Drum washing machine with drying function

Abstract

The present invention provides a drum washing machine with a drying function, comprising an outer drum, wherein the inner wall surface of the bottom of the outer drum is a condensing surface, and a drip hole blind pipe is provided on the top of the condensing surface, the drip hole blind pipe has a drip hole facing the condensing surface, and a baffle is provided at the drip hole; the drip hole blind pipe comprises a first drip hole blind pipe and a second drip hole blind pipe, and is connected to a cooling water inlet pipe through a tee pipe; cooling water enters the first drip hole blind pipe and the second drip hole blind pipe respectively through the cooling water inlet pipe, and flows uniformly from the drip holes to the condensing surface to form a wall-adhering flow, and the hot and humid air entering the outer drum during the drying process exchanges heat with the condensing surface, thereby removing the water vapor therein; the present invention adopts a direct contact water-cooled condensation method, which has a simple structure and small space occupation, and avoids the situation where hair debris blocks the condensation channel; the drip holes are distributed in a design, the cooling water flows through a large area, and the effect of removing water vapor in the hot and humid air is good; the cooling water will not be sucked into the heating air duct.

Description

Technical Field

[0001] The present invention belongs to the technical field of laundry equipment, and in particular relates to a drum washing machine with a drying function. Background Art

[0002] In the prior art, when a drum washing machine dries clothes, water vapor in the hot and humid air is removed by heat exchange between the hot and humid air and the condenser. In order to improve the condensation effect, some people have proposed designing a condensation channel on the back of the water tub, but its structure is complex, which increases the longitudinal size of the washing machine. At the same time, the hair brought out by drying will block the condensation channel. Others have proposed designing the condenser on the bottom wall of the water tub, but the cross-sectional area of ​​the water outlet of the required adapter is small, and the processing error is large. Long-term use will affect the water outlet flow rate and may even cause the cooling water to splash or fail to spray onto the bottom wall of the water tub. At the same time, the sealing and fixing structure of the adapter is complex and the reliability is low. Summary of the Invention

[0003] In view of this, the present invention provides a drum washing machine with a drying function to solve the problems of complex condensation structure, easy blockage of condensation channel and poor condensation effect in the prior art.

[0004] The present invention provides a drum washing machine with a drying function, comprising an outer drum, wherein the inner wall surface of the drum bottom of the outer drum serves as a direct contact water-cooling condensation surface;

[0005] A drip hole blind tube is provided at the top of the inner wall surface of the bottom of the outer tube, and the drip hole blind tube is formed with a drip hole. The drip hole faces the inner wall surface of the bottom of the outer tube, so that when the cooling water flows out of the drip hole from the drip hole blind tube, a wall flow is formed on the condensation surface, and flows from top to bottom along the condensation surface to the bottom of the inner wall surface of the bottom of the outer tube.

[0006] Further optionally, a cooling water inlet pipe is provided at the top of the inner wall surface of the bottom of the outer cylinder, and the drip hole blind tube includes a first drip hole blind tube and a second drip hole blind tube connected to the water outlet end of the cooling water inlet pipe, and the first drip hole blind tube and the second drip hole blind tube extend from the water outlet end of the cooling water inlet pipe toward the side wall of the outer cylinder respectively.

[0007] Further optionally, the drum washing machine is provided with a tee pipe, and the cooling water inlet pipe and the first drip hole blind pipe and the second drip hole blind pipe are connected through the tee pipe.

[0008] Further optionally, the first drip hole blind tube and the second drip hole blind tube both extend along the circumference of the outer cylinder and are not lower than the center position of the outer cylinder.

[0009] Further optionally, an air outlet is formed on the side wall of the outer tube at an angle above and close to the bottom of the outer tube, the drip hole blind tube does not form the drip hole at the position corresponding to the air outlet or the drip hole blind tube only extends to the left side of the air outlet, and the length of the first drip hole blind tube and the second drip hole blind tube does not exceed one-quarter of the circular circumference of the connection between the inner wall surface of the bottom of the outer tube and the side wall surface.

[0010] Further optionally, on the water outlet side of the drip hole blind tube close to the blind end, at least part of the drip hole is provided with a baffle, which is inserted into the drip hole blind tube to reduce the flow cross-sectional area of ​​the tube cavity of the drip hole blind tube.

[0011] Further optionally, the blocking piece is horizontally inserted into the drip hole blind tube in a direction perpendicular to the inner wall surface of the bottom of the outer cylinder.

[0012] Further optionally, the blocking pieces are inserted into the drip hole blind tubes at intervals.

[0013] Further optionally, the first drip hole blind tube and the second drip hole blind tube have a flow cross section of the tube cavity gradually decreasing from their respective water inlet ends to the blind ends.

[0014] Further optionally, the drum washing machine is provided with an air inlet and a heating air duct, the air inlet is located at the top of the drum opening of the outer drum, and the two ends of the heating air duct are respectively connected to the air outlet and the air inlet; when the drum washing machine runs a drying program, hot and humid air enters the outer drum, contacts the inner wall surface of the bottom of the outer drum, and the water vapor therein is removed; then enters the heating air duct from the air outlet, is heated by the heating air duct, and then enters the washing drum through the air inlet to dry the clothes, thus forming a drying cycle.

[0015] The present invention provides a drum washing machine with a drying function, comprising an outer drum, wherein the inner wall surface of the drum bottom of the outer drum is a condensation surface, and a drip hole blind tube is provided on the top of the inner wall surface of the drum bottom of the outer drum, and the drip hole blind tube has a drip hole facing the inner wall surface of the drum bottom of the outer drum, and cooling water entering the drip hole blind tube flows evenly to the condensation surface through the drip hole to form a wall-adhering flow; the drip hole blind tube comprises a first drip hole blind tube and a second drip hole blind tube extending along the circumference of the outer drum, and is connected to a cooling water inlet pipe through a tee pipe; near the air outlet of the outer drum, the drip hole blind tube is not provided with a drip hole; on the water outlet side of the drip hole blind tube near the blind end, a baffle is provided at the drip hole; cooling water enters the first drip hole blind tube and the second drip hole blind tube respectively through the cooling water inlet pipe, and is discharged by the drip hole The cooling water flows evenly to the condensing surface, and the hot and humid air entering the outer drum of the drum washing machine during the drying process exchanges heat with the condensing surface, thereby removing the water vapor therein; the present invention adopts a direct contact water-cooled condensation method, which has a simple structure and greatly reduces the space occupied, and solves the problem of hair debris entering the condensation channel and causing blockage; the cooling water flows evenly to the condensing surface from the drip holes, preventing the cooling water from splashing into the washing drum and wetting the clothes, and improving the utilization rate of the cooling water, thereby achieving the effect of energy saving and emission reduction; through the distributed design of multiple drip holes, the flow area of ​​the cooling water on the condensing surface is increased, thereby improving the utilization rate of the condensing surface and the effect of removing water vapor in the hot and humid air; no drip holes are provided at the air outlet to avoid the cooling water from being sucked back into the heating air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] 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.

[0018] Figure 1a and Figure 1b A schematic diagram of the internal structure of a drum washing machine according to an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the external structure of a drum washing machine provided by the present invention;

[0020] In the picture:

[0021] 1-drip hole blind tube; 11-first drip hole blind tube; 12-second drip hole blind tube; 13-drip hole; 14-blocking piece;

[0022] 2-drum washing machine; 21-outer drum; 211-air inlet; 212-air outlet; 213-inner wall of the bottom of the outer drum; 214-side wall of the outer drum; 22-cooling water inlet pipe; 23-tee pipe; 24-heating component; 241-heating air duct; 242-outlet air temperature sensor; 243-fan; 244-heating wire; 245-manual temperature limiter; 246-automatic temperature limiter; 247-inlet air temperature sensor. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The existing methods for removing water vapor from humid and hot air in drum washing machines include designing a condensation channel on the back of the washing drum and designing a condenser on the bottom wall of the washing drum; the first method takes up a large space, and the hair debris generated during the drying process can easily block the condensation channel; the second method is difficult to control the water outlet flow rate, which can easily cause the cooling water to splash or fail to spray onto the inner wall of the washing drum; the present invention creatively proposes a drum washing machine with a drying function, comprising an outer drum, and the inner wall surface of the bottom of the outer drum is used as the condensation surface, and a drip hole blind pipe is provided on the top of the condensation surface, and the drip hole blind pipe has drip holes, and the cooling water entering the drip hole blind pipe flows evenly to the condensation surface through the drip holes to form a wall-adhering flow; when the washing machine is drying, the humid and hot air entering the outer drum contacts the condensation surface, and the water vapor therein is removed; the structure is simple, the space occupied is small, the condensation channel is avoided from being blocked, the cooling water is not easy to splash, the utilization rate is high, and the effect of energy saving and emission reduction is achieved.

[0028] like Figure 1a 、 Figure 1b and Figure 2 As shown, this embodiment provides a drum washing machine with a drying function, including an outer drum 21, the inner wall surface 213 of the bottom of the outer drum serving as a direct-contact water-cooled condensing surface; a drip hole blind tube 1 is provided at the top of the inner wall surface 213 of the bottom of the outer drum, and the drip hole blind tube 1 is formed with a drip hole 13 facing the inner wall surface 213 of the bottom of the outer drum. Cooling water enters the drip hole blind tube 1 and flows from the drip hole 13 to the condensing surface, forming a wall flow on the condensing surface and flowing from top to bottom along the condensing surface to the bottom of the inner wall surface 213 of the bottom of the outer drum; preferably, the drip hole blind tube 1 is arranged close to the condensing surface and extends along the condensing surface; the drip hole blind tube 1 has a simple structure and occupies a small space, and the hair debris generated during the drying process does not directly contact the drip hole blind tube 1, thereby avoiding the situation where the hair debris blocks the condensing channel.

[0029] To evenly distribute the cooling water on the condensing surface and increase its distribution area, ensuring condensation efficiency on the condensing surface, in some preferred embodiments, multiple drip holes 13 are evenly spaced along the extension of drip hole blind tube 1; specifically, one drip hole 13 is spaced every 20 mm. Cooling water flows evenly through drip holes 13 toward the condensing surface, preventing it from splashing into the washing drum and wetting the clothes, which would otherwise reduce the drying efficiency. Cooling water flows toward the condensing surface along the extension of drip hole blind tube 1, covering a large area and improving the utilization of the condensing surface. When drum washing machine 2 is running a drying cycle, the hot and humid air entering outer drum 21 exchanges heat with the condensing surface, removing water vapor from the hot and humid air.

[0030] Furthermore, a cooling water inlet pipe 22 is provided at the top of the inner wall surface 213 of the bottom of the outer tube. In order to increase the coverage of the cooling water on the condensation surface and ensure the condensation effect of the condensation surface, the drip hole blind tube 1 includes a first drip hole blind tube 11 and a second drip hole blind tube 12 connected to the water outlet end of the cooling water inlet pipe 22, and the first drip hole blind tube 11 and the second drip hole blind tube 12 extend from the water outlet end of the cooling water inlet pipe 22 toward the side wall 214 of the outer tube respectively; specifically, the first drip hole blind tube 11 extends toward the left side wall of the outer tube, and the second drip hole blind tube 12 extends toward the right side wall of the outer tube; a mounting port is formed at the top of the side wall 214 of the outer tube near the inner wall surface 213 of the bottom of the outer tube, and the cooling water inlet pipe 22 passes through the mounting port and is fixed on the side wall 214 of the outer tube; one end of the cooling water inlet pipe 22 is connected to an external water pipe.

[0031] The drum washing machine 2 is provided with a tee pipe 23, through which the cooling water inlet pipe 22 is connected to the first drip hole blind tube 11 and the second drip hole blind tube 12; the cooling water flows through the cooling water inlet pipe 22 and the tee pipe 23 to the first drip hole blind tube 11 and the second drip hole blind tube 12, respectively, and then flows to the condensation surface through the drip hole 13;

[0032] Preferably, the first drip hole blind tube 11 and the second drip hole blind tube 12 extend along the circumference of the outer cylinder 21 and are not lower than the center position of the outer cylinder. Specifically, the length of the first drip hole blind tube 11 and the second drip hole blind tube 12 is one-fourth of the circumference of the connection between the inner wall surface 213 of the bottom of the outer cylinder and the side wall 214 of the outer cylinder.

[0033] A water inlet valve is also provided at the cooling water inlet pipe 22, which is electrically connected to the controller of the drum washing machine 2. The controller controls the opening size of the water inlet valve according to the weight of the dried clothes to ensure that the clothes have an efficient condensation effect during the drying process; preferably, the flow rate of the water inlet valve is 0.5L / min.

[0034] An air outlet 212 is formed at an upper portion of the side wall 214 of the outer cylinder, near the bottom of the outer cylinder 21. In order to prevent cooling water from being sucked back into the heating air duct 241 through the air outlet 212, the drip hole 13 is not formed at the position corresponding to the air outlet 212, so that there is no cooling water near the air outlet 212, or the drip hole blind tube 1 on one side of the air outlet 212 only extends to the left side of the air outlet 212. Specifically, the length of the drip hole blind tube 1 on the side of the air outlet 212 does not exceed one-fourth of the circular circumference of the connection between the inner wall surface 213 of the bottom of the outer cylinder and the side wall 214 of the outer cylinder.

[0035] When the cooling water flows along the drip hole blind tube 1, the water pressure gradually increases from the top to the bottom of the drip hole blind tube 1, and then the flow rate of the cooling water when it flows out of the drip hole 13 gradually increases, which easily causes the cooling water at the bottom of the drip hole blind tube 1 to splash; in some embodiments, at the water outlet side of the drip hole blind tube 1 near the blind end, at least part of the drip hole 13 is provided with a baffle 14, and the baffle 14 is inserted into the drip hole blind tube 1 from the side of the drip hole 13 to the tube cavity of the drip hole blind tube 1, so that the drip hole blind tube 1, the flow cross-sectional area of ​​the lumen is reduced; the water pressure on the side of the baffle 14 close to the tee pipe 23 is increased, which plays a role in balancing the water pressure of each drip hole 13, solving the problem that the drip hole 13 at the top of the drip hole blind tube 1 does not flow water while the drip hole 13 at the bottom of the drip hole blind tube 1 has too much water flow; preferably, from the top to the bottom of the drip hole blind tube 1, the length of each baffle 14 extending from the side of the drip hole 13 into the lumen of the drip hole blind tube 1 gradually decreases, so that the water pressure at each drip hole 13 is consistent.

[0036] Furthermore, the baffle 14 forms an obstruction to the cooling water on the side close to the drip hole 13; the baffle 14 forms a flow hole on the side away from the drip hole 13, and the size of the flow hole is related to the extension length of the baffle 14 into the tube cavity of the drip hole blind tube 1; when the cooling water flows near the drip hole 13, part of it flows out of the drip hole 13, and the other part passes through the flow hole and continues to flow along the tube cavity of the drip hole blind tube 1; the cooling water enters the drip hole blind tube 1 through the cooling water inlet pipe 22, and flows from each drip hole 13 to the condensation surface under the action of the baffle 14, and flows along the wall of the condensation surface. During drying, the hot and humid air contacts the condensation surface and exchanges heat, and the water vapor therein condenses into water droplets and is separated from the hot and humid air under the action of gravity, thereby achieving the purpose of dehumidification.

[0037] In some embodiments, at the drip holes 13 , the baffle 14 reduces the cross-sectional area of ​​the lumen of the drip hole blind tube 1 to half of the original cross-sectional area, so that the cooling water flows slowly and at a consistent flow rate at each drip hole 13 .

[0038] Preferably, the blocking piece 14 is inserted into the drip hole blind tube 1 in a direction perpendicular to the inner wall surface 213 of the bottom of the outer tube; specifically, the blocking piece 14 is inserted into the drip hole blind tube 1 at intervals.

[0039] In other embodiments, the baffle 14 may not be provided for the drip hole blind tube 1, thereby simplifying the structure and installation difficulty of the drip hole blind tube 1; however, the water pressure at each drip hole 13 is uneven, the drip hole 13 at the bottom of the drip hole blind tube 1 may spray, while the drip hole 13 at the top of the drip hole blind tube 1 has difficulty in discharging water, resulting in poor condensation effect.

[0040] In addition, the first drip hole blind tube 11 and the second drip hole blind tube 12 have lumens with gradually decreasing flow cross sections from their respective water inlet ends to their blind ends, which can also balance the water pressure of each drip hole 13 .

[0041] To improve cooling water utilization, a cooling circulation system is formed at the bottom of the outer drum 21. This system includes a drip hole blind leg 1. Specifically, a water reservoir is formed at the bottom of the outer drum 21, with a connecting pipe and a pump provided between the water reservoir and the cooling water inlet pipe 22. When cooling water flows along the inner wall surface 213 of the outer drum bottom to the water reservoir, the pump drives the cooling water through the connecting pipe and the cooling water inlet pipe 22, and then re-enters the drip hole blind leg 1. The cooling water then flows through the drip hole 13 back to the inner wall surface 213 of the outer drum bottom, thus achieving cooling water recycling. Furthermore, when the cooling water reaches the bottom of the outer drum 21, it can be discharged through the drain port of the drum washing machine 2.

[0042] In other embodiments, the drum washing machine 2 is further provided with an air inlet 211 and a heating air duct 241. The air inlet 211 is located at the top of the barrel opening of the outer drum 21, and the two ends of the heating air duct 241 are respectively connected to the air outlet 212 and the air inlet 211; when the drum washing machine 2 runs the drying program, hot and humid air enters the outer drum 21 from the washing drum, contacts the inner wall surface 213 of the bottom of the outer drum, completes heat exchange, and the water vapor therein is removed; then, under the action of the fan 243, the air enters the heating air duct 241 from the air outlet 212, is heated by the heating air duct 241, and then enters the washing drum through the air inlet 211, contacts the clothes to be dried and completes heat exchange, forming hot and humid air, thus forming a drying cycle.

[0043] Specifically, a heating assembly 24 is provided on the heating duct 241. The heating assembly 24 includes an outlet temperature sensor 242, a fan 243, a heating wire 244, a manual temperature limiter 245, an automatic temperature limiter 246, and an inlet temperature sensor 247, which are sequentially arranged on the heating duct 241. Driven by the fan 243, air reaches the vicinity of the heating wire 244, where it is heated to high temperature. The air then enters the outer tub 21 and the washing drum through the air inlet 211 of the outer tub 21, exchanges heat with the laundry in the washing drum, and becomes moist hot air. The air then contacts the inner wall 213 of the outer tub bottom, where the water vapor within is removed.

[0044] Furthermore, the outlet temperature sensing package 242 and the inlet temperature sensing package 247 are used to detect the temperatures at the outlet 212 and the inlet 211, respectively. The outlet temperature sensing package 242 and the inlet temperature sensing package 247 are electrically connected to the controller and transmit the detection data to the controller, which can determine the status of the drying process of the drum washing machine 2 based on the detection data. Specifically, when the temperature at the inlet 211 is much higher than the temperature at the outlet 212, the drying process has just begun. When the temperature difference between the inlet 211 and the outlet 212 is less than 10°C and remains so for more than 5 minutes, the drying process is complete.

[0045] The automatic temperature limiter 246 is used to detect the temperature of the air near the heating wire 244 and control the operating frequency of the heating wire 244 so that the air temperature is not too high; the manual temperature limiter 245 is used to detect the temperature of the air near the heating wire 244 when the automatic temperature limiter 246 fails; the automatic temperature limiter 246 and the manual temperature limiter 245 are respectively electrically connected to the controller and transmit the detection data to the controller, and the controller can control the operation of the heating wire 244 according to the detection data; specifically, the automatic temperature limiter 246 sets the protection temperature to T1°C. When the air temperature detected by the automatic temperature limiter 246 reaches T1°C, the controller controls the heating wire 244 to be turned off; when the air temperature detected by the automatic temperature limiter 246 drops below 90°C, the controller controls the heating wire 244 to be turned on; the manual temperature limiter 245 sets the protection temperature to T2°C. When the air temperature detected by the manual temperature limiter 245 reaches T2°C, the controller controls the heating wire 244 to be turned off.

[0046] 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 drum washing machine with a drying function, comprising an outer drum, characterized in that: The inner wall surface of the bottom of the outer cylinder serves as a direct contact water-cooling condensation surface; A drip hole blind tube is provided at the top of the inner wall surface of the bottom of the outer tube, wherein the drip hole blind tube is formed with a drip hole, and the drip hole faces the inner wall surface of the bottom of the outer tube, so that when the cooling water flows out of the drip hole from the drip hole blind tube, a wall flow is formed on the condensation surface, and the cooling water flows from top to bottom along the condensation surface toward the bottom of the inner wall surface of the bottom of the outer tube; On the water outlet side of the drip hole blind tube close to the blind end, at least part of the drip hole is provided with a baffle, which is inserted into the drip hole blind tube to reduce the flow cross-sectional area of ​​the lumen of the drip hole blind tube.

2. The drum washing machine with drying function according to claim 1, characterized in that: A cooling water inlet pipe is provided at the top of the inner wall surface of the bottom of the outer cylinder, and the drip hole blind pipe includes a first drip hole blind pipe and a second drip hole blind pipe connected to the water outlet end of the cooling water inlet pipe, and the first drip hole blind pipe and the second drip hole blind pipe extend from the water outlet end of the cooling water inlet pipe toward the side wall of the outer cylinder respectively.

3. The drum washing machine with drying function according to claim 2, characterized in that: The drum washing machine is provided with a tee pipe, and the cooling water inlet pipe and the first drip hole blind pipe and the second drip hole blind pipe are connected through the tee pipe.

4. The drum washing machine with drying function according to claim 2, characterized in that: The first drip hole blind tube and the second drip hole blind tube both extend along the circumference of the outer cylinder and are not lower than the center position of the outer cylinder.

5. The drum washing machine with drying function according to claim 2, characterized in that: An air outlet is formed on an obliquely upper side wall surface of the outer tube near the bottom of the outer tube, and the drip hole blind tube does not form the drip hole at a position corresponding to the air outlet or the drip hole blind tube only extends to the left side of the air outlet, and the length of the first drip hole blind tube and the second drip hole blind tube does not exceed one-quarter of the circular circumference of the connection between the inner wall surface of the bottom of the outer tube and the side wall surface.

6. The drum washing machine with drying function according to claim 1, characterized in that: The blocking piece is inserted into the drip hole blind tube in a direction perpendicular to the inner wall surface of the cylinder bottom of the outer cylinder.

7. The drum washing machine with drying function according to claim 6, characterized in that: The blocking pieces are inserted into the drip hole blind tubes at intervals.

8. The drum washing machine with drying function according to claim 2, characterized in that: The flow cross sections of the first drip hole blind tube and the second drip hole blind tube gradually decrease from their respective water inlet ends to their blind ends.

9. The drum washing machine with drying function according to claim 1, characterized in that: The drum washing machine is provided with an air inlet and a heating air duct. The air inlet is located at the top of the drum opening of the outer drum, and the two ends of the heating air duct are respectively connected to the air outlet and the air inlet. When the drum washing machine runs a drying program, hot and humid air enters the outer drum, contacts the inner wall surface of the drum bottom of the outer drum, and the water vapor therein is removed. Then, it enters the heating air duct from the air outlet, is heated by the heating air duct, and then enters the washing drum through the air inlet to dry the clothes, thus forming a drying cycle.

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