CN219073854U - Energy-saving air supplementing type fume chamber - Google Patents
Energy-saving air supplementing type fume chamber Download PDFInfo
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- CN219073854U CN219073854U CN202223060173.1U CN202223060173U CN219073854U CN 219073854 U CN219073854 U CN 219073854U CN 202223060173 U CN202223060173 U CN 202223060173U CN 219073854 U CN219073854 U CN 219073854U
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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 air supplementing type ventilating cabinet which comprises a ventilating cabinet body and an air inlet system, wherein the ventilating cabinet body is arranged in a laboratory, and an experimental area consisting of an upper coaming, a lower coaming, a rear coaming, a left coaming and a right coaming is arranged in the ventilating cabinet body; an exhaust outlet is formed in the position, located at the exhaust air duct, of the upper coaming; the exhaust outlet is communicated with an exhaust system; an air supplementing pipeline is arranged at the outer side of the experimental area; the air supplementing pipeline is provided with an air supplementing inlet; the air supplementing inlet is communicated with the air inlet system. According to the utility model, through optimizing the structure of the air inlet system, the input and the discharge of cold air are reduced, so that the fresh air refrigerating energy consumption is saved, and the energy-saving air supplementing is realized; meanwhile, the left air supplementing flat pipe and the right air supplementing flat pipe are arranged on the left side and the right side of the fume hood body, so that the depth of the fume hood body is reduced, the wind resistance is reduced, and the air supplementing effect is improved; and to the structural optimization of air supply passageway, save the multicavity formula air supply pipeline that the structure is complicated, promote air supply air-out effect, with low costs and simple to operate.
Description
Technical Field
The utility model relates to the technical field of laboratories, in particular to an energy-saving air supplementing type ventilating cabinet.
Background
Fume hoods are important devices in laboratories to control contaminants. The function of the indoor air-supplementing pipeline is that pollutants emitted in the cabinet are discharged outdoors, and the pollutants are prevented from being dissipated indoors from the operation port through the air-supplementing pipeline, so that the health and safety of experimental personnel are endangered.
In the prior art, the temperature of a laboratory is controlled to be between 21 and 25 ℃ through a refrigeration device, but when pollutants are discharged outdoors from a ventilation cabinet, cold air in the laboratory can enter the ventilation cabinet to be discharged along with the pollutants under the action of an exhaust system, and meanwhile, the refrigeration device is required to maintain the temperature of the laboratory and also is required to supply air supplement for an air supplement pipeline, so that the output of the cold air is increased, and the energy consumption is increased.
In addition, the air supplementing pipeline structure in the prior art is complex in arrangement, the overall depth of the fume hood is increased, the manufacturing cost is increased, and the installation is inconvenient due to the fact that the connecting parts are involved.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the energy-saving air supplementing type ventilating cabinet, which reduces the input and the discharge of cold air by optimizing the structure of an air inlet system, thereby saving the energy consumption of fresh air refrigeration and realizing energy saving and air supplementing; meanwhile, the left air supplementing flat pipe and the right air supplementing flat pipe are arranged on the left side and the right side of the fume hood body, so that the depth of the fume hood body is reduced, the wind resistance is reduced, and the air supplementing effect is improved; and to the structural optimization of air supply passageway, save the multicavity formula air supply pipeline that the structure is complicated, promote air supply air-out effect, with low costs and simple to operate.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
the energy-saving air supplementing type fume hood comprises a fume hood body and an air inlet system, wherein the fume hood body and the air inlet system are arranged in a laboratory, and an experimental area consisting of an upper coaming, a lower coaming, a rear coaming, a left coaming and a right coaming is arranged in the fume hood body; an operation port is arranged in front of the experimental area;
a lower guide plate and an upper guide plate which are sequentially connected are arranged in the experimental area; the lower guide plate and the upper guide plate divide the experimental area into an experimental chamber and an exhaust air duct from front to back; the lower guide plate is provided with an exhaust hole; an exhaust outlet is formed in the position, located at the exhaust air duct, of the upper coaming; the exhaust outlet is communicated with an exhaust system through a pipeline;
an air supplementing pipeline for providing air supplementing for the experiment chamber is arranged on the outer side of the experiment area; the air supplementing pipeline is provided with an air supplementing inlet; the air supplementing inlet is communicated with the air inlet system;
the air conditioner further comprises a control module, wherein the control module is electrically connected with the air inlet system, the air supplementing pipeline and the air exhaust system.
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; an air inlet pipe and a cold air pipe are respectively arranged on an air inlet of the filtering module and an air outlet of the refrigerating equipment; the cold air pipe is communicated with a laboratory;
the connecting pipe is also provided with a bypass pipe communicated with the connecting pipe; the other end of the bypass pipe is communicated with the air supplementing pipeline through an air supplementing inlet; the bypass pipe is provided with an air quantity control valve and a fan;
the experiment chamber is provided with a gas detection sensor for detecting pollutants on the lower guide plate;
the gas detection sensor, the fan and the control valve are electrically connected with the control module.
Preferably, one sides of the upper coaming, the left coaming and the right coaming, which are close to the operation opening, are respectively provided with an upper air supplementing opening, a left air supplementing opening and a right air supplementing opening which face the experimental chamber;
the air supplementing pipeline comprises an upper air supplementing flat pipe, a lower air supplementing pipe, a left air supplementing flat pipe and a right air supplementing flat pipe; the left air supplementing flat pipe and the right air supplementing flat pipe are respectively arranged at the outer sides of the left coaming and the right coaming; the upper air supplementing flat pipe is arranged at the outer side of the upper coaming; the lower air supplementing pipe is arranged at the position of the lower coaming plate at the operation opening;
the middle part of the upper surface of the upper air supplementing flat pipe is provided with an air supplementing inlet, and the left end and the right end of the upper air supplementing flat pipe are respectively communicated with the left air supplementing flat pipe and the right air supplementing flat pipe; the left side and the right side of the lower air supplementing pipe are communicated with the other ends of the left air supplementing flat pipe and the right air supplementing flat pipe;
an upper air supplementing air outlet which corresponds to the upper air supplementing opening and faces the experimental chamber is arranged on the upper air supplementing flat pipe; the left air supplementing flat pipe is provided with a left air supplementing air outlet which corresponds to the left air supplementing opening and faces the experimental chamber; the right air supplementing flat pipe is provided with a right air supplementing air outlet which corresponds to the right air supplementing opening and faces the experimental chamber; and a lower air compensating port facing the experimental chamber is arranged on the lower air compensating pipe.
Preferably, the upper air supplementing flat pipe is provided with a first sealing groove around the outer side of the upper air supplementing air outlet; the left air supplementing flat pipe is positioned at the periphery of the outer side of the left air supplementing air outlet, and the periphery of the right air supplementing flat pipe positioned at the outer side of the right air supplementing air outlet is respectively provided with a second sealing groove;
and sealing rings are arranged on the first sealing groove and the second sealing groove.
Preferably, the upper coaming is located at the upper air supplementing opening, the left coaming is located at the left air supplementing opening, the right coaming is located at the right air supplementing opening, and the lower air supplementing pipe is located at the lower air supplementing opening, and air speed sensors for detecting air speed of air supplementing are arranged.
Preferably, the fan is a variable frequency fan.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, through optimizing the structure of the air inlet system, the bypass pipe is arranged on the connecting pipe for connecting the refrigerating equipment and the filtering module and is connected with the air supplementing inlet of the air supplementing pipeline, under the action of the air quantity control valve and the fan, the air supplementing without passing through the refrigerating equipment enters the laboratory cavity through the bypass pipe and the air supplementing pipeline, then the pollutant and the air supplementing entering the laboratory cavity are discharged out of the room together by the air exhaust system, so that the pollutant is prevented from overflowing out of the room, the discharge of cold air in the laboratory is reduced, and the refrigerating equipment is also saved to supply cold air for the air supplementing pipeline, thereby achieving the purposes of saving energy and supplementing air.
2. The left air supplementing flat pipe and the right air supplementing flat pipe are arranged on the left side and the right side of the fume chamber body, so that the depth of the fume chamber body is reduced, the number of corners of the left air supplementing flat pipe and the right air supplementing flat pipe is reduced, wind resistance is reduced, and the air supplementing and air outlet effect is improved.
3. Optimize the structure of air supply passageway, save the multicavity formula air supply pipeline that the structure is complicated, make the air supply air outlet of each air supply flat pipe directly communicate with the air supply mouth of each bounding wall to make the air supply directly get into the experiment cavity behind each air supply flat pipe, not only promoted air supply air-out effect, with low costs and simple to operate moreover.
Drawings
FIG. 1 is a schematic diagram of a structure of a fume hood body connected with an air intake system and an air exhaust system;
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 top view of the present utility model;
FIG. 5 is a schematic view of the cross-sectional structure A-A in FIG. 3;
FIG. 6 is a schematic view of the cross-sectional structure B-B in FIG. 4;
FIG. 7 is an enlarged schematic view of a portion of FIG. 6 at C;
FIG. 8 is an enlarged schematic view of a portion of FIG. 6 at D;
FIG. 9 is a schematic diagram of a ventilation pipeline according to the present utility model;
FIG. 10 is an enlarged partial schematic view of FIG. 9 at E;
wherein: the air conditioning system comprises a ventilation cabinet body 1, an air inlet system 2, an experiment area 3, an air exhaust system 4, an air supplementing pipeline 5, a control module 6, a gas detection sensor 7, a sealing ring 8, an air speed sensor 9, a refrigeration device 21, a filtering module 22, a connecting pipe 23, an air inlet pipe 24, a cold air pipe 25, a bypass pipe 26, an air quantity control valve 27, a fan 28, an experiment chamber 31, an air exhaust duct 32, an upper air supplementing flat pipe 51, a lower air supplementing pipe 52, a left air supplementing flat pipe 53, a right air supplementing flat pipe 54, an air outlet 101, an upper air supplementing port 102, a left air supplementing port 401, a right air supplementing port 501, an air supplementing inlet 511, an upper air supplementing outlet 512, a lower air supplementing port 521, a left air supplementing outlet 531, a right air supplementing outlet 541, an upper coaming 10, a lower coaming 20, a rear coaming 30, a left coaming 40, a right coaming 50, an operation port 60, a lower flow guiding plate 70, an upper flow guiding plate 80, a laboratory 100, a first sealing groove 200 and a second sealing groove 300.
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. 1-10, an energy-saving air supplementing type 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 experimental area 3 consisting of an upper coaming 10, a lower coaming 20, a rear coaming 30, a left coaming 40 and a right coaming 50 is arranged in the fume hood body 1; an operation port 60 is arranged in front of the experiment area 3;
a lower deflector 70 and an upper deflector 80 which are sequentially connected are arranged in the experimental zone 3; the lower deflector 70 and the upper deflector 80 divide the experimental zone 3 into an experimental chamber 31 and an exhaust air duct 32 from front to back; the lower deflector 70 is provided with an exhaust hole; an exhaust outlet 101 is formed in the position, located at the exhaust air duct 32, of the upper coaming 10; the exhaust outlet 101 is communicated with the exhaust system 4 through a pipeline;
an air supplementing pipeline 5 for providing air supplementing for the experiment chamber 31 is arranged on the outer side of the experiment area 3; the air supplementing pipeline 5 is provided with an air supplementing inlet 511; the air supplementing inlet 511 is communicated with the air inlet system 2;
the air conditioner further comprises a control module 6, wherein the control module 6 is electrically connected with the air inlet system 2, the air supplementing pipeline 5 and the air exhaust system 4.
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; an air inlet pipe 24 and a cold air pipe 25 are respectively arranged on the air inlet of the filter module 22 and the air outlet of the refrigeration equipment 21; the cold air pipe 25 is communicated with a laboratory 100;
the connecting pipe 23 is also provided with a bypass pipe 26 communicated with the connecting pipe 23; the other end of the bypass pipe 26 is communicated with the air supplementing pipeline 5 through an air supplementing inlet 511; the bypass pipe 26 is provided with an air quantity control valve 27 and a fan 28;
the experiment chamber 31 is provided with a gas detection sensor 7 for detecting pollutants on the lower guide plate 70;
the gas detection sensor 7, the fan 28 and the control valve are electrically connected with the control module 6.
In this embodiment, when the gas detection sensor 7 detects that the laboratory chamber 31 has pollutant emissions, the control module 6 controls the fan 28 and the exhaust system 4 to operate and controls the air volume control valve 27 to open, so that the air supplement which does not pass through the refrigeration equipment 21 enters the laboratory chamber 31 through the bypass pipe 26 and the air supplement pipeline 5, and then the exhaust system 4 discharges the pollutant and the air supplement which enters the laboratory chamber 31 out of the room together, so that the discharge of cold air in the laboratory 100 is reduced while the pollutant is prevented from overflowing the room, and the refrigeration equipment 21 is saved to supply cold air for the air supplement pipeline 5; compared with a common ventilating cabinet, the indoor refrigerating fresh air emission is reduced by more than 70% under the condition of reducing the temperature fluctuation of a laboratory 100, the fresh air refrigerating energy consumption is saved by 70%, and the energy-saving air supplementing is realized.
Further, as shown in fig. 2, 3, 4, 5, 6, 9, and 10, the sides of the top board 10, the left board 40, and the right board 50 near the operation opening 60 are respectively provided with an upper air supply opening 102, a left air supply opening 401, and a right air supply opening 501 facing the experimental chamber 31;
the air supplementing pipeline 5 comprises an upper air supplementing flat pipe 51, a lower air supplementing pipe 52, a left air supplementing flat pipe 53 and a right air supplementing flat pipe 54; the left air supplementing flat pipe 53 and the right air supplementing flat pipe 54 are respectively arranged at the outer sides of the left coaming 40 and the right coaming 50; the upper air supplementing flat pipe 51 is arranged on the outer side of the upper coaming 10; the lower air supplementing pipe 52 is arranged on the lower coaming 20 and positioned at the operation opening 60;
the middle part of the upper surface of the upper air supplementing flat pipe 51 is provided with an air supplementing air inlet 511, and the left end and the right end are respectively communicated with the left air supplementing flat pipe 53 and the right air supplementing flat pipe 54; the left and right sides of the lower air supplementing pipe 52 are communicated with the other ends of the left air supplementing flat pipe 53 and the right air supplementing flat pipe 54;
an upper air-compensating air outlet 512 which corresponds to the upper air-compensating opening 102 and faces the experiment chamber 31 is arranged on the upper air-compensating flat pipe 51; the left air-supplementing flat pipe 53 is provided with a left air-supplementing air outlet 531 which corresponds to the left air-supplementing opening 401 and faces the experimental chamber 31; a right air-supplementing air outlet 541 which corresponds to the right air-supplementing opening 501 and faces the experimental chamber 31 is arranged on the right air-supplementing flat pipe 54; the lower air supply pipe 52 is provided with a lower air supply port 521 facing the laboratory 31.
In this embodiment, through setting up left air supply flat pipe 53 and right air supply flat pipe 54 in the left and right sides of fume chamber body 1, for prior art, not only reduce the degree of depth of fume chamber body 1, still reduced the length of use of each air supply flat pipe, reduced the windage of air supply air current, promoted the air supply effect.
In this embodiment, after the air flow of the air supply enters the upper air supply flat pipe 51, passes through the left air supply flat pipe 53, the right air supply flat pipe 54 and the lower air supply pipe 52, the air flow is directly blown to the experiment chamber 31 through the upper air supply port 102, the left air supply port 401 and the right air supply port 501 from the upper air supply outlet 512, the left air supply outlet 531 and the right air supply outlet 541, and is directly blown to the experiment chamber 31 through the lower air supply port 521; through above-mentioned air supply structural design, saved the multicavity formula air supply pipeline that the structure is complicated, with low costs and simple to operate.
In this embodiment, through the structural design of the air supplementing pipeline 5, the upper, lower, left and right sides of the operation port 60 of the fume hood are provided with air supplementing channels, so that pollutants are effectively prevented from overflowing from the operation port 60 into a room, and the inert flow is effectively eliminated from accumulating inside the operation port 60 by combining with the exhaust system 4.
Further, as shown in fig. 7, 8, 9, and 10, the upper air compensating flat pipe 51 is provided with a first sealing groove 200 around the outer side of the upper air compensating air outlet 512; the left air supplementing flat pipe 53 is positioned at the periphery of the outer side of the left air supplementing air outlet 531, and the right air supplementing flat pipe 54 is positioned at the periphery of the outer side of the right air supplementing air outlet 541, and second sealing grooves 300 are respectively arranged;
the first seal groove 200 and the second seal groove 300 are both provided with seal rings 8.
In this embodiment, the sealing of the junction between the upper air-supplementing flat tube 51 and the upper coaming 10, the junction between the left air-supplementing flat tube 53 and the left coaming 40, and the junction between the right air-supplementing flat tube 54 and the right coaming 50 can be ensured by the arrangement of the sealing groove and the sealing ring 8, so that the stability of the air-supplementing air flow entering the experimental chamber 31 from each air-supplementing channel is ensured, and the air-supplementing effect is greatly improved.
In this embodiment, the upper, left and right air-supplementing flat pipes 51, 53 and 54 are fixedly connected to the upper, left and right coamings 10, 40 and 50, respectively, by external connectors (not shown).
Further, as shown in fig. 2, 3, 5 and 6, the wind speed sensor 9 for detecting the wind speed of the air supply is disposed at the upper air supply port 102, the left air supply port 401, the right air supply port 501, the lower air supply port 521 and the lower air supply pipe 52 of the upper and left coaming 10 and 40.
In this embodiment, the wind speed sensor 9 is electrically connected to the fan 28; by setting the wind speed sensor 9, the wind speed of the wind supplementing duct at each position can be monitored in real time, and the rotating speed of the fan 28 is controlled according to the detected wind speed to realize automatic control of the wind supplementing speed.
Further, the fan 28 is a variable frequency fan.
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 air supplementing type fume hood comprises a fume hood body and an air inlet system, wherein the fume hood body and the air inlet system are arranged in a laboratory, and an experimental area consisting of an upper coaming, a lower coaming, a rear coaming, a left coaming and a right coaming is arranged in the fume hood body; an operation port is arranged in front of the experimental area;
a lower guide plate and an upper guide plate which are sequentially connected are arranged in the experimental area; the lower guide plate and the upper guide plate divide the experimental area into an experimental chamber and an exhaust air duct from front to back; the lower guide plate is provided with an exhaust hole; an exhaust outlet is formed in the position, located at the exhaust air duct, of the upper coaming; the exhaust outlet is communicated with an exhaust system through a pipeline;
an air supplementing pipeline for providing air supplementing for the experiment chamber is arranged on the outer side of the experiment area; the air supplementing pipeline is provided with an air supplementing inlet; the air supplementing inlet is communicated with the air inlet system;
the air conditioner further comprises a control module, wherein the control module is electrically connected with the air inlet system, the air supplementing pipeline and the air exhaust system.
2. An energy-saving and air-supplementing type fume hood according to claim 1, wherein the air inlet system comprises refrigerating equipment and a filtering module, and the filtering module is communicated with the refrigerating equipment through a connecting pipe; an air inlet pipe and a cold air pipe are respectively arranged on an air inlet of the filtering module and an air outlet of the refrigerating equipment; the cold air pipe is communicated with a laboratory;
the connecting pipe is also provided with a bypass pipe communicated with the connecting pipe; the other end of the bypass pipe is communicated with the air supplementing pipeline through an air supplementing inlet; the bypass pipe is provided with an air quantity control valve and a fan;
the experiment chamber is provided with a gas detection sensor for detecting pollutants on the lower guide plate;
the gas detection sensor, the fan and the control valve are electrically connected with the control module.
3. The energy-saving air-supplementing type fume hood according to claim 1, wherein one side of the upper coaming, the left coaming and the right coaming, which are close to the operation port, is respectively provided with an upper air supplementing port, a left air supplementing port and a right air supplementing port which face the experimental chamber;
the air supplementing pipeline comprises an upper air supplementing flat pipe, a lower air supplementing pipe, a left air supplementing flat pipe and a right air supplementing flat pipe; the left air supplementing flat pipe and the right air supplementing flat pipe are respectively arranged at the outer sides of the left coaming and the right coaming; the upper air supplementing flat pipe is arranged at the outer side of the upper coaming; the lower air supplementing pipe is arranged at the position of the lower coaming plate at the operation opening;
the middle part of the upper surface of the upper air supplementing flat pipe is provided with an air supplementing inlet, and the left end and the right end of the upper air supplementing flat pipe are respectively communicated with the left air supplementing flat pipe and the right air supplementing flat pipe; the left side and the right side of the lower air supplementing pipe are communicated with the other ends of the left air supplementing flat pipe and the right air supplementing flat pipe;
an upper air supplementing air outlet which corresponds to the upper air supplementing opening and faces the experimental chamber is arranged on the upper air supplementing flat pipe; the left air supplementing flat pipe is provided with a left air supplementing air outlet which corresponds to the left air supplementing opening and faces the experimental chamber; the right air supplementing flat pipe is provided with a right air supplementing air outlet which corresponds to the right air supplementing opening and faces the experimental chamber; and a lower air compensating port facing the experimental chamber is arranged on the lower air compensating pipe.
4. The energy-saving air-supplementing type fume hood according to claim 3, wherein the upper air-supplementing flat pipe is provided with a first sealing groove around the outer side of the upper air-supplementing air outlet; the left air supplementing flat pipe is positioned at the periphery of the outer side of the left air supplementing air outlet, and the periphery of the right air supplementing flat pipe positioned at the outer side of the right air supplementing air outlet is respectively provided with a second sealing groove;
and sealing rings are arranged on the first sealing groove and the second sealing groove.
5. An energy-saving air-supplementing type fume hood according to claim 3, wherein the upper coaming is located at the upper air supplementing opening, the left coaming is located at the left air supplementing opening, the right coaming is located at the right air supplementing opening, and the lower air supplementing pipe is located at the lower air supplementing opening, and air speed sensors for detecting air speed of air supplement are arranged.
6. An energy-saving and air-supplementing type ventilating cabinet according to claim 2, wherein the fan is a variable frequency fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060173.1U CN219073854U (en) | 2022-11-17 | 2022-11-17 | Energy-saving air supplementing type fume chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060173.1U CN219073854U (en) | 2022-11-17 | 2022-11-17 | Energy-saving air supplementing type fume chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219073854U true CN219073854U (en) | 2023-05-26 |
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ID=86404983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223060173.1U Active CN219073854U (en) | 2022-11-17 | 2022-11-17 | Energy-saving air supplementing type fume chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219073854U (en) |
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2022
- 2022-11-17 CN CN202223060173.1U patent/CN219073854U/en active Active
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