TWI546114B - Air flow sensing device - Google Patents

Description

Gas flu test device

The invention relates to a gas influenza measuring device, in particular to a gas influenza measuring device capable of sensing a pre-filtered and filtered airflow through a filter with a single sensor.

With the advancement and development of science and technology, the problem of air pollution has become more and more serious. As a result, many households have air quieters to improve the air quality in their homes. In general, an air cleaner draws an external airflow into the housing by a fan to allow airflow through the screen so that the screen filters out dust from the airflow. After the air conditioner has been in operation for a period of time, the filter screen will be covered with dust, which will not effectively clean the air. At this point, the filter needs to be replaced to maintain the filtered air quality. For the conventional air conditioner, the user can only decide whether to replace the filter by visual inspection or recording the use time of the filter. However, if the user judges the error due to lack of experience or wants to save the cost of the filter and replace the filter too late, the quality of the filtered air will be greatly reduced.

One of the objects of the present invention is to provide an air influencing device capable of sensing a pre-filtered and filtered airflow through a filter with a single sensor to solve the above problems.

According to an embodiment, the gas influenza measuring device of the present invention comprises a housing, a screen, a sensor and a flow guiding member. The housing has an accommodating space, a first opening, a second opening and a third opening. The screen is placed in the housing. The sensor is disposed in the accommodating space. The flow guiding member is disposed in the housing, and the flow guiding member is switchable between a first state and a second state. When the flow guiding member is switched to the first state, the first opening, the accommodating space and the second opening form a first passage, such that a first airflow outside the housing flows through the sensor via the first passage. When the flow guiding member is switched to the second state, the first opening, the accommodating space and the third opening form a second passage, so that one of the through the filter The two air flows through the sensor through the second channel.

In summary, the present invention provides a flow guide that is switchable between a first state and a second state in a housing of the inflated influenza device. When the flow guide is switched to the first state, the first airflow before filtering outside the casing flows through the sensor, so that the sensor can sense the air quality of the first airflow before filtering as an adjustment fan. The basis of the speed. On the other hand, when the flow guide is switched to the second state, the filtered second airflow passing through the filter flows through the sensor, so that the sensor can sense the air quality of the filtered second airflow. As the basis for whether or not to replace the filter. Therefore, the present invention can sense the flow before and after filtering through the filter through a single sensor through the design of the flow guiding member and the air flow passage, which is not only easy to operate, but also does not increase excessive installation cost.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

1, 3, 5, 7‧ ‧ gas influenza measuring device

10‧‧‧shell

12‧‧‧ Filter

14‧‧‧Sensor

16, 36, 56, 76, 96‧‧ ‧ flow guides

18‧‧‧fan

100‧‧‧ accommodating space

102‧‧‧ first opening

104‧‧‧second opening

106‧‧‧ third opening

360‧‧‧guide

560‧‧‧First hollow cylinder

562‧‧‧Second hollow cylinder

564, 964‧‧ Fourth opening

566, 966‧‧‧ fifth opening

960‧‧‧ first board

962‧‧‧Second piece

A1‧‧‧First airflow

A2‧‧‧second airflow

P1‧‧‧ first channel

P2‧‧‧ second channel

1 is a schematic view of a gas influenza measuring device according to an embodiment of the present invention, in which a flow guiding member is switched to a first state.

Fig. 2 is a schematic view showing the flow guide in Fig. 1 switched to the second state.

Fig. 3 is a schematic view of a gas influenza measuring device according to another embodiment of the present invention, wherein the flow guiding member is switched to the first state.

Fig. 4 is a schematic view showing the flow guiding member in Fig. 3 being switched to the second state.

Fig. 5 is a schematic view of a gas influenza measuring device according to another embodiment of the present invention, in which the second hollow cylinder of the flow guiding member is switched to the first state.

Fig. 6 is a schematic view showing the second hollow cylinder of the flow guiding member in Fig. 5 being switched to the second state.

Fig. 7 is a schematic view of a gas influenza measuring device according to another embodiment of the present invention, wherein the flow guiding member is switched to the first state.

Fig. 8 is a view showing the flow guiding member in Fig. 7 being switched to the second state.

Figure 9 is a schematic view of a flow guiding member according to another embodiment of the present invention, wherein the second flow guiding member The slab is switched to the first state.

Fig. 10 is a schematic view showing the second sheet of the flow guiding member in Fig. 9 being switched to the second state.

Referring to FIG. 1 and FIG. 2, FIG. 1 is a schematic diagram of a gas influenza measuring device 1 according to an embodiment of the present invention, wherein the flow guiding member 16 is switched to the first state; FIG. 2 is the first FIG. The flow guide 16 is switched to a schematic view of the second state. As shown in FIG. 1 and FIG. 2 , the air flu measuring device 1 includes a housing 10 , a filter screen 12 , a sensor 14 , a flow guiding member 16 , and a fan 18 , wherein the filter screen 12 and the sensing unit The guide 14, the flow guide 16 and the fan 18 are all disposed in the housing 10. The gas flu measuring device 1 can be an air cleaner, a dehumidifier or other electronic device that can filter air. The housing 10 has an accommodating space 100 , a first opening 102 , a second opening 104 , and a third opening 106 . The sensor 14 is disposed in the accommodating space 100 .

In this embodiment, the flow guiding member 16 is a plate and rotatably disposed in the housing 10 such that the flow guiding member 16 is rotatably in the first state and the second embodiment shown in FIG. Switching between the second states shown. In practical applications, the flow guide 16 can be pivotally coupled to the housing 10 by a pivot (not shown).

As shown in FIG. 1 , when the flow guiding member 16 is switched to the first state, the flow guiding member 16 shields the third opening 106 and opens the second opening 104 such that the first opening 102 , the accommodating space 100 and the second opening 104 forms a first channel P1. At this time, one of the first airflows A1 outside the casing 10 can flow through the sensor 14 via the first passage P1. Thereby, the sensor 14 can sense the air quality of the first airflow A1 before filtering as a basis for adjusting the rotational speed of the fan 18. As shown in FIG. 2, when the flow guiding member 16 is switched to the second state, the flow guiding member 16 shields the second opening 104 and opens the third opening 106, so that the first opening 102, the accommodating space 100 and the third opening are opened. 106 forms a second channel P2. At this time, the second airflow A2, which is sucked into the casing 10 by the fan 18 and passed through one of the screens 12, can flow through the sensor 14 via the second passage P2. Thereby, the sensor 14 can sense the air quality of the second airflow A2 filtered by the filter 12 as a basis for whether or not to replace the filter 12.

In other words, when the user wants the gas-influenza measuring device 1 to operate normally to filter the air, The flow guide 16 can be switched to the first state shown in FIG. 1 , and when the user wants to determine whether the filter 12 should be replaced, the flow guide 16 can be switched to the second figure shown in FIG. 2 . status. Therefore, the present invention can sense the airflows A1 and A2 before and after filtering through the filter 12 by using the single sensor 14 through the design of the flow guiding member 16 and the airflow passages P1 and P2, which is not only easy to operate but does not increase. Excessive setup costs. It should be noted that the switching of the flow guiding member 16 can be automatically switched through the circuit matching mechanism design, or manually switched by the user through the mechanism design, depending on the actual application.

Referring to FIG. 3 and FIG. 4, FIG. 3 is a schematic diagram of a gas influenza measuring device 3 according to another embodiment of the present invention, wherein the flow guiding member 36 is switched to the first state; and FIG. 4 is the third FIG. The deflector 36 is switched to a schematic view of the second state. The main difference between the gas influenza measuring device 3 and the above-described gas detecting device 1 is that the flow guiding member 36 of the gas detecting device 3 is a cylinder as shown in Figs. 3 and 4. The flow guiding member 36 is rotatably disposed in the housing 10 such that the flow guiding member 36 is rotatably switched between the first state shown in FIG. 3 and the second state shown in FIG. In practical applications, the flow guide 36 can be pivotally coupled to the housing 10 by a pivot (not shown).

In this embodiment, the flow guide 36 has a guide groove 360. As shown in FIG. 3, when the flow guiding member 36 is switched to the first state, the flow guiding member 36 shields the third opening 106 and opens the second opening 104, so that the first opening 102, the accommodating space 100, and the guiding groove 360 A first passage P1 is formed with the second opening 104. At this time, the first airflow A1 outside the casing 10 can flow through the sensor 14 via the first passage P1. Thereby, the sensor 14 can sense the air quality of the first airflow A1 before filtering as a basis for adjusting the rotational speed of the fan 18. As shown in FIG. 4, when the flow guiding member 36 is switched to the second state, the flow guiding member 36 shields the second opening 104 and opens the third opening 106, so that the first opening 102, the accommodating space 100, and the guiding groove 360 A second passage P2 is formed with the third opening 106. At this time, the second airflow A2 that is sucked into the casing 10 by the fan 18 and passed through the screen 12 can flow through the sensor 14 via the second passage P2. Thereby, the sensor 14 can sense the air quality of the second airflow A2 filtered by the filter 12 as a basis for whether or not to replace the filter 12.

In other words, when the user wants to operate the gas-fluid measuring device 3 to filter the air, the deflector 36 can be switched to the first state shown in FIG. 3, and when the user wants to judge the filter 12 When the replacement is made, the flow guide 36 can be switched to the second state shown in Fig. 4. Therefore, the present invention can sense the airflows A1 and A2 before and after filtering through the filter 12 by using the single sensor 14 through the design of the flow guiding member 36 and the air flow passages P1 and P2, which is not only easy to operate but does not increase. Excessive setup costs. It should be noted that the switching of the flow guiding member 36 can be automatically switched through the circuit matching mechanism design, or manually switched by the user through the mechanism design, depending on the actual application.

Referring to FIG. 5 and FIG. 6 , FIG. 5 is a schematic diagram of a gas influenza measuring device 5 according to another embodiment of the present invention, wherein the second hollow cylinder 562 of the flow guiding member 56 is switched to the first state; The figure shows a schematic view of the second hollow cylinder 562 of the flow guiding member 56 in Fig. 5 being switched to the second state. The main difference between the gas fluometry device 5 and the gas fluometry device 1 described above is that the flow guiding member 56 of the gas flu measuring device 5 includes a first hollow cylinder 560 and a second hollow cylinder 562, as shown in FIG. Figure 6 shows. The first hollow cylinder 560 is fixed in the housing 10 and has a fourth opening 564, wherein the fourth opening 564 is in communication with the third opening 106. The second hollow cylinder 562 is rotatably disposed in the housing 10 such that the second hollow cylinder 562 is rotatably switched between the first state shown in FIG. 5 and the second state shown in FIG. . In a practical application, the second hollow cylinder 562 can be pivotally connected to the housing 10 by a pivot (not shown). In addition, the second hollow cylinder 562 has a fifth opening 566.

As shown in FIG. 5, when the second hollow cylinder 562 is switched to the first state, the third opening 106, the fourth opening 564, the fifth opening 566 and the second opening 104 are electrically connected, so that the first opening 102 is received. The space 100, the third opening 106, the fourth opening 564, the fifth opening 566 and the second opening 104 form a first passage P1. At this time, the first airflow A1 outside the casing 10 can flow through the sensor 14 via the first passage P1. Thereby, the sensor 14 can sense the air quality of the first airflow A1 before filtering as a basis for adjusting the rotational speed of the fan 18. As shown in FIG. 6, when the second hollow cylinder 562 is switched to the second state, the second hollow cylinder 562 shields the second opening 104, and the third opening 106, the fourth opening 564 and the fifth opening 566 are electrically connected, so that The first opening 102, the accommodating space 100, the third opening 106, the fourth opening 564, and the fifth opening 566 form a second passage P2. At this time, the second airflow A2 that is sucked into the casing 10 by the fan 18 and passes through the screen 12 can flow through the sensor through the second passage P2. 14. Thereby, the sensor 14 can sense the air quality of the second airflow A2 filtered by the filter 12 as a basis for whether or not to replace the filter 12.

In other words, when the user wants to make the air flu measuring device 5 operate normally to filter the air, the second hollow cylinder 562 of the flow guiding member 56 can be switched to the first state shown in FIG. 5, and when the user wants to judge When the filter 12 is to be replaced, the second hollow cylinder 562 of the flow guide 56 can be switched to the second state shown in FIG. Therefore, the present invention can sense the airflows A1 and A2 before and after filtering through the filter 12 by using the single sensor 14 through the design of the flow guiding member 56 and the air flow passages P1 and P2, which is not only easy to operate but does not increase. Excessive setup costs. It should be noted that the switching of the second hollow cylinder 562 of the flow guiding member 56 can be automatically switched by the circuit matching mechanism design, or manually switched by the user through the mechanism design, depending on the actual application.

Referring to FIG. 7 and FIG. 8 , FIG. 7 is a schematic diagram of a gas influenza measuring device 7 according to another embodiment of the present invention, wherein the flow guiding member 76 is switched to the first state; FIG. 8 is the seventh FIG. The flow guide 76 is switched to a schematic view of the second state. The main difference between the gas-fluid measuring device 7 and the above-described gas-fluid measuring device 1 is that the flow guiding member 76 of the gas-fluid measuring device 7 is a plate and is movably disposed in the casing 10 such that the flow guiding member 76 The switching between the first state shown in FIG. 7 and the second state shown in FIG. 8 is performed in a movable manner. In a practical application, the present invention can form a chute (not shown) in the casing 10, and the flow guiding member 76 is disposed in the chute so that the guiding member 76 is movably disposed in the casing 10. . In addition, the flow guiding member 76 can also be a flexible plate such that the flow guiding member 76 can be deformed along the internal structure of the housing 10 during the moving process.

As shown in FIG. 7 , when the flow guiding member 76 is switched to the first state, the flow guiding member 76 shields the third opening 106 such that the first opening 102 , the accommodating space 100 and the second opening 104 form the first channel P1 . . At this time, the first airflow A1 outside the casing 10 can flow through the sensor 14 via the first passage P1. Thereby, the sensor 14 can sense the air quality of the first airflow A1 before filtering as a basis for adjusting the rotational speed of the fan 18. As shown in FIG. 8 , when the flow guiding member 76 is switched to the second state, the flow guiding member 76 opens the third opening 106 , so that the first opening 102 , the accommodating space 100 and the third opening 106 form the second channel P2 . . At this time, since the second opening 104 is also in an open state, the present invention can The third opening 106 is made larger than the second opening 104 such that the resistance of the fan 18 to the housing 10 through the second airflow A2 of the screen 12 to the third opening 106 is less than the resistance to the second opening 104, thereby resulting in a third opening The wind pressure at 106 is greater than the wind pressure at the second opening 104. Thus, all or at least a majority of the second airflow A2 that is drawn into the housing 10 by the fan 18 and through the screen 12 can flow through the sensor 14 via the second passage P2. Thereby, the sensor 14 can sense the air quality of the second airflow A2 filtered by the filter 12 as a basis for whether or not to replace the filter 12.

In other words, when the user wants to operate the air flu test device 7 to filter the air, the flow guide 76 can be switched to the first state shown in FIG. 7, and when the user wants to judge whether the filter 12 should be replaced. At this time, the flow guide 76 can be switched to the second state shown in FIG. Therefore, the present invention can sense the airflow before and after filtering through the filter 12 by the single sensor 14 through the design of the flow guiding member 76, the air flow passages P1, P2, the second opening 104 and the third opening 106. A2, not only is it easy to operate, it does not add too much setup cost. It should be noted that the switching of the flow guiding member 76 can be automatically switched through the circuit matching mechanism design, or manually switched by the user through the mechanism design, depending on the actual application.

Referring to FIG. 9 and FIG. 10, FIG. 9 is a schematic view of a flow guiding member 96 according to another embodiment of the present invention, wherein the second plate 962 of the flow guiding member 96 is switched to the first state; FIG. The second plate 962 of the flow guide 96 in FIG. 9 is switched to the second state. The main difference between the flow guiding member 96 and the above-mentioned flow guiding member 16 is that the flow guiding member 96 includes a first plate piece 960 and a second plate piece 962, as shown in FIGS. 9 and 10. The flow guiding member 96 can replace the flow guiding member 76 of FIG. 7 in a vertical manner, and is disposed in the housing 10 corresponding to the third opening 106. The first plate 960 is fixed in the housing 10 and has a fourth portion. The opening 964, the fourth opening 964 is in communication with the third opening 106, and the second plate 962 is rotatably disposed in the housing 10 such that the second plate 962 is rotatably first in FIG. The state is switched between the state and the second state shown in FIG. In practical applications, the second plate 962 can be pivotally coupled to the housing 10 by a pivot (not shown). In addition, the second plate 962 has a fifth opening 966. It should be noted that the flow guiding member 76 in FIG. 7 can be moved integrally with respect to the third opening 106, and the flow guiding member 96 in FIG. 9 is The non-unitary body is movable relative to the third opening 106, but the first plate 960 of the flow guiding member 96 is stationary relative to the third opening 106, and the second plate 962 of the flow guiding member 96 is rotatable relative to the third opening 106. .

As shown in FIG. 7 and FIG. 9 , when the second plate 962 is switched to the first state, the second plate 962 shields the fourth opening 964 and the third opening 106 such that the first opening 102 and the receiving space The first opening P1 is formed by the 100 and the second opening 104. At this time, the first airflow A1 outside the casing 10 can flow through the sensor 14 via the first passage P1. Thereby, the sensor 14 can sense the air quality of the first airflow A1 before filtering as a basis for adjusting the rotational speed of the fan 18. As shown in Fig. 8 and Fig. 10 (the flow guiding member 96 shown in Fig. 10 is disposed at the third opening 106 shown in Fig. 8, instead of being disposed in the second state as shown in Fig. 8. When the second plate 962 is switched to the second state, the third opening 106, the fourth opening 964 and the fifth opening 966 are turned on, so that the first opening 102, the accommodating space 100, and the third The opening 106, the fourth opening 964 and the fifth opening 966 form a second passage P2. At this time, since the second opening 104 is also in an open state, the present invention can make the third opening 106, the fourth opening 964 and the fifth opening 966 larger than the second opening 104, so that the fan 18 is sucked into the casing 10 and passed through the sieve. The resistance of the second airflow A2 flowing to the third opening 106, the fourth opening 964 and the fifth opening 966 is less than the resistance flowing to the second opening 104, thus resulting in the third opening 106, the fourth opening 964 and the fifth opening 966. The wind pressure is greater than the wind pressure at the second opening 104. Therefore, the second airflow A2 that is drawn into the casing 10 by the fan 18 and passes through the screen 12 can flow through the sensor 14 via the second passage P2. Thereby, the sensor 14 can sense the air quality of the second airflow A2 filtered by the filter 12 as a basis for whether or not to replace the filter 12.

In other words, when the user wants to operate the air flu measuring device to filter the air, the second plate 962 of the flow guiding member 96 can be switched to the first state shown in FIG. 9 when the user wants to judge the filter. When the net 12 is to be replaced, the second plate 962 of the flow guide 96 can be switched to the second state shown in FIG. Therefore, the present invention can sense the filter screen 12 by using a single sensor 14 through the design of the flow guiding member 96, the air flow passages P1, P2, the second opening 104, the third opening 106, the fourth opening 964 and the fifth opening 966. The airflows A1 and A2 before and after the filtration are not only simple to operate, but also do not increase excessive installation costs. It should be noted that the switching of the second plate 962 of the flow guiding member 96 can be The circuit is automatically switched by the design of the mechanism, or manually switched by the user through the mechanism design, depending on the actual application.

In summary, the present invention provides a flow guide that is switchable between a first state and a second state in a housing of the inflated influenza device. When the flow guide is switched to the first state, the first airflow before filtering outside the casing flows through the sensor, so that the sensor can sense the air quality of the first airflow before filtering as an adjustment fan. The basis of the speed. On the other hand, when the flow guide is switched to the second state, the filtered second airflow passing through the filter flows through the sensor, so that the sensor can sense the air quality of the filtered second airflow. As the basis for whether or not to replace the filter. Therefore, the present invention can sense the flow before and after filtering through the filter through a single sensor through the design of the flow guiding member and the air flow passage, which is not only easy to operate, but also does not increase excessive installation cost.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧Inflatable influenza measuring device

10‧‧‧shell

12‧‧‧ Filter

14‧‧‧Sensor

16‧‧‧ deflector

18‧‧‧fan

100‧‧‧ accommodating space

102‧‧‧ first opening

104‧‧‧second opening

106‧‧‧ third opening

A1‧‧‧First airflow

A2‧‧‧second airflow

P1‧‧‧ first channel

P2‧‧‧ second channel

Claims (2)

An air flu measuring device comprises: a housing having an accommodating space, a first opening, a second opening and a third opening; a filter screen disposed in the housing; a sensor, setting In the accommodating space; and a flow guiding member comprising a first hollow cylinder and a second hollow cylinder, the first hollow cylinder is fixed in the housing and has a fourth opening, the fourth opening a third opening communicating, the second hollow cylinder being rotatably disposed in the housing, such that the second hollow cylinder is rotatably switched between a first state and a second state, the second hollow The cylinder has a fifth opening; wherein, when the second hollow cylinder is switched to the first state, the third opening, the fourth opening, the fifth opening are electrically connected to the second opening, the first opening, The accommodating space, the third opening, the fourth opening, the fifth opening and the second opening form a first passage, such that a first airflow outside the housing flows through the sensor via the first passage When the second hollow cylinder is switched to the first In the state, the second hollow cylinder shields the second opening, and the third opening and the fourth opening are electrically connected to the fifth opening, the first opening, the accommodating space, the third opening, the fourth opening Forming a second passage with the fifth opening such that a second airflow through the screen flows through the sensor via the second passage. An air flu measuring device comprises: a housing having an accommodating space, a first opening, a second opening and a third opening; a filter screen disposed in the housing; a sensor, setting In the accommodating space; and a flow guiding member comprising a first plate and a second plate, the first plate is fixed in the casing and has a fourth opening, the fourth opening and the The third opening is connected, the second plate The second plate is rotatably disposed between a first state and a second state, the second plate having a fifth opening, the second plate The third opening, the fourth opening and the fifth opening are both larger than the second opening; wherein, when the second plate is switched to the first state, the second plate shields the fourth opening from the third Opening, the first opening, the accommodating space and the second opening form a first passage, such that a first airflow outside the housing flows through the sensor via the first passage; when the second plate is When the second state is switched, the third opening and the fourth opening are electrically connected to the fifth opening, and the first opening, the accommodating space, the third opening, the fourth opening and the fifth opening form a The second passage is such that a second airflow passing through one of the screens flows through the sensor via the second passage.