Ducted indoor unit and air conditioner

Abstract

The embodiment of the present application provides a duct type indoor unit and an air conditioner, and relates to the technical field of air conditioner structure. The duct type indoor unit provided by the embodiment of the present application comprises a machine body, a filter screen cleaning structure and a dust collecting box. The machine body is provided with a filter screen, the filter screen cleaning structure is used for cleaning the filter screen, so that the problem of filter screen blockage caused by dust is avoided, and the cleaned dust is collected through the dust collecting box. The dust collecting box has an inlet communicated with the filter screen cleaning structure, a conveying structure is arranged in the dust collecting box, one end of the conveying structure is located at the lower side of the inlet, and the other end extends to the inner side of the dust collecting box, so that the dust entering from the inlet is conveyed to the inner side of the dust collecting box through the conveying structure, the dust is prevented from accumulating at the inlet of the dust collecting box, the space in the dust collecting box can be effectively utilized, and the cleaning frequency of the dust collecting box is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioner structure technology, and more specifically, to a duct-type indoor unit and an air conditioner. Background Technology

[0002] Duct-type indoor units are typically installed on the back of the ceiling. To prevent dust and other contaminants from being drawn into the heat exchanger and causing blockages, or from being blown into the room, a filter is installed on the air intake side of the duct-type indoor unit. However, because the duct-type indoor unit is installed on the back of the ceiling, maintenance is difficult. Therefore, some users may not clean the filter for extended periods. If the filter becomes clogged, it may affect airflow, leading to decreased airflow performance and potentially causing malfunctions.

[0003] To address these issues, a technology has emerged that automatically cleans the filters of duct-type indoor units, storing the cleaned dust in a dust collection box. While this significantly reduces maintenance frequency, the dust collection box still requires regular cleaning, and its cleaning remains challenging due to the installation location of the duct-type indoor unit. Summary of the Invention

[0004] The problem addressed by this invention is how to reduce the cleaning frequency of the dust collection box.

[0005] To address the aforementioned problems, this invention provides a duct-type indoor unit and air conditioner, which can effectively improve the technical issues mentioned above.

[0006] This invention can be implemented as follows:

[0007] An embodiment of the present invention provides a duct-type indoor unit, comprising a body having a filter screen; a filter screen cleaning structure disposed on the body for cleaning the filter screen; and a dust collection box having an inlet communicating with the filter screen cleaning structure for dust swept by the filter screen cleaning structure to enter the dust collection box; wherein, a conveying structure is disposed inside the dust collection box, one end of the conveying structure being located below the inlet, and the other end of the conveying structure extending inward to the dust collection box to convey dust entering the dust collection box from the inlet to the inside of the dust collection box.

[0008] The filter is cleaned via a filter cleaning structure, ensuring its filtration efficiency and preventing clogging. A dust collection box collects the dust removed by the filter cleaning structure. The dust collection box contains a conveyor system; one end of the conveyor is located below the dust collection box inlet, and the other end extends inwards. This allows dust to be transported inwards after falling into the dust collection box, preventing dust accumulation at the inlet. This increases the utilization rate of the dust collection box, ensuring it can hold sufficient dust and thus reducing the frequency of cleaning.

[0009] Optionally, a baffle is provided inside the dust collection box. The baffle is located at the end of the conveying structure away from the inlet, and the baffle is in contact with the conveying structure to remove dust from the conveying structure.

[0010] A baffle is installed inside the dust collection box to contact the conveying structure. The baffle can cause the dust on the conveying structure to detach from the conveying structure, thus ensuring that the dust conveyed by the conveying structure can be stored inside the dust collection box and preventing the dust from being sent back to the inlet end by the conveying structure.

[0011] Optionally, a shield is provided at the inlet, the shield being movably connected to the dust collection box, so that the shield automatically closes the inlet when the dust collection box is detached from the filter cleaning structure. The shield at the inlet of the dust collection box, movably connected to the dust collection box, allows the inlet to be closed when the dust collection box is detached from the machine body, thereby preventing dust from overflowing from the inlet.

[0012] Optionally, the shield is disposed inside the dust collection box; a portion of the filter cleaning structure extends into the dust collection box from the inlet and abuts against the shield, thereby opening the inlet. The shield is located inside the dust collection box, and the portion of the filter cleaning structure extending into the dust collection box abuts against the shield, keeping the inlet open, thus ensuring effective dust collection during the dust collection process.

[0013] Optionally, the filter cleaning structure includes a cleaning brush and a rotating shaft. The cleaning brush is fixedly disposed relative to the machine body, and the filter is wound around the rotating shaft. The rotating shaft is used to drive the filter to move relative to the cleaning brush. The cleaning brush is used to clean the filter when the filter is moving. The inlet is located below the cleaning brush.

[0014] The filter cleaning structure includes a cleaning brush and a rotating shaft. The cleaning brush is fixed relative to the machine body, while the rotating shaft drives the filter to move relative to the cleaning brush. This allows for cleaning of all parts of the filter while the cleaning brush remains stationary. Simultaneously, the dust collection box inlet is located below the cleaning brush. As the cleaning brush cleans the filter, the dust removed falls into the dust collection box through the inlet. Because the cleaning brush is fixed, the dust collection box is also fixed, thus meeting the dust collection requirements without needing to reserve space for its movement, making it possible to increase the volume of the dust collection box.

[0015] Optionally, the filter cleaning structure further includes a mounting shell, which is fixedly connected to the body, and the cleaning brush is installed inside the mounting shell; one side of the mounting shell has a first opening opposite to the filter, and the cleaning brush cleans the filter through the first opening; the lower end of the mounting shell has a second opening, which communicates with the inlet.

[0016] The cleaning brush is installed inside the mounting housing. The cleaning brush cleans the filter screen through the first opening of the mounting housing. At the same time, the lower end of the mounting housing has a second opening that connects to the inlet of the dust collection box. In this way, the dust cleaned can fall directly into the dust collection box through the second opening after entering the mounting housing, ensuring the dust collection effect and preventing the dust brushed off the filter screen from scattering.

[0017] Optionally, the dust collection box is located outside the machine body and is disposed on the lower side of the machine body. By disposing the dust collection box on the lower side of the machine body, its size is not limited by the size of the machine body itself, ensuring that the dust collection box is large enough to hold a sufficient amount of dust, thereby helping to reduce the frequency of cleaning.

[0018] Optionally, the dust collection box is a strip-shaped structure extending along the width direction of the machine body, the inlet is opened at one end of the length direction of the dust collection box, and the conveying structure extends along the length direction of the dust collection box to convey the dust. By setting the dust collection box as a strip-shaped structure extending along the width direction of the machine body, not only is the size of the dust collection box guaranteed, but it is also convenient to disassemble the dust collection box.

[0019] Optionally, the conveying structure includes multiple conveying wheels and multiple thin plates. The multiple thin plates are connected to form a belt structure. The multiple conveying wheels are used to move the belt structure, and the multiple thin plates are used to drive the dust to move synchronously. The conveying structure is configured to convey multiple thin plates through multiple conveying wheels, and the movement of the multiple thin plates drives the movement of the dust, ensuring the effective conveying of dust.

[0020] Embodiments of the present invention also provide an air conditioner, which includes a duct-type indoor unit. The duct-type indoor unit includes: a body having a filter; a filter cleaning structure disposed on the body for cleaning the filter; and a dust collection box having an inlet communicating with the filter cleaning structure for dust swept by the filter cleaning structure to enter the dust collection box; wherein, a conveying structure is disposed inside the dust collection box, one end of the conveying structure being located below the inlet, and the other end of the conveying structure extending inward into the dust collection box to convey dust entering the dust collection box from the inlet to the inward side of the dust collection box.

[0021] Since air conditioners include ducted indoor units, they also have the beneficial effect of ensuring high utilization of the dust collection box and reducing the frequency of cleaning the dust collection box. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a duct-type indoor unit provided in an embodiment of the present invention from a first-view perspective;

[0023] Figure 2 A schematic diagram of the structure of a duct-type indoor unit provided in an embodiment of the present invention from a second perspective;

[0024] Figure 3 A schematic diagram of the structure of the duct-type indoor unit provided for an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a duct-type indoor unit provided in an embodiment of the present invention from a third-person perspective;

[0026] Figure 5 This is a schematic diagram of the structure of a duct-type indoor unit when the dust collection box is detached from the filter cleaning structure, as provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100-Indoor unit with ductwork; 110-Unit body; 111-Filter screen; 112-Air intake; 120-Filter screen cleaning structure; 121-Cleaning brush; 122-First rotating shaft; 123-Second rotating shaft; 124-Mounting housing; 125-First opening; 126-Second opening; 130-Dust collection box; 131-Inlet; 132-Shielding component; 133-Conveying structure; 134-Conveying wheel; 135-Sheet; 136-Baffle. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Figure 1 This is a structural schematic diagram of the duct-type indoor unit 100 provided in this embodiment from a first-view perspective. Figure 2 This is a structural schematic diagram of the duct-type indoor unit 100 provided in this embodiment from a second perspective. Please refer to the reference. Figure 1 and Figure 2 This embodiment provides a duct-type indoor unit 100, and correspondingly, an air conditioner (not shown in the figure) is provided.

[0031] The air conditioner includes a ducted indoor unit 100 and an outdoor unit (not shown in the figure). The ducted indoor unit 100 and the outdoor unit form a circulation path for the flow of heat exchange medium to achieve heat exchange, thereby enabling the ducted indoor unit 100 to cool or heat as needed.

[0032] The ducted indoor unit 100 includes a body 110, a filter cleaning structure 120, and a dust collection box 130. A filter 111 is installed on the body 110 to filter the air at the unit 110, thereby preventing dust from affecting the heat exchanger of the body 110 or from being blown into the room with the airflow, thus affecting indoor air quality. The filter cleaning structure 120 is used to clean the filter 111, thereby preventing dust from clogging the filter 111. The cleaned dust is collected in the dust collection box 130. The dust collection box 130 has an inlet 131 that communicates with the filter cleaning structure 120. A conveying structure 133 is provided inside the dust collection box 130. One end of the conveying structure 133 is located below the inlet 131, and the other end extends into the inside of the dust collection box 130. Thus, the dust entering from the inlet 131 is conveyed to the inside of the dust collection box 130 through the conveying structure 133, avoiding dust accumulation at the inlet 131 of the dust collection box 130. This effectively utilizes the space inside the dust collection box 130 and reduces the cleaning frequency of the dust collection box 130.

[0033] The duct-type indoor unit 100 provided in this embodiment will be further described below:

[0034] Figure 3 This is a structural diagram of the unit body 110 in the duct-type indoor unit 100 provided in this embodiment. Please refer to the diagram for further details. Figures 1-3 In this embodiment, the filter 111 is disposed at the air intake 112 of the body 110, thereby filtering the air before it enters the body 110 to ensure the cleanliness of the air entering the body 110. Correspondingly, the filter cleaning structure 120 and the dust collection box 130 are both disposed at the air intake 112 of the body 110.

[0035] Figure 4 This is a structural schematic diagram of the duct-type indoor unit 100 provided in this embodiment from a third-person perspective. Please refer to the reference. Figures 1-4In this embodiment, the filter cleaning structure 120 includes a cleaning brush 121 and a rotating shaft. The cleaning brush 121 is fixedly disposed relative to the body 110, and the filter 111 is wound around the rotating shaft. The rotating shaft drives the filter 111 to move relative to the cleaning brush 121, thus removing dust from the filter 111 during the relative movement between the filter 111 and the cleaning brush 121. At the same time, the inlet 131 of the dust collection box 130 is located below the cleaning brush 121, and the dust removed by the cleaning brush 121 falls into the dust collection box 130 to collect the dust. Since neither the cleaning brush 121 nor the dust collection box 130 needs to move relative to the body 110, there is no need to provide space for the dust collection box 130 to move. This allows for the design of a dust collection box 130 with a larger capacity. At the same time, since the dust collection box 130 has a conveying structure 133 inside, even with a large volume, the inside of the dust collection box 130 can still effectively store dust, which helps to further reduce the cleaning frequency of the dust collection box 130.

[0036] Furthermore, there are two rotating shafts, namely a first rotating shaft 122 and a second rotating shaft 123, which are spaced apart. The filter screen 111 has a ring-shaped structure and is simultaneously fitted over both the first rotating shaft 122 and the second rotating shaft 123. Thus, the filter screen 111 rotates due to the combined action of the first rotating shaft 122 and the second rotating shaft 123.

[0037] Specifically, the first rotary shaft 122 and the second rotary shaft 123 each have independent drive motors; that is, the first rotary shaft 122 is driven to rotate by the first drive motor, and the second rotary shaft 123 is driven to rotate by the second drive motor. It is understood that in some other embodiments, only one drive motor may be provided as needed, i.e., one of the first rotary shaft 122 and the second rotary shaft 123 serves as the driving shaft, and the other serves as the driven shaft.

[0038] The cleaning brush 121 is positioned on the side of the first rotating shaft 122 away from the second rotating shaft 123, and is close to the first rotating shaft 122. When the filter screen 111 moves to the first rotating shaft 122, the portion there contacts the cleaning brush 121, and under the action of the first and second rotating shafts 122 and 123, moves relative to the cleaning brush 121, thus achieving the cleaning operation of the cleaning brush 121 on the filter screen 111. Specifically, after the machine body 110 stops operating, the first rotating shaft 122 and the second rotating shaft 123 can be driven by a drive motor to rotate for a certain period of time, thereby causing the filter screen 111 to move relative to the cleaning brush 121, and thus the cleaning brush 121 brushes off dust and other debris from the filter screen 111.

[0039] Furthermore, the filter cleaning structure 120 also includes a mounting shell 124, which is fixedly connected to the body 110, and the cleaning brush 121 is installed inside the mounting shell 124. Simultaneously, one side of the mounting shell 124 has a first opening 125 opposite to the filter 111. Through this first opening 125, the cleaning brush 121 cleans the filter 111 outside the mounting shell 124, and the dust that falls off the filter 111 after cleaning enters the mounting shell 124. A second opening 126 is provided at the lower end of the mounting shell 124, which communicates with the inlet 131 of the dust collection box 130. Thus, the dust inside the mounting shell 124 falls directly into the dust collection box 130 through the second opening 126 and the inlet 131, making dust collection more convenient and effective.

[0040] Specifically, the portion of the filter screen 111 that is wound around the first rotating shaft 122 is in an arc shape corresponding to the shape of the first rotating shaft 122, and the first opening 125 of the mounting housing 124 is set to be an arc shape that matches the shape of the first rotating shaft 122, so that the dust on the filter screen 111 brushed off by the cleaning brush 121 is confined within the mounting housing 124.

[0041] Figure 5 This is a schematic diagram of the structure of the duct-type indoor unit 100 provided in this embodiment when the dust collection box 130 is detached from the filter cleaning structure 120. Please refer to the following: Figures 1-5 In this embodiment, a shield 132 is provided at the inlet 131 of the dust collection box 130. The shield 132 is movably connected to the dust collection box 130 so that when the dust collection box 130 is detached from the filter cleaning structure 120, the shield 132 automatically closes the inlet 131. Thus, when the dust collection box 130 is cleaned, it is in a closed state, which can effectively prevent dust in the dust collection box 130 from overflowing from the inlet 131.

[0042] Optionally, the shield 132 is a plate-shaped structure rotatably connected to the dust collection box 130, and it is installed inside the dust collection box 130, and in such a way as Figure 5 From the view shown, rotating the obstruction 132 clockwise will open the entrance 131 (as shown). Figure 2 As shown), in Figure 2 From the view shown, rotating the shield 132 counterclockwise will close the entrance 131 (as shown). Figure 5 (As shown). It is understood that in some other embodiments, the movement mode of the shield 132 relative to the dust collection box 130 can also be set as needed, for example, the shield 132 can be set to slide connection with the dust collection box 130.

[0043] Furthermore, a portion of the filter cleaning structure 120 extends from the inlet 131 into the dust collection box 130 and abuts against the shield 132, keeping the inlet 131 open. Specifically, the lower end of the mounting shell 124 extends into the dust collection box 130 from the inlet 131, so that the lower end of the mounting shell 124 abuts against the shield 132, keeping the inlet 131 open. Thus, when the dust collection box 130 is installed to the lower end of the mounting shell 124, the inlet 131 opens naturally. When the dust collection box 130 is detached from the mounting shell 124, the lower end of the mounting shell 124 is pulled out from the inlet 131, the abutting effect of the lower end of the mounting shell 124 against the shield 132 disappears, and the shield 132 automatically returns to the state of closing the inlet 131.

[0044] Optionally, in this embodiment, since the shield 132 is rotatably connected to the dust collection box 130, the shield 132 can be configured to include a torsion spring. When the dust collection box 130 is installed at the lower end of the mounting shell 124, the lower end of the mounting shell 124 extends into the dust collection box 130, pushing the shield 132 to rotate clockwise, thereby opening the inlet 131. At this time, the torsion spring undergoes elastic deformation. When the lower end of the mounting shell 124 is pulled out from the dust collection box 130, the resisting force exerted by the lower end of the mounting shell 124 on the shield 132 disappears, and the shield 132 automatically rotates counterclockwise to the position that closes the inlet 131 under the action of the elastic restoring force of the torsion spring.

[0045] It should be noted that the structure of the shield 132 automatically closing the inlet 131 is not limited here. It is understood that in some other embodiments, such as in the structure in which the shield 132 is slidably connected to the dust collection box 130, a compression spring can be used to achieve the function of the shield 132 automatically closing the inlet 131 when the dust collection box 130 is separated from the filter cleaning structure 120.

[0046] Please continue to refer to the reference. Figures 1-5 In this embodiment, the dust collection box 130 is located outside the body 110 and is disposed on the lower side of the body 110. In this way, the size of the dust collection box 130 is not limited by the body 110, which facilitates the design of a larger dust collection box 130.

[0047] Furthermore, the dust collection box 130 is located along the width direction of the body 110. Figure 4The dust collection box 130 is a strip-shaped structure extending in the left-right direction. The inlet 131 is opened at one end of the length direction of the dust collection box 130, and the conveying structure 133 is along the length direction of the dust collection box 130 to transport dust. Since the dust collection box 130 is a strip-shaped structure extending along the width direction of the body 110, it not only ensures the size of the dust collection box 130, but also achieves the purpose of transporting dust from the dust collection box 130 to the inside of the dust collection box 130 through the unidirectional conveying of the conveying structure 133, which helps to simplify the structure of the conveying structure 133. At the same time, since the dust collection box 130 and the filter cleaning structure 120 are located at the air intake 112 of the body 110, setting the dust collection box 130 to extend along the width direction of the body 110 not only ensures the appearance consistency of the duct-type indoor unit 100, but also makes it easy to disassemble and assemble the dust collection box 130 because the dust collection box 130 is close to the air intake 112 of the body 110. Optionally, the dust collection box 130 extends from one end of the width direction of the body 110 to the other end of the width direction of the body 110. Specifically, the length of the dust collection box 130 is consistent with the width of the air intake 112 of the body 110.

[0048] In this embodiment, the conveying structure 133 includes multiple conveying wheels 134 and multiple thin plates 135. The multiple thin plates 135 are connected to form a belt-like structure. The multiple conveying wheels 134 are used to drive the belt-like structure formed by the multiple thin plates 135 to move, thereby driving the dust to move synchronously through the multiple thin plates 135, and thus conveying the dust to the inside of the dust collection box 130. Specifically, the multiple conveying wheels 134 are arranged at the bottom of the dust collection box 130 along the length direction of the dust collection box 130, so that the dust is conveyed from one end of the dust collection box 130 corresponding to the inlet 131 to the other end along the length direction of the dust collection box 130 under the action of the multiple thin plates 135. It can be understood that in some other embodiments, the structure of the conveying structure 133 can also be specifically set, for example, the conveying structure 133 can be set to include a conveyor belt, and the multiple thin plates 135 are arranged sequentially and spaced apart on the conveyor belt.

[0049] Furthermore, a baffle 136 is provided inside the dust collection box 130. The baffle 136 is located at the end of the conveying structure 133 away from the inlet 131, and the baffle 136 contacts the conveying structure 133 to detach the dust on the conveying structure 133, thereby preventing the dust from moving back under the action of the conveying structure 133. Specifically, the baffle 136 is provided on the side wall of the dust collection box 130 at the end away from the inlet 131 in the length direction, and the end of the baffle 136 protruding from the side wall is located on the upper side of the conveying structure 133 and contacts the conveying structure 133, so that when the dust moves to the baffle 136, it can detach from the conveying structure 133.

[0050] The duct-type indoor unit 100 and air conditioner provided in the embodiments of the present invention improve the utilization rate of the internal volume of the dust collection box 130 by providing a conveying structure 133 inside the dust collection box 130, so as to convey the dust entering the dust collection box 130 from one end of the inlet 131 to the inside of the dust collection box 130, thereby helping to increase the amount of dust stored in the dust collection box 130 of the same size, reducing the cleaning frequency of the dust collection box 130, and improving the user experience. At the same time, an inlet 131 of the dust collection box 130 is provided with an inlet 132 that can automatically close the inlet 131. When the dust collection box 130 is removed for cleaning, the inlet 132 automatically closes the inlet 131 to prevent the dust in the dust collection box 130 from overflowing.

[0051] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A duct-type indoor unit, characterized in that, include: The body (110) has a filter screen (111). A filter cleaning structure (120) is provided on the body (110) for cleaning the filter (111). as well as A dust collection box (130) has an inlet (131) communicating with the filter cleaning structure (120) so that dust swept by the filter cleaning structure (120) can enter the dust collection box (130). The dust collection box (130) is provided with a conveying structure (133). One end of the conveying structure (133) is located below the inlet (131), and the other end of the conveying structure (133) extends into the dust collection box (130) to convey the dust that enters the dust collection box (130) from the inlet (131) to the inside of the dust collection box (130). The dust collection box (130) is a strip structure extending along the width direction of the body (110), the inlet (131) is opened at one end of the length direction of the dust collection box (130), and the conveying structure (133) extends along the length direction of the dust collection box (130) to convey the dust. The conveying structure (133) includes multiple conveying wheels (134) and multiple thin plates (135). The multiple thin plates (135) are connected to form a belt structure. The multiple conveying wheels (134) are used to convey the movement of the belt structure, and the multiple thin plates (135) are used to drive the dust to move synchronously.

2. The ducted indoor unit according to claim 1, characterized in that, The dust collection box (130) is provided with a baffle (136), which is located at the end of the conveying structure (133) away from the inlet (131) and is in contact with the conveying structure (133) to remove dust from the conveying structure (133).

3. The ducted indoor unit according to claim 1, characterized in that, A shield (132) is provided at the inlet (131). The shield (132) is movably connected to the dust collection box (130) so that when the dust collection box (130) is detached from the filter cleaning structure (120), the shield (132) automatically closes the inlet (131).

4. The ducted indoor unit according to claim 3, characterized in that, The shield (132) is disposed inside the dust collection box (130); a portion of the filter cleaning structure (120) extends into the dust collection box (130) from the inlet (131) and abuts against the shield (132), so that the inlet (131) remains open.

5. The ducted indoor unit according to claim 1, characterized in that, The filter cleaning structure (120) includes a cleaning brush (121) and a rotating shaft. The cleaning brush (121) is fixedly disposed relative to the body (110). The filter (111) is wound around the rotating shaft, and the rotating shaft is used to drive the filter (111) to move relative to the cleaning brush (121). The cleaning brush (121) is used to clean the filter (111) when the filter (111) is moving. The inlet (131) is located below the cleaning brush (121).

6. The ducted indoor unit according to claim 5, characterized in that, The filter cleaning structure (120) further includes a mounting shell (124), which is fixedly connected to the body (110), and the cleaning brush (121) is installed inside the mounting shell (124); one side of the mounting shell (124) has a first opening (125) opposite to the filter (111), and the cleaning brush (121) cleans the filter (111) through the first opening (125); the lower end of the mounting shell (124) has a second opening (126), which communicates with the inlet (131).

7. The ducted indoor unit according to any one of claims 1-6, characterized in that, The dust collection box (130) is located outside the body (110) and is disposed on the lower side of the body (110).

8. An air conditioner, characterized in that, Includes the duct-type indoor unit (100) as described in any one of claims 1-7.

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