water supply to the water tank 3, the present application further includes a second water pump 20, whose water outlet end supplies water to the water tank 3 through the upper water pipe 21, and whose water inlet end is connected to the tap water pipe through a pipeline. Specifically, the second water pump 20 is arranged on the bottom plate 1 and away from the steam space to reduce the influence of high temperature on the working environment temperature of the second water pump 20.

[0035] In a specific embodiment, a layer of heat insulating cotton is covered on the outside of the steam space and on the side of the partition 4 to reduce heat loss and the impact on the working environment temperature of the first water pump 8.

[0036] In the present application, the first water pump 8, the motor 15, the first liquid level sensor 18 and the second liquid level sensor 19 are electrically connected to the controller 17 respectively for intelligently controlling the operation of each electrical component; the controller 17 can be arranged on the housing 2 or on the base plate 1.

[0037] As the first embodiment of the present application, as shown in the attached Figure 5 As shown, the transmission assembly includes: a full gear 22, which is coaxially arranged with the heating tube; a half gear 23, which is coaxially arranged with the reciprocating screw 14; a rack 24, which is L-shaped, and the full gear 22 and the half gear 23 are respectively meshed with the rack 24; a guide rod 25, which is connected to the bottom of the rack 24 and is parallel to the rack 24, and the guide rod 25 is sleeved with a first spring 26; a guide sleeve 27, which is fixed on the groove plate 6, and the two ends of the first spring 26 are respectively connected to the guide sleeve 27 and the bottom of the rack 24.

[0038] In a specific embodiment, the full gear 22 is located at the end of the heating tube, and the half gear 23 is located at the end of the reciprocating screw 14; when the motor 15 drives the reciprocating screw 14 to rotate, the heating tube rotates accordingly under the meshing action of the gear rack, and at the same time, the rack drives the guide rod 25 to perform a lifting action along the guide sleeve 27, and the first spring 267 is stretched or compressed accordingly to facilitate the resetting of the rack 24.

[0039] By setting the half gear 23, there is a speed difference between the rotation speed of the reciprocating screw 14 and the rotation speed of the heating tube. In the first step, the contact path between the water source and the heating tube is avoided to be a straight line; secondly, by setting different gear ratios, the movement speed between the tube head 11 and the heating tube is further staggered, so as to achieve the purpose of the water source fully contacting the circumferential surface of the heating tube.

[0040] As a second embodiment of the present application, as shown in the attached Figure 6 and attached Figure 7As shown, the transmission assembly includes: a cam 28, which is coaxially arranged with the reciprocating screw 14; a rocker 29, which is fixed on the heating tube and abuts against the surface of the cam 28; a push rod 30, which is L-shaped, one end of which abuts against the side of the rocker 29, and the corner of which is fixedly connected to the heating tube; a guide sleeve 31, which is fixed on the groove plate 6; a guide column 32, which passes through the guide sleeve 31 and is connected to the other end of the push rod 30; wherein, when the cam 28 rotates, the rocker 29, the push rod 30 and the guide column 32 are linked.

[0041] Specifically, the reciprocating screw 14 rotates while driving the cam 28 to rotate. In the first half of the stroke of the cam 28, the rocker 29 is pushed to swing, and the swing of the rocker 29 drives the heating tube to rotate. At the same time, the rocker 29 pushes the push rod 30, so that the guide column 32 moves along the guide sleeve 31, and the second spring 33 is stretched accordingly. When the cam 28 and the rocker 29 swing to the limit, the heating tube rotates through a cycle. In the second half of the stroke of the cam 28, the rocker 29 swings in the opposite direction under the action of the second spring 33, and the push rod 30 and the guide column 32 are reset under the action of the second spring 33.

[0042] As the third embodiment of the present application, as shown in the attached Figure 8 and attached Fig. 9 As shown, the transmission assembly includes: a first support rod 34, one end of which is fixedly connected to the reciprocating screw 14; a second support rod 35, one end of which is fixedly connected to the heating tube; a sliding column 36, which is arranged at the other end of the first support rod 34; a sliding mouth 37, which is opened along the length direction of the second support rod 35; wherein the sliding column 36 is slidably fitted in the sliding mouth 37.

[0043] Specifically, the reciprocating screw 14 rotates while driving the first support rod 34 to rotate, and the sliding connection between the slide column 36 and the slide groove 37 is used to realize the swing of the second support rod 37, thereby realizing the periodic rotation of the heating tube.

[0044] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A steam humidifying device for an environmental test chamber, characterized in that: include: Steam shell; A partition (4) is used to separate the interior of the steam shell into a closed steam space; A gas delivery pipe (5) extending from the top of the steam shell into the steam space; A groove plate (6) is located in the steam space and fixed to a side of the partition plate (4); A heating element (7) comprising a heating tube and a heating wire inside the heating tube, wherein the heating tube is laid along the length direction of the slot plate (6) and is rotatably connected to the slot plate (6); A first water pump (8), whose water outlet end supplies water to the trough plate (6) through a hose (9), and whose water inlet end is connected to a water source through a pumping pipe (10) to pump water, wherein the water outlet of the hose (9) faces the heating element (7), and one end of the hose (9) is connected to a pipe head (11); A slide frame (12) is located above the groove plate (6) and fixed to the side of the partition plate (4); A slider (13) is slidably disposed in the slide frame (12), and the pipe head (11) passes through the slider (13); A motor (15) fixed on the steam casing; A reciprocating screw (14) passes through the slide (12) and is parallel to the heating element (7), one end of which is connected to the output end of the motor (15), and the slider (13) is threadedly connected to the reciprocating screw (14); A transmission assembly is transmission-connected to the reciprocating screw (14) and the heating tube, so that the heating tube and the reciprocating screw (14) rotate simultaneously.

2. The steam humidifying device for an environmental test chamber according to claim 1, characterized in that: A return pipe (16) is provided at the bottom of the trough plate (6).

3. The steam humidifying device for an environmental test chamber according to claim 2, characterized in that: Also includes: A water tank (3) is arranged inside the steam shell, one end of the water extraction pipe (10) extends into the water tank (3), and one end of the return pipe (16) extends into the water tank (3) from the top of the water tank (3); A first liquid level sensor (18) and a second liquid level sensor (19) are arranged in an upper and lower spaced relationship inside the water tank (3).

4. The steam humidifying device for an environmental test chamber according to claim 3, characterized in that: Also includes: The second water pump (20) has a water outlet end that supplies water to the water tank (3) through a water supply pipe (21), and a water inlet end that is connected to a tap water pipe through a pipeline.

5. The steam humidifying device for an environmental test chamber according to any one of claims 1 to 4, characterized in that: The transmission assembly comprises: A full gear (22) arranged coaxially with the heating tube; A half gear (23) arranged coaxially with the reciprocating screw (14); The rack (24) is L-shaped, and the full gear (22) and the half gear (23) are respectively meshed with the rack (24); A guide rod (25) connected to the bottom of the rack (24) and parallel to the rack (24), wherein a first spring (26) is sleeved on the guide rod (25); The guide sleeve (27) is fixed on the groove plate (6), and the two ends of the first spring (26) are respectively connected to the guide sleeve (27) and the bottom of the rack (24).

6. The steam humidifying device for an environmental test chamber according to any one of claims 1 to 4, characterized in that: The transmission assembly comprises: A cam (28) arranged coaxially with the reciprocating screw (14); A rocker (29) fixed on the heating tube and abutting against the surface of the cam (28); A push rod (30) is L-shaped, one end of which abuts against the side of the rocker (29), and the corner of which is fixedly connected to the heating tube; A guide sleeve (31) fixed on the slot plate (6); A guide post (32) passes through the guide sleeve (31) and is connected to the other end of the push rod (30); When the cam (28) rotates, the rocker (29), the push rod (30) and the guide column (32) are linked.

7. The steam humidifying device for an environmental test chamber according to any one of claims 1 to 4, characterized in that: The transmission assembly comprises: A first support rod (34), one end of which is fixedly connected to the reciprocating screw rod (14); A second support rod (35), one end of which is fixedly connected to the heating tube; A sliding column (36) arranged at the other end of the first support rod (34); A sliding opening (37) is formed along the length direction of the second support rod (35); Wherein, the sliding column (36) is slidably fitted in the sliding opening (37).

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