Clothes drying device and washing and drying all-in-one machine

Abstract

The utility model discloses a clothes drying device and a washing and drying all-in-one machine. The clothes drying device comprises a shell, a roller and a heat pump system. The shell is provided with an air duct. The drying cavity is communicated with the air duct to form a circulating air path; the heat pump system comprises a compressor, a condenser, an evaporator and an airflow driving part, wherein the condenser, the evaporator and the airflow driving part are arranged in the air duct. The airflow driving part is used for driving airflow to circularly flow in the circulating air path. The volume of the condenser is not larger than that of the evaporator, and a refrigerant discharged by the compressor firstly flows through the condenser and then flows through the evaporator to form a refrigerant circulation loop.

Description

TECHNICAL FIELD

[0001] The utility model relates to clothes drying technical field, especially related to a clothes drying device and washing and drying integrated machine. BACKGROUND

[0002] In the related art, the clothes drying device is used for drying clothes, bed sheets, curtains and other objects. The existing clothes drying device has a long drying time, which affects user experience. In the traditional scheme, the drying efficiency is improved by increasing the pipeline of the evaporator or the condenser, but this increases the size of the heat pump and further increases the flow resistance. In the washing and drying integrated device, there are both washing structure and drying structure, and the space is limited. The heat pump system needs to improve the drying efficiency in the limited space. SUMMARY

[0003] The main purpose of the utility model is to provide a clothes drying device and washing and drying integrated machine, which aims to shorten the drying time of the existing clothes drying device.

[0004] To achieve the above-mentioned purpose, the clothes drying device provided by the utility model comprises:

[0005] A shell has an air duct.

[0006] A drum has a drying cavity, and the drying cavity is in communication with the air duct to form a circulating air path.

[0007] A heat pump system comprises a compressor, a condenser, an evaporator and an airflow driving member arranged in the air duct. The airflow driving member is used to drive the airflow to circulate in the circulating air path.

[0008] The volume of the condenser is not greater than the volume of the evaporator. The refrigerant discharged by the compressor first flows through the condenser and then flows through the evaporator to form a refrigerant circulation loop.

[0009] In an embodiment, the volume of the condenser is V1, the volume of the evaporator is V2, and the ratio of V1 to V2 is not less than 0.8 and not greater than 1.0.

[0010] In an embodiment, in the direction from the windward surface to the leeward surface of the condenser, the width of the condenser is W1; in the direction from the windward surface to the leeward surface of the evaporator, the width of the evaporator is W2; the ratio of W1 to W2 is not less than 0.8 and not greater than 1.0.

[0011] In an embodiment, the evaporator and the condenser are arranged side by side in a first direction, along the first direction, a width between a windward surface of the evaporator and a leeward surface of the condenser is W3; along a second direction, a width of the housing is W4, the first direction intersects the second direction; a ratio of the W3 to the W4 is not less than 0.1 and not greater than 0.25.

[0012] In an embodiment, the evaporator and the condenser are arranged in sequence along a first direction, the condenser comprises a plurality of condensing straight tubes and a plurality of condensing bends connecting adjacent two of the condensing straight tubes, the evaporator comprises a plurality of evaporating straight tubes and a plurality of evaporating bends connecting adjacent two of the evaporating straight tubes, the plurality of condensing straight tubes and the plurality of evaporating straight tubes are arranged in a third direction, the plurality of condensing straight tubes and the plurality of evaporating straight tubes are arranged in a plurality of rows along the first direction, the first direction is perpendicular to the third direction; a number of rows of the condensing straight tubes in the condenser is less than or equal to a number of rows of the evaporating straight tubes in the evaporator.

[0013] In an embodiment, along the first direction, a number of rows of the condensing straight tubes in the condenser is the same as a number of rows of the evaporating straight tubes in the evaporator; the plurality of condensing straight tubes and the plurality of evaporating straight tubes are arranged in a plurality of columns along a vertical direction, a number of the condensing straight tubes in each column is greater than a number of the evaporating straight tubes in each column.

[0014] In an embodiment, an inner diameter of the evaporating straight tube is greater than an inner diameter of the condensing straight tube.

[0015] In an embodiment, an operation stage of the clothes drying device comprises a temperature rising stage and a temperature maintaining stage, the compressor comprises a variable frequency compressor;

[0016] In the temperature rising stage, the variable frequency compressor first increases frequency and then decreases frequency to a preset high frequency to enter the temperature maintaining stage;

[0017] In the temperature maintaining stage, the variable frequency compressor operates at the preset high frequency, a frequency of the preset high frequency is not less than 70 Hz.

[0018] In an embodiment, the variable frequency compressor has an exhaust port, the exhaust port is communicated with the refrigerant circulation loop, in the temperature maintaining stage, a temperature of refrigerant exhausted from the exhaust port is not higher than 110 degrees Celsius.

[0019] In an embodiment, the condenser has a condensing flow path, the evaporator has an evaporating flow path, the refrigerant exhausted from the compressor first flows through the condensing flow path and then flows through the evaporating flow path to constitute the refrigerant circulation loop.

[0020] In one embodiment, the condenser has a condensing flow path, the evaporator has at least two independent evaporating flow paths, the number of evaporating flow paths of the evaporator is greater than the number of condensing flow paths of the condenser, at least two of the evaporating flow paths are in communication with the condenser, and the refrigerant discharged by the compressor flows through the condensing flow path and then flows through at least two of the evaporating flow paths to form the refrigerant circulation loop.

[0021] In one embodiment, one end of the evaporating flow path is a refrigerant inlet, the other end of the evaporating flow path is a refrigerant outlet, and the refrigerant inlets of at least two of the evaporating flow paths are arranged on the same side of the evaporator and are adjacent to each other.

[0022] In one embodiment, the refrigerant outlets of at least two of the evaporating flow paths are arranged on the same side of the evaporator and are adjacent to each other.

[0023] In one embodiment, the evaporator further comprises a distribution joint having at least three distribution flow channels in communication with each other, and the refrigerant inlets of at least two of the evaporating flow paths are in communication with the refrigerant circulation loop through one of the distribution joints.

[0024] In one embodiment, the refrigerant outlets of at least two of the evaporating flow paths are in communication with the refrigerant circulation loop through one of the distribution joints.

[0025] In one embodiment, the evaporator and the condenser are arranged in sequence along a first direction, the evaporator includes at least a first refrigerant pipeline and a second refrigerant pipeline to form the evaporating flow paths, and the condenser includes a third refrigerant pipeline to form the condensing flow path; the first refrigerant pipeline includes a first shunt pipe, the second refrigerant pipeline includes a second shunt pipe, the first shunt pipe has a first shunt passage, the second shunt pipe has a second shunt passage, the first shunt passage and the second shunt passage are independent of each other and are in communication with one of the evaporating flow paths, and the first shunt pipe and the second shunt pipe are arranged in a cross manner on the same side of the evaporator.

[0026] In one embodiment, the first refrigerant pipeline and the second refrigerant pipeline each further include a plurality of evaporating pipelines, and the plurality of evaporating pipelines are arranged in sequence along the direction from the windward side to the leeward side of the evaporator; the first shunt pipe is in communication with two of the evaporating pipelines of one of the evaporating flow paths, and the second shunt pipe is in communication with two of the evaporating pipelines of another of the evaporating flow paths.

[0027] In an embodiment, the evaporation pipeline comprises a plurality of evaporation straight pipes and a plurality of evaporation elbow pipes, the evaporation straight pipes are arranged along the third direction, two ends of the evaporation elbow pipes are connected with two adjacent evaporation straight pipes respectively, the plurality of evaporation straight pipes are arranged in multiple columns along the up-down direction, and two evaporation straight pipes in two adjacent columns are arranged in staggered positions along the up-down direction and the left-right direction.

[0028] In an embodiment, the number of the evaporation straight pipes in each column is even, so as to divide the two evaporation flow paths equally.

[0029] And / or, the plurality of evaporation straight pipes are arranged in an even number of rows along the first direction, so as to divide the two evaporation flow paths equally.

[0030] In an embodiment, the projection of the intersection point of the first and second distribution pipes arranged in a cross manner along the third direction falls on the center position of one side of the evaporator.

[0031] In an embodiment, the refrigerant inlet of each evaporation flow path is arranged close to the first side, the refrigerant outlet of each evaporation flow path is arranged close to the second side, the first side is arranged opposite to the second side, and the two evaporation flow paths are arranged in a spaced manner along the up-down direction.

[0032] And / or, the two evaporation flow paths are arranged in a spaced manner along the direction from the windward side to the leeward side of the evaporator.

[0033] The utility model also provides a washing and drying integrated machine, and the washing and drying integrated machine comprises the clothes drying device.

[0034] In an embodiment, the washing and drying integrated machine comprises a drying assembly and a washing assembly.

[0035] The clothes drying device of the utility model includes a shell, a roller and a heat pump system, the shell has an air duct, the roller has a drying cavity, the drying cavity and the air duct are communicated to form a circulating air path, the heat pump system includes a compressor and a condenser, an evaporator and an airflow driving element arranged in the air duct, under the action of the airflow driving element, the air in the air duct is heated by the condenser and then sent into the drying cavity to dry clothes, the wet hot air discharged from the drying cavity flows through the evaporator, the evaporator absorbs heat to change the wet hot air into dry low-temperature air, and the water vapor in the wet hot air is condensed into condensed water and discharged, and the dry low-temperature air flows through the condenser again to circulate, thereby realizing the function of drying clothes. And, in the case that the internal space of the clothes drying device is limited, that is, in the case that the sum of the volume of the condenser and the volume of the evaporator is limited, the volume of the condenser is limited to be not greater than the volume of the evaporator, that is, the volume of the condenser is less than or equal to the volume of the evaporator, so that the volume of the evaporator is large enough relative to the volume of the condenser, the heat exchange efficiency of the evaporator is high, the evaporator has strong dehumidification and cooling capacity for the wet hot air, so that the dehumidification amount of the evaporator is increased, and the drying time of clothes can be shortened. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0037] Figure 1 The principle schematic view of the clothes drying device provided by the utility model is shown in the figure.

[0038] Figure 2 The partial structure schematic view of the clothes drying device provided by the utility model is shown in the figure.

[0039] Figure 3 The schematic view of part of the structure in the figure. Figure 2

[0040] The sectional view of the structure in the figure. Figure 4 Figure 3 The schematic view of part of the structure in the figure.

[0041] Figure 5 Figure 3 The schematic view of part of the structure in the figure.

[0042] Figure 6 The schematic view of another view of the structure in the figure. Figure 5

[0043] Figure 7 The schematic view of another view of the structure in the figure.​​​Figure 5 A schematic diagram of the evaporator from another perspective;

[0044] Figure 8 A schematic diagram of the first embodiment of the evaporator provided in this application;

[0045] Figure 9 A schematic diagram of the second embodiment of the evaporator provided in this application;

[0046] Figure 10 A schematic diagram of the third embodiment of the evaporator provided in this application;

[0047] Figure 11 A schematic diagram of the fourth embodiment of the evaporator provided in this application;

[0048] Figure 12 A schematic diagram of the fifth embodiment of the evaporator provided in this application;

[0049] Figure 13 for Figure 5 A schematic diagram of the condenser from another perspective.

[0050] Explanation of icon numbers:

[0051] 10. Clothes drying device;

[0052] 100. Shell; 110. Air duct; 120. Circulating air path;

[0053] 200. Drum; 210. Drying chamber; 220. Air inlet; 230. Air outlet;

[0054] 300. Heat pump system; 310. Compressor; 311. Exhaust port; 320. Condenser; 321. Condenser straight pipe; 322. Condenser elbow; 323. Condenser flow path; 330. Evaporator; 331. Evaporation flow path; 332. Refrigerant inlet; 333. Refrigerant outlet; 334. Distribution connector; 335. First branch pipe; 336. Second branch pipe; 337. Evaporator piping; 3371. Evaporator straight pipe; 3372. Evaporator elbow; 340. Airflow drive component; 350. Refrigerant circulation loop;

[0055] 400. Drainage components;

[0056] 500. Filter components.

[0057] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0058] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0059] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0060] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0061] In the related art, the clothes drying device is used for drying clothes, bed sheets, curtains and the like. The existing clothes drying device has a long drying time, which affects user use. In the traditional scheme, the drying efficiency is improved by increasing the pipeline of the evaporator or the condenser, but the size of the heat pump is increased, and the increase of the pipeline further increases the flow resistance. In a washing and drying integrated device, there are both washing structures and drying structures, and the space is limited, and the heat pump system needs to improve the drying efficiency in the limited space.

[0062] Therefore, the present application provides a clothes drying device and a washing and drying integrated machine, which can shorten the drying time of clothes. The clothes drying device is used for drying clothes, bed sheets, curtains and the like. The washing and drying integrated machine not only can complete the function of washing clothes, but also can directly dry after washing, and the user does not need to move the clothes from the washing machine to the dryer, that is, the washing and drying integrated machine has the functions of washing and drying.

[0063] Please refer to Figures 1 to 6In an embodiment of the present application, the laundry drying apparatus 10 includes a housing 100 having an air duct 110, a drum 200 having a drying cavity 210 in communication with the air duct 110 to form a circulating air path 120, and a heat pump system 300 including a compressor 310 and a condenser 320, an evaporator 330, and an airflow driving member 340 disposed in the air duct 110, the airflow driving member 340 being configured to drive air to circulate in the circulating air path 120. The condenser 320 has a volume not greater than that of the evaporator 330. The compressor 310 discharges refrigerant that flows through the condenser 320 and then through the evaporator 330 to form a refrigerant circulation loop 350.

[0064] Figure 1 The laundry drying apparatus 10 is schematically illustrated in FIG. 1. The working principle of the laundry drying apparatus 10 is described below with reference to FIG. 2. Figure 1 The working principle of the laundry drying apparatus 10 is as follows. The compressor 310 discharges refrigerant along the refrigerant circulation loop 350. The refrigerant releases heat at the condenser 320 and then absorbs heat at the evaporator 330 before returning to the compressor 310. The airflow driving member 340 sends air heated at the condenser 320 to the drum 200 to dry laundry. The hot and humid air flowing out of the drum 200 flows through the evaporator 330, which changes the hot and humid air into dry and cold air, and condenses water vapor in the hot and humid air into condensate water. The dry and cold air is heated again at the condenser 320, and the cycle is repeated. The laundry drying apparatus 10 removes moisture through this cycle and discharges the moisture in the form of condensate water, thereby achieving the function of drying laundry.

[0065] The drum 200 is rotatably disposed in the housing 100. The heat pump system 300 is disposed in the housing 100. The condenser 320 and the evaporator 330 are disposed below the drum 200 and spaced apart from the drum 200 to prevent the drum 200 from colliding with the heat pump system 300 during the washing and dehydration stages. The heat pump system 300 can also be separably disposed in the housing 100 to facilitate disassembly and maintenance or replacement.

[0066] In an embodiment, the drum 200 has a drying cavity 210, and an air inlet portion 220 and an air outlet portion 230 in communication with the drying cavity 210. One end of the air duct 110 is in communication with the air inlet portion 220, and the other end of the air duct 110 is in communication with the air outlet portion 230. The airflow driving member 340 is configured to drive air to flow through the condenser 320, the air inlet portion 220, the drying cavity 210, the air outlet portion 230, and the evaporator 330 in sequence to form the circulating air path 120.

[0067] In an embodiment, the air flow driving member 340 can be a fan, and can also be other components, which are not limited herein. In addition, the clothes drying device 10 further comprises a drainage assembly 400, which comprises a water collecting tray for collecting the condensed water condensed by the evaporator 330. Of course, the drainage assembly 400 can further comprise a drainage pump for draining the condensed water collected by the water collecting tray.

[0068] In an embodiment, the clothes drying device 10 further comprises a filter member 500 arranged in the circulating air path 120 between the air outlet portion 230 of the drum 200 and the evaporator 330. The filter member 500 comprises a filter screen for filtering the sundries such as lint and the like in the wet hot air discharged from the air outlet portion 230.

[0069] The clothes drying device 10 comprises a housing 100. In the case that the size of the housing 100 is limited, for example, the size of the housing 100 of the product cannot be changed, and it is required to maintain the existing size of the housing 100, it is more difficult to shorten the drying time of the clothes.

[0070] In the case that the size of the housing 100 is limited, the total size of the condenser 320 and the evaporator 330 is limited, that is, the total volume of the condenser 320 and the evaporator 330 is limited to a preset value and cannot be increased. The evaporator 330 comprises heat exchange tubes. The area of the windward surface of the condenser 320 and the evaporator 330 in the housing 100 is small. Increasing the number of rows of the heat exchange tubes will increase the thickness of the evaporator 330, and will also increase the air resistance in the air duct 110. Therefore, the scheme of increasing the number of rows of the heat exchange tubes of the evaporator 330 cannot meet the requirement of keeping the size of the housing 100 unchanged, and cannot solve the problem of shortening the drying time of the clothes.

[0071] In a conventional clothes dryer, in order to increase the heating capacity, the volume of the condenser 320 is set to be large. However, in the case that the space in the housing 100 is limited, setting the volume of the condenser 320 to be large will occupy the volume of the evaporator 330, so that the volume of the evaporator 330 is small, the dehumidification and cooling capacity of the evaporator 330 is poor, the amount of water removed from the drum 200 by the heat pump system 300 is greater than the dehumidification capacity of the evaporator 330, thereby reducing the dehumidification efficiency and affecting the drying time.

[0072] Therefore, the technical scheme of the present application limits the volume of the condenser 320 to be not greater than the volume of the evaporator 330, and ensures that the volume of the evaporator 330 is large enough and the heat exchange efficiency of the evaporator 330 is high, so that the evaporator 330 has strong dehumidification and cooling capacity for the hot and humid air, thereby increasing the dehumidification amount of the evaporator 330 and shortening the drying time of the clothes.

[0073] The clothes drying device 10 comprises a shell 100, a drum 200 and a heat pump system 300. The shell 100 has an air duct 110, and the drum 200 has a drying cavity 210. The drying cavity 210 and the air duct 110 are communicated to form a circulating air path 120. The heat pump system 300 comprises a compressor 310, a condenser 320, an evaporator 330 and an airflow driving member 340 arranged in the air duct 110. Under the action of the airflow driving member 340, the air in the air duct 110 is heated by the condenser 320 and then sent into the drying cavity 210 to dry the clothes. The hot and humid air discharged from the drying cavity 210 flows through the evaporator 330, which absorbs heat to change the hot and humid air into dry and low-temperature air, and the water vapor in the hot and humid air is condensed into condensed water. The dry and low-temperature air flows through the condenser 320 again to realize the function of drying clothes. In the case that the internal space of the clothes drying device 10 is limited, i.e. the volume of the condenser 320 and the volume of the evaporator 330 are limited, the volume of the condenser 320 is limited to be not greater than the volume of the evaporator 330, i.e. the volume of the condenser 320 is less than or equal to the volume of the evaporator 330. Therefore, the volume of the evaporator 330 is large enough, the heat exchange efficiency of the evaporator 330 is high, the evaporator 330 has strong dehumidification and cooling capacity for the hot and humid air, the dehumidification amount of the evaporator 330 is increased, and the drying time of the clothes is shortened.

[0074] As known from the foregoing, in the conventional clothes dryer, the volume of the condenser 320 is set to be large, the volume of the evaporator 330 in the conventional clothes dryer is less than the volume of the condenser 320, the dehumidification and cooling capacity of the evaporator 330 in the conventional clothes dryer is poor, and the drying time is affected.

[0075] Therefore, in an embodiment of the present application, the volume of the condenser 320 is V1, the volume of the evaporator 330 is V2, the ratio of V1 to V2 is not less than 0.8 and not greater than 1.0.

[0076] It can be understood that the specific value of the ratio of the volume V1 of the condenser 320 to the volume V2 of the evaporator 330 is not limited, for example but not limited to: 0.8, or 0.81, or 0.82, or 0.83, or 0.84, or 0.85, or 0.86, or 0.87, or 0.88, or 0.89, or 0.90, or 0.91, or 0.92, or 0.93, or 0.94, or 0.95, or 0.96, or 0.97, or 0.98, or 0.99, or 1.0, etc.

[0077] The sum of the volume V1 of the condenser 320 and the volume V2 of the evaporator 330 is V3, and by limiting the ratio of the volume V1 of the condenser 320 to the volume V2 of the evaporator 330, it is equivalent to limiting the ratio of the volume V2 of the evaporator 330 to V3, that is, under the condition that the sum of the volume V1 of the condenser 320 and the volume V2 of the evaporator 330 is constant, by limiting the proportion of the volume V2 of the evaporator 330 in V3, it is ensured that the evaporator 330 has sufficient size, thereby improving the dehumidification and cooling capacity of the evaporator 330.

[0078] The ratio of V1 to V2 is not less than 0.8 and not greater than 1.0, which means that the volume V1 of the condenser 320 is less than or equal to the volume V2 of the evaporator 330, so that the volume V2 of the evaporator 330 is large enough relative to the volume V1 of the condenser 320, and the evaporator 330 has sufficient dehumidification and cooling capacity.

[0079] Please refer to Figure 1 , the dehumidification amount of the closed-loop heat pump system 300, and the wet amount is:

[0080] The dehumidification amount C = the humidity content G1 of the drum outlet air - the humidity content G2 of the evaporator outlet air;

[0081] The wet amount D = the humidity content G1 of the drum outlet air - the humidity content G3 of the drum inlet air;

[0082] For the closed-loop heat pump system 300, the condenser 320 is an isohumid heating process, that is, the humidity content G2 of the evaporator outlet air = the humidity content G3 of the drum inlet air, that is, during the drying process, the dehumidification amount and the wet amount of the closed-loop heat pump system 300 are always in a dynamic balance process.

[0083] As can be seen from the above relationship, reducing the humidity content G2 of the evaporator outlet air can improve the dehumidification amount and the wet amount of the evaporator 330, that is, improve the dehumidification capacity and the wet capacity of the evaporator 330, and the humidity content G2 of the evaporator outlet air is proportional to the outlet air temperature of the evaporator 330.

[0084] Therefore, by limiting the ratio of the volume V1 of the condenser 320 to the volume V2 of the evaporator 330, the volume V2 of the evaporator 330 in the volume V3 is limited, that is, under the condition that the total volume of the volume V1 of the condenser 320 and the volume V2 of the evaporator 330 is constant, by ensuring that the evaporator 330 has sufficient volume, compared with the conventional scheme, the volume of the evaporator 330 is increased, so that the outlet air temperature of the evaporator 330 can be reduced, and the humidity content of the evaporator outlet air is reduced, so that the dehumidification capacity of the evaporator 330 is increased, and the dehumidification capacity and the wet capacity of the heat pump system 300 are improved, and the drying time of the clothes is shortened.

[0085] Please refer to Figure 5 and Figure 6 In an embodiment, in the direction from the windward surface to the leeward surface of the condenser 320, the width of the condenser 320 is W1; in the direction from the windward surface to the leeward surface of the evaporator 330, the width of the evaporator 330 is W2, and the ratio of W1 to W2 is not less than 0.8 and not greater than 1.0.

[0086] It can be understood that, as Figure 5 shown, the direction from the windward surface to the leeward surface of the evaporator 330 is the first direction, that is, in the first direction, the specific value of the ratio of the width W1 of the condenser 320 to the width W2 of the evaporator 330 is not limited, for example, but not limited to: 0.8, or 0.81, or 0.82, or 0.83, or 0.84, or 0.85, or 0.86, or 0.87, or 0.88, or 0.89, or 0.90, or 0.91, or 0.92, or 0.93, or 0.94, or 0.95, or 0.96, or 0.97, or 0.98, or 0.99, or 1.0, etc.

[0087] The area of the windward surface of the condenser 320 can be equal to the area of the windward surface of the evaporator 330. Of course, the area of the windward surface of the condenser 320 can also be different from the area of the windward surface of the evaporator 330, which is not limited here.

[0088] In the embodiment, the area of the windward surface of the condenser 320 is equal to the area of the windward surface of the evaporator 330, and the sum of the volume V1 of the condenser 320 and the volume V2 of the evaporator 330 is V3. By limiting the ratio of the width W1 of the condenser 320 to the width W2 of the evaporator 330, the ratio of the volume V1 of the condenser 320 to the volume V2 of the evaporator 330 is limited, and the ratio of the volume V2 of the evaporator 330 to V3 is limited, that is, under the condition that the sum of the volume V1 of the condenser 320 and the volume V2 of the evaporator 330 is constant, by limiting the proportion of the volume V2 of the evaporator 330 in V3, it is ensured that the evaporator 330 has sufficient size, thereby improving the dehumidification and cooling capacity of the evaporator 330.

[0089] The ratio of W1 to W2 is not less than 0.8 and not greater than 1.0, which means that the width W1 of the condenser 320 is less than or equal to the width W2 of the evaporator 330, so that the width W2 of the evaporator 330 is large enough relative to the width W1 of the condenser 320, that is, the volume V2 of the evaporator 330 is large enough, so that the evaporator 330 has sufficient dehumidification and cooling capacity.

[0090] In an embodiment, the width W1 of the condenser 320 ranges from 30 mm to 60 mm; and / or, the width W2 of the evaporator 330 ranges from 40 mm to 60 mm. The value of W1 is not limited and can be 30 mm, or 32 mm, or 34 mm, or 36 mm, or 38 mm, or 40 mm, or 42 mm, or 44 mm, or 46 mm, or 48 mm, or 50 mm, or 52 mm, or 54 mm, or 56 mm, or 58 mm, or 60 mm, etc. The value of W2 is not limited and can be 40 mm, or 42 mm, or 44 mm, or 46 mm, or 48 mm, or 50 mm, or 52 mm, or 54 mm, or 56 mm, or 58 mm, or 60 mm, etc.

[0091] Please refer to Figure 4In an embodiment, the evaporator 330 and the condenser 320 are arranged side by side in the first direction, and the width between the windward surface of the evaporator 330 and the leeward surface of the condenser 320 is W3 in the first direction; the width of the shell 100 is W4 in the second direction, the first direction intersects the second direction; the ratio of W3 to W4 is not less than 0.1 and not greater than 0.25. In this way, the ratio of the sum of the width of the evaporator 330 and the width of the condenser 320 to the width of the shell 100 is between 0.1 and 0.25, and the specific value of the ratio of W3 to W4 is not limited, for example, but not limited to: 0.1, or 0.15, or 0.2, or 0.25, etc. In the case of determining the total width of the evaporator 330 and the condenser 320, the ratio of the width W1 of the condenser 320 to the width W2 of the evaporator 330 is limited within the range of the foregoing embodiment, so as to ensure that the width W2 of the evaporator 330 is large enough, thereby ensuring that the evaporator 330 has sufficient size, and further improving the dehumidification and cooling capacity of the evaporator 330.

[0092] Please refer to Figures 5 to 7 In an embodiment, the evaporator 330 and the condenser 320 are arranged in sequence in the first direction, the condenser 320 includes a plurality of condensing straight pipes 321 and a condensing elbow pipe 322 connecting adjacent two condensing straight pipes 321, the evaporator 330 includes a plurality of evaporating straight pipes 3371 and an evaporating elbow pipe 3372 connecting adjacent two evaporating straight pipes 3371, the plurality of condensing straight pipes 321 and the plurality of evaporating straight pipes 3371 are arranged in the third direction, the plurality of condensing straight pipes 321 and the plurality of evaporating straight pipes 3371 are arranged in multiple rows in the first direction, and the first direction is perpendicular to the third direction; the number of rows of the condensing straight pipes 321 in the condenser 320 is less than or equal to the number of rows of the evaporating straight pipes 3371 in the evaporator 330.

[0093] It can be understood that the evaporator 330 and the condenser 320 can also include heat exchange fins, and the first refrigerant pipeline and the second refrigerant pipeline form at least two independent evaporating flow paths 331; the third refrigerant pipeline forms at least one condensing flow path. The number of rows of the condensing straight pipes 321 in the condenser 320 can be 3 rows, or 4 rows, or 5 rows, or other number of rows. The number of rows of the evaporating straight pipes 3371 in the evaporator 330 can be 3 rows, or 4 rows, or 5 rows, or other number of rows. Only the number of rows of the condensing straight pipes 321 in the condenser 320 is not greater than the number of rows of the evaporating straight pipes 3371 in the evaporator 330 is required.

[0094] By limiting the number of rows of the condensing straight tubes 321 in the condenser 320 to be less than or equal to the number of rows of the evaporating straight tubes 3371 in the evaporator 330, it is equivalent to limiting the width of the condenser 320 to be less than or equal to the width of the evaporator 330, so that the width of the evaporator 330 is large enough relative to the width of the condenser 320, that is, the volume of the evaporator 330 is large enough, so that the evaporator 330 has sufficient dehumidification and cooling capacity.

[0095] In an embodiment, the number of rows of the condensing straight tubes 321 in the condenser 320 is the same as the number of rows of the evaporating straight tubes 3371 in the evaporator 330 along the first direction; the plurality of condensing straight tubes 321 and the plurality of evaporating straight tubes 3371 are arranged in multiple columns along the up-down direction, and the number of condensing straight tubes 321 in each column is greater than the number of evaporating straight tubes 3371 in each column. As shown in Figure 5 and Figure 6 As shown, the number of rows of the condensing straight tubes 321 in the condenser 320 is 4 rows, and the number of rows of the evaporating straight tubes 3371 in the evaporator 330 is 4 rows, at this time the number of rows of the condensing straight tubes 321 in the condenser 320 is equal to the number of rows of the evaporating straight tubes 3371 in the evaporator 330; the number of condensing straight tubes 321 in each column is 9, and the number of evaporating straight tubes 3371 in each column is 6, at this time the number of condensing straight tubes 321 in each column is greater than the number of evaporating straight tubes 3371 in each column, to ensure that the evaporator 330 has at least two independent evaporating flow paths 331; and at this time the volume V1 of the condenser 320 is less than or equal to the volume V2 of the evaporator 330. In this way, the total volume of the volume of the condenser 320 and the volume of the evaporator 330 on a certain basis can ensure that the evaporator 330 has sufficient volume, that is, it ensures that the evaporator 330 has sufficient size, thereby improving the dehumidification and cooling capacity of the evaporator 330.

[0096] In an embodiment, the width W1 of the condenser 320 is 40 mm, and the width W2 of the evaporator 330 is 48 mm. In this way, the width W1 of the condenser 320 is less than the width W2 of the evaporator 330, so that the width of the evaporator 330 is large enough relative to the width of the condenser 320, that is, the volume of the evaporator 330 is large enough, so that the evaporator 330 has sufficient dehumidification and cooling capacity.

[0097] In an embodiment, the width W1 of the condenser 320 is 40 mm, the number of rows of the condensing straight tubes 321 in the condenser 320 is 4 rows, and the width of each row of the condensing straight tubes 321 is 10 mm; the width W2 of the evaporator 330 is 48 mm, the number of rows of the evaporating straight tubes 3371 in the evaporator 330 is 4 rows, and the width of each row of the evaporating straight tubes 3371 is 12 mm. In this way, the width of each row of the evaporating straight tubes 3371 is greater than the width of each row of the condensing straight tubes 321, and the width of the evaporator 330 is greater than the width of the condenser 320. In this way, under the same conditions in the length direction and the height direction, that is, the total volume of the volume of the condenser 320 and the volume of the evaporator 330 is on a certain basis, the evaporator 330 can have sufficient volume, that is, the evaporator 330 can have sufficient size, thereby improving the dehumidification and cooling capacity of the evaporator 330.

[0098] In an embodiment, the inner diameter of the evaporating straight tube 3371 is greater than the inner diameter of the condensing straight tube 321. In this way, the smoothness of the refrigerant flowing through the evaporator 330 is improved, the flow resistance of the refrigerant flowing through the evaporator is reduced, the pressure loss of the refrigerant flowing through the evaporator is reduced, the suction pressure of the suction port of the compressor is improved, the exhaust temperature of the exhaust port of the compressor is reduced, and the compressor can operate at a high frequency for a long time. On the basis of the same pipe wall thickness, that is, the outer diameter of the evaporating straight tube 3371 is greater than the outer diameter of the condensing straight tube 321; and in order to ensure the uniformity of heat exchange, the distance between two adjacent straight tubes in the condenser 320 and the evaporator 330 is the same, which is equivalent to limiting the width of the condenser 320 to be less than the width of the evaporator 330. As known from the foregoing, the width of the evaporator 330 is large enough, that is, the volume of the evaporator 330 is large enough, so that the evaporator 330 has sufficient dehumidification and cooling capacity.

[0099] In an embodiment, the outer diameter of the evaporating straight tube 3371 is 6 mm to 9 mm; and / or, the outer diameter of the condensing straight tube 321 is 4 mm to 7 mm. The outer diameter of the evaporating straight tube 3371 is not limited, and can be 6 mm, or 6.5 mm, or 7.0 mm, or 7.5 mm, or 8.0 mm, or 8.5 mm, or 9.0 mm, etc. The outer diameter of the condensing straight tube 321 is not limited, and can be 4 mm, or 4.5 mm, or 5.0 mm, or 5.5 mm, or 6.0 mm, or 6.5 mm, or 7.0 mm, etc.

[0100] In an embodiment, the outer diameter of the evaporating straight tube 3371 is 7 mm, and the outer diameter of the condensing straight tube 321 is 5 mm.

[0101] In an embodiment, the plurality of condensing straight tubes 321 and the plurality of evaporating straight tubes 3371 are arranged to extend along a third direction, which is perpendicular to the first direction. In this way, the uniformity of the air flowing through the condenser 320 and the evaporator 330 for heat exchange is improved.

[0102] In an embodiment, the operation stage of the clothes drying apparatus 10 includes a temperature rising stage and a temperature maintaining stage, and the compressor 310 includes a variable frequency compressor 310; in the temperature rising stage, the variable frequency compressor 310 first increases the frequency and then decreases the frequency to a preset high frequency to enter the temperature maintaining stage; in the temperature maintaining stage, the variable frequency compressor 310 operates at the preset high frequency, and the frequency of the preset high frequency is not less than 70 Hz.

[0103] It can be understood that the heat pump system 300 adopts the variable frequency compressor 310, and the clothes drying apparatus 10 is provided with a fast drying mode and an energy saving mode. In the energy saving mode, the compressor 310 operates at a low frequency to reduce the energy consumption of the compressor 310.

[0104] In the fast drying mode, the compressor 310 needs to operate at a safety protection temperature (the condenser 320 temperature T1 and the compressor 310 exhaust temperature T2 described later), and the drying stage of the fast drying mode includes a pre-stage temperature rising stage and a post-stage temperature maintaining stage. In the pre-stage temperature rising stage, the compressor 310 operates at a highest operating frequency, which can be 100 Hz or other values. When the temperature sensor detects that the safety protection temperature exceeds the standard, the controller of the clothes drying apparatus 10 controls the compressor 310 to reduce the operating frequency until the temperature is within the safety protection temperature. Then, the compressor 310 enters the temperature maintaining stage at a preset high frequency, and the variable frequency compressor 310 stably operates at the preset high frequency in the temperature maintaining stage.

[0105] In the present embodiment, in the temperature maintaining stage, the variable frequency compressor 310 operates at a preset high frequency, and the frequency of the preset high frequency is not less than 70 Hz. In this way, the frequency of the compressor 310 in the temperature maintaining stage is improved, that is, the refrigeration and heating capacity of the compressor 310 is improved, which is beneficial to improve the drying efficiency of the clothes and thus shorten the drying time of the clothes. The frequency of the preset high frequency can be 70 Hz, or 72 Hz, or 74 Hz, or 76 Hz, or 78 Hz, or 80 Hz, or 82 Hz, or 84 Hz, or 85 Hz, or 86 Hz, or 87 Hz, or 88 Hz, or 89 Hz, or 90 Hz, etc.

[0106] In an embodiment, the variable frequency compressor 310 has an exhaust port 311 which is communicated with the refrigerant circulation loop 350, and the temperature of the refrigerant exhausted from the exhaust port 311 is not higher than 110 degrees Celsius in the temperature stabilizing stage. In this way, when the compressor 310 is operated in the temperature stabilizing stage, the exhaust temperature of the compressor 310 is limited to be not higher than 110 degrees Celsius, so that the exhaust temperature of the compressor 310 is below the safety protection temperature, and the compressor 310 can be operated at high frequency for a long time, thereby avoiding the situation that the exhaust temperature of the compressor 310 exceeds the bearable range and the compressor 310 needs to be reduced in frequency or stopped, and thus the drying time of the clothes can be shortened.

[0107] In an embodiment, the temperature of the air flow blown out from the leeward side of the evaporator 330 in the circulating air path 120 is not higher than 20 degrees Celsius in the temperature stabilizing stage. In this way, the value of the humidity content G2 of the air flow blown out from the evaporator is small, and according to the dehumidification amount C = the humidity content G1 of the air flow blown out from the drum - the humidity content G2 of the air flow blown out from the evaporator, the value of G2 is small, so that the value of the dehumidification amount C is large, and thus the evaporator 330 has good dehumidification amount and wet carrying amount, i.e. the dehumidification capacity and wet carrying capacity of the evaporator 330 are improved.

[0108] In an embodiment, the condenser 320 has a condensing flow path 323 (as shown in Figure 13 Fig. 4), the evaporator 330 has an evaporating flow path 331, and the refrigerant exhausted from the compressor 310 first flows through the condensing flow path 323 and then flows through the evaporating flow path 331 to form the refrigerant circulation loop 350. In this way, the evaporator 330 is easy to manufacture, and the manufacturing cost is reduced.

[0109] Please refer to Figures 6 to 8 In an embodiment, the condenser 320 has a condensing flow path 323 (as shown in Figure 13 Fig. 4), the evaporator 330 has at least two independent evaporating flow paths 331 (as shown in Figure 7 Fig. 4), the number of the evaporating flow paths 331 of the evaporator 330 is greater than the number of the condensing flow paths 323 of the condenser 320, the at least two evaporating flow paths 331 are all communicated with the condenser 320, and the refrigerant exhausted from the compressor 310 first flows through the condensing flow path 323 and then flows through the at least two evaporating flow paths 331 to form the refrigerant circulation loop 350.

[0110] It can be understood that the evaporator 330 is provided with at least two independent evaporating flow paths 331, wherein the evaporating flow paths 331 can be two, or three, or more, and the specific number is not limited herein, as long as the evaporator 330 does not change the outer size of the existing shell 100 on the basis of having at least two independent evaporating flow paths 331.

[0111] The condenser 320 has condensing flow paths 323, and the number of the evaporating flow paths 331 of the evaporator 330 is greater than the number of the condensing flow paths 323 of the condenser 320, for example, when the number of the evaporating flow paths 331 of the evaporator 330 is two, the number of the condensing flow paths 323 of the condenser 320 is one; for another example, when the number of the evaporating flow paths 331 of the evaporator 330 is three, the number of the condensing flow paths 323 of the condenser 320 is one or two; for another example, when the number of the evaporating flow paths 331 of the evaporator 330 is four, the number of the condensing flow paths 323 of the condenser 320 is one, or two, or three. That is, only the number of the evaporating flow paths 331 of the evaporator 330 is greater than the number of the condensing flow paths 323 of the condenser 320, which is conducive to enhancing the dehumidification capacity of the clothes drying device while avoiding the situation that the discharge temperature of the compressor is too high to exceed the bearing range and needs to be reduced or stopped, thereby shortening the drying time of the clothes.

[0112] The condensing flow path 323 is a path for the refrigerant to flow through in the condenser 320. When the high-temperature and high-pressure refrigerant gas discharged by the compressor flows through the condensing flow path 323 of the condenser 320, it is condensed into high-pressure liquid by releasing heat, and in this process, the refrigerant releases heat to the surrounding environment.

[0113] In an embodiment, the condenser 320 has one condensing flow path 323, and the condensing flow path 323 has one refrigerant inlet for the refrigerant to flow in and one refrigerant outlet for the refrigerant to flow out. When the condenser has two condensing flow paths, it has two refrigerant inlets for the refrigerant to flow in and two refrigerant outlets for the refrigerant to flow out, and the two condensing flow paths are independent of each other, and the refrigerant in one condensing flow path cannot flow into the other condensing flow path. When the condenser has multiple condensing flow paths, it has multiple refrigerant inlets for the refrigerant to flow in and multiple refrigerant outlets for the refrigerant to flow out, and the multiple condensing flow paths are independent of each other, and the refrigerant in any one of the multiple condensing flow paths cannot flow into the other condensing flow path.

[0114] Similarly, the evaporating flow path 331 is a path for the refrigerant to flow through in the evaporator 330. The high-pressure liquid refrigerant enters the throttling device from the condenser, flows into the evaporator after being decompressed, and the evaporator is a component that absorbs heat of the refrigerant. The low-pressure and low-temperature refrigerant comes out of the throttling device and enters the evaporator, evaporates into low-pressure gas by absorbing heat, and returns to the compressor.

[0115] The evaporator 330 has at least two independent evaporation flow paths 331, each of which can pass refrigerant. The arrangement of the at least two evaporation flow paths 331 is not limited, for example, two adjacent evaporation flow paths 331 are arranged in a vertical direction; or two adjacent evaporation flow paths 331 are arranged in a direction from a windward side to a leeward side of the evaporator 330, that is, a width direction of the evaporator 330.

[0116] When the evaporator has two evaporation flow paths, it has two refrigerant inlets for refrigerant inflow and two refrigerant outlets for refrigerant outflow, and the two evaporation flow paths are independent of each other, and the refrigerant in one evaporation flow path cannot flow into the other evaporation flow path. When the evaporator has multiple evaporation flow paths, it has multiple refrigerant inlets for refrigerant inflow and multiple refrigerant outlets for refrigerant outflow, and the multiple evaporation flow paths are independent of each other, and the refrigerant in any one evaporation flow path of the multiple evaporation flow paths cannot flow into another evaporation flow path.

[0117] As shown in FIG. 3, Figure 13 the refrigerant flows in the condenser 320 in the direction indicated by the arrow, Figure 13 As shown in FIG. 4, the refrigerant flows in the evaporator 330 in the direction indicated by the arrow,

[0118] As shown in FIG. 5, Figures 7 to 12 the refrigerant flows in the evaporator 330 in the direction indicated by the arrow, Figures 7 to 12 As shown in FIG. 6,

[0119] Compared with the evaporator 330 having only one evaporation flow path 331, the evaporator 330 in the present application has at least two independent evaporation flow paths 331, which have strong dehumidification and cooling capacity for humid hot air, so as to increase the dehumidification amount of the evaporator 330, thereby shortening the drying time of the clothes.

[0120] The heat pump system 300 comprises a compressor 310, a condenser 320 and an evaporator 330, and the compressor 310 can be a variable frequency compressor 310. In order to protect the safety of the heat pump system 300, it is usually necessary to detect the temperature of the key components of the heat pump system 300, for example, a temperature sensor is arranged at the middle position of the pipeline of the condenser 320, when the temperature of the condenser 320 exceeds the upper limit temperature T1 (T1 is 80 degrees Celsius) corresponding to the saturated condensing pressure of the compressor 310, the compressor 310 needs to be reduced in frequency or stopped to protect the compressor 310 and ensure the reliability of the compressor 310. For another example, a temperature sensor is arranged on the exhaust pipe of the compressor 310, when the exhaust temperature of the compressor 310 exceeds the upper limit temperature T2 (T2 is 110 degrees Celsius) of the safe temperature that the compressor 310 can withstand, the compressor 310 needs to be reduced in frequency or stopped to protect the compressor 310 and ensure the reliability of the compressor 310. For another example, when the heat pump system 300 operates at different ambient temperatures, the cold medium temperature T1 on the condenser 320 (the cold medium temperature represents the temperature of the condenser 320 at a predetermined position), the exhaust temperature T2 of the compressor 310, needs to be always lower than the corresponding safe temperature for protection. When the system detects that T1 or T2 is greater than or equal to the safe temperature, the compressor 310 needs to reduce its operating frequency or even stop to ensure that the cold medium temperature T1 on the condenser 320 and the exhaust temperature T2 of the compressor 310 are always lower than the safe protection temperature, thereby ensuring the reliable operation of the heat pump system 300.

[0121] The technical solution of the present application sets the evaporator 330 to have at least two independent evaporation flow paths 331. Compared with only one evaporation flow path 331, the at least two independent evaporation flow paths 331 can disperse the flow pressure of the refrigerant, that is, can reduce the flow resistance of the refrigerant flowing through the evaporator 330, thereby reducing the pressure loss of the refrigerant flowing through the evaporator 330, and further improving the suction pressure of the suction port of the compressor 310, reducing the exhaust temperature of the exhaust port 311 of the compressor 310, so that the compressor 310 can operate at high frequency for a long time, avoiding the situation that the exhaust temperature of the compressor 310 exceeds the bearable range and needs to be reduced in frequency or stopped, so as to shorten the drying time of the clothes.

[0122] The clothes drying device 10 comprises a shell 100, a roller 200 and a heat pump system 300, the shell 100 is provided with an air duct 110, the roller 200 is provided with a drying cavity 210, the drying cavity 210 and the air duct 110 are communicated to form a circulating air path 120, the heat pump system 300 comprises a compressor 310 and a condenser 320, an evaporator 330 and an airflow driving element 340 arranged in the air duct 110, under the action of the airflow driving element 340, the air in the air duct 110 is heated by the condenser 320 and then sent into the drying cavity 210 to dry clothes, the wet hot air discharged from the drying cavity 210 flows through the evaporator 330, the evaporator 330 absorbs heat to change the wet hot air into dry low-temperature air, and the water vapor in the wet hot air is condensed into condensed water and discharged, and the dry low-temperature air flows through the condenser 320 again to realize the function of drying clothes.

[0123] Please refer to Figure 8 In an embodiment, one end of the evaporating flow path 331 is a refrigerant inlet 332, the other end of the evaporating flow path 331 is a refrigerant outlet 333, the refrigerant inlets 332 of the at least two evaporating flow paths 331 are arranged on the same side of the evaporator 330 and adjacent to each other; and / or, the refrigerant outlets 333 of the at least two evaporating flow paths 331 are arranged on the same side of the evaporator 330 and adjacent to each other.

[0124] It can be understood that the specific position of the refrigerant inlet 332 of the at least two evaporation flow paths 331 is not limited, and the specific position of the refrigerant outlet 333 of the at least two evaporation flow paths 331 is not limited. By arranging the two refrigerant inlets 332 on the same side and adjacent to each other, the length of the connecting pipeline is shortened, the pipeline arrangement is facilitated, the evaporator 330 is easy to manufacture and assemble, and the production cost is reduced. Similarly, by arranging the two refrigerant outlets 333 on the same side and adjacent to each other, the length of the connecting pipeline is shortened, the pipeline arrangement is facilitated, the evaporator 330 is easy to manufacture and assemble, and the production cost is reduced.

[0125] Please refer to Figures 5 to 7 In an embodiment, the evaporator 330 further comprises a distribution joint 334, the distribution joint 334 has at least three distribution flow channels in communication with each other; the refrigerant inlets 332 of the at least two evaporation flow paths 331 are connected to the refrigerant circulation loop 350 through one distribution joint 334; and / or, the refrigerant outlets 333 of the at least two evaporation flow paths 331 are connected to the refrigerant circulation loop 350 through one distribution joint 334.

[0126] It can be understood that for the refrigerant inlets 332 of the two evaporation flow paths 331, one of the distribution flow channels of the distribution joint 334 is connected to the refrigerant circulation loop 350, and the other two distribution flow channels of the distribution joint 334 are respectively connected to the two refrigerant inlets 332 of the two evaporation flow paths 331. For the refrigerant outlets 333 of the two evaporation flow paths 331, one of the distribution flow channels of the distribution joint 334 is connected to the refrigerant circulation loop 350, and the other two distribution flow channels of the distribution joint 334 are respectively connected to the two refrigerant outlets 333 of the two evaporation flow paths 331. Exemplarily, the distribution joint 334 is a multi-way pipe, and in this scheme, the distribution joint 334 is a three-way pipe. By using the distribution joint 334 for connection, the number of pipes is reduced, the pipe layout of the evaporator 330 is simplified, the production cost is reduced, and the efficiency of the refrigerant flowing through the at least two evaporation flow paths 331 is improved. In addition, by assembling the distribution joint 334 at the position of the refrigerant inlet 332 of the two evaporation flow paths 331, the structure of the original compressor refrigerant outlet pipeline can be unchanged, that is, the refrigerant inlet 332 of the evaporator 330 is directly connected to the original compressor refrigerant outlet pipeline through one distribution joint 334, so that the assembly is more simple.

[0127] Please refer to Figures 5 to 7In an embodiment, the evaporator 330 and the condenser 320 are arranged in sequence along the first direction, the evaporator 330 includes at least a first refrigerant pipe and a second refrigerant pipe to form the evaporating flow path 331, and the condenser 320 includes a third refrigerant pipe to form the condensing flow path 323; the first refrigerant pipe includes a first shunt pipe 335, and the second refrigerant pipe includes a second shunt pipe 336, the first shunt pipe 335 has a first shunt passage, and the second shunt pipe 336 has a second shunt passage, the first shunt passage and the second shunt passage are independent of each other and respectively communicate with one of the evaporating flow paths 331, and the first shunt pipe 335 and the second shunt pipe 336 are arranged in cross at the same side of the evaporator 330.

[0128] It can be understood that, as shown in Figure 7 , the refrigerant flows in the evaporator 330 along the direction indicated by the arrow, Figure 7 , the evaporator 330 has two independent evaporating flow paths 331, wherein the thick solid line arrow represents the flow direction of the refrigerant in the pipe located at the front side of the evaporator 330, and the thick dashed line arrow represents the flow direction of the refrigerant in the pipe located at the back side of the evaporator 330. The refrigerant inlets 332 of the two evaporating flow paths 331 are connected by a distribution joint 334, and the refrigerant outlets 333 of the two evaporating flow paths 331 are connected by a distribution joint 334.

[0129] Figure 7 The first shunt pipe 335 and the second shunt pipe 336 in the evaporator 330 are arranged in cross at the same side, that is, one of the first shunt pipe 335 and the second shunt pipe 336 is arranged in front of the other, and one of the first shunt passage and the second shunt passage is located in front of the other. Specifically, in this scheme, the first shunt pipe 335 is arranged in front of the second shunt pipe 336, so that the refrigerant changes the flow direction and path when flowing through the first shunt passage and the second shunt passage in the evaporator 330, avoiding the problem of too fast or too slow local flow rate, and ensuring that the refrigerant can be uniformly heat-exchanged in the evaporator 330, thereby improving the influence of the upper and lower temperature difference of the two evaporating flow paths 331 in the evaporator 330 on the reversing performance.

[0130] In an embodiment, the first refrigerant pipe and the second refrigerant pipe further respectively include a plurality of evaporating pipes 337, and the plurality of evaporating pipes 337 are arranged in sequence along the direction from the windward side to the leeward side of the evaporator 330; the first shunt pipe 335 connects two evaporating pipes 337 of one of the evaporating flow paths 331, and the second shunt pipe 336 connects two evaporating pipes 337 of the other of the evaporating flow paths 331.

[0131] It can be understood that, as shown in Figure 7 and Figure 8As shown, the evaporator 330 has two independent evaporation flow paths 331, a first distribution pipe 335 connects two evaporation pipelines 337 of one of the evaporation flow paths 331 to form a communication flow channel, and a second distribution pipe 336 connects two evaporation pipelines 337 of the other of the evaporation flow paths 331 to form a communication flow channel.

[0132] Please refer to Figure 5 and Figure 6 In an embodiment, the evaporation pipeline 337 includes a plurality of evaporation straight pipes 3371 and a plurality of evaporation elbow pipes 3372. The evaporation straight pipes 3371 are arranged in the third direction, and the two ends of the evaporation elbow pipes 3372 are respectively connected to two adjacent evaporation straight pipes 3371. The plurality of evaporation straight pipes 3371 are arranged in multiple columns in the up-down direction, and two evaporation straight pipes 3371 in adjacent two columns are staggered in the up-down direction and the left-right direction.

[0133] It can be understood that, in Figure 5 and Figure 6 , one evaporation pipeline 337 includes three evaporation straight pipes 3371 and two evaporation elbow pipes 3372. The three evaporation straight pipes 3371 are connected by the two evaporation elbow pipes 3372 to form a communication flow channel, thereby ensuring the continuity of the refrigerant flow. In addition, two evaporation straight pipes 3371 in adjacent two columns are staggered in the up-down direction and the left-right direction, that is, adjacent two evaporation straight pipes 3371 have a height difference in the up-down direction and the left-right direction. In this way, the installation space can be saved, and the space utilization rate of the evaporator 330 is high.

[0134] In an embodiment, the evaporation flow path 331 is repeatedly folded and arranged in the up-down direction and the front-back direction. In this way, not only the length of the evaporation flow path 331 can be increased, but also the space occupied by the evaporation flow path 331 can be effectively reduced, and the contact area with the air can be increased, thereby improving the heat exchange effect. In addition, by repeatedly folding and arranging, the vibration and noise of the pipeline of the evaporation flow path 331 due to the flow of the refrigerant can be reduced.

[0135] In an embodiment, the projection of the intersection point of the first distribution pipe 335 and the second distribution pipe 336 arranged in cross arrangement along the third direction falls on the center position of one side of the evaporator. In this way, the overall structure of the evaporator 330 is regular, which is conducive to ensuring that the refrigerant can be uniformly heat exchanged in the evaporator 330, thereby improving the influence of the temperature difference between the two evaporation flow paths 331 in the evaporator 330 on the reversing performance.

[0136] In an embodiment, the refrigerant inlet 332 of each of the two evaporation flow paths 331 is arranged close to the first side, the refrigerant outlet 333 of each of the two evaporation flow paths 331 is arranged close to the second side, the first side is arranged opposite to the second side; the two evaporation flow paths 331 are arranged in a vertical direction; and / or, the two evaporation flow paths 331 are arranged in a direction from the windward side to the leeward side of the evaporator 330.

[0137] It can be understood that, as shown in Figure 9 , Figure 10 and Figure 11 , the two evaporation flow paths 331 are arranged in a vertical direction; as shown in Figure 12 , the two evaporation flow paths 331 are arranged in a direction from the windward side to the leeward side of the evaporator 330.

[0138] In Figures 8 to 10 , the refrigerant inlet 332 of each of the two evaporation flow paths 331 is arranged close to the first side, the refrigerant outlet 333 of each of the two evaporation flow paths 331 is arranged close to the second side, the two evaporation flow paths 331 are used to split the refrigerant flowing into the evaporator 330, increase the heat exchange amount with the hot and humid air, and improve the dehumidification and cooling capacity of the hot and humid air, so as to increase the dehumidification amount of the evaporator 330.

[0139] In addition, the two independent evaporation flow paths 331 can reduce the resistance caused by the too long evaporation flow path 331, reduce the flow resistance of the refrigerant flowing through the evaporator 330, thereby reducing the pressure loss of the refrigerant flowing through the evaporator 330, and further improving the suction pressure of the suction port of the compressor 310, reducing the exhaust temperature of the exhaust port 311 of the compressor 310, so that the compressor 310 can operate at a high frequency for a long time, avoiding the situation that the exhaust temperature of the compressor 310 exceeds the bearable range and needs to be reduced in frequency or stopped, so as to shorten the drying time of the clothes.

[0140] In an embodiment, the evaporator 330 includes a plurality of evaporation straight pipes 3371 and evaporation elbow pipes 3372 connecting adjacent two evaporation straight pipes 3371, the evaporation straight pipes 3371 are arranged in a third direction, and the plurality of evaporation straight pipes 3371 are arranged in multiple columns in a vertical direction; the number of the evaporation straight pipes 3371 in each column is even, so as to be evenly divided by the two evaporation flow paths 331; and / or, the multiple columns of evaporation straight pipes 3371 are arranged in an even number of rows in a first direction, so as to be evenly divided by the two evaporation flow paths 331.

[0141] As shown in Figures 8 to 10As shown, the plurality of evaporation straight pipes 3371 are arranged in multiple columns in the up-down direction, and the number of evaporation straight pipes 3371 in each column is even, so as to be divided into two evaporation flow paths 331. In this way, the evaporation straight pipes 3371 are arranged in a transverse pipe arrangement manner, and there are 6 evaporation straight pipes 3371 in each column, a total of 4 rows, and each of the two evaporation flow paths 331 includes 12 evaporation straight pipes 3371, so that the pipe arrangement manner of the evaporator 330 is regular, and the refrigerant can be uniformly distributed in the evaporator 330, which helps to ensure that the air fully contacts all the heat exchange surfaces, thereby improving the heat exchange efficiency.

[0142] As shown in Figure 11 and Figure 12 As shown, the plurality of evaporation straight pipes 3371 are arranged in multiple columns in the up-down direction, and the number of evaporation straight pipes 3371 in each column is even, so as to be divided into two evaporation flow paths 331. In this way, the evaporation straight pipes 3371 are arranged in a transverse pipe arrangement manner, and there are 6 evaporation straight pipes 3371 in each column, a total of 4 rows, and each of the two evaporation flow paths 331 includes 12 evaporation straight pipes 3371, so that the pipe arrangement manner of the evaporator 330 is regular, and the refrigerant can be uniformly distributed in the evaporator 330, which helps to ensure that the air fully contacts all the heat exchange surfaces, thereby improving the heat exchange efficiency.

[0143] The utility model discloses still propose a kind of washing and drying integrated machine, the washing and drying integrated machine includes the laundry drying device 10 as described above, the specific structure of the laundry drying device 10 refers to above embodiment, since the washing and drying integrated machine adopts all technical solutions of above-described all embodiments, at least have all beneficial effects brought by the technical scheme of above-described embodiment, here no longer repeat.

[0144] In an embodiment, the washing and drying integrated machine includes a drying assembly and a washing assembly. The washing and drying integrated machine integrates the washing and drying processes in the same device, so that the laundry can be directly dried after washing without transferring the wet laundry to another dryer or drying. The washing assembly is mainly used for cleaning the laundry, including but not limited to cleaning, decontamination and rinsing steps. The washing assembly includes a drum for stirring the laundry to improve the cleaning effect. The washing assembly can also include a motor and a drive system for driving the drum to rotate. The washing assembly can also include a water pump and a water pipe system for water injection and drainage to ensure water level control, sewage discharge and rinsing during the washing process. The washing assembly can also include a detergent box or a dispensing system for placing laundry detergent, laundry powder, softener and other washing and care products. The drying assembly can include the aforementioned housing 100, drum 200 and heat pump system 300, and the drying assembly is used for drying the washed laundry to make the laundry not wet.

[0145] The washing and drying all-in-one machine includes a washing assembly and a drying assembly, the washing assembly includes a water inlet system, a drainage system, a liquid inlet system, a damping system, etc., and the drying assembly includes a heat pump system, a drying channel assembly, etc. The washing and drying all-in-one machine needs to place the washing assembly and the drying assembly in a limited space, so the installation space of the heat pump system is severely limited, and in addition, the space is also limited, so that the air duct flow in the washing and drying all-in-one machine is small, and the air volume is small. That is, the overall performance of the heat pump in the washing and drying all-in-one machine is limited by the installation space and the air duct flow, and the overall performance of the heat pump is low, so it is necessary to further improve the drying performance under the premise of limited space and limited air volume. The traditional evaporator and condenser are penetrated by a single refrigerant pipe through multiple bends, and the number of refrigerant pipe arrangements in the thickness direction or height direction of the evaporator or condenser is generally increased. This method must increase the size of the evaporator or condenser in the thickness direction or height direction, that is, increase the volume of the evaporator or condenser. In the washing and drying all-in-one machine, the space is limited, and the above-mentioned method cannot be used. In addition, if the efficiency of the condenser is greatly improved, the temperature near the compressor will be too high, which will affect the operation of the compressor.

[0146] In the washing and drying all-in-one machine, the above-mentioned laundry drying equipment embodiment can improve the dehumidification efficiency in a limited space to further improve the drying performance, and in the case of using a variable frequency compressor, the safety temperature of the compressor is ensured, so that the compressor will not enter the stage of high frequency and unable to run.

[0147] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A laundry drying apparatus, characterized by, The laundry drying device comprises: a housing having an air duct; a drum having a drying cavity, the drying cavity being in communication with the air duct to form a circulating air path; a heat pump system comprising a compressor and a condenser, an evaporator and an airflow driving member arranged in the air duct, the airflow driving member being configured to drive the airflow to circulate in the circulating air path; a volume of the condenser is not greater than a volume of the evaporator, and the refrigerant discharged by the compressor flows through the condenser and then the evaporator to form a refrigerant circulation loop.

2. The clothes drying apparatus of claim 1, wherein, The volume of the condenser is V1, and the volume of the evaporator is V2, and the ratio of V1 to V2 is not less than 0.8 and not greater than 1.

0.

3. The clothes drying device as described in claim 2, characterized in that, In the direction from the windward surface to the leeward surface of the condenser, the width of the condenser is W1; in the direction from the windward surface to the leeward surface of the evaporator, the width of the evaporator is W2; the ratio of W1 to W2 is not less than 0.8 and not greater than 1.

0.

4. The clothes drying apparatus of claim 3, wherein The evaporator and the condenser are arranged side by side in a first direction, and in the first direction, the width between the windward surface of the evaporator and the leeward surface of the condenser is W3. In a second direction, the width of the housing is W4, and the first direction intersects the second direction; the ratio of W3 to W4 is not less than 0.1 and not greater than 0.

25.

5. The clothes drying device as described in claim 3, characterized in that, The evaporator and the condenser are arranged in sequence along a first direction, the condenser comprises a plurality of condensing straight pipes and a condensing elbow pipe connecting adjacent two condensing straight pipes, the evaporator comprises a plurality of evaporating straight pipes and an evaporating elbow pipe connecting adjacent two evaporating straight pipes, the plurality of condensing straight pipes and the plurality of evaporating straight pipes are arranged in extension along a third direction, the plurality of condensing straight pipes and the plurality of evaporating straight pipes are arranged in multiple rows along the first direction, and the first direction is perpendicular to the third direction; the number of rows of condensing straight pipes in the condenser is less than or equal to the number of rows of evaporating straight pipes in the evaporator.

6. The clothes drying apparatus as described in claim 5, characterized in that, In the first direction, the number of rows of condensing straight pipes in the condenser is the same as the number of rows of evaporating straight pipes in the evaporator; the plurality of condensing straight pipes and the plurality of evaporating straight pipes are arranged in multiple columns in an up-down direction, and the number of condensing straight pipes in each column is greater than the number of evaporating straight pipes in each column.

7. The clothes drying apparatus as described in claim 5, characterized in that, The inner diameter of the evaporating straight pipe is greater than the inner diameter of the condensing straight pipe.

8. The clothes drying apparatus of claim 1, wherein, The operating stage of the laundry drying device comprises a temperature rising stage and a temperature maintaining stage, and the compressor comprises a variable frequency compressor; In the temperature rising stage, the variable frequency compressor first increases the frequency and then decreases the frequency to a preset high frequency to enter the temperature maintaining stage; In the temperature maintaining stage, the variable frequency compressor operates at the preset high frequency, and the frequency of the preset high frequency is not less than 70 Hz.

9. The clothes drying apparatus as described in claim 8, characterized in that, The variable frequency compressor has an exhaust port, the exhaust port is communicated with the refrigerant circulation loop, and in the temperature maintaining stage, the temperature of the refrigerant discharged from the exhaust port is not higher than 110 degrees Celsius.

10. The laundry drying apparatus as claimed in any one of claims 1 to 9, wherein, The condenser has a condensing flow path, the evaporator has an evaporating flow path, and the refrigerant discharged by the compressor flows through the condensing flow path and then the evaporating flow path to form the refrigerant circulation loop.

11. The laundry drying apparatus as claimed in any one of claims 1 to 9, wherein, The condenser has a condensing flow path, the evaporator has at least two independent evaporating flow paths, the number of evaporating flow paths of the evaporator is greater than the number of condensing flow paths of the condenser, at least two evaporating flow paths are communicated with the condenser, and the refrigerant discharged by the compressor flows through the condensing flow path and then flows through at least two evaporating flow paths to form the refrigerant circulation loop.

12. The clothes drying apparatus as described in claim 11, characterized in that, One end of the evaporating flow path is a refrigerant inlet, the other end of the evaporating flow path is a refrigerant outlet, and the refrigerant inlets of at least two evaporating flow paths are arranged on the same side of the evaporator and adjacent to each other. And / or, the refrigerant outlets of at least two evaporating flow paths are arranged on the same side of the evaporator and adjacent to each other.

13. The clothes drying apparatus as described in claim 12, characterized in that, The evaporator further comprises a distribution joint having at least three distribution flow channels in communication with each other; the refrigerant inlets of at least two evaporating flow paths are communicated with the refrigerant circulation loop through one distribution joint. And / or, the refrigerant outlets of at least two evaporating flow paths are communicated with the refrigerant circulation loop through one distribution joint.

14. The clothes drying apparatus of claim 11, wherein the air flow guide is formed of a material having a thermal conductivity lower than that of the air flow guide. The evaporator and the condenser are arranged in sequence along a first direction, the evaporator includes at least a first refrigerant pipeline and a second refrigerant pipeline to form the evaporating flow path, and the condenser includes a third refrigerant pipeline to form the condensing flow path; the first refrigerant pipeline includes a first shunt pipe, the second refrigerant pipeline includes a second shunt pipe, the first shunt pipe has a first shunt channel, the second shunt pipe has a second shunt channel, the first shunt channel and the second shunt channel are independent of each other and are respectively communicated with one of the evaporating flow paths, and the first shunt pipe and the second shunt pipe are arranged in cross on the same side of the evaporator.

15. The clothes drying apparatus as described in claim 14, characterized in that, The first refrigerant pipeline and the second refrigerant pipeline further respectively include a plurality of evaporating pipelines, and the plurality of evaporating pipelines are arranged in sequence along the direction from the windward side to the leeward side of the evaporator; the first shunt pipe communicates two evaporating pipelines of one of the evaporating flow paths, and the second shunt pipe communicates two evaporating pipelines of the other of the evaporating flow paths.

16. The clothes drying apparatus of claim 15, wherein, The evaporating pipeline includes a plurality of evaporating straight pipes and a plurality of evaporating elbow pipes, the evaporating straight pipes are arranged in extension along a third direction, the two ends of the evaporating elbow pipe are respectively connected to two adjacent evaporating straight pipes, the plurality of evaporating straight pipes are arranged in multiple columns along the up-down direction, and two evaporating straight pipes in adjacent two columns are arranged in staggered positions in the up-down direction and the left-right direction.

17. The clothes drying apparatus of claim 16, wherein, The number of evaporating straight pipes in each column is even, so that two evaporating flow paths are evenly divided; And / or, the plurality of evaporating straight pipes are arranged in an even number of rows in the first direction, so that two evaporating flow paths are evenly divided.

18. The clothes drying apparatus of claim 14, wherein, The projection of the intersection point of the first shunt pipe and the second shunt pipe arranged in cross on the center position of one side of the evaporator falls in the third direction.

19. The clothes drying apparatus of claim 11, wherein, The refrigerant inlets of each of the evaporating flow paths are arranged close to a first side, the refrigerant outlets of each of the evaporating flow paths are arranged close to a second side, the first side and the second side are arranged opposite to each other, and two evaporating flow paths are arranged in interval along the up-down direction. And / or, two evaporating flow paths are arranged in interval along the direction from the windward side to the leeward side of the evaporator.

20. A washer-dryer, characterized in that, The laundry drying device according to any one of claims 1 to 19.

21. The washer-dryer according to claim 20, characterized in that, The washing and drying integrated machine comprises a drying assembly and a washing assembly.

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