Drying equipment

Abstract

The utility model provides drying equipment. The drying equipment comprises a drying chamber; 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 technical field of drying, and in particular to a drying device. Background Art

[0002] As people's living standards continue to improve, washing machines with only washing functions can no longer meet people's requirements. People require that clothes can also be dried after washing or that additional drying equipment be equipped to dry clothes. Drying modes generally include: electric heating water condensation drying system, electric heating air condensation drying system, and heat pump heating drying system with evaporator condensation combined with condenser heating. Compared with the first two drying modes, using heat pumps for drying is relatively energy-saving and has broad market application prospects.

[0003] In the related art, the drying time of drying equipment using heat pumps is relatively long, and how to shorten the drying time is the research focus in this field. For example, the characteristic of heat pump dryers is low-temperature drying. Too high a temperature will damage the clothes. In order to maintain the temperature of the clothes to be dried in the drum at a low temperature, the power of the heat pump system is limited, resulting in a longer drying time. Utility Model Content

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

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is to provide a drying device. The drying device includes: a drying chamber; 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 heat exchange with the external environment of the drying chamber, and connected to the refrigerant circulation channel; the operation stage of the drying device includes a temperature stabilization stage, and in the temperature stabilization stage, the external condenser is controlled to work.

[0006] Among them, 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] Among them, the operation stage also 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 the heat exchange between the external condenser and the external environment.

[0008] Wherein, the built-in condenser is connected to the external condenser, and the evaporator is respectively connected to the built-in condenser and the inlet of the compressor; the heat pump unit also 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 internal 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 also provided with a water accumulation part 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 communicated with the drying chamber and an air inlet arranged opposite to the air outlet; the distance between the external condenser and the air inlet is smaller than the distance between the external condenser and the air outlet.

[0015] The beneficial effects of the present application are as follows: the drying device 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 temperature stabilization stage, the external condenser performs heat exchange with the external environment, and the excess heat is discharged to the external environment, thereby enabling the entire drying device 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 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 drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

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

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

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

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

[0021] Figure 5 It is a structural schematic 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 of the embodiment;

[0023] Figure 7 It is a structural schematic diagram of a part of the structure of the sixth embodiment of the drying device of the present application;

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

[0025] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used 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 technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not 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 clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

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

[0033] In the related art, the drying time of clothes dryers is generally long, reaching more than 100 minutes. How to shorten the drying time is the focus of research 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] To this end, the present application proposes a drying device such as Figure 1 As shown, Figure 1 Schematic diagram of the structure of the first 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 );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, 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 temperature stabilization stage, and in the temperature stabilization 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 in 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 can 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 chamber 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 chamber.

[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 give it to the condenser group; the condenser group (including the external condenser 12 and the internal 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, 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, and enters the evaporator 14 for evaporation; the low-temperature and low-pressure refrigerant wet vapor throttled 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 have effective heat exchange with the external environment, so that it becomes an effective condenser; controlling the external condenser 12 to partially work means to make the heat exchange between the external condenser 12 and the external environment negligible, making it an invalid condenser.

[0045] Among them, 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 a 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 a set temperature or within a 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, and 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, for example, 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 shell 16. When the drying temperature in the drying chamber 40 reaches the expected value, the external condenser 12 can perform heat exchange with the external environment and discharge excess heat to the external environment, so that the entire drying device can 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 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 outlet of the compressor 11 is connected to the external condenser 12, the external condenser 12 is connected to the internal condenser 13, the internal condenser 13 is connected to the evaporator 14, and the evaporator 14 is connected to the inlet of the compressor 11 through the first pipeline 21, the second pipeline 22, the third pipeline 23 and the fourth pipeline 24 which are independently arranged. This not only allows the compressor 11, the external condenser 12, the internal 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 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 performing heat exchange 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 completely transported to the external condenser 12 through the first pipeline 21. Because the external condenser 12 does not perform heat exchange, the high-temperature and high-pressure superheated refrigerant vapor will be completely transported 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 vapor. liquid, and quickly provides heat to the drying chamber 40 of the dryer, so that the drying chamber 40 is quickly heated up, 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 transmitted 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 fully 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 The heat in the high-pressure and high-temperature steam after preliminary condensation is dissipated into the drying chamber 40, so that the temperature in the drying chamber 40 will not be too high; 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 and hot medium in the drying chamber 40, so that the low-temperature and low-pressure refrigerant vapor becomes low-temperature and low-pressure refrigerant vapor. The low-temperature and low-pressure refrigerant vapor is transmitted to the compressor 11 through the fourth pipeline 24, and the water vapor in the moist and hot medium in the drying chamber 40 is condensed into condensed water and discharged. And because the entire drying equipment maintains a high power, the evaporator 14 has a high dehumidification capacity, which can shorten the drying time of clothes, etc.

[0055] In another embodiment, if Figure 2 As shown, Figure 2 Schematic diagram of the structure of the second embodiment of the drying device of the present application. The drying device 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 throttling member 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 the evaporator 14 are arranged in the heat exchange chamber, and the external condenser 12 and the compressor 11 are arranged outside the heat exchange chamber; the outlet of the compressor 11 is also connected to the internal condenser 13. The internal 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.

[0056] The drying equipment of this embodiment Figure 1 The difference between the drying device of the embodiment is that the outlet of the compressor 11 is also 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, so as to 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 (i.e., after the temperature in the drying chamber reaches the preset temperature), the temperature of the drying chamber can be rapidly 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 respectively 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 pipeline 25; the built-in condenser 13 is respectively connected to the other end of the fourth branch pipe 222 and the third pipeline 23, 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.

[0060] Optionally, the drying equipment of this embodiment also includes a first interface member and a second interface member, and the first interface member and the second interface member are each provided with three ports; the three ports of the first 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 second interface member 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 connected 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 Schematic diagram of the structure 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 device 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 throttling member 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 throttling element 15, the built-in condenser 13, and the evaporator 14 are arranged in the heat exchange chamber, and the external condenser 12 and the compressor 11 are arranged outside the heat exchange chamber; the outlet of the compressor 11 is also connected to the built-in condenser 13, and the external condenser 12 is also connected to the connection between the throttling element 15 and the built-in condenser 13. The built-in condenser 13 and the evaporator 14 perform heat exchange with the internal environment of the drying chamber, and the external condenser 12 can perform heat exchange with the external environment of the drying chamber 40.

[0063] The drying equipment of this embodiment Figure 2 The difference between the drying device of the embodiment is that the external condenser 12 is also 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 internal condenser 13, so that the external condenser 12 and the internal condenser 13 can be set in parallel, that is, the high-temperature and high-pressure superheated refrigerant vapor coming out of the compressor 11 partially enters the external condenser 12 in sequence, and partially enters the internal condenser 13, while the high-pressure supercooled liquid from the external condenser 12 and the high-pressure supercooled liquid from the internal condenser 13 are directly transported to the evaporator 14 after throttling by the throttling device 15.

[0065] This embodiment further connects the external condenser 12 and the throttling device 15 with the connection point of the internal condenser 13, which can reduce the interference between the external condenser 12 and the internal condenser 13 and improve the condensation effect of the two at the same time, so that in the heating stage of the dryer, the temperature in the drying room can be quickly increased, and in the temperature stabilization stage of the dryer (that is, after the temperature in the drying room reaches the preset temperature), the temperature of the drying room 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 room 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 respectively 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 and the fourth interface may include a diverter valve. The controller of the drying device may control the port conduction of the third interface and / or the fourth interface based on actual needs to realize the series-parallel connection structure between the external condenser 12 and the internal condenser 13.

[0069] In another embodiment, if Figure 4 As shown, Figure 4Schematic diagram of the structure 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 device 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 throttling member 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 throttling element 15, the built-in condenser 13, and the evaporator 14 are arranged in the heat exchange chamber, and the external condenser 12 and the compressor 11 are arranged outside the heat exchange chamber; the external condenser 12 is also connected to the connection between the throttling element 15 and the built-in condenser 13. The built-in condenser 13 and the evaporator 14 exchange heat with the internal environment of the drying chamber, and 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 device of the embodiment is that the external condenser 12 is also 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, which connects 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 It is a structural schematic diagram of the fifth embodiment of the drying equipment of the present application; Figure 6 yes Figure 5Schematic diagram of the exploded structure of the drying equipment of the embodiment. The drying equipment of the present embodiment comprises: 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 respectively connected to the inlet of the built-in condenser 13 and the compressor 11, 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 located outside the heat exchange chamber; the built-in condenser 13 and the evaporator 14 perform heat exchange with the internal environment of the drying chamber 40, and the external condenser 12 can perform heat exchange 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 the 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 the 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, so as to reduce the influence of the operation of the first fan 17 on the temperature in the drying chamber 40 and the like; and the first fan 17 is arranged on the side of the external condenser 12 away from the compressor 11, so as to facilitate the spatial layout among the three, reduce the influence of the first fan 17 on the compressor 11, and enable the first fan 17 to form an air duct connecting the heat exchange space of the external condenser 12 with the external environment, so as to realize the heat exchange between the heat exchange space and the external environment, thereby realizing the 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 connected to 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 device.

[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 amount of heat exchange 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 is quickly supplied to the drying chamber 40 of the clothes dryer, so that the drying chamber 40 is quickly heated up, which can shorten the drying time. The high-pressure supercooled liquid coming out of the built-in condenser 13 is throttled by the throttling device 15 and becomes low-temperature and low-pressure refrigerant vapor, and then is transported to the evaporator 14. The evaporator 14 absorbs the heat of the moist and hot medium in the drying chamber 40, so that the low-temperature and low-pressure refrigerant vapor becomes low-temperature and low-pressure refrigerant vapor. The low-temperature and low-pressure refrigerant vapor is transmitted to the compressor 11, and the water vapor in the moist and hot medium in the drying chamber 40 is condensed into condensed water and discharged. Since the high-temperature and high-pressure superheated refrigerant vapor output by the compressor 11 is heat-exchanged through the built-in condenser 13, the efficiency of heating up the drying chamber 40 can be improved, and the drying time in the initial working stage can be shortened.

[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 performs heat exchange 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, 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 of the high-temperature, high-pressure, superheated refrigerant vapor after preliminary condensation is dissipated into the drying chamber 40, so that the temperature in the drying chamber 40 will not be too high; the high-pressure supercooled liquid coming out of the built-in condenser 13 is throttled by the throttling device 15 to become low-temperature, low-pressure refrigerant vapor, and then transported to the evaporator 14. The evaporator 14 absorbs the heat of the moist and hot medium in the drying chamber 40, so that the low-temperature, low-pressure refrigerant vapor becomes low-temperature, low-pressure refrigerant vapor, and the low-temperature, low-pressure refrigerant vapor is transported to the compressor 11, and the water vapor in the moist and hot medium in the drying chamber 40 is condensed into condensed water and discharged. Because the external condenser 12 dissipates part of the heat in the high-temperature, high-pressure, superheated refrigerant vapor output from the compressor 11 to the external environment, the temperature in the drying chamber 40 will not be too high; and because the entire drying equipment maintains a high power, the evaporator 14 has a high dehumidification capacity, which can shorten the drying time of clothes, 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 the 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, the cost can be saved and the working reliability can be improved.

[0082] The air duct housing 16 also forms an installation area which 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, and the second horizontal direction Y 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, which can optimize the structural layout so that the arrangement structure of the above components will not be too large in the first horizontal direction X or the second horizontal direction Y, and can be more matched with the size of the drying chamber 40, thereby simplifying the process and saving costs.

[0085] In other embodiments, the arrangement direction of the built-in condenser and the 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 direction of the external condenser, the compressor and the first fan may form a certain angle with the horizontal plane, and be non-vertical to the arrangement direction of the built-in condenser and the evaporator, which may be adaptively adjusted according to specific needs.

[0086] Optionally, the heat exchange chamber of the air duct shell 16 of the present 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, the built-in condenser 13 is arranged in the first sub-chamber 161, and 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 shell 16, which is located outside the heat exchange chamber and is isolated from the heat exchange chamber. The installation area is arranged with the heat exchange chamber along the second horizontal direction Y, 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 shell 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, and the side wall of the installation cavity close to the external condenser 12 and 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 shell 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 overheating of 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 room 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, and 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 room 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 a drainage hole is also provided on the bottom wall, and the water accumulation portion or the 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 to the side of 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 humid heat medium in the drying chamber 40, and turns into low-temperature and low-pressure refrigerant vapor. The water vapor in the humid heat 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 influence 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] In this embodiment, the air duct of the air duct mechanism 31 is used to achieve communication between the heat exchange chamber and the drying chamber 40, and the temperature and humidity of the air in the drying chamber 40 can be adjusted, thereby achieving a drying effect on clothes, etc. In this embodiment, the second fan 30 in the air duct can accelerate the air flow speed between the heat exchange chamber and the drying chamber 40, thereby improving the 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 provided.

[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, such as 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 run 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, for example, 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 excessive temperature in the drying chamber.

[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 a controller of the drying equipment, and the controller controls the heating element to work in the heating stage and stop working in the temperature stabilization stage.

[0115] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used 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: Drying room; An air duct housing connected to the drying chamber; A heat pump unit is connected to the air duct housing and has a refrigerant circulation channel; An external condenser is connected to the air duct housing, capable of heat exchange with the external environment of the drying chamber, and is connected to the refrigerant circulation channel; The operation stage of the drying equipment includes a temperature stabilization stage, during which the external condenser is controlled to operate; The air duct housing is further formed with a heat exchange cavity connected to the drying chamber, and the heat pump unit includes a compressor, a built-in condenser and an evaporator, and the built-in condenser and the evaporator are arranged in the heat exchange cavity; The drying device 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 also provided with a water accumulation part or a drainage hole.

2. The drying device according to claim 1, characterized in that: The external condenser and the compressor are arranged outside the heat exchange cavity.

3. The drying device according to claim 2, characterized in that: The operation stage includes a heating stage, and the drying equipment further includes: A first fan 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 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 device 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 device according to claim 4, characterized in that: The outlet of the compressor is also connected to the built-in condenser.

6. The drying device 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 internal condenser.

7. The drying device 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 device according to claim 2, characterized in that: The drying equipment also includes: An air duct mechanism is arranged 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.

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

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