Fresh air purifying and circulating device for laboratory

Abstract

The utility model relates to the field of fresh air devices, in particular to a laboratory fresh air purifying and circulating device which comprises a hanging box and a fresh air circulating assembly. A fresh air circulation assembly used for purifying external air and circulating air in a laboratory is installed in a suspension box and comprises an air heat exchanger, and four sets of connecting holes are annularly formed in the outer portion of the air heat exchanger; an indoor exhaust pipe, an outdoor exhaust pipe, an indoor air inlet pipe and an outdoor air inlet pipe are annularly installed outside the air heat exchanger, the indoor air inlet pipe is communicated with the outdoor air inlet pipe, the outdoor exhaust pipe is communicated with the outdoor exhaust pipe, the indoor air inlet pipe is communicated with the outdoor air inlet pipe, and the outdoor exhaust pipe is communicated with the outdoor exhaust pipe. In winter, the air heat exchanger can absorb heat of air exhausted indoors and preheat low-temperature fresh air to be introduced, indoor heat loss is reduced, and heating energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fresh air device field especially relates to a laboratory purification circulating fresh air device. BACKGROUND

[0002] The laboratory purification circulating fresh air device is an air treatment equipment for laboratory environment, which can introduce outdoor fresh air into the laboratory and circulate indoor air at the same time. Laboratory is a place for various scientific research and experiments, and different types of experiments have strict and special requirements for air quality, so a special purification circulating fresh air device is needed to accurately control air quality.

[0003] In many laboratory ventilation devices at present, the heat or cold of indoor exhaust air cannot be effectively utilized when introducing fresh air. In winter, a large amount of low-temperature fresh air introduced will cause rapid loss of indoor heat, and more heating energy is needed to maintain indoor temperature. In summer, a large amount of high-temperature fresh air will increase the load of indoor cooling equipment, resulting in significant increase of energy consumption.

[0004] Therefore, in view of the above problems of some laboratory ventilation devices at present, the heat or cold of indoor exhaust air cannot be effectively utilized when introducing fresh air, a large amount of low-temperature fresh air in winter causes loss of indoor heat, more heating energy is needed to maintain indoor temperature, and a large amount of high-temperature fresh air in summer increases the load of cooling equipment, resulting in significant increase of energy consumption. A laboratory purification circulating fresh air device can be designed by setting an air heat exchanger in the fresh air circulation assembly, four groups of connecting holes are arranged in the outer ring, and the indoor air suction pipe, outdoor exhaust pipe, indoor air inlet pipe and outdoor air inlet pipe are connected respectively. Through the structure that the indoor air inlet pipe is connected with the outdoor air inlet pipe and the outdoor exhaust pipe is connected with the outdoor exhaust pipe, heat exchange of indoor and outdoor air in the air heat exchanger is realized. In winter, the air heat exchanger can absorb the heat of indoor exhaust air, preheat the low-temperature fresh air to be introduced, reduce the loss of indoor heat, and reduce the heating energy consumption. SUMMARY

[0005] In order to overcome the problem that the heat or cold of indoor exhaust air cannot be effectively utilized when introducing fresh air in some laboratory ventilation devices at present, a large amount of low-temperature fresh air in winter causes loss of indoor heat, more heating energy is needed to maintain indoor temperature, and a large amount of high-temperature fresh air in summer increases the load of cooling equipment, resulting in significant increase of energy consumption.

[0006] The utility model discloses a technical scheme for a laboratory purification circulating fresh air device, which comprises a suspension box and a fresh air circulation assembly.

[0007] Preferably, when the laboratory purification circulating fresh air device starts to work, the outdoor air inlet pipe first inhales fresh air from the outside, the fresh air enters the air heat exchanger through the channel connected with the indoor air inlet pipe, in the air heat exchanger, the outdoor fresh air exchanges heat with the indoor air drawn in by the indoor air outlet pipe, then, the outdoor fresh air after heat exchange flows from the air heat exchanger to the indoor air inlet pipe and is sent into the laboratory interior through the indoor air inlet pipe, achieving the input of fresh air, at the same time, the indoor air outlet pipe continuously draws the air in the laboratory interior and transports it to the air heat exchanger for heat exchange, the indoor air after heat exchange is discharged to the outside through the outdoor air outlet pipe through the channel connected with the outdoor air outlet pipe, thereby completing the circulation and discharge process of indoor air, and continuously circulating to continuously realize the purification and introduction of external air and the circulation and update of air in the laboratory interior.

[0008] Preferably, the indoor air outlet pipe and the indoor air inlet pipe are both provided with indoor grating plates at the bottom ends, and the outdoor air outlet pipe and the outdoor air inlet pipe are both provided with outdoor grating plates at the top ends.

[0009] Preferably, the indoor air outlet pipe is provided with a primary motor at the top end, and is provided with an air blower inside, the output end of the primary motor is connected with the transmission end of the air blower, and the indoor air outlet pipe is provided with an exhaust hole at one side.

[0010] Preferably, the indoor air inlet pipe is provided with a secondary motor at one side, is provided with an air inlet blower inside, the output end of the secondary motor is connected with the transmission end of the indoor air inlet pipe, the indoor air inlet pipe is provided with an air inlet hole at the side away from the secondary motor, and is provided with an activated carbon adsorption layer close to the indoor grating plate inside.

[0011] Preferably, the outdoor air inlet pipe is linearly provided with three filter plates outside, is linearly provided with a sliding groove outside for mounting the filter plates, and is provided with a handle at the top end close to the side edge.

[0012] As preferred, two groups of ultraviolet irradiation plates are symmetrically installed at the bottom end of the hanging box, an outer shell is sleeved at the top end of the hanging box, a maintenance reserved opening is formed through the two sides of the bottom end of the hanging box, a maintenance plate is installed inside the maintenance reserved opening, and a maintenance handle is installed at the bottom end of the maintenance plate.

[0013] As preferred, a lighting lamp is installed at the center of the bottom end of the hanging box, two groups of power supplies are respectively installed at the two sides of the indoor air suction pipe inside the hanging box, and the two groups of ultraviolet irradiation plates and the lighting lamp are electrically connected with the two groups of power supplies.

[0014] The beneficial effects of the utility model are as follows: the air heat exchanger is arranged in the fresh air circulation assembly, four groups of connecting holes are formed in the outer ring, and the indoor air suction pipe, the outdoor air exhaust pipe, the indoor air inlet pipe and the outdoor air inlet pipe are connected respectively, the indoor air inlet pipe and the outdoor air inlet pipe are connected in communication, and the outdoor air exhaust pipe and the outdoor air exhaust pipe are connected in communication, so that heat exchange of indoor and outdoor air in the air heat exchanger is realized, in winter, the air heat exchanger can absorb the heat of indoor exhaust air, preheat low-temperature fresh air to be introduced, reduce indoor heat loss and heating energy consumption, compared with the device without heat exchange function, heating energy can be saved, in summer, the device can cool high-temperature fresh air by using indoor cold air, reduce the load of refrigeration equipment and refrigeration energy consumption, under the same refrigeration demand, the operation time of laboratory refrigeration equipment using the device can be shortened, energy utilization efficiency is significantly improved, laboratory operation cost is reduced, the filter plate can filter large particles of dust, small pollen and microorganisms and other impurities in outdoor air layer by layer, the activated carbon adsorption layer can adsorb harmful gas and odor, the concentration of harmful gas such as formaldehyde and benzene in indoor air can be reduced, and the ultraviolet irradiation plate can kill bacteria, viruses and other pathogens in air. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The whole structure schematic diagram of the laboratory purification circulating fresh air device is shown.

[0016] Figure 2 The fresh air circulation assembly structure schematic diagram of the laboratory purification circulating fresh air device is shown.

[0017] Figure 3 The indoor air suction pipe structure schematic diagram of the laboratory purification circulating fresh air device is shown.

[0018] Figure 4 The indoor air inlet pipe structure schematic diagram of the laboratory purification circulating fresh air device is shown.

[0019] Explanation of reference signs: 1, suspension box; 101, shell; 102, ultraviolet irradiation plate; 103, illuminating lamp; 104, maintenance plate; 105, maintenance handle; 106, power supply; 201, air heat exchanger; 202, indoor air suction pipe; 203, outdoor exhaust pipe; 204, indoor air inlet pipe; 205, outdoor air inlet pipe; 206, air suction fan; 207, exhaust hole; 208, air inlet fan; 209, air inlet hole; 210, primary motor; 211, outdoor grid plate; 212, filter plate; 213, indoor grid plate; 214, activated carbon adsorption layer; 215, secondary motor. DETAILED DESCRIPTION

[0020] The utility model is further explained below in combination with the drawings and examples.

[0021] Please refer to Figures 1-4 The utility model provides a kind of example: a laboratory purification circulating fresh air device, including suspension box 1, fresh air circulation component;Suspension box 1 inside is equipped with the fresh air circulation component for purifying outside air and circulating laboratory internal air, and fresh air circulation component includes air heat exchanger 201, and four groups of connecting holes are opened in the annular outside air heat exchanger 201, and air heat exchanger 201 outside is annularly equipped with indoor air suction pipe 202, outdoor exhaust pipe 203, indoor air inlet pipe 204 and outdoor air inlet pipe 205, and indoor air suction pipe 202, outdoor exhaust pipe 203, indoor air inlet pipe 204 and outdoor air inlet pipe 205 are all L-shaped, wherein indoor air inlet pipe 204 and outdoor air inlet pipe 205 are communicated, and outdoor exhaust pipe 203 and outdoor exhaust pipe 203 are communicated, when the laboratory purification circulating fresh air device starts to work, outdoor air inlet pipe 205 first inhales outside fresh air, and fresh air is communicated with indoor air inlet pipe 204 through channel, enters air heat exchanger 201, in air heat exchanger 201, outdoor fresh air and indoor air that indoor air suction pipe 202 draws in are exchanged, then, after heat exchange, outdoor fresh air after heat exchange flows from air heat exchanger 201 to indoor air inlet pipe 204, and is sent into laboratory interior by indoor air inlet pipe 204, realizes the input of fresh air, while, indoor air suction pipe 202 continuously extracts air in laboratory interior, and it is transported to air heat exchanger 201 to exchange heat, and indoor air after heat exchange is communicated with outdoor exhaust pipe 203 through channel, and is discharged to outdoor through outdoor exhaust pipe 203, to complete the circulation and discharge process of indoor air, so continuously circulate, and continuously realize the purification of outside air and the circulation update of laboratory internal air.

[0022] Please refer to Figures 2-3In the embodiment, the indoor air extraction pipe 202 and the indoor air inlet pipe 204 are both provided with indoor grating plates 213, the outdoor air exhaust pipe 203 and the outdoor air inlet pipe 205 are both provided with outdoor grating plates 211, the indoor grating plates 213 are installed at the bottom ends of the indoor air extraction pipe 202 and the indoor air inlet pipe 204, which can effectively block larger particulate impurities inside the laboratory, and the indoor grating plates 213 can uniformly disperse the incoming and outgoing air flow, when the indoor air extraction pipe 202 extracts indoor air, the grating plates can prevent the air flow speed in the local area from being too fast, so that the indoor air is more evenly sucked into the pipeline, when the indoor air inlet pipe 204 delivers fresh air to the indoor, the grating plates can disperse the air flow into multiple small air flows and blow them to each corner of the indoor evenly, avoiding the situation that the air flow is concentrated in a certain place, thereby improving the uniformity and comfort of indoor air circulation, the indoor air extraction pipe 202 is provided with a primary motor 210 at the top end, the indoor air extraction pipe 202 is internally provided with an air extractor 206, the output end of the primary motor 210 is connected with the transmission end of the air extractor 206, the indoor air extraction pipe 202 is provided with an exhaust hole 207 on one side, the primary motor 210 is connected with the air extractor 206, which provides strong power for extracting indoor air, the high-speed output of the primary motor 210 can drive the air extractor 206 to run quickly, forming strong negative pressure in the indoor air extraction pipe 202, which efficiently sucks indoor air into the pipe, the exhaust hole 207 provided on one side of the indoor air extraction pipe 202 provides flexible adjustment means for ventilation in the local area of the indoor, in the laboratory, some experimental operations may produce high concentration of harmful gas or heat in certain areas, by controlling the opening and closing state or adjusting the opening size of the exhaust hole 207, targeted strengthening ventilation can be performed on these local areas.

[0023] Please refer to Figures 2-4In this embodiment, the indoor air inlet pipe 204 is provided with a secondary motor 215 on one side, and an air inlet fan 208 is installed inside the indoor air inlet pipe 204. The output end of the secondary motor 215 is connected to the transmission end of the indoor air inlet pipe 204. An air inlet hole 209 is formed on the side of the indoor air inlet pipe 204 away from the secondary motor 215. An activated carbon adsorption layer 214 is installed inside the indoor air inlet pipe 204 near the indoor grid plate 213. The secondary motor 215 is connected to the air inlet fan 208 to provide strong power for delivering the purified fresh air to the indoor. The stable output of the secondary motor 215 can drive the air inlet fan 208 to run at high speed, generating strong positive pressure to quickly and efficiently send the fresh air that has been heat exchanged by the air heat exchanger 201 and subsequently processed into the indoor. The air inlet hole 209 helps to optimize the airflow distribution in the indoor. It breaks the single mode of delivering fresh air to the indoor from the bottom only, allowing fresh air to enter the indoor from different positions to form a more uniform airflow field. Three groups of filter plates 212 are linearly installed on the outside of the outdoor air inlet pipe 205. Sliding grooves for installing the filter plates 212 are linearly formed on the outside of the outdoor air inlet pipe 205. Handles are formed through the top end of the filter plates 212 near the side edge. The three groups of filter plates 212 linearly installed on the outside of the outdoor air inlet pipe 205 perform multi-level filtration on the incoming outdoor air. Different filter plates 212 can target different particle sizes of impurities.

[0024] Please refer to Figures 1-2 In this embodiment, two groups of ultraviolet irradiation plates 102 are symmetrically installed at the bottom end of the suspension box 1. An outer shell 101 is sleeved on the top end of the suspension box 1. Maintenance reserved openings are formed through the bottom end of the suspension box 1 on both sides of one group of ultraviolet irradiation plates 102. A maintenance plate 104 is installed inside the maintenance reserved opening. A maintenance handle 105 is installed at the bottom end of the maintenance plate 104. The two groups of ultraviolet irradiation plates 102 symmetrically installed at the bottom end of the suspension box 1 perform ultraviolet disinfection on the air during the fresh air circulation process. Ultraviolet rays can damage the DNA or RNA structure of microorganisms, making them lose the ability to reproduce and survive, thereby effectively killing pathogens in the air. In a laboratory environment, the presence of microorganisms may affect experimental results, especially in biological and medical laboratories. The ultraviolet irradiation plates 102 can significantly reduce the content of microorganisms in the air, providing a cleaner air environment for experiments. A lighting lamp 103 is installed at the center of the bottom end of the suspension box 1. Two groups of power supplies 106 are installed inside the suspension box 1 on both sides of the outdoor air inlet pipe 205. The two groups of ultraviolet irradiation plates 102 and the lighting lamp 103 are electrically connected to the two groups of power supplies 106. The lighting lamp 103 installed at the center of the bottom end of the suspension box 1 provides an additional lighting source for the laboratory. Good lighting conditions are crucial when performing experiments. They enable experimenters to observe experimental phenomena and read experimental data more clearly, avoiding operation errors or data reading errors caused by insufficient light.

[0025] In the process of working, the outdoor fresh air enters the device from the outdoor air inlet pipe 205, in the process, first passes through the linearly installed three groups of filter plates 212, which are installed through the sliding groove on the outdoor air inlet pipe 205, can filter the outdoor air layer by layer, from large particle dust to small pollen, microorganisms and other impurities can be effectively intercepted, the air after preliminary filtration enters the indoor air inlet pipe 204 connected with the outdoor air inlet pipe 205, the fresh air in the indoor air inlet pipe 204 flows into the air heat exchanger 201, at the same time, the indoor air is extracted and transported to the air heat exchanger 201 under the action of the air extractor 206 driven by the primary motor 210, in the air heat exchanger 201, the outdoor fresh air exchanges heat with the indoor air, which can not only recover the heat of the indoor air and reduce energy consumption, but also make the temperature of the fresh air entering the indoor environment closer to the indoor temperature, improve the comfort, after heat exchange, the fresh air continues to flow in the indoor air inlet pipe 204, in the process of flowing, it passes through the activated carbon adsorption layer 214 in turn, the activated carbon adsorption layer 214 can adsorb odors, harmful gases and part of small particle impurities in the air, further purify the air, then the secondary motor 215 drives the air inlet fan 208 to send the purified fresh air into the laboratory corners in different directions and ways through the air inlet hole 209 on the indoor air inlet pipe 204 and the indoor grid plate 213 at the bottom, the indoor air is extracted from different positions through the indoor grid plate 213 at the bottom and the exhaust hole 207 on the side, the exhaust hole 207 can strengthen the extraction of harmful gases or heat generated in the local area of the laboratory, the extracted indoor air is discharged outside through the outdoor exhaust pipe 203 after heat exchange through the air heat exchanger 201 under the action of the air extractor 206, the outdoor grid plate 211 at the top of the outdoor exhaust pipe 203 can prevent foreign matter from entering the pipeline, and also plays a certain dispersion role on the exhaust gas, in the process of fresh air circulation, the two groups of ultraviolet irradiation plates 102 symmetrically installed at the bottom of the suspension box 1 irradiate the air below to sterilize, destroy the DNA or RNA structure of microorganisms, reduce the content of pathogens in the air, the lighting lamp 103 at the center of the bottom of the suspension box 1 provides lighting for the laboratory, especially in the experimental operation area, it can provide clearer light, the two groups of power supplies 106 respectively supply power to the ultraviolet irradiation plate 102 and the lighting lamp 103 to ensure stable operation of the equipment, and when one group of power supply 106 fails, the other group can continue to supply power to ensure normal function, when the internal equipment of the device needs to be repaired, the maintenance personnel can operate through the maintenance reserved opening on both sides of the ultraviolet irradiation plate 102 at the bottom of the suspension box 1, hold the maintenance handle 105 at the bottom of the maintenance plate 104, open the maintenance plate 104, and repair the equipment such as fresh air circulation assembly in the suspension box 1, without disassembling the whole suspension box 1, greatly improving the maintenance efficiency and reducing the downtime.

[0026] Through the above steps, when the laboratory purification circulating fresh air device starts to work, the outdoor air inlet pipe 205 first inhales fresh air from the outside, the fresh air passes through the channel connected with the indoor air inlet pipe 204, enters the air heat exchanger 201, in the air heat exchanger 201, the outdoor fresh air exchanges heat with the indoor air sucked by the indoor air suction pipe 202, then, the outdoor fresh air after heat exchange flows from the air heat exchanger 201 to the indoor air inlet pipe 204, and is sent into the laboratory through the indoor air inlet pipe 204, realizing the input of fresh air, at the same time, the indoor air suction pipe 202 continuously sucks the air in the laboratory, and sends it to the air heat exchanger 201 for heat exchange, the indoor air after heat exchange is discharged to the outdoor through the channel connected with the outdoor air exhaust pipe 203, and then discharged to the outdoor through the outdoor air exhaust pipe 203, thereby completing the circulation and discharge process of indoor air, so as to continuously realize the purification and introduction of external air and the circulation and update of air in the laboratory.

Claims

1. A laboratory purification circulating fresh air device, comprising a suspension box (1); characterized in that: The new air circulation assembly is installed in the suspension box (1) and used for purifying external air and circulating air in the laboratory.

2. The laboratory purification circulating fresh air device according to claim 1, characterized in that: The indoor air suction pipe (202) and the indoor air inlet pipe (204) are both provided with an indoor grid plate (213) at the bottom end.

3. The laboratory clean air supply device of claim 2, wherein: The indoor air suction pipe (202) is provided with a first motor (210) at the top end, and the indoor air suction pipe (202) is internally provided with an air suction fan (206).

4. The laboratory clean air supply device of claim 2, wherein: The indoor air inlet pipe (204) is provided with a second motor (215) on one side, and the indoor air inlet pipe (204) is internally provided with an air inlet fan (208).

5. The laboratory decontamination air handling unit of claim 1, wherein: The outdoor air inlet pipe (205) is linearly provided with three filter plates (212) on the outside, and the outdoor air inlet pipe (205) is linearly provided with a sliding groove for installing the filter plate (212) on the outside.

6. The laboratory decontamination air handling unit of claim 1, wherein: The suspension box (1) is symmetrically provided with two ultraviolet irradiation plates (102) at the bottom end, and the suspension box (1) is provided with an outer shell (101) at the top end.

7. The laboratory decontamination air handling unit of claim 6, wherein: The suspension box (1) is provided with a maintenance reserved opening on both sides of one of the ultraviolet irradiation plates (102) at the bottom end, and the maintenance reserved opening is internally provided with a maintenance plate (104). The suspension box (1) is internally provided with two power supplies (106) on both sides of the outdoor air inlet pipe (205), and the two ultraviolet irradiation plates (102) and the lighting lamp (103) are both electrically connected with the two power supplies (106).

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