JP6677062B2 - Range hood equipment - Google Patents

Description

  The present invention relates to a range hood device.

  Generally, range hood fans use filters to separate dirt from contaminated air. If the filter accumulates dirt and becomes clogged, the air volume decreases and the ability to capture contaminated air decreases. Therefore, frequent maintenance is required.

  In order to solve such a problem, Patent Literature 1 below discloses a range hood fan including a cyclone separator. The cyclone separator separates and collects dirt from the contaminated air by centrifugal force, so there is no need to use a filter. Maintain the ability to gather.

JP-A-10-26385

  In a range hood fan equipped with a cyclone separator, the air volume is reduced as compared with a case without a cyclone separator due to the pressure loss of the cyclone separator. As a result, the range in which contaminated air can be captured is narrowed. As a result, contaminated air that cannot be completely captured spreads to the surrounding space, and there is a possibility that surrounding devices and the like become dirty.

  The present invention has been made in order to solve the above-described problems, and is a range hood device that can reduce maintenance work while maintaining collection performance for a long period of time and can suppress spread of contaminated air to the surroundings. The purpose is to provide.

The range hood device according to the present invention includes a blower, an inlet for taking in air from a space on the upstream side of the blower, a cyclone separator through which air flows in from the inlet, and a horizontal distance between the inlet and the inlet. An air outlet that blows out an airflow having a horizontal velocity component approaching the air into the space, an airflow path that sends a part of the airflow downstream of the blower upstream of the air outlet, and the rest of the airflow downstream of the blower outside the room And a discharge unit for discharging .

  ADVANTAGE OF THE INVENTION According to the range hood apparatus of this invention, while maintaining collection performance for a long period of time, maintenance can be reduced, and the provision of the air outlet makes it possible to reliably suppress the spread of contaminated air to the surroundings. Becomes

It is a typical sectional view showing the range hood device of Embodiment 1. FIG. 3 is a schematic perspective view of a cyclone separator provided in the range hood device of the first embodiment. It is a typical sectional view showing the range hood device of Embodiment 2. It is a typical sectional view showing the range hood device of Embodiment 3.

  Hereinafter, embodiments will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals, and redundant description will be simplified or omitted. The present disclosure may include any combination of configurations that can be combined among the configurations described in the following embodiments.

Embodiment 1 FIG.
FIG. 1 is a schematic sectional view showing a range hood device 1A according to the first embodiment. FIG. 2 is a schematic perspective view of the cyclone separator 10 provided in the range hood device 1A according to the first embodiment.

  As shown in FIG. 1, the range hood device 1A according to the first embodiment includes a cyclone separator 10, an inlet 11, an air blower 20, an air outlet 30, an air passage 31, a control device 50, and a dirt sensor 51. The inflow port 11 is on the upstream side of the blower 20. The inflow port 11 takes in air (hereinafter, referred to as “contaminated air”) mixed with contaminants generated during cooking of food from the space 90. The blower 20 generates a wind for sucking contaminated air into the inflow port 11, that is, an airflow.

  The space 90 is a space where contaminated air can exist. The space 90 may be a space below the main body 40 of the range hood device 1A. The space 90 may be a space above a cooking utensil (not shown). The cooking appliance may be, for example, at least one of a gas stove, an electric stove, a charcoal stove, and an induction heating (IH) cooker. The soiling substance is, for example, fine particles made of oil, tar, charred food, charcoal, ash and the like.

  The contaminated air introduced from the inlet 11 flows into the cyclone separator 10. The flow path in the cyclone separator 10 is located downstream of the inlet 11 and upstream of the blower 20. The cyclone separator 10 separates contaminated substances from contaminated air by centrifugal force by swirling the contaminated air inside. The separated contaminants are temporarily stored in the cyclone separator 10.

  As shown in FIG. 2, the cyclone separator 10 includes an inlet pipe 12, a swirl chamber 13, a first opening 14, a first dust collector 15, and a discharge pipe 16. The inflow pipe 12 connects between the inflow port 11 and the swirl chamber 13. The contaminated air flows into the swirling chamber 13 from the inflow port 11 through the inflow pipe 12. The contaminated air swirls in the swirl chamber 13. In the present embodiment, the length of the inflow pipe 12 is short, and the inflow port 11 is formed integrally with the cyclone separator 10. Not limited to such a configuration, the position of the inlet 11 and the position of the cyclone separator 10 may be separated. A plurality of inlets 11 may be present.

  The inflow pipe 12 is connected to an upper part of the swirl chamber 13. The inflow pipe 12 extends from a cylindrical side wall of the swirl chamber 13 in a tangential direction of the side wall. The swirling chamber 13 is arranged so that the center axis thereof is oriented in the up-down direction. The swirling chamber 13 includes a cylindrical portion having a cylindrical shape, and a conical portion coaxially connected below the cylindrical portion. The conical portion has a hollow truncated conical shape in which a top portion and a portion near the vertex are truncated. The diameter of the cone decreases downward.

  The contaminated air swirls along the side wall of the swirl chamber 13 by being introduced from the inflow pipe 12 in the tangential direction of the side wall of the swirl chamber 13. The contaminants are separated from the contaminated air by the centrifugal force when turning. A first opening 14 is formed at the lower end of the swirling chamber 13, that is, at the lower end of the conical portion. The first dust collector 15 communicates with the inside of the swirl chamber 13 via the first opening 14. The dirt substance separated in the swirling chamber 13 passes through the first opening 14 and collects in the first dust collecting unit 15 and is temporarily stored.

  In the following description, air from which contaminated substances have been separated from contaminated air by the cyclone separator 10 is referred to as “clean air”. The clean air is discharged out of the cyclone separator 10 through the discharge pipe 16. The discharge pipe 16 has a cylindrical shape. The discharge pipe 16 projects from the upper surface of the swirl chamber 13 into the swirl chamber 13.

  As shown in FIG. 1, a blower 20 is disposed downstream of the discharge pipe 16 of the cyclone separator 10. An exhaust air passage 21 communicates with the downstream side of the blower 20. The downstream side of the exhaust air passage 21 may be connected to a duct communicating outside the space 90, for example, a duct communicating outside the room. The exhaust air passage 21 is an example of a discharge unit.

  The outlet 30 blows the airflow 91 into the space 90. A plurality of outlets 30 may be present. When the airflow 91 is blown out from the outlet 30 into the space 90, an induced airflow 92 is generated in the space 90. The induced airflow 92 has an effect of attracting the contaminated air to the vicinity of the inlet 11. A vector V in FIG. 1 indicates a velocity vector of the airflow 91 blown out from the outlet 30. Vector V1 indicates the horizontal component of vector V. Vector V2 indicates the vertical component of vector V.

  The airflow 91 blown out from the outlet 30 has a horizontal velocity component V <b> 1 such that the horizontal distance from the inlet 11 approaches the inlet 11. Since the airflow 91 has the velocity component V1, the induced airflow 92 flowing in the direction approaching the inlet 11 can be efficiently generated.

  In the present embodiment, the provision of the cyclone separator 10 makes it possible to separate contaminants without using a filter. Therefore, since the air volume does not decrease due to the clogging of the filter, the collection capacity can be maintained for a long time without frequent maintenance.

  In the present embodiment, due to the pressure loss of the cyclone separator 10, the amount of air sucked from the inflow port 11 is reduced as compared with the configuration without the cyclone separator 10. Generally, when the amount of air sucked from the inlet 11 is low, the range in which contaminated air can be sucked becomes narrow. If the range in which the contaminated air can be sucked is narrow, the contaminated air diffuses to the surroundings, and there is a possibility that surrounding devices, facilities, and the like become dirty. On the other hand, in the present embodiment, the contaminated air can be efficiently induced toward the inflow port 11 by the induced airflow 92. Therefore, the diffusion of the contaminated air to the surroundings can be reliably suppressed, and the surrounding devices and equipment can be reliably prevented from being contaminated.

  The air passage 31 is a passage that sends a part of the airflow of the clean air downstream of the blower 20 to an upstream of the outlet 30. A part of the airflow of the clean air generated by the blower 20 can be blown out from the outlet 30 as an airflow 91. As a result, the following effects can be obtained. Since another air blower for blowing out the airflow 91 from the air outlet 30 is not required, the structure can be simplified and the cost can be reduced. Since there is no need to provide a filter for preventing infiltration of contaminants from the suction port that takes in air into the another blower, there is no need to perform maintenance on the filter, and the maintenance work can be further reduced.

  According to the present embodiment, only a part of the air flow of the clean air downstream of the blower 20 is sent to the outlet 30 through the air passage 31, and the rest of the air flow of the clean air downstream of the blower 20 is exhaust air It is discharged to the outside through the passage 21. As a result, the following effects can be obtained. By exhausting the clean air to the outside, the room can be ventilated.

  The outlet 30 is located below the main body 40 of the range hood device 1A. The outlet 30 is located above the space 90. The airflow 91 blown out from the outlet 30 has a velocity component V2 directed vertically downward. According to these configurations, the induced airflow 92 flowing in the direction approaching the inflow port 11 can be generated more efficiently in the space 90.

  In the present embodiment, the cyclone separator 10 and the inlet 11 are located at positions near the outer edge of one end of the main body 40 of the range hood device 1A. The outlet 30 is located at a position near the outer edge of the other end of the main body 40 of the range hood device 1A. These positional relationships are not limited to the above configuration. For example, the inlet 11 may be arranged at the center of the main body 40 of the range hood device 1A, and the plurality of outlets 30 may be arranged at the peripheral edge of the main body 40 of the range hood device 1A.

  The dirt sensor 51 is an example of a unit that detects dirt of contaminated air. The dirt sensor 51 may be, for example, any one of a dust sensor, a suspended particle sensor, and an aerosol sensor. The dirt sensor 51 may be a sensor using the principle of light scattering. The dirt sensor 51 may be installed at a position facing the space 90. In the illustrated configuration, a dirt sensor 51 is installed on the main body 40 of the range hood device 1A. Not limited to such a configuration, for example, the dirt sensor 51 may be installed in the cyclone separator 10. The dirt sensor 51 may detect at least one of the amount of dirt contained in the contaminated air, the number of particles per volume, and the particle diameter.

  The control device 50 controls the operation of the blower 20. The controller 50 determines that the air contamination detected by the dirt sensor 51 is larger than the reference, and that the air dirt detected by the dirt sensor 51 is smaller than the reference. The air volume may be increased. By doing so, the following effects can be obtained. When the amount of contaminants is small, that is, when the collecting capacity required for the cyclone separator 10 is relatively low, the power consumption can be reduced by lowering the input to the blower 20 and the air volume can be reduced. Thus, it is possible to reduce the sound generated by the airflow swirling in the swirling chamber 13. The usability can be improved by automatically controlling the air volume of the blower 20 to an appropriate air volume.

  The first dust collector 15 may be detachable from other parts of the cyclone separator 10. Since the first dust collecting unit 15 is detachable, the dirt substances accumulated in the first dust collecting unit 15 can be easily discarded, thereby improving the maintainability and the usability. It is desirable that a transparent member be used for at least a part of the first dust collecting unit 15 so that the inside can be visually checked. This is because the user can easily confirm the amount of the dirt substance accumulated in the first dust collection unit 15. The cyclone separator 10 may be detachable from the main body 40 of the range hood device 1A.

Embodiment 2 FIG.
Next, a second embodiment will be described with reference to FIG. 3, but the description will focus on differences from the first embodiment described above, and description of the same or corresponding parts will be simplified or omitted. FIG. 3 is a schematic sectional view showing a range hood device 1B according to the second embodiment.

  As shown in FIG. 3, the range hood device 1B according to the second embodiment includes a valve 22 and a bypass passage 23. The bypass passage 23 is a passage that connects the inlet 11 and the blower 20 without passing through the cyclone separator 10. The valve 22 switches between a state in which air passes through the bypass passage 23 and a state in which air does not pass through the bypass passage 23. FIG. 3 shows a state in which air passes through the bypass passage 23. The valve 22 includes a valve body 22a and a rotation shaft 22b. The valve 22 may include an actuator (not shown) that rotates the valve body 22a about the rotation shaft 22b. In the state shown in FIG. 3, the valve element 22a is at a position that closes the discharge pipe 16 of the cyclone separator 10. By rotating the valve body 22a 180 ° counterclockwise from the state of FIG. 3, air is not passed through the bypass passage 23. In a state where air does not pass through the bypass passage 23, the valve body 22a is in a position where the bypass passage 23 is closed and the discharge pipe 16 of the cyclone separator 10 is not closed.

  For example, as in the case of boiling hot water, the air in the space 90 may hardly contain dirt. In such a case, it can be said that there is no need to pass the air taken in from the inlet 11 through the cyclone separator 10. According to the present embodiment, when there is no need to pass the air taken in from the inflow port 11 to the cyclone separator 10, the valve 22 is switched to a state in which the air passes through the bypass passage 23, whereby the cyclone separator The air can be sent to the exhaust air passage 21 without passing through the air passage 10. In this case, since the pressure loss of the bypass passage 23 is smaller than that of the cyclone separator 10, the input to the blower 20 can be reduced, and the power consumption can be suppressed. In addition, since the sound generated by the airflow swirling in the swirling chamber 13 is not generated, the sound can be suppressed and the usability can be improved.

  The control device 50 may control switching of the valve 22. The control device 50 may control the switching of the valve 22 according to the dirt of the air detected by the dirt sensor 51. When the dirt of the air detected by the dirt sensor 51 is smaller than the reference, air passes through the bypass passage 23, and when the dirt of the air detected by the dirt sensor 51 is larger than the reference, The control device 50 may control the switching of the valve 22 such that the air passes through the cyclone separator 10 without passing through the bypass passage 23. By automatically controlling the valve 22 to an appropriate state, usability can be improved.

  The controller 50 is not limited to the configuration in which the switching of the valve 22 is controlled, and the user may operate the switching of the valve 22.

  Range hood device 1B of the second embodiment includes a second blower 32 instead of air passage 31 of the first embodiment. The second blower 32 generates an airflow 93 blown out from the outlet 30. In the present embodiment, since the airflow 93 from the outlet 30 is generated by the second blower 32 different from the blower 20, the position of the outlet 30 and the amount of blown air can be freely designed.

  A vector V3 in FIG. 3 indicates a velocity vector of the airflow 93 blown out from the outlet 30. Vector V4 indicates the horizontal component of vector V3. Vector V5 indicates the vertical component of vector V3.

  The airflow 93 blown out from the outlet 30 has a horizontal velocity component V3 such that the horizontal distance from the inlet 11 approaches the inlet 11. Since the airflow 93 has the velocity component V3, the induced airflow 92 flowing in the direction approaching the inflow port 11 can be efficiently generated.

  The outlet 30 is located at a position different from the main body 40 of the range hood device 1B. The outlet 30 is located below the space 90. The airflow 93 blown out from the outlet 30 has a velocity component V5 directed vertically upward. According to these configurations, the following effects can be obtained. The induced airflow 92 flowing in the direction approaching the inflow port 11 can be more efficiently generated in the space 90. Contaminated air below the space 90 is more likely to be guided by the inlet 11 at the upper part of the space 90, and a wider range of contaminated air can be sucked from the inlet 11.

Embodiment 3 FIG.
Next, a third embodiment will be described with reference to FIG. 4, but the description will focus on the differences from the first embodiment, and the description of the same or corresponding parts will be simplified or omitted. FIG. 4 is a schematic sectional view showing a range hood device 1C according to the third embodiment.

  As shown in FIG. 4, the range hood device 1 </ b> C according to the third embodiment partially differs from the first embodiment in the configuration of the cyclone separator 10. The cyclone separator 10 according to the third embodiment further includes a second opening 17 and a second dust collector 18 in addition to the configuration of the cyclone separator 10 according to the first embodiment. The second opening 17 is formed on the side wall of the cylindrical portion of the swirl chamber 13. The second opening 17 may be formed, for example, from a position near the lower end of the cylindrical portion to the upper end of the conical portion. The second opening 17 is formed at a position higher than the first opening 14, that is, on the upstream side. The second dust collecting unit 18 communicates with the inside of the swirl chamber 13 via the second opening 17.

  According to the present embodiment, the following effects can be obtained. A relatively bulky contaminant is separated at the cylindrical portion of the swirl chamber 13 and collected by the second dust collecting portion 18 through the second opening 17. After that, the relatively small-volume contaminants are separated at the conical portion of the swirling chamber 13 and collected in the first dust collecting portion 15 through the first opening 14. Therefore, dirt substances having different sizes can be collected more efficiently, and the collection performance can be further improved.

  The second dust collector 18 may be detachable from other parts of the cyclone separator 10. The first dust collecting unit 15 and the second dust collecting unit 18 may be individually detachable from other parts of the cyclone separator 10. The first dust collecting unit 15 and the second dust collecting unit 18 may be integrally detachable from the main body 40 of the cyclone separator 10.

1A, 1B, 1C Range hood device, 10 cyclone separator, 11 inflow port, 12 inflow pipe, 13 swirl chamber, 14 first opening, 15 first dust collecting section, 16 discharge pipe, 17 second opening, 18 2nd dust collecting section, 20 blower, 21 exhaust air path, 22 valve, 22a valve element, 22b rotating shaft, 23 bypass flow path, 30 outlet, 31 air path, 32 second blower, 40 body, 50 control device , 51 dirt sensor, 90 space, 91 air flow, 92 induced air flow, 93 air flow

Claims (8)

A blower,
An inlet for taking in air from a space on the upstream side of the blower,
A cyclone separator through which the air flowing from the inflow port passes;
An outlet for blowing an airflow having a horizontal velocity component such that a horizontal distance between the inlet and the inlet approaches the inlet, into the space;
An air passage that sends a portion of the airflow downstream of the blower upstream of the outlet,
A discharge unit that discharges the remainder of the airflow downstream of the blower to the outside of the room,
Range hood device provided with.   The range hood device according to claim 1, further comprising a second blower that generates the airflow blown out from the blowout port. The range hood device according to claim 1 or 2 , wherein the airflow blown out from the blowout port has a velocity component directed vertically downward. 3. The range hood device according to claim 1, wherein the airflow blown out from the blowout port has a velocity component directed vertically upward. 4. A bypass passage, which is a passage through which air flows from the inflow port to the blower without passing through the cyclone separator,
A valve for switching between a state in which air passes through the bypass flow path and a state in which air does not pass through the bypass flow path,
The range hood device according to any one of claims 1 to 4 , further comprising: Means for detecting air contamination;
Means for controlling the valve so that air is passed through the bypass flow path when the dirt is less than a reference, and otherwise, air is not passed through the bypass flow path;
The range hood device according to claim 5 , comprising: The cyclone separator,
A swirl chamber in which air swirls,
A first opening formed at a lower end of the turning chamber;
A first dust collector communicating with the interior of the swirl chamber through the first opening;
A second opening formed in a side wall of the swirling chamber;
A second dust collector communicating with the inside of the swirl chamber through the second opening;
The range hood device according to any one of claims 1 to 6 , further comprising: Means for detecting air contamination;
Means for increasing the air volume of the blower when the amount of dirt is large compared to when the amount of dirt is small;
The range hood device according to any one of claims 1 to 7 , further comprising:

Images