Heat pump washer-dryer combo

Abstract

A heat pump washer-dryer combo, comprising a housing (1), and a drum module (2) and a heat pump module (3) which are arranged in the housing (1). The heat pump module (3) can supply hot air into the drum module (2) so as to dry clothes. The heat pump module (3) comprises a first drying air duct (33), a fan (32), and a second drying air duct (31) which are connected in sequence; an evaporator (34) is arranged in the second drying air duct (31); a condenser (35) is arranged in the first drying air duct (33); a second air port communicated with the second drying air duct (31) and a first air port communicated with the first drying air duct (33) are formed on the drum module (2). By providing a fresh air inlet on the second drying air duct (31), in the process of executing a drying program, external dry fresh air can be introduced, thereby improving the drying efficiency; in addition, by providing a fresh air inlet between the evaporator (34) and the fan (32), more fresh air can be introduced, and the temperature of the incoming fresh air is not affected by the temperature of the evaporator (34), thereby further improving the drying efficiency.

Description

Heat pump washer-dryer combo Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, specifically providing a heat pump washer-dryer combo. Background Technology

[0002] With social progress and technological development, garment processing devices have become common household appliances. As living standards improve at a fast pace, people are using garment processing devices more frequently and have increasingly higher requirements for them.

[0003] Currently, washer-dryer combos are increasingly used in daily life. Heat pump washer-dryer combos are one type. They primarily use a heat pump module to dry clothes inside the drum module. However, due to the high humidity of the circulating airflow, the drying efficiency of heat pump washer-dryer combos is poor, severely impacting the user experience.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of poor drying efficiency of existing heat pump washer-dryer combos.

[0006] In a first aspect, the present invention provides a heat pump washer-dryer combo, the heat pump washer-dryer combo comprising a housing and a cylinder module and a heat pump module disposed within the housing.

[0007] The heat pump module includes a first drying air duct, a fan, and a second drying air duct connected in sequence. The air inlet and air outlet of the fan are respectively connected to the second drying air duct and the first drying air duct. An evaporator is installed in the second drying air duct, and a condenser is installed in the first drying air duct. The cylinder module is provided with a second air outlet connected to the second drying air duct and a first air outlet connected to the first drying air duct.

[0008] The second drying air duct is provided with a fresh air inlet, which is located between the evaporator and the fan.

[0009] In the preferred embodiment of the above-mentioned heat pump washer-dryer, a fresh air outlet is provided on the first drying air duct, and the fresh air outlet is located downstream of the condenser.

[0010] In the preferred technical solution of the above-mentioned heat pump washer-dryer, the heat pump washer-dryer further includes an exhaust pipe and an electrically controlled valve installed on the exhaust pipe. One end of the exhaust pipe is connected to the fresh air outlet, and the other end of the exhaust pipe is connected to the outside of the housing. The electrically controlled valve is used to control the on / off state of the exhaust pipe.

[0011] In the preferred technical solution of the above-mentioned heat pump washer-dryer, an exhaust vent is provided on the front panel of the housing, and the other end of the exhaust pipe is connected to the exhaust vent.

[0012] In the preferred embodiment of the above-mentioned heat pump washer-dryer combo, the heat pump washer-dryer combo further includes a laundry detergent dispenser and a pressure relief pipe. The first end of the pressure relief pipe is connected to the drum module, and the second end of the pressure relief pipe is connected to the laundry detergent dispenser. A water seal section is provided between the first and second ends of the pressure relief pipe. The height of the water seal section is lower than the first and second ends of the pressure relief pipe to form a water seal within the water seal section; and / or

[0013] The heat pump washer-dryer combo also includes a drain pipe, a drain pump connected to the drain pipe, and a pressure sensor communicatively connected to the drain pump. The water inlet end of the drain pipe is connected to the drum module, and the pressure sensor is used to detect the pressure inside the drum module.

[0014] In the preferred embodiment of the above-mentioned heat pump washer-dryer combo, the heat pump washer-dryer combo further includes a filtration device. A first insertion port is provided on the second drying air duct, and a second insertion port is provided on the housing at a position corresponding to the first insertion port. The filtration device includes a housing and a filter assembly installed in the housing. The filter assembly is movable relative to the housing along the length direction of the housing. The housing is fixedly installed between the housing and the second drying air duct. The two ends of the housing are respectively connected to the first insertion port and the second insertion port. The filter assembly includes a first support, a second support, and a filter screen installed on the second support. The first support and the second support are distributed along the length direction of the housing and are detachably fixedly connected. The first support extends to the second insertion port. The second support and the filter screen pass through the second insertion port and the first insertion port in sequence and extend into the second drying air duct and are located upstream of the evaporator.

[0015] In the preferred embodiment of the above-mentioned heat pump washer-dryer, the filter device further includes a locking pin, which is installed on the first bracket and has a first locking structure. The second bracket has a second locking structure. When the locking pin is in the locked position, the first locking structure and the second locking structure cooperate to lock the second bracket and the first bracket. When the locking pin is in the unlocked position, the first locking structure and the second locking structure separate to separate the second bracket from the first bracket.

[0016] In the preferred embodiment of the above-mentioned heat pump washer-dryer, the second drying duct, the fan, and the first drying duct are all located above the cylinder module.

[0017] In the preferred embodiment of the above-mentioned heat pump washer-dryer, the second drying air duct includes a second guide section, a second air duct, and a second guide pipe connected in sequence. The second guide section, the second air duct, and the second guide pipe are arranged above and behind the cylindrical module. The evaporator is arranged inside the second air duct. The second air outlet is arranged above and behind the cylindrical module. The second guide section is connected to the second air outlet. The second guide pipe is connected to the air inlet of the fan. The fresh air inlet is arranged on the second air duct or the second guide pipe; and / or

[0018] The first drying air duct includes a first guide section, a first air duct, and a first guide pipe connected in sequence. The first guide section, the first air duct, and the first guide pipe are located at the upper left or upper right of the cylindrical module. The condenser is located inside the first air duct. The first air outlet is located at the upper front of the cylindrical module. The first guide section is connected to the first air outlet, and the first guide pipe is connected to the air outlet of the fan.

[0019] In the preferred embodiment of the above-mentioned heat pump washer-dryer combo, the diameter of the second guide pipe gradually narrows from the first end to the second end of the second guide pipe, the first end of the second guide pipe is connected to the second air duct, and the second end of the second guide pipe is connected to the air inlet of the fan; and / or

[0020] The diameter of the first guide pipe gradually widens from the first end to the second end of the first guide pipe. The first end of the first guide pipe is connected to the air outlet of the fan, and the second end of the first guide pipe is connected to the first air duct.

[0021] When the above technical solution is adopted, the present invention introduces external dry fresh air by setting a fresh air inlet on the second drying air duct, which is beneficial to improving drying efficiency during the drying process. In addition, by setting the fresh air inlet between the evaporator and the fan, more fresh air can be introduced, and the temperature of the incoming fresh air will not be affected by the temperature of the evaporator, which is even more beneficial to improving drying efficiency.

[0022] Furthermore, by setting a fresh air outlet on the first drying duct, the present invention allows the fan to be started if the user does not remove the clothes in time after washing, while the compressor remains off. This allows the airflow to circulate within the drum module and the drying duct, preventing the clothes from becoming moldy or smelly. Fresh air continuously enters from the fresh air inlet, and some airflow is discharged from the fresh air outlet to avoid excessive air pressure in the drum module, which could lead to danger. In addition, by placing the fresh air outlet downstream of the condenser, wind resistance can be reduced and assembly can be facilitated.

[0023] Furthermore, by connecting the exhaust pipe to the fresh air outlet, the present invention can directly guide the humid air discharged from the fresh air outlet to the outside of the box, thus avoiding excessive humidity inside the box.

[0024] Furthermore, the present invention connects the cylinder module to the clothing treatment agent dispensing box by setting a pressure relief pipe, so that when the pressure inside the cylinder module is too high, the pressure can be relieved through the pressure relief pipe.

[0025] Furthermore, this invention monitors the pressure inside the cylinder module by setting a pressure sensor. When the pressure inside the cylinder module is too high, the pressure is released by opening a drain pump, which is safer.

[0026] Furthermore, by providing insertion interfaces on the housing and the second drying air duct, the present invention allows the filter assembly to be pulled out from the second drying air duct and the housing when cleaning is required. In addition, by making the first bracket and the second bracket detachably connected, after pulling out the first bracket, the first bracket and the second bracket can be separated, and then the second bracket can be pulled out again, which reduces the required disassembly space, making it easier for users to disassemble and also facilitates the cleaning of the filter screen on the second bracket. Furthermore, by connecting both ends of the outer shell to the first insertion interface and the second insertion interface respectively, the filter assembly can be smoothly inserted into the second drying air duct when installing, resulting in a better user experience.

[0027] Furthermore, by designing the distribution layout of the heat pump modules within the drying equipment, this invention can maximize the use of spare space while ensuring that the overall height remains unchanged, thereby increasing the volume of the evaporator and heat exchanger, which is beneficial to further improving drying efficiency.

[0028] Furthermore, by gradually narrowing the diameter of the second guide tube towards the fan, the present invention can increase the airflow velocity, thereby further improving the drying efficiency.

[0029] Furthermore, by gradually widening the diameter of the first guide tube along the direction closer to the condenser, the present invention enables the airflow to exchange heat more fully with the condenser, thereby increasing the temperature of the airflow and further improving the drying efficiency. Attached Figure Description

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0031] Figure 1 is a schematic diagram of the overall structure of the heat pump washer-dryer combo of the present invention; (top plate of the cabinet omitted).

[0032] Figure 2 is a schematic diagram of the internal structure of the heat pump washer-dryer combo of the present invention; (box body omitted).

[0033] Figure 3 is a schematic diagram of the assembly of the heat pump module and the filter device in the heat pump washer-dryer of the present invention.

[0034] Figure 4 is a schematic diagram of the assembly of the heat pump module and the filter device in the heat pump washer-dryer of the present invention.

[0035] Figure 5 is a schematic diagram of the filter device in the heat pump washer-dryer of the present invention.

[0036] Figure 6 is a schematic diagram of the filter device in the heat pump washer-dryer of the present invention (outer casing omitted).

[0037] Figure 7 is a schematic diagram of the structure of the second bracket and locking pin in the heat pump washer-dryer of the present invention;

[0038] Figure 8 is a schematic diagram of the locking pin of the filter device in the heat pump washer-dryer of the present invention.

[0039] List of reference numerals in the attached diagram:

[0040] 1. Housing; 11. Second insertion interface;

[0041] 2. Cylinder module;

[0042] 3. Heat pump module;

[0043] 31. Second drying air duct; 311. Second air guide section; 312. Second air duct; 313. Second air guide pipe; 3121. First insertion interface; 3122. Fresh air inlet;

[0044] 32. Fan;

[0045] 33. First drying air duct; 331. First air duct; 332. First air guide section; 333. First air guide pipe; 3321. Fresh air outlet; 3331. Air guide component;

[0046] 34. Evaporator; 35. Condenser; 36. Compressor; 37. Sensor;

[0047] 4. Filter device; 41. First bracket; 42. Second bracket; 43. Housing; 44. Locking pin; 441. First locking structure; 421. First filter screen frame; 422. Second filter screen frame; 4211. Second locking structure. Detailed Implementation

[0048] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0049] It should be noted that in the description of this invention, terms such as "inner," "upper," "lower," "front," "rear," "longitudinal," "lateral," "top," and "bottom," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant devices or elements must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Referring to Figures 1 to 8, a specific preferred embodiment of the present invention will be described.

[0052] As shown in Figures 1 and 2, the heat pump washer-dryer combo of the present invention includes a housing 1 and a drum module 2 (also referred to as an outer drum) and a heat pump module 3 disposed inside the housing 1. The heat pump module 3 can supply hot air into the drum module 2 to dry the clothes.

[0053] As shown in Figures 2 to 4, the heat pump module 3 of the present invention includes a first drying air duct 33, a fan 32 and a second drying air duct 31 connected in sequence. An evaporator 34 is provided in the second drying air duct 31 and a condenser 35 is provided in the first drying air duct 33. The cylinder module 2 is provided with a second air outlet (not shown in the figure) communicating with the second drying air duct 31 and a first air outlet (not shown in the figure) communicating with the first drying air duct 33.

[0054] In this embodiment, the hot and humid air inside the cylindrical module 2 is circulated by the fan 32 and enters the cylindrical module 2 sequentially through the second air outlet, the second drying air duct 31, the first drying air duct 33, and the first air outlet. Under the action of the evaporator 34, the moisture in the hot and humid air is condensed and separated from the airflow. Under the action of the condenser 35, the temperature of the air is raised to supply hot air into the cylindrical module 2, thereby drying the clothes inside the cylindrical module 2 and drying the clothes.

[0055] Preferably, as shown in Figures 1 and 2, the second drying air duct 31, the fan 32, and the first drying air duct 33 are all arranged above the cylindrical module 2.

[0056] Further, as shown in Figures 2 to 4, the second drying air duct 31 includes a connected second guide section 311 and a second air duct 312. The second guide section 311 and the second air duct 312 are located at the rear upper part of the cylindrical module 2, that is, near the rear end of the cylindrical module 2. The evaporator 34 is located inside the second air duct 312, and the second air outlet is located at the rear upper part of the cylindrical module 2, that is, the second air outlet is also located near the rear end of the cylindrical module 2, so as to facilitate communication between the second guide section 311 and the second air outlet. The second air duct 312 extends horizontally, and the extension direction of the second air duct 312 is perpendicular to the axial direction of the cylindrical module 2.

[0057] The second air guide 311 and the second air duct 312 are preferably configured to be detachably fixedly connected.

[0058] Further, as shown in Figures 2 to 4, the first drying air duct 33 includes a first air duct 331 and a first guide section 332 that are connected. The first guide section 332 and the first air duct 331 are located at the upper left or upper right of the cylindrical module 2. The condenser 35 is located inside the first air duct 331. The first air outlet is located at the upper front of the cylindrical module 2, that is, the first air outlet is located near the front end of the cylindrical module 2. The first guide section 332 is connected to the first air outlet. The first air duct 331 also extends horizontally, and the extension direction of the first air duct 331 is parallel to the axial direction of the cylindrical module 2. That is, the extension direction of the first air duct 331 is perpendicular to the extension direction of the second air duct 312. The two heat exchange air ducts are arranged in an approximately L-shape.

[0059] The first air duct 331 and the first air guide 332 are preferably configured to be detachably fixedly connected.

[0060] This embodiment addresses the structural characteristics of the space above the inner drum module 2 of the housing 1. Specifically, taking a drum-type heat pump washer-dryer combo as an example, a laundry detergent dispenser is typically installed in the upper left front space. Correspondingly, there is some unused space in the upper rear and upper right. Therefore, based on the characteristics of the internal space of the housing 1, this embodiment of the heat pump washer-dryer combo places the second drying duct 31 in the upper rear space, the first drying duct 33 in the upper right space, and the fan 32 between the second drying duct 31 and the first drying duct 33, located at the corner in the upper right. From the overall layout, the second drying duct 31, the fan 32, and the first drying duct 33 are vertically distributed, maximizing the use of available space while ensuring that the overall height of the heat pump washer-dryer combo remains unchanged.

[0061] It should be noted that the front end of the cylindrical module 2 has a clothing loading and unloading port. Those skilled in the art can regard this clothing loading and unloading port as the first air vent, even if the first guide part 332 is connected to the clothing loading and unloading port. Alternatively, as shown in Figure 2, a separate air vent can be opened above the front of the cylindrical module 2 as the first air vent. Such adjustments and changes to the specific setting of the first air vent do not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention.

[0062] Furthermore, in order to maximize heat exchange efficiency and ensure drying effect within a limited space, it is necessary to enlarge the heat exchange bodies of the evaporator 34 and condenser 35 as much as possible. Therefore, the second air duct 312 and the first air duct 331 have external contours adapted to their respective spaces, so that the heat exchange bodies of the evaporator 34 housed in the second air duct 312 and the heat exchange bodies of the condenser 35 housed in the first air duct 331 can be enlarged as much as possible.

[0063] Specifically, as shown in Figures 2 and 3, the second air duct 312 is located at the upper rear of the cylindrical module 2, roughly in the middle of the cylindrical module 2. Since the cylindrical module 2 has a cylindrical structure, the middle position of the cylindrical structure is roughly planar. Therefore, the second air duct 312 has a roughly rectangular structure, that is, the second air duct 312 is roughly flat and the cross-section is approximately rectangular. Correspondingly, the heat exchange body of the evaporator 34 inside it is arranged in a regular rectangular pattern. The first air duct 331 is located at the upper right of the cylindrical module 2. In order to adapt to the cylindrical structure of the cylindrical module 2 and make full use of this part of the space, the first air duct 331 is set as a non-rectangular structure. That is, in this part of the space, the first air duct 331 is set as a "7" shaped structure, that is, a structure that is wider at the top and narrower at the bottom. The surface of the first air duct 331 near the cylindrical module 2 is set as a concave arc surface. This concave arc surface shares the same central axis as the cylindrical module 2. Correspondingly, the heat exchange body of the condenser 35 inside it is also arranged in a "7" shaped structure.

[0064] It should be noted that the shapes of the second air duct 312 and the first air duct 331 described above, as well as the arrangement of the heat exchange bodies corresponding to the evaporator 34 and condenser 35 respectively arranged inside them, are merely exemplary. Those skilled in the art can also arrange other shapes according to actual conditions, as long as the space between the box 1 and the cylindrical module 2 can be fully utilized, so that the bottom contours of the second air duct 312 and the first air duct 331 match the contours of the cylindrical wall of the cylindrical module 2, and the heat exchange bodies inside the heat exchange air ducts can maximize the heat exchange efficiency. The present invention does not impose any limitations on this.

[0065] Furthermore, the fan 32 is positioned at the upper right corner. To fully utilize this space, the fan 32 is vertically oriented. The central axis of the fan 32's air inlet (i.e., the axis of the fan 32's impeller) extends horizontally along the transverse direction of the housing 1, perpendicular to the axis of the cylindrical module 2. The central axis of the fan 32's air outlet (perpendicular to the axis of the fan 32's impeller) extends horizontally along the longitudinal direction of the housing 1, parallel to the axis of the cylindrical module 2. In other words, the extension of the central axis of the fan 32's air inlet... The direction is the same as the extension direction of the second air duct 312. The extension direction of the central axis of the air outlet of the fan 32 is the same as the extension direction of the first air duct 331. The second drying air duct 31 is connected to the air inlet of the fan 32, and the first drying air duct 33 is connected to the air outlet of the fan 32. This makes the second drying air duct 31 and the first drying air duct 33 perpendicularly distributed with the fan 32 as the center. This can maximize the use of the empty space between the box 1 and the cylinder module 2, so as to further ensure that the overall height of the heat pump washer-dryer remains unchanged.

[0066] Furthermore, the second guide section 311 and the first guide section 332 are designed to fully utilize the space between the housing 1 and the cylindrical module 2. Specifically, as shown in Figures 1 and 2, both the second guide section 311 and the first guide section 332 are configured with a bent structure, and the surface near the cylindrical module 2 is a concave arc surface that adapts to the surface of the cylindrical module 2's wall. Preferably, both the second guide section 311 and the first guide section 332 are made of flexible materials, such as rubber tubing.

[0067] Furthermore, the second air guide 311, the second air duct 312, the fan 32, the first air duct 331, and the first air guide 332 are all spaced apart from the cylinder wall of the cylinder module 2 to ensure a safe distance from the cylinder module 2, thereby ensuring their normal operation.

[0068] Preferably, as shown in Figures 2 to 4, the second drying air duct 31 of the present invention further includes a second guide pipe 313. The first end of the second guide pipe 313 is connected to the second air duct 312, and the second end of the second guide pipe 313 is connected to the air inlet of the fan 32. The diameter of the second guide pipe 313 gradually narrows from the first end to the second end, so that air can be gathered to the air inlet of the fan 32.

[0069] The extension direction of the second guide pipe 313 is consistent with the extension direction of the second air duct 312. It should be noted that the second guide pipe 313 and the second air duct 312 can be fixedly connected, or they can be installed as a single unit.

[0070] Preferably, as shown in Figures 2 to 4, the first drying air duct 33 of the present invention further includes a first guide pipe 333. The first end of the first guide pipe 333 is connected to the air outlet of the fan 32, and the second end of the first guide pipe 333 is connected to the first air duct 331. The diameter of the first guide pipe 333 gradually widens from the first end to the second end, so that the air flowing out of the air outlet of the fan 32 can diffuse into the first air duct 331.

[0071] The first guide pipe 333 extends in the same direction as the first air duct 331. It should be noted that the first guide pipe 333 and the first air duct 331 can be fixedly connected, or they can be installed as a single unit.

[0072] Furthermore, as shown in Figure 4, a guide element 3331 is provided inside the first guide pipe 333 to guide the air, so that the air flowing out of the air outlet of the fan 32 can be evenly diffused into the first air duct 331, thereby allowing the air to flow evenly through the condenser 35, avoiding the air from accumulating in a certain area of ​​the condenser 35, achieving uniform heat exchange and ensuring heat exchange efficiency.

[0073] Preferably, as shown in FIG4, the flow guide 3331 is configured as a plate-like structure.

[0074] Among them, the air guide 3331 extends from the air inlet end of the first air guide pipe 333 to the air-facing end face of the condenser 35.

[0075] It should be noted that each flow guide 3331 can be a curved plate-like structure or a straight plate-like structure.

[0076] Preferably, as shown in Figure 4, a plurality of flow guides 3331 are provided inside the first flow guide pipe 333. The plurality of flow guides 3331 are distributed at intervals along the flow direction perpendicular to the airflow. The plurality of flow guides 3331 divide the interior of the first flow guide pipe 333 into a plurality of flow guide channels. The airflow flowing out of the air outlet of the fan 32 can flow through the heat exchange body of the condenser 35 through each flow guide channel to achieve uniform heat exchange.

[0077] For example, as shown in FIG4, there are two flow guides 3331, which divide the interior of the first flow guide tube 333 into three flow channels.

[0078] Preferably, as shown in FIG2, the heat pump module 3 of the present invention further includes a compressor 36, which is disposed below the cylinder module 2.

[0079] For example, the compressor 36 is vertically arranged at the lower left of the cylinder module 2. Of course, the compressor 36 can also be horizontally arranged, as long as it can be adapted to be installed in the lower space between the cylinder module 2 and the housing 1. The compressor 36, evaporator 34 and condenser 35 are interconnected to form a refrigerant circulation loop. The refrigerant exchanges heat with the humid and hot air flowing through the evaporator 34, which can cause the moisture in the humid and hot air to condense and separate from the airflow. The refrigerant exchanges heat with the air flowing through the condenser 35, which can raise the temperature of the air, thereby supplying hot air into the cylinder module 2.

[0080] The above-described embodiments and various extended embodiments, through the design of the distribution layout of the heat pump module 3 within the heat pump washer-dryer combo, can maximize the use of spare space while maintaining the overall height of the machine, and simultaneously improve heat exchange efficiency within the limited space to ensure drying effect. Furthermore, the components in the heat pump module 3 are detachably fixedly connected, especially the evaporator 34 and condenser 35, which adopt a separate design. Compared with the modular setup of existing heat pump modules 3, this facilitates individual replacement and saves costs.

[0081] Preferably, as shown in FIG4, the second drying air duct 31 of the present invention is provided with a fresh air inlet 3122, which is located between the evaporator 34 and the fan 32.

[0082] By setting a fresh air inlet 3122 on the second drying air duct 31, fresh air from the outside can be introduced during the drying process, which helps to improve drying efficiency. In addition, by setting the fresh air inlet 3122 between the evaporator 34 and the fan 32, more fresh air can be introduced, and the temperature of the incoming fresh air will not be affected by the temperature of the evaporator 34, which is even more conducive to improving drying efficiency.

[0083] For example, as shown in Figure 4, the fresh air inlet 3122 is disposed on the second guide pipe 313. Of course, those skilled in the art can also dispose of the fresh air inlet 3122 on the second air duct 312.

[0084] Preferably, as shown in Figure 4, the first drying air duct 33 is provided with a fresh air outlet 3321, which is located downstream of the condenser 35.

[0085] After the clothes are washed, if the user does not take them out in time, the fan 32 can be turned on while the compressor 36 is not turned on, so that the airflow circulates in the cylinder module 2 and the drying air duct. Fresh air continuously enters from the fresh air inlet 3122, and some airflow will be discharged from the fresh air outlet 3321 to avoid the danger of excessive air pressure in the cylinder module 2. In addition, by setting the fresh air outlet 3321 downstream of the condenser 35, wind resistance can be reduced and assembly can be facilitated.

[0086] Preferably, the heat pump washer-dryer of the present invention further includes an exhaust pipe (not shown in the figure) and an electrically controlled valve installed on the exhaust pipe. One end of the exhaust pipe is connected to the fresh air outlet 3321, and the other end of the exhaust pipe is connected to the outside of the housing 1. The electrically controlled valve is used to control the on / off state of the exhaust pipe.

[0087] By connecting the exhaust duct to the fresh air outlet 3321, the humid air discharged from the fresh air outlet 3321 can be directly guided to the outside of the housing 1, avoiding excessive humidity inside the housing 1. In addition, when exhaust is not required through the fresh air outlet 3321, the electric control valve is in the closed state.

[0088] Preferably, the front panel of the housing 1 is provided with an exhaust vent (not shown in the figure), and the other end of the exhaust pipe is connected to the exhaust vent.

[0089] By setting an exhaust vent on the front panel of the housing 1, and connecting the exhaust vent to the fresh air outlet 3321 through an exhaust pipe, the air discharged from the fresh air outlet 3321 is discharged from the front side of the housing 1, which is conducive to rapid diffusion.

[0090] Preferably, the heat pump washer-dryer combo of the present invention further includes a laundry detergent dispensing box and a pressure relief pipe (not shown in the figure). The first end of the pressure relief pipe is connected to the cylinder module 2, and the second end of the pressure relief pipe is connected to the laundry detergent dispensing box. A water seal section is provided between the first end and the second end of the pressure relief pipe. The height of the water seal section is lower than the first end and the second end of the pressure relief pipe to form a water seal within the water seal section.

[0091] The garment treatment agent dispensing box is used to dispense garment treatment agents (such as detergent, fabric softener, etc.). During the drying process, due to the entry of fresh air, the pressure inside the drum module 2 gradually increases. Under the action of this pressure, the water in the water seal pipe section gradually moves towards the second end of the pressure relief pipe until the water is discharged from the pressure relief pipe. The airflow inside the drum module 2 enters the garment treatment agent dispensing box along the pressure relief pipe and is discharged to the outside of the box 1 through the garment treatment agent dispensing box, thus achieving pressure relief.

[0092] Preferably, the heat pump washer-dryer combo of the present invention further includes a drain pipe and a drain pump connected to the drain pipe. The drain pipe is connected to the drum module 2. The heat pump washer-dryer combo also includes a pressure sensor, which is used to detect the pressure inside the drum module 2. The pressure sensor is communicatively connected to the drain pump.

[0093] During the drying process, the pressure inside the cylinder module 2 is detected by a pressure sensor. When the pressure inside the cylinder module 2 exceeds the set upper limit, the drain pump is started to release the pressure.

[0094] It should be noted that the pressure sensor can be connected to the controller of the heat pump washer-dryer combo. The data detected by the pressure sensor is transmitted to the controller, which performs calculations and analysis. When the pressure inside the drum module 2 exceeds the set upper limit, the controller controls the drain pump to start and release the pressure.

[0095] Preferably, as shown in Figures 1 to 6, the heat pump washer-dryer of the present invention further includes a filter device 4. A first insertion port 3121 is provided on the second drying air duct 31. A second insertion port 11 is provided at a position corresponding to the first insertion port 3121 on the housing 1. The filter device 4 includes a housing 43 and a filter assembly installed in the housing 43. The filter assembly is movable relative to the housing 43 along the length direction of the housing 43. The housing 43 is fixedly installed between the housing 1 and the second drying air duct 31. The two ends of the housing 43 are respectively connected to the first insertion port 3121 and the second insertion port 11. The filter assembly includes a first support 41, a second support 42 and a filter screen (not shown in the figure) installed on the second support 42. The first support 41 and the second support 42 are distributed along the length direction of the housing 43 and are detachably connected. The first support 41 extends to the second insertion port 11. The second support 42 and the filter screen pass through the second insertion port 11 and the first insertion port 3121 in sequence and extend into the second drying air duct 31 and are located upstream of the evaporator 34.

[0096] The filter device 4 is used to filter the airflow in the second drying air duct 31, trapping impurities such as lint carried by the airflow. By providing insertion interfaces on the housing 1 and the second drying air duct 31, the filter assembly can be pulled out from the second drying air duct 31 and the housing 1 when cleaning is required. In addition, by making the first bracket 41 and the second bracket 42 detachably connected, after pulling out the first bracket 41, the first bracket 41 and the second bracket 42 can be separated, and then the second bracket 42 can be pulled out, which can reduce the required disassembly space, making it easier for users to disassemble and also making it easier to clean the filter screen on the second bracket 42. Furthermore, by connecting the two ends of the outer shell 43 to the first insertion interface 3121 and the second insertion interface 11 respectively, the filter assembly can be smoothly inserted into the second drying air duct 31 when installing, resulting in a better user experience.

[0097] For example, as shown in Figures 1 to 3, the first insertion interface 3121 is disposed on the side wall of the second air duct 312 facing the front panel of the housing 1, and the second insertion interface 11 is disposed on the front panel of the housing 1. The extension direction of the filter device 4 is parallel to the axis of the cylinder module 2. In this way, the user can pull out the filter assembly from the front of the washer-dryer combo, which is more convenient.

[0098] Preferably, as shown in Figures 6 to 8, the filter device 4 of the present invention further includes a locking pin 44, which is mounted on the first bracket 41. The locking pin 44 is provided with a first locking structure 441, and the second bracket 42 is provided with a second locking structure 4211. When the locking pin 44 is in the locked position, the first locking structure 441 and the second locking structure 4211 cooperate to lock the second bracket 42 and the first bracket 41. When the locking pin 44 is in the unlocked position, the first locking structure 441 and the second locking structure 4211 separate, so that the second bracket 42 and the first bracket 41 can be disassembled and separated.

[0099] For example, the first bracket 41 is provided with a vertically extending receiving groove (not shown in the figure), the top of the receiving groove is open, the locking pin 44 is installed in the receiving groove and can move up and down in the vertical direction to switch between the locked position and the unlocked position. The first locking structure 441 includes two locking hooks, which are distributed at intervals in the vertical direction. The second locking structure 4211 includes two locking holes provided at the ends of the second bracket 42. A return spring (not shown in the figure) is installed between the bottom of the locking pin 44 and the receiving groove. Under the action of the return spring, the two locking hooks are respectively inserted into the corresponding locking holes to lock the first bracket 41 and the second bracket 42. When it is necessary to disassemble the two brackets, press the locking pin 44 down to separate the locking hooks from the locking holes, and the first bracket 41 and the second bracket 42 can be disassembled.

[0100] It should be noted that the first locking structure 441 and the second locking structure 4211 are not limited to the structure of the lock hook and the lock hole described above. For example, they can also be set as two opposing lock hooks, etc. Such adjustments and changes to the specific structural forms of the first locking structure 441 and the second locking structure 4211 do not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention.

[0101] Preferably, as shown in Figures 5 to 7, the second support 42 includes a first filter frame 421 and a second filter frame 422. The first end of the first filter frame 421 is pivotally connected to the first end of the second filter frame 422. The filter includes a first filter mounted on the first filter frame 421 and a second filter mounted on the second filter frame 422. The aperture of the filter holes of the first filter is larger than the aperture of the filter holes of the second filter. The first filter is located upstream of the second filter.

[0102] The first filter frame 421 and the second filter frame 422 are arranged side by side along the direction of airflow. The first filter frame 421 is located upstream of the second filter frame 422. The first filter and the second filter are arranged sequentially along the direction of airflow. The airflow first flows through the first filter for coarse filtration and then flows through the second filter for fine filtration, resulting in better filtration. In addition, by pivotally connecting the first filter frame 421 and the second filter frame 422, it is convenient to clean the first filter and the second filter.

[0103] For example, as shown in Figures 6 and 7, the second locking structure 4211 is disposed at the second end of the first filter frame 421. The end face of the first bracket 41 near the second bracket 42 has a socket (not shown in the figure). The second end of the first filter frame 421 extends into the first bracket 41 through the socket. The second end of the second filter frame 422 does not pass through the socket. The second end of the second filter frame 422 is located outside the first bracket 41, that is, the length of the second filter frame 422 is less than the length of the first filter frame 421.

[0104] Preferably, as shown in FIG4, the heat pump module 3 of the present invention further includes a sensor 37 installed in the second drying air duct 31, and the sensor 37 is located between the filter device 4 and the evaporator 34.

[0105] The sensor 37 is used to detect humidity and / or temperature. That is, the sensor 37 can be a humidity sensor to detect the humidity of the airflow in the second drying duct 31, or it can be a temperature sensor to detect the temperature of the airflow in the second drying duct 31, or it can be a temperature and humidity sensor to simultaneously detect the humidity and temperature of the airflow in the second drying duct 31.

[0106] For example, sensor 37 is mounted on the second air duct 312, downstream of the second bracket 42 of the filter device 4 and upstream of the evaporator 34.

[0107] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0108] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A heat pump washer-dryer, characterized in that, The heat pump washing and drying integrated machine comprises a box body, a drum module and a heat pump module arranged in the box body, The heat pump module comprises a first drying air duct, a fan and a second drying air duct connected in sequence, the air inlet and the air outlet of the fan are communicated with the second drying air duct and the first drying air duct respectively, the first drying air duct is provided with a condenser, the second drying air duct is provided with an evaporator, the drum module is provided with a first air port communicated with the first drying air duct and a second air port communicated with the second drying air duct. The second drying air duct is provided with a fresh air inlet, and the fresh air inlet is located between the evaporator and the fan. The first drying air duct is provided with a fresh air outlet, and the fresh air outlet is located downstream of the condenser.

2. The heat pump washer-dryer according to claim 1, characterized in that, The heat pump washing and drying integrated machine further comprises an exhaust pipe and an electric control valve installed on the exhaust pipe, one end of the exhaust pipe is communicated with the fresh air outlet, the other end of the exhaust pipe is communicated with the outside of the box body, and the electric control valve is used for controlling the on-off state of the exhaust pipe.

3. The heat pump washing and drying integrated machine according to claim 2, characterized in that, The other end of the exhaust pipe is communicated with the exhaust port.

4. The heat pump washing and drying integrated machine according to claim 1, characterized in that, The heat pump washing and drying integrated machine further comprises a laundry treatment agent feeding box and a pressure relief pipe, the first end of the pressure relief pipe is communicated with the drum module, the second end of the pressure relief pipe is communicated with the laundry treatment agent feeding box, the water seal pipe section between the first end and the second end of the pressure relief pipe has a height lower than the first end and the second end of the pressure relief pipe so as to form a water seal in the water seal pipe section; and / or The heat pump washing and drying integrated machine further comprises a drain pipe, a drain pump communicated with the drain pipe and a pressure sensor in communication connection with the drain pump, the water inlet end of the drain pipe is communicated with the drum module, and the pressure sensor is used for detecting the pressure in the drum module.

5. The heat pump washing and drying integrated machine according to claim 1, characterized in that, The heat pump washing and drying integrated machine further comprises a filtering device, the second drying air duct is provided with a first plug-in port, the box body is provided with a second plug-in port at a position corresponding to the first plug-in port, the filtering device comprises a shell and a filtering assembly installed in the shell, the filtering assembly can move relative to the shell along the length direction of the shell, the shell is fixedly installed between the box body and the second drying air duct, the two ends of the shell are communicated with the first plug-in port and the second plug-in port respectively, the filtering assembly comprises a first support, a second support and a filter screen installed on the second support, the first support and the second support are distributed along the length direction of the shell and are detachably fixedly connected, the first support extends to the second plug-in port, and the second support and the filter screen extend into the second drying air duct in sequence and are located upstream of the evaporator by passing through the second plug-in port and the first plug-in port.

6. The heat pump washing and drying integrated machine according to claim 5, characterized in that, The filter device further comprises a locking pin mounted on the first support, the locking pin being provided with a first locking structure, the second support being provided with a second locking structure, the first locking structure cooperating with the second locking structure to lock the second support with the first support when the locking pin is in a locking position, and the first locking structure being separated from the second locking structure to separate the second support from the first support when the locking pin is in an unlocking position.

7. The heat pump washing and drying integrated machine according to any one of claims 1 to 6, characterized in that, The second drying air duct, the fan and the first drying air duct are all located above the drum module.

8. The heat pump washing and drying integrated machine according to claim 7, characterized in that, The first drying air duct comprises a first flow guide portion, a first air duct and a first flow guide pipe which are sequentially communicated, the first flow guide portion, the first air duct and the first flow guide pipe being arranged at the upper left or upper right of the drum module, the condenser being arranged in the first air duct, the first air outlet being arranged at the upper front of the drum module, the first flow guide portion being communicated with the first air outlet, and the first flow guide pipe being communicated with the air outlet of the fan; and / or The second drying air duct comprises a second flow guide portion, a second air duct and a second flow guide pipe which are sequentially communicated, the second flow guide portion, the second air duct and the second flow guide pipe being arranged at the upper rear of the drum module, the evaporator being arranged in the second air duct, the second air outlet being arranged at the upper rear of the drum module, the second flow guide portion being communicated with the second air outlet, the second flow guide pipe being communicated with the air inlet of the fan, and the fresh air inlet being arranged on the second air duct or the second flow guide pipe.

9. The heat pump washing and drying integrated machine according to claim 8, characterized in that, The caliber of the first flow guide pipe gradually widens from the first end of the first flow guide pipe to the second end of the first flow guide pipe, the first end of the first flow guide pipe being the end communicated with the air outlet of the fan, and the second end of the first flow guide pipe being the end communicated with the first air duct; and / or The caliber of the second flow guide pipe gradually narrows from the first end of the second flow guide pipe to the second end of the second flow guide pipe, the first end of the second flow guide pipe being the end communicated with the second air duct, and the second end of the second flow guide pipe being the end communicated with the air inlet of the fan. The caliber of the second flow guide pipe gradually narrows from the first end of the second flow guide pipe to the second end of the second flow guide pipe, the first end of the second flow guide pipe being the end communicated with the second air duct, and the second end of the second flow guide pipe being the end communicated with the air inlet of the fan.

Images