CN218982633U - Energy-saving multistable variable air volume fume chamber - Google Patents
Energy-saving multistable variable air volume fume chamber Download PDFInfo
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- CN218982633U CN218982633U CN202223057196.7U CN202223057196U CN218982633U CN 218982633 U CN218982633 U CN 218982633U CN 202223057196 U CN202223057196 U CN 202223057196U CN 218982633 U CN218982633 U CN 218982633U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses an energy-saving multistable variable air volume fume hood which comprises a fume hood body and an air inlet system, wherein an experiment area formed by an experiment chamber and an air exhaust duct is arranged in the fume hood; an exhaust air quantity control valve is arranged on an exhaust outlet of the exhaust air duct; a window is arranged on an operation port of the experiment chamber; the rear side of the fume chamber body, which is positioned in the experimental area, is provided with a window lifting mechanism for driving the window to slide along the guide groove; one side of the operation port is provided with a door height sensor for detecting the height of the window; the upper part and one side of the fume chamber body which is positioned at the operation opening are respectively provided with a human body infrared sensor and a variable air volume controller. The utility model can control the opening or closing of the window according to whether someone is in front of the window, and can also control the opening of the air exhaust volume control valve according to different states of the window to output the required air exhaust volume, thereby realizing safe and stable operation in various states and achieving the effects of energy conservation and emission reduction.
Description
Technical Field
The utility model relates to the technical field of laboratories, in particular to an energy-saving multistable variable air volume fume hood.
Background
The laboratory fume hood in the prior art cannot automatically control the opening or closing of the window according to whether a person is in front of the window or not due to the limitation of structural setting, and cannot control the air discharge quantity according to the opening or closing of the window and the change of the opening height, so that the laboratory fume hood cannot stably operate in various states, has poor energy-saving effect, and is easy to overflow toxic gas and endanger the health and safety of experimental personnel.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the energy-saving multistable variable air volume ventilating cabinet which not only can automatically control the opening or closing of the window according to whether a person is in front of the window, but also can control the opening of the air exhaust air volume control valve according to different states of the window to output required air exhaust volume, so that safe and stable operation under various states is realized, and the effects of energy conservation and emission reduction are achieved.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
the energy-saving multistable variable-air-volume ventilating cabinet comprises a ventilating cabinet body and an air inlet system, wherein the ventilating cabinet body and the air inlet system are arranged in a laboratory, and the energy-saving multistable variable-air-volume ventilating cabinet is characterized in that an experiment area is arranged in the ventilating cabinet body; a deflector with an exhaust hole is arranged in the experimental area; the flow guide plate divides the experimental area into an experimental chamber and an exhaust air duct from front to back; an air outlet is arranged above the air exhaust duct; an exhaust air volume control valve is arranged on the exhaust outlet;
an operation port is formed in the front of the experiment chamber; symmetrical guide grooves are formed in the inner side of the operation opening; a window which is in clearance fit with the guide groove is arranged in the guide groove;
the rear side of the fume chamber body, which is positioned in the experimental area, is provided with a window lifting mechanism for driving the window to slide along the guide groove; one side of the operation port is provided with a door height sensor for detecting the height of the window; a human body infrared sensor and a variable air volume controller are respectively arranged above and at one side of the operation opening of the fume chamber body;
the human body infrared sensor, the door height sensor and the air exhaust volume control valve are electrically connected with the variable air volume controller.
Preferably, the air inlet system comprises refrigeration equipment and a filtering module, and the filtering module is communicated with the refrigeration equipment through a connecting pipe; the air outlets of the refrigeration equipment are respectively provided with a cold air pipe; the cold air pipe is communicated with a laboratory;
preferably, the window lifting mechanism comprises a guide wheel group, a rope, a counter weight and a rope winder;
the guide wheel sets are symmetrically arranged at the top of the fume hood body; the counterweight hammer is positioned at the back of the fume hood body and is connected with the fume hood body in an up-down sliding way through the guide rail pair; the rope winder is positioned below the counter weight hammer and is fixedly connected with the fume hood body; one end of the rope is fixedly connected with the top of the window, and the other end of the rope bypasses the guide wheel group and is fixedly connected with the counterweight hammer; the rope winding device is connected with the counterweight hammer through a rope winding;
the rope winder is electrically connected with the human body infrared sensor positioned at the operation port.
Preferably, one side of the operation port is also provided with an elbow touch switch; the elbow touch switch is electrically connected with the window lifting mechanism.
Preferably, a wind speed sensor for detecting the surface wind speed is further arranged on one side of the operation port; the wind speed sensor is electrically connected with the exhaust air volume control valve.
Preferably, the experimental chamber is provided with a gas detection sensor for detecting toxic gas on the guide plate; the gas detection sensor is electrically connected with the exhaust air volume control valve.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model not only can automatically control the opening or closing of the window according to whether a person is in front of the window, but also can control the opening of the air exhaust volume control valve according to different states of the window to output the required air exhaust volume, thereby realizing safe and stable operation in various states and achieving the effects of energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic diagram of a connection structure between a fume hood body and an air intake system in the present utility model;
FIG. 2 is a schematic perspective view of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a schematic view of the cross-sectional structure A-A in FIG. 3;
wherein: the ventilating cabinet comprises a ventilating cabinet body 1, an air inlet system 2, an air exhaust volume control valve 3, a window 4, a window lifting mechanism 7, an elbow touch switch 8, an air speed sensor 9, refrigerating equipment 21, a filtering module 22, a connecting pipe 23, an air inlet pipe 24, a cold air pipe 25, a guide wheel group 71, a rope 72, a counterweight hammer 73, a rope winder 74, a guide plate 10, an experiment area 20, an air exhaust outlet 30, an operation port 40, a door height sensor 70, a human body infrared sensor 80, a variable air volume controller 90, a laboratory 100, an experiment chamber 201, an air exhaust duct 202, a gas detection sensor 300 and a guide groove 401.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model will be further described with reference to the accompanying drawings and detailed description below:
as shown in fig. 1-4, an energy-saving multistable variable air volume fume hood comprises a fume hood body 1 and an air inlet system 2, wherein the fume hood body 1 is arranged in a laboratory 100, and an experiment area 20 is arranged in the fume hood body 1; a deflector 10 with exhaust holes is arranged in the experimental area 20; the guide plate 10 divides the experiment area 20 into an experiment chamber 201 and an exhaust air duct 202 from front to back; an air outlet 30 is arranged above the air exhaust duct 202; an exhaust air volume control valve 3 is arranged on the exhaust outlet 30;
an operation port 40 is formed in front of the experiment chamber 201; symmetrical guide grooves 401 are formed in the inner side of the operation opening 40; a window 4 in clearance fit with the guide groove 401 is arranged in the guide groove 401;
the rear side of the fume chamber body 1, which is positioned in the experiment area 20, is provided with a window lifting mechanism 7 for driving the window 4 to slide along the guide groove 401; a door height sensor 70 for detecting the height of the window 4 is arranged on one side of the operation opening 40; a human body infrared sensor 80 and a variable air volume controller 90 are respectively arranged above and at one side of the operation opening 40 of the fume hood body 1;
the human body infrared sensor 80, the door height sensor 70 and the air exhaust volume control valve 3 are electrically connected with the variable air volume controller 90.
In this embodiment, the human infrared sensor 80 senses that the window 4 is from no person to a person, and the window lifting mechanism 7 is automatically controlled to positively drive the window 4 to a safe height; when the person goes from someone to no person, the window lifting mechanism 7 is controlled to reversely drive the window 4 to the set minimum height, so that effective isolation is generated; meanwhile, signals sensed by the human body infrared sensor 80 are transmitted to the variable air volume controller 90, and then the variable air volume controller 90 controls the air exhaust air volume control valve 3 to be adjusted to the corresponding opening according to the received signals and the preset execution program, so that the air exhaust is reduced to the minimum air exhaust volume under the premise of ensuring safety, and the safety and the energy conservation are achieved.
In this embodiment, when the height of the window 4 is sensed by the door height sensor 70 to be changed from low to high in the case of a person on duty (in an experiment), the variable air volume controller 90 increases the opening of the air volume control valve 3 according to a preset execution program in response to the signal from the door height sensor 70; when the door height sensor 70 senses that the height of the window 4 is changed from high to low, the variable air volume controller 90 reduces the opening of the air exhaust air volume control valve 3 according to a preset execution program according to the signal of the door height sensor 70, so that the opening of the air exhaust air volume control valve 3 can be respectively set to be 30%, 50%, 70% and 90% according to the condition that the height of the window 4 is closed, 20CM, 40CM and fully opened; when no person is on duty, the opening of the current air exhaust volume control valve 3 is reduced by 20%; setting the opening of the exhaust air volume control valve 3 to be 100% during emergency exhaust; therefore, the required exhaust amount can be automatically controlled according to the opening or closing of the window 4 and the height change, the safe and stable operation under various states is realized, and the effects of energy conservation and emission reduction are achieved.
In this embodiment, the exhaust air volume control valve 3 is composed of a variable air volume valve and an air valve actuator.
Further, as shown in fig. 1, the air intake system 2 includes a refrigeration device 21 and a filter module 22, and the filter module 22 is communicated with the refrigeration device 21 through a connecting pipe 23; a cold air pipe 25 is arranged on an air outlet of the refrigeration equipment 21; the cold air duct 25 communicates with a laboratory 100.
In this embodiment, the operation of the refrigerating apparatus 21 is controlled by the opening degree of the exhaust air volume control valve 6, thereby achieving energy-saving exhaust while reducing the temperature fluctuation of the laboratory 100.
Further, as shown in fig. 2 and 4, the window lifting mechanism 7 includes a guide wheel set 71, a rope 72, a counterweight 73 and a rope winder 74;
the guide wheel groups 71 are symmetrically arranged at the top of the fume hood body 1; the counterweight hammer 73 is positioned at the back of the fume hood body 1 and is connected with the fume hood body 1 in an up-down sliding way through a guide rail pair; the rope winder 74 is positioned below the counter weight 73 and is fixedly connected with the fume hood body 1; one end of the rope 72 is fixedly connected with the top of the window 4, and the other end of the rope bypasses the guide wheel group 71 and is fixedly connected with the counterweight hammer 73; the rope winding device 74 is connected with the counterweight hammer 73 through a rope winding;
the rope winder 74 is electrically connected to the infrared sensor 80 located at the operation port 40.
In this embodiment, when the human body infrared sensor 80 senses that the window 4 is from no person to a person, the rope winding device 74 is automatically controlled to rotate the winding rope in the forward direction, and the weight 73 is driven to move upwards along the guide rail pair relative to the fume hood body 1, so that the window 4 is lifted to a safe height under the action of the guide wheel set 71 combined with the rope 72; instead, the automatic control rope winder 74 rotates reversely from the manned state to the unmanned state until the window 4 is lowered to the set minimum height, thereby realizing the automatic control of opening or closing the window 4 when the manned state or the unmanned state is achieved.
Further, as shown in fig. 2, 3 and 4, an elbow touch switch 8 is further disposed on one side of the operation port 40; the elbow touch switch 8 is electrically connected with the window lifting mechanism 7.
In this embodiment, when it is necessary to control the window 4 to move up and down by the toggle touch switch 8, the toggle double-click corresponding to the toggle touch switch 8 indicates that the window 4 is moving up (controls the rope winder 74 to rotate forward), and continues the toggle double-click indicates that the window 4 stops moving (controls the rope winder 74 to stop rotating); an elbow click corresponds to the elbow click touch switch 8, and indicates that the window 4 descends (controls the rope winder 74 to reversely rotate), and continues the elbow click, and indicates that the window 4 stops moving (controls the rope winder 74 to stop rotating); thereby realizing that the window 4 is controlled to rise and fall through the elbow clicking touch switch 8 quickly and conveniently under the conditions of freeing hands and not helping others.
Further, as shown in fig. 2, 3 and 4, a wind speed sensor 9 for detecting the surface wind speed is further disposed at one side of the operation port 40; the wind speed sensor 9 is electrically connected with the exhaust air volume control valve 3.
In the embodiment, the surface air speed of the operation port 40 is monitored in real time by arranging the air speed sensor 9, and the change of the surface air speed is ensured to be between 0.3 and 0.8m/s by controlling the opening degree of the air inlet volume control valve, so that toxic gas is further prevented from overflowing, and the safety is improved.
Further, as shown in fig. 3 and 4, the experiment chamber 201 is provided with a gas detection sensor 300 for detecting toxic gas on the baffle 10; the gas detection sensor 300 is electrically connected with the exhaust air volume control valve 3.
In this embodiment, the opening degree of the intake air volume control valve is controlled by providing the gas detection sensor 300 to monitor whether or not there is toxic gas in the experimental chamber 201 in real time, thereby ensuring that the toxic gas is rapidly discharged out of the room by adjusting the exhaust air volume.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.
Claims (6)
1. The energy-saving multistable variable-air-volume ventilating cabinet comprises a ventilating cabinet body and an air inlet system, wherein the ventilating cabinet body and the air inlet system are arranged in a laboratory, and the energy-saving multistable variable-air-volume ventilating cabinet is characterized in that an experiment area is arranged in the ventilating cabinet body; a deflector with an exhaust hole is arranged in the experimental area; the flow guide plate divides the experimental area into an experimental chamber and an exhaust air duct from front to back; an air outlet is arranged above the air exhaust duct; an exhaust air volume control valve is arranged on the exhaust outlet;
an operation port is formed in the front of the experiment chamber; symmetrical guide grooves are formed in the inner side of the operation opening; a window which is in clearance fit with the guide groove is arranged in the guide groove;
the rear side of the fume chamber body, which is positioned in the experimental area, is provided with a window lifting mechanism for driving the window to slide along the guide groove; one side of the operation port is provided with a door height sensor for detecting the height of the window; a human body infrared sensor and a variable air volume controller are respectively arranged above and at one side of the operation opening of the fume chamber body;
the human body infrared sensor, the door height sensor and the air exhaust volume control valve are electrically connected with the variable air volume controller.
2. An energy-saving multistable variable air volume fume hood according to claim 1 wherein the air intake system comprises a refrigeration device and a filtration module, the filtration module being in communication with the refrigeration device through a connecting tube; the air outlets of the refrigeration equipment are respectively provided with a cold air pipe; the cold air pipe is communicated with a laboratory.
3. The energy-saving multistable variable air volume fume hood according to claim 1, wherein the window lifting mechanism comprises a guide wheel group, a rope, a counter weight and a rope winder;
the guide wheel sets are symmetrically arranged at the top of the fume hood body; the counterweight hammer is positioned at the back of the fume hood body and is connected with the fume hood body in an up-down sliding way through the guide rail pair; the rope winder is positioned below the counter weight hammer and is fixedly connected with the fume hood body; one end of the rope is fixedly connected with the top of the window, and the other end of the rope bypasses the guide wheel group and is fixedly connected with the counterweight hammer; the rope winding device is connected with the counterweight hammer through a rope winding;
the rope winder is electrically connected with the human body infrared sensor positioned at the operation port.
4. An energy-saving multistable variable air volume fume hood according to claim 3 wherein an elbow touch switch is also provided on one side of the operating port; the elbow touch switch is electrically connected with the window lifting mechanism.
5. The energy-saving multistable variable air volume fume hood according to claim 1, wherein a wind speed sensor for detecting the wind speed of the surface is further arranged on one side of the operation port; the wind speed sensor is electrically connected with the exhaust air volume control valve.
6. The energy-saving multistable variable air volume fume hood according to claim 1, wherein the experimental chamber is provided with a gas detection sensor for detecting toxic gas on the guide plate; the gas detection sensor is electrically connected with the exhaust air volume control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223057196.7U CN218982633U (en) | 2022-11-17 | 2022-11-17 | Energy-saving multistable variable air volume fume chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223057196.7U CN218982633U (en) | 2022-11-17 | 2022-11-17 | Energy-saving multistable variable air volume fume chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218982633U true CN218982633U (en) | 2023-05-09 |
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ID=86222211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223057196.7U Active CN218982633U (en) | 2022-11-17 | 2022-11-17 | Energy-saving multistable variable air volume fume chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218982633U (en) |
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2022
- 2022-11-17 CN CN202223057196.7U patent/CN218982633U/en active Active
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