A twin-drum washing machine

Abstract

The present invention provides a twin-drum washing machine, comprising a frame and an air inlet duct assembly, wherein a first washing drum and a second washing drum are arranged side by side in the frame; the frame comprises a front bracket, which is arranged near the drum opening of the first washing drum and the drum opening of the second washing drum; the air inlet duct assembly comprises a main air inlet duct, a first branch air inlet duct and a second branch air inlet duct, the first branch air inlet duct connects the main air inlet duct and the first washing drum, and the second branch air inlet duct connects the main air inlet duct and the second washing drum; the front bracket comprises an upper crossbeam, a middle crossbeam and a right upright post, the main air inlet duct is arranged on the middle crossbeam, the first branch air inlet duct comprises an arc segment and a straight segment, the arc segment is arranged on the right upright post, and the straight segment is connected to the arc segment and is arranged on the upper crossbeam; the force of the air inlet duct assembly is balanced, deformation and bending of the washing machine are prevented during operation, and it is ensured that the air inlet duct assembly can smoothly convey the drying airflow to the washing drum.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a twin-drum washing machine. Background Art

[0002] In recent years, the development of the washing machine industry has shown a diversified trend, and with the improvement of people's living standards, the healthy zoning washing method has gradually developed into the core concept of washing machine product research and development. In order to adapt to consumers' growing demand for healthy washing, various types of twin-drum washing machines have been developed on the market; especially heat pump twin-drum washing machines, which have good care effects and low damage to clothes and are popular with consumers; a twin-drum washing machine with both drums washing and drying in one is proposed, and the drying module includes an air inlet duct assembly. In the existing technology, the air inlet duct assembly is mainly fixed on the side wall of the washing drum or on the frame; but due to the unbalanced force on the air inlet duct assembly, the air inlet duct assembly is prone to deformation and bending during the operation of the washing machine, which leads to the inlet duct assembly being unable to smoothly transport the drying airflow to the washing drum. Summary of the Invention

[0003] In view of this, the present invention provides a twin-drum washing machine to solve the problems in the prior art that the air inlet duct assembly is subjected to unbalanced force, is prone to deformation and bending, and thus cannot smoothly deliver the drying airflow to the washing drum.

[0004] The present invention provides a twin-drum washing machine, comprising:

[0005] a frame, wherein a first washing tub and a second washing tub are arranged side by side inside the frame; the frame includes a front bracket, the front bracket is arranged near the barrel opening of the first washing tub and the barrel opening of the second washing tub; the first washing tub is formed with a first air inlet, and the second washing tub is formed with a second air inlet;

[0006] An air inlet duct assembly is arranged on the front bracket and includes a main air inlet duct, a first branch air inlet duct and a second branch air inlet duct, the main air inlet duct is located between the first washing drum and the second washing drum; one end of the first branch air inlet duct is connected to the main air inlet duct, and the other end of the first branch air inlet duct extends around the side wall of the first washing drum and is connected to the first air inlet; one end of the second branch air inlet duct is connected to the main air inlet duct, and the other end of the second branch air inlet duct extends toward the second washing drum and is connected to the second air inlet, so that the main air inlet duct can transport drying air to the first washing drum and the second washing drum respectively.

[0007] Further optionally, the front bracket includes an upper crossbeam, a middle crossbeam and a right upright post, the upper crossbeam is located above the first washing tub, the middle crossbeam is located between the first washing tub and the second washing tub, and the right upright post is located to the right of the first washing tub and the second washing tub;

[0008] The main air inlet duct is arranged on the middle crossbeam, and the first branch air inlet duct includes an arc segment and a straight segment. The arc segment is adapted to the first washing tub and is arranged on the right column; the straight segment is connected to the arc segment and is arranged on the upper crossbeam.

[0009] Further optionally, the main air inlet duct is formed with points c1 and c2 connected to the middle crossbeam, the distance between points c1 and c2 is c1c2; the horizontal force at point c1 is F c11 , the vertical force at point c1 is F c12 , the horizontal force at point c2 is F c21 , the vertical force at point c2 is F c22 , meet: 122mm<c1c2<162mm,F c11 =k c11 *F, F c12 =k c12 *F, F c21 =k c21 *F G , F c22 =k c22 *F G ;

[0010] Wherein, F is the resonance force of the twin-tub washing machine, F G is the gravity of the air inlet duct assembly, 0.2<k c11 <0.3, 0.2 <k c12 <0.3, 0.2 <k c21 <0.3, 0.2 <k c22 <0.3.

[0011] Further optionally, the straight line segment is formed with a point b1 and a point b2 connected to the upper beam, the distance between the point b1 and the point b2 is b1b2, and the horizontal force at the point b1 is F b11 , the vertical force at point b1 is F b12 , the horizontal force at point b2 is F b21 , the vertical force at point b2 is F b22 ; meet: 200mm<b1b2<240mm, F b11 =k b11 *F, F b12 =k b12 *F, F b21 =k b21 *F G , F b22 =k b22 *F G ;

[0012] Among them, 0.2<k b11 <0.3, 0.2 <k b12 <0.3, 0.2 <k b21 <0.3, 0.2 <k b22 <0.3.

[0013] Further optionally, the middle cross beam is formed with points C1 and C2 connected to the main air inlet duct; fixing holes are formed at points C1 and C2, or slots are formed at points C1 and C2, or one is formed with a fixing hole and the other is formed with a slot.

[0014] Further optionally, the middle cross beam includes a main body portion and two connecting portions, and the two connecting portions are respectively provided at two ends of the main body portion and connected to the main body portion;

[0015] The main body is formed with an anti-bending structure, which is a convex anti-bending structure and is provided in plurality. The plurality of anti-bending structures are arranged in sequence along the length direction of the middle cross beam; each of the connecting parts is formed with a reinforcing rib, and the reinforcing ribs extend along the width direction of the middle cross beam.

[0016] Further optionally, the anti-bending structure includes a first anti-bending structure and a second anti-bending structure, the first anti-bending structure is L-shaped, and the second anti-bending structure is U-shaped; the C1 point is set on the inner side of the second anti-bending structure, and the C2 point is set on the outer side of the second anti-bending structure.

[0017] Further optionally, the front bracket also includes a left column; each of the connecting parts is bent into shape, one connecting part extends toward the left column and is connected to the left column, and the other connecting part extends toward the right column and is connected to the right column.

[0018] Further optionally, the middle cross beam is formed with an opening; the anti-bending structure further includes a third anti-bending structure, the third anti-bending structure is formed on a side wall of the opening and is arranged away from the second anti-bending structure;

[0019] The twin-tub washing machine further includes a front panel, which is disposed on the third anti-bending structure and has a through hole formed therein, the through hole corresponding to the opening.

[0020] Further optionally, the frame as a whole is a rectangular parallelepiped structure, a base is provided at the bottom of the frame, a first side panel is provided on the left side of the frame, a second side panel is provided on the right side of the frame, and a back panel is provided on the rear side of the frame.

[0021] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0022] The front bracket includes an upper crossbeam, a middle crossbeam and a right column. The air inlet duct assembly includes a main air inlet duct, a first branch air inlet duct and a second branch air inlet duct. The first branch air inlet duct includes an arc section and a straight section. The main air inlet duct is arranged on the middle crossbeam, the arc section is adapted to the first washing drum and is arranged on the right column, and the straight section is arranged on the upper crossbeam. The front bracket balances the force of the air inlet duct assembly to prevent deformation and bending of the washing machine during operation, and ensures that the air inlet duct assembly can smoothly transport the drying airflow to the washing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0025] Figure 1 This is a schematic diagram of the assembly structure of the air inlet duct assembly and the box module embodiment provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the air inlet duct assembly and box module provided by the present invention;

[0027] Figure 3a and Figure 3b This is a structural diagram of a middle crossbeam embodiment 1 provided by the present invention;

[0028] Figure 4 This is a schematic structural diagram of a second embodiment of the middle cross beam provided by the present invention;

[0029] Figure 5 This is a structural diagram of a third embodiment of the middle cross beam provided by the present invention;

[0030] Figure 6a and Figure 6b This is a schematic structural diagram of an embodiment of a box module provided by the present invention;

[0031] Figure 7 A schematic structural diagram of an embodiment of a twin-drum washing machine provided by the present invention;

[0032] Figure 8 A schematic structural diagram of an embodiment of an air inlet duct assembly provided by the present invention;

[0033] In the picture:

[0034] 1-frame; 11-left column; 12-right column; 121-A fixed structure; 13-middle crossbeam; 131-first anti-bending structure; 132-second anti-bending structure; 133-third anti-bending structure; 1331-D fixed structure; 134-C fixed structure; 135-reinforcement rib; 136-opening; 14-upper crossbeam; 141-B fixed structure; 15-lower crossbeam;

[0035] 2-air inlet assembly; 21-first air inlet; 211-arc segment; 212-straight segment; 22-second air inlet; 23-main air inlet;

[0036] 3-box module; 31-front panel; 311-through hole; 32-base; 33-first side panel; 34-second side panel;

[0037] 41-first washing tub; 42-second washing tub. DETAILED DESCRIPTION

[0038] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0039] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0040] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0041] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0042] In existing twin-drum washing machines, the air inlet duct assembly is primarily fixed to the side wall of the washing drum or to the frame. However, due to the unbalanced force on the air inlet duct assembly, the air inlet duct assembly is prone to deformation and bending during operation, which in turn prevents the air inlet duct assembly from smoothly delivering dry air to the washing drum.

[0043] The present invention creatively provides a twin-drum washing machine, which includes a frame and an air inlet duct assembly, wherein a first washing drum and a second washing drum are arranged side by side in the frame; the frame includes a front bracket, which is arranged near the barrel opening of the first washing drum and the barrel opening of the second washing drum; the air inlet duct assembly is arranged on the front bracket and the air inlet duct assembly includes a main air inlet duct, a first branch air inlet duct and a second branch air inlet duct, the first branch air inlet duct extends toward the first washing drum and connects the main air inlet duct and the first washing drum, and the second branch air inlet duct extends toward the second washing drum and connects the main air inlet duct and the second washing drum; in this way, the main air inlet duct can respectively convey drying air to the first washing drum and the second washing drum; the front bracket balances the force of the air inlet duct assembly, prevents deformation and bending of the washing machine during operation, and ensures that the air inlet duct assembly can smoothly convey the drying air to the washing drum.

[0044] Example 1

[0045] like Figure 1 and Figure 2As shown, this embodiment provides a twin-drum washing machine, which includes a frame 1, a first washing drum 41, a second washing drum 42 and a drying module; the first washing drum 41 and the second washing drum 42 are arranged side by side inside the frame 1, the axis of the first washing drum 41 is parallel to the axis of the second washing drum 42, and the barrel opening of the first washing drum 41 and the barrel opening of the second washing drum 42 are in the same direction; the first washing drum 41 is formed with a first air inlet, and the second washing drum 42 is formed with a second air inlet; the frame 1 includes a front bracket, which is arranged near the barrel opening of the first washing drum 41 and the barrel opening of the second washing drum 42; the drying module includes an air inlet duct assembly 2 that can convey drying air to the first washing drum 41 and the second washing drum 42, the air inlet duct assembly 2 is arranged on the front bracket and the air inlet duct assembly 2 includes a main air inlet duct 23, a first branch air inlet duct 21 and a second branch air inlet duct 2 2. The main air inlet duct 23 is located between the first washing drum 41 and the second washing drum 42. The main air inlet duct 23 is formed with a main air inlet, a first air outlet, and a second air outlet. Dry air can enter the main air inlet duct 23 through the main air inlet; one end of the first branch air inlet duct 21 is connected to the first air outlet, and the other end of the first branch air inlet duct 21 extends around the side wall of the first washing drum 41 and is connected to the first air inlet. A portion of the dry air in the main air inlet duct 23 enters the first washing drum 41 through the first branch air inlet duct 21, and can dry the clothes in the first washing drum 41; one end of the second branch air inlet duct 22 is connected to the second air outlet, and the other end of the second branch air inlet duct 22 extends to the second washing drum 42 and is connected to the second air inlet. Another portion of the dry air in the main air inlet duct 23 enters the second washing drum 42 through the second branch air inlet duct 22, and can dry the clothes in the second washing drum 42;

[0046] Specifically, the first washing tub 41 and the second washing tub 42 are arranged side by side up and down, the first air inlet is located above the tube opening of the first washing tub 41, and the second air inlet is located above the tube opening of the second washing tub 42; the front bracket includes a left column 11, a right column 12, a middle crossbeam 13, an upper crossbeam 14 and a lower crossbeam 15, the left column 11 and the right column 12 are arranged at intervals left and right, and the upper crossbeam 14, the middle crossbeam 13 and the lower crossbeam 15 are arranged at intervals between the left column 11 and the right column 12; the upper crossbeam 14 is located above the first washing tub 41, the middle crossbeam 13 is located between the first washing tub 41 and the second washing tub 42, and the lower crossbeam 15 is located below the second washing tub 42; the left column 11 is located to the left of the first washing tub 41 and the second washing tub 42, and the right column 12 is located to the right of the first washing tub 41 and the second washing tub 42; the first air inlet 21 and the first air inlet, as well as the second air inlet 22 and the second air inlet, are all flexibly connected;

[0047] The first air inlet 21, the main air inlet 23 and the second air inlet 22 are arranged in sequence up and down. The main air inlet 23 is arranged on the middle beam 13. The first air inlet 21 includes an arc section 211 and a straight section 212. The structure of the arc section 211 is adapted to the structure of the first washing tub 41. The arc section 211 is arranged on the right column 12; the straight section 212 is connected to the arc section 211 and is arranged on the upper beam 14. The straight section 212 extends along the upper beam 14; the front bracket is connected to the air inlet duct assembly 2 at multiple locations, so that the air inlet duct assembly is evenly stressed, ensuring that the air inlet duct assembly can smoothly transport drying air to the first washing tub 41 and the second washing tub 42 when the washing machine is running.

[0048] Aiming at the problem that the air inlet duct assembly 2 is easily deformed and bent due to the unbalanced force on the air inlet duct assembly 2 during the operation of the washing machine, Figure 8 As shown, this embodiment proposes that the main air inlet duct 23 is formed with points c1 and c2 connected to the middle cross beam 13, and the distance between points c1 and c2 is c1c2; the horizontal force at point c1 is F c11 , the vertical force at point c1 is F c12 , the horizontal force at point c2 is F c21 , the vertical force at point c2 is F c22 , meet: 122mm<c1c2<162mm,F c11 =k c11 *F, F c12 =k c12 *F, F c21 =k c21 *F G , F c22 =k c22 *F G ; Among them, F is the resonance force of the twin-tub washing machine, F G is the gravity of the air inlet duct assembly, 0.2<k c11 <0.3, 0.2 <k c12 <0.3, 0.2 <k c21 <0.3, 0.2 <k c22 <0.3;

[0049] Preferably, c1c2=142mm, k c11 =k c12 =k c21 =k c22 =0.25.

[0050] Furthermore, the straight line segment 212 is formed with points b1 and b2 connected to the upper beam 14. The distance between points b1 and b2 is b1b2. The horizontal force at point b1 is F b11 , the vertical force at point b1 is F b12, the horizontal force at point b2 is F b21 , the vertical force at point b2 is F b22 ; meet: 200mm<b1b2<240mm, F b11 =k b11 *F, F b12 =k b12 *F, F b21 =k b21 *F G , F b22 =k b22 *F G ; Among them, 0.2<k b11 <0.3, 0.2 <k b12 <0.3, 0.2 <k b21 <0.3, 0.2 <k b22 <0.3;

[0051] Preferably, b1b2=220mm, k b11 =k b12 =k b21 =k b22 =0.25.

[0052] like Figure 3a and Figure 3b As shown, the middle cross beam 13 is formed with points C1 and C2 connected to the main air inlet duct 23; C-fixing structures 134 are formed at points C1 and C2 for fixing the main air inlet duct 23; both C-fixing structures 134 are fixing holes;

[0053] The right column 12 is formed with an A fixing structure 121 for fixing the arc segment 211 ; the upper crossbeam 14 is formed with a B fixing structure 141 for fixing the straight segment 212 .

[0054] Furthermore, to address the problem of the middle cross beam 13 being easily deformed and bent due to its low strength, this embodiment proposes that the middle cross beam 13 includes a main body and two connecting parts, which are respectively arranged at both ends of the main body and connected to the main body; the main body is formed with an anti-bending structure, which is a protrusion and is provided with multiple anti-bending structures, and the multiple anti-bending structures are sequentially arranged along the length direction of the middle cross beam 13; each connecting part is formed with a reinforcing rib, and the reinforcing ribs extend along the width direction of the middle cross beam 13, effectively strengthening the strength of the middle cross beam 13 and preventing the middle cross beam 13 from deforming, bending and shaking during the operation of the twin-tub washing machine;

[0055] The anti-bending structure is a protrusion and includes a first anti-bending structure 131 and a second anti-bending structure 132 . The first anti-bending structure 131 and the second anti-bending structure 132 are sequentially arranged between two reinforcing ribs 135 along the length direction of the middle cross beam 13 .

[0056] Specifically, each connecting part is bent into shape, one connecting part extends toward the left column 11 and is connected to the left column 11, and the other connecting part extends toward the right column 12 and is connected to the right column 12; the first anti-bending structure 131 is L-shaped, and the second anti-bending structure 132 is U-shaped; a C1 point is provided on the inner side of the second anti-bending structure 132, and a C2 point is provided on the outer side of the second anti-bending structure 132.

[0057] In order to solve the problem of inconvenient connection between the main air inlet duct 23 and the middle cross beam 13, this embodiment proposes that the middle cross beam 13 forms fixing holes at points C1 and C2; correspondingly, the main air inlet duct 23 forms fixing holes at points c1 and c2; the fixing holes of the middle cross beam 13 and the fixing holes of the main air inlet duct 23 correspond to each other, and the connection between the main air inlet duct 23 and the middle cross beam 13 is achieved by screws.

[0058] To address the problem of unreliable connection between the front panel 31 and the middle cross beam 13, this embodiment proposes that the middle cross beam 13 is formed with an opening 136; the anti-bending structure further includes a third anti-bending structure 133, which is formed on the side wall of the opening 136 and is arranged away from the second anti-bending structure 132;

[0059] The twin-tub washing machine further includes a front panel 31 , which is disposed on the third anti-bending structure 133 and has a through hole 311 formed therein, the through hole 311 corresponding to the opening 136 ;

[0060] Specifically, the third anti-bending structure 133 is formed with a D fixing structure 1331 for fixing the front panel 31; it effectively enhances the stability of the connection between the front panel 31 and the middle crossbeam 13, and solves the problem of shaking and deformation of the frame 1 and the front panel 31 when the twin-tub washing machine is running.

[0061] like Figure 6a 、 Figure 6b and Figure 7 As shown, the twin-drum washing machine also includes a cabinet module 3, which includes the frame 1 described in any one of the above items; the first washing drum 41 and the second washing drum 42 can be independently filled with water and drained to achieve zoned washing, thereby solving the problem that washing clothes in the prior art is prone to mutual infection and staining; the cabinet module 3 also includes a base 32, a first side panel 33, a second side panel 34 and a back panel; the frame 1 is a rectangular structure as a whole, a base 32 is provided at the bottom of the frame 1, and a front panel 31 is provided on the front side of the frame 1, a first side panel 33 is provided on the left side of the frame 1, a second side panel 34 is provided on the right side of the frame 1, and a back panel is provided on the rear side of the frame 1.

[0062] Example 2

[0063] like Figure 4 As shown, the difference from embodiment 1 is that one of the two C-fixing structures 134 is a fixing hole and the other is a slot.

[0064] Example 3

[0065] like Figure 5 As shown, different from embodiment 1, the two C-fixing structures 134 are both slots.

[0066] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A twin-tub washing machine, characterized in that: The twin-tub washing machine comprises: a frame, wherein a first washing tub and a second washing tub are arranged side by side inside the frame; the frame includes a front bracket, the front bracket is arranged near the barrel opening of the first washing tub and the barrel opening of the second washing tub; the first washing tub is formed with a first air inlet, and the second washing tub is formed with a second air inlet; an air inlet duct assembly disposed on the front bracket and comprising a main air inlet duct, a first branch air inlet duct, and a second branch air inlet duct, the main air inlet duct being located between the first washing tub and the second washing tub; one end of the first branch air inlet duct being in communication with the main air inlet duct, the other end of the first branch air inlet duct extending around a side wall of the first washing tub and in communication with the first air inlet; one end of the second branch air inlet duct being in communication with the main air inlet duct, the other end of the second branch air inlet duct extending toward the second washing tub and in communication with the second air inlet, so that the main air inlet duct can deliver drying air to the first washing tub and the second washing tub, respectively; The front bracket includes an upper crossbeam, a middle crossbeam, and a right upright column, wherein the upper crossbeam is located above the first washing tub, the middle crossbeam is located between the first washing tub and the second washing tub, and the right upright column is located to the right of the first washing tub and the second washing tub; the main air inlet duct is provided on the middle crossbeam, and the first branch air inlet duct includes an arcuate segment and a straight segment, wherein the arcuate segment is adapted to the first washing tub and is provided on the right upright column; the straight segment is connected to the arcuate segment and is provided on the upper crossbeam; The main air inlet duct is formed with points c1 and c2 connected to the middle crossbeam, the distance between points c1 and c2 is c1c2; the horizontal force at point c1 is F c11 , the vertical force at point c1 is F c12 , the horizontal force at point c2 is F c21 , the vertical force at point c2 is F c22 , meet: 122mm<c1c2<162mm, F c11 =k c11 *F, F c12 =k c12 *F, F c21 =k c21 *F G , F c22 =k c22 *F G Wherein, F is the resonance force of the twin-tub washing machine, F G is the gravity of the air inlet duct assembly, 0.2<k c11 <0.3, 0.2 <k c12 <0.3, 0.2 <k c21 <0.3, 0.2 <k c22 <0.3; The straight line segment is formed with points b1 and b2 connected to the upper beam, the distance between the points b1 and b2 is b1b2, and the horizontal force at the point b1 is F b11 , the vertical force at point b1 is F b12 , the horizontal force at point b2 is F b21 , the vertical force at point b2 is F b22 ; meet: 200mm<b1b2<240mm, F b11 =k b11 *F, F b12 =k b12 *F, F b21 =k b21 *F G , F b22 =k b22 *F G ; Among them, 0.2<k b11 <0.3, 0.2 <k b12 <0.3, 0.2 <k b21 <0.3, 0.2 <k b22 <0.

3.

2. The twin-tub washing machine according to claim 1, characterized in that: The middle cross beam is formed with points C1 and C2 connected to the main air inlet duct; fixing holes are formed at points C1 and C2, or slots are formed at points C1 and C2, or one is formed with a fixing hole and the other is formed with a slot.

3. The twin-tub washing machine according to claim 2, characterized in that: The middle cross beam includes a main body and two connecting parts, wherein the two connecting parts are respectively arranged at two ends of the main body and connected to the main body; The main body is formed with an anti-bending structure, which is a convex anti-bending structure and is provided in plurality. The plurality of anti-bending structures are arranged in sequence along the length direction of the middle cross beam; each of the connecting parts is formed with a reinforcing rib, and the reinforcing ribs extend along the width direction of the middle cross beam.

4. The twin-tub washing machine according to claim 3, characterized in that: The anti-bending structure includes a first anti-bending structure and a second anti-bending structure, the first anti-bending structure is L-shaped, and the second anti-bending structure is U-shaped; the C1 point is set on the inner side of the second anti-bending structure, and the C2 point is set on the outer side of the second anti-bending structure.

5. The twin-tub washing machine according to claim 3, characterized in that: The front bracket also includes a left column; each of the connecting parts is bent into shape, one connecting part extends toward the left column and is connected to the left column, and the other connecting part extends toward the right column and is connected to the right column.

6. The twin-tub washing machine according to claim 4, characterized in that: The middle cross beam is formed with an opening; the anti-bending structure further includes a third anti-bending structure, the third anti-bending structure is formed on the side wall of the opening and is arranged away from the second anti-bending structure; The twin-tub washing machine further includes a front panel, the front panel is disposed on the third anti-bending structure and a through hole is formed on the front panel, and the through hole corresponds to the opening.

7. The twin-tub washing machine according to claim 1, characterized in that: The frame is a rectangular parallelepiped structure as a whole. A base is provided at the bottom of the frame, a first side panel is provided at the left side of the frame, a second side panel is provided at the right side of the frame, and a back panel is provided at the rear side of the frame.

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