A multi-cylinder washing machine drying system and a multi-cylinder washing machine

Abstract

The application provides a multi-cylinder washing machine drying system and a multi-cylinder washing machine, which comprise a frame, at least two washing cylinders, an air inlet system, a heat pump system and an air outlet system, two ends of the heat pump system are respectively provided with air outlets and air inlets, one end of the air inlet system is connected with the air outlet of the heat pump system, the other end of the air inlet system is connected with the at least two cylinders, one end of the air outlet system is connected with the air inlet of the heat pump system, and the other end of the air outlet system is connected with the at least two cylinders. Thus, the circulating hot air drying of the at least two washing cylinders is realized, the heat pump system is arranged at the rear side of the at least one washing cylinder, the space occupation in the height direction is reduced, the internal structure of the multi-cylinder washing machine is compact, and the use stability is improved.

Description

Technical Field

[0001] This invention relates to the field of clothing processing equipment, and more specifically, to a multi-drum washing machine drying system and a multi-drum washing machine. Background Technology

[0002] Most conventional washing machines lack the function of separating clothes for washing. To wash different types of clothing, the washing machine must be used or run several times. For example, separating adult clothes, underwear, and children's clothes requires three separate uses, which is time-consuming and tedious. Furthermore, washing different types of clothing in the same drum can easily lead to the growth of bacteria and cross-contamination. Therefore, multi-functional twin-drum or even multi-drum washing machines are very popular in the home appliance market. Currently, most multi-functional washing machines on the market are twin-drum machines, which can only wash or dry two types of clothing simultaneously, limiting their use for large families. Therefore, developing multi-drum washing machines is a current research and development direction in the washing machine market. In addition to washing, multi-drum washing machines also need drying functions, requiring a complete air intake and exhaust system and heat exchange system. However, given the limited internal space of a washing machine, these structures occupy a significant amount of internal space. How to systematically design the drying system is a problem that urgently needs to be solved in the field of multi-drum washing machines. Summary of the Invention

[0003] In view of this, the present invention aims to propose a drying system installation structure and a washing machine to solve the problems in the prior art where the drying system of a multi-drum washing machine cannot be set on the upper and lower sides of the cabinet and the drying system is prone to vibration.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A multi-drum washing machine drying system includes a frame, at least two washing drums, an air inlet system, a heat pump system, and an air outlet system. The heat pump system has an air outlet and an air inlet at both ends. One end of the air inlet system is connected to the air outlet of the heat pump system, and the other end of the air inlet system is connected to the at least two drums. One end of the air outlet system is connected to the air inlet of the heat pump system, and the other end of the air outlet system is connected to the at least two drums.

[0006] Furthermore, the washing drum includes a first drum, a second drum, a third drum, and a fourth drum. The first drum and the second drum are arranged side by side at the top, the fourth drum is arranged at the bottom, and the third drum is located between the fourth drum and the first and second drums.

[0007] Furthermore, the frame includes side beams, vertical beams, a top beam, and a rear crossbeam. The side beams are located in the middle of the side of the frame or near the upper part of the middle of the side. Both ends of the heat pump system are connected to the side beams, the top end of the heat pump system is connected to the top beam, and the air intake system is connected to the rear crossbeam.

[0008] Furthermore, the heat pump system includes a housing assembly, a compressor assembly, a condenser, and an evaporator. An air duct is formed inside the housing assembly. The condenser and evaporator are disposed inside the air duct. The compressor assembly is disposed outside the air duct. The compressor assembly includes a compressor, a bracket, and a mounting bracket. The bracket is disposed outside the housing assembly. The compressor is installed inside the bracket. The mounting bracket is disposed on the upper part of the compressor and is connected to the top beam.

[0009] Furthermore, an air inlet duct is provided at the air inlet of the heat pump system, and at least a first air outlet duct and a second air outlet duct are connected to the air inlet duct. An adjustment device is provided at the connection position between the air inlet duct and the first air outlet duct and the second air outlet duct, and the adjustment device is connected to the first air outlet duct and / or the second air outlet duct.

[0010] Furthermore, the regulating device includes an integrated main pipe, a first air outlet branch pipe, and a second air outlet branch pipe, which together form a three-way structure.

[0011] Furthermore, the air intake system includes at least a first air intake pipe, a second air intake pipe, and a volute. The first and second air intake pipes are connected to the volute, and the other end of the volute is connected to the air outlet of the drying air duct through an air outlet pipe.

[0012] Furthermore, an air inlet valve is provided at the connection between the first air inlet pipe and the second air inlet pipe. By adjusting the air inlet valve, the volute is connected to the first air inlet pipe and / or the second air inlet pipe to achieve hot air circulation drying of at least one cylinder.

[0013] Furthermore, the air inlet valve includes a second valve plate, a second impeller, and a second knob. The controller controls the second knob to drive the second impeller to rotate, and the second impeller drives the second valve plate to rotate.

[0014] It enables circulating hot air drying for at least two washing drums, while placing the heat pump system on the rear side of at least one washing drum, reducing the space occupied in the vertical direction, making the internal structure of the multi-drum washing machine compact, and improving the stability of use.

[0015] The present invention also provides a multi-drum washing machine, including the multi-drum washing machine drying system described above, wherein a heat pump system in the drying system is disposed on the rear side of at least one washing drum.

[0016] The advantages of the multi-drum washing machine and the aforementioned multi-drum washing machine drying system compared to the prior art are the same, and will not be repeated here. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the multi-drum washing machine according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the drying system described in an embodiment of the present invention;

[0019] Figure 2a for Figure 2 A magnified view of part A in the middle;

[0020] Figure 3 This is a schematic diagram of the two-cylinder air inlet system described in an embodiment of the present invention;

[0021] Figure 3a for Figure 3 A magnified view of a portion of the central air intake system;

[0022] Figure 4 This is a schematic diagram of the three or four cylinder air inlet system described in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the air intake system structure according to an embodiment of the present invention;

[0024] Figure 6 This is a top view of the air intake system described in an embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional view of the air intake system described in an embodiment of the present invention;

[0026] Figure 8 This is an exploded view of the air intake system described in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the two-tube air outlet system described in an embodiment of the present invention;

[0028] Figure 9a for Figure 9 A magnified view of part A in the middle;

[0029] Figure 10 This is a schematic diagram of a three- or four-cylinder air outlet system according to an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the air outlet system structure according to an embodiment of the present invention;

[0031] Figure 12 This is an exploded view of the air outlet system described in an embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the connection structure between the third cylinder and the air outlet system according to an embodiment of the present invention;

[0033] Figure 14This is a schematic diagram of the connection structure between the third and fourth cylinders and the air outlet system according to an embodiment of the present invention;

[0034] Figure 15 This is a schematic diagram of the connection structure between the fourth cylinder and the air outlet system according to an embodiment of the present invention;

[0035] Figure 16 This is an axial view of the heat pump system described in an embodiment of the present invention;

[0036] Figure 17 This is a top view of the heat pump system described in an embodiment of the present invention;

[0037] Figure 18 for Figure 17 Sectional view of AA;

[0038] Figure 19 This is a side view of the heat pump system described in an embodiment of the present invention;

[0039] Figure 20 This is an exploded view of the heat pump system described in an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Compressor assembly, 11-Bracket, 111-Support plate, 112-Support vertical plate, 12-Fixing frame, 121-Flanged edge, 122-Top plate, 123-Enclosure panel, 13-Second vibration damper, 14-First vibration damper, 2-Condenser, 3-Evaporator, 4-Air duct, 5-Air inlet, 50-Regulating device, 501-Integrated main pipe, 503-First air outlet branch pipe, 504-Second air outlet branch pipe, 51-Air inlet pipe, 52-First regulating valve, 521-First valve plate, 522-First impeller, 523-First convex bulge, 524-First knob, 53-First air outlet pipe, 54-Second air outlet pipe, 55-Third air outlet pipe, 6-Top cover, 61-Snap fastener, 62-First connecting hole, 7-Lower cover, 70-Vibration damping pad, 71-First connecting part 72-Second connecting part, 73-Snap-hole, 74-Second connecting hole, 75-Screw hole, 8-Air outlet, 81-Air outlet duct, 82-First air inlet duct, 83-Second air inlet duct, 84-Volume, 841-Connecting block, 842-Vibration damping plate, 843-Bellboard, 85-Air inlet valve, 851-Second valve plate, 852-Second impeller, 853-Second convex bulge, 854-Second knob, 86-Electric heating, 87-Fan, 88-Third air inlet duct, 9-Refrigerant duct, 100-Heat pump system, 101-First cylinder, 102-Second cylinder, 103-Third cylinder, 104-Fourth cylinder, 200-Frame, 201-Side beam, 2011-First notch, 202-Vertical beam, 203-Top beam, 204-Rear crossbeam, 2041-Second notch Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the embodiments, the directions or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "top," and "bottom" refer to the orientations or positional relationships shown in the accompanying drawings. The term "on..." means directly supported by the element, or indirectly supported by the element through another element integrated into or supported by that element.

[0043] like Figures 1-18 As shown, this embodiment provides a multi-drum washing machine drying system, including a frame 200, at least two washing drums, an air inlet system, a heat pump system 100, and an air outlet system. The heat pump system 100 has an air inlet 5 and an air outlet 8 at its two ends, respectively. One end of the air inlet system is connected to the air inlet 5 of the heat pump system, and the other end of the air inlet system is connected to the at least two drums. One end of the air outlet system is connected to the air outlet 8 of the heat pump system, and the other end of the air outlet system is connected to the at least two drums, thereby realizing the circulating hot air drying of at least two washing drums.

[0044] Specifically, such as Figure 3 and 9 As shown, the washing drum in this embodiment may consist only of a third drum 103 (small drum) and a fourth drum 104 (large drum), with the third drum 103 and the fourth drum 104 arranged vertically, and the third drum 103 positioned above the fourth drum 104. Further, the washing drum in this embodiment may also include a third drum 103 and a fourth drum 104, as well as a first drum 101 or a second drum 102 (taking the first drum 101 as an example), i.e., a three-drum structure, with the first drum 101 positioned above the third drum 103, or the first drum 101 and the third drum 103 arranged side-by-side. The volumes of both the first drum 101 and the third drum 103 are smaller than the fourth drum 104, and the volume of the first drum 101 is not larger than the third drum 103. The drying system 100 is located behind the first drum 101 or the third drum 103.

[0045] Optionally, such as Figure 1 As shown, the washing drum in this embodiment may also include a first drum 101, a second drum 102, a third drum 103, and a fourth drum 104. The first drum 101 and the second drum 102 are arranged side-by-side at the top, the fourth drum 104 is arranged at the bottom, and the third drum 103 is located between the fourth drum 104 and the first and second drums 101 and 102. The volume of the four drums is in the order of first drum < second drum < third drum < fourth drum; preferably, the first drum = second drum. Since the third and fourth drums at the bottom have a larger volume, they can wash more clothes, so the drying system primarily dries the third and fourth drums. More preferably, all four drums can be dried simultaneously.

[0046] The drying system is located behind the small drum. For example, the drying system can be located behind the third drum 103, the first drum 101, or the second drum 102.

[0047] like Figures 1-4 As shown, the frame 200 is a sheet metal part. The frame 200 includes side beams 201, vertical beams 202, top beams 203, rear cross beams 204 and a base plate. The vertical beams 202 are perpendicular to the side beams 201 and the top beams 203. The vertical beams 202 are located at the four corners of the base plate and extend vertically upward. The side beams 201 are located in the middle of the left and right sides of the frame 200 or in the middle of the side near the top. The top beams 203 are located at the top of the frame 200.

[0048] The two ends of the heat pump system 100 are connected to the side beams 201, the top of the heat pump system 100 is connected to at least one top beam 203, and the air intake system is connected to the rear crossbeam 204. Preferably, the two ends of the heat pump system 100 are connected to the side beams 201 near the rear, thereby securing the heat pump system firmly to the frame 200 through the connection of the top, left, and right parts. At the same time, fixing the heat pump system in the middle and rear position of the frame places the heat pump system behind the drum, avoiding occupying unnecessary height space in the washing machine. Furthermore, fixing the heat pump system in these three positions prevents significant vibrations. Connecting the top of the heat pump system to the top beam distributes the pressure on the side beams, preventing deformation and ensuring the operational stability of the drying system.

[0049] As part of the embodiments of the present invention, the heat pump system of a multi-drum washing machine is described below: Figures 16-20 As shown, the heat pump system further includes a housing assembly, a compressor assembly 1, a condenser 2, and an evaporator 3. An air duct 4 is formed inside the housing assembly. The condenser 2 and evaporator 3 are located inside the air duct 4, and the compressor assembly 1 is located outside the air duct 4. The compressor assembly 1 is connected to the condenser 2 and evaporator 3 inside the air duct 4 via a refrigerant pipe 9. An air inlet 5 and an air outlet 8 are formed at both ends of the air duct, respectively, located near the two ends of the housing. The compressor assembly 1 is located at the end near the air inlet. Inside the air duct inside the housing, the condenser 2 and evaporator 3 are arranged sequentially from the air outlet 8 to the air inlet 5. Air from the air inlet 5 passes through the evaporator 3 and the condenser 2 for heat exchange. Furthermore, the air inlet 5 is designed with an opening facing downwards, thus avoiding contact with the compressor assembly on the upper part of the housing. The two ends of the housing assembly of the heat pump system are connected to side beams 201, and the top of the compressor assembly 1 is connected to a top beam 203.

[0050] Furthermore, a first notch 2011 is provided at the connection point of the side beam 201. The top of the side beam 201 is partially recessed downward to form the first notch 2011, and both ends of the housing assembly are connected to the first notch 2011 of the side beam 201. The notch serves to guide and limit the installation of the heat pump system, and can prevent the pre-assembled heat pump system from shaking back and forth, facilitating the subsequent installation and fixing of screws.

[0051] In this embodiment, a first connecting part 71 and a second connecting part 72 are respectively provided at both ends of the housing assembly. The first connecting part 71 and the second connecting part 72 are respectively connected to the two side beams 201. Preferably, the first connecting part 71 and / or the second connecting part 72 are connected to the first notch 2011 of the side beam 201.

[0052] Furthermore, the first connecting portion 71 and the second connecting portion 72 are configured as downwardly curved hook-shaped structures. Both ends of the housing assembly are hooked onto the side beams on the left and right sides via the first connecting portion 71 and the second connecting portion 72, providing support and fixation for the heat pump system, and also serving as a pre-positioning mechanism for the installation of the heat pump system. Even further, screw holes 75 are provided at both ends of the housing assembly near the first connecting portion 71 and the second connecting portion 72, and corresponding screw holes are also provided at the side beams 201. Screws pass through the screw holes on the housing and side beams to achieve a stable connection between the two ends of the heat pump system. Preferably, the screw holes at both ends of the housing assembly are located at the lower part of the first connecting portion 71 and the second connecting portion 72, with two screw holes 75 located on both sides of the first connecting portion 71 and two screw holes 75 located on both sides of the second connecting portion 72.

[0053] The compressor assembly 1 includes a compressor, a bracket 11, and a fixing frame 12. The bracket 11 is located outside the housing assembly, and the compressor is installed inside the bracket 11. The fixing frame 12 is located on top of the compressor. The bracket 11 is integrally formed with the housing assembly, facilitating processing and reducing the number of parts. The bracket 11 has a basin-shaped structure with an open top. The compressor is installed inside the bracket 11, which forms a surrounding support structure for the bottom and sides of the compressor near the lower part, preventing the compressor from shaking. The fixing frame 12 is located on top of the compressor. The fixing frame 12 has a structure with an open bottom. The fixing frame 12 wraps around the top and sides of the compressor near the top, providing a surrounding support structure for the upper part of the compressor. The top of the fixing frame 12 is connected to the top beam 203, thereby fixing the top of the compressor assembly and, consequently, the top of the drying system.

[0054] A flange 121 is also provided at the top of the fixed frame 12. The flange 121 is hung on the top beam 203 to fix and limit the top of the drying system. Preferably, a third connecting hole 1211 is provided on the flange 121, and a corresponding screw hole is provided on the top beam 203. A connector is used to connect the fixed frame and the top beam 203 by passing through the screw hole and the third connecting hole 1211.

[0055] Furthermore, the bracket 11 includes a support plate 111 and a support vertical plate 112. The support plate 111 is disposed at the bottom of the bracket 11 and forms an approximately flat structure (except for the protruding anti-slip structure on the plate). The support plate 111 contacts the bottom of the compressor. The support vertical plate 112 is vertically formed around the support plate 111, and the outer contour of the support vertical plate 112 forms a columnar structure. The bracket as a whole provides support and fixation for the compressor. Preferably, the height of the support vertical plate 112 near the end of the housing assembly is higher than the height near the middle part, and the top of the support vertical plate 112 is flush with the housing assembly body, which on the one hand cooperates with the housing assembly body, and on the other hand prevents the compressor from tipping over.

[0056] The mounting bracket 12 includes a top plate 122 and a surrounding plate 123. The top plate 122 matches the top profile of the compressor. The surrounding plate 123 is connected around the top plate 122 and extends upward. A flange 121 is provided on the top of the surrounding plate 123. The surrounding plate 123 is connected to the top beam 203 through the flange 121.

[0057] As part of an embodiment of the present invention, the housing assembly specifically includes an upper cover 6 and a lower cover 7, which are detachably connected. The space enclosed by the upper cover 6 and the lower cover 7 forms an air duct. A bracket 11 is disposed on the upper part of the upper cover 6 and is integrally formed with the upper cover 6, so that the upper cover 6 and the bracket 11 provide top-to-bottom support for the compressor, keeping the compressor as a whole stable. At the same time, the bracket arrangement makes the part in contact with the bottom of the compressor have a basically flat structure, avoiding the impact of the arc or bending of the top of the upper cover on the stability of the compressor. Preferably, in the cross-sectional direction, the support plate 111 of the bracket 11, the upper cover 6, and the support vertical plate 112 of the bracket 11 form an approximately triangular structure, improving the support stability of the bracket 11.

[0058] Furthermore, the screw holes, the first connecting part 71 and the second connecting part 72 at both ends of the housing assembly are all located at both ends of the lower cover 7. Since the lower cover 7 is located below the upper cover 6 and the lower cover 7 needs to withstand the forces from the compressor, the upper cover 6, the condenser 2 and the evaporator 3, setting the first connecting part 71 and the second connecting part 72 at both ends of the lower cover 7 can provide support and fixation for the entire heat pump system. If the first connecting part 71 and the second connecting part 72 are set at both ends of the upper cover, it is easy to cause the upper cover and the lower cover to separate.

[0059] Furthermore, a snap fastener 61 is provided on the edge of the upper cover 6, and a snap hole 73 is provided on the edge of the lower cover 7. The snap fastener 61 engages with the snap hole 73, achieving positioning and installation of the upper cover 6 and the lower cover 7. Preferably, a plurality of first connecting holes 62 are also provided on the edge of the upper cover 6, and a plurality of second connecting holes 74 are correspondingly provided on the edge of the lower cover 7. Both the first connecting holes 62 and the second connecting holes 74 are provided in multiples, and the upper cover 6 and the lower cover 7 are connected together by screws or other connectors passing through the first connecting holes 62 and the second connecting holes 74. More preferably, both the first connecting holes 62 and the second connecting holes 74 are screw holes.

[0060] As part of an embodiment of the present invention, in order to reduce the noise generated during the operation of the heat pump system, a vibration damping component is also provided on the heat pump system, specifically including:

[0061] A first vibration damper 14 is provided between the compressor and the bracket 11, and a second vibration damper 13 is provided between the mounting bracket 12 and the compressor. These components are used to reduce vibration and noise in the compressor, preventing large-amplitude vibrations during operation, reducing noise, and improving the compressor's operational stability. The first vibration damper 14 is a basin-shaped structure that wraps around the bottom of the compressor and matches its bottom profile. The second vibration damper 13 is an inverted basin-shaped structure that wraps around the top of the compressor and matches its top profile. Preferably, both the first vibration damper 14 and the second vibration damper 13 are made of elastic material, which provides good vibration and noise reduction.

[0062] Furthermore, vibration damping pads 70 are provided at the connection points of the first connecting part 71 and the side beam 201 and / or the connection points of the second connecting part 72 and the side beam 201. The vibration damping pads 70 prevent the housing of the drying system from directly contacting the two sheet metal parts of the side beam 201, and prevent the drying system from vibrating together with the frame and the box.

[0063] As part of the embodiments of the present invention, the air outlet system of a multi-drum washing machine is described below: Figures 9-15As shown, an air inlet duct 51 is provided at the air inlet 5 of the heat pump system 100. At least a first air outlet duct 53 and a second air outlet duct 54 are connected to the air inlet duct 51. The first air outlet duct 53 is connected to the lower washing drum, and the second air outlet duct 54 is connected to the upper washing drum. An adjustment device 50 is provided at the connection point between the air inlet duct 51 and the first and second air outlet ducts 53 and 54. The adjustment device 50 is connected to the first air outlet duct 53 and / or the second air outlet duct 54, respectively. The first and second air outlet ducts 53 and 54 are connected to different washing drums. The adjustment device 50 controls the connection between the air inlet duct 51 and at least one air outlet duct. The adjustment device 50 can selectively control the flow of hot and humid air from different washing drums into the heat pump system, achieving hot air circulation to at least one washing drum, thereby drying at least one washing drum, or simultaneously drying two or more washing drums.

[0064] like Figure 2 As shown, the air outlet system in this embodiment also includes a third air outlet duct 55. One end of the third air outlet duct 55 is connected to the second air outlet duct 54, and the other end is connected to the first drum 101 and / or the second drum 102. The first drum 101 and / or the second drum 102 can be dried through the third air outlet duct 55. Preferably, an adjustment switch can be provided at the connection between the third air outlet duct 55 and the second air outlet duct 54. The on / off state of the third air outlet duct 55 can be controlled by the adjustment switch, thereby selectively drying the washing drum connected to the third air outlet duct 55.

[0065] like Figure 4 As shown, the drying system provided in this embodiment can also dry only the third cylinder 103, that is, the second air outlet pipe 54 is directly connected to the air inlet pipe 51, and the second air outlet pipe 54 is connected to the third cylinder 103, omitting the setting of the adjustment device, and the drying system directly dries the third cylinder.

[0066] like Figure 5 As shown, the drying system provided in this embodiment can also dry only the fourth cylinder 104, that is, the first air outlet pipe 53 is directly connected to the air inlet pipe 51, and the first air outlet pipe 53 is connected to the fourth cylinder 104, omitting the setting of the adjustment device, and the drying system directly dries the fourth cylinder 104.

[0067] like Figures 11-15As shown, the regulating device 50 is configured as a three-way structure, comprising an integrated main pipe 501, a first air outlet branch pipe 503, and a second air outlet branch pipe 504, forming a three-way structure. The integrated main pipe 501 is connected to the air inlet pipe 51 (or the air inlet pipe 51 can be omitted and directly connected to the air inlet 5), the first air outlet branch pipe 503 is connected to the first air outlet pipe 53, and the second air outlet branch pipe 504 is connected to the second air outlet pipe 54. A regulating valve 52 is installed at the intersection of the integrated main pipe 501, the first air outlet branch pipe 503, and the second air outlet branch pipe 504. The regulating valve 52 controls the on / off connection between the integrated main pipe 501 and the first air outlet branch pipe 503, and between the integrated main pipe 501 and the second air outlet branch pipe 504, thereby selectively providing hot air to different washing drums.

[0068] In this embodiment, the first regulating valve 52 includes a first valve plate 521, a first impeller 522, a first convex shroud 523, and a first knob 524. The first knob 524 is connected to the first impeller 522. The controller controls the first knob 524 to drive the first impeller 522 to rotate. The first impeller 522 contacts the first valve plate 521, and the first impeller 522 pushes the first valve plate 521 to rotate and can maintain it at a certain angle. The rotation of the first impeller 522 drives the first valve plate 521 to open or close the connection between the integrated main pipe 501 and the first air outlet branch pipe 503, or the connection between the integrated main pipe 501 and the second air outlet branch pipe 504. The area of ​​the first valve plate 521 is larger than the radial area of ​​the first air outlet branch pipe 503 and the second air outlet branch pipe 504. Correspondingly, the side wall of the first regulating valve 52 is also provided with an outwardly protruding first convex 523. The first convex 523 is located on the side opposite to the second air outlet branch pipe 504. The first convex 523 provides space for the rotation of the first impeller 522 and the first valve plate 521, ensuring that the first impeller 522 and the first valve plate 521 can rotate freely, and at the same time ensuring that the first valve plate 521 can seal tightly when closing the first air outlet branch pipe 503 or the second air outlet branch pipe 504.

[0069] like Figure 13 As shown, when the controller receives the drying command for the third cylinder, it controls the first knob 524 to drive the first impeller 522 to rotate to a specific angle. At this time, the first valve plate 521 seals the first air outlet branch pipe 503, the integrated main pipe 501 is connected to the second air outlet branch pipe 504, and then the air inlet pipe 51 is connected to the second air outlet pipe 54. The hot air from the third cylinder enters the air inlet pipe 51 after passing through the second air outlet pipe 54 and the regulating device 50, and then enters the heat pump system 100 for heat exchange circulation, thereby drying the third cylinder.

[0070] like Figure 15As shown, when the controller receives the drying command for the fourth cylinder, it controls the first knob 524 to drive the first impeller 522 to rotate to a specific angle. At this time, the first valve plate 521 seals the second air outlet branch pipe 504, the integrated main pipe 501 is connected to the first air outlet branch pipe 503, and then the air inlet pipe 51 is connected to the first air outlet pipe 53. The hot air in the fourth cylinder 104 enters the air inlet pipe 51 after passing through the first air outlet pipe 53 and the regulating device 50, and then enters the heat pump system 100 for heat exchange circulation, thereby drying the fourth cylinder.

[0071] like Figure 14 As shown, when the controller receives the instruction to dry the third and fourth cylinders simultaneously, it controls the first knob 524 to drive the first impeller 522 to rotate to a specific angle. At this time, the first valve plate 521 is in the middle position, and the air inlet pipe 51 is connected to the first air outlet branch pipe 503 and the second air outlet branch pipe 504. Thus, the air inlet pipe 51 is connected to the first air outlet pipe 53 and the second air outlet pipe 54. The hot air from the third cylinder enters the air inlet pipe 51 after passing through the second air outlet pipe 54 and the regulating device 50. The hot air from the fourth cylinder 104 enters the air inlet pipe 51 after passing through the first air outlet pipe 53 and the regulating device 50, and then enters the heat pump system 100 for heat exchange circulation, thereby achieving simultaneous drying of the third and fourth cylinders.

[0072] Preferably, a regulating switch similar to or the same as the regulating device can be installed at the connection between the second air outlet duct 54 and the third air outlet duct 55. This allows the regulating device to control the on / off state of the connection, enabling selective or simultaneous drying of the three cylinders. Similarly, selective or simultaneous drying of four or even more cylinders can be achieved.

[0073] As part of the embodiments of the present invention, the air intake system of a multi-drum washing machine is described below:

[0074] like Figures 3-8 As shown, the air intake system includes at least one air intake duct and a volute 84. One end of the volute 84 is connected to the air outlet duct 81, and the other end is connected to at least one air intake duct. The volute 84 guides the hot air generated by the heat pump system 100 into the at least one air intake duct through the air outlet duct 81 to dry the clothes in the washing drum.

[0075] A connecting block 841 is provided on the outer edge of the volute 84. The connecting block 841 is connected to the rear crossbeam 204 of the frame 200. A vibration damping plate 842 is provided at the connection between the connecting block 841 and the frame 200. Since the volute is equipped with a fan 87, the air is prone to vibration when it guides the dry hot air generated by the heat pump system into the air inlet pipe. The vibration damping plate can effectively dampen the volute and prevent the volute from rubbing against the frame and generating noise when it guides the air in and vibrates.

[0076] Furthermore, the connecting block 841 is provided with a screw connecting post, and the screw passes through the connector to fix the connecting block to the frame. The damping plate 842 is provided between the connecting block 841 and the screw and / or between the connecting block 841 and the frame to avoid noise generated by direct contact between sheet metal parts or between metal and sheet metal parts.

[0077] A second notch 2041 is provided on the rear crossbeam 204. The volute 84 is connected to the second notch 2041 on the rear crossbeam. The second notch 2041 limits the connection between the volute and the rear crossbeam 204, and at the same time prevents the pre-assembled volute from moving significantly left and right on the rear crossbeam 204.

[0078] A corrugated connecting pipe 843 is provided between at least one air inlet pipe and the volute 84 to reduce vibration of the air inlet pipe. The vibration generated by the volute 84 is effectively buffered at the corrugated connecting pipe 843, preventing the air inlet pipe from vibrating significantly when the volute 84 vibrates, thereby preventing the connection between the air inlet pipe and the volute from breaking or leaking.

[0079] In this embodiment, the air intake system includes at least a first air intake duct 82 and a second air intake duct 83. The first air intake duct 82 and the second air intake duct 83 are connected to the volute 84. The other end of the volute 84 is connected to the air outlet 8 of the drying air duct via an air outlet duct 81. A corrugated connecting pipe 843 is disposed after the first air intake duct 82 and the second air intake duct 83 and before the volute 84. Optionally, the first air intake duct 82 and the second air intake duct 83 are connected and then connected to the volute 84. The corrugated connecting pipe 843 is disposed between the connection point of the first air intake duct 82 and the second air intake duct 83 and the volute 84.

[0080] An air inlet valve 85 is provided at the connection between the first air inlet duct 82 and the second air inlet duct 83. By adjusting the air inlet valve 85, the volute 84 is connected to the first air inlet duct 82 and / or the second air inlet duct 83, realizing hot air circulation drying of at least one drum. Furthermore, an electric heater 86 is provided between the air inlet valve 85 and the volute 84. The electric heater 86 further heats the hot air that is about to pass through the air inlet valve 85, improving the drying efficiency of the clothes entering the drum.

[0081] In this embodiment, such as Figures 6-9As shown (the corrugated connecting pipe 843 is omitted in the figure to clearly show the structure of the air inlet valve), the air inlet valve 85 includes a second valve plate 851, a second impeller 852, and a second knob 854. The controller controls the second knob 854 to drive the second impeller 852 to rotate. The second impeller 852 pushes the second valve plate 851 to rotate and controls the second valve plate 851 to be maintained at a certain angle. Furthermore, a second protrusion 853 is also provided at the air inlet valve 85. The second protrusion 853 is located on the side opposite to the second air inlet pipe 83. The second protrusion 853 protrudes away from the second air inlet pipe 83. The setting of the second protrusion 853 provides space for the rotation of the second impeller 852, ensuring that the second impeller 852 and the valve plate can rotate freely, while ensuring a tight seal when the second valve plate 851 closes the first air inlet pipe 82 or the second air inlet pipe 83.

[0082] Furthermore, the air inlet system is located at the rear of the third drum 103. The first air inlet pipe 82 is connected to the fourth drum 104, and the second air inlet pipe 83 is connected to the third drum 103. By adjusting the air inlet valve 85, the volute 84 is connected to the first air inlet pipe 82 and / or the second air inlet pipe 83, allowing simultaneous or selective drying of the third drum 103 and the fourth drum 104. Preferably, when there are three or more washing drums, the two air inlet pipes prioritize drying the two larger washing drums.

[0083] In a preferred embodiment, the air intake system further includes a third air intake duct 88, one end of which is connected to the second air intake duct 83, and the other end is connected to the first cylinder 101 and / or the second cylinder 102. The first cylinder 101 and / or the second cylinder 102 can be dried through the third air intake duct 88. Preferably, an air intake regulating valve can also be provided at the connection between the third air intake duct 88 and the second air intake duct 83, which can selectively control the on / off state of the third air intake duct 88 and / or the second air intake duct 83.

[0084] like Figure 7 As shown, when the controller receives the drying command for the fourth cylinder, it controls the second knob 854 to drive the second impeller 852 to rotate to a specific angle. At this time, when the second valve plate 851 is in state a, the second valve plate 851 seals the second air inlet pipe 83, and the first air inlet pipe 82 is connected to the volute 84. The hot air in the drying air duct can pass normally through the air outlet pipe 81 and the volute 84 and enter the interior of the fourth cylinder 104, and only the interior of the fourth cylinder 104 is dried normally.

[0085] like Figure 7As shown, when the controller receives a drying command for simultaneous drying of the third and fourth cylinders, it controls the second knob 854 to drive the second impeller 852 to rotate to a specific angle. At this time, when the second valve plate 851 is in state b, the second valve plate 851 is in the middle position. The second air inlet pipe 83 and the first air inlet pipe 82 are both connected to the volute 84. The hot air in the drying air duct can pass normally through the air outlet pipe 81 and the volute 84 and enter the interior of the third cylinder 103 and the fourth cylinder 104, so as to carry out normal drying of the interior of the third cylinder 103 and the fourth cylinder 104 at the same time.

[0086] like Figure 7 As shown, when the controller receives the drying command for the third cylinder, it controls the second knob 854 to drive the second impeller 852 to rotate to a specific angle. At this time, when the second valve plate 851 is in state c, the second valve plate 851 seals the first air inlet pipe 82, and the second air inlet pipe 83 is connected to the volute 84. The hot air in the drying air duct can pass normally through the air outlet pipe 81 and the volute 84 and enter the interior of the third cylinder 103, and only the interior of the third cylinder 103 is dried normally.

[0087] During the drying operation, the hot and humid air discharged from different washing drums passes through different air outlet ducts and air inlet ducts 51, and then enters the air duct 4 of the heat pump system. After passing through the evaporator 3, it is cooled down. Some condensate may be generated after cooling, and the condensate is discharged to the outside of the heat pump system 100 through the outlet. The cooled, dry air only needs to pass through the condenser 2 for heat exchange before circulating back into the washing drum through the air outlet 8 and the air inlet ducts of each drum to dry the clothes inside. The following example uses the drying of the third and fourth drums:

[0088] like Figure 7 and 13 As shown, when the controller receives the drying command from the third drum, it controls the first knob 524 to rotate the first impeller 522 to a specific angle. At this time, the first valve plate 521 seals the first air outlet pipe 53, the air inlet pipe 51 is connected to the second air outlet pipe 54, the second valve plate 851 of the air inlet system is in state c, the second valve plate 851 seals the first air inlet pipe 82, and the second air inlet pipe 83 is connected to the volute. The hot and humid air inside the third drum 103 can normally enter the heat pump system air duct through the second air outlet pipe 54, the air inlet pipe 51, and the air inlet 5. The dry hot air after heat exchange by the heat pump system enters the third drum through the air outlet pipe 81, the volute 84, and the second air inlet pipe 83 to circulate and dry the clothes inside the third drum.

[0089] like Figure 7 and 15As shown, when the controller receives the drying command from the fourth drum, it controls the first knob 524 to rotate the first impeller 522 to a specific angle. At this time, the first valve plate 521 seals the second air outlet pipe 54, and the air outlet pipe 51 is connected to the first air outlet pipe 53. The second valve plate 851 of the air inlet system is in state a, and the second valve plate 851 seals the second air inlet pipe 83. The first air inlet pipe 82 is connected to the volute. The hot and humid air inside the fourth drum 104 can pass normally through the first air outlet pipe 53, the air inlet pipe 51, and the air inlet 5 to enter the air duct of the heat pump system. The dry hot air after heat exchange through the heat pump system enters the fourth drum through the air outlet pipe 81, the volute 84, and the first air inlet pipe 82 to dry the clothes inside the fourth drum.

[0090] like Figure 7 and 14 As shown, when the controller receives the instruction to dry the third and fourth cylinders simultaneously, it controls the first knob 524 to drive the first impeller 522 to rotate to a specific angle. At this time, the first valve plate 521 is in the middle position, and the air outlet pipe 51 is connected to the first air outlet pipe 53 and the second air outlet pipe 54. The second valve plate 851 of the air inlet system is in position b, and the first air inlet pipe 82 and the second air inlet pipe 83 are connected to the volute 84. The hot and humid air inside the third cylinder 103 can normally enter the heat pump system duct through the second air outlet duct 54, air inlet duct 51, and air inlet 5. The dry hot air after heat exchange by the heat pump system enters the third cylinder through the air outlet duct 81, volute 84, and second air inlet duct 83. The hot and humid air inside the fourth cylinder 104 can normally enter the heat pump system duct through the first air outlet duct 53, air inlet duct 51, and air inlet 5. The dry hot air after heat exchange by the heat pump system enters the fourth cylinder through the air outlet duct 81, volute 84, and first air inlet duct 82. At the same time, the clothes in the third and fourth cylinders are dried.

[0091] As part of the embodiments of the present invention, a multi-drum washing machine is also provided, including the multi-drum washing machine drying system described above.

[0092] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A multi-drum washing machine drying system, characterized in that, The device includes a frame (200), at least two washing drums, an air inlet system, a heat pump system (100), and an air outlet system. The frame (200) is made of sheet metal. The heat pump system (100) has an air outlet (8) and an air inlet (5) at both ends. One end of the air inlet system is connected to the air outlet (8) of the heat pump system (100), and the other end of the air inlet system is connected to at least two washing drums. One end of the air outlet system is connected to the air inlet (5) of the heat pump system, and the other end of the air outlet system is connected to at least two washing drums. The frame (200) includes a side beam (201), a vertical beam (202), a top beam (203), and a rear cross beam (204). The side beam (201) is located in the middle of the side of the frame (200) or near the upper part of the middle of the side. The two ends of the heat pump system (100) are connected to the side beam (201) near the rear side. The top of the heat pump system (100) is connected to the top beam (203).

2. The multi-drum washing machine drying system according to claim 1, characterized in that, The washing drum includes a first drum (101), a second drum (102), a third drum (103), and a fourth drum (104). The first drum (101) and the second drum (102) are arranged side by side at the top, the fourth drum (104) is arranged at the bottom, and the third drum (103) is located between the fourth drum (104) and the first drum (101) and the second drum (102).

3. The multi-drum washing machine drying system according to claim 1, characterized in that, The air intake system is connected to the rear crossbeam (204).

4. The multi-drum washing machine drying system according to claim 3, characterized in that, The heat pump system (100) includes a housing assembly, a compressor assembly (1), a condenser (2) and an evaporator (3). An air duct (4) is formed inside the housing assembly. The condenser (2) and the evaporator (3) are disposed inside the air duct (4). The compressor assembly (1) is disposed outside the air duct (4). The compressor assembly (1) includes a compressor, a bracket (11) and a mounting bracket (12). The bracket (11) is disposed outside the housing assembly. The compressor is installed inside the bracket (11). The mounting bracket (12) is disposed on the upper part of the compressor and is connected to the top beam (203).

5. The multi-drum washing machine drying system according to claim 1, characterized in that, An air inlet pipe (51) is provided at the air inlet (5) of the heat pump system (100). At least a first air outlet pipe (53) and a second air outlet pipe (54) are connected to the air inlet pipe (51). An adjustment device (50) is provided at the connection position between the air inlet pipe (51) and the first air outlet pipe (53) and the second air outlet pipe (54). The adjustment device (50) is connected to the first air outlet pipe (53) and / or the second air outlet pipe (54).

6. The multi-drum washing machine drying system according to claim 5, characterized in that, The regulating device (50) includes an integrated main pipe (501), a first air outlet branch pipe (503), and a second air outlet branch pipe (504), which form a three-way structure.

7. The multi-drum washing machine drying system according to claim 1, characterized in that, The air intake system includes at least a first air intake pipe (82), a second air intake pipe (83), and a volute (84). The first air intake pipe (82) and the second air intake pipe (83) are connected to the volute (84). The other end of the volute (84) is connected to the air outlet (8) of the drying air duct through an air outlet pipe (81).

8. The multi-drum washing machine drying system according to claim 7, characterized in that, An air inlet valve (85) is provided at the connection between the first air inlet pipe (82) and the second air inlet pipe (83). By adjusting the air inlet valve (85), the volute (84) is connected to the first air inlet pipe (82) and / or the second air inlet pipe (83) to achieve hot air circulation drying of at least one cylinder.

9. The multi-drum washing machine drying system according to claim 8, characterized in that, The air inlet valve (85) includes a second valve plate (851), a second impeller (852), and a second knob (854). The controller controls the second knob (854) to drive the second impeller (852) to rotate, and the second impeller (852) pushes the second valve plate (851) to rotate.

10. A multi-drum washing machine, characterized in that, The drying system of a multi-drum washing machine according to any one of claims 1 to 8, wherein the heat pump system (100) of the drying system is disposed on the rear side of at least one washing drum.

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