Drying equipment

Abstract

The invention provides drying equipment. The drying equipment comprises a drying chamber used for containing objects to be dried; the air duct shell communicates with the drying chamber; the heat pump unit is connected to the air duct shell and is provided with a refrigerant circulating channel; the external condenser is connected to the air duct shell, can exchange heat with the external environment of the drying chamber and is connected with the refrigerant circulating channel; the operation stage of the drying equipment comprises a temperature stabilizing stage, and in the temperature stabilizing stage, the external condenser is controlled to work. In this way, low-temperature drying can be achieved, and the drying time can be shortened.

Description

Technical Field

[0001] The present application relates to the field of drying technology, and in particular to a drying device. Background Art

[0002] As living standards continue to improve, washing machines, such as those that simply wash, are increasingly insufficient. People now demand a drying function after washing, or a separate drying device for drying clothes. Drying methods generally include: electrically heated water condensation drying systems, electrically heated air condensation drying systems, and heat pump heating drying systems that combine evaporator condensation with condenser heating. Compared to the first two drying methods, heat pump drying is more energy-efficient and has broad market application prospects.

[0003] In the related art, drying equipment using heat pumps has a long drying time, and shortening this time is a research focus in this field. For example, heat pump dryers are characterized by low drying temperatures; excessively high temperatures can damage clothing. To maintain a low temperature for the items being dried in the drum, the heat pump system's power is limited, resulting in longer drying times. Summary of the Invention

[0004] The present application provides a drying device to achieve low-temperature drying and shorten the drying time.

[0005] To solve the above-mentioned technical problems, the present application adopts a technical solution: providing a drying device. The drying device comprises: a drying chamber for accommodating items to be dried; an air duct housing communicating with the drying chamber; a heat pump unit connected to the air duct housing and having a refrigerant circulation channel; and an external condenser connected to the air duct housing, capable of heat exchange with the environment outside the drying chamber, and connected to the refrigerant circulation channel. The drying device operates in a temperature stabilization phase, during which the external condenser is controlled to operate.

[0006] In which, the air duct shell also forms a heat exchange cavity connected to the drying chamber, and the heat pump unit includes a compressor, a built-in condenser and an evaporator. The built-in condenser and the evaporator are arranged in the heat exchange cavity, and the external condenser and the compressor are arranged outside the heat exchange cavity.

[0007] In which, the operation stage includes a heating stage, and the drying equipment also includes: a first fan, which is arranged outside the heat exchange chamber, and the external condenser is located between the first fan and the compressor; the first fan is controlled to stop working in the heating stage to promote heat exchange between the external condenser and the external environment; the first fan is controlled to work in the temperature stabilization stage to reduce heat exchange between the external condenser and the external environment.

[0008] The built-in condenser is connected to the external condenser, and the evaporator is connected to the built-in condenser and the inlet of the compressor respectively; the heat pump unit further includes: a throttling device, which is arranged between the built-in condenser and the evaporator.

[0009] Wherein, the outlet of the compressor is also connected to the built-in condenser.

[0010] Wherein, the external condenser is also connected to the connection point between the throttling element and the built-in condenser.

[0011] Wherein, the built-in condenser and the evaporator are arranged in the heat exchange cavity along a first horizontal direction.

[0012] Wherein, the drying equipment further comprises: a partition plate, which is arranged between the evaporator and the bottom wall of the heat exchange chamber, and the bottom wall is further provided with a water accumulation portion or a drainage hole.

[0013] Wherein, the drying equipment further includes: an air duct mechanism, which is arranged at the connection between the heat exchange cavity and the drying chamber, and its air duct is respectively connected to the heat exchange cavity and the drying chamber; and a second fan, which is arranged in the air duct.

[0014] Wherein, the heat exchange cavity is provided with an air outlet connected to the drying chamber and an air inlet arranged opposite to the air outlet; the distance between the external evaporator and the air inlet is smaller than the distance between the external evaporator and the air outlet.

[0015] The beneficial effects of the present application are: the drying equipment of the present application is provided with an external condenser, and the external condenser performs heat exchange with the external environment of the drying chamber, so that when the drying temperature reaches the expected value, that is, in the stable temperature stage, the external condenser performs heat exchange with the external environment, and the excess heat is discharged to the external environment, so that the entire drying equipment is able to maintain a higher power and will not cause the drying temperature to be too high; and because the entire drying equipment maintains a higher power, the built-in heat exchange component has a higher dehumidification capacity, which can shorten the drying time of clothes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 This is a structural diagram of the first embodiment of the drying equipment of the present application;

[0018] Figure 2This is a structural diagram of the second embodiment of the drying equipment of the present application;

[0019] Figure 3 This is a structural diagram of the third embodiment of the drying equipment of the present application;

[0020] Figure 4 This is a structural diagram of the fourth embodiment of the drying equipment of the present application;

[0021] Figure 5 This is a structural diagram of the fifth embodiment of the drying equipment of the present application;

[0022] Figure 6 yes Figure 5 Schematic diagram of the explosion structure of the drying equipment in the embodiment;

[0023] Figure 7 This is a structural diagram of part of the structure of the sixth embodiment of the drying equipment of the present application;

[0024] Figure 8 yes Figure 7 Schematic diagram of the explosion structure of the drying equipment in the embodiment. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly indicate the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0032] The drying equipment in the embodiment of the present application may include a clothes dryer, a dry-cleaner, a dryer, and other household appliances with at least a drying function. The embodiment of the present application is described using a clothes dryer as an example.

[0033] In related technologies, clothes dryers generally have a long drying time, reaching more than 100 minutes. How to shorten the drying time is a research focus in this field.

[0034] The characteristic of heat pump dryers is low-temperature drying. Too high a temperature will damage clothes. In order to maintain the temperature of the clothes in the drum at a low temperature, the power of the heat pump system is limited, resulting in a longer drying time.

[0035] For this purpose, the present application proposes a drying device such as Figure 1 As shown, Figure 1 This is a structural diagram of the first embodiment of the drying equipment of this application. The drying equipment of this embodiment includes: a drying chamber 40 (see Figure 5-Figure 8 );Air duct housing 16 (see Figure 5-Figure 8), heat pump unit 01 and external condenser 12; wherein, the drying chamber 40 is used to accommodate the objects to be dried; the air duct shell 16 is connected to the drying chamber 40; the heat pump unit 01 is connected to the air duct shell 16, and has a refrigerant circulation channel; the external condenser 12 is connected to the air duct shell 16, and can exchange heat with the external environment of the drying chamber 40, and with the refrigerant circulation channel; the operation stage of the drying equipment includes a steady temperature stage, and in the steady temperature stage, the external condenser 12 is controlled to work.

[0036] The air duct housing 16 supports the heat pump unit 01 and the external evaporator 12 to improve the structural stability of the drying equipment.

[0037] Among them, the external condenser 12 exchanges heat with the external environment of the drying chamber 40, dissipating part of the heat of the high-temperature and high-pressure refrigerant steam output from the heat pump unit 01 to the external environment, so that the temperature inside the drying chamber 40 will not be too high, thereby achieving low-temperature drying of the drying chamber 40.

[0038] The drying device of this embodiment is provided with an external condenser 12, and the external condenser 12 exchanges heat with the external environment of the drying chamber 40, so that when the drying temperature reaches the expected value, the external condenser 12 exchanges heat with the external environment, and the excess heat is discharged to the external environment, so that the entire drying device is able to maintain a higher power and will not cause the drying temperature to be too high; and because the entire drying device maintains a higher power, the built-in heat exchange components, such as the evaporator 14 of the heat pump unit 01, have a higher dehumidification capacity, which can shorten the drying time of clothes, etc.

[0039] Optionally, the heat pump unit 01 of this embodiment includes a built-in condenser 13 and an evaporator 14, the built-in condenser 13 is connected to the external condenser 12, and the evaporator 14 is respectively connected to the built-in condenser 13 and the inlet of the compressor 11; the heat pump unit 01 of this embodiment also includes a throttling device 15, which is arranged between the built-in condenser 13 and the evaporator 14.

[0040] Optionally, the air duct housing 16 is further formed with a heat exchange cavity communicating with the drying chamber 40 (see Figure 5-Figure 8 ), the built-in condenser 13 and the evaporator 14 are arranged in the heat exchange cavity to exchange heat with the internal environment of the drying chamber 40, and the external condenser 12 and the compressor 11 are arranged outside the heat exchange cavity.

[0041] Among them, the compressor 11 is the power source of the drying equipment, which is used to convert the low-temperature and low-pressure refrigerant vapor from the evaporator 14 into high-temperature and high-pressure refrigerant vapor after adiabatic compression and send it to the condenser group; the condenser group (including the external condenser 12 and the built-in condenser 13) is also connected to the throttling device 15, which is used to condense the high-temperature and high-pressure refrigerant vapor coming out of the compressor 11 under isobaric conditions and dissipate heat to the drying chamber 40, and the refrigerant in the condenser group becomes a high-pressure supercooled liquid; the throttling device 15 is also connected to the evaporator 14, and the high-pressure supercooled liquid coming out of the condenser group is throttled by the throttling device 15 to become a low-temperature and low-pressure refrigerant vapor, which enters the evaporator 14 for evaporation; the low-temperature and low-pressure refrigerant wet vapor after throttling by the throttling device 15 boils under isobaric conditions in the evaporator 14, absorbs the heat of the wet and hot medium in the drying chamber 40, and becomes a low-temperature and low-pressure refrigerant vapor to the compressor 11, and makes the water vapor in the wet and hot medium in the drying chamber 40 condensed into condensed water and discharged.

[0042] The throttling element 15 may include: an expansion valve, a throttle valve, a throttle plate, a capillary tube, etc.

[0043] Optionally, the operation phase of the drying equipment includes a heating phase and a temperature stabilization phase. In the heating phase, the external condenser is controlled not to work; in the temperature stabilization phase, the external condenser is controlled to work.

[0044] Among them, controlling the external condenser 12 to work means to make the external condenser 12 and the external environment to exchange heat effectively, so that it becomes an effective condenser; controlling the external condenser 12 to not work means to make the heat exchange between the external condenser 12 and the external environment negligible, so that it becomes an invalid condenser.

[0045] The temperature rising stage refers to the stage in which the temperature in the drying chamber increases, and the temperature stabilizing stage refers to the stage in which the temperature in the drying chamber is maintained within a set temperature range or a certain set temperature.

[0046] Among them, the heating stage is the stage in which the temperature in the drying chamber rises rapidly. During the heating stage, the temperature in the drying chamber 40 needs to rise rapidly to the preset temperature so that the liquid in the drying chamber 40 can be quickly evaporated and condensed and discharged; the temperature stabilization stage is located after the heating stage. After the temperature in the drying chamber 40 reaches the preset temperature, in order to ensure the drying effect in the drying chamber 40 and not damage the objects to be dried in the drying chamber 40, the temperature in the drying chamber 40 needs to be maintained at the set temperature or within the set temperature range.

[0047] In one application scenario, in the initial working stage of the dryer, that is, the heating stage, the external condenser 12 can be prevented from exchanging heat with the external environment, or the amount of heat exchange can be very small and can be ignored, so that the built-in condenser 13 can quickly provide heat to the drying chamber of the dryer, so that the drying chamber can be quickly heated up, which can shorten the drying time; when the drying temperature in the drying chamber reaches the preset temperature, that is, enters the steady temperature stage, the external condenser 12 is effectively exchanged with the external environment, and part of the heat in the high-pressure and high-temperature steam provided by the compressor 11 is discharged to the outside, so that the built-in condenser 13 dissipates part of the heat in the high-pressure and high-temperature steam provided by the compressor 11 into the drying chamber 40, so that the temperature in the drying chamber 40 will not be too high.

[0048] The preset temperature may be 45°C to 80°C.

[0049] Optionally, the preset temperature may be 50°C to 75°C, such as 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, etc.

[0050] The drying device of this embodiment is provided with an external condenser 12 outside the air duct housing 16. When the drying temperature in the drying chamber 40 reaches the expected value, the external condenser 12 can exchange heat with the external environment and discharge excess heat to the external environment, thereby enabling the entire drying device to maintain a higher power without causing the drying temperature to be too high; and because the entire drying device maintains a higher power, the evaporator 14 has a higher dehumidification capacity, which can shorten the drying time of clothes, etc.

[0051] Optionally, the drying equipment of this embodiment also includes a first pipeline 21, a second pipeline 22, a third pipeline 23 and a fourth pipeline 24, one end of the first pipeline 21 is connected to the outlet of the compressor 11, and the other end of the first pipeline 21 is connected to the external condenser 12; one end of the second pipeline 22 is connected to the external condenser 12, and the other end of the second pipeline 22 is connected to the built-in condenser 13; one end of the third pipeline 23 is connected to the built-in condenser 13, and the other end of the third pipeline 23 is connected to the evaporator 14, and the throttling device 15 is arranged on the third pipeline 23; one end of the fourth pipeline 24 is connected to the evaporator 14, and the other end of the fourth pipeline 24 is connected to the inlet of the compressor 11.

[0052] In this embodiment, the first pipeline 21, the second pipeline 22, the third pipeline 23 and the fourth pipeline 24 are independently arranged to respectively realize the connection between the outlet of the compressor 11 and the external condenser 12, the connection between the external condenser 12 and the built-in condenser 13, the connection between the built-in condenser 13 and the evaporator 14, and the connection between the evaporator 14 and the inlet of the compressor 11. This not only allows the compressor 11, the external condenser 12, the built-in condenser 13 and the evaporator 14 to be provided with only two ports, thereby improving the reliability of these components, but also reduces the interference between the various pipelines, simplifies the pipeline structure, and improves the reliability of the drying equipment.

[0053] In one application scenario, in the initial working stage of the dryer, that is, the heating stage, the external condenser 12 can be prevented from exchanging heat with the external environment, or the amount of heat exchange can be very small and can be ignored; the high-temperature and high-pressure superheated refrigerant vapor output by the compressor 11 is all delivered to the external condenser 12 through the first pipeline 21. Since the external condenser 12 does not perform heat exchange, the high-temperature and high-pressure superheated refrigerant vapor will be all delivered to the built-in condenser 13 through the second pipeline 22. Therefore, the temperature in the drying room of the dryer is relatively low, which will cause the built-in condenser 13 to condense the high-temperature and high-pressure refrigerant vapor to form a high-pressure supercooled refrigerant. liquid and quickly provides heat to the drying chamber 40 of the dryer, so that the drying chamber 40 is heated up quickly, which can shorten the drying time; the third pipeline 23 converts the high-pressure supercooled liquid coming out of the built-in condenser 13 into low-temperature and low-pressure refrigerant vapor after throttling by the throttling device 15, and then transports it to the evaporator 14. The evaporator 14 absorbs the heat of the moist heat medium in the drying chamber, so that the low-temperature and low-pressure refrigerant vapor is converted into low-temperature and low-pressure refrigerant vapor. The low-temperature and low-pressure refrigerant vapor is transported to the compressor 11 through the fourth pipeline 24, and the water vapor in the moist heat medium in the drying chamber 40 is condensed into condensed water and discharged.

[0054] In one application scenario, when the drying temperature in the drying chamber 40 reaches a preset temperature, the clothes dryer enters a temperature stabilization stage, so that the external condenser 12 can effectively exchange heat with the external environment; the high-temperature and high-pressure refrigerant vapor output by the compressor 11 is all delivered to the external condenser 12 through the first pipeline 21. Since the external condenser 12 exchanges heat with the external environment, the high-pressure and high-temperature vapor provided by the compressor 11 is preliminarily condensed, and the heat generated by the preliminarily condensed is discharged to the outside. The high-temperature and high-pressure refrigerant vapor after the preliminarily condensation continues to be delivered to the internal condenser 13 through the second pipeline 22, so that the internal condenser 13 can After the initial condensation, the heat from the high-pressure, high-temperature steam is dissipated into the drying chamber 40, preventing the temperature inside the drying chamber 40 from becoming excessively high. The third pipeline 23 converts the high-pressure, subcooled liquid from the built-in condenser 13 into low-temperature, low-pressure refrigerant vapor after being throttled by the throttle element 15. The refrigerant vapor is then transported to the evaporator 14. The evaporator 14 absorbs heat from the moist heat medium in the drying chamber 40, converting the low-temperature, low-pressure refrigerant vapor into low-temperature, low-pressure refrigerant vapor. The low-temperature, low-pressure refrigerant vapor is then transported to the compressor 11 via the fourth pipeline 24, condensing the water vapor in the moist heat medium in the drying chamber 40 into condensed water for discharge. Furthermore, because the entire drying apparatus maintains a high power consumption, the evaporator 14 has a high dehumidification capacity, shortening the drying time of clothing and other items.

[0055] In another embodiment, Figure 2 As shown, Figure 2 This is a structural diagram of the second embodiment of the drying equipment of the present application. The drying equipment of this embodiment includes: a drying chamber 40 (see Figure 5-Figure 8 ), compressor 11, external condenser 12, internal condenser 13, evaporator 14, throttling element 15 and air duct housing 17 (see Figure 5-Figure 8 ), wherein the external condenser 12 is connected to the outlet of the compressor 11, the internal condenser 13 is connected to the external condenser 12, the evaporator 14 is connected to the internal condenser 13 and the inlet of the compressor 11 respectively, the throttle 15 is arranged between the internal condenser 13 and the evaporator 14, and the air duct housing 17 forms a heat exchange cavity connected to the drying chamber 40 (see Figure 5-Figure 8 ), the internal condenser 13 and evaporator 14 are disposed within the heat exchange chamber, while the external condenser 12 and compressor 11 are disposed outside the heat exchange chamber; the outlet of the compressor 11 is also connected to the internal condenser 13. The internal condenser 13 and evaporator 14 exchange heat with the interior environment of the drying chamber 40, while the external condenser 12 can exchange heat with the exterior environment of the drying chamber 40.

[0056] The drying equipment of this embodiment Figure 1 The difference between the drying equipment of the embodiment is that the outlet of the compressor 11 is further connected to the built-in condenser 13 .

[0057] Figure 1In the embodiment, the external condenser 12 and the built-in condenser 13 are arranged in series, that is, the high-temperature and high-pressure refrigerant vapor coming out of the compressor 11 enters the external condenser 12 and the built-in condenser 13 in sequence; and this embodiment further connects the outlet of the compressor 11 with the built-in condenser 13, which can realize the mixed setting of the external condenser 12 and the built-in condenser 13, that is, part of the high-temperature and high-pressure superheated refrigerant vapor coming out of the compressor 11 enters the external condenser 12 and the built-in condenser 13 in sequence, and part directly enters the built-in condenser 13.

[0058] This embodiment further connects the outlet of the compressor 11 to the built-in condenser 13, so that the high-temperature and high-pressure refrigerant vapor portion coming out of the compressor 11 directly enters the built-in condenser 13. During the heating stage of the dryer, the temperature in the drying chamber 40 can be rapidly increased, and during the temperature stabilization stage of the dryer (that is, after the temperature in the drying chamber reaches the preset temperature), the temperature of the drying chamber can be quickly maintained.

[0059] Optionally, the drying device of this embodiment further includes a first pipeline 21, a second pipeline 22, a third pipeline 23, a fourth pipeline 24, and a fifth pipeline 25, wherein the first pipeline 21 includes a first branch pipe 211 and a second branch pipe 212, and the second pipeline 22 includes a third branch pipe 221 and a fourth branch pipe 222; one end of the first branch pipe 211 is connected to the outlet of the compressor 11, and the other end of the first branch pipe 211 is connected to one end of the second branch pipe 212 and one end of the fifth pipeline 25; the external condenser 12 is respectively It is connected to the other end of the second branch pipe 212 and one end of the third branch pipe 221, and the other end of the third branch pipe 221 is respectively connected to the fourth branch pipe 222 and the other end of the fifth pipe 25; the built-in condenser 13 is respectively connected to the other end of the fourth branch pipe 222 and the third pipe 23, the other end of the third pipe 23 is connected to the evaporator 14, and the throttling device 15 is arranged on the third pipe 23; one end of the fourth pipe 24 is connected to the evaporator 14, and the other end of the fourth pipe 24 is connected to the inlet of the compressor 11.

[0060] Optionally, the drying equipment of this embodiment also includes a first interface part and a second interface part, and the first interface part and the second interface part are each provided with three ports; the three ports of the first interface part are respectively connected to the other end of the first branch pipe 211, the other end of the second branch pipe 212 and one end of the fifth pipeline 25, so as to connect and communicate the first branch pipe 211, the second branch pipe 212 and the fifth pipeline 25; the three ports of the second interface part are respectively connected to the other end of the third branch pipe 221, one end of the fourth branch pipe 222 and the other end of the fifth pipeline 25, so as to connect and communicate the third branch pipe 221, the fourth branch pipe 222 and the fifth pipeline 25.

[0061] Optionally, the first interface member and the second interface member may include a diverter valve. The controller of the drying device may switch whether the fifth pipeline 25 is conductive based on actual needs to achieve a series-parallel connection structure between the external condenser 12 and the internal condenser 13.

[0062] In another embodiment, if Figure 3 As shown, Figure 3 This is a structural diagram of the third embodiment of the drying device of the present application. The drying device of this embodiment includes: a drying chamber 40, a compressor 11, an external condenser 12, a built-in condenser 13, an evaporator 14, a throttling member 15 and an air duct housing 16 (see Figure 5-Figure 8 ), wherein the external condenser 12 is connected to the outlet of the compressor 11, the internal condenser 13 is connected to the external condenser 12, the evaporator 14 is connected to the internal condenser 13 and the inlet of the compressor 11 respectively, the throttle 15 is arranged between the internal condenser 13 and the evaporator 14, and the air duct housing 16 forms a heat exchange cavity connected to the drying chamber 40 (see Figure 5-Figure 8 ), the throttle member 15, the internal condenser 13, and the evaporator 14 are disposed within the heat exchange chamber, while the external condenser 12 and the compressor 11 are disposed outside the heat exchange chamber. The outlet of the compressor 11 is also connected to the internal condenser 13, and the external condenser 12 is also connected to the connection between the throttle member 15 and the internal condenser 13. The internal condenser 13 and the evaporator 14 exchange heat with the internal environment of the drying chamber, while the external condenser 12 can exchange heat with the external environment of the drying chamber 40.

[0063] The drying equipment of this embodiment Figure 2 The difference between the drying equipment of the embodiment is that the external condenser 12 is further connected to the connection point between the throttling element 15 and the internal condenser 13 .

[0064] This embodiment further connects the external condenser 12 and the throttling device 15 with the connection point of the built-in condenser 13, so that the external condenser 12 and the built-in condenser 13 can be set in parallel, that is, part of the high-temperature and high-pressure superheated refrigerant vapor coming out of the compressor 11 enters the external condenser 12 in sequence, and part enters the built-in condenser 13, while the high-pressure supercooled liquid from the external condenser 12 and the high-pressure supercooled liquid from the built-in condenser 13 are directly throttled by the throttling device 15 and then transported to the evaporator 14.

[0065] This embodiment further connects the external condenser 12 and the throttling element 15 with the connection point of the built-in condenser 13, which can reduce the interference between the external condenser 12 and the built-in condenser 13, and can simultaneously improve the condensation effect of the two, so that during the heating stage of the dryer, the temperature in the drying chamber can be quickly increased, and during the temperature stabilization stage of the dryer (that is, after the temperature in the drying chamber reaches the preset temperature), the temperature of the drying chamber can be quickly maintained; and the external condenser 12 can dissipate part of the heat in the high-temperature and high-pressure steam provided by the compressor 11, so that the temperature in the drying chamber will not be too high.

[0066] Optionally, the drying device of this embodiment further includes a first pipeline 21, a second pipeline 22, a fourth pipeline 24, a sixth pipeline 26, and a fifth pipeline 25, wherein the first pipeline 21 includes a first branch pipe 211 and a second branch pipe 212, and the second pipeline 22 includes a fifth branch pipe 231 and a sixth branch pipe 232; one end of the first branch pipe 211 is connected to the outlet of the compressor 11, and the other end of the first branch pipe 211 is connected to one end of the second branch pipe 212 and one end of the fifth pipeline 25; the external condenser 12 They are respectively connected to the other end of the second branch pipe 212 and one end of the fifth branch pipe 231, and the other end of the fifth branch pipe 231 is respectively connected to the sixth branch pipe 232 and one end of the sixth pipeline 26; the built-in condenser 13 is respectively connected to the other end of the sixth branch pipe 232 and the other end of the fifth pipeline 25, the evaporator 14 is respectively connected to one end of the fourth pipeline 24 and the other end of the sixth pipeline 26, and the throttling device 15 is arranged on the sixth pipeline 26, and the other end of the fourth pipeline 24 is connected to the inlet of the compressor 11.

[0067] Optionally, the drying equipment of this embodiment also includes a third interface member and a fourth interface member, and the third interface member and the fourth interface member are each provided with three ports; the three ports of the third interface member are respectively connected to the other end of the first branch pipe 211, the other end of the second branch pipe 212 and one end of the fifth pipeline 25, so as to connect and communicate the first branch pipe 211, the second branch pipe 212 and the fifth pipeline 25; the three ports of the fourth interface member are respectively connected to the other end of the fifth branch pipe 231, one end of the sixth branch pipe 232 and one end of the sixth pipeline 26, so as to connect and communicate the fifth branch pipe 231, the sixth branch pipe 232 and the sixth pipeline 26.

[0068] Optionally, the third interface member and the fourth interface member may include a diverter valve. The controller of the drying device may control the port conduction of the third interface member and / or the fourth interface member based on actual needs to realize a series-parallel connection structure between the external condenser 12 and the internal condenser 13.

[0069] In another embodiment, if Figure 4 As shown, Figure 4This is a structural diagram of the fourth embodiment of the drying device of the present application. The drying device of this embodiment includes: a drying chamber 40, a compressor 11, an external condenser 12, a built-in condenser 13, an evaporator 14, a throttling member 15 and an air duct housing 16 (see Figure 5-Figure 8 ), wherein the external condenser 12 is connected to the outlet of the compressor 11, the internal condenser 13 is connected to the external condenser 12, the evaporator 14 is connected to the internal condenser 13 and the inlet of the compressor 11 respectively, the throttle 15 is arranged between the internal condenser 13 and the evaporator 14, and the air duct housing 16 forms a heat exchange cavity connected to the drying chamber 40 (see Figure 5-Figure 8 ), the throttle member 15, the internal condenser 13, and the evaporator 14 are disposed within the heat exchange chamber, while the external condenser 12 and the compressor 11 are disposed outside the heat exchange chamber; the external condenser 12 is further connected to the connection between the throttle member 15 and the internal condenser 13. The internal condenser 13 and the evaporator 14 exchange heat with the internal environment of the drying chamber, while the external condenser 12 can exchange heat with the external environment of the drying chamber 40.

[0070] The drying equipment of this embodiment Figure 1 The difference between the drying equipment of the embodiment is that the external condenser 12 is further connected to the connection point between the throttling element 15 and the internal condenser 13 .

[0071] Optionally, the drying device of this embodiment further includes a fifth interface component, connecting the second pipeline 22 with the third pipeline 23 at a position before the throttling component 15 .

[0072] Optionally, the fifth interface component may include a diverter valve. The controller of the drying device may control the port conduction of the fifth interface component based on actual needs to achieve a series-parallel connection structure between the external condenser 12 and the internal condenser 13.

[0073] In another embodiment, if Figure 5 and Figure 6 As shown, Figure 5 This is a structural diagram of the fifth embodiment of the drying equipment of the present application; Figure 6 yes Figure 5Schematic diagram of the explosion structure of the drying equipment of the embodiment. The drying equipment of this embodiment includes: a drying chamber 40, a compressor 11, an external condenser 12, a built-in condenser 13, an evaporator 14, a throttling device, an air duct housing 16 and a first fan 17, wherein the external condenser 12 is connected to the outlet of the compressor 11, the built-in condenser 13 is connected to the external condenser 12, the evaporator 14 is connected to the built-in condenser 13 and the inlet of the compressor 11 respectively, the throttling device is arranged between the built-in condenser 13 and the evaporator 14, the air duct housing 16 forms a heat exchange cavity connected to the drying chamber 40, the built-in condenser 13 and the evaporator 14 are arranged in the heat exchange cavity, the external condenser 12 and the compressor 11 are arranged It is placed outside the heat exchange chamber; the built-in condenser 13 and the evaporator 14 exchange heat with the internal environment of the drying chamber 40, and the external condenser 12 can exchange heat with the external environment of the drying chamber 40; the first fan 17 is located outside the heat exchange chamber and is arranged close to the external condenser 12, and the external condenser 12 is located between the first fan 17 and the compressor 11; the operation stages of the drying equipment of this embodiment include a heating stage and a temperature stabilization stage, and the first fan 17 is controlled to stop working in the heating stage to promote heat exchange between the external condenser 12 and the external environment; the first fan 17 is controlled to work in the temperature stabilization stage to reduce heat exchange between the external condenser 12 and the external environment.

[0074] In this embodiment, a first fan 17 is arranged near the external condenser 12, and the heat exchange efficiency between the external condenser 12 and the external environment can be controlled by controlling the working state of the first fan 17, so as to improve the heat exchange efficiency of the external condenser 12 and thus improve the reliability of low-temperature drying; and the first fan 17 is arranged outside the air duct housing 16, which can reduce the impact of the operation of the first fan 17 on the temperature in the drying chamber 40; and the first fan 17 is arranged on the side of the external condenser 12 away from the compressor 11, which is convenient for the spatial layout among the three, and can reduce the impact of the first fan 17 on the compressor 11, and can enable the first fan 17 to form an air duct connecting the heat exchange space of the external condenser 12 with the external environment, thereby realizing heat exchange between the heat exchange space and the external environment, thereby realizing heat exchange between the external condenser 12 and the external space, thereby realizing the condensation effect of the external condenser 12.

[0075] The external condenser 12 is located at the air outlet side of the first fan 17 , and the air inlet side of the first fan 17 is in communication with the external environment of the drying device.

[0076] In other embodiments, the external condenser is located on the air inlet side of the first fan, and the air outlet side of the first fan is connected to the external environment of the drying equipment.

[0077] Optionally, the open end of the air duct housing 16 is sealed with the drying chamber 40 to improve the heat exchange efficiency between the heat exchange cavity formed by the air duct housing 16 and the drying chamber 40 .

[0078] In one application scenario, during the heating stage of the dryer, the first fan 17 is controlled not to work so that the external condenser 12 does not exchange heat with the external environment, or the heat exchange amount is very small and can be ignored; the high-temperature and high-pressure refrigerant vapor output by the compressor 11 is delivered to the external condenser 12. Since the external condenser 12 does not exchange heat, the high-temperature and high-pressure refrigerant vapor will be delivered to the built-in condenser 13 through the external condenser 12. At this time, the temperature in the drying chamber 40 of the dryer is relatively low, which will cause the built-in condenser 13 to condense the high-temperature and high-pressure refrigerant vapor to form a high-pressure The supercooled liquid quickly provides heat to the drying chamber 40 of the clothes dryer, causing the drying chamber 40 to heat up quickly, thereby shortening the drying time. The high-pressure supercooled liquid coming out of the built-in condenser 13 is throttled by the throttle member 15 and becomes low-temperature, low-pressure refrigerant vapor. The refrigerant vapor is then transported to the evaporator 14. The evaporator 14 absorbs heat from the moist heat medium in the drying chamber 40, converting the low-temperature, low-pressure refrigerant vapor into low-temperature, low-pressure refrigerant vapor. The low-temperature, low-pressure refrigerant vapor is then transported to the compressor 11, causing the water vapor in the moist heat medium in the drying chamber 40 to be condensed into condensed water and discharged. Because the high-temperature, high-pressure superheated refrigerant vapor output by the compressor 11 is heat-exchanged through the built-in condenser 13, the efficiency of heating the drying chamber 40 can be improved, shortening the drying time in the initial working stage.

[0079] In one application scenario, when the drying temperature in the drying chamber 40 reaches a preset temperature, the clothes dryer enters a temperature stabilization stage, and controls the first fan 17 to work, so as to promote the heat exchange between the external condenser 12 and the external environment; the high-temperature and high-pressure refrigerant vapor output by the compressor 11 is delivered to the external condenser 12, and because the external condenser 12 exchanges heat with the external environment, the high-pressure and high-temperature steam provided by the compressor 11 is preliminarily condensed, and the heat generated by the preliminarily condensed is discharged to the outside, and the high-temperature and high-pressure superheated refrigerant vapor after the preliminarily condensation is delivered to the internal condenser 13, so that the internal condenser 1 3. The heat from the initially condensed, high-temperature, high-pressure, superheated refrigerant vapor is dissipated into the drying chamber 40, thereby preventing the temperature in the drying chamber 40 from becoming excessively high. The high-pressure supercooled liquid exiting the internal condenser 13 is throttled by the throttle element 15 and converted into low-temperature, low-pressure refrigerant vapor. This is then transferred to the evaporator 14, which absorbs heat from the moist heat medium in the drying chamber 40, converting the low-temperature, low-pressure refrigerant vapor into low-temperature, low-pressure refrigerant vapor. This low-temperature, low-pressure refrigerant vapor is then transferred to the compressor 11, condensing the water vapor in the moist heat medium in the drying chamber 40 into condensed water for discharge. Because the external condenser 12 dissipates some of the heat from the high-temperature, high-pressure, superheated refrigerant vapor output from the compressor 11 to the external environment, the temperature in the drying chamber 40 is prevented from becoming excessively high. Furthermore, because the entire drying apparatus maintains a high power output, the evaporator 14 has a high dehumidification capacity, shortening the drying time for clothing, etc.

[0080] Optionally, the built-in condenser 13 and the evaporator 14 of this embodiment are arranged along the first horizontal direction X in the heat exchange cavity.

[0081] In this embodiment, the built-in condenser 13 and the evaporator 14 are arranged in a horizontal direction. Even if the two are located on the same horizontal plane, their layout can be optimized, the structure of the heat exchange cavity and the refrigerant flow channel where the two are located can be simplified, and costs can be saved and working reliability can be improved.

[0082] The air duct housing 16 also forms an installation area that is isolated from the heat exchange cavity and located outside the heat exchange cavity. The first fan 17, the external condenser 12, and the compressor 11 are arranged in the installation area along the first horizontal direction X, and the heat exchange cavity and the installation area are arranged along the second horizontal direction Y, which is perpendicular to the first horizontal direction X.

[0083] The row where the built-in condenser 13 and the evaporator 14 are located and the row where the external condenser 12 , the compressor 11 and the first fan 17 are located are arranged along the second horizontal direction Y.

[0084] In this embodiment, the row where the built-in condenser 13 and the evaporator 14 are located and the row where the external condenser 12, the compressor 11 and the first fan 17 are located are arranged along the second horizontal direction Y perpendicular to the first horizontal direction X. This can optimize the structural layout so that the arrangement structure of the above components is not too large in the first horizontal direction X or the second horizontal direction Y, and can better match the size of the drying chamber 40, thereby simplifying the process and saving costs.

[0085] In other embodiments, the arrangement of the internal condenser and evaporator may form a certain angle with the horizontal plane, for example, the angle is also less than or equal to 10°. And / or the arrangement of the external condenser, compressor, and first fan may form a certain angle with the horizontal plane, non-perpendicular to the arrangement of the internal condenser and evaporator. Specific adjustments can be made based on specific needs.

[0086] Optionally, the heat exchange chamber of the air duct housing 16 of this embodiment includes a first sub-chamber 161 and a second sub-chamber 162 arranged and connected along the first horizontal direction X, the evaporator 14 is arranged in the second sub-chamber 162, and the built-in condenser 13 is arranged in the first sub-chamber 161. The side wall of the first sub-chamber 161 facing away from the second sub-chamber 162 is provided with a ventilation hole, and the ventilation hole is connected to the drying chamber 40; an installation area is also formed on the air duct housing 16, which is located outside the heat exchange chamber and is isolated from the heat exchange chamber. The installation area is arranged along the second horizontal direction Y with the heat exchange chamber, and the compressor 11, the external condenser 12 and the first fan 17 are arranged on the installation area along the first horizontal direction X.

[0087] In this embodiment, the compressor 11, the external condenser 12, the first fan 17, the internal condenser 13, and the evaporator 14 are integrated in the air duct housing 16, which can optimize the structural layout, improve the structural stability, and reduce the structural volume.

[0088] Optionally, the blowing direction of the first fan 17 is arranged parallel to the first horizontal direction X, and at least the air outlet of the first fan 17 is connected to the external environment.

[0089] Optionally, the air duct housing 16 can form an installation cavity on the installation area, and the compressor 11 and the external condenser 12 are both arranged in the installation cavity. The side wall of the installation cavity close to the external condenser 12 and facing away from the external compressor 11 is provided with an air outlet connected to the external environment and the installation cavity; the first fan 17 is arranged outside the installation cavity, and its air outlet is connected to the air outlet of the installation cavity.

[0090] In other embodiments, the air duct housing can form an installation cavity on the installation area, and the compressor, external condenser and first fan are all arranged in the installation cavity. The side wall of the installation cavity close to the first fan facing away from the external condenser is provided with an air outlet connected to the external environment and the installation cavity.

[0091] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0092] Optionally, the heat exchange cavity is provided with an air outlet connected to the drying chamber 40 and an air inlet arranged opposite to the air outlet; the distance between the external condenser 12 and the air inlet is smaller than the distance between the external condenser 12 and the air outlet.

[0093] Through the above method, the probability of the external condenser 12 dissipating heat to the air outlet, that is, the air inlet of the drying chamber 40, can be reduced, thereby reducing the risk of excessive temperature in the drying chamber 40; and the probability of the external condenser 12 dissipating heat to the air inlet can be increased, thereby preheating the air entering the heat exchange chamber, increasing the heat of the heat exchange chamber, and improving the heat exchange efficiency.

[0094] In another embodiment, the drying equipment of this embodiment also includes: a temperature sensor and a controller, the temperature sensor is used to obtain the temperature in the drying chamber; the controller is respectively connected to the first fan and the temperature sensor, the controller determines the operating stage of the drying equipment based on the temperature, and controls the first fan not to work in the heating stage and to work in the temperature stabilization stage.

[0095] The dryer starts working and enters the heating stage, and the first fan does not start working; the temperature sensor obtains the real-time temperature in the drying chamber in real time during the entire working stage of the dryer, and uploads the real-time temperature to the controller; the controller compares the real-time temperature with the preset temperature. In response to the real-time temperature being greater than or equal to the preset temperature, the controller determines that the dryer switches from the heating stage to the temperature stabilization stage. At this time, the controller controls the first fan to work so that the external condenser dissipates heat to the outside, so that the temperature in the drying chamber will not be too high, and the power of the entire drying equipment can be used, so that the evaporator evaporates quickly and the drying time is shortened.

[0096] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0097] Optionally, the drying equipment of this embodiment further includes: a partition 20, which is arranged between the evaporator 14 and the bottom wall of the heat exchange chamber, and a water accumulation portion or drainage hole is also provided on the bottom wall, and the water accumulation portion or drainage hole is located on the side of the partition 20 away from the evaporator 14.

[0098] The partition plate 20 may be disposed directly below or laterally below the evaporator 14 .

[0099] When the evaporator 14 is working, the low-temperature and low-pressure refrigerant wet vapor boils under isobaric conditions in the evaporator 14, absorbs the heat of the wet and hot medium in the drying chamber 40, and turns into low-temperature and low-pressure refrigerant vapor. The water vapor in the wet and hot medium is condensed and adheres to the outer surface of the evaporator 14. The condensed water is discharged out of the dryer through the water accumulation part or drainage hole on the bottom wall or is recycled by the dryer.

[0100] In this embodiment, the evaporator 14 is separated from the bottom wall of the heat exchange chamber by the partition 20 , which can facilitate the discharge of condensed water and reduce the impact of condensed water on the evaporator 14 .

[0101] Optionally, a water retaining strip is provided on the bottom wall of the heat exchange chamber to separate and connect the first sub-chamber 161 and the second sub-chamber 162 , thereby reducing the impact of condensed water on the built-in condenser 13 .

[0102] Optionally, the drying equipment of this embodiment also includes an air duct mechanism 31 and a second fan 30. The air duct mechanism 31 is arranged at the connection between the heat exchange chamber and the drying chamber 40, and the air duct of the air duct mechanism 31 is respectively connected to the heat exchange chamber and the drying chamber 40; the second fan 30 is arranged in the air duct.

[0103] This embodiment utilizes the air duct of the air duct mechanism 31 to achieve communication between the heat exchange chamber and the drying chamber 40, thereby adjusting the temperature and humidity of the air in the drying chamber 40, thereby achieving a drying effect on clothes, etc. This embodiment utilizes the second fan 30 in the air duct to accelerate the air flow rate between the heat exchange chamber and the drying chamber 40, thereby improving drying efficiency.

[0104] Optionally, the air duct mechanism 31 of this embodiment forms a spiral air duct, which can improve the air guiding efficiency. The air duct mechanism 31 is a volute in which the second fan 30 is arranged.

[0105] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0106] Of course, in other embodiments, such as Figure 7 and Figure 8 As mentioned above, the air duct mechanism 31 can also be provided with a disc-shaped air duct. 。 The air duct mechanism 31 is a disc-shaped housing in which the second fan 30 is installed.

[0107] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0108] Optionally, the power range of the compressor in the embodiment of the present application is 250W to 2300W, which can maintain the drying power of the drying equipment and shorten the drying time; and the power range of the compressor is wider, which can improve the flexibility of drying options.

[0109] Optionally, the power range of the compressor is 300W to 2200W, for example, 300W, 400W, 500W, 600W, 700W, 800W, 900W, 1000W, 1100W, 1200W, 1300W, 1400W, 1500W, 1600W, 1700W, 1800W, 1900W, 2000W, 2100W, 2200W, etc. For example, when the user selects the quick drying mode, the maximum power of the compressor can operate at 2200W.

[0110] Optionally, the temperature range in the drying chamber in the embodiment of the present application is 45°C to 80°C, which can achieve low-temperature drying and improve the problem of damage to clothes caused by high-temperature drying.

[0111] Optionally, the temperature range may be 50°C to 75°C, such as 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, etc.

[0112] In another embodiment, the drying equipment also includes a heating element, which is arranged in a drying chamber corresponding to the drying equipment. The operation stages of the drying equipment include a heating stage and a temperature stabilization stage. The heating element works in the heating stage to quickly increase the temperature in the drying chamber and shorten the drying time; the heating element stops working in the temperature stabilization stage to avoid the temperature in the drying chamber being too high.

[0113] Of course, the heating element can also be arranged in the heat exchange cavity of the air duct housing for accommodating the condenser and the evaporator.

[0114] The heating element is also connected to the controller of the drying equipment. The controller controls the heating element to work in the temperature rising stage and stop working in the temperature stabilizing stage.

[0115] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A drying device, characterized in that: The drying equipment comprises: A drying chamber, used for accommodating objects to be dried; An air duct housing connected to the drying chamber; a heat pump unit connected to the air duct housing and having a refrigerant circulation channel; an external condenser connected to the air duct housing, capable of exchanging heat with the external environment of the drying chamber, and connected to the refrigerant circulation channel; The operation phase of the drying equipment includes a temperature stabilization phase, during which the external condenser is controlled to operate.

2. The drying equipment according to claim 1, characterized in that The air duct housing also forms a heat exchange cavity connected to the drying chamber. The heat pump unit includes a compressor, a built-in condenser and an evaporator. The built-in condenser and the evaporator are arranged in the heat exchange cavity, and the external condenser and the compressor are arranged outside the heat exchange cavity.

3. The drying equipment according to claim 2, characterized in that: The operation phase includes a temperature rising phase, and the drying equipment further includes: a first fan, disposed outside the heat exchange chamber, wherein the external condenser is located between the first fan and the compressor; The first fan is controlled to stop working during the temperature rising stage to promote heat exchange between the external condenser and the external environment; the first fan is controlled to work during the temperature stabilizing stage to reduce heat exchange between the external condenser and the external environment.

4. The drying equipment according to claim 1, characterized in that The built-in condenser is connected to the external condenser, and the evaporator is connected to the built-in condenser and the inlet of the compressor respectively; the heat pump unit also includes: A throttling member is arranged between the built-in condenser and the evaporator.

5. The drying equipment according to claim 4, characterized in that: The outlet of the compressor is also connected to the built-in condenser.

6. The drying equipment according to claim 4 or 5, characterized in that: The external condenser is also connected to the connection point between the throttling element and the built-in condenser.

7. The drying equipment according to claim 3, characterized in that: The built-in condenser and the evaporator are arranged in the heat exchange cavity along a first horizontal direction.

8. The drying equipment according to claim 2, characterized in that: The drying equipment also includes: The partition is arranged between the evaporator and the bottom wall of the heat exchange chamber, and the bottom wall is also provided with a water accumulation part or a drainage hole.

9. The drying equipment according to claim 2, characterized in that: The drying equipment also includes: An air duct mechanism is provided at the connection between the heat exchange chamber and the drying chamber, and its air duct is communicated with the heat exchange chamber and the drying chamber respectively; The second fan is arranged in the air duct.

10. The drying equipment according to claim 2, characterized in that: The heat exchange chamber is provided with an air outlet communicating with the drying chamber and an air inlet arranged opposite to the air outlet; The distance between the external evaporator and the air inlet is smaller than the distance between the external evaporator and the air outlet.

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