Drying device

Abstract

A drying device, comprising: a drying chamber (40), used for accommodating an object to be dried; an air duct housing (16), communicated with the drying chamber (40); a heat pump unit (01), connected to the air duct housing (16) and having a refrigerant circulation channel; a dynamic heat exchange assembly (03), comprising a dynamic heat exchanger (12), connected to the air duct housing (16), and capable of exchanging heat with an external environment of the drying chamber (40); and a switch assembly (02), connected to the air duct housing (16), wherein a refrigerant interface of the dynamic heat exchanger (12) and the switch assembly (02) are both connected to the refrigerant circulation channel, and the switch assembly (02) is used for switching a circulation path of a refrigerant in the heat pump unit (01) and the dynamic heat exchanger (12) so as to switch an operation mode of the dynamic heat exchanger (12). The operation stage of the drying device includes a heating stage and a temperature stabilizing stage; in the heating stage, the switch assembly (02) is controlled to switch the dynamic heat exchanger (12) to an evaporation mode; in the temperature stabilization stage, the switch assembly (02) is controlled to switch the dynamic heat exchanger (12) to a condensation mode. The drying device can implement low-temperature drying and shorten the drying duration.

Description

Drying equipment

[0001] This application claims priority to Chinese patent application No. 2024101867347, filed on February 19, 2024, entitled “Drying Equipment”, which is incorporated herein by reference in its entirety.

Technical field

[0002] The present application relates to the field of drying technology, and in particular to a drying device. [Background Technology]

[0003] 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.

[0004] In the related art, drying equipment using heat pumps for drying has a long drying time. Shortening this time is a key research topic in this field. The slow temperature rise in the drying chamber contributes to the long drying time. To address this, the related art addresses the issue of long drying times by adding new heat sources (such as electric auxiliary heating) or increasing the power of the heat pump system. However, both electric auxiliary heating and increased power can lead to excessively high temperatures in the drying chamber, which can damage the items being dried. [Summary of the invention]

[0005] The present application provides a drying device to shorten the drying time and achieve low-temperature drying.

[0006] To solve the above technical problems, the present application adopts a technical solution: providing a drying device. The drying device includes: a drying chamber 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; a dynamic heat exchange component including a dynamic heat exchanger connected to the air duct housing and capable of heat exchange with the external environment of the drying chamber; a switch component connected to the air duct housing, wherein the refrigerant interface of the dynamic heat exchanger and the switch component are both connected to the refrigerant circulation channel, and the switch component is used to switch the flow path of the refrigerant in the heat pump unit and the dynamic heat exchanger to switch the operating mode of the dynamic heat exchanger; wherein the operating stages of the drying device include a heating stage and a temperature stabilization stage, and the operating modes include an evaporation mode and a condensation mode; in the heating stage, the switch component is controlled to switch the dynamic heat exchanger to the evaporation mode; in the temperature stabilization stage, the switch component is controlled to switch the dynamic heat exchanger to the condensation mode.

[0007] Among them, the air duct shell also forms a heat exchange cavity connected to the drying chamber. The heat pump unit includes a compressor, a condenser and an evaporator. The condenser and the evaporator are arranged in the heat exchange cavity, and the dynamic heat exchanger and the compressor are arranged outside the heat exchange cavity.

[0008] Among them, the dynamic heat exchange component also includes: a first fan, which is arranged outside the heat exchange chamber and close to the dynamic heat exchanger, and the dynamic heat exchanger is located between the first fan and the compressor; wherein, the first fan is controlled to work to promote heat exchange between the dynamic heat exchanger and the external environment; the first fan is controlled to stop working to reduce heat exchange between the dynamic heat exchanger and the external environment.

[0009] Among them, the heat pump unit also includes: a throttling component. In the evaporation mode, the switch component is switched to input the refrigerant output from the condenser into the dynamic heat exchanger after the throttling action of the throttling component; in the condensing mode, the switch component is switched to input the refrigerant output from the dynamic heat exchanger into the evaporator after the throttling action of the throttling component.

[0010] Among them, the throttling component includes: a first throttling device, the condenser is connected to the outlet of the compressor and the switch component, the evaporator is connected to the switch component and the inlet of the compressor respectively, the first throttling device is arranged between the switch component and the dynamic heat exchanger, and the control switch component selectively sets the first throttling device between the dynamic heat exchanger and the condenser, or between the dynamic heat exchanger and the evaporator.

[0011] Among them, the switch assembly includes a first switching valve, the main valve port of the first switching valve is connected to the condenser, the first branch valve port of the first switching valve is connected to the first throttling device, the second branch valve port of the first switching valve is connected to the evaporator, and the third branch valve port of the first switching valve is connected to the dynamic heat exchanger.

[0012] Among them, the throttling component includes: a first one-way valve, which is respectively connected to the switch component and the condenser, and its conduction direction is from the switch component to the condenser; a second throttling device, which is respectively connected to the switch component and the condenser; a second one-way valve, which is respectively connected to the condenser and the dynamic heat exchanger, and its conduction direction is from the dynamic heat exchanger to the condenser; a third throttling device, which is respectively connected to the condenser and the dynamic heat exchanger.

[0013] Among them, the switch assembly includes a second switching valve, the main valve port of the second switching valve is connected to the compressor, the first sub-valve port of the second switching valve is connected to the first one-way valve and the second throttling device, the second sub-valve port of the second switching valve is connected to the evaporator, and the third sub-valve port of the second switching valve is connected to the dynamic heat exchanger.

[0014] Among them, the drying equipment also includes: a first switch, which is arranged on the connecting pipeline between the dynamic heat exchanger and the inlet of the compressor; in the evaporation mode, the first switch connects the dynamic heat exchanger with the inlet of the compressor; in the condensation mode, the first switch disconnects the dynamic heat exchanger from the inlet of the compressor.

[0015] The drying equipment further comprises: a fourth throttling element, which is arranged between the condenser and the evaporator.

[0016] Among them, the drying equipment also includes: a second switch, which is arranged on the connecting pipeline between the dynamic heat exchanger and the evaporator; in the evaporation mode, the second switch connects the dynamic heat exchanger with the evaporator; in the condensation mode, the second switch disconnects the dynamic heat exchanger from the evaporator.

[0017] The drying device further includes: a third switch for selectively connecting the condenser to the outlet of the compressor.

[0018] The condenser and the evaporator are arranged in the heat exchange cavity along a first horizontal direction.

[0019] 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 dynamic heat exchanger and the air inlet is smaller than the distance between the dynamic heat exchanger and the air outlet.

[0020] The drying device further comprises: a partition plate, which is arranged between the evaporator 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.

[0021] The beneficial effects of the present application are as follows: the drying equipment of the present application is provided with a dynamic heat exchanger and a switch component, and the flow path of the refrigerant in the heat pump unit and the dynamic heat exchanger is switched by the switch component, so that the operation mode of the dynamic heat exchanger can be switched; wherein, in the heating stage, the control switch component switches the dynamic heat exchanger to the evaporation mode. Since the dynamic heat exchanger can exchange heat with the external environment of the drying chamber, on the one hand, part of the cold air can be discharged to the external environment through the dynamic heat exchanger, and the refrigerant in the dynamic heat exchanger absorbs the external heat, so as to realize a rapid rise in the temperature in the drying chamber during the heating stage, thereby shortening the drying time, and since there is no need to set an auxiliary heat source or increase the power of the drying equipment to achieve rapid heating, the drying temperature will not be too high; in the temperature stabilization stage, the control switch component switches the dynamic heat exchanger to the condensation mode, and the excess heat can be discharged to the external environment through the dynamic heat exchanger, which will not cause the drying temperature to be too high, thereby realizing low-temperature drying, and maintaining a higher power for the entire drying equipment, so that the heat pump unit has a higher dehumidification capacity, which can shorten the drying time. Furthermore, the function of the heat pump unit remains unchanged, and only the operating mode of the dynamic heat exchanger is switched. When the operating mode of the dynamic heat exchanger is changed, the heat pump unit does not need to be stopped, and the switching can be achieved without stopping the machine, which can further shorten the drying time. Therefore, the present application can shorten the drying time and achieve low-temperature drying.

Brief Description of the Drawings

[0022] 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:

[0023] FIG1 is a schematic structural diagram of a first embodiment of a drying device of the present application;

[0024] FIG2 is a schematic structural diagram of the drying device in the embodiment of FIG1 in another working mode;

[0025] FIG3 is a structural diagram of a second embodiment of the drying equipment of the present application;

[0026] FIG4 is a schematic structural diagram of the drying device in the embodiment of FIG3 in another working mode;

[0027] FIG5 is a schematic structural diagram of a third embodiment of the drying equipment of the present application;

[0028] FIG6 is a schematic structural diagram of the drying device in the embodiment of FIG5 in another working mode;

[0029] FIG7 is a schematic structural diagram of a fourth embodiment of the drying equipment of the present application;

[0030] FIG8 is a schematic structural diagram of the drying device in the embodiment of FIG7 in another working mode;

[0031] FIG9 is a schematic structural diagram of a fifth embodiment of the drying device of the present application;

[0032] 10 is a schematic structural diagram of the drying device in FIG9 embodiment in another operating mode;

[0033] FIG11 is a structural diagram of a sixth embodiment of the drying device of the present application;

[0034] 12 is a schematic structural diagram of the drying device of FIG. 11 embodiment in another operating mode;

[0035] FIG13 is a structural diagram of a seventh embodiment of the drying device of the present application;

[0036] FIG14 is a schematic diagram of the explosion structure of the drying equipment according to the embodiment of FIG13;

[0037] 15 is a schematic structural diagram of a portion of the structure of an eighth embodiment of the drying device of the present application;

[0038] FIG16 is a schematic diagram of the explosion structure of the drying equipment of the embodiment of FIG15 . [Specific implementation method]

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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).

[0044] 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.

[0045] 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.

[0046] The drying device of the embodiment of the present application can be a device having at least a drying function, such as a clothes dryer, a dry-cleaner, or a dryer. The embodiment of the present application is described using a clothes dryer as an example.

[0047] Currently, clothes dryers generally take a long time to dry clothes, reaching more than 100 minutes. How to shorten the drying time is a research focus. The inventors of this application have found that the long drying time is mainly caused by the following reasons:

[0048] First, during the initial operation of the dryer, the temperature of the clothes in the dryer drum rises slowly. Related technologies address this problem by adding a new heat source (such as electric auxiliary heating). However, electric auxiliary heating has the following problems: (1) High temperature. Electric auxiliary heating reaches a wind temperature of 90 degrees Celsius, which can easily damage clothes. (2) Electric auxiliary heating consumes a lot of energy.

[0049] Second, in the later stages of the dryer's operation, the temperature of the clothes in the drum cannot be too high, which limits the increase in compressor power. In order to maintain the temperature of the clothes in the drum at a low temperature, the power of the drying equipment is limited, and the method of speeding up the drying by increasing the power of the drying equipment is limited.

[0050] To this end, the present application proposes a drying device, as shown in Figures 1 and 2, Figure 1 is a structural diagram of the first embodiment of the drying device of the present application; Figure 2 is a structural diagram of the drying device of the embodiment of Figure 1 when it is in another working mode. The drying device of this embodiment includes: a drying chamber 40 (see Figures 13-15), an air duct housing 16 (see Figures 13-15), a heat pump unit 01, a dynamic heat exchange component 03 and a switch component 02; wherein, the drying chamber 40 is used to accommodate objects to be dried; the air duct housing 16 is connected to the drying chamber 40; the heat pump unit 01 is connected to the air duct housing 16 and has a refrigerant circulation channel; the dynamic heat exchange component 03 includes a dynamic heat exchanger 12, the dynamic heat exchanger 12 is connected to the air duct housing 16, and can exchange heat with the external environment of the drying chamber 40; the switch component 02 is connected to the air duct housing 16. It is connected to the air duct housing 16, and the refrigerant interface of the dynamic heat exchanger 12 and the switch component 02 are both connected to the refrigerant circulation flow channel. The switch component 02 is used to switch the flow path of the refrigerant in the heat pump unit 01 and the dynamic heat exchanger 12 to switch the operating mode of the dynamic heat exchanger 12; wherein, the operating stage of the drying equipment includes a heating stage and a temperature stabilization stage, and the operating mode includes an evaporation mode and a condensation mode; in the heating stage, the control switch component 02 switches the dynamic heat exchanger 12 to the evaporation mode; in the temperature stabilization stage, the control switch component 02 switches the dynamic heat exchanger 12 to the condensation mode.

[0051] The air duct housing 16 supports the heat pump unit 01, the dynamic heat exchange component 03 and the switch component 02 to improve the structural stability of the drying equipment.

[0052] The drying equipment of this embodiment is provided with a dynamic heat exchanger 12 and a switch component 02, and the flow path of the refrigerant in the heat pump unit 01 and the dynamic heat exchanger 12 is switched by the switch component 02, so that the operation mode of the dynamic heat exchanger 12 can be switched; wherein, in the heating stage, the switch component 02 is controlled to switch the dynamic heat exchanger 12 to the evaporation mode. Since the dynamic heat exchanger 12 can exchange heat with the external environment of the drying chamber 40, on the one hand, part of the cold air can be discharged to the external environment through the dynamic heat exchanger 12, and the refrigerant in the dynamic heat exchanger 12 absorbs the external heat, thereby achieving During the heating phase, the temperature in the drying chamber rises rapidly, thereby shortening the drying time. Furthermore, since there is no need to set up an auxiliary heat source or increase the power of the drying equipment to achieve rapid heating, the drying temperature will not be too high. During the temperature stabilization phase, the control switch assembly 02 switches the dynamic heat exchanger 12 to the condensing mode, and the excess heat can be discharged to the external environment through the dynamic heat exchanger 12, which will not cause the drying temperature to be too high, thus achieving low-temperature drying. Furthermore, the entire drying equipment maintains a relatively high power, so that the heat pump unit 01 has a relatively high dehumidification capacity, which can shorten the drying time. Furthermore, the function of the heat pump unit 01 remains unchanged, and only the operating mode of the dynamic heat exchanger 12 is switched. When the operating mode of the dynamic heat exchanger 12 changes, there is no need to stop the operation of the heat pump unit 01, and reversing can be achieved without stopping the machine, which can further shorten the drying time. Therefore, this embodiment can shorten the drying time and achieve low-temperature drying.

[0053] When the dynamic heat exchanger 12 operates in the evaporation mode, the dynamic heat exchanger 12 absorbs heat from the external environment and dissipates heat to the internal environment of the drying chamber 40, thereby achieving a rapid increase in the temperature in the drying chamber 40 and shortening the drying time; when the dynamic heat exchanger 12 operates in the condensation mode, the dynamic heat exchanger 12 dissipates heat to the external environment, thereby reducing the heat entering the internal environment of the drying chamber 40, thereby preventing the temperature in the drying chamber 40 from being too high, and thus enabling low-temperature drying of the drying chamber 40.

[0054] The temperature rising stage refers to a stage in which the temperature in the drying chamber 40 increases, and the temperature stabilizing stage refers to a stage in which the temperature in the drying chamber 40 is maintained within a set temperature range or a certain set temperature.

[0055] Among them, the heating stage is the stage in which the temperature in the drying chamber 40 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.

[0056] The preset temperature may be 45°C to 80°C.

[0057] 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.

[0058] In this embodiment, during the drying apparatus's temperature rise phase, the control switch assembly 02 switches the dynamic heat exchanger 12 to an evaporation mode, causing the dynamic heat exchanger 12 to absorb heat from the external environment and dissipate heat to the internal environment, thereby increasing the rate of temperature rise within the drying chamber 40. Furthermore, during the drying apparatus's temperature stabilization phase, the control switch assembly 02 switches the dynamic heat exchanger 12 to a condensation mode, causing the dynamic heat exchanger 12 to dissipate heat to the external environment. This reduces the amount of heat entering the drying chamber 40, thereby preventing the temperature within the drying chamber 40 from being excessively high and achieving low-temperature drying in the drying chamber 40.

[0059] In other embodiments, the operating stages of the drying equipment are not limited to including only the heating stage and the temperature stabilization stage; and the heating stage is not limited to being the first operating stage of the drying equipment, nor is the temperature stabilization stage limited to being the last operating stage of the drying equipment, and it is not limited to whether the heating stage and the temperature stabilization stage are set adjacent to each other.

[0060] Optionally, the air duct housing 16 of this embodiment also forms a heat exchange cavity connected to the drying chamber 40. The heat pump unit 01 includes a compressor 11, a condenser 13 and an evaporator 14. The condenser 13 and the evaporator 14 are arranged in the heat exchange cavity and exchange heat with the internal environment of the drying chamber 40. The dynamic heat exchanger 12 and the compressor 11 are arranged outside the heat exchange cavity.

[0061] In this embodiment, a heat exchange cavity is formed by the air duct shell 16, which is connected to the drying chamber 40, and the built-in heat exchange components for heat exchange with the drying chamber 40, namely the condenser 13 and the evaporator 14, are arranged in the heat exchange cavity. This can enhance the heat exchange effect between the built-in heat exchange components and the drying chamber 40, thereby improving the drying efficiency of the drying chamber 40; and can reduce the interference of the external environment on the built-in heat exchange components, thereby improving their working efficiency and reducing the chance of damage.

[0062] Among them, this embodiment performs heat exchange with the internal environment of the drying chamber 40 through the built-in heat exchange component. The dynamic heat exchanger 12 can realize heat exchange with the heat exchange cavity provided with the built-in heat exchange component by circulating the refrigerant between the built-in heat exchange component, so that the temperature and humidity of the internal environment of the drying chamber 40 connected to the heat exchange cavity can be adjusted through the dynamic heat exchanger 12.

[0063] 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 .

[0064] Among them, the condenser 13 and the evaporator 14 are connected in series between the outlet of the compressor 11 and the inlet of the compressor 11, so as to realize the circulation flow of the refrigerant through the compressor 11, the condenser 13 and the evaporator 14, realize the condensation and evaporation of the internal environment of the drying chamber 40, and thus realize the drying of the objects to be dried.

[0065] Optionally, the heat pump unit 01 of this embodiment further includes: a throttling component 04. In the evaporation mode, the switch component 02 is switched to input the refrigerant output from the condenser 13 into the dynamic heat exchanger 12 after the throttling action of the throttling component 04; in the condensing mode, the switch component 02 is switched to input the refrigerant output from the dynamic heat exchanger 12 into the evaporator 14 after the throttling action of the throttling component 04.

[0066] The throttling assembly 04 is a component or assembly that controls the flow of fluid. It controls the proper distribution of refrigerant flowing from the previous component to the next component, ensuring that the latter device maintains a normal cooling state. The throttling assembly 04 is typically located between the condenser 13 and the evaporator 14.

[0067] Switch assembly 02 switches the refrigerant flow path through condenser 13, dynamic heat exchanger 12, and evaporator 14 to switch the operating mode of dynamic heat exchanger 12. Specifically, when switch assembly 02 is switched so that the refrigerant output from condenser 13 is throttled by throttling assembly 04 and then input into dynamic heat exchanger 12, dynamic heat exchanger 12 is placed in evaporation mode. 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 and / or the dynamic heat exchanger 12 in the evaporation mode into high-temperature and high-pressure refrigerant vapor after adiabatic compression and send it to the condenser 13; the condenser 13 condenses the high-temperature and high-pressure refrigerant vapor coming out of the compressor 11 under isobaric conditions, dissipates heat to the drying chamber, and the refrigerant in the condenser 13 becomes a high-pressure supercooled liquid; the high-pressure supercooled liquid coming out of the condenser 13 is throttled by the throttling component 04 and becomes a low-temperature and low-pressure refrigerant vapor, which enters the evaporator 14 for evaporation and / or the dynamic heat exchanger 12 in the evaporation mode; the low-temperature and low-pressure refrigerant wet vapor after throttling boils under isobaric conditions in the evaporator 14 and / or the dynamic heat exchanger 12 in the evaporation mode, 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.

[0068] When the switch component 02 is switched to input the refrigerant output from the dynamic heat exchanger 12 into the condenser 13 after being throttled by the throttling component 04, the dynamic heat exchanger 12 can be placed in the condensing mode. Among them, the compressor 11 adiabatically compresses the low-temperature and low-pressure refrigerant vapor from the evaporator 14 into high-temperature and high-pressure refrigerant vapor and supplies it to the condenser 13 and / or the dynamic heat exchanger 12 in condensing mode; the condenser 13 and / or the dynamic heat exchanger 12 in condensing mode condenses the high-temperature and high-pressure refrigerant vapor coming out of the compressor 11 under isobaric conditions and dissipates heat to the drying chamber 40, and the refrigerant in the condenser 13 and / or the dynamic heat exchanger 12 in condensing mode becomes a high-pressure supercooled liquid; the high-pressure supercooled liquid coming out of the condenser 13 and / or the dynamic heat exchanger 12 in condensing mode is throttled by the throttling component 04 and becomes a low-temperature and low-pressure refrigerant vapor, which enters the evaporator 14 for evaporation; the throttled low-temperature and low-pressure refrigerant wet vapor boils under isobaric conditions in the evaporator 14, absorbs heat from 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 causes the water vapor in the wet and hot medium in the drying chamber 40 to be condensed into condensed water and discharged.

[0069] Optionally, the throttling component 04 of this embodiment includes a first throttling device 151, and the refrigerant flowing out of the compressor 11 passes through the condenser 13 and the evaporator 14 in sequence and then returns to the compressor to realize the circulation of the refrigerant; wherein, the dynamic heat exchanger 12 is arranged on the connecting pipeline between the condenser 13 and the evaporator 14, the switch component 02 is arranged on the pipeline between the condenser 13 and the dynamic heat exchanger 12, and on the connecting pipeline between the dynamic heat exchanger 12 and the evaporator 14, and the first throttling device 151 is arranged on the connecting pipeline between the dynamic heat exchanger 12 and the switch component 02.

[0070] The condenser 13 is connected to the outlet of the compressor 11 and the switch assembly 02, the evaporator 14 is respectively connected to the switch assembly 02 and the inlet of the compressor 11, and the first throttle member 151 is arranged between the switch assembly 02 and the dynamic heat exchanger 12. The control switch assembly 02 selectively sets the first throttle member 151 between the dynamic heat exchanger 12 and the condenser 13, or between the dynamic heat exchanger 12 and the evaporator 14.

[0071] The drying device of this embodiment has only one throttle element, namely, first throttle element 151. The position of first throttle element 151 between condenser 13, dynamic heat exchanger 12, and evaporator 14 is controlled by switching switch assembly 02. This switches the flow path of the refrigerant in condenser 13, dynamic heat exchanger 12, and evaporator 14, thereby switching between the evaporation mode and the condensation mode of dynamic heat exchanger 12. This structure has fewer components, is simple in structure, easy to operate, and low in cost.

[0072] The first throttling member 151 of this embodiment may include: an expansion valve, a throttle valve, a throttle plate, a capillary tube, etc.

[0073] In other embodiments, the throttling assembly may be implemented by multiple (two or more) throttling elements.

[0074] Optionally, the switch assembly 02 of this embodiment includes a first switching valve 15. The first switching valve 15 is provided with a main valve port A and at least three sub-valve ports. The main valve port A of the first switching valve 15 is connected to the condenser 13, the first sub-valve port B of the first switching valve 15 is connected to the first throttle 151, the second sub-valve port C of the first switching valve 15 is connected to the evaporator 14, and the third sub-valve port D of the first switching valve 15 is connected to the dynamic heat exchanger 12.

[0075] As shown in Figure 1, the main valve port A and the first sub-valve port B of the first switching valve 15 are controlled to be connected, so that the condenser 13 is connected to the dynamic heat exchanger 12, and the second sub-valve port C and the third sub-valve port D of the first switching valve 15 are controlled to be connected, so that the dynamic heat exchanger 12 is connected to the evaporator 14, and the refrigerant coming out of the condenser 13 first passes through the first throttling device 151 and then passes through the dynamic heat exchanger 12 and the evaporator 14 in turn, so that the dynamic heat exchanger 12 is in evaporation mode.

[0076] As shown in Figure 2, the main valve port A and the third sub-valve port D of the first switching valve 15 are controlled to be connected, so that the condenser 13 is connected to the dynamic heat exchanger 12, and the second sub-valve port C and the first sub-valve port B of the first switching valve 15 are controlled to be connected, so that the dynamic heat exchanger 12 is connected to the evaporator 14, and the refrigerant coming out of the condenser 13 first passes through the dynamic heat exchanger 12 and then passes through the first throttling device 151, so that the dynamic heat exchanger 12 is in condensing mode.

[0077] As shown in FIG1 , during the temperature rise phase of the drying apparatus, the main valve port A of the first switching valve 15 is controlled to be connected to the first sub-valve port B, and the second sub-valve port C of the first switching valve 15 is controlled to be connected to the third sub-valve port D, so that the dynamic heat exchanger 12 is in the evaporation mode. The dynamic heat exchanger 12 discharges cold air to the external environment, which is equivalent to the dynamic heat exchanger 12 absorbing heat from the external environment, thereby increasing the amount of heat provided to the drying chamber 40, accelerating the temperature rise rate of the drying chamber 40, and shortening the drying time. As shown in FIG2 , during the temperature stabilization phase of the drying apparatus, i.e., the constant speed drying phase, the main valve port A of the first switching valve 15 is controlled to be connected to the third sub-valve port D, and the second sub-valve port C of the first switching valve 15 is controlled to be connected to the first sub-valve port B, so that the dynamic heat exchanger 12 is in the condensation mode. The dynamic heat exchanger 12 discharges hot air to the external environment, which is equivalent to the refrigerant releasing heat to the outside, thereby relatively reducing the amount of heat provided to the drying chamber 40. This ensures that the power of the compressor 11 can be maintained at a high level while the temperature in the drying chamber 40 is not too high, thereby maintaining a low temperature in the drying chamber 40 and achieving low-temperature drying. Since the power of the compressor 11 can be maintained at a high level, the evaporator 14 has a strong cooling capacity and a strong ability to condense water, which enables the drying equipment to condense water efficiently.

[0078] Optionally, the first switching valve 15 of this embodiment may include a four-way valve.

[0079] Optionally, the drying equipment of this embodiment also includes a first pipeline 21, a second pipeline 22, a third pipeline 23, a fourth pipeline 24, a fifth pipeline 25 and a sixth pipeline 26; wherein, the first pipeline 21 connects the outlet of the compressor 11 and the condenser 13; the second pipeline 22 connects the condenser 13 and the main valve port A; the third pipeline 23 connects the third sub-valve port D and the dynamic heat exchanger 12; the fourth pipeline 24 connects the dynamic heat exchanger 12 and the first sub-valve port B, and the first throttling device 151 is arranged on the fourth pipeline 24; the fifth pipeline 25 connects the dynamic evaporator 14 and the second sub-valve port C; the sixth pipeline 26 connects the dynamic evaporator 14 and the inlet of the compressor 11.

[0080] This embodiment realizes the connection between each group of two components through independently set pipelines, which not only enables the compressor 11, dynamic heat exchanger 12, condenser 13 and evaporator 14 to be set 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.

[0081] In other embodiments, two three-way valves can also be used to implement the switching assembly, the main valve ports of the two three-way valves are connected to the condenser, the two branch valve ports of one three-way valve are respectively connected to the dynamic heat exchanger and the evaporator, and the two branch valve ports of the other three-way valve are respectively connected to the dynamic heat exchanger and the evaporator.

[0082] In other embodiments, four one-way valves may be used to implement the switch assembly, with one-way valves provided at the two ports of the condenser and the dynamic heat exchanger, and one-way valves provided between the two ports of the dynamic heat exchanger and the evaporator.

[0083] In another embodiment, as shown in Figures 3 and 4, Figure 3 is a schematic structural diagram of a second embodiment of the drying device of the present application; Figure 4 is a schematic structural diagram of the drying device of the embodiment of Figure 3 in another operating mode. This embodiment differs from the embodiments of Figures 1 and 2 in that the drying device of this embodiment further includes a first switch K1, which is disposed on the connecting pipe between the dynamic heat exchanger 12 and the inlet of the compressor 11; in evaporation mode, the first switch K1 connects the dynamic heat exchanger 12 to the inlet of the compressor 11; in condensing mode, the first switch K1 disconnects the dynamic heat exchanger 12 from the inlet of the compressor 11.

[0084] In the embodiment of FIG1 , in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in series. In this embodiment, in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in parallel, as shown in FIG3 . In evaporation mode, the refrigerant exits the condenser 13 and enters the dynamic heat exchanger 12 after being throttled by the first throttle member 151. Part of the refrigerant exiting the dynamic heat exchanger 12 flows directly into the compressor 11, and part flows into the evaporator 14 before flowing into the compressor 11. As shown in FIG4 , in condensing mode, because the first switch K1 disconnects the dynamic heat exchanger 12 from the inlet of the compressor 11, the refrigerant exiting the dynamic heat exchanger 12 will not flow directly into the compressor 11. Therefore, the first switch K1 will not affect the operation of the drying equipment.

[0085] In this embodiment, the first switch can be controlled to selectively turn on and off in the temperature rising mode of the drying device based on the conditions of the objects to be dried, drying requirements, etc.

[0086] Optionally, the first switch K1 may include a three-way valve, and three valve ports of the three-way valve may be connected to the evaporator 14 , the inlet of the compressor 11 , and the dynamic heat exchanger 12 through corresponding pipelines, respectively.

[0087] Optionally, the dynamic heat exchanger 12 may be connected to the inlet of the compressor 11 via a branch pipeline, and the first switch K1 may also be a one-way valve provided on the branch pipeline.

[0088] In another embodiment, the evaporator is connected to the connecting pipeline between the dynamic heat exchanger and the first throttling element through a pipeline, and a switch is provided on the pipeline. In the evaporation mode, the switch is controlled to connect the dynamic heat exchanger with the evaporator; in the condensation mode, the switch is controlled to disconnect the dynamic heat exchanger from the evaporator.

[0089] Of course, in other embodiments, other elements with on-off characteristics, or with on-off characteristics and conduction degree adjustable characteristics may be used to replace the first switch.

[0090] In another embodiment, as shown in Figures 5 and 6, Figure 5 is a schematic structural diagram of a third embodiment of the drying apparatus of the present application; Figure 6 is a schematic structural diagram of the drying apparatus of the embodiment of Figure 5 in another operating mode. This embodiment differs from the embodiment of Figure 1 in that the drying apparatus of this embodiment further includes a fourth throttle member 154 disposed between the condenser 13 and the evaporator 14.

[0091] In the embodiment of Figure 1, the evaporator 14 and the dynamic heat exchanger 12 are arranged in series. In the evaporation mode of this embodiment, the evaporator 14 and the dynamic heat exchanger 12 are arranged in parallel. As shown in Figure 5, part of the refrigerant coming out of the condenser 13 enters the evaporator 14 after being throttled by the fourth throttle member 154, and part of the refrigerant comes out of the condenser 13 and enters the dynamic heat exchanger and the evaporator 14 in sequence after being throttled by the first throttle member 151.

[0092] In the embodiment of Figure 2, in the condensing mode, the condenser 13 and the dynamic heat exchanger 12 are arranged in series. In this embodiment, in the condensing mode, the condenser 13 and the dynamic heat exchanger 12 are arranged in parallel, as shown in Figure 6. After passing through the condenser 13, part of the refrigerant coming out of the compressor 11 enters the dynamic heat exchanger 12 and is throttled, and part is directly throttled.

[0093] In this embodiment, the opening of the fourth throttle element 154 can be controlled based on the conditions of the object to be dried, the drying requirements, etc. to adjust the heat exchange performance of the dynamic heat exchanger 12; the fourth throttle element 154 can also be controlled to be closed based on the above conditions to switch the condenser 13 and the dynamic heat exchanger 12 to a series setting.

[0094] In other embodiments, the fourth throttle element may also be provided at the second branch valve port of the first switching valve.

[0095] In other embodiments, a first switch and a fourth throttle element may be further provided on the basis of the embodiment of FIG. 1 , and their structures and working principles may refer to the above embodiments.

[0096] In other embodiments, based on the above embodiments, the compressor outlet can be selectively connected to the dynamic heat exchanger via a switch. Specifically, in evaporation mode, the switch is controlled to disconnect the compressor outlet from the dynamic heat exchanger; in condensing mode, the switch is controlled to connect the compressor outlet to the dynamic heat exchanger, so that the dynamic heat exchanger in condensing mode is connected in parallel or in a mixed configuration with the condenser.

[0097] In another embodiment, as shown in Figures 7 and 8, Figure 7 is a schematic structural diagram of the fourth embodiment of the drying device of the present application; Figure 8 is a schematic structural diagram of the drying device of the embodiment of Figure 7 when in another working mode. The difference between this embodiment and the embodiments of Figures 1 and 2 is that the throttling component 04 of this embodiment includes: a first one-way valve 201, a second throttling member 202, a second one-way valve 203 and a third throttling member 204; wherein the first one-way valve 201 is connected to the switch component 02 and the condenser 13 respectively, and the conduction direction of the first one-way valve 201 is from the switch component 02 to the condenser 13; the second throttling member 202 is connected to the switch component 02 and the condenser 13 respectively; the second one-way valve 203 is connected to the condenser 13 and the dynamic heat exchanger 12 respectively, and the conduction direction of the second one-way valve 203 is from the dynamic heat exchanger 12 to the condenser 13; the third throttling member 204 is connected to the condenser 13 and the dynamic heat exchanger 12 respectively.

[0098] This embodiment utilizes a first one-way valve 201 and a second throttle member 202 arranged in parallel between the switch assembly 02 and the condenser 13, and a second one-way valve 203 and a third throttle member 204 arranged in parallel between the condenser 13 and the dynamic heat exchanger 12 to realize a throttling assembly. The conduction between the switch assembly and the condenser 13 can be realized through the first one-way valve 201, or the throttling between the switch assembly and the condenser 13 can be realized through the second throttle member 202. The conduction between the dynamic heat exchanger 12 and the condenser 13 can also be realized through the second one-way valve 203, or the throttling between the dynamic heat exchanger 12 and the condenser 13 can be realized through the third throttle member 204. This enables the conduction and throttling between the condenser 13, the dynamic heat exchanger 12, and the switch assembly to be individually controlled, thereby improving the control accuracy and avoiding interference in the control of different branches.

[0099] The second throttling element 202 and the third throttling element 204 of this embodiment may include: an expansion valve, a throttle valve, a throttle plate, a capillary tube, etc.

[0100] The control switch component 02 connects the outlet of the compressor 11 with the first one-way valve 201 and the second throttle 202, controls the first one-way valve 201 to be turned on and controls the second throttle 202 to be turned off, controls the switch component 02 to connect the dynamic heat exchanger 12 with the condenser, and controls the second one-way valve 203 to be turned off and controls the third throttle 204 to be turned on, so that the refrigerant coming out of the compressor 11 flows into the compressor 11 after passing through the first one-way valve 201, the condenser 13, the third throttle 204, the dynamic heat exchanger 12 and the evaporator 14 in sequence, thereby making the dynamic heat exchanger 12 in evaporation mode.

[0101] The control switch component 02 connects the outlet dynamic heat exchanger 12 of the compressor 11, controls the switch component 02 to connect the first one-way valve 201 and the second throttle 202 to the evaporator 14, controls the second one-way valve 203 to be turned on and controls the third throttle 204 to be turned off, and controls the second throttle 202 to be turned on, so that the refrigerant coming out of the compressor 11 flows into the compressor 11 after passing through the dynamic heat exchanger 12, the second one-way valve 203, the condenser 13, the second throttle 202 and the evaporator 14 in sequence, thereby making the dynamic heat exchanger 12 in condensing mode.

[0102] Optionally, the switch assembly 02 of this embodiment includes a second switching valve 150, which is provided with a main valve port A1 and at least three sub-valve ports. The main valve port A1 of the second switching valve 150 is connected to the compressor 11, the first sub-valve port B1 of the second switching valve 150 is connected to the first one-way valve 201 and the second throttling member 202, the second sub-valve port C1 of the second switching valve 150 is connected to the evaporator 14, and the third sub-valve port D1 of the second switching valve 150 is connected to the dynamic heat exchanger 12.

[0103] As shown in Figure 7, during the heating stage of the drying equipment, the main valve port A1 of the second switching valve 150 is controlled to be connected to the first sub-valve port B1, and the second sub-valve port C1 of the second switching valve 150 is controlled to be connected to the third sub-valve port D1, and the second throttle member 202 is controlled to be cut off and the third throttle member 204 is controlled to be turned on, so that the dynamic heat exchanger 12 is in evaporation mode, the heating speed of the drying chamber is accelerated, and the drying time is shortened; as shown in Figure 8, during the temperature stabilization stage of the drying equipment, the main valve port A1 of the second switching valve 150 is controlled to be connected to the third sub-valve port D1, and the second sub-valve port C1 of the second switching valve 150 is controlled to be connected to the first sub-valve port B1, the second throttle member 202 is controlled to be turned on and the third throttle member 204 is cut off, so that the dynamic heat exchanger 12 is in condensation mode, the low temperature in the drying chamber is maintained, and low-temperature drying is achieved.

[0104] Optionally, the second switching valve 150 of this embodiment may include a four-way valve. During the temperature rise phase, the four-way valve is de-energized. At this time, the main valve port A1 of the four-way valve is connected to the first sub-valve port B1, and the third sub-valve port D1 is connected to the second sub-valve port C1. Since the conduction direction of the first one-way valve 201 is consistent with the flow direction of the refrigerant, the refrigerant directly passes through the first one-way valve 201 without passing through the second throttling member 202, flows to the condenser 13, and reaches the outlet of the condenser 13. Since the conduction direction of the second one-way valve 203 is opposite to that of the first one-way valve 201, the refrigerant does not pass through the first one-way valve 201, but instead flows out of the third throttling member 204. The refrigerant exiting the third throttling member 204 passes through the dynamic heat exchanger 12, flows from the third sub-valve port D1 to the second sub-valve port C1, and then flows to the evaporator 14. At this time, the dynamic heat exchanger 12 functions as an evaporator. In the constant speed drying stage, that is, the steady temperature stage, the four-way valve is energized, the main valve port A1 of the four-way valve is connected to the third sub-valve port D1, the first sub-valve port B1 is connected to the second sub-valve port C1, and the refrigerant flows out after passing through the dynamic heat exchanger 12. Since the conduction direction of the second one-way valve 203 is consistent with the flow direction of the refrigerant, the refrigerant directly passes through the second one-way valve 203 without passing through the third throttling device 204, flows to the condenser 13, and reaches the outlet of the condenser 13. At this time, since the conduction direction of the first one-way valve 201 is opposite to that of the second one-way valve 203, the refrigerant does not pass through the first one-way valve 201, but comes out from the second throttling device 202. The refrigerant coming out of the second throttling device 202 flows from the first sub-valve port B1 to the second sub-valve port C1, and then flows to the evaporator 14. In this way, the dynamic heat exchanger 12 is used as a condenser.

[0105] Optionally, the drying equipment of this embodiment further includes a pipeline assembly, the structure of which can refer to the above embodiment.

[0106] This embodiment realizes the connection between each group of two components through independently set pipelines, which not only enables the compressor 11, dynamic heat exchanger 12, condenser 13 and evaporator 14 to be set 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.

[0107] In other embodiments, two three-way valves can also be used to implement the switching assembly, the main valve ports of the two three-way valves are connected to the compressor, the two branch valve ports of one three-way valve are respectively connected to the first one-way valve and the evaporator, and the two branch valve ports of the other three-way valve are respectively connected to the dynamic heat exchanger and the evaporator.

[0108] In other embodiments, four one-way valves can also be used to implement the switch assembly, with one-way valves respectively provided between the compressor, the dynamic heat exchanger and the first one-way valve, and one-way valves respectively provided between the two ports of the dynamic heat exchanger and the evaporator and the first one-way valve.

[0109] In another embodiment, as shown in Figures 9 and 10, Figure 9 is a schematic structural diagram of the fifth embodiment of the drying device of the present application; Figure 10 is a schematic structural diagram of the drying device of the embodiment of Figure 9 in another operating mode. The difference between this embodiment and the embodiments of Figures 7 and 8 is that the drying device of this embodiment further includes a first switch K1, which is disposed on the connecting pipe between the dynamic heat exchanger 12 and the inlet of the compressor 11; in evaporation mode, the first switch K1 connects the dynamic heat exchanger 12 to the inlet of the compressor 11; in condensing mode, the first switch K1 disconnects the dynamic heat exchanger 12 from the inlet of the compressor 11.

[0110] In the embodiment of FIG7 , in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in series. In this embodiment, in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in parallel. As shown in FIG9 , in evaporation mode, the refrigerant exits the condenser 13 and enters the dynamic heat exchanger 12 after being throttled by the third throttle member 204. Part of the refrigerant exiting the dynamic heat exchanger 12 flows directly into the compressor 11, and part flows into the evaporator 14 before flowing into the compressor 11. As shown in FIG10 , in condensing mode, because the first switch K1 disconnects the dynamic heat exchanger 12 from the inlet of the compressor 11, the refrigerant exiting the dynamic heat exchanger 12 will not flow directly into the compressor 11. Therefore, the first switch K1 will not affect the operation of the drying equipment.

[0111] In this embodiment, the first switch can be controlled to selectively turn on and off in the temperature rising mode of the drying device based on the conditions of the objects to be dried, drying requirements, etc.

[0112] For the real-time method of the first switch, please refer to the above embodiment.

[0113] In another embodiment, as shown in Figures 11 and 12, Figure 11 is a schematic structural diagram of a sixth embodiment of the drying device of the present application; Figure 12 is a schematic structural diagram of the drying device of the embodiment of Figure 11 in another operating mode. This embodiment differs from the embodiment of Figure 1 in that the drying device of this embodiment further includes a second switch K2 disposed on the connecting pipe between the dynamic heat exchanger 12 and the evaporator 14; in evaporation mode, the second switch K2 connects the dynamic heat exchanger 12 to the evaporator 14; in condensation mode, the second switch K2 disconnects the dynamic heat exchanger 12 from the evaporator 14.

[0114] In the embodiment of FIG. 7 , in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in series. In this embodiment, in evaporation mode, the evaporator 14 and the dynamic heat exchanger 12 are arranged in parallel, as shown in FIG. 11 . In evaporation mode, the refrigerant exits the condenser 13 and is throttled by the third throttle member 204. Part of the refrigerant enters the evaporator 14 directly, while part of the refrigerant enters the dynamic heat exchanger 12 and then enters the evaporator 14. As shown in FIG. 12 , in condensing mode, because the second switch K2 disconnects the dynamic heat exchanger 12 from the evaporator 14, the refrigerant exiting the dynamic heat exchanger 12 does not flow directly into the evaporator 14. Therefore, the second switch K2 does not affect the operation of the drying equipment.

[0115] In this embodiment, the first switch can be controlled to selectively turn on and off in the temperature rising mode of the drying device based on the conditions of the objects to be dried, drying requirements, etc.

[0116] Optionally, the second switch K2 may include a three-way valve, and the three valve ports of the three-way valve may be connected to the evaporator 14, the second one-way valve 203 and the dynamic heat exchanger 12 through corresponding pipelines respectively.

[0117] Of course, in other embodiments, other elements with on-off characteristics, or with on-off characteristics and conduction degree adjustable characteristics may be used to replace the second switch.

[0118] In other embodiments, a first switch and a second switch may be further provided on the basis of the embodiment of FIG. 1 , and their structures and working principles may refer to the above embodiments.

[0119] In other embodiments, based on the above embodiment, a third switch can be used to selectively connect the compressor outlet to the condenser. In condensing mode, part of the refrigerant from the compressor can flow directly into the condenser, while part can flow into the dynamic heat exchanger and then into the condenser, thus achieving a parallel-parallel configuration between the condenser and the dynamic heat exchanger.

[0120] The heat exchange performance of the corresponding components can be adjusted by adjusting the opening of the throttling member in the above embodiment, thereby meeting different drying requirements of the drying chamber or meeting different power consumption requirements.

[0121] In another embodiment, as shown in Figures 13 and 14, Figure 13 is a schematic structural diagram of the seventh embodiment of the drying device of the present application; Figure 14 is a schematic exploded structural diagram of the drying device of the embodiment of Figure 13. In this embodiment, based on the above embodiment, the dynamic heat exchange component 03 further includes a first fan 17, the condenser 13 and the evaporator 14 are arranged in the heat exchange chamber, and the first fan 17, the dynamic heat exchanger 12 and the compressor 11 are arranged outside the heat exchange chamber; the dynamic heat exchanger 12 is located between the first fan 17 and the compressor 11; wherein, the first fan 17 is controlled to operate to promote heat exchange between the dynamic heat exchanger 12 and the external environment; and the first fan 17 is controlled to stop operating to reduce heat exchange between the dynamic heat exchanger 12 and the external environment.

[0122] The operating stages of the drying equipment of this embodiment include a heating stage, a temperature stabilization stage and a shutdown stage. The first fan 17 works in the heating stage and the temperature stabilization stage to promote heat exchange between the dynamic heat exchanger 12 and the external environment; the first fan 17 does not work in the shutdown stage to reduce heat exchange between the dynamic heat exchanger 12 and the external environment.

[0123] In this embodiment, a first fan 17 is set near the dynamic heat exchanger 12. The heat exchange efficiency between the dynamic heat exchanger 12 and the external environment can be controlled by controlling the on / off mode of the first fan 17, and the heat exchange efficiency of the dynamic heat exchanger 12 in the heating stage and the temperature stabilization stage can be improved.

[0124] The dynamic heat exchanger 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 equipment.

[0125] In other embodiments, the dynamic heat exchanger 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.

[0126] Optionally, the condenser 13 and the evaporator 14 of this embodiment are arranged along the first horizontal direction X in the heat exchange cavity.

[0127] In this embodiment, the built-in condenser and 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.

[0128] Optionally, the air duct housing 16 further forms an installation area that is isolated from the heat exchange cavity and located outside the heat exchange cavity, and the first fan 17, the dynamic heat exchanger 12, and the compressor 11 are arranged along the first horizontal direction X in the air duct housing 16. The air duct housing 16 further forms an installation area that is isolated from the heat exchange cavity and located outside the heat exchange cavity, 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.

[0129] The row where the dynamic heat exchanger 12 and the evaporator 14 are located and the row where the condenser 13 , the compressor 11 and the first fan 17 are located are arranged along the second horizontal direction Y.

[0130] In this embodiment, the row where the condenser 13 and the evaporator 14 are located and the row where the dynamic heat exchanger 12, the compressor 11 and the first fan 17 are located are arranged along the second horizontal direction Y that is 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.

[0131] In other embodiments, the condenser and evaporator may be arranged at an angle to the horizontal plane, for example, less than or equal to 10°. Furthermore, the dynamic heat exchanger, compressor, and first fan may be arranged at an angle to the horizontal plane, non-perpendicular to the condenser and evaporator. These arrangements may be adjusted based on specific needs.

[0132] 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 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.

[0133] In this embodiment, the compressor 11, the dynamic heat exchanger 12, the first fan 17, the 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.

[0134] 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.

[0135] Optionally, the air duct housing 16 can form an installation cavity on the installation area, and the compressor 11 and the dynamic heat exchanger 12 are both arranged in the installation cavity. The side wall of the installation cavity close to the dynamic heat exchanger 12 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.

[0136] The throttling element can be arranged at a port of the external dynamic heat exchanger and can be located outside the heat exchange cavity to facilitate adjustment, maintenance, loading and unloading, etc.

[0137] Of course, the throttling element can also be arranged inside or outside the heat exchange cavity according to factors such as actual pipeline design.

[0138] 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.

[0139] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0140] Optionally, the heat exchange cavity is provided with an air outlet communicating with the drying chamber 40 and an air inlet arranged opposite to the air outlet; the distance between the dynamic heat exchanger 12 and the air inlet is smaller than the distance between the dynamic heat exchanger 12 and the air outlet.

[0141] During the temperature rising stage, controlling the dynamic heat exchanger 12 to be in the evaporation mode can reduce the risk of the dynamic heat exchanger 12 absorbing heat from the air outlet of the heat exchange chamber, and can make the drying chamber 40 heat up quickly; during the temperature stabilization stage, controlling the dynamic heat exchanger 12 to be in the condensation mode can reduce the risk of the dynamic heat exchanger 12 dissipating heat to the air outlet of the heat exchange chamber, that is, the air inlet of the drying chamber 40, thereby reducing the risk of the drying chamber 40 being overheated.

[0142] In this embodiment, the evaporator 14 is arranged close to the air inlet of the heat exchange chamber, and the condenser 13 is arranged close to the air outlet of the heat exchange chamber; and the air outlet of the installation chamber is arranged on the same side as the air inlet of the heat exchange chamber, which can optimize the structure of the entire drying equipment.

[0143] In other embodiments, the heat exchange efficiency of the dynamic heat exchanger can be adjusted by controlling the power level of the first fan, thereby adjusting the drying parameter performance of the drying chamber 40, or the drying performance parameters of the drying equipment can be adjusted by controlling the power of the compressor, or the first fan and the compressor can be jointly controlled to adjust the drying performance parameters of the drying equipment to meet different drying needs.

[0144] In another embodiment, the drying equipment of this embodiment further includes: a temperature sensor and a controller based on the drying equipment of the above embodiment, wherein 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, and the controller determines the operating stage of the drying equipment based on the temperature, and controls the first fan to operate in the heating stage and the temperature stabilization stage.

[0145] A controller refers to a circuit or integrated chip that has control and data calculation functions.

[0146] The dryer starts working and controls the operation of the first fan and the compressor. The temperature sensor obtains the real-time temperature in the drying chamber during the entire working stage of the dryer and uploads the real-time temperature to the controller; when entering the heating stage, the controller controls the switch component to switch to input the refrigerant output from the condenser into the dynamic heat exchanger after the throttling effect of the throttling component, so that the dynamic heat exchanger is in evaporation mode; the controller compares the real-time temperature of the drying chamber 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 switch component to switch to input the refrigerant output from the dynamic heat exchanger into the evaporator after the throttling effect of the throttling component, so that the dynamic heat exchanger is in condensation mode.

[0147] In other embodiments, the temperature sensor may also be disposed in a location such as the heat exchange cavity.

[0148] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0149] 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.

[0150] The partition plate 20 may be disposed directly below or laterally below the evaporator 14 .

[0151] 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.

[0152] 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 .

[0153] 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 .

[0154] 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.

[0155] 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.

[0156] 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.

[0157] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0158] Of course, in other embodiments, as shown in Figures 15 and 16 , the air duct mechanism 31 may 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.

[0159] Similar improvements can be made to the other embodiments above, which will not be described in detail here.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] In one application scenario, when the user selects the quick drying mode, the compressor runs at a maximum of 2200W, which does not cause the drying chamber temperature to exceed 75°C. The drying time for 3kg of clothes can be reduced from 100 minutes to 30 minutes.

[0165] 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.

[0166] 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 built-in evaporator.

[0167] 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.

[0168] 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; A dynamic heat exchange assembly, including a dynamic heat exchanger, connected to the air duct housing and capable of exchanging heat with the external environment of the drying chamber; A switch assembly is connected to the air duct housing, and the refrigerant interface of the dynamic heat exchanger and the switch assembly are both connected to the refrigerant circulation channel. The switch assembly is used to switch the flow path of the refrigerant in the heat pump unit and the dynamic heat exchanger to switch the operating mode of the dynamic heat exchanger; Among them, the operation stages of the drying equipment include a heating stage and a temperature stabilization stage, and the operation modes include an evaporation mode and a condensation mode; in the heating stage, the switch component is controlled to switch the dynamic heat exchanger to the evaporation mode; in the temperature stabilization stage, the switch component is controlled to switch the dynamic heat exchanger to the condensation mode.

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 condenser and an evaporator. The condenser and the evaporator are arranged in the heat exchange cavity, and the dynamic heat exchanger and the compressor are arranged outside the heat exchange cavity.

3. The drying equipment according to claim 2, characterized in that: The dynamic heat exchange component also includes: a first fan disposed outside the heat exchange chamber, wherein the dynamic heat exchanger is located between the first fan and the compressor; The first fan is controlled to operate to promote heat exchange between the dynamic heat exchanger and the external environment; and the first fan is controlled to stop operating to reduce heat exchange between the dynamic heat exchanger and the external environment.

4. The drying equipment according to claim 2, characterized in that: The heat pump unit also includes: The throttling component, in the evaporation mode, the switch component is switched to input the refrigerant output from the condenser into the dynamic heat exchanger after the throttling action of the throttling component; in the condensing mode, the switch component is switched to input the refrigerant output from the dynamic heat exchanger into the evaporator after the throttling action of the throttling component.

5. The drying equipment according to claim 4, characterized in that: The throttling component includes: A first throttling member, the condenser is connected to the outlet of the compressor and the switch assembly, the evaporator is respectively connected to the switch assembly and the inlet of the compressor, the first throttling member is arranged between the switch assembly and the dynamic heat exchanger, and the switch assembly is controlled to selectively set the first throttling member between the dynamic heat exchanger and the condenser, or between the dynamic heat exchanger and the evaporator.

6. The drying equipment according to claim 5, characterized in that: The switch assembly includes a first switching valve, the main valve port of the first switching valve is connected to the condenser, the first sub-valve port of the first switching valve is connected to the first throttling device, the second sub-valve port of the first switching valve is connected to the evaporator, and the third sub-valve port of the first switching valve is connected to the dynamic heat exchanger.

7. The drying equipment according to claim 4, characterized in that: The throttling component includes: a first one-way valve, connected to the switch assembly and the condenser, respectively, with a conducting direction from the switch assembly to the condenser; a second throttling member, connected to the switch assembly and the condenser respectively; a second one-way valve, connected to the condenser and the dynamic heat exchanger, respectively, with the conduction direction thereof being from the dynamic heat exchanger to the condenser; The third throttling element is connected to the condenser and the dynamic heat exchanger respectively.

8. The drying equipment according to claim 7, characterized in that: The switch assembly includes a second switching valve, the main valve port of the second switching valve is connected to the compressor, the first sub-valve port of the second switching valve is connected to the first one-way valve and the second throttling member, the second sub-valve port of the second switching valve is connected to the evaporator, and the third sub-valve port of the second switching valve is connected to the dynamic heat exchanger.

9. The drying equipment according to claim 5 or 7, characterized in that: The drying equipment also includes: a first switch, provided on a connecting pipe between the dynamic heat exchanger and the inlet of the compressor; In the evaporation mode, the first switch connects the dynamic heat exchanger to the inlet of the compressor; in the condensing mode, the first switch disconnects the dynamic heat exchanger from the inlet of the compressor.

10. The drying device according to claim 5, characterized in that: The drying equipment also includes: The fourth throttling element is arranged between the condenser and the evaporator.

11. The drying equipment according to claim 7, characterized in that: The drying equipment also includes: a second switch, provided on the connecting pipe between the dynamic heat exchanger and the evaporator; In the evaporation mode, the second switch connects the dynamic heat exchanger to the evaporator; in the condensing mode, the second switch disconnects the dynamic heat exchanger from the evaporator.

12. The drying equipment according to claim 7, characterized in that: The drying equipment also includes: The third switch selectively connects the condenser to the outlet of the compressor.

13. The drying equipment according to claim 2, characterized in that: The condenser and the evaporator are arranged in the heat exchange cavity along a first horizontal direction.

14. 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 dynamic heat exchanger and the air inlet is smaller than the distance between the dynamic heat exchanger and the air outlet.

15. The drying device 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.

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