Vertical compressor and laundry treating apparatus including same

Abstract

The present invention relates to a vertical compressor and a laundry treating apparatus including the same, a vertical compressor driving motor including: a stator having a stator coil wound around a stator core, a rotor rotatably provided on an inner circumferential side of the stator, and a rotating shaft coupled to the rotor and rotating with the rotor; a compression unit provided on one side of the driving motor and provided with at least one compression part that operates under the action of the driving force transmitted through the rotating shaft and compresses the refrigerant; and a housing having an intermediate housing formed in a barrel shape and a cover inserted and coupled to an open end of the intermediate housing. The intermediate housing includes: a main body portion accommodating the drive motor and the compression unit; and a cap insertion part which is provided at one end of the main body part, into which the cap body is inserted, and which expands the tube in the radial direction of the rotating shaft. Thus, the height of the vertical compressor can be reduced, the space required for mounting the vertical compressor can be minimized, and the vibration of the vertical compressor can be reduced.

Description

Technical Field

[0001] The present invention relates to a vertical compressor and a garment processing apparatus including the vertical compressor. Background Technology

[0002] A garment handling device refers to any device used in a home or laundromat to manage or process clothing, including bedding, by washing, drying, or wrinkle removal. Garment handling devices can include washing machines, dryers, and washer-dryer combos (hereinafter, washer-dryer combos).

[0003] Dryers and / or washer-dryer combos evaporate moisture contained in clothing or bedding by supplying hot air to the items being dried, such as clothes or bedding, placed inside the drum (or outer tub). In other words, after the moisture in the items evaporates inside the drum, the air leaving the drum contains the moisture from the items, creating a hot and humid environment. Depending on how this hot and humid air is handled, dryers and / or washer-dryer combos can be classified as condenser-type or vented-type.

[0004] For example, a condenser dryer does not vent hot, humid air to the outside; instead, it circulates the air and condenses the moisture it contains through heat exchange. In contrast, a vented dryer directly vents hot, humid air to the outside. The structural difference between condenser and vented dryers lies in their design: condenser dryers have a structure for handling condensate, while vented dryers have a structure for venting the air. This also applies to condenser washer-dryer combos.

[0005] Condenser dryers and / or condenser washer-dryer combos (hereinafter, condenser dryers will be used as an example) perform the process of removing moisture by heat exchange with the air discharged from the drum. Therefore, a compressor for compressing the refrigerant required for the heat exchange process is provided in the condenser dryer (hereinafter, simply the dryer).

[0006] In existing technology, because the compressor is located on the upper side of the dryer housing—in other words, above the drum—horizontal compressors are mainly used due to space constraints. However, with horizontal compressors, it is not only difficult to stably fix the compressor within the housing, but the compressor and dryer also vibrate more, leading to decreased product reliability.

[0007] Consequently, in recent years, as described in Patent Document 1 (Korean Patent No. 10-1982533), an example has been proposed in which a vertical compressor is installed on the lower side of the dryer housing, in other words, on the bottom surface of the housing. However, in this case, the following problems exist: considering the height of the vertical compressor, the height of the dryer needs to be increased, or in order to reduce the height of the dryer, the height of the vertical compressor needs to be reduced. In the former case, with the increase in the height of the dryer of the same capacity, not only does the manufacturing cost increase, but also the space required for installation needs to be increased. On the other hand, in the latter case, not only is it difficult to ensure the insulation distance between the compressor housing and the drive motor, but also the reduced discharge space inside the housing leads to increased oil discharge, and the compressor's refrigeration capacity and / or reliability also decrease.

[0008] This is particularly evident when applied to dual rotary compressors (hereinafter referred to as compound rotary compressors). In existing compound rotary compressors, as described in Patent Document 2 (Korean Patent No. 10-2336280), the first and second compression sections can be arranged axially, and the first and second compression sections form a 180° phase difference. This type of compound rotary compressor can counteract vibrations generated from the compression sections on both sides and can significantly reduce overall compressor vibration. Therefore, in dryers where the compressor mainly operates at low speeds, the vibration of the dryer can be reduced by significantly reducing the vibration of the compressor. However, in the case of compound rotary compressors, as mentioned above, since the first and second compression sections are arranged axially, the height of the entire compression section increases accordingly, and the height of the compressor also increases, thus causing the height of the dryer to increase as well.

[0009] Furthermore, in existing compound rotary compressors, a top cover is inserted into the upper end of an intermediate housing with the same inner diameter at both ends. This top cover is axially spaced from the upper end of the drive motor. Therefore, when assembling the top cover into the intermediate housing, interference between the top cover and the drive motor can be prevented, and the insulation distance between the housing and the drive motor can be ensured. However, in existing compound rotary compressors, because the top cover is axially spaced from the upper end of the drive motor, the compressor's height increases accordingly, resulting in an increase in the dryer's height, as described above. Summary of the Invention

[0010] The purpose of this invention is to provide a vertical compressor that can reduce height and vibration, and a garment processing device including the vertical compressor.

[0011] Another object of the present invention is to provide a vertical compressor capable of reducing height and ensuring an insulating distance between the housing and the drive motor, as well as a garment processing apparatus including the vertical compressor.

[0012] Another object of the present invention is to provide a vertical compressor capable of reducing height and reducing oil discharge, and a garment processing apparatus including the vertical compressor.

[0013] Another object of the present invention is to provide a vertical compressor capable of reducing height and improving the assemblability of the housing, and a garment processing apparatus including the vertical compressor.

[0014] To achieve the objectives of this invention, a vertical compressor comprising a drive motor, a compression unit, and a housing can be provided. The drive motor may include a stator with stator coils wound around a stator core, a rotor rotatably disposed on the inner circumference of the stator, and a rotating shaft coupled to and rotating with the rotor. The compression unit may be disposed on one side of the drive motor and may include at least one compression section that operates under the action of a driving force transmitted through the rotating shaft to compress refrigerant. The housing may include an intermediate housing formed in a barrel shape and a cover inserted into and coupled to an open end of the intermediate housing. The intermediate housing may include a main body and a cover insertion portion. The main body may house the drive motor and the compression unit. The cover insertion portion may be disposed at one end of the main body and into which the cover is inserted, and may expand radially along the rotating shaft. This allows for a reduction in the height of the vertical compressor, minimizing the space required for its installation, and also reduces vibration of the vertical compressor. Furthermore, reducing the height of the vertical compressor and expanding its oil separation space reduces the amount of oil discharged from the compressor, thereby improving its refrigeration capacity and / or reliability. Additionally, the cover, which forms part of the housing, can overlap radially with the drive motor, further reducing the height of the vertical compressor and ensuring sufficient insulation distance between the housing and the drive motor. Moreover, reducing the height of the vertical compressor and preventing interference between the cover and the drive motor during housing assembly improves the assemblability of the housing.

[0015] As an example, the open end of the cover body inserted into the cover insert can overlap at least a portion of the drive motor in the radial direction of the rotation axis. Therefore, the height of the vertical compressor can be reduced and the oil separation space expanded by widening the gap between the cover body inserted into the cover insert and the drive motor, thereby ensuring the insulation distance between the housing and the drive motor and improving the assemblability of the housing.

[0016] For example, the radial depth from the inner circumferential surface of the main body to the inner circumferential surface of the cover insertion portion can be formed to be greater than or equal to the thickness of the opening end of the cover body inserted into the cover insertion portion. This allows for a reduction in the height of the vertical compressor and a wider spacing between the cover body inserted into the cover insertion portion and the drive motor.

[0017] Furthermore, in the axial section of the stator core facing the cover, an insulator can be provided between the stator core and the stator coil. At least a portion of the insulator can overlap the cover insertion portion radially with the rotation axis. Thus, by widening the gap between the cover inserted into the cover insertion portion and the drive motor, not only can the insulation distance between the housing and the drive motor be ensured, but the assemblability of the housing can also be improved.

[0018] Specifically, at least a portion of the insulator can overlap the opening end of the cover radially with the rotating shaft. This reduces the height of the vertical compressor, allowing it to be installed even in narrower spaces.

[0019] Specifically, the height from the upper end of the stator core facing the cover to the upper end of the insulator can be set to be higher than or equal to the height from the upper end of the stator core to the lower end of the cover insertion portion and / or higher than or equal to the height from the upper end of the stator core to the opening end of the cover inserted into the cover insertion portion. Thus, the opening end of the cover can overlap radially with the insulator of the drive motor, thereby ensuring the insulation distance between the cover and the drive motor.

[0020] As another example, in the axial section of the stator core facing the cover, an insulator can be provided between the stator core and the stator coil. The outer circumferential surface of the insulator can be separated from the inner circumferential surface of the opening end of the cover, which is inserted into the cover insertion part, by a predetermined interval. This ensures the insulation distance between the cover and the drive motor and expands the oil separation space, thereby improving the oil separation effect in the oil separation space.

[0021] For example, the inner diameter of the opening end of the cover body inserted into the cover insertion portion can be formed to be larger than the outer diameter of the insulator. This allows for ensuring an insulation distance and reducing oil leakage by making the gap between the cover body and the drive motor as wide as possible.

[0022] As another example, the cover may include: a cover portion covering the open end of the intermediate housing; and an insertion portion extending from the cover portion and inserted into the open end of the intermediate housing. In the axial section of the stator core facing the cover, an insulator may be provided between the stator core and the stator coil. The maximum axial distance between the insulator and the inner circumferential surface of the cover portion facing the insulator can be formed to be less than or equal to the height from the upper end of the stator core to the upper end of the insulator. This allows for a reduction in the height of the vertical compressor and an increase in the inner diameter of the oil separation space, thereby improving the oil separation effect in the oil separation space.

[0023] As another example, the intermediate housing may have openings at both axial ends, and a first cover and a second cover may be inserted and connected to each of the axial ends of the intermediate housing, respectively. A refrigerant discharge pipe may be connected to the first cover, and the refrigerant discharge pipe communicates with the internal space of the outer housing. The inner diameter of the first cover may be larger than the inner diameter of the second cover. This improves the oil separation effect in the oil separation space connected to the refrigerant discharge pipe, thereby effectively suppressing oil discharge from the compressor.

[0024] For example, the first cover can be positioned above the second cover relative to the mounting surface. This allows for smooth oil separation from the refrigerant discharged from the compression unit, thereby improving the compressor's oil separation efficiency.

[0025] In addition, to achieve the objectives of the present invention, a clothing processing device including a housing, a drum, and a compressor can be provided. The drum can be rotatably disposed inside the housing and hold clothing, and heated air can be provided to dry the held clothing. The compressor can be disposed between the bottom surface of the housing and the drum. The compressor can be provided as a vertical compressor including a drive motor, a compression unit, and a housing. The drive motor can include a stator with stator coils wound on a stator core, a rotor rotatably disposed on the inner circumference of the stator, and a rotating shaft coupled to the rotor and rotating together. The compression unit can be provided with at least one compression section disposed on one side of the drive motor, and actuates under the action of a driving force transmitted through the rotating shaft to compress refrigerant. The housing can include an intermediate housing formed in the shape of a barrel and a cover inserted into and coupled to the open end of the intermediate housing. Here, the intermediate housing can include a main body portion that houses the drive motor and the compression unit, and a cover insertion portion disposed at one end of the main body portion and inserted into the cover, and expanding radially in the direction of the rotating shaft. Therefore, the height of the garment processing device using the vertical compressor can be reduced and vibration can be decreased, the insulation distance of the vertical compressor can be ensured and the reliability of the garment processing device using the vertical compressor can be improved, the oil discharge from the vertical compressor can be reduced and the energy efficiency ratio of the garment processing device using the vertical compressor can be improved.

[0026] As an example, the vertical compressor may include a first compression section and a second compression section, each having a compression space. A first eccentric portion constituting the first compression section and a second eccentric portion constituting the second compression section may be formed axially along the rotating shaft; the first eccentric portion and the second eccentric portion may form a 180° phase difference. This allows for a reduction in the height of the vertical compressor and a decrease in compressor vibration, thereby enabling the lowering or maintenance of the height of the garment handling device and allowing the vertical compressor to be mounted on the bottom surface of the garment handling device. Attached Figure Description

[0027] Figure 1 This is a perspective view showing a dryer having the vertical compressor of this embodiment.

[0028] Figure 2 This is a perspective view showing the top cover assembled in the vertical compressor of this embodiment.

[0029] Figure 3 It is shown Figure 2 A cross-sectional view of the interior of a vertical compressor.

[0030] Figure 4 yes Figure 3 Sectional view along line "Ⅳ-Ⅳ".

[0031] Figure 5 Is Figure 2 A perspective view showing the disassembled top cover of a vertical compressor.

[0032] Figure 6 In order to explain Figure 5 The relationship between the housing and the drive motor is shown in a cross-sectional view of the interior of the housing.

[0033] Figure 7 It is Figure 5 An enlarged cross-sectional view of section "A".

[0034] Figure 8 This is a graph comparing the oil discharge effect of the vertical compressor in this embodiment with that of a conventional vertical compressor. Detailed Implementation

[0035] Hereinafter, based on an embodiment shown in the accompanying drawings, the vertical compressor of the present invention and the garment processing apparatus including the vertical compressor will be described in detail.

[0036] Depending on the type of compression unit (or compression mechanism) that compresses the refrigerant, compressors can be classified as rotary compressors, scroll compressors, and reciprocating compressors, etc. The vertical compressor in this embodiment can include any compressor with a stator comprising a drive motor pressed into the inner circumferential surface of the housing; however, the description will focus on an example using a rotary compressor. Therefore, unless otherwise stated, a vertical compressor can be understood as a rotary compressor.

[0037] Furthermore, this embodiment focuses on an example using a compound rotary compressor, but it can also be applied to a single rotary compressor and / or a single vertical compressor.

[0038] Furthermore, the garment handling device may include both a condenser dryer and a condenser washer-dryer, but the following description focuses on the condenser dryer. Therefore, unless otherwise stated, the garment handling device can be understood as a condenser dryer.

[0039] Figure 1 This is a perspective view showing a dryer having the vertical compressor of this embodiment.

[0040] Reference Figure 1 The condenser dryer 10 (hereinafter referred to as the dryer) in this embodiment may include a housing 11 corresponding to the main body of the dryer. The housing 11 may be generally formed in a cuboid shape. An operation panel 12 for controlling the functions of the dryer 10 and displaying the status may be provided on the upper side of the front of the housing 11. A door 13 for putting in the object to be dried may be provided at the lower part of the operation panel 12.

[0041] Inside the housing 11, there may also be a roller 14 with an opening (not marked) that can be opened and closed through a door 13, the roller 14 being rotatable relative to the housing 11. For example, the roller 14 may be configured to be spaced apart from the bottom surface 11a of the housing 11 at a predetermined interval and rotatable inside the housing 11.

[0042] In addition to the drum 14, the interior of the housing 11 may also include a duct (not shown) for circulating heated air to the drum 14 and a heat pump (not labeled) for heating the circulating air via the duct and supplying heated air to the drum 14. For example, the duct may be connected to the front and rear sides of the drum 14 respectively, and the heat pump may include the vertical compressor 100 described above and be disposed between the bottom surface 11a of the housing 11 and the drum 14. In this case, the condenser (not shown) and evaporator (not shown), which form part of the heat pump, may be configured to exchange heat with the circulating air inside and / or outside the duct, and the vertical compressor 100, which forms another part of the heat pump, may be connected to the condenser and evaporator via refrigerant pipes, and may be directly fixed to the bottom surface 11a of the housing 11 outside the duct or fixed through the compressor housing (not labeled).

[0043] Here, the roller 14 can be formed into a generally cylindrical shape and arranged relatively long in the front-to-back direction inside the generally rectangular box 11. Thus, a roughly triangular-shaped clearance S can be formed near the lower edge of the inner side 11b of the box 11 and between the outer peripheral surface of the roller 14 facing it. A vertical compressor 100 with relatively low compressor vibration can be installed in this clearance S. This reduces the vibration noise of the dryer 10 and improves product reliability.

[0044] The drive motor 120, which constitutes the electric motor unit, and the compression unit 130, which constitutes the compression mechanism unit, described later in the section on the vertical compressor 100, are configured to be orthogonal or nearly orthogonal to the bottom surface 11a of the housing 11, which forms the exterior of the dryer 10. This configuration is applicable to various types of compressors, such as rotary compressors, scroll compressors, and reciprocating compressors. However, in this embodiment, the example using a rotary compressor will be described. Therefore, the vertical compressor described below can be understood as a rotary compressor.

[0045] A vertical compressor (hereinafter, a rotary compressor) 100 may have only one cylinder forming a compression space, or multiple cylinders forming their respective compression spaces may be stacked axially. A single-cylinder case can be defined as a single-cylinder rotary compressor, and a multiple-cylinder case can be defined as a compound rotary compressor. The following explanation uses a compound rotary compressor (or double rotary compressor) with two cylinders as an example. However, the same applies to single-cylinder rotary compressors.

[0046] Figure 2 This is a perspective view showing the top cover assembled in the vertical compressor of this embodiment. Figure 3 It is shown Figure 2 A cross-sectional view of the interior of a vertical compressor. Figure 4 yes Figure 3 Sectional view along line "Ⅳ-Ⅳ".

[0047] Reference Figures 2 to 4 In this embodiment, the rotary compressor (hereinafter referred to as the rotary compressor) 100 may have a drive motor 120 constituting the electric unit installed in the internal space 110a of the housing 110, and a compression unit 130 installed below the drive motor 120, which draws in refrigerant, compresses it, and discharges it into the internal space 110a of the housing 110. The drive motor 120 and the compression unit 130 may be mechanically connected by a rotating shaft 125.

[0048] The outer casing 110, constituting the exterior of the compressor, may include an intermediate casing 111, a top cover (or a first cover) 112, and a lower cover (or a second cover) 113. The intermediate casing 111 has openings at both its upper and lower ends. The top cover 112 and the lower cover 113 respectively cover the upper and lower ends of the intermediate casing 111 and seal the internal space 110a of the outer casing 110. Thus, an oil storage space 110b can be formed in the lower half of the internal space 110a of the outer casing 110, and an oil separation space 110c can be formed in the upper half of the internal space 110a of the outer casing 110.

[0049] In this configuration, the lower half of the intermediate housing 111 can form a main body 1111 that accommodates the drive motor 120, the compression unit 130, and the lower cover 113, while the upper half of the intermediate housing 111 can form a cover insertion portion 1112 that accommodates the top cover 112. The main body 1111 can be cylindrical, and the cover insertion portion 1112 can be an annular shape with an expanded tube diameter larger than the inner diameter of the main body 1111. The intermediate housing 111 including the cover insertion portion 1112 will be described again later.

[0050] Furthermore, a refrigerant suction pipe 115, connected to the outlet side of the liquid receiver 20, can be connected through the lower half of the intermediate housing 111, in other words, the lower half of the main body 1111. A refrigerant discharge pipe 116, connected to the inlet side of the condenser (not shown), can be connected through the top cover 112. The refrigerant suction pipe 115 can penetrate the intermediate housing 111 and be directly connected to the first suction port 1341a of the first cylinder 1341 (described later). The refrigerant discharge pipe 116 can penetrate the top cover 112 and be directly connected to the internal space 110a of the outer casing 110, i.e., the oil separation space 110c. Thus, the internal space 110a of the outer casing 110 can form a high-pressure compressor filled with refrigerant discharged from the first compression space V1 and / or the second compression space V2 (described later).

[0051] Reference Figure 3 and Figure 4 The drive motor 120 constituting the electric unit in this embodiment may include a stator 121, a rotor 122, and a rotating shaft 123. The stator 121 may be pressed into and fixed inside the housing 110, and the rotor 122 may be rotatably inserted into the stator 121 inside the stator 121. The rotating shaft 123 may be coupled to the center of the rotor 122.

[0052] The stator 121 may include a stator core 1211, a stator coil 1212, and an insulator 1213. The stator core 121 may be pressed into and fixed to the intermediate housing 111, the stator coil 1212 may be wound around the stator core 1211, and the insulator 1213 may be disposed between the stator core 1211 and the stator coil 1212. The stator 121 will be described later together with the housing 110.

[0053] The rotor 122 may include a rotor core 1221 and a permanent magnet 1222. The rotor core 1221 may be rotatably disposed inside the stator core 1211, and the permanent magnet 1222 may be embedded in the rotor core 1221 at predetermined intervals along the circumferential direction.

[0054] The rotating shaft 123 may include a shaft portion 1231, a first eccentric portion 1232, and a second eccentric portion 1233. The shaft portion 1231, constituting one end of the rotating shaft 123, extends along the same axis relative to the shaft center of the rotating shaft 123 and is pressed into the center of the rotor 122. The first eccentric portion 1232 and the second eccentric portion 1233, constituting the other end of the rotating shaft 123, are eccentrically formed relative to the shaft center of the rotating shaft 123, so that the first roller 1342 and the second roller 1352, described later, can be eccentrically coupled. The first eccentric portion 1232 and the second eccentric portion 1233 may form part of the first compression portion 134 and the second compression portion 135, described later, and can be eccentrically formed along the circumferential direction with a phase difference of approximately 180°. Thus, the first compression portion 134 and the second compression portion 135, described later, can perform a compression stroke together with the first eccentric portion 1232 and the second eccentric portion 1233 with a phase difference of approximately 180°. Therefore, the compound rotary compressor of this embodiment can counteract the vibrations generated from the first compression section 134 and the second compression section 135, thereby significantly reducing compressor vibration.

[0055] Reference Figure 3 The compression unit 130 in this embodiment may include a main bearing plate (hereinafter referred to as main bearing 131), a secondary bearing plate (hereinafter referred to as secondary bearing 132), an intermediate plate 133, a first compression part 134, and a second compression part 135. The first compression part 134 and the second compression part 135 may be formed on both sides of the rotating shaft 123 through the intermediate plate 133.

[0056] The main bearing 131 can be fixedly coupled to the inner circumferential surface of the intermediate housing 111. A first discharge port 1311 for discharging refrigerant compressed in the first compression space V1 can be formed on the main bearing 1311, and a first discharge valve 1312 for opening and closing the first discharge port 1311 can be provided at its end. A first discharge cover 1313 having a first discharge space 1313a can be provided on one side of the main bearing 1311, and the first discharge cover 1313 can open into the internal space 110a of the housing 110. Thus, the refrigerant discharged from the first discharge space 1313a of the first discharge cover 1313 can be discharged from the internal space 110a of the housing 110, thereby creating a discharge pressure within the internal space 110a of the housing 110.

[0057] Although not shown in the accompanying drawings, the secondary bearing 132 can be fixed to the intermediate housing 111, and the main bearing 131 can be fastened to the secondary bearing 132, or both the main bearing 131 and the secondary bearing 132 can be fixed to the intermediate housing 111. Additionally, the first cylinder 1341 and / or the second cylinder 1351, described later, can be fixed to the intermediate housing 111, and the main bearing 131 and the secondary bearing 132 can also be fastened to and supported on the first cylinder 1341 and / or the second cylinder 1351.

[0058] The auxiliary bearing 132 and the intermediate plate 133 are bolted to and supported by the main bearing 131, with the first compression section 134 and the second compression section 135 as spaced apart. A second discharge port 1321 for discharging refrigerant compressed in the second compression space V2 can be formed in the auxiliary bearing 132, and a second discharge valve 1322 for opening and closing the second discharge port 1321 can be provided at its end. A second discharge cover 1323 having a second discharge space 1323a can be provided on one side of the auxiliary bearing 132, and the second discharge cover 1323 can open into the internal space 110a of the outer casing 110. Furthermore, a refrigerant passage 130a communicating between the second discharge space 1323a and the first discharge space 1313a can be formed through the auxiliary bearing 132, the second cylinder 1351 (described later), the intermediate plate 133, the first cylinder 1341, and the main bearing 131. Therefore, the refrigerant discharged into the second discharge space 1323a of the second discharge cover 1323 can move to the first discharge space 1313a via the refrigerant passage 130a and be discharged together with the refrigerant discharged from the first compression space V1 into the internal space 110a of the outer casing 110, thereby forming a discharge pressure in the internal space 110a of the outer casing 110.

[0059] Although not shown in the accompanying drawings, the second discharge cap 1323 may also open into the internal space 110a of the housing 110. In this case, the additional refrigerant passage 130a can be eliminated.

[0060] The intermediate plate 133 can be formed as an annular ring with an inner diameter larger than the inner diameter of the main bearing 131 and / or the secondary bearing 132. In other words, the intermediate plate 133 can be formed as an annular ring with an inner diameter larger than the outer diameter of the first eccentric portion 1232 and / or the second eccentric portion 1233 of the rotating shaft 123. Thus, the intermediate plate 133 can be assembled between the first compression portion 134 and the second compression portion 135.

[0061] In addition to the refrigerant passage 130a described above, a connecting hole 1331 may also be formed in the intermediate plate 133 to connect the first suction port 1341a and the second suction port 1351a, which will be described later. As a result, a portion of the refrigerant drawn into the first compression space V1 through the suction pipe 115 can be guided to the second compression space V2 through the connecting hole 130a, so that the first compression section 134 and the second compression section 135 can alternately and continuously perform the compression stroke.

[0062] The first compression section 134 may include a first cylinder 1341, a first roller 1342, and a first blade 1343. The first cylinder 1341 has a first intake port 1341a and is fixedly connected between the main bearing 131 and the intermediate plate 133. The first roller 1342 is disposed on the first eccentric portion 1232 and rotates inside the first cylinder 1341. The first blade 1343 is slidably inserted into the first cylinder 1341 and reciprocates linearly through the first roller 1342. Thus, the first compression section 134 forms a first compression space V1 inside the first cylinder 1341 and compresses the refrigerant drawn in through the first intake port 1341a, thereby allowing it to be discharged through the first discharge port 1311 of the main bearing 1311 into the first discharge space 1313a of the first discharge cover 1313.

[0063] The second compression section 135 may include a second cylinder 1351, a second roller 1352, and a second blade 1353. The second cylinder 1351 has a second intake port 1351a and is fixedly connected between the auxiliary bearing 132 and the intermediate plate 133. The second roller 1352 is disposed on the second eccentric portion 1233 and rotates inside the second cylinder 1351. The second blade 1353 is slidably inserted into the second cylinder 1351 and reciprocates linearly through the second roller 1352. Thus, the second compression section 135 can form a second compression space V2 inside the second cylinder 1351 and compress the refrigerant drawn in through the second intake port 1351a, thereby allowing it to be discharged through the second discharge port 1321 of the auxiliary bearing 132 to the second discharge space 1323a of the second discharge cover 1323.

[0064] Although not shown in the accompanying drawings, the first compression section 134 and / or the second compression section 135 can compress the refrigerant by hinged engagement of the first blade 1343 and the second blade 1353 to the first roller 1342 and / or the second roller 1352, respectively, or by slidably engaging the first blade 1343 and the second blade 1353 to the first roller 1342 and / or the second roller 1352, respectively. In these cases, the first compression section 134 and the second compression section 135 can also be arranged axially.

[0065] As described above, in this embodiment, a vertical compressor (e.g., a compound rotary compressor) with a plurality of compression units 134, 135 arranged axially can be applied to the dryer 10. In this case, the plurality of compression units 134, 135 can be configured to perform the compression stroke with a phase difference of approximately 180°. Therefore, the compressor vibrations generated from the plurality of compression units 134, 135 can cancel each other out. Thus, compared to a single rotary compressor, the compressor vibration can be significantly reduced. Consequently, the vibration noise of the dryer using a vertical compressor can be further reduced, while the reliability of the dryer products can be further improved.

[0066] However, the clearance between the housing 11 and the drum 14 of the dryer 10 is insufficient to adequately accommodate the vertical, compound rotary compressor 100 with multiple compression sections. In this case, the height of the housing 11 can be increased or the height of the compound rotary compressor 100 can be decreased. In the former case, the height of the dryer 10 will increase; in the latter case, the housing 110 of the compressor 100 and the drive motor 120 (more precisely, the upper insulator) will be interfered with and separated from the assembly side. Moreover, in the latter case, due to the difficulty in ensuring the insulation distance between the housing 110 and the drive motor 120 of the compressor 100, reliability decreases, the oil separation space 110c of the housing 110 reduces the space for the compressor 100 to decrease in height, and the oil discharged from the housing 110 increases, resulting in decreased refrigeration capacity and / or reliability.

[0067] Therefore, in this embodiment, by providing a cover insertion part on the housing 110 of the vertical compressor, the height of the vertical compressor 100 can be reduced, while preventing assembly interference between the housing 110 of the vertical compressor 100 and the drive motor 120. This ensures the insulation distance between the housing 110 and the drive motor 120 and reduces the amount of oil discharged from the housing 110.

[0068] Figure 5 Is Figure 2 A perspective view showing the disassembled top cover of a vertical compressor. Figure 6 In order to explain Figure 5 The relationship between the housing and the drive motor is shown in a cross-sectional view of the interior of the housing. Figure 7 It is Figure 5 An enlarged cross-sectional view of section "A".

[0069] Refer again Figure 3In the compound rotary compressor (hereinafter referred to as rotary compressor) of this embodiment, a drive motor 120 constituting an electric motor may be provided in the upper half of the intermediate housing 111, which constitutes part of the outer housing 110, and a first compression part 134 and a second compression part 135 constituting a compression mechanism may be provided in the lower half of the intermediate housing 111. The first compression part 134 and the second compression part 135 are respectively arranged axially between the main bearing 131 and the auxiliary bearing 132 through the intermediate plate 133.

[0070] Reference Figures 5 to 7 In this embodiment, the intermediate housing 111 can be generally formed into a cylindrical shape, and a radially enlarged cover insertion portion 1112 can be formed at the upper open end. For example, the cover insertion portion 1112 of the intermediate housing 111 can be formed such that the inner diameter D1 of the cover insertion portion 1112 at the intermediate housing 111 is larger than the inner diameter D2 of the main body portion 1111 of the intermediate housing 111 excluding the cover insertion portion 1112. Thus, the inner circumferential surface of the top cover 112 inserted into the upper open end of the intermediate housing 111 can be connected axially to the inner circumferential surface of the main body portion 1111 of the intermediate housing 111 at the same height (or the same plane), or connected radially outward to the inner circumferential surface of the main body portion 1111 of the intermediate housing 111 in a stepped manner. The standard of the cover insertion portion 1112 will be described again later with the top cover 112 and / or the drive motor 120.

[0071] The top cover 112 may be recessed upwards along the axial direction of the rotation shaft 123 and formed into a dome shape. For example, a generally disc-shaped cover portion (hereinafter referred to as the upper cover portion 1121) may be formed at the center of the top cover 112, and a cylindrical insertion portion (hereinafter referred to as the upper insertion portion 1122) may be formed at the edge of the upper cover portion 1121, the insertion portion 1122 being bent downwards toward the intermediate housing 111. In addition to the refrigerant discharge pipe 116 described above, a terminal portion (not marked) for connecting to an external power source may also be connected through the upper cover portion 1121, and the outer peripheral surface of the upper insertion portion 1122 may be inserted into and fused to the inner peripheral surface of the cover insertion portion 1112 of the intermediate housing 111. Therefore, when assembling and / or operating the compressor 100, the volume increase caused by thermal deformation of the upper insertion portion 1122 of the top cover 112 can be suppressed by the support of the cover insertion portion 1112 of the intermediate housing 111, so that the intermediate housing 111 and the top cover 112 can be tightly sealed.

[0072] In this case, the inner diameter D3 of the upper insertion portion 1122 of the top cover 112 (hereinafter referred to as the inner diameter of the top cover) can be formed as the inner diameter D4 of the lower insertion portion 1132 of the lower cover 113 described later. In other words, the inner diameter D3 of the upper insertion portion 1122 of the top cover 112 inserted into the cover insertion portion 1112 of the intermediate housing 111 can be formed to be larger than the inner diameter D4 of the lower insertion portion 1132 inserted into the lower opening end of the intermediate housing 111. As a result, the insulation distance between the top cover 112 and the drive motor 120 described later can be ensured, and the inner diameter D3 of the top cover 112 can be increased. Furthermore, the oil separation effect in the oil separation space 110c of the housing 110 can be improved, thereby effectively suppressing the oil discharged from the oil separation space 110c of the housing 110.

[0073] Furthermore, in this case, as described above, the cover insertion portion 1112 of this embodiment can be formed such that the inner diameter D1 of the cover insertion portion 1112 in the intermediate housing 111 is larger than the inner diameter D2 of the main body portion 1111 in the intermediate housing 111. For example, the inner diameter D1 of the cover insertion portion 1112 in the intermediate housing 111 can be formed such that the inner diameter D3 of the upper insertion portion 1122 inserted into the top cover 112 of the cover insertion portion 1112 in the intermediate housing 111 is greater than or equal to (preferably greater than) the inner diameter D2 of the main body portion 1111 in the intermediate housing 111. Therefore, the radial depth L1 from the inner circumferential surface of the main body portion 1111 of the intermediate housing 111 to the inner circumferential surface of the cover insertion portion 1112 in the intermediate housing 111 can be formed to be greater than or equal to (preferably greater than) the radial thickness L2 of the upper insertion portion 1122 of the top cover 112. Therefore, the inner peripheral surface of the upper insertion portion 1122 of the top cover 112 is formed to form at least the same plane 110 as the inner peripheral surface of the main body portion 1111 at the intermediate housing 111, or to form a step that is radially further away from the upper insulator 1217. As described above, the insulation distance between the stator coil 1212 and the housing (more precisely, the top cover) can be ensured, and interference with the upper insulator 1217 can be avoided and the assemblability of the top cover 112 can be improved when assembling the top cover 112.

[0074] The lower cover 113 may be recessed downwards along the axial direction of the rotating shaft 123 and formed into a dome shape. In other words, the lower cover 113 may be formed into a dome shape that is recessed in the opposite direction to the top cover 112. For example, a generally disc-shaped cover portion (hereinafter referred to as the lower cover portion 1131) may be formed at the center of the lower cover 113, and a cylindrical insertion portion (hereinafter referred to as the lower insertion portion) 1132 may be formed at the edge of the lower cover portion 1131, the insertion portion 1132 being bent upwards toward the intermediate housing 111. A base plate (unmarked) disposed on the compressor housing (unmarked) may be attached to the lower cover portion 1131, and the lower insertion portion 1132 may be inserted into and fused to the lower opening end of the intermediate housing 111. Thus, during the assembly and / or operation of the compressor 100, thermal deformation of the lower insertion portion 1132 of the lower cover 113 can be suppressed to ensure a tight seal between the intermediate housing 111 and the lower cover 113.

[0075] Reference Figures 5 to 7 As described above, the stator 121, which constitutes part of the drive motor 120 of this embodiment, may include a stator core 1211, a stator coil 1212, and an insulator 1213.

[0076] Specifically, the stator core 1211 can be formed in a cylindrical shape. For example, the stator core 1211 can be formed with an annular yoke 1215, and a plurality of teeth 1216 for winding the stator coil 1212 can be formed on the inner circumferential surface of the yoke 1215. The plurality of teeth 1216 extend radially along the circumferential direction at predetermined intervals.

[0077] Furthermore, the stator core 1211 can be pressed into and fixed to the inner circumferential surface of the intermediate housing 111. In other words, the yoke 1215 constituting the outer circumferential surface of the stator core 1211 can be pressed into and fixed to the inner circumferential surface of the intermediate housing 111 in a manner that contacts the inner circumferential surface of the intermediate housing 111. Thus, the teeth 1216 can be radially spaced from the intermediate housing 111.

[0078] The stator coil 1212 can be electrically connected to an external power source via terminals (not labeled) wound around the stator core 1211 and connected to the housing 110. In other words, the stator coil 1212 can be wound around a plurality of teeth 1216 of the stator core 1211, which are radially spaced from the inner circumferential surface of the intermediate housing 111. Thus, the stator coil 1212 can be radially spaced from the intermediate housing 111.

[0079] Insulator 1213 may include an upper insulator 1217 and a lower insulator 1218. The upper insulator 1217 may be disposed on the upper side of the stator core 1211, and the lower insulator may be disposed on the lower side of the stator core 1211. The upper insulator 1217 and the lower insulator are typically formed symmetrically about the stator core 1211. This embodiment relates to the relationship between the upper insulator 1217 and the outer casing 110; unless otherwise stated, insulator 1213 can be understood as upper insulator 1217.

[0080] Specifically, the upper insulator 1217 can be disposed between the axial side of the stator core 1211 and the stator coil 1212 wound around the stator core 1211, and between the stator coil 1212 and the inner circumferential surface of the outer casing (e.g., intermediate casing) 110 surrounding the stator coil 1212. Thus, the insulator 1213 can respectively insulate between the stator core 1211 and the stator coil 1212, and between the stator coil 1212 and the outer casing 110.

[0081] For example, the upper insulator 1217 may include a first insulating portion 1217a and a second insulating portion 1217b. The first insulating portion 1217a is the portion that insulates between the stator core 1211 and the stator coil 1212, and the second insulating portion 1217b is the portion that insulates between the stator coil 1212 and the housing 110.

[0082] The first insulating portion 1217a can be placed on the axial side of the stator core 1211, in other words, it can be placed on the axial side of the tooth portion 1216 and extend radially and be formed in a shape corresponding to the respective tooth portion 1216. Thus, the first insulating portion 1217a can insulate between the stator core 1211 and the stator coil 1212.

[0083] The second insulating portion 1217b can be bent and extended axially from the outer peripheral end of the first insulating portion 1217a. The second insulating portion 1217b can be formed in a cylindrical shape, or it can be formed as a plurality of protruding shapes that axially protrude between the first insulating portions 1217a and are connected in the circumferential direction. In this case, the second insulating portion 1217b can be formed axially above the upper end of the stator coil 1212 (e.g., coil bundle), or it can be formed at the same height as the upper end of the stator coil (e.g., coil bundle) 1212. Thus, the second insulating portion 1217b can effectively insulate the stator coil 1212 and the housing 110 by surrounding the outer peripheral side of the stator coil 1212.

[0084] Furthermore, at least a portion of the second insulating portion 1217b can radially overlap with the cover insertion portion 1112 of the intermediate housing 111 described above and / or the upper insertion portion 1122 of the top cover 112. In other words, the height H1 from the upper end 1211a of the stator core 1211 to the upper end of the upper insulator 1217 (more precisely, the second insulating portion) can be formed to be higher than or equal to the height H2 from the upper end 1211a of the stator core 1211 to the upper end (more precisely, the bent end) of the cover insertion portion 1112 and / or higher than or equal to the height H3 from the upper end of the stator core 1211 to the lower end (open end) of the upper insertion portion 1122 of the top cover 112. Thus, the upper insertion portion 1122 of the top cover 112 can radially overlap with the upper insulator 1217 of the drive motor 120 and ensure the insulation distance between the housing 110 (more precisely, the top cover) and the stator coil 1212.

[0085] Furthermore, in this case, the outer peripheral surface of the second insulating portion 1217b can be separated from the inner peripheral surface of the upper insertion portion 1122 of the top cover 112 by a predetermined interval. In other words, the outer diameter D5 of the upper insulator 1217 (more precisely, the second insulating portion) can be formed to be smaller than the inner diameter D3 of the upper insertion portion 1122 of the top cover 112. As a result, the top cover 112 can be moved away from the upper insulator 1217b and the insulation distance between the housing 110 (more precisely, the top cover) and the stator coil 1212 is ensured, and interference with the upper insulator 1217 is avoided and the assemblability of the top cover 112 is improved when assembling the top cover 112.

[0086] Furthermore, in this case, the maximum axial distance G1 between the upper insulator 1217 and the inner circumferential surface of the upper cover portion 1121 of the top cover 112 facing it axially can be formed to be less than or equal to the axial distance G2 between the upper end 1217b1 of the upper insulator 1217 and the upper end 1211a of the stator core 1211. In other words, the maximum axial distance G1 from the upper end height of the second insulating portion 1217b of the upper insulator 1217 to the inner circumferential surface of the upper cover portion 1121 of the top cover 112 can be formed to be less than or equal to the axial height H1 of the second insulating portion 1217b of the upper insulator 1217 (i.e., the height from the upper end of the stator core to the upper end of the insulator). As a result, the axial distance from the drive motor 120 to the top cover 112 can be significantly reduced, and the overall height of the vertical compressor can be lowered. However, in this case, as described above, the inner diameter D3 of the upper insertion portion 1122 of the top cover 112 can be enlarged, and the inner diameter D3′ of the oil separation space 110c can also be enlarged, thereby improving the oil separation effect in the oil separation space 110c.

[0087] This can also be achieved through Figure 8 I learned that... Figure 8This is a graph comparing the oil discharge effect of the vertical compressor in this embodiment with that of a conventional vertical compressor.

[0088] like Figure 8 As shown, compared with the prior art, this embodiment significantly reduces oil discharge not only under relatively high-speed operating conditions (80Hz) but also under relatively low-speed operating conditions (38Hz). This is because by forming a cover insertion portion 1112 in the intermediate housing 111 to enlarge the inner diameter D3 of the top cover 112 and expand the actual oil discharge space 110c, the refrigerant discharged from the compression portions 134 and 135 can remain in the oil discharge space 110c for a longer period of time, thereby improving the oil separation effect.

[0089] On the other hand, in the above embodiments, a compound rotary compressor with two cylinders was used as an example for explanation. However, depending on the circumstances, the same principle can be applied to compound rotary compressors with three or more cylinders arranged axially and to single rotary compressors with one cylinder. Since it is the same as the embodiments described above, the description of the above embodiments will be used instead of a specific description of them.

Claims

1. A vertical compressor, wherein, include: A drive motor has a stator on which stator coils are wound on a stator core, a rotor rotatably disposed on the inner circumference of the stator, and a rotating shaft coupled to the rotor and rotating together with the rotor. A compression unit is disposed on one side of the drive motor and is provided with at least one compression section, which operates under the action of the driving force transmitted through the rotating shaft and compresses the refrigerant. as well as The outer shell has an intermediate shell formed in the shape of a barrel and a cover that is inserted into and joined to the open end of the intermediate shell; The intermediate housing includes: The main body houses the drive motor and the compression unit; as well as A cover insertion part is provided at one end of the main body and the cover body is inserted therein, and the tube expands radially in the direction of the rotation axis.

2. The vertical compressor according to claim 1, wherein, The open end of the cover body inserted into the cover insertion part overlaps with at least a portion of the drive motor in the radial direction of the rotation axis.

3. The vertical compressor according to claim 2, wherein, The radial depth from the inner circumferential surface of the main body to the inner circumferential surface of the cover insertion part is formed to be greater than or equal to the thickness of the opening end of the cover body inserted into the cover insertion part.

4. The vertical compressor according to claim 1, wherein, An insulator is provided between the stator core and the stator coil in the axial section of the stator core facing the cover. At least a portion of the insulator overlaps the cover insertion portion radially along the rotation axis.

5. The vertical compressor according to claim 4, wherein, At least a portion of the insulator overlaps with the opening end of the cover in the radial direction of the rotation axis.

6. The vertical compressor according to claim 4, wherein, The height from the upper end of the stator core facing the cover to the upper end of the insulator is formed to be higher than or equal to the height from the upper end of the stator core to the lower end of the cover insertion portion, and / or higher than or equal to the height from the upper end of the stator core to the opening end of the cover inserted into the cover insertion portion.

7. The vertical compressor according to claim 1, wherein, An insulator is provided between the stator core and the stator coil in the axial section of the stator core facing the cover. The outer peripheral surface of the insulator is separated from the inner peripheral surface of the opening end of the cover body inserted into the cover insertion part by a predetermined interval.

8. The vertical compressor according to claim 7, wherein, The inner diameter of the opening end of the cover body inserted into the cover insertion part is formed to be larger than the outer diameter of the insulator.

9. A garment processing device, wherein, include: Box; A roller, rotatably disposed inside the housing, holds the clothes and provides heated air to dry the held clothes; as well as The compressor is located between the bottom surface of the housing and the roller. The compressor is a vertical compressor as described in any one of claims 1 to 8.

10. The garment processing apparatus according to claim 9, wherein, The vertical compressor includes a first compression section and a second compression section, each having a compression space. A first eccentric portion constituting the first compression portion and a second eccentric portion constituting the second compression portion are formed along the axial direction of the rotating shaft. The first eccentric portion and the second eccentric portion form a phase difference of 180°.

Images