Cylinder of clothes care device and clothes care device

Abstract

The utility model discloses a barrel of a clothes care device and the clothes care device. The barrel comprises an inner barrel, an outer barrel and a water quality sensor installed on the side wall of the bottom of the outer barrel. Wherein the water quality sensor comprises a detection end, and the detection end extends towards the outer peripheral surface of the inner cylinder; when the inner cylinder rotates, water flow moves in the rotating direction of the inner cylinder so as to wash the detection end. Self-cleaning of the water quality sensor can be achieved, the problem that an existing water quality sensor cannot be detached and washed is solved, and the situation that the precision of the water quality sensor is reduced due to long-term use is effectively avoided; the clothes care effect is optimized, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of clothing care devices, specifically to a cylinder of a clothing care device and a clothing care device. Background Technology

[0002] Currently, washing machines often use independent stain index sensors to detect the stain index of the wash water during the washing process. The sensor determines whether the washed items have been cleaned based on the stain index of the wash water. The stain index reflects the content of soluble and insoluble pollutants in the water. Therefore, the value of the stain index is usually used to determine whether the items have been cleaned, and then the washing program is controlled accordingly.

[0003] Existing stain index sensors are generally installed in the water outlet of the outer drum or in the water pipe of the washing machine. However, after long-term use, the sensor itself may become contaminated, affecting subsequent use. Furthermore, the installation position of the outer drum and pipe may make it difficult to disassemble and clean the sensor, affecting the garment care effect and reducing the user experience.

[0004] Therefore, it is necessary to provide a new approach to solve the aforementioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cylinder for a garment care device that enables the self-cleaning of water quality sensors, solving the problem that existing water quality sensors cannot be disassembled and washed, effectively preventing the decline in water quality sensor accuracy due to long-term use; optimizing garment care effects and improving the user experience.

[0006] The present utility model discloses the following embodiments:

[0007] The primary objective of this invention is to provide a cylindrical body for a garment care device, comprising:

[0008] An inner cylinder, an outer cylinder, and a water quality sensor installed on the bottom sidewall of the outer cylinder; wherein...

[0009] The water quality sensor includes a detection end that extends toward the outer circumferential surface of the inner cylinder.

[0010] When the inner cylinder rotates, the water flows along the direction of rotation of the inner cylinder to rinse the detection end.

[0011] Preferably, the water quality sensor is installed at an angle.

[0012] Preferably, the angle between the installation direction of the water quality sensor and the horizontal plane is 15°-45°.

[0013] Preferably, the extension direction of the detection end is the tangential direction of the outer circumferential surface of the inner cylinder.

[0014] Preferably, the detection end includes a transmitting part and a receiving part, and a detection space is formed between the transmitting part and the receiving part. The water flow moves along the rotation direction of the inner cylinder to wash the detection space.

[0015] Preferably, the angle between the detection path between the transmitting part and the receiving part and the axis of the inner cylinder is less than 90 degrees.

[0016] Preferably, the detection path between the transmitting part and the receiving part is parallel to the axis of the inner cylinder.

[0017] Preferably, the water quality sensor is detachably connected to the outer cylinder.

[0018] Preferably, the connection between the water quality sensor and the outer cylinder includes a threaded connection or a snap-fit ​​connection.

[0019] Preferably, the bottom of the outer cylinder protrudes outward to form a chamber, and the water quality sensor is installed on the side of the chamber.

[0020] Preferably, a mounting hole is formed on the side of the chamber, and the water quality sensor is installed to the outer cylinder through the mounting hole.

[0021] Preferably, the water quality sensor includes a turbidity sensor or a TOC sensor or a sensor that includes a combined turbidity and TOC index.

[0022] The second objective of this invention is to provide a cylindrical body for a garment care device, comprising:

[0023] Inner cylinder;

[0024] The outer cylinder has a drain outlet at its bottom.

[0025] A water quality sensor is installed on the bottom side wall of the outer cylinder; the water quality sensor includes a detection end, which includes a transmitter and a receiver, and a detection space is formed between the transmitter and the receiver;

[0026] When the drain outlet drains water, the water flows towards the drain outlet to flush the detection space.

[0027] Preferably, the angle between the detection path between the transmitting part and the receiving part and the axis of the cylinder is less than 90 degrees.

[0028] Preferably, the detection path between the transmitting part and the receiving part is parallel to the axis of the cylinder.

[0029] Preferably, the drain outlet is located at the bottom of the outer cylinder near the front end.

[0030] Preferably, the drain outlet is located close to the water quality sensor.

[0031] Preferably, the drain outlet is located below the detection space.

[0032] The third objective of this invention is to provide a garment care device, including the cylindrical body of the garment care device as described above.

[0033] Compared with the prior art, the beneficial effects of the embodiments of this utility model are as follows:

[0034] 1. This utility model installs a water quality sensor on the bottom side wall of the outer drum so that the water quality sensor can fully contact the washing water inside the drum, effectively obtain the stain index value of the washing water, and objectively display the degree of cleaning in the washing process, thus providing the possibility for efficient washing.

[0035] 2. This utility model achieves self-cleaning of the water quality sensor by tilting the water quality sensor so that the water flow driven by the rotation of the inner drum can rinse the water quality sensor in the direction of rotation. This solves the problem that existing water quality sensors cannot be disassembled and washed, effectively avoiding the decrease in water quality sensor accuracy due to long-term use; it also optimizes the clothing care effect and improves the user experience.

[0036] 3. This utility model utilizes the flushing of the water quality sensor's detection space by the drainage water flow to achieve self-cleaning of the water quality sensor, solving the problem that existing water quality sensors cannot be disassembled and cleaned, and effectively avoiding the decrease in water quality sensor accuracy due to long-term use.

[0037] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention, but do not constitute an undue limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the assembly of the water quality sensor and the outer cylinder in an embodiment of this utility model. Figure 1 ;

[0040] Figure 2 This is a schematic diagram of the assembly of the water quality sensor and the outer cylinder in an embodiment of this utility model. Figure 2 ;

[0041] Figure 3This is a schematic diagram of the assembly of the water quality sensor and the outer cylinder in an embodiment of this utility model. Figure 3 ;

[0042] Figure 4 This is a schematic diagram showing the installation angle of the water quality sensor in an embodiment of this utility model;

[0043] Figure 5 This is a schematic diagram of the assembly of the water quality sensor and the mounting hole in an embodiment of this utility model;

[0044] Figure 6 This is a schematic diagram of the structure of the water quality sensor in an embodiment of this utility model;

[0045] Figure 7 This is a diagram showing the relationship between the detection path of the water quality sensor and the axis of the cylinder in an embodiment of this utility model.

[0046] Figure 8 This diagram illustrates the arrangement of the water quality sensor and the drain outlet in an embodiment of this utility model. Figure 1 ;

[0047] Figure 9 This diagram illustrates the arrangement of the water quality sensor and the drain outlet in an embodiment of this utility model. Figure 2 .

[0048] In the picture: 1. Clothing care device;

[0049] 10. Inner cylinder; 11. Outer circumference; 20. Outer cylinder; 21. Chamber; 211. Chamber side; 212. Mounting hole; 22. Drain outlet; 30. Water quality sensor; 31. Detection end; 311. Detection space; 32. Connecting part; 321. Protrusion; 322. Protruding ring; 33. Cover; 331. Electrical connection port. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0051] In the accompanying drawings, shapes and dimensions may be enlarged for clarity, and the same reference numerals will be used in all figures to indicate the same or similar parts.

[0052] In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, and lower are defined relative to the structure shown in the accompanying drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These are relative concepts and may vary depending on their location and usage. Therefore, these or other orientations should not be interpreted as restrictive terms.

[0053] Terms involving attachment, connection, etc. (e.g., “connection” and “attachment”) refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through an intermediate structure, as well as movable or rigid attachments or relationships, unless otherwise explicitly stated.

[0054] Example 1

[0055] This utility model embodiment provides a cylindrical body for a garment care device 1, combined with... Figures 1-7 As shown, it includes:

[0056] Inner cylinder 10, outer cylinder 20, and water quality sensor 30 installed on the bottom sidewall of the outer cylinder 20; wherein,

[0057] The water quality sensor 30 includes a detection end 31, which extends toward the outer peripheral surface 11 of the inner cylinder 10.

[0058] When the inner cylinder 10 rotates, the water flow moves along the rotation direction of the inner cylinder 10 to rinse the detection end 31, thereby realizing the self-cleaning of the water quality sensor 30.

[0059] The water quality sensor 30 includes a turbidity sensor, a TOC sensor, or a sensor containing a combined turbidity and TOC index, used to sense the dissolved substances, impurities, and stains in the washing water and feed them back to the main control board of the garment care device 1.

[0060] In this embodiment, the water quality sensor 30 is installed on the bottom side wall of the outer drum 20 so that the water quality sensor 30 can fully contact the washing water in the drum and effectively obtain the stain index value of the washing water to objectively display the degree of cleaning in the washing process, thus providing the possibility for efficient washing.

[0061] In some embodiments, the water quality sensor 30 is installed at an angle. By installing the water quality sensor 30 at an angle, the water flow driven by the rotation of the inner cylinder 10 can rinse the water quality sensor 30 in the direction of rotation, thereby achieving self-cleaning of the water quality sensor 30. This solves the problem that existing water quality sensors 30 cannot be disassembled for washing, effectively avoids the decrease in the accuracy of the water quality sensor 30 due to long-term use, optimizes the clothing care effect, and improves the user experience.

[0062] Furthermore, combined Figure 3 and Figure 4 As shown, the angle α between the installation direction of the water quality sensor 30 and the horizontal plane is 15°-45°; further, the angle between the installation direction of the water quality sensor 30 and the horizontal plane is 20°; so that when the inner cylinder 10 rotates and drives the water flow, a large amount of water flow can contact and wash the detection end 31 of the water quality sensor 30, thereby optimizing the self-cleaning efficiency.

[0063] In some preferred embodiments, such as Figure 4 As shown, the extension direction of the detection end 31 is the tangential direction of the outer peripheral surface 11 of the inner cylinder 10; when the water flows along the tangential direction of the rotation direction of the inner cylinder 10, it can accurately rinse the detection end 31 of the water quality sensor 30 to improve the self-cleaning effect.

[0064] In some embodiments, combined with Figures 5-7 As shown, the detection end 31 includes a transmitting part and a receiving part, and a detection space 311 is formed between the transmitting part and the receiving part. The water flow moves along the rotation direction of the inner cylinder 10 to wash the detection space 311.

[0065] In some preferred embodiments, the angle between the detection path between the transmitting part and the receiving part and the axis of the inner cylinder 10 is less than 90 degrees, that is, the detection path is set to be non-perpendicular to the axis of the inner cylinder 10, so as to ensure that the water flow can smoothly reach the detection space 311 and avoid the formation of cleaning dead corners due to obstruction, thereby reducing the self-cleaning effect of the water quality sensor 30.

[0066] In some other preferred embodiments, combined with Figure 6 and Figure 7 As shown, Figure 6 The middle arrow indicates the detection path, such as... Figure 7 As shown, the detection path between the transmitting part and the receiving part is parallel to the axis of the inner cylinder 10; specifically, the detection space 311 has an open structure, and the open structure faces the outer peripheral surface 11 of the inner cylinder 10. In this way, the water flowing along the rotation direction of the inner cylinder 10 can directly flush into the detection space 311, thereby more efficiently removing the stains and deposits on the detection end 31 and improving the self-cleaning effect.

[0067] In some embodiments, the water quality sensor 30 and the outer cylinder 20 are detachably installed. This facilitates future replacement, maintenance, and upgrades. Furthermore, when the water quality sensor 30 has been used for a long time and its self-cleaning effect is limited, it can be disassembled from the outer cylinder 20 for cleaning. In some optional embodiments, the water quality sensor 30 and the outer cylinder 20 are connected by a threaded connection, which is simple, reliable, and has good stability. In still other optional embodiments, the water quality sensor 30 and the outer cylinder 20 are connected by a snap-fit ​​connection, which is convenient, quick, and easy to operate. Further, a sealing structure is formed between the water quality sensor 30 and the outer cylinder 20; preferably, the water quality sensor 30 and the outer cylinder 20 are sealed by a sealing ring.

[0068] In some other embodiments, the water quality sensor 30 and the outer cylinder 20 are connected by adhesive sealing, that is, the water quality sensor 30 and the mounting hole 212 of the outer cylinder 20 are bonded and sealed with glue; this assembly structure has good stability and can ensure sealing performance, without the need for additional sealing structure.

[0069] In some embodiments, combined with Figures 3-5 As shown, the bottom of the outer drum 20 protrudes outward to form a chamber 21, and the water quality sensor 30 is installed on the side of the chamber 211; specifically, the chamber 21 is located at the lowest point of the outer drum 20 to form the water-holding area of ​​the garment care device 1, that is, during the washing process, the washing water will flow into the chamber 21 to fully contact the water quality sensor 30, effectively improving the accuracy of the detection results; wherein, combined with Figure 2 and Figure 5 As shown, the chamber side 211 is located below the outer peripheral surface 11 of the inner cylinder 10 and the chamber side 211 is an inclined surface. When the water quality sensor 30 is installed on the chamber side 211, the water quality sensor 30 is inclined.

[0070] Furthermore, a mounting hole 212 is formed on the side portion 211 of the chamber, through which the water quality sensor 30 is mounted to the outer cylinder 20. Specifically, the water quality sensor 30 includes a connecting portion 32, one end of which is formed with a detection end 31. When the connecting portion 32 is assembled with the mounting hole 212, the detection end 31 extends into the space between the outer cylinder 20 and the inner cylinder 10, i.e., the chamber 21, through the mounting hole 212. A sealing structure is formed between the connecting portion 32 and the mounting hole 212. In some embodiments, a plurality of annular protrusions 321 are formed on the side wall of the connecting portion 32 to fit tightly against the wall of the mounting hole 212, thereby achieving a sealing effect.

[0071] Furthermore, a protruding ring 322 is formed on the side wall of the connecting part 32, and the protruding ring 322 abuts against the end face of the mounting hole 212 to form the installation limiting structure of the water quality sensor 30.

[0072] In some embodiments, combined with Figure 5 and Figure 6 As shown, the end of the water quality sensor 30 away from the detection end 31 also includes a cover 33. The surface of the cover 33 has an electrical connection port 331 for connecting to an external power source and signal. Specifically, the other end of the connecting part 32 is also provided with a cover 33. The cover 33 can be manufactured as an integral part with the connecting part 32, or it can be detachably connected to the connecting part 32.

[0073] Example 2

[0074] This utility model embodiment provides a cylindrical body for a garment care device, combined with... Figures 6-9 As shown, it includes:

[0075] Inner cylinder 10;

[0076] Outer cylinder 20, with a drain outlet 22 formed at its bottom;

[0077] A water quality sensor 30 is installed on the bottom side wall of the outer cylinder 20; the water quality sensor 30 includes a detection end 31, the detection end 31 includes a transmitting part and a receiving part, and a detection space 311 is formed between the transmitting part and the receiving part.

[0078] When the drain outlet 22 drains water, the water flows towards the drain outlet 22 to wash away the dirt in the detection space 311, thereby achieving self-cleaning of the water quality sensor 30.

[0079] The water quality sensor 30 includes a turbidity sensor, a TOC sensor, or a sensor containing a combined turbidity and TOC index. It is used to sense the dissolved substances, impurities, and stains in the washing water and feed them back to the main control board of the garment care device 1 to achieve water quality monitoring and assessment. Specifically, turbidity and TOC are both important parameters of water quality. They can be used alone or in combination to assess water quality. For example, turbidity can reflect the content of suspended solids in water, while TOC can reflect the total amount of organic matter in water. In some cases, the combined use of turbidity and TOC can provide more comprehensive water quality information, especially when assessing the degree of organic pollution in water bodies.

[0080] In this embodiment, the water quality sensor 30 is installed on the bottom side wall of the outer drum 20 so that the water quality sensor 30 can fully contact the washing water in the drum and effectively obtain the stain index value of the washing water to objectively display the degree of cleaning in the washing process, thus providing the possibility for efficient washing.

[0081] Furthermore, in this embodiment, the water quality sensor 30 is self-cleaned by flushing the detection space 311 of the water quality sensor 30 with the drainage water flow, which solves the problem that the existing water quality sensor 30 cannot be disassembled and washed, effectively avoiding the decrease in the accuracy of the water quality sensor 30 due to long-term use; optimizing the clothing care effect and improving the user experience.

[0082] In some preferred embodiments, the angle between the detection path between the transmitter and the receiver and the axis of the cylinder is less than 90 degrees, that is, the detection path is set to be non-perpendicular to the axis of the cylinder to ensure that the water flow can smoothly reach the detection space 311 and avoid dead corners in cleaning due to obstruction, which would reduce the self-cleaning effect of the water quality sensor 30.

[0083] In some other preferred embodiments, combined with Figure 6 and Figure 7 As shown, where, Figure 6 The middle arrow indicates the detection path, such as... Figure 7 As shown, the detection path between the transmitting part and the receiving part is parallel to the axis of the cylinder. Specifically, the detection space 311 has an open structure facing the outer peripheral surface 11 of the inner cylinder 10. In this way, the water flowing along the rotation direction of the inner cylinder 10 can directly flush into the detection space 311, thereby more efficiently removing the stains and deposits on the detection end 31 and improving the self-cleaning effect.

[0084] In some embodiments, such as Figure 8 As shown, the drain outlet 22 is located at the bottom of the outer cylinder 20 near the front end; wherein, Figure 8 The middle arrow indicates the direction of water flow. Specifically, when draining, a large amount of washing water gathers at the bottom of the outer drum 20 and then flows to the drain outlet 22 located at the front end of the bottom of the outer drum 20. The water quality sensor 30 located on the drain path can be continuously flushed by the water flow during this process, thereby achieving self-cleaning.

[0085] In some other embodiments, such as Figure 9 As shown, the drain outlet 22 is positioned close to the water quality sensor 30, allowing dirt washed away by the drainage water to be quickly discharged from the drain outlet 22, preventing contamination of the rest of the washing environment; furthermore, the drain outlet 22 is located below the detection space 311, combined with... Figure 9The direction of water flow indicated by the middle arrow allows for a stronger impact force in the drainage process, thereby enhancing the self-cleaning effect. Furthermore, the drain outlet 22 can be connected to a rinsing device to rinse the water quality sensor 30 before each washing cycle. In this case, the drain outlet 22 becomes the rinsing port for the detection end 31 of the water quality sensor 30, further improving the self-cleaning effect. After the self-cleaning of the water quality sensor 30 is complete, it can be calibrated using clean tap water from the outer cylinder 20, which improves the accuracy and reliability of the detection results.

[0086] Example 3

[0087] This utility model embodiment also provides a garment care device 1, combined with... Figures 1-9 As shown, the device includes a drum body as described in Embodiment 1 or Embodiment 2. In some embodiments, the garment care device 1 can be used as a washing machine, and in other embodiments, it can be used as a washer-dryer combo.

[0088] In this embodiment, the water quality sensor 30 is installed on the bottom side wall of the outer drum 20 so that the water quality sensor 30 can fully contact the washing water in the drum and effectively obtain the stain index value of the washing water to objectively display the degree of cleaning in the washing process, thus providing the possibility for efficient washing.

[0089] This embodiment can achieve self-cleaning of the water quality sensor 30 by tilting the water quality sensor 30 so that the water flow driven by the rotation of the inner cylinder 10 can rinse the water quality sensor 30 along the tangential direction of the rotation direction. This solves the problem that the existing water quality sensor 30 cannot be disassembled and washed, effectively avoids the decrease in the accuracy of the water quality sensor 30 due to long-term use, optimizes the clothing care effect, and improves the user experience.

[0090] This embodiment can also utilize the drainage flow to flush the detection space of the water quality sensor, thereby achieving self-cleaning of the water quality sensor. This solves the problem that existing water quality sensors cannot be disassembled and cleaned, and effectively avoids the decrease in the accuracy of the water quality sensor due to long-term use.

[0091] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cylindrical body for a garment care device, characterized in that, include: An inner cylinder, an outer cylinder, and a water quality sensor installed on the bottom sidewall of the outer cylinder; wherein... The water quality sensor includes a detection end that extends toward the outer circumferential surface of the inner cylinder. When the inner cylinder rotates, the water flows along the direction of rotation of the inner cylinder to rinse the detection end.

2. The cylinder of the garment care device as described in claim 1, characterized in that: The water quality sensor is installed at an angle.

3. The cylinder of the garment care device as described in claim 2, characterized in that: The angle between the installation direction of the water quality sensor and the horizontal plane is 15°-45°.

4. The cylinder of the garment care device as described in any one of claims 1-3, characterized in that: The extension direction of the detection end is the tangential direction of the outer circumferential surface of the inner cylinder.

5. The cylinder of the garment care device as described in claim 1, characterized in that: The detection end includes a transmitter and a receiver, and a detection space is formed between the transmitter and the receiver. Water flows along the rotation direction of the inner cylinder to wash the detection space.

6. The cylinder of the garment care device as described in claim 5, characterized in that: The angle between the detection path between the transmitter and the receiver and the axis of the inner cylinder is less than 90 degrees.

7. The cylinder of the garment care device as described in claim 5, characterized in that: The detection path between the transmitting unit and the receiving unit is parallel to the axis of the inner cylinder.

8. The cylinder of the garment care device as described in claim 1, characterized in that: The water quality sensor is detachably connected to the outer cylinder.

9. The cylinder of the garment care device as described in claim 8, characterized in that: The water quality sensor is connected to the outer cylinder by either a threaded connection or a snap-fit ​​connection.

10. The cylinder of the garment care device as claimed in claim 1, characterized in that: The bottom of the outer cylinder protrudes outward to form a chamber, and the water quality sensor is installed on the side of the chamber.

11. The cylinder of the garment care device as described in claim 10, characterized in that: The side of the chamber has a mounting hole, through which the water quality sensor is mounted to the outer cylinder.

12. The cylinder of the garment care device as described in claim 1, characterized in that: The water quality sensor includes a turbidity sensor, a TOC sensor, or a sensor that includes a combined turbidity and TOC index.

13. A cylindrical body of a garment care device, characterized in that, include: Inner cylinder; The outer cylinder has a drain outlet at its bottom. A water quality sensor is installed on the bottom side wall of the outer cylinder; the water quality sensor includes a detection end, which includes a transmitter and a receiver, and a detection space is formed between the transmitter and the receiver; When the drain outlet drains water, the water flows towards the drain outlet to flush the detection space.

14. The cylinder of the garment care device as described in claim 13, characterized in that: The angle between the detection path between the transmitter and the receiver and the axis of the cylinder is less than 90 degrees.

15. The cylinder of the garment care device as described in claim 13, characterized in that: The detection path between the transmitter and the receiver is parallel to the axis of the cylinder.

16. The cylinder of the garment care device as described in claim 13, characterized in that: The drain outlet is located at the bottom of the outer cylinder near the front end.

17. The cylinder of the garment care device as described in claim 13, characterized in that: The drain outlet is located near the water quality sensor.

18. The cylinder of the garment care device as claimed in claim 17, characterized in that: The drain outlet is located below the detection space.

19. A garment care device, characterized in that, Includes the cylinder of the garment care device as described in any one of claims 1-12 or 13-18.

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