US-20260126222-A1 - VERTICAL TYPE COMPRESSOR AND LAUNDRY TREATING APPARATUS HAVING THE SAME

Abstract

A vertical type compressor and a laundry treating apparatus having the same applied thereto according to the present disclosure includes a driving motor, a compression unit, and a casing. In the casing, a cap insertion portion expanded in a radial direction of a rotary shaft such that an opening end of a cap is inserted therein may be formed at an opening end of a middle shell formed in a cylindrical shape, and the opening end of the cap may overlap the driving motor in the radial direction of the rotary shaft. Accordingly, the height of the vertical type compressor is lowered, vibration of the vertical type compressor can be reduced, oil discharge from the compressor can be reduced , an insulation distance between the casing and the driving motor can be secured, and the assemblability of the casing can be ensured.

Inventors

• Mingi Choi
• Sangmo KIM
• Dohyung Kim
• Taeyeong Kim

Assignees

• LG ELECTRONICS INC.

Dates

Publication Date

20260507

Application Date

20250918

Priority Date

20241101

Claims (20)

1. 1 . A vertical type compressor comprising: a driving motor comprising a stator in which a stator coil is wound around a stator core, a rotor rotatably arranged on an inner circumferential side of the stator, and a rotary shaft coupled to the rotor to rotate together with rotor; a compression unit arranged at one side of the driving motor and comprising at least one compression portion which compresses a refrigerant while being operated by a driving force transmitted through the rotary shaft; and a casing comprising a middle shell formed in a cylindrical shape and a cap inserted into an opening end of the middle shell to be coupled to the middle shell, wherein the middle shell comprises: a body portion accommodating the driving motor and the compression unit therein; and a cap insertion portion arranged at one end of the body portion such that the cap is inserted thereinto, and expanded in a radial direction of the rotary shaft.
2. 2 . The vertical type compressor of claim 1 , wherein an opening end of the cap inserted into the cap insertion portion overlaps at least a portion of the driving motor in the radial direction of the rotary shaft.
3. 3 . The vertical type compressor of claim 2 , wherein a radial direction depth from an inner circumferential surface of the body portion to an inner circumferential surface of the cap insertion portion is formed larger than or equal to a thickness of the opening end of the cap inserted into the cap insertion portion.
4. 4 . The vertical type compressor of claim 1 , wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein at least a portion of the insulator overlaps the cap insertion portion in the radial direction of the rotary shaft.
5. 5 . The vertical type compressor of claim 4 , wherein at least a portion of the insulator overlaps the opening end of the cap in the radial direction of the rotary shaft.
6. 6 . The vertical type compressor of claim 4 , wherein a height from an upper end of the stator core facing the cap in the axial direction to an upper end of the insulator is formed higher than or equal to a height from the upper end of the stator core to a lower end of the cap insertion portion and/or a height from the upper end of the stator core to the opening end of the cap inserted into the cap insertion portion.
7. 7 . The vertical type compressor of claim 1 , wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein an outer circumferential surface of the insulator is spaced apart from an inner circumferential surface of the opening end of the cap inserted into the cap insertion portion by a predetermined gap.
8. 8 . The vertical type compressor of claim 7 , wherein an inner diameter of the opening end of the cap inserted into the cap insertion portion is formed larger than an outer diameter of the insulator.
9. 9 . The vertical type compressor of claim 1 , wherein the cap comprises: a cover portion covering the opening end of the middle shell; and an insertion portion extending from the cover portion to be inserted into the opening end of the middle shell, wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein a maximum axial direction gap between the insulator and an inner circumferential surface of the cover portion of the cap facing the insulator is formed smaller than or equal to a height from an upper end of the stator core and an upper end of the insulator.
10. 10 . The vertical type compressor of claim 1 , wherein the middle shell has both open ends in an axial direction, a first cap and a second cap are respectively inserted into both the ends of the middle shell in the axial direction to be coupled to the middle shell, and a refrigerant discharge pipe is coupled to the first cap to communicate with an internal space of the casing, and wherein an inner diameter of the first cap is formed larger than an inner diameter of the second cap.
11. 11 . The vertical type compressor of claim 10 , wherein the first cap is located upwardly of the second cap with respect to an installation surface.
12. 12 . A laundry treating apparatus comprising: a cabinet; a drum rotatably arranged inside the cabinet to accommodate clothing and having heated air provided thereto to dry the accommodated clothing; and a compressor located between a bottom surface of the cabinet and the drum on the bottom surface of the cabinet, wherein the compress or comprising: a driving motor comprising a stator in which a stator coil is wound around a stator core, a rotor rotatably arranged on an inner circumferential side of the stator, and a rotary shaft coupled to the rotor to rotate together with rotor; a compression unit arranged at one side of the driving motor and comprising at least one compression portion which compresses a refrigerant while being operated by a driving force transmitted through the rotary shaft; and a casing comprising a middle shell formed in a cylindrical shape and a cap inserted into an opening end of the middle shell to be coupled to the middle shell, wherein the middle shell comprises: a body portion accommodating the driving motor and the compression unit therein; and a cap insertion portion arranged at one end of the body portion such that the cap is inserted thereinto, and expanded in a radial direction of the rotary shaft.
13. 13 . The laundry treating apparatus of claim 12 , wherein an opening end of the cap inserted into the cap insertion portion overlaps at least a portion of the driving motor in the radial direction of the rotary shaft.
14. 14 . The laundry treating apparatus of claim 13 , wherein a radial direction depth from an inner circumferential surface of the body portion to an inner circumferential surface of the cap insertion portion is formed larger than or equal to a thickness of the opening end of the cap inserted into the cap insertion portion.
15. 15 . The laundry treating apparatus of claim 12 , wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein at least a portion of the insulator overlaps the cap insertion portion in the radial direction of the rotary shaft.
16. 16 . The laundry treating apparatus of claim 15 , wherein at least a portion of the insulator overlaps the opening end of the cap in the radial direction of the rotary shaft, and wherein a height from an upper end of the stator core facing the cap in the axial direction to an upper end of the insulator is formed higher than or equal to a height from the upper end of the stator core to a lower end of the cap insertion portion and/or a height from the upper end of the stator core to the opening end of the cap inserted into the cap insertion portion.
17. 17 . The laundry treating apparatus of claim 12 , wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein an outer circumferential surface of the insulator is spaced apart from an inner circumferential surface of the opening end of the cap inserted into the cap insertion portion by a predetermined gap.
18. 18 . The laundry treating apparatus of claim 12 , wherein the cap comprises: a cover portion covering the opening end of the middle shell; and an insertion portion extending from the cover portion to be inserted into the opening end of the middle shell, wherein an insulator is located between the stator core facing the cap and the stator coil on a section of the stator core in an axial direction, and wherein a maximum axial direction gap between the insulator and an inner circumferential surface of the cover portion of the cap facing the insulator is formed smaller than or equal to a height from an upper end of the stator core and an upper end of the insulator.
19. 19 . The laundry treating apparatus of claim 12 , wherein the middle shell has both open ends in an axial direction, a first cap and a second cap are respectively inserted into both the ends of the middle shell in the axial direction to be coupled to the middle shell, and a refrigerant discharge pipe is coupled to the first cap to communicate with an internal space of the casing, and wherein an inner diameter of the first cap is formed larger than an inner diameter of the second cap.
20. 20 . The laundry treating apparatus of claim 12 , wherein the vertical type compressor comprises a first compression portion and a second compression portion, each of which has a compression space, wherein a first eccentric portion constituting the first compression portion and a second eccentric portion constituting the second compression portion are formed along an axial direction on the rotary shaft, and wherein the first eccentric portion and the second eccentric portion are formed with a phase difference of 180 degrees.

Description

CROSS-REFERENCE TO RELATED APPLICATION Pursuant to 35 U.S.C. § 119(a), this application claims the benefit of the earlier filing date and the right of priority to Korean Patent Application No. 10-2024-0153701, filed on November 1, 2024, the contents of which are incorporated by reference herein in their entirety. BACKGROUND 1. Field This disclosure relates to a vertical type compressor and a laundry treating apparatus having the same. 2. Description of the Related Art A laundry treating apparatus refers to all apparatuses for managing or treating clothing, such as washing or drying clothing, bedding or the like, or removing wrinkles of clothing at home or in a laundry. The laundry treating apparatus may include a washing machine, a dryer, a washing machine/dryer (hereinafter, referred to as a washing/drying machine), and the like. A dryer and/or a washing/drying machine supplies hot air to an object to be treated, such as clothing or bedding, which is put into a drum (or tub), thereby evaporating moisture contained in the object to be treated. In other words, the air which evaporates the moisture of the object to be treated in the drum and escapes from the drum contains the moisture of the object to be treated and hence is in a hot and humid state. The dryer and/or the washing/drying machine may be classified into a condensing type and an exhaust type depending on a method of treating the hot and humid air. For example, the condensing type dryer does not discharge hot and humid air to outside but condenses moisture contained in the hot and humid air through heat exchange while circulating the air. In contrast, the exhaust type dryer directly discharges hot and humid air to outside. The condensing type dryer and the exhaust type dryer are structurally different from each other in that the condensing type dryer has a structure for treating condensate water and the exhaust type dryer has a structure for exhausting air. This is equally applied to the condensing type washing/drying machine. The condensing type dryer and/or the condensing type washing/drying machine (hereinafter, the condensing type dryer is described as a representative example) performs a process of removing moisture through heat exchange from air discharged from a drum. Accordingly, the condensing type dryer (hereinafter, abbreviated as a dryer) includes a compressor for compressing a refrigerant necessary for a heat exchange process. Conventionally, as a compressor was installed at an upper side of a cabinet of a dryer, i.e., upwardly of a drum, a horizontal type compressor was frequently applied by considering limitation of spaces. However, in the case of the horizontal type compressor, it is not easy to stably fix the compressor to the cabinet, and the reliability of products may be deteriorated as vibrations of the compressor and the dryer are further increased. Therefore, an example, such as Patent Document 1 (Korean Registered Patent No. 10-1982533), in which a vertical type compressor is installed at a lower side of a cabinet of a dryer, i.e., a bottom surface of the cabinet, has recently been introduced. However, in this case, there is a problem that the height of the dryer should be raised by considering the height of the vertical type compressor or that the height of the vertical type compressor should be lower so as to lower the height of the dryer. In the case of the former, as the height of the dryer is raised with respect to the same capacity, manufacturing cost may be increased, and an increase in required installation space may be caused. On the other hand, in the case of the latter, it may be difficult to secure an insulation distance between a casing and a driving motor of the compressor, and the cooling power and/or reliability of the compressor may be deteriorated as a discharge space in the casing is decreased and hence oil discharge is increased. This may become more serious particularly when a twin rotary compressor (hereinafter, referred to as a twin type rotary compressor) is applied. In a conventional twin type rotary compressor, such as Patent Document 2 (Korean Registered Patent No. 10-2336280), a first compression portion and a second compression portion are arranged along an axial direction, and may be formed to have a phase difference of 180 degrees. In the twin type rotary compressor, vibrations generated in both the compression portions are cancelled, so that the entire vibration of the compressor can be considerably reduced. Accordingly, compressor vibration in the dryer in which the compressor frequently performs a low speed operation, is considerably reduced, thereby reducing the vibration of the dryer. However, in the case of the twin type rotary compressor, as the first compression portion and the second compression portion are arranged along the axial direction as described above, the height of the compressor is raised while the total height of the compression portions is raised to that extent. Therefore,