Air blowing device

Abstract

To obtain an air blowing device that can be installed in a space saving manner, and has an air cleaning function.SOLUTION: An indoor machine 1 according to the present disclosure comprises: a main body part 2 housing a fan 3; a decorative panel 6 in which a suction port 7 for taking air into an air passage inside the main body part 2 is formed, and facing an object space; and an air cleaning unit 10 for cleaning the air by discharging electricity. The air cleaning unit 10 is arranged between the fan 3 and the decorative panel 6, and housed inside the main body part 2 and the decorative panel 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a blower device. [Background technology]

[0002] Patent Document 1 discloses an air conditioner as an example of a blower device having an air purification function. The air conditioner described in Patent Document 1 relates to a product configured so that a discharge type air purification unit can be additionally installed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2015 / 056465 Summary of the Invention [Problem to be solved by the invention]

[0004] The air conditioner described in Patent Document 1 is configured so that an air purifying unit can be additionally installed between the main body that houses the fan and the decorative panel that faces the target space, which is the room. In the air conditioner described in Patent Document 1, when an air purifying unit is additionally installed, the main body is raised. Therefore, when an air purifying unit is additionally installed, the height dimension of the space required to install the air conditioner increases.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a blower device having an air cleaning function that can be installed in a small space. [Means for solving the problem]

[0006] The air blower according to the present disclosure includes a main body that houses a fan, a decorative panel that faces a target space and has an inlet for taking air into an air passage inside the main body, and an air purifying unit that purifies the air by discharging electricity. The air purifying unit is disposed between the fan and the decorative panel and is housed inside the main body and the decorative panel. Effect of the Invention

[0007] According to the present disclosure, it is possible to obtain a space-saving air blower having an air cleaning function. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a configuration of an indoor unit according to a first embodiment. [Diagram 2] FIG. 4 is a diagram showing an air flow in the indoor unit of the first embodiment. [Diagram 3] FIG. 1 is a diagram showing an example of a configuration of an air purification unit according to a first embodiment. [Figure 4] FIG. 4 is a diagram showing another example of the configuration of the air purification unit of the first embodiment. [Diagram 5] FIG. 4 is a diagram showing a modified example of the indoor unit 1 of the first embodiment. [Figure 6] FIG. 4 is a diagram showing a modified example of the indoor unit 1 of the first embodiment. [Figure 7] FIG. 2 is a schematic diagram showing the configuration of a ventilation fan according to the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments will be described with reference to the drawings. The same reference numerals in each drawing indicate the same or corresponding parts. In this disclosure, duplicated descriptions are appropriately simplified or omitted. Note that this disclosure may include various modifications and combinations of the configurations disclosed in the following embodiments, without departing from the spirit of the disclosure.

[0010] Embodiment 1 Fig. 1 is a schematic diagram showing the configuration of an indoor unit 1 according to the first embodiment. Fig. 2 is a diagram showing the flow of air in the indoor unit 1 according to the first embodiment. Figs. 1 and 2 show the indoor unit 1 of a four-way cassette type packaged air conditioner as an example of a blower according to the present disclosure. The arrows in Fig. 2 indicate the direction of air flow when the indoor unit 1 is in operation.

[0011] The indoor unit 1 is installed, for example, on a ceiling 100. The indoor unit 1 includes a main body 2 that is attached to the ceiling 100. The main body 2 houses a fan 3. An air passage is formed within the main body 2. The fan 3 generates an airflow within this air passage.

[0012] In addition to the fan 3, the main body 2 also accommodates, for example, a heat exchanger 4 and a bellmouth 5. The heat exchanger 4 is placed in an air passage inside the main body 2, and heats or cools the air. The bellmouth 5 is a component that smoothly guides air to the inlet of the fan 3, and is provided upstream of the fan 3. The main body 2, which houses various components and devices, is composed of a fan case that accommodates the fan, the housing of the indoor unit 1, etc.

[0013] The indoor unit 1 is equipped with a decorative panel 6 facing a target space such as a room. The decorative panel 6 is formed with an intake port 7 for taking in air into an air passage inside the main body 2. The decorative panel 6 is composed of an intake grille having the intake port 7, a frame part that holds the intake grille, and the like. The decorative panel 6 is attached to the main body 2. In the example shown in Figs. 1 and 2, the decorative panel 6 is exposed from the ceiling 100.

[0014] The decorative panel 6 is formed with air outlets 8 for blowing air into a target space. The indoor unit 1 of the four-way cassette type packaged air conditioner is provided with four air outlets 8. As shown in FIG. 2, the fan 3 generates an airflow that flows from the intake port 7 to the air outlets 8.

[0015] The indoor unit 1 according to this embodiment includes an air purifying unit 10 that purifies the air by discharging electricity. Various devices that purify the air by discharging electricity correspond to the air purifying unit 10. For example, the air purifying unit 10 may be an electrostatic precipitator device that charges and collects dust, or may be a device that purifies the air by generating ozone or ions that have a sterilizing effect.

[0016] The air purifying unit 10 is disposed in an air passage leading from the intake port 7 to the exhaust port 8. As an example, the air purifying unit 10 is configured so that it can be installed in the air passage inside an air blower, which is an existing product. With such a configuration, there is no need to change the design of the existing decorative panel 6. Furthermore, when the air purifying unit 10 that uses discharge is provided in the air passage, the pressure loss can be reduced compared to when a nonwoven fabric filter that physically captures dust is provided. Therefore, even if the air purifying unit 10 is added to the air passage of an existing product, the reduction in air volume can be kept to a minimum, and the air blowing capacity of the product is unlikely to be impaired.

[0017] As shown in Figures 1 and 2, the air purification unit 10 is disposed between the fan 3 and the decorative panel 6. In the example of Figures 1 and 2, the air purification unit 10 is disposed between the bellmouth 5 and the decorative panel 6. In the example of Figures 1 and 2, the air purification unit 10 is located above the surface of the decorative panel 6.

[0018] In this embodiment, the air purification unit 10 is housed inside the main body 2 and the decorative panel 6. That is, the air purification unit 10 is built into the indoor unit 1. In this manner, if the air purification unit 10 is built into the indoor unit 1, the air purification unit 10 can be provided without raising the main body 2. With this embodiment, it is possible to avoid increasing the size of the indoor unit 1, and it is possible to keep the height dimension of the space required to install the indoor unit 1 small. According to this embodiment, it is possible to obtain the indoor unit 1, which is a blower with an air purification function and can be installed in a small space.

[0019] As described above, the air purifying unit 10 can be an electrostatic precipitator device that charges and collects dust. The air purifying unit 10 is an electrostatic precipitator device having an electrode portion that performs high voltage discharge of, for example, 5 kV or more. The air purifying unit 10 may also be configured to perform discharge at a voltage of, for example, 3 kV or more. This is because the lower limit of the drooping characteristic of the power supply specifications is 3 kV.

[0020] In a cross section of the air passage in the flow direction at the position of the electrode part of the air purification unit 10 using the electrostatic precipitator, the ratio of the area of ​​the region where the electrode part is located to the area of ​​the air passage may be 50% or more and less than 100%. By configuring the electrode part to cover a wide range of the air passage, more air can be purified. For example, as shown in FIG. 1, it is preferable to make the width U of the part where the electrode part is located sufficiently large compared to the width P of the air passage. In this embodiment, "width" means any one of the front-rear dimension, left-right dimension, dimension perpendicular to the flow in the air passage, or diameter.

[0021] The electrode section of air purification unit 10 using the electrostatic precipitator method may be configured to cover the area of ​​the opening of bellmouth 5 when viewed from the perspective of the flow direction of the air passage. For example, the width U of the portion where the electrode section is arranged may be greater than the width Bi of the inlet side opening of bellmouth 5. Alternatively, the width U of the portion where the electrode section is arranged may be greater than the width Bo of the outlet side opening of bellmouth 5. By configuring the electrode section of air purification unit 10 to cover the opening of bellmouth 5, a large amount of air can be purified.

[0022] The width Bo of the outlet side opening of the bellmouth 5 is smaller than the width Bi of the inlet side opening of the bellmouth 5. If the width U of the portion where the electrode parts are arranged is made larger than the width Bo of the outlet side opening of the bellmouth 5, a sufficiently large amount of air can be purified. If the width U of the portion where the electrode parts are arranged is made larger than the width Bi of the inlet side opening of the bellmouth 5, even more air can be purified.

[0023] The electrode part of the air purifying unit 10 using the electrostatic precipitator may be configured to be included in the area of ​​the suction port 7 from the viewpoint of the flow direction of the air passage. If the electrode part is arranged wider than necessary relative to the suction port 7, a wasted area through which air does not pass will be created. Therefore, by arranging the electrode part in an area smaller than the suction port 7, it is possible to eliminate the wasted area and to reduce the size of the indoor unit 1. In addition, by arranging the electrode part in an area smaller than the suction port 7, it is possible to reduce the size of the air purifying unit 10 and facilitate the maintenance of the air purifying unit 10. For example, it is preferable to make the width U of the part where the electrode part is arranged smaller than the width I of the suction port 7.

[0024] FIG. 3 is a diagram showing an example of the configuration of the air purifying unit 10 of the first embodiment. FIG. 4 is a diagram showing another example of the configuration of the air purifying unit 10 of the first embodiment. In FIG. 3 and FIG. 4, the part where the electrode part of the air purifying unit 10 of the electric dust collection type is arranged is indicated by a broken line. As shown in FIG. 3, the electrode part of the air purifying unit 10 may be configured as a single module. Also, as shown in FIG. 4, the electrode part of the air purifying unit 10 may be composed of a plurality of modules. By dividing the electrode part into a plurality of modules, the size of each module is reduced, and productivity and assembly are improved. In addition, it is possible to correspond to various existing products by changing the number of modules mounted while using the same small module. In addition, it is also possible to improve the air purification ability by arranging the modules in a stacked manner, and to correspond to various air path designs by changing the orientation of the modules.

[0025] When a user performs maintenance on the air purification unit 10, the user opens or removes the decorative panel 6. At this time, in order to facilitate maintenance, it is preferable that the user is close to the air purification unit 10 when the decorative panel 6 is open or removed. Therefore, it is preferable to install the air purification unit 10 in the vicinity of the decorative panel 6. More specifically, it is preferable to place the air purification unit 10 in a position closer to the decorative panel 6 than the fan 3 and the bell mouth 5.

[0026] Figures 5 and 6 are diagrams showing modified examples of the indoor unit 1 of embodiment 1. Note that in Figures 5 and 6, some of the components shown in Figures 1 and 2 are omitted, and some of the components are shown with different shapes and sizes to clarify the gist of the invention.

[0027] 5 and 6, the air purification unit 10 may be integral with a decorative panel 6 that is detachable or openable with respect to the main body 2. This allows the user to easily perform maintenance on the air purification unit 10 by removing or opening the decorative panel 6. In this case, the power supply unit 11 that supplies electricity to the air purification unit 10 may be fixed to the main body 2. This prevents the weight of the power supply unit 11 from imposing a load on the decorative panel 6, thereby suppressing increases in weight and size required to increase the strength of the decorative panel 6.

[0028] The air purifying unit 10 and the power supply unit 11 may be configured to be electrically connected by, for example, the air purifying unit side terminal part 10a and the power supply unit side terminal part 11a. The air purifying unit side terminal part 10a and the power supply unit side terminal part 11a are terminal parts that are separated when the decorative panel 6 is removed or opened, and are in contact when the decorative panel 6 is attached or closed. With such a configuration, the electrical connection between the air purifying unit 10 and the power supply unit 11 is linked to the attachment / detachment or opening / closing of the decorative panel 6, and handling during maintenance can be improved. Also, for example, a wire or the like that constantly connects the air purifying unit 10 and the power supply unit 11 is not required. In this case, it is preferable to arrange the air purifying unit 10, the power supply unit 11, the air purifying unit side terminal part 10a, and the power supply unit side terminal part 11a close to each other. For example, it is preferable to arrange the air purifying unit 10, the power supply unit 11, the air purifying unit side terminal part 10a, and the power supply unit side terminal part 11a horizontally or approximately horizontally. With such an arrangement, for example, it is easy to add components to the inside of an existing product.

[0029] The indoor unit 1 of the four-way cassette type packaged air conditioner is an example of a blower according to the present disclosure. The blower according to the present disclosure may be any blower such as a two-way cassette type packaged air conditioner, a home air conditioner, a bathroom dryer, an air purifier, a humidifier, and a dehumidifier. The installation location of the blower according to the present disclosure is not limited to the ceiling 100.

[0030] FIG. 7 is a schematic diagram showing a configuration of a ventilator 20 according to the first embodiment. The air blowing device according to the present disclosure may be a ventilator 20 as shown in FIG. 7. The ventilator 20 includes a main body 2 that houses a fan 3, a decorative panel 6 that faces a target space and has an inlet 7 for taking in air into an air passage inside the main body 2, and an air purifying unit 10 that purifies the air by discharging electricity. The ventilator 20 is installed on a wall 200, for example. The ventilator 20 takes in air from a room, which is the target space, through the inlet 7, and discharges the air to the outside through an outlet 8 of the main body 2. The air purifying unit 10 is disposed between the fan 3 and the decorative panel 6, and is housed inside the main body 2 and the decorative panel 6.

[0031] In this way, the blower according to the present disclosure can be applied to other than the indoor unit 1 of a four-way cassette type packaged air conditioner. The blower according to the present disclosure is particularly suitable for the indoor unit 1 of a four-way cassette type packaged air conditioner. In order to purify the air faster, it is important to increase the amount of air passing through the air purifying unit 10. The four-way cassette type packaged air conditioner has a large air volume among various blowers, and the air can be efficiently purified by additionally installing the air purifying unit 10. Moreover, a turbofan is generally used in the four-way cassette type packaged air conditioner. The turbofan has a characteristic that the air volume is less likely to decrease even if the pressure loss increases, compared to the cross-flow type blower of a wall-mounted room air conditioner or the propeller fan of the ventilation fan 20. Therefore, even if the air purifying unit 10 is placed in the air duct, the blowing capacity and the air conditioning capacity can be maintained high.

[0032] As described above, the above-described embodiments and modifications may be arbitrarily combined, and any components may be modified or omitted, without departing from the spirit of the present disclosure. Examples of various aspects of the present disclosure are summarized below as appendices. (Appendix 1) A main body that houses a fan; A decorative panel facing a target space and having an intake port for taking in air into an air passage inside the main body; an air purification unit that purifies the air by discharge; Equipped with The air blower, wherein the air purification unit is disposed between the fan and the decorative panel and is housed inside the main body and the decorative panel. (Appendix 2) The air blower according to claim 1, wherein the air purification unit is integral with the decorative panel that is detachable or openable relative to the main body. (Appendix 3) 3. The air blower according to claim 2, wherein a power supply unit that supplies electricity to the air purification unit is fixed to the main body. (Appendix 4) The air blower device described in Appendix 3, wherein the air purification unit and the power supply unit are configured to be separated when the decorative panel is removed or open, and to be conductively connected by terminal parts that come into contact when the decorative panel is attached or closed. (Appendix 5) The air blower according to any one of claims 1 to 4, wherein the air purification unit is an electric dust collection type device having an electrode portion that performs discharge. (Appendix 6) The air blower according to claim 5, wherein the electrode unit discharges at a voltage of 3 kV or more. (Appendix 7) The blower according to claim 5, wherein the electrode unit discharges high voltage of 5 kV or more. (Appendix 8) A blower device as described in any one of Supplementary Note 5 to Supplementary Note 7, wherein in a cross section of the air passage in the flow direction at the position of the electrode portion, the area of ​​the region in which the electrode portion is located accounts for more than 50% and less than 100% of the area of ​​the air passage. (Appendix 9) The main body accommodates a bell mouth that guides air to an inlet of the fan, The air blower according to any one of claims 5 to 8, wherein the electrode portion is configured to cover an area of ​​an opening of the bell mouth when viewed from the perspective of a flow direction of the air passage. (Appendix 10) The air blower according to any one of claims 5 to 9, wherein the electrode portion is configured to be included in an area of ​​the air inlet when viewed from a flow direction of the air passage. (Appendix 11) The air blower according to any one of claims 5 to 10, wherein the electrode unit is composed of a plurality of modules. (Appendix 12) 12. The blower according to any one of claims 1 to 11, wherein the blower is an indoor unit of a four-way cassette-type packaged air conditioner having four air outlets. [Explanation of symbols]

[0033] REFERENCE SIGNS LIST 1 indoor unit, 2 main body, 3 fan, 4 heat exchanger, 5 bell mouth, 6 decorative panel, 7 intake port, 8 exhaust port, 10 air purifier unit, 10a terminal part on air purifier unit side, 11 power supply unit, 11a terminal part on power supply unit side, 20 ventilation fan, 100 ceiling, 200 wall

Claims

1. A main body that houses a fan; A decorative panel facing a target space and having an intake port for taking in air into an air passage inside the main body; an air purification unit that purifies the air by discharge; Equipped with The air blower, wherein the air purification unit is disposed between the fan and the decorative panel and is housed inside the main body and the decorative panel.

2. The air blower according to claim 1 , wherein the air purification unit is integral with the decorative panel, which is detachable from or openable with respect to the main body.

3. The air blower according to claim 2 , wherein a power supply unit that supplies electricity to the air purification unit is fixed to the main body.

4. The air blower device according to claim 3, wherein the air purification unit and the power supply unit are configured to be electrically connected by terminal parts that are separated when the decorative panel is removed or open and that come into contact when the decorative panel is attached or closed.

5. The air blower according to claim 1 , wherein the air purifying unit is an electric dust collecting device having an electrode portion that performs electric discharge.

6. The air blower according to claim 5 , wherein the electrode portion discharges at a voltage of 3 kV or more.

7. The air blower according to claim 5 , wherein the electrode portion discharges a high voltage of 5 kV or more.

8. The air blower according to claim 5 , wherein in a cross section of the air passage in the flow direction at the position of the electrode portion, a ratio of an area of ​​the air passage where the electrode portion is located to an area of ​​the air passage is equal to or greater than 50% and less than 100%.

9. The main body accommodates a bell mouth that guides air to an inlet of the fan, The air blower according to claim 5 , wherein the electrode portion is configured to cover an area of ​​an opening of the bellmouth when viewed from the perspective of a flow direction of the air passage.

10. The air blower according to claim 5 , wherein the electrode portion is configured to be included in an area of ​​the air inlet when viewed from the perspective of a flow direction of the air passage.

11. The air blower according to claim 5 , wherein the electrode portion is composed of a plurality of modules.

12. 5. The blower according to claim 1, wherein the blower is an indoor unit of a four-way cassette-type packaged air conditioner having four air outlets.

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