fan

Abstract

A blower that can be used by mounting a battery and includes a body section that features: a nozzle connection provided on a front side of the body section; an airflow generation unit configured to generate an airflow within an interior of the body section from a rear side of the body section towards the nozzle port by being powered by electrical energy from the battery; and a partition wall arranged in such a way as to divide the interior space into a first room and a second room, wherein: the first room is configured to accommodate the battery, and the second room is located outside the first room and is configured so that the airflow can pass through it.

Description

TECHNICAL AREA

[0001] The present invention relates to a blower. STATE OF THE ART

[0002] The JP 2014-148950A is a relatively high-performance electric power tool. This tool incorporates a low-power battery pack configured to function as an electrical power source, thus improving convenience and ease of use.

[0003] The electric motor tool according to JP 2014 - 148 950 A is an electric blower that has a tubular nozzle for blowing air at the front of the housing, an air fan that sends air to the nozzle by rotation, and an electric motor that drives this air fan by rotation in the housing.

[0004] The electric blower has a multitude of mounting sections, each of which allows separate rechargeable battery packs to be attached to the housing, and is configured so that the electric motor is powered by the electrical energy of the multitude of battery packs attached to these mounting sections. SUMMARY

[0005] However, the conventional technology described in JP 2014 - 148 950 A still has room for improvement.

[0006] In view of the above circumstances, the present disclosure provides a blower with improved functionality and higher performance. Means of solving the problem

[0007] According to one aspect of the present disclosure, a blower is provided which is adapted to be used by mounting a battery and comprises a body section having: a nozzle connection provided on a front side of the body section; an airflow generating unit configured to generate, by being supplied with electrical energy from the battery, an airflow in an interior space of the body section from a rear side of the body section towards the nozzle connection; and a partition arranged to divide the interior space into a first space and a second space, wherein: the first space is configured to accommodate the battery, and the second space is located outside the first space and is configured to allow the airflow to pass through it.

[0008] This configuration makes it possible to improve functionality at high performance by increasing the cooling efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective view of the blower from above. Fig. Figure 2 is a perspective view of the blower from below. Fig. Figure 3 is a side view from the left in the plane, defined from front to back and from top to bottom along the axis. Fig. Figure 4 is a perspective view of a blower with a filter in the air intake opening from below. Fig. 5 is a side view from the left of the in Fig. 4 depicted blower, shown in the plane defined from front to back and from top to bottom along the axis. Fig. Figure 6 is a side view from the left, showing the relationship between the partition's connecting opening and the through-hole in the battery, which are connected by the battery mounting section. Fig. Figure 7 is a side view from the left, showing the relationship between the partition's connecting opening and the through-hole in the battery, which are connected by the battery mounting section. Fig. Figure 8 is a side view from the left, showing the relationship between the connecting opening of the partition and the through-hole in the battery, which are directly connected to each other. Fig. Figure 9 is a side view from the left, showing the relationship between the front section of the first chamber and the rear end face of the coupling section of the airflow generating unit. Fig. Figure 10 is a perspective view showing the air inlet opening that opens in the wall section and the circumferential wall section of the body section. DETAILED DESCRIPTION

[0009] An embodiment of the present disclosure is described below with reference to the drawings. Various features described in the embodiment described below can be combined with one another. 1. Overall configuration

[0010] Chapter 1 describes an embodiment of a blower 1. The blower 1 is an electrical power device that blows out air and is used, for example, to blow away fallen leaves, debris, pebbles, water droplets, and other objects (hereinafter simply referred to as "object"). The blower 1 is a blower that can be used by mounting a battery 7, e.g., a centrifugal blower with a centrifugal fan (not shown) or an axial blower 10 with an axial fan. An example of an axial blower 10 (blower 1) is shown below.

[0011] Fig. Figure 1 is a perspective view of the blower from above. Fig. Figure 2 is a perspective view of the blower from below. Fig. Figure 3 is a side view from the left, shown in a plane defined from front to back and from top to bottom along an axis. Fig. Figure 4 is a perspective view of a blower with a filter in the air intake opening from below. Fig. 5 is a side view from the left of the in Fig. 4 blowers shown, shown in the plane defined from front to back and from top to bottom along the axis. Fig. Figure 6 is a side view from the left, showing the relationship between the partition's connecting opening and the through-hole in the battery, which are connected by the battery mounting section. Fig. Figure 7 is a side view from the left of the relationship between the connecting opening of the partition and the through-hole in the battery, which are connected by the battery mounting section. Fig. Figure 8 is a side view from the left, showing the relationship between the connecting opening of the partition and the through-hole in the battery, which are directly connected to each other. Fig. Figure 9 is a side view from the left, showing the relationship between the front section of the first chamber and the rear end face of the coupling section of the airflow generating unit. Fig. Figure 10 is a perspective view showing the air inlet opening that opens in the wall section and the circumferential wall section of the body section. In the following description, the axial direction of the axial fan 10 and each element of the axial fan 10 is defined based on the directions "top and bottom," "right and left," and "front and back" shown in the figure. Specifically, the side to which the fan tube 3 is attached when viewing the axial fan 10 in the figure is defined as "front," "forward," or "front end," and the side opposite the side to which the fan tube 3 is attached in the figure is defined as "back," "backward," or "rear end." The right side is defined as "right" or "right side" and the left side as "left" or "left side" when the axial fan 10 is viewed from above and behind in the figure.

[0012] As in Fig. 1 and Fig. As shown in Figure 2, the axial blower 10, which in one embodiment corresponds to the blower 1, has a body section 2 in which an interior IS is formed, extending from an air inlet opening 21 to a nozzle connection 22, and a blower tube 3 which is inserted into and fitted into the nozzle connection 22. In the embodiment shown in Fig. The axial fan 10, as shown in Figure 3, is driven by the driving force of the motor 41 provided by the airflow generation unit 4. This causes the fan 44, connected to the motor 41, to rotate within the interior IS and generate a high-speed airflow AF from the air inlet opening 21 to the outlet opening 31 of the fan tube 3. The airflow AF is then discharged to the outside from the outlet opening 31. The operator can blow the object away by holding the axial fan 10 and blowing the airflow AF exiting the outlet opening 31 onto the ground. The details of these configurations are described below. (Body section 2)

[0013] Body section 2 is a resin cylinder or box extending in a front-to-back direction and having an opening at its front end at the nozzle connection 22. An air inlet opening 21 is formed at the rear end of body section 2, through which outside air can be introduced. Thus, body section 2 has an air inlet opening 21 and a nozzle connection 22. Body section 2 contains the mechanical and electrical equipment for operating the axial blower 10. This mechanical and electrical equipment includes a battery mounting section 27, an airflow generation unit 4, a partition 5, a control unit 6, and a battery 7. Furthermore, body section 2 has a handle 26 and feet 28 on its outer surface.

[0014] As in Fig. As shown in Figure 3, body section 2 has an interior space IS that leads from the air inlet opening 21 to the nozzle connection 22. The interior space IS acts as an airflow path that directs the outside air introduced through the air inlet opening 21 to the nozzle connection 22. The interior space IS comprises a first chamber IS1, a second chamber IS2, and a third chamber IS3.

[0015] The first chamber IS1 and the second chamber IS2 are positioned in an area extending from the central to the rear section of body section 2. The first chamber IS1 and the second chamber IS2 are formed by partitioning the interior IS, defined by the rear outer cylindrical section 25a, with the partition 5. That is, the partition 5 is arranged to divide the interior IS into a first chamber IS1 and a second chamber IS2.

[0016] The configuration is described in detail below. The partition 5 is a resin cylindrical element extending in the front-to-back direction and positioned in a region from the central to the rear section of the body section 2. The partition 5 is tapered, so that the bore (the inner diameter) increases from front to back. The surface of the rear end of the partition 5 is essentially circularly open, and the front end is closed with a cylindrical section. With this configuration, the inner conical space formed by the partition 5 constitutes the first space IS1. Within the partition 5 are arranged a battery mounting section 27, to which a battery 7 can be attached or detached, and a control unit 6, with the battery 7 attached to the battery mounting section 27.In other words, the first room IS1 is configured to accommodate the battery mounting section 27, the control unit 6 and the battery 7.

[0017] Furthermore, the rear outer cylinder section 25a is a resin cylinder element that extends straight in the front-to-back direction and is positioned in a region from the middle section to the rear section of the body section 2. The rear outer cylinder section 25a has a larger diameter than the cylindrical outer diameter formed by the partition 5 and is located outside the partition 5. With this configuration, a second space IS2 is formed between the cylindrical inner wall of the rear outer cylinder section 25a and the cylindrical outer wall of the partition 5, which is located inside this inner wall.

[0018] The rear outer cylinder section 25a and the rear end of the partition 5 form an air inlet opening 21, allowing outside air to enter at the rear of body section 2. Specifically, the air inlet opening 21 is configured to open in the rear wall of body section 2 and direct outside air into the second chamber IS2 of body section 2. The second chamber IS2 is located outside the first chamber IS1 and is configured to allow the airflow AF to pass through it. This configuration generates an airflow AF in the second chamber IS2, which is located outside the first chamber IS1, where the battery 7 is located. Thus, the partition 5, which separates the first chamber IS1 from the second chamber IS2, is cooled by the airflow AF, thereby cooling the battery 7 through the partition 5. As a result, the cooling efficiency of the battery 7 can be increased to improve its performance at high power.The second chamber IS2 can surround the entire perimeter of the first chamber IS1 or a portion of the entire perimeter of the first chamber IS1. In the latter case, the second chamber IS2 can be a chamber oriented upwards, downwards, to the right, to the left, or a combination of these directions relative to the first chamber IS1. In particular, the second chamber IS2 preferably forms a chamber that surrounds the entire perimeter of the first chamber IS1. With this configuration, the partition 5 is positioned to delimit the perimeter of the first chamber IS1, and outside air is directed into the second chamber IS2, enabling efficient cooling of the battery 7 and further improving the battery's performance at high power.

[0019] The third chamber IS3 is positioned in a region extending from the central section to the front section of body section 2 and is formed by the front outer cylinder section 25b. The front outer cylinder section 25b is a resin cylinder element extending in the front-to-back direction and positioned in a region extending from the central section to the front section of body section 2. The front section of the front outer cylinder section 25b extends straight in the front-to-back direction (the bore (the inner diameter) is constant in the front-to-back direction) and is designed to have a slightly smaller diameter than the rear end (the base) of the blower tube 3.The rear section of the front outer cylinder section 25b tapers so that the bore (the inner diameter) widens (increases) from front to rear, and the rear end of the front outer cylinder section 25b has a slightly larger diameter than the rear end (the base) of the blower tube 3.

[0020] The leading edge (opening in the front end face) of the front outer cylinder section 25b has a nozzle connection 22, the nozzle connection 22 being configured such that the fitting section 32 of the blower tube 3 can be inserted and engaged. That is, the nozzle connection 22 is provided at the front of the body section 2. The outer surface of the rear edge (opening in the rear end face) of the front outer cylinder section 25b is in contact with the inner surface of the rear outer cylinder section 25a. This allows the second chamber IS2 and the third chamber IS3 to be connected. The airflow generation unit 4 is arranged within the front outer cylinder section 25b. That is, the airflow generation unit 4 is located in the third chamber IS3.The airflow generation unit 4, located in the third space IS3, generates an airflow AF in the interior IS of body section 2 from the rear side of body section 2 to the nozzle connection 22. Details of the airflow generation unit 4 are described below. (Blower tube 3)

[0021] The blower tube 3 is a resin cylinder element (straight tube) extending in a front-to-back direction. The blower tube 3 has a fitting section 32 at its rear end, which can be detachably mounted on the body section 2. The fitting section 32 is configured to be inserted into and engage with the nozzle port 22 of the body section 2. The front section of the blower tube 3 projects forward from the nozzle port 22 of the body section 2. The opening (tip opening) at the front of the blower tube 3 forms the outlet port 31. The blower tube 3 can be flexible or rigid. (Engine cover 24 and flow straightening plate 23)

[0022] The motor cover 24 is a resin plate container located in the third chamber IS3. The motor cover 24 is a cylindrical element with a closed end and is positioned in the central section of the third chamber IS3 such that its longitudinal direction is aligned with the axis O. The rear end surface of the motor cover 24 is circularly open, and the front end section is conically closed.

[0023] The front part (conical section) of the motor cover 24 projects in such a way that it penetrates the interior of the blower tube 3 when the blower tube 3 is inserted and fitted into the body section 2. The motor cover 24 is supported in the center of the front outer cylinder section 25b by a plurality of flow-straightening plates 23, as shown in Fig. 3 shown.

[0024] The flow straightening plate 23 is arranged between the inner surface of the front outer cylinder section 25b and the outer surface of the engine cover 24. The flow straightening plate 23 is a rectangular, plate-shaped resin element that extends in the front-to-back direction such that its longitudinal direction is the front-to-back direction. The inner end section of the flow straightening plate 23 is connected to the outer surface of the engine cover 24. Furthermore, the outer end section of the flow straightening plate 23 is connected to the inner surface of the front section of the front outer cylinder section 25b. In other words, the flow straightening plate 23 is a support element arranged between the inner surface of the front outer cylinder section 25b and the outer surface of the engine cover 24. This means that the flow straightening plate 23 is configured to support the engine cover 24 in the third space IS3.

[0025] The flow straightening plate 23 aligns the airflow AF (in particular the airflow AF supplied by the fan 44 downstream of the fan 44, as described below) in the third chamber IS3. This flow straightening plate 23 is also referred to as a static vane. In one embodiment, several (five in the example shown) flow straightening plates 23 are arranged at equal intervals in the circumferential direction of the front outer cylinder section 25b.

[0026] In one embodiment, the engine cover 24, each of the flow straightening plates 23, and the front outer cylinder section 25b are integrally formed as a single component. However, the engine cover 24, each of the flow straightening plates 23, and the front outer cylinder section 25b can also be formed by joining several separately formed parts. (Airflow generation unit 4)

[0027] As in Fig. As shown in Figure 3, the airflow generation unit 4 in the axial blower 10 is an axial fan 40. This means that the airflow generation unit 4 is configured to generate an airflow AF through an axial fan 40. The axial fan 40 has a motor 41 and a fan 44. The airflow generation unit 4 is located within the third chamber IS3. Outside air, introduced through the air inlet opening 21 located at the rear of the body section 2, is directed through the second chamber IS2 to the airflow generation unit 4. This means that the airflow generation unit 4 is located in front of the partition 5 that forms the second chamber IS2. With this configuration, the battery 7 in the blower 1, which has an axial fan 40, can be efficiently cooled, thereby improving its performance at high power.Furthermore, the design of body section 2 with a smaller circumference contributes to the reduction in size of the blower 1.

[0028] Motor 41 is an electric motor and is housed in motor cover 24. This means that motor 41 is located in the central section of the third chamber IS3. Motor 41 has a rotating shaft 43, and the rotating shaft 43 is arranged along axis O. In motor 41, the rotating shaft 43 is configured to rotate around axis O when electric current is supplied to the coil.

[0029] The motor 41 is mounted inside the motor cover 24. When the motor 41 is mounted inside the motor cover 24, the rotating shaft 43 protrudes rearward from the rear end face of the motor cover 24.

[0030] The fan 44 is located behind the motor cover 24 and in the central section of the third compartment IS3. The fan 44 has a coupling section 45 and a plurality of blade sections 46.

[0031] The coupling section 45 is a short cylindrical element and has the same diameter as the engine cover 24. The rear end face of the coupling section 45 is closed with a spherical surface (in other words, domed), and the front end face of the coupling section 45 has a circular opening. A projection 47 is formed in the central section of the coupling section 45, and an insertion hole 48 for receiving the rotating shaft 43 of the engine 41 is formed in the projection 47. By fitting the rotating shaft 43 of the engine 41 into the insertion hole 48 of the coupling section 45, the coupling section 45 is fastened to the rotating shaft 43 of the engine 41.

[0032] Furthermore, the coupling section 45 rotates relative to the engine cover 24 and forms part of the engine cover 24 as its rear housing.

[0033] In one embodiment of the axial blower 10, several vane sections 46 are arranged (protrude) on the outer circumference of the coupling section 45. In another embodiment, several vane sections 46 (12 in the illustrated example) are arranged at equal intervals in the circumferential direction of the coupling section 45. When the motor 41 is driven and the rotating shaft 43 and the fan 44 are rotated about the axis O, each of the vane sections 46 generates an airflow from rear (upstream) to front (downstream) in the third chamber IS3. That is, in the axial blower 10, when the axial fan 40 rotates in the third chamber IS3 due to the driving force of the motor 41, a high-speed airflow AF is generated from the upstream air inlet opening 21 to the downstream nozzle connection 22 and outlet opening 31.This means that the axial fan 40, which is an example of the airflow generation unit 4, is configured to generate an airflow AF in the interior IS of body section 2 from the rear of body section 2 towards the nozzle port 22 by supplying it with electrical energy from the battery 7. The blade sections 46 of the axial fan 40 are also referred to as rotating blades.

[0034] In one embodiment, the motor 41 (the motor's rotating shaft 43) and the fan 44 are arranged with their central axis of rotation aligned along the axial direction O, forwards and backwards. The central axes of the motor 41 (the rotating shaft 43) and the fan 44 coincide with the central axes of the blower tube 3, the outer rotating section 25, and the motor cover 24, and the interior IS extends substantially straight along the axis O. (Handle 26)

[0035] As in Fig. As shown in Figure 1, a handle 26 is provided on the upper section of the body section 2. The handle 26 is a cylindrical element extending in the front-to-back direction and is the part gripped by the operator. The front end section 26a and the rear end section 26b of the handle 26 are connected to the upper front section and the upper rear section of the body section 2, respectively. A throttle lever 261 is provided at the front of the handle 26. This lever serves as an actuating means for increasing or decreasing the airflow AF while the operator grips the handle. The throttle lever 261 is configured to depress the head of an actuator switch (not shown) located inside the body section 2. The actuator switch controls the airflow generation unit 4 depending on the pressure applied to its head, thereby increasing or decreasing the amount of air blown by the axial fan 10. (Feet 28)

[0036] As in Fig. As shown in Figure 2, the foot 28 can hold the axial fan 10 in a horizontal position when placed on the ground or a placement platform by making contact with the ground or platform. Furthermore, if the axial fan 10 is dropped and the foot 28 strikes the ground first, damage to the axial fan 10 can be reduced. Specifically, the foot 28 has a front foot 281 located below a front face of the body section 2 and a rear foot 282 located below a rear face of the body section 2. The front foot 281 and the rear foot 282 are configured to hold the axial fan 10 in a horizontal position by making contact with the ground or placement platform. (Battery mounting section 27)

[0037] As in Fig. As shown in Figure 3, the battery mounting section 27 is located within the lower section of the first room IS1 along the inner wall of the partition 5. Furthermore, the battery mounting section 27 has a metallic terminal block (not shown in the figure), and this terminal block is electrically connected to the motor 41 and the control unit 6. When the terminal block 72 of the battery 7 is connected to the terminal block of the battery mounting section 27, electrical energy is supplied from the battery 7 to the motor 41 and the control unit 6. (Control unit 6)

[0038] As in Fig. As shown in Figure 3, the control unit 6 has a box shape and is attached to the inner wall of the partition 5. The control unit 6 is electrically connected to the motor 41 and the battery 7 via cables and connectors, etc., and controls the power supply from the battery 7 to the motor 41. In other words, the control unit 6 is configured to electrically control the rotation of the motor 41. The control unit 6 may have a heat sink to dissipate the heat it generates. With this configuration, the control unit 6 can be efficiently cooled by providing a heat sink, thereby improving its functionality at high power. (Battery 7)

[0039] As in Fig. As shown in Figure 3, battery 7 is a known battery configured to house a secondary battery, e.g., a lithium-ion secondary battery, in a rectangular casing extending from front to back. Battery 7 is sized to fit into the first space IS1. Battery 7 provides sufficient power and charge capacity for the application.

[0040] When attaching the battery 7 to the battery mounting section 27, the battery 7 is fitted into the battery mounting section 27 by sliding it into the battery mounting section 27 from back to front. When the battery 7 is moved into the position where it is supported by the battery mounting section 27, the engagement section of the battery 7 engages with the battery mounting section 27 and the battery 7 is secured to the battery mounting section 27.

[0041] The battery 7, mounted in the battery mounting section 27, is arranged in an inclined orientation so that its rear is positioned lower than its front. The battery 7 has a terminal 72, and when the battery 7 is attached to the battery mounting section 27, the terminal 72 of the battery 7 and the terminal of the battery mounting section 27 (not shown) are electrically connected. This means that the battery 7 has a terminal 72. By connecting the terminal 72 of the battery 7 to the terminal of the battery mounting section 27, electrical energy is then transferred from the battery 7 to the motor 41 of the airflow generation unit 4 and to the control unit 6. This means that the battery mounting section 27 is electrically connected to the airflow generation unit 4.

[0042] When the battery 7 is removed from the battery mounting section 27, lifting a connecting lever (not shown) on the battery 7 releases the engagement between the battery mounting section 27 and the engagement section, allowing the battery 7 to slide backward relative to the battery mounting section 27. This means that the battery mounting section 27 is configured so that the battery 7 is removable. 2. Configuration of the IS interior and the components arranged within the IS interior

[0043] This section describes the configuration of the interior IS of the axial fan 10 according to one embodiment and the configuration of the components arranged in the interior IS with reference to the Fig. 4 to 10 described.

[0044] As mentioned above, the interior IS has a first room IS1 and a second room IS2. As in Fig. As shown in Figure 5, the partition 5, which separates the first chamber IS1 from the second chamber IS2, preferably has a connecting opening 51. The connecting opening 51 is configured to connect the first chamber IS1 with the second chamber IS2. One or more of the connecting openings 51 can be provided at any location in the partition 5. In particular, the connecting opening 51 above the first chamber IS1 is arranged in a predetermined shape. The predetermined shape is, for example, a circle, an ellipse, a polygon, or the like. In other words, the connecting opening 51 is configured to be positioned above the battery 7 when the blower 1 is in use. In this case, the operating condition is as follows: The handle 26 is gripped so that it is positioned above the axis O, the blower 1 is used so that the blower tube 3 faces the floor, and so on.Battery 7 and battery mounting section 27 are located beneath partition 5, and battery 7 is attached to battery mounting section 27. When mounted in battery mounting section 27, battery 7 is positioned at an angle so that its rear is lower than its front. Since battery 7's terminal 72 is located on the front of its underside, it is positioned higher than the rear of the underside. In other words, when battery 7 is attached to battery mounting section 27, it is configured to be positioned opposite connection opening 51 relative to battery 7 and connected to terminal 72. With this configuration, first chamber IS1 and second chamber IS2 are connected via connection opening 51, allowing the airflow AF generated by airflow generation unit 4 to further enhance the cooling efficiency of battery 7.As a result, the functionality at high power can be further improved. Since the connection opening 51 is located above the battery 7 when the fan 1 is in operation, this configuration also allows the heat generated by the battery 7 to flow upwards to the connection opening 51 via the upward airflow. Furthermore, the airflow AF enables the heat generated by the battery 7 to be directed to the connection opening 51 without accumulating in the first chamber IS1. Therefore, in such a configuration, the fan 1 can provide excellent functionality at high power. When the fan 1 is not in use (i.e., when it is placed on a horizontal surface), the underside of the partition 5 slopes downwards from front to back.With this configuration, water droplets on battery 7 are channeled downwards to the rear of battery 7 by their own weight. This prevents short circuits and corrosion of battery 7 and battery mounting section 27 caused by water droplets.

[0045] As in Fig. 4 and Fig. As shown in Figure 5, the air inlet opening 21 can have a first air inlet opening 211 and a second air inlet opening 212. In this case, the first air inlet opening 211 is configured to connect to the first room IS1, and the second air inlet opening 212 is configured to connect to the second room IS2. The outside air introduced through the first air inlet opening 211 flows into the first room IS1 as the first airflow AF1. Furthermore, the outside air introduced through the second air inlet opening 212 flows into the second room IS2 as the second airflow AF2. In other words, the airflow AF comprises the first airflow AF1 and the second airflow AF2. The first airflow AF1 is then configured to flow through the first room IS1. The second airflow AF2 is configured to flow through the second room IS2.With this configuration, the first airflow AF1, which flows through the first chamber IS1, enables more effective cooling of the battery 7 and also improves functionality at high power.

[0046] Furthermore, the filter assembly section 211a of the first air inlet opening 211 is equipped with a filter 8, and the filter 8 is positioned at the rear of the body section 2 such that it covers the first air inlet opening 211. This means that the body section 2 has a filter 8 and is configured such that the first airflow AF1 is directed through the filter 8 into the first chamber IS1. The filter 8 also has a collection surface 81 for collecting objects from the outside air. The collection surface 81 is circular in plan view and is inclined upwards at an angle from the front to the rear. This means that the filter 8 is configured to collect objects from the first airflow AF1. With this configuration, the battery 7 can be cooled while the filter 8 removes the objects from the outside air.

[0047] Furthermore, filter 8 can be removed from filter mounting section 211a of body section 2. By removing filter 8 from body section 2, the battery 7, which is mounted inside the first space IS1, can be detached. Additionally, by removing filter 8 from body section 2, objects to be collected on collection surface 81 of filter 8 can be easily removed from collection surface 81.

[0048] Furthermore, the filter 8 and the body section 2 are preferably configured with a removable mechanism, such as a snap-lock mechanism, magnetic mechanism, bayonet mechanism, screw-lock mechanism, friction-lock mechanism, etc. In particular, it is preferred that the filter 8 and the body section 2 are configured such that they can be removed as a magnetic mechanism by means of magnets 82 arranged above and below the filter 8 and a magnet 211b arranged on the filter mounting section 211a (above and below the first air inlet opening 211 of the body section 2). [Other]

[0049] The blower 1 according to one embodiment can be implemented in the following configurations.

[0050] In one embodiment, which is in Fig. As shown in Figure 5, the battery 7 is arranged below the first chamber IS1 and the connecting opening 51 is formed above the first chamber IS1, so that a space exists between the battery 7 and the section of the partition 5 that defines the connecting opening 51. This configuration is not limited to this one. For example, the battery 7 can be arranged above the first chamber IS1 and the connecting opening 51 can be formed above the first chamber IS1. As shown in Fig. As shown in Figure 6, the specific configuration is as follows. Above the first chamber IS1, a connecting opening 51 is formed in the partition 5 to connect the first chamber IS1 to the second chamber IS2. Furthermore, the battery mounting section 27, which has a connecting opening 27a, is arranged above the first chamber IS1. Accordingly, the section of the partition 5 that defines the connecting opening 51 and the section of the battery mounting section 27 that defines the connecting opening 27a are brought into contact with each other. Thus, the first chamber IS1 and the second chamber IS2 are connected to each other by the connecting opening 51 and the connecting opening 27a. When the battery 7 is mounted on the battery mounting section 27, the battery 7 is arranged such that at least a section of it covers the connecting opening 27a. That is, the battery 7 is arranged such that at least a section of it covers the connecting opening 51 through the connecting opening 27a.In other words, the battery 7 is positioned so that it covers the connection opening 51. With this configuration, the airflow AF through the connection opening 51 of the partition 5 is directed directly onto at least a section of the battery 7, thus enabling efficient cooling of the battery 7. As a result, its performance at high power can be further improved. The battery mounting section 27 can be configured so that the battery 7 directly contacts the section of the partition 5 that defines the connection opening 51.

[0051] Furthermore, the battery 7 can have a housing 71, wherein the housing 71 has a first opening 711 and a second opening 712. As in Fig. As shown in Figure 6, the battery 7 has, in particular, a first opening 711 on the side of the housing 71 opposite the connecting opening 51 and a second opening 712 on the same side of the housing 71 when it is mounted in the battery mounting section 27. The first opening 711 and the second opening 712 are connected by the air passage 713. That is, the air passage 713 opens at one end at the first opening 711 and at the other end at the second opening 712. This configuration allows the air introduced through the first opening 711 to be distributed through the air passage 713 toward the second opening 712. In other words, the first opening 711 is configured to allow air to flow into the interior of the housing 71, and the second opening 712 is configured to communicate with the first opening 711 and to exhaust air from the interior of the housing 71.

[0052] The air passage 713 is arranged to cool the secondary batteries housed in the battery 7. Specifically, the air passage 713 is located between multiple stored secondary batteries, between the housing 71 and the secondary batteries, or in other similar positions. This means that the air passage 713 is located near the secondary battery. The secondary battery is configured to be cooled by the air circulating within the internal configuration of the air passage 713. The second opening 712 is configured to connect to the connecting opening 51 and the connecting opening 27a when the battery 7 is attached to the battery mounting section 27. This means that the battery 7 is positioned so that the connecting opening 51 and the second opening 712 are connected.Thus, the second opening 712 is positioned so that it faces the connecting opening 51 when the battery 7 is attached to the battery mounting section 27. In other words, the connecting opening 51 and the second opening 712 are arranged so that they face each other when the battery 7 is mounted in the blower 1. The second opening 712 and the connecting opening 51 can be separate, and a gap can be provided between the second opening 712 and the connecting opening 51.

[0053] When the battery mounting section 27 is positioned on the upper surface section of the partition 5, the battery 7's terminal 7 is located on the same side as the connection opening 51 above the battery 7. That is, it is preferred that the battery mounting section 27 be configured to be positioned on the same side as the connection opening 51 relative to the battery 7 and connected to the terminal 72 when the battery is attached to the battery mounting section. Since, in this configuration, the connection opening 51 and the battery mounting section 27 are located on the same side of the partition 5, the connection opening 51 of the partition 5 and the second opening 712 of the battery 7 are connected. This allows for more efficient cooling of the battery 7, as the airflow AF is directed onto at least one section of the battery 7. As a result, high-performance operation can be further improved.

[0054] In a Fig. Figure 5 describes the embodiment in which the connecting opening 51 of the partition 5 is formed above the first space IS1, but the invention is not limited to the case in which the connecting opening 51 of the partition 5 is formed below, or above and below the first space IS1. In particular, as shown in Fig. As shown in Figure 7, the connecting openings 51 are formed above and below the first compartment IS1. The connecting opening 51 positioned below the first compartment IS1 is connected to the connecting opening 27a of the battery mounting section 27. Thus, the connecting openings 51 are configured to connect, via the connecting openings 27a, to the first opening 711 and the second opening 712 of the battery 7 when the battery 7 is attached to the battery mounting section 27. With this configuration, an airflow AF is directed into the interior of the battery housing 71 through the connecting opening 51 of the partition 5 to directly cool the secondary battery located inside the housing 71. Therefore, in such a configuration, the fan 1 can provide excellent high-performance functionality.

[0055] In the Fig. Figure 5 describes an embodiment in which the battery 7 is arranged along the underside of the first chamber IS1 to provide a space between the battery 7 and the section of the partition 5 that defines the connection opening 51, and the connection opening 51 is formed above the first chamber IS1. However, the invention is not limited to this configuration. For example, the battery 7 can be arranged below the first chamber IS1 along the top side of the first chamber IS1. As shown in Figure 5, the battery 7 can be arranged along the top side of the first chamber IS1. Fig. As shown in Figure 8, the battery mounting section 27 is preferably configured such that the upper surface section of the battery 7 contacts the upper surface section of the partition 5 when the battery 7 is attached to the battery mounting section 27. The surface on which the battery 7 is mounted to the battery mounting section 27 is inclined such that the rear is positioned higher than the front. Due to the relationship between this inclination and the vertical thickness of the battery 7, the battery mounting section 27 is configured such that the upper surface of the battery 7 contacts the inner upper surface of the partition 5 when the battery 7 is mounted. Furthermore, the second opening 712 is provided in the upper section of the housing 71 of the battery 7, and the first opening 711 is provided in the rear surface of the housing 71 of the battery 7, so that air flows through the interior of the housing 71 of the battery 7.The first and second openings 711 and 712 are configured to connect to the connecting opening 51 when the battery 7 is mounted in the battery mounting section 27. With this configuration, the airflow AF introduced by the first air inlet opening 211 can be directed through the first opening 711 and the second opening 712 of the battery 7 and through the connecting opening 51 of the partition 5 into the second compartment IS2. This allows the secondary battery housed in the battery 7 to be cooled directly, thus enabling efficient cooling of the battery 7. As a result, its high-performance functionality can be further improved.

[0056] In a Fig. The embodiment shown in Figure 3 describes an example in which the first chamber IS1 is formed by the front end section of the partition 5 being cylindrically closed. However, the invention is not limited to this configuration. For example, the first chamber IS1 can be formed by the front end section of the partition 5 being covered by the rear end surface of the coupling section 45. In particular, as shown in Figure 3, the first chamber IS1 can be formed by the front end section of the partition 5 being covered by the rear end surface of the coupling section 45. Fig. As shown in Figure 9, the front end section of the partition 5 has an open cylindrical shape, and a spherical surface of the rear end face of the coupling section 45 is preferably arranged along this cylindrical shape. In other words, the front of the first chamber IS1 is preferably covered by a section of the axial fan 40. With this configuration, the first chamber IS1 is formed by a portion of the axial fan 40 and the partition 5. This allows for a reduction in the size of the fan 1 and improves its performance at high power.

[0057] In a Fig. Figure 2 describes an embodiment in which the air inlet opening 21 is arranged in the rear wall section of the body section 2. However, the disclosure is not limited to this configuration. The air inlet opening 21 can also be arranged in the circumferential wall section of the body section 2, in addition to or instead of the rear wall section of the body section 2. As shown in Figure 2, the air inlet opening 21 can also be arranged in the circumferential wall section of the body section 2, in addition to or instead of the rear wall section of the body section 2. Fig.As shown in Figure 10, the air inlet opening 21 can be located, in particular, on the left and right sides of the rear section of the body section 2. The air inlet openings 21 can be located in the upper, lower, right, left, or a combination of these directions. In other words, the air inlet openings 21 can open into a rear wall section and a circumferential wall section of the body section 2, and they can open into at least one of the rear and circumferential walls of the body section 2. With this configuration, the air inlet openings 21 are located on the side and circumferential walls, allowing more outside air to be drawn in and the battery 7 to be cooled efficiently. The result is excellent functionality at high performance.

[0058] In one embodiment described above, the case in which a detachable blower tube 3 is attached to the nozzle connection 22 of the body section 2 is described as an example, but the disclosure is not limited thereto. For example, the body section 2 and the blower tube 3 can be formed as a single piece, such that the blower tube 3 is not detachable from the body section 2.

[0059] Furthermore, it can be provided in any of the following configurations.

[0060] (1) A blower that is to be used by mounting a battery and comprises a body section having: a nozzle connection provided at a front of the body section; an airflow generating unit configured to generate, by being supplied with electrical energy from the battery, an airflow in an interior of the body section from a rear of the body section towards the nozzle connection; and a partition arranged to divide the interior into a first space and a second space, wherein: the first space is configured to accommodate the battery, and the second space is located outside the first space and is configured to allow the airflow to pass through it.

[0061] With this configuration, the battery is placed in the first compartment, which is the interior of the body section, allowing it to be cooled by the airflow generated by the airflow unit. As a result, its performance at high power levels can be improved.

[0062] (2) Blower according to (1) wherein the partition has a connecting opening and the connecting opening is configured to connect the first room to the second room.

[0063] With this configuration, the first and second compartments are connected via the connecting opening, allowing the battery to be further cooled by the airflow generated by the airflow unit. As a result, its performance at high power levels can be improved.

[0064] (3) Blower according to (2) wherein the battery is arranged so that it covers the connection opening.

[0065] With this configuration, the airflow through the connecting openings in the partition is directed straight onto at least one section of the battery, thus enabling efficient cooling. As a result, performance at high power levels can be further improved.

[0066] (4) Blower according to (2) or (3), wherein: the battery has a housing comprising: a first opening configured to allow air to flow into the interior of the housing, and a second opening connected to the first opening and configured to allow air to flow out of the interior of the housing, and the connecting opening and the second opening being arranged to be opposite each other when the battery is mounted in the blower.

[0067] With this configuration, the connecting opening of the partition and the second opening of the battery are positioned opposite each other, which allows the battery to be cooled even more efficiently and further improves functionality at high performance.

[0068] (5) Blower according to one of (2) to (4), wherein the connection opening is configured to be above the battery when the blower is in operation.

[0069] With this configuration, the position of the connection opening on the top of the battery allows the airflow caused by the battery's heat generation to be directed upwards (upward airflow) to the connection opening when the fan is operating. Therefore, in this configuration, the fan can provide excellent functionality at high power output.

[0070] (6) Blower according to (5) wherein: the battery has a terminal block, and the body section additionally has a battery mounting section configured to be: electrically connected to the airflow generating unit and to allow the battery to be removable, and positioned relative to the battery opposite the connection opening and connected to the terminal block when the battery is attached to the battery mounting section.

[0071] With this configuration, the position of the connection opening on the top of the battery allows the airflow caused by the battery's heat generation to be directed upwards (upward airflow) to the connection opening when the fan is operating. Therefore, in this configuration, the fan can provide excellent functionality at high power output.

[0072] (7) Blower according to any of (2) to (4) wherein: the battery has a terminal block, the body section additionally has a battery mounting section configured to be: electrically connected to the airflow generating unit and to allow the battery to be removable from it, and positioned relative to the battery on the same side as the connection opening and connected to the terminal block when the battery is attached to the battery mounting section.

[0073] With this configuration, the connection opening and the battery mounting section are located on the same side of the partition, allowing airflow to be directed onto at least one section of the battery, thus cooling it efficiently. As a result, performance at high power levels can be further improved.

[0074] (8) Blower according to one of (1) to (7), wherein: the body section additionally has an air inlet opening configured such that it: is open in a rear wall section of the body section and directs outside air into the second space of the body section.

[0075] With this configuration, the battery located in the first room is cooled by the partition and the airflow can be efficiently generated by the airflow generation unit, further improving functionality at high power.

[0076] (9) Blower according to any of (1) to (8), wherein: the second space forms a space surrounding the entire perimeter of the first space, and the body section additionally has an air inlet opening configured to be: open in a rear wall section of the body section, and direct outside air into the second space of the body section.

[0077] With this configuration, the partition is positioned to define the perimeter of the first room, while directing outside air into the second room, thus enabling efficient cooling of the battery and further improving its functionality at high power.

[0078] (10) Blower according to one of (1) to (9), wherein: the body section additionally has an air inlet opening configured such that it: is open in a rear wall section and a circumferential wall section of the body section, and directs outside air into the second space of the body section.

[0079] With this configuration, the air intake openings are located on the side and perimeter walls, allowing more outside air to be drawn in and the battery to be cooled efficiently. The result is excellent functionality at high performance.

[0080] (11) Blower according to one of (1) to (10), wherein: the airflow has: a first airflow that flows through the first space and a second airflow that flows through the second space.

[0081] With this configuration, the initial airflow passing through the first chamber allows for more effective cooling of the battery and also improves its functionality at high power.

[0082] (12) Blower according to (11), wherein the body section: additionally has a filter, and is configured to direct the first airflow through the filter into the first space, the filter being configured to collect objects contained in the first airflow.

[0083] This configuration allows the battery to be cooled while the filter removes objects to be collected from the outside air.

[0084] (13) Blower according to one of (1) to (12), wherein the airflow generating unit is arranged in front of the partition.

[0085] This configuration allows for efficient battery cooling, improving performance under high load. Furthermore, the circumference of the body section can be reduced, which contributes to a smaller fan.

[0086] (14) Blower according to one of (1) to (13), wherein the airflow generation unit is configured to generate the airflow through an axial fan.

[0087] With this configuration, a blower equipped with an axial fan can efficiently cool the battery, thereby improving its functionality at high performance.

[0088] (15) Blower according to (14) wherein the first space is configured such that its front is covered by part of the axial fan.

[0089] With this configuration, the first chamber is formed by part of the axial fan and a partition, enabling a compact design of the blower while simultaneously improving functionality at high performance.

[0090] Of course, the present revelation is not limited to this.

[0091] Finally, various embodiments of the present invention have been described, which are presented as examples and do not serve to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. The aforementioned embodiments and variations thereof are included within the scope and core of the invention and its equivalents according to the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2014 - 148 950 A [0002, 0003, 0005]

Claims

[1] Blower which is to be used by mounting a battery and which includes a body section which has: a nozzle connection provided on a front side of the body section; an airflow generation unit configured to generate an airflow within an interior of the body section from a rear side of the body section towards the nozzle port by being powered by electrical energy from the battery; and a partition wall arranged in such a way as to divide the interior space into a first room and a second room, wherein: the first room is configured to accommodate the battery, and the second room is located outside the first room and is configured so that the airflow can pass through it. [2] Blower according to claim 1, wherein: the partition wall has a connecting opening, and The connecting opening is configured to connect the first room to the second room. [3] Blower according to claim 2, wherein the battery is arranged so that it covers the connection opening. [4] Blower according to claim 2 or claim 3, wherein: the battery has a housing that features: a first opening configured to allow air to flow into the interior of the housing, and a second opening, connected to the first opening and configured to vent air from inside the housing, and The connecting opening and the second opening are arranged so that they are opposite each other when the battery is mounted in the blower. [5] Blower according to any one of claims 2 to 4, wherein the connection opening is configured to be located above the battery when the blower is in operation. [6] Blower according to claim 5, wherein: the battery has a terminal block, and the body section additionally has a battery mounting section configured to: electrically connected to the airflow generation unit, allowing the battery to be removable, and positioned relative to the battery opposite the connection opening and connected to the terminal when the battery is attached to the battery mounting section. [7] Blower according to any one of claims 2 to 4, wherein: the battery has a terminal block the body section additionally has a battery mounting section configured to: electrically connected to the airflow generation unit, allowing the battery to be removable from it, and is positioned relative to the battery on the same side as the connection opening and connected to the terminal when the battery is attached to the battery mounting section. [8] Blower according to any one of claims 1 to 7, wherein: the body section additionally has an air intake opening configured to: is open in a rear wall section of the body segment, and outside air is directed into the second chamber of the body section. [9] Blower according to any one of claims 1 to 8, wherein: the second room forms a space that surrounds the entire perimeter of the first room, and the body section additionally has an air intake opening configured to: is open in a rear wall section of the body segment, and outside air is directed into the second chamber of the body section. [10] Blower according to any one of claims 1 to 9, wherein: the body section additionally has an air intake opening configured to: is open in a rear wall section and a circumferential wall section of the body section, and outside air is directed into the second chamber of the body section. [11] Blower according to any one of claims 1 to 10, wherein: the airflow exhibits: a first airflow that flows through the first room, and a second airflow that flows through the second room. [12] Blower according to claim 11, wherein the body section: additionally features a filter, and is configured to direct the first airflow through the filter into the first room, with the filter being configured to collect objects contained in the first airflow. [13] Blower according to any one of claims 1 to 12, wherein the airflow generating unit is arranged in front of the partition. [14] Blower according to any one of claims 1 to 13, wherein the airflow generation unit is configured to generate the airflow by means of an axial fan. [15] Blower according to claim 14, wherein the first space is configured such that its front is covered by a part of the axial fan.

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