CN213454131U - Carbon dioxide concentration detection device for fresh air purifier - Google Patents
Carbon dioxide concentration detection device for fresh air purifier Download PDFInfo
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- CN213454131U CN213454131U CN202021786666.1U CN202021786666U CN213454131U CN 213454131 U CN213454131 U CN 213454131U CN 202021786666 U CN202021786666 U CN 202021786666U CN 213454131 U CN213454131 U CN 213454131U
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Abstract
A carbon dioxide concentration detection device for a fresh air purifier is characterized by comprising air switching equipment, a plurality of ventilation hoses, a sealing cavity and a controller; the air switching equipment is connected with the sealed cavity through a ventilation hose to form an airflow channel, and a carbon dioxide sensor is arranged in the sealed cavity; the controller is electrically connected with the carbon dioxide sensor and the air switching device respectively.
Description
Technical Field
The utility model relates to a domestic air purifier field, concretely relates to new trend air purifier's carbon dioxide concentration detection device field.
Background
With the continuous outbreak of the air pollution problem in China in recent years, people pay more attention to the living environment and health problems of the people. Air purifiers are also highly sought after by consumers due to frequent air pollution.
The air purifiers on the market at present have two types: the first type is a pure indoor air purifier; the second type is a fresh air purifier.
The first type of air purifier can only be used in indoor closed environment, so that indoor oxygen deficiency can be caused after long-time use, and indoor personnel can generate symptoms of dizziness and somnolence;
the second type of fresh air purifier is mainly used for continuously purifying outdoor fresh air and then sending the purified fresh air to the indoor environment. However, in order to ensure that energy does not lose, the existing fresh air purifier uses large-scale heat exchange equipment, although the effect is good, the fresh air purifier occupies a large area when being used at home.
Like a patent document of publication No. CN206803411U indoor new trend clarifier, it mentions "the utility model provides an indoor new trend clarifier, include quick-witted case, fan, switching-over valve, air filtration system, be arranged in detecting the first sensor of carbon dioxide content in the air and be arranged in detecting the second sensor of PM2.5 content in the air. The machine case is internally provided with a first accommodating cavity and a second accommodating cavity, the second accommodating cavity is close to two side walls of the pressure chamber partition plate and is respectively provided with an indoor air inlet and an outdoor air inlet which are communicated, the reversing valve slides between the indoor air inlet and the outdoor air inlet, one end of the reversing valve can be attached to the indoor air inlet, and the other end of the reversing valve can be attached to the outdoor air inlet. Therefore, when the first sensor detects that the content of carbon dioxide in the indoor air exceeds the standard, the reversing valve moves to one end of the indoor air inlet, the fan sucks the outdoor air, and the air is sent into the room, so that the concentration of PM2.5 can be reduced, the concentration of carbon dioxide can be reduced, and the health of indoor people is guaranteed. "as can be seen from the above, the first sensor for detecting the carbon dioxide content in the air is directly located at the ventilation opening, which may cause a detection error to be particularly large when the temperature difference between the inside and the outside of the air chamber is large in summer or winter, and may even cause the indoor carbon dioxide concentration to be lower than the outdoor CO2 concentration.
If again like patent document that publication number is CN205174632U an intelligence combined type static new trend clarifier, it mentions "the utility model discloses an intelligence combined type static new trend clarifier, it includes casing and control system, be provided with self-balancing formula new trend air intake on the outdoor side board of casing, be provided with the supply-air outlet that flow equalizes on the indoor side board of casing, install temperature and humidity sensor, indoor particulate matter mass concentration sensor and carbon dioxide concentration sensor in the casing of supply-air outlet department that flow equalizes, install outdoor particulate matter mass concentration sensor in proper order in the casing from self-balancing formula new trend air intake to the supply-air outlet that flow equalizes, the static filter section, antibiotic electret filter, active carbon filter and through-flow fan, install corona silk and dust collection board in the static filter section, corona silk and dust collection board link to each other with adjustable DC power supply. The device reduces the resistance of the whole filtering section under the condition of not sacrificing the filtering efficiency through the combination of the electrostatic filter and the fiber filter, which can adjust the filtering efficiency, and simultaneously improves the operating efficiency of the fresh air purifying equipment. "as can be seen from the above, the structure thereof is complicated, and the only thing tested by the carbon dioxide concentration sensor is the carbon dioxide concentration in the room.
How to research and develop a simple structure, convenient to use, small, with low costs and thereby can measure the device of indoor outer air carbon dioxide concentration simultaneously and solve fresh air purifier energy loss's problem is the research and development direction of technical staff in this field.
Disclosure of Invention
The utility model aims at realizing through the following technical scheme:
a carbon dioxide concentration detection device for a fresh air purifier comprises air switching equipment, a plurality of ventilation hoses, a sealing cavity and a controller; the air switching equipment is connected with the sealed cavity through a ventilation hose to form an airflow channel, and a carbon dioxide sensor is arranged in the sealed cavity; the controller is electrically connected with the carbon dioxide sensor and the air switching device respectively.
Further, the air switching device is an electromagnetic valve, and the battery valve is a 2-position 3-vent valve for controlling air to enter the sealed cavity.
Specifically, two air inlets on the electromagnetic valve are respectively communicated with indoor air and outdoor air through an air hose.
In more detail, the device also comprises a suction pump, wherein the suction pump is connected with the sealed cavity through a ventilation hose to form an air flow channel, and the suction pump is electrically connected with the controller.
Further, the air switching device is composed of two air pumps, namely an air pump A and an air pump B.
Specifically, the air pump A is communicated with outdoor air through an air hose, and the air pump B is communicated with indoor air through an air hose.
In more detail, the air pump a and the air pump B are respectively electrically connected with the controller.
Specifically, the two air pumps are both isolation pumps.
Further, the carbon dioxide sensor is an infrared carbon dioxide sensor.
Compared with the household fresh air purifier on the current market, the technical scheme has the following advantages:
1-simple design and structure: the air flow rate is adjusted by detecting the ratio of the indoor carbon dioxide concentration to the outdoor carbon dioxide concentration through air switching equipment and hose collection, and when the indoor oxygen is sufficient, the speed of air entering the room is reduced to achieve the purpose of energy conservation;
2-small volume: compared with the traditional fresh air machine, the heat exchanger is energy-saving, the volume of the scheme is extremely small, and the heat exchanger is convenient to install in the fresh air machine;
3-low cost: compared with complex and precise fresh air fan carbon dioxide detection equipment, the device is more suitable for household use;
the 4-carbon dioxide sensor is positioned in the closed cavity instead of the ventilation opening, so that the problem that the detection error is particularly large when the temperature difference between the inside and the outside of the air chamber is large in summer or winter can be avoided.
Drawings
Fig. 1 is a schematic view of the flow direction when the carbon dioxide concentration of outdoor air is read in example 1.
Fig. 2 is a schematic view showing the flow direction when the carbon dioxide concentration of the indoor air is read in example 1.
Fig. 3 is a schematic view of the flow direction when the carbon dioxide concentration of the outdoor air is read in example 2.
Fig. 4 is a schematic view showing the flow direction when the carbon dioxide concentration of the indoor air is read in example 2.
Description of the figures 1, 2: 1-an electromagnetic valve; 2-sealing the cavity; 21-a carbon dioxide sensor; 3-an air pump; 4-a controller; 51-a first air hose; 52-air hose one; 53-air hose III; 54-air hose four; 61-outdoor air intake; 62-indoor air intake;
reference numbers in figures 3 and 4 indicate: 11-air pump A; 12-air pump B; 2-sealing the cavity; 21-a carbon dioxide sensor; 4-a controller; 51-a first air hose; 52-air hose one; 53-air hose III; 54-air hose four; 61-outdoor air intake; 62-indoor air intake;
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 and 2, a carbon dioxide concentration detection device for a fresh air purifier includes an air switching device solenoid valve 1, a plurality of air hoses (respectively, an air hose one 51, an air hose two 52, an air hose three 53, and an air hose four 54), a sealed cavity 2, an air pump 3, and a controller 4.
The electromagnetic valve 1 is a 2-position 3-way valve, one air inlet on the electromagnetic valve 1 is communicated with outdoor air through a first air-communicating hose 51, and the other air inlet is communicated with indoor air through a second air-communicating hose 52; the air outlet of the electromagnetic valve 1 is connected with the sealed cavity 2 through a third air hose 53 to form an air flow channel.
A carbon dioxide sensor 21 is arranged in the sealed cavity 2; the sealed cavity 2 and the air suction pump 3 are connected through a four hose 54 to form an air flow passage.
The controller 4 is electrically connected to the electromagnetic valve 1, the carbon dioxide sensor 21, and the suction pump 3, respectively. The controller (12) controls the air pump 3 and the electromagnetic valve 1 to work through a lead, air circulation from the outside to the inside and air circulation from the inside to the outside can be respectively formed through the channel switching of the two air inlets of the electromagnetic valve 1, then the carbon dioxide concentration in the air from the inside and the outside can be obtained through the carbon dioxide sensor 21 in the sealed cavity 2, and therefore the best indoor air circulation mode can be automatically selected according to data comparison.
When the device is used in the fresh air purifier, the first ventilating hose 51 needs to be connected to a proper position through a pipeline to form an outdoor air inlet 61, so that outdoor fresh air can be sucked in when needed, and the second ventilating hose 52 needs to be connected to a proper position through a pipeline to form an indoor air inlet 62, so that dirty indoor air can be sucked in when needed.
When fresh air purifier normally worked, read outdoor air carbon dioxide concentration earlier, as shown in figure 1, the process is as follows:
because the electromagnetic valve 1 is a 2-position 3 vent valve, the controller 4 controls the electromagnetic valve 1 to open a passage between the outdoor air inlet 61 and the air outlet, then controls the air pump 3 to work and start air suction, because the air pump 3 is connected with the sealed cavity 2 through the vent hose four 54, and the sealed cavity 2 is connected with the electromagnetic valve 1 through the vent hose three 53, negative pressure is formed in the sealed cavity 2 when the air pump 3 pumps air, and then negative pressure is formed in an air flow channel of the electromagnetic valve 1, outdoor fresh air enters the electromagnetic valve 1 from the outdoor air inlet 61 through the vent hose one 51, and then enters the sealed cavity 2 through the air outlet of the electromagnetic valve 1 through the vent hose three 53; when the air pump 3 is continuously operated, outdoor fresh air can be continuously sucked into the sealing cavity 2. At this time, the controller 4 reads carbon dioxide concentration data of the carbon dioxide sensor 21 installed in the hermetic chamber 2, and the carbon dioxide concentration data at this time is carbon dioxide concentration of outdoor fresh air.
Next, the carbon dioxide concentration of the indoor dirty air is read, as shown in fig. 2, and the process is as follows:
the controller 4 controls the electromagnetic valve 1 to open a passage between the indoor air inlet 62 and the air outlet, then controls the air pump 3 to work and start air suction, because the air pump 3 is connected with the sealed cavity 2 through the four vent hoses 54, and the sealed cavity 2 is connected with the electromagnetic valve 1 through the three vent hoses 53, negative pressure is formed in the sealed cavity 2 when the air pump 3 pumps air, so that negative pressure is formed in an air flow channel of the electromagnetic valve 1, indoor dirty air enters the electromagnetic valve 1 from the indoor air inlet 62 through the two vent hoses 52, and then enters the sealed cavity 2 through the air outlet of the electromagnetic valve 1 through the three vent hoses 53; when the air pump 3 works continuously, indoor dirty air can be continuously sucked into the sealing cavity 2. At this time, the controller 4 reads carbon dioxide concentration data of the carbon dioxide sensor 21 installed in the sealed chamber 2, and the carbon dioxide concentration data at this time is the carbon dioxide concentration of the indoor dirty air.
When the controller 4 reads the carbon dioxide concentration data outdoors and indoors, the fresh air purifier can be informed to control the air volume entering the room, when the indoor carbon dioxide concentration is higher than that outdoors, the air volume of the fresh air purifier needs to be increased, and the higher the indoor carbon dioxide concentration is, the larger the air volume is; when the indoor carbon dioxide concentration is close to outdoors, the air supply quantity of the fresh air purifier can be reduced, when the air supply quantity is reduced, the energy consumed by the fresh air purifier is reduced, when the air conditioner is used indoors, the indoor air supply quantity is reduced, the loss of indoor cold air and indoor hot air can also be reduced, and therefore the purposes of energy conservation and emission reduction are achieved.
Example 2:
as shown in fig. 3 and 4, a carbon dioxide concentration detection device for a fresh air purifier includes two air switching devices, an air pump a11 and an air pump B12, a plurality of air hoses (respectively, an air hose one 51, an air hose two 52, an air hose three 53, and an air hose four 54), a sealed cavity 2, and a controller 4.
The air pump A11 and the air pump B12 are both isolation pumps, the air inlet of the air pump A11 is communicated with outdoor air through a first air hose 51, and the air outlet of the air pump A11 is connected with the sealed cavity 2 through a third air hose 53 to form an air flow channel; the air inlet of the air pump B12 is communicated with indoor air through the second air hose 52; the air outlet of the air pump B12 is connected with the sealed cavity 2 through the air hose four 54 to form an air flow channel. A carbon dioxide sensor 21 is arranged in the sealed cavity 2.
The controller 4 is electrically connected to the air pump a11, the air pump B12, and the carbon dioxide sensor 21, respectively. The controller (12) controls the air pump A11 and the air pump B12 to work through wires, air circulation from the outside to the inside and air circulation from the inside to the outside can be respectively formed through switching of air channels of the air pump A11 and the air pump B12, then the carbon dioxide concentration in the air in the inside and the outside can be obtained through the carbon dioxide sensor 21 in the sealed cavity 2, and therefore the optimal indoor air circulation mode can be automatically selected according to data comparison.
When the device is used in the fresh air purifier, the first ventilating hose 51 needs to be connected to a proper position through a pipeline to form an outdoor air inlet 61, so that outdoor fresh air can be sucked in when needed, and the second ventilating hose 52 needs to be connected to a proper position through a pipeline to form an indoor air inlet 62, so that dirty indoor air can be sucked in when needed.
When fresh air purifier normally worked, read outdoor air carbon dioxide concentration earlier, as shown in figure 3, the process is as follows:
the controller 4 controls the air pump a11 to operate to start air suction and simultaneously close the air pump B12, and since the air pump a11 sucks outdoor fresh air through the outdoor air inlet 61 and the first ventilation hose 51 and then continuously injects the fresh air into the sealed chamber 2 through the third ventilation hose 53, the controller 4 reads the carbon dioxide concentration data of the carbon dioxide sensor 21 installed in the sealed chamber 2, wherein the carbon dioxide concentration data is the carbon dioxide concentration of the outdoor fresh air.
Next, the carbon dioxide concentration of the indoor dirty air is read, as shown in fig. 4, and the process is as follows:
the controller 4 controls the air pump B12 to work to start air suction, and simultaneously closes the air pump a11, because the air pump B12 sucks indoor dirty air through the indoor air inlet 62 and the second air hose 52, and then continuously injects the indoor dirty air into the sealed cavity 2 through the fourth air hose 54, the controller 4 reads the carbon dioxide concentration data of the carbon dioxide sensor 21 installed in the sealed cavity 2, and the carbon dioxide concentration data at this time is the carbon dioxide concentration of the indoor dirty air.
When the controller 4 reads the carbon dioxide concentration data outdoors and indoors, the fresh air purifier can be informed to control the air volume entering the room, when the indoor carbon dioxide concentration is higher than that outdoors, the air volume of the fresh air purifier needs to be increased, and the higher the indoor carbon dioxide concentration is, the larger the air volume is; when the indoor carbon dioxide concentration is close to outdoors, the air supply quantity of the fresh air purifier can be reduced, when the air supply quantity is reduced, the energy consumed by the fresh air purifier is reduced, when the air conditioner is used indoors, the indoor air supply quantity is reduced, the loss of indoor cold air and indoor hot air can also be reduced, and therefore the purposes of energy conservation and emission reduction are achieved.
The above embodiments are only for further illustration of the technical solution of the present invention, and do not limit the protection scope of the present invention. It is obvious to the person skilled in the art that the invention is not restricted to the details of the above-described exemplary embodiments, but that it can be implemented in other specific forms. The scope of the invention is defined by the appended claims, rather than the description above, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims should not be construed as limiting the claim concerned.
Claims (9)
1. A carbon dioxide concentration detection device for a fresh air purifier is characterized by comprising air switching equipment, a plurality of ventilation hoses, a sealing cavity and a controller; the air switching equipment is connected with the sealed cavity through a ventilation hose to form an airflow channel, and a carbon dioxide sensor is arranged in the sealed cavity; the controller is electrically connected with the carbon dioxide sensor and the air switching device respectively.
2. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 1, wherein the air switching device is a solenoid valve, and the solenoid valve is a 2-position 3-vent valve for controlling air to enter the sealed cavity.
3. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 2, wherein two air inlets of the electromagnetic valve are respectively communicated with indoor air and outdoor air through air hoses.
4. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 3, further comprising a suction pump, wherein the suction pump is connected to the sealed chamber through a flexible air tube to form an air flow path, and the suction pump is electrically connected to the controller.
5. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 1, wherein the air switching device comprises two air pumps, namely an air pump A and an air pump B.
6. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 5, wherein the air pump A is in communication with the outdoor air through an air hose, and the air pump B is in communication with the indoor air through an air hose.
7. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 6, wherein the air pump A and the air pump B are electrically connected with the controller respectively.
8. The carbon dioxide concentration detection device for the fresh air purifier as recited in claim 5, wherein the two air pumps are both isolation pumps.
9. The device of claim 1, wherein the carbon dioxide sensor is an infrared carbon dioxide sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021786666.1U CN213454131U (en) | 2020-08-25 | 2020-08-25 | Carbon dioxide concentration detection device for fresh air purifier |
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| CN202021786666.1U CN213454131U (en) | 2020-08-25 | 2020-08-25 | Carbon dioxide concentration detection device for fresh air purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2819173C1 (en) * | 2023-05-02 | 2024-05-14 | Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский институт по проблемам гражданской обороны и чрезвычайных ситуаций МЧС России" (Федеральный центр науки и высоких технологий) (ФГБУ ВНИИ ГОЧС (ФЦ)) | Method for purification of air from carbon dioxide in premises adapted to protect public from emergencies, and device for its implementation |
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2020
- 2020-08-25 CN CN202021786666.1U patent/CN213454131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2819173C1 (en) * | 2023-05-02 | 2024-05-14 | Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский институт по проблемам гражданской обороны и чрезвычайных ситуаций МЧС России" (Федеральный центр науки и высоких технологий) (ФГБУ ВНИИ ГОЧС (ФЦ)) | Method for purification of air from carbon dioxide in premises adapted to protect public from emergencies, and device for its implementation |
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