Heating and cooling machine

Abstract

The utility model discloses a kind of cold and warm machines, cold and warm machine includes: electromagnet coil, heating element, first wind wheel and axial flow fan, heating element is configured to heat under the action of magnetic field, electromagnet coil is located at the outside of heating element, at least part of first wind wheel is located inside heating element to drive air to flow through heating element, axial flow fan is located at the outside of heating element, axial flow fan is correspondingly arranged with electromagnet coil, cold and warm machine has warm air mode and cold air mode, in warm air mode, electromagnet coil is powered on and heating element heats, first wind wheel and axial flow fan are opened;In cold air mode, electromagnet coil is powered off and at least first wind wheel operates. By setting axial flow fan corresponding with electromagnet coil, axial flow fan drives air to flow to electromagnet coil to dissipate heat to electromagnet coil, it is favorable to prevent electromagnet coil from overheating, to facilitate guarantee the normal operation of electromagnet coil, and cold and warm machine can provide suitable air output according to the use demand of user, improve the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a cooling and heating unit. Background Technology

[0002] A heating and cooling machine is a type of heater. It can quickly raise the room temperature by using convection to generate warm air. It also has the advantages of being small in size and light in weight, making it particularly suitable for heating small spaces such as homes and offices.

[0003] In related technologies, the poor heat dissipation of the electromagnetic coil in the heating and cooling machine makes it prone to overheating, affecting the normal operation of the heating and cooling machine. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a cooling and heating machine, in which the electromagnetic coil has good heat dissipation effect, which is conducive to ensuring the normal operation of the cooling and heating machine and improving the efficiency of the output hot air of the cooling and heating machine.

[0005] A heater / cooler includes: an electromagnetic coil energized to generate a magnetic field; a heating element configured to heat up under the influence of the magnetic field, the heating element being formed in a ring shape, the electromagnetic coil being disposed on the outer side of the heating element; a first impeller, at least a portion of which is located inside the heating element to drive airflow through the heating element; and an axial fan impeller disposed on the outer side of the heating element, the axial fan impeller being correspondingly arranged with the electromagnetic coil to deliver airflow toward the electromagnetic coil; the heater / cooler includes a warm air mode and a cold air mode, in which the electromagnetic coil is energized and the heating element heats up, and the first impeller and the axial fan impeller are activated; in the cold air mode, the electromagnetic coil is de-energized and at least the first impeller operates.

[0006] According to the embodiments of the present invention, the heating and cooling unit, by setting an axial flow fan corresponding to the electromagnetic coil, can drive air to flow towards the electromagnetic coil. When the air flows through the electromagnetic coil, it can dissipate heat from the electromagnetic coil, which helps to prevent the electromagnetic coil from overheating. Furthermore, the airflow speed and volume output by the axial flow fan are large, which helps to improve the heat dissipation effect of the electromagnetic coil, thereby helping to ensure the normal operation of the electromagnetic coil and thus the normal operation of the heating and cooling unit. In addition, the heating and cooling unit has a cold air mode and a warm air mode, which allows the heating and cooling unit to provide appropriate air output according to the user's needs, which helps to improve the functionality of the heating and cooling unit and improve the user experience.

[0007] According to some embodiments of the present invention, the axial flow impeller is fixed to the first impeller so as to rotate synchronously with the first impeller.

[0008] According to some embodiments of the present invention, the first impeller includes a first part and a second part, the first part being located inside the heating element, the second part being located outside the heating element, and the axial flow impeller being fixed to the axial end of the second part.

[0009] According to some embodiments of the present invention, the axial flow impeller includes a mounting base and a plurality of axial flow blades disposed on the mounting base; the maximum distance between any two points of the mounting base is Di, the outer diameter of the axial flow blades is Do, and the axial flow impeller is configured such that the ratio of Di / Do is in the range of 0.5 to 0.8.

[0010] According to some embodiments of the present invention, the first impeller is a centrifugal impeller to deliver air toward the inner wall of the heating element.

[0011] According to some embodiments of the present invention, the axial flow impeller includes a mounting base and a plurality of axial flow blades disposed on the mounting base; the maximum diameter of the centrifugal blades of the first impeller is Dc, the maximum distance between any two points of the mounting base is Di, and the ratio of Di / Dc ranges from 0.8 to 1.4.

[0012] According to some embodiments of the present invention, in the axial direction of the first impeller, the overlap length between the heating element and the blades of the first impeller is sp, the axial length of the blades of the first impeller is Lb, and the cooling and heating machine is configured to satisfy the following: the range of sp / Lb value is 0.3≤sp / Lb<1.

[0013] According to some embodiments of this utility model, in the axial direction of the first impeller, the axial length of the heating element is Lt 1, and the cooling and heating machine satisfies that the Lt1 / Lb value ranges from 0.5 to 1.1.

[0014] According to some embodiments of the present invention, the heating and cooling unit further includes a coil support, which is formed into a ring structure and is sleeved on the heating element. The electromagnetic coil is wound around the coil support, and a heat dissipation space is provided between the coil support and the heating element. The first impeller is configured to guide airflow into the heat dissipation space.

[0015] According to some embodiments of the present invention, in the axial direction of the first impeller, the end of the coil bracket extends beyond the heating element in the direction toward the air inlet side of the first impeller.

[0016] According to some embodiments of the present invention, the first impeller includes a first part and a second part, the first part being located inside the heating element, the second part being located outside the heating element, and the second part supplying air toward the inner wall of the coil support.

[0017] According to some embodiments of the present invention, the second part is provided with a first clearance space; the heating and cooling machine further includes a first power module, the first power module being electrically connected to at least the electromagnetic coil, and at least a portion of the first power module being located within the first clearance space.

[0018] According to some embodiments of the present invention, the portion of the coil support extending beyond the first impeller is provided with a second clearance space to avoid the first power module.

[0019] According to some embodiments of the present invention, the first power module includes a circuit board and an electronic control element disposed on the circuit board, at least a portion of the circuit board being located in the first clearance space.

[0020] According to some embodiments of the present invention, the heating and cooling unit includes a housing, and the electromagnetic coil, the heating element, the first impeller, and the axial flow impeller are all disposed within the housing; the thickness direction of the circuit board is parallel to the axial direction of the first impeller, and in the radial direction of the first impeller, the surface of the circuit board located in the first clearance space and facing the first impeller is formed as an arc surface matching the first impeller, and / or, in the radial direction of the first impeller, the surface of the circuit board away from the first impeller matches the shape of the inner peripheral wall of the housing.

[0021] According to some embodiments of the present invention, the circuit board is formed as an annular plate or a fan-shaped annular plate in the circumferential direction of the first impeller.

[0022] According to some embodiments of the present invention, the heating and cooling unit further includes a shielding component, which is disposed on the side of the electromagnetic coil away from the heating element in the radial direction of the first impeller.

[0023] According to some embodiments of the present invention, the shielding component and the electromagnetic coil are spaced apart to define an airflow path.

[0024] According to some embodiments of the present invention, the shielding assembly includes a magnetic strip support and a shielding member. The magnetic strip support is sleeved on the outside of the electromagnetic coil to define the airflow channel. The shielding member is disposed on the outer peripheral wall of the magnetic strip support opposite to the airflow channel and is configured to shield the magnetic field.

[0025] According to some embodiments of the present invention, the heating and cooling unit further includes a bracket and a housing. The housing is provided with an air inlet and an air outlet. The electromagnetic coil, the heating element, the first impeller and the axial flow impeller are respectively disposed inside the housing. The heating and cooling unit is rotatably disposed on the bracket.

[0026] The second objective of this invention is to provide a heating and cooling system.

[0027] A heater / cooler includes: a heating element for heating air; a centrifugal fan, at least a portion of which is located inside the heating element to drive airflow through it; and an axial fan disposed outside the heating element and integrally formed with the centrifugal fan, the axial fan for supplying air toward the side of the heating element away from the centrifugal fan. The heater / cooler includes a warm air mode and a cold air mode. In the warm air mode, the heating element heats up, and the centrifugal fan and the axial fan are activated. In the cold air mode, the heating element is deactivated, and the centrifugal fan and the axial fan are activated.

[0028] According to the embodiments of the present invention, the heater / cooler features a centrifugal fan, with at least a portion of the fan positioned inside the heating element. This allows the centrifugal fan to direct airflow towards the inner wall of the heating element, improving heat dissipation efficiency. Furthermore, an axial fan is installed on the outer side of the heating element, driving air flow towards the outer wall, further enhancing heat dissipation and improving the overall heat dissipation effect. This improves the efficiency of the heater / cooler's hot air output and reduces the risk of localized overheating, thus enhancing the safety of the heater / cooler. The centrifugal fan and axial fan are integrated, reducing production costs and simplifying assembly. Additionally, the heater / cooler offers both a cold air mode and a warm air mode, allowing for customized air output based on user needs, enhancing functionality and user experience.

[0029] According to some embodiments of the present invention, the axial flow impeller includes a mounting base and a plurality of axial flow blades disposed on the mounting base. The mounting base is formed in an annular shape and connected to the centrifugal blades of the centrifugal impeller. A portion of the centrifugal blades extends into the mounting base.

[0030] According to some embodiments of the present invention, the centrifugal impeller includes a first part and a second part. The first part is located inside the heating element, and the second part is located outside the heating element and connected to the axial flow impeller. The second part supplies air to the side of the heating element away from the first part.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a partial exploded view of the cooling and heating unit described in this embodiment of the utility model;

[0034] Figure 2 This is a partial structural diagram of the cooling and heating unit described in an embodiment of the present utility model;

[0035] Figure 3 for Figure 2 Sectional view at AA;

[0036] Figure 4 This is a schematic diagram of the assembly of the first impeller and the axial flow impeller according to an embodiment of the present utility model;

[0037] Figure 5 This is an assembly diagram of the first impeller, axial flow impeller, heating element, and coil support described in an embodiment of the present utility model;

[0038] Figure 6 for Figure 5 Sectional view at BB;

[0039] Figure 7 Simulation analysis of the effect of different sp / Lb values ​​on the air output effect when the first impeller of this utility model is not connected to the axial flow impeller. Figure 1 ;

[0040] Figure 8 Simulation analysis of the effect of different sp / Lb values ​​on the air output effect when the first impeller of this utility model is not connected to the axial flow impeller. Figure 2 ;

[0041] Figure 9 Simulation analysis of the effect of different sp / Lb values ​​on the air output effect when the first impeller is not connected to the axial flow impeller in this embodiment of the invention. Figure 3 ;

[0042] Figure 10 This is a schematic diagram showing the assembly position of the first wind turbine and the first power module according to an embodiment of the present invention. Figure 1 ;

[0043] Figure 11 This is a schematic diagram showing the assembly position of the first wind turbine and the first power module according to an embodiment of the present invention. Figure 2 ;

[0044] Figure 12 for Figure 11 Sectional view at CC;

[0045] Figure 13 This is a schematic diagram of the structure of the first wind turbine according to an embodiment of the present invention;

[0046] Figure 14This is a schematic diagram of the structure of the shell described in an embodiment of the present utility model;

[0047] Figure 15 This is a schematic diagram of the heating element and coil support assembled inside the housing according to an embodiment of the present invention;

[0048] Figure 16 This is a schematic diagram of the structure of the heating and cooling unit described in an embodiment of the present invention.

[0049] Figure label:

[0050] 100 air conditioner / heater

[0051] Heat dissipation space 101, airflow channel 102,

[0052] Heat dissipation area 110, through hole 111,

[0053] Heating element 120

[0054] First windmill 130, Part 1 131

[0055] Part Two, Section 132, First Avoidance Space, Section 1321

[0056] Axial flow fan rotor 140, mounting base 141, axial flow blades 142

[0057] Coil support 150, winding protrusion 151, second clearance space 152

[0058] First power supply module 160, circuit board 161, electronic control component 162

[0059] 170mm shell

[0060] Air outlet mesh cover 171, first air outlet area 1711, second air outlet area 1712, first fixing ring 1713, second fixing ring 1714, third fixing ring 1715, first air guide rib 1716, second air guide rib 1717, receiving cavity 1718, through hole 1719.

[0061] Air inlet mesh cover 172

[0062] Magnetic strip support 181

[0063] First driving device 190

[0064] 210 bracket, 220 base. Detailed Implementation

[0065] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0066] In the description of this utility model, it should be understood that the terms "center," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0067] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0068] The following is for reference. Figures 1-16 Description of a heating and cooling unit 100 according to an embodiment of the present utility model.

[0069] Combination Figures 1 to 3 According to an embodiment of the present invention, a heating and cooling machine 100 includes an electromagnetic coil, a heating element 120, a first impeller 130, and an axial flow impeller 140. The electromagnetic coil can be energized to generate a magnetic field. The heating element 120 is configured to generate heat under the action of the magnetic field. The heating element 120 is formed into a ring structure. The electromagnetic coil is located on the outside of the heating element 120. At least a portion of the first impeller 130 is located on the inside of the heating element 120 to drive air to flow through the heating element 120. The axial flow impeller 140 is located on the outside of the heating element 120 and is correspondingly arranged with the electromagnetic coil to deliver air toward the electromagnetic coil.

[0070] Electromagnetic induction heating is achieved through the cooperation of the electromagnetic coil and the heating element 120. Electromagnetic induction heating has the advantages of uniform heating and rapid response, which helps to improve the heating efficiency of the heating element 120. At least a portion of the first impeller 130 extends into the heating element 120 so that the first impeller 130 can drive air to flow through the heating element 120, which helps to improve the heating effect of the heating element 120 on the air. Furthermore, since the heating element 120 is formed into a ring structure, it can guide the air driven by the first impeller 130, which helps to improve the efficiency of the hot air output by the heating and cooling unit 100.

[0071] Optionally, the first impeller 130 can be entirely located within the heating element 120. That is, in the radial direction projection of the first impeller 130, the orthographic projection surface of the first impeller 130 falls within the orthographic projection range of the heating element 120, which is beneficial to improving the effect of the first impeller 130 driving air to flow through the heating element 120. Alternatively, a portion of the first impeller 130 extends into the inner side of the heating element 120, and another portion is located on the outer side of the heating element 120. The portion of the first impeller 130 located on the outer side of the heating element 120 can drive air to flow on the outer side of the heating element 120, which facilitates air flow through the electromagnetic coil and thus facilitates heat dissipation of the electromagnetic coil.

[0072] It is understandable that the arrangement of the first impeller 130 and the heating element 120 can be determined according to actual production requirements, and no specific restrictions are made here.

[0073] By placing the electromagnetic coil on the outside of the heating element 120, it is beneficial to prevent the electromagnetic coil from affecting the airflow into the inside of the heating element 120, thereby improving the smoothness of airflow and further improving the efficiency of the hot air output of the heater 100.

[0074] Furthermore, considering that the electromagnetic coil also generates heat during operation, and that it may malfunction when its temperature is too high, causing the heating element 120 to fail to generate heat and thus affecting the normal operation of the heater 100, an axial flow fan 140 corresponding to the electromagnetic coil is provided on the outside of the heating element 120. This allows the axial flow fan 140 to drive air to flow towards the electromagnetic coil. When the air flows through the electromagnetic coil, it can dissipate heat, which helps prevent the electromagnetic coil from overheating. In addition, the airflow speed and volume output by the axial flow fan 140 are large, which helps to further improve the heat dissipation effect of the electromagnetic coil, thereby helping to ensure the normal operation of the electromagnetic coil and, consequently, the normal operation of the heater 100.

[0075] The heater / cooler 100 includes a warm air mode and a cool air mode. In the warm air mode, the electromagnetic coil is energized and the heating element 120 heats up. The first impeller 130 and the axial flow impeller 140 are turned on. After the electromagnetic coil is energized, the heating element 120 can generate heat under the action of the magnetic field. The first impeller 130 and the axial flow impeller 140 operate simultaneously to drive airflow. The air simultaneously dissipates heat from the heating element 120 and the electromagnetic coil. After the air dissipates heat from the heating element 120 and the electromagnetic coil, their temperature rises. The heater / cooler 100 can output hot air to heat the low-temperature environment.

[0076] In cold air mode, the electromagnetic coil is de-energized and at least the first impeller 130 is running. After the electromagnetic coil is de-energized, the heating element 120 does not generate heat, which can also be understood as the heating element 120 not working. At this time, the first impeller 130 can be driven alone, and the heater / cooler 100 outputs pure cold air, enabling the heater / cooler 100 to cool down high-temperature environments. Driving the first impeller 130 alone helps reduce the energy consumption of the heater / cooler 100, thus reducing the user's operating costs. Alternatively, after the electromagnetic coil is de-energized, the first impeller 130 and the axial flow impeller 140 can be driven simultaneously. In this case, the heater / cooler 100 can output pure cold air, and the wind speed is greater than when the first impeller 130 is driven alone. This helps improve the efficiency of the heater / cooler 100 in cooling high-temperature environments and improves the user experience.

[0077] In related technologies, the electromagnetic coil in the heating and cooling machine has poor heat dissipation and is prone to overheating, which can easily lead to the electromagnetic coil failing to work properly. When the electromagnetic coil malfunctions, the heating element will not be able to generate heat, thus affecting the normal operation of the heating and cooling machine.

[0078] This application incorporates an axial flow fan 140 corresponding to the electromagnetic coil. The axial flow fan 140 drives air to flow towards the electromagnetic coil. When the air flows through the electromagnetic coil, it dissipates heat, preventing overheating. Furthermore, the large airflow speed and volume output by the axial flow fan 140 enhance the heat dissipation effect of the electromagnetic coil, thus ensuring its normal operation and consequently the normal operation of the heating / cooling unit 100. The heating / cooling unit 100 also features both cold and warm air modes, allowing it to provide appropriate air output according to user needs, thereby improving its functionality and enhancing the user experience.

[0079] In some embodiments, the cooling mode of the heater 100 needs to ensure that the air speed output by the heater 100 is high enough. That is, the cooling mode setting of the heater 100 can match the setting of the heating mode, and the maximum air speed in the cooling mode is greater than the maximum air speed in the heating mode. For example, the cooling mode of the heater 100 can have 8 settings, and the heating mode can have 3 settings. When the heater 100 switches directly from the 3rd setting in the cooling mode to the heating mode, the heater 100 operates at the maximum setting (i.e., the third setting) in the heating mode, and the heater 100 outputs the hot air most efficiently.

[0080] In some specific embodiments, the operating level of the heating / cooling unit 100 can be switched by adjusting the operating status of the first impeller 130 and the axial flow impeller 140. For example, the operating level of the heating / cooling unit 100 can be switched by adjusting whether the axial flow impeller 140 is on or off; or the operating level of the heating / cooling unit 100 can be switched by adjusting the rotational speed of the first impeller 130 and the axial flow impeller 140. In other embodiments, the switching of the heating / cooling unit 100's operating level can also be achieved through other methods, and this application does not limit this. Figures 1 to 4 In some embodiments of this utility model, the axial flow impeller 140 is fixed to the first impeller 130 so as to rotate synchronously with the first impeller 130.

[0081] By fixing the axial flow fan 140 to the first fan 130, the axial flow fan 140 and the first fan 130 can share the first drive device 190, which helps to simplify the structure of the refrigeration and heating unit 100, reduce the production cost of the refrigeration and heating unit 100, simplify the assembly steps of the refrigeration and heating unit 100, and facilitate the miniaturization design of the refrigeration and heating unit 100.

[0082] The first driving device 190 can be configured as a motor. Optionally, the first driving device 190 can be connected to the axial flow fan 140, and the first driving device 190 drives the axial flow fan 140 to rotate, and the axial flow fan 140 drives the first fan 130 to rotate synchronously; or the first driving device 190 can be connected to the first fan 130, and the first driving device 190 drives the first fan 130 to rotate, and the first fan 130 drives the axial flow fan 140 to rotate synchronously.

[0083] In some embodiments, the first impeller 130 and the axial flow impeller 140 can be fixedly connected by ultrasonic welding; in other embodiments, the first impeller 130 and the axial flow impeller 140 can be fixedly connected by a snap-fit ​​structure; it is understood that the fixing method of the first impeller 130 and the axial flow impeller 140 is not specifically limited here, as long as it is ensured that the first impeller 130 and the axial flow impeller 140 can be fixedly connected and rotate synchronously.

[0084] In some other embodiments of this utility model, the first impeller 130 and the axial flow impeller 140 are separately arranged, and the first impeller 130 and the axial flow impeller 140 are respectively provided with driving devices so that the first impeller 130 and the axial flow impeller 140 can rotate separately. This makes it convenient to adjust the start-up and stop or the corresponding speed of the first impeller 130 and the axial flow impeller 140 according to the heat dissipation requirements of the heat-generating element 120 and the electromagnetic coil, which is beneficial to improving the heat dissipation effect of the heat-generating element 120 and the electromagnetic coil.

[0085] Combination Figure 2 and Figure 3 as well as Figure 5 and Figure 6 In some embodiments of this utility model, the first impeller 130 includes a first part 131 and a second part 132, the first part 131 being located inside the heating element 120 and the second part 132 being located outside the heating element 120.

[0086] In other words, the heating element 120 extends circumferentially along the first part 131 so that the first part 131 can supply air to the inner wall of the heating element 120, thereby facilitating the heat dissipation of the heating element 120. Considering that the electromagnetic coil also needs to dissipate heat, the second part 132 is located outside the heating element 120 so that at least part of the air discharged from the second part 132 can flow outside the heating element 120, thereby facilitating the air to flow through the electromagnetic coil and dissipate heat from the electromagnetic coil, thereby improving the heat dissipation effect of the electromagnetic coil.

[0087] Furthermore, combined Figure 3 and Figure 6 The axial flow fan 140 is fixed to the axial end of the second part 132 so that the axial flow fan 140 can be arranged on the outside of the heating element 120, so that the axial flow fan 140 is correspondingly arranged with the electromagnetic coil located on the outside of the heating element 120, thereby facilitating the axial flow fan 140 to send air to the electromagnetic coil, and thus facilitating the heat dissipation of the electromagnetic coil.

[0088] In a further embodiment of the present invention, the axial flow fan 140 is fixed to the end of the second part 132 away from the first part 131, which helps to prevent the axial flow fan 140 and the heating element 120 from interfering with each other, prevents the heating element 120 from hindering the rotation of the axial flow fan 140, and improves the assembly convenience of the axial flow fan 140 and the heating element 120.

[0089] Combination Figure 5 and Figure 6 In some embodiments of this utility model, the axial flow impeller 140 includes a mounting base 141 and a plurality of axial flow blades 142 disposed on the mounting base 141.

[0090] For example, multiple axial flow blades 142 can be arranged at intervals along the circumferential direction of the mounting base 141. The mounting base 141 can serve as a mounting carrier for multiple axial flow blades 142. By fixing the mounting base 141 to the first impeller 130, the axial flow impeller 140 can be fixedly connected to the first impeller 130 as a whole, which is beneficial to improving the assembly convenience of the axial flow impeller 140 and the first impeller 130.

[0091] Furthermore, combined Figure 5 and Figure 6 The maximum distance between any two points of the mounting base 141 is Di, and the outer diameter of the axial flow blade 142 is Do. That is, the outer diameter of the ring formed by multiple axial flow blades 142 arranged at intervals along the circumferential direction of the mounting base 141 is defined as Do. The axial flow impeller 140 is configured such that the ratio of Di / Do is in the range of 0.5 to 0.8, which is beneficial to ensuring the air supply effect of the axial flow impeller 140, thereby helping to ensure the heat dissipation effect of the electromagnetic coil.

[0092] When Di / Do < 0.5, the space on the mounting base 141 for installing axial fan blades may be insufficient, resulting in a small number of axial fan blades and thus poor air delivery performance of the axial fan wheel 140. When Di / Do > 0.8, the size of the axial fan blades 142 may be too small, resulting in poor air delivery performance of the axial fan wheel 140.

[0093] Combination Figures 1 to 3 In some embodiments of this utility model, the first impeller 130 is a centrifugal impeller to deliver air toward the inner wall of the heating element 120.

[0094] The centrifugal impeller has an axial air intake and a radial air outlet. By configuring the first impeller 130 as a centrifugal impeller, the portion of the first impeller 130 located inside the heating element 120 (i.e., the first part 131) blows air toward the inner wall of the heating element 120. This helps to improve the heat dissipation efficiency of the air discharged from the first part 131 to the heating element 120, thereby reducing the risk of overheating of the heating element 120 and improving the efficiency of the hot air output by the heating and cooling unit 100.

[0095] In some embodiments, the first impeller 130 is configured as a centrifugal impeller, and the second part 132 of the first impeller 130 is located outside the heating element 120. The air discharged from the second part 132 can flow along the radial direction of the first impeller 130, which facilitates the flow of the air discharged from the second part 132 to the electromagnetic coil, so that the first impeller 130 can also play a role in dissipating heat from the electromagnetic coil, which is beneficial to improving the heat dissipation effect of the electromagnetic coil.

[0096] Combination Figure 5 and Figure 6In some embodiments of this utility model, the axial flow impeller 140 includes a mounting base 141 and a plurality of axial flow blades 142 disposed on the mounting base 141.

[0097] For example, multiple axial flow blades 142 can be arranged at intervals along the circumferential direction of the mounting base 141. The mounting base 141 can serve as a mounting carrier for multiple axial flow blades 142. By fixing the mounting base 141 to the first impeller 130, the axial flow impeller 140 can be fixedly connected to the first impeller 130 as a whole, which is beneficial to improving the assembly convenience of the axial flow impeller 140 and the first impeller 130.

[0098] Combination Figure 5 and Figure 6 The maximum diameter of the centrifugal blades of the first impeller 130 is Dc, and the maximum distance between any two points of the mounting base 141 is Di. The ratio of Di / Dc is in the range of 0.8 to 1.4, which helps to prevent the first impeller 130 from being blocked by the mounting base 141, thus affecting the air intake effect of the first impeller 130 and improving the air volume of the first impeller 130. At the same time, it can prevent the axial flow impeller 140 from being too large due to the size of the mounting base 141, thus preventing the axial flow impeller 140 from occupying too much installation space.

[0099] When Di / Dc < 0.8, the size of the mounting base 141 is too small, which may cause the mounting base 141 to block the air inlet of the first impeller 130, thereby affecting the air intake effect of the first impeller 130 and resulting in a small air output of the first impeller 130. When Di / Dc > 1.4, the size of the mounting base 141 is too large, which results in a large overall volume of the axial flow impeller 140, resulting in a large space required to arrange the axial flow impeller 140, which may lead to an increase in the overall volume of the heating and cooling unit 100, which is not conducive to the miniaturization design of the heating and cooling unit 100.

[0100] Combination Figure 3 and Figure 6 In some embodiments of this utility model, the mounting base 141 is formed as an annular shape, and the mounting base 141 is connected to the centrifugal blades of the first impeller 130. A portion of the centrifugal blades extends into the mounting base 141. That is, in the radial projection plane of the first impeller 130, the orthographic projection plane of the centrifugal blades and the orthographic projection plane of the mounting base 141 have an overlapping area. The mounting base 141 can play a guiding role, which is beneficial to improving the effect of airflow to the first impeller 130, thereby improving the air intake and exhaust effect of the first impeller 130.

[0101] In some embodiments, the length of the overlapping area between the orthographic projection surface of the centrifugal blade and the orthographic projection surface of the mounting base 141 in the axial direction of the first impeller 130 can be 3 mm; in other embodiments, the length of the overlapping area between the orthographic projection surface of the centrifugal blade and the orthographic projection surface of the mounting base 141 in the axial direction of the first impeller 130 can be 4 mm; it is understood that the overlap length between the centrifugal blade and the mounting base 141 can be determined according to actual production requirements, and is not specifically limited here.

[0102] Reference Figure 6 In some embodiments of this utility model, the overlap length of the heating element 120 and the centrifugal blades of the first impeller 130 along the axial direction is sp, and the axial length of the centrifugal blades of the first impeller 130 is Lb. The heating and cooling unit 100 is configured to satisfy: 0.3≤sp / Lb<1.

[0103] Depend on Figure 7 , Figure 8 and Figure 9 It can be seen that when the value of sp / Lb is equal to 1, the centrifugal blades of the first impeller 130 are completely located inside the heating element 120. The air blown out by the first impeller 130 can only flow inside the heating element 120, which affects the air volume of the heating and cooling unit 100. Furthermore, the heat dissipation efficiency of the heating element 120 is low, which affects the overall heating effect of the heating and cooling unit 100.

[0104] Combination Figure 3 , Figure 8 and Figure 9 When the value of sp / Lb is less than 1, at least a portion of the centrifugal blades of the first impeller 130 are located outside the heating element 120 in the axial direction of the first impeller 130, so that the air blown out by the first impeller 130 can flow to the outside of the heating element 120, thereby allowing a portion of the air blown out by the first impeller 130 to exchange heat with the inner wall of the heating element 120, and another portion of the air blown out by the first impeller 130 to exchange heat with the electromagnetic coil and the outer wall of the heating element 120, which is beneficial to improving the heating speed of the air, thereby improving the effect of the hot air output by the heating and cooling unit 100.

[0105] However, the value of sp / Lb cannot be too small. If the length of the heating element 120 remains unchanged in the axial direction of the first impeller 130, and the value of sp / Lb is less than 0.3, the overlap length between the heating element 120 and the centrifugal blades of the first impeller 130 will be too short, the overall length of the heat exchanger 100 will be too long, the wind resistance will be increased, and the air outlet speed of the heat exchanger 100 will be affected.

[0106] Combination Figures 7 to 9When the sp / Lb value is 0.2 and the heater / cooler 100 is in heating mode, the maximum wind speed at the center of the air blown out by the heater / cooler 100 at a distance of 0.5m from the air outlet of the heater / cooler 100 is 2.02m / s, which is much lower than the wind speed when the sp / Lb value is between 0.3 and 1. When the sp / Lb value is 0.2 and the heater / cooler 100 is in cooling mode, the maximum wind speed of the cooling air is 3.59m / s, which is also much lower than the wind speed when the sp / Lb value is between 0.3 and 1.

[0107] If the value of sp / Lb is less than 0.3, the length of the heating element 120 is reduced in order to decrease the overall length of the heater 100. Although this improves the wind resistance, it also results in a small contact area between the air and the heating element 120, affecting the heating effect of the air. Therefore, in this embodiment, the value of sp / Lb is not less than 0.3. This reduces the overall length of the heater 100, decreases wind resistance, and ensures sufficient contact area between the air and the heating element 120, thus ensuring the heating effect of the air and improving the efficiency of the heater 100 in outputting hot air.

[0108] Therefore, by making the sp / Lb value range from 0.3 to 1, sufficient contact area is ensured between the air and the heating element 120, thus ensuring the heating effect of the air. At the same time, it helps to reduce wind resistance and effectively improve the efficiency of the hot air output by the heating and cooling unit 100.

[0109] In a further embodiment of this utility model, the heating / cooling unit 100 further satisfies: 0.3≤sp≤0.95.

[0110] When the value of sp / Lb is greater than 0.95, the portion of the centrifugal blades of the first impeller 130 located outside the heating element 120 is too small, resulting in less air being blown from the first impeller 130 to the outside of the heating element 120. This leads to poor heat dissipation from the outer wall of the heating element 120, thus affecting the heating effect of the heater 100.

[0111] When sp / Lb≤0.95, the first impeller 130 can drive a sufficient amount of air to the outside of the heating element 120, thereby improving the heat dissipation efficiency of the outer wall of the heating element 120 and thus improving the heating effect of the heating and cooling unit 100.

[0112] In this embodiment, 0.3≤sp / Lb≤0.95 ensures that there is sufficient air on the outside of the heating element 120, thus ensuring the overall heat dissipation efficiency of the heating element 120. At the same time, it also improves the air outlet speed of the heating and cooling machine 100, so that the heating and cooling machine 100 has a better heating effect.

[0113] In some specific embodiments, the value of sp / Lb is any one of the points 0.3, 0.4, 0.6, 0.8, and 0.95, or a range between any two.

[0114] like Figure 6 As shown, in some embodiments of this utility model, the axial length of the heating element 120 in the axial direction of the first impeller 130 is Lt 1, and the cooling and heating unit 100 satisfies the following: the value of Lt1 / Lb is in the range of 0.5 to 1.1.

[0115] If the Lt 1 / Lb value is less than 0.5, the heating element 120 will be too short, reducing the contact area between the heating element 120 and the air, thus affecting the heating effect of the air. If the Lt 1 / Lb value is greater than 1.1, since at least part of the first impeller 130 is located outside the heating element 120, the overall length of the heating and cooling unit 100 will be too long, increasing the wind resistance and affecting the air outlet speed.

[0116] This application limits the Lt1 / Lb value to a range of 0.5 to 1.1, which ensures both the heating effect on the air and the reduction of wind resistance, thus guaranteeing the air outlet speed.

[0117] In some specific embodiments, the Lt 1 / Lb value can be a point value of any one of 0.5, 0.6, 0.7, 0.9, 1.1 or a range value between any two.

[0118] Reference Figure 6 In some embodiments of this utility model, the axial length of the electromagnetic coil is Lx1, the axial length of the heating element 120 is Lt1, and the cooling / heating unit 100 satisfies the value of Lt1 / Lx1 in the range of 1.1 to 1.3.

[0119] If the Lt1 / Lx1 value is greater than 1.3, it indicates that the arrangement length Lx1 of the electromagnetic coil is too small, the area heated by the heating element 120 is too short, the air heating speed is slow, and the heating effect is affected. If the Lt1 / Lx1 value is less than 1.1, it indicates that the arrangement length Lx1 of the electromagnetic coil is too large, the area heated by the heating element 120 is too long, the air cannot carry away the heat from the heating element 120 in time, the energy loss is large, and the temperature of the heating element 120 is too high, which can easily cause local overheating of the heater 100, affecting the safety of the heater 100. Therefore, in this embodiment, the range of the Lt1 / Lx1 value is 1.1 to 1.3.

[0120] In this embodiment, the arrangement length of the electromagnetic coil is further limited to ensure the heating effect of the heating element 120, that is, to ensure the heating effect of the heating element 120 on the air, and to improve the energy utilization rate.

[0121] In some specific embodiments, the Lt1 / Lx1 value can be a point value of any one of 1.1, 1.2, 1.25, 1.3 or a range value between any two.

[0122] Combination Figure 3 and Figure 6 In some embodiments of this utility model, the heating and cooling machine 100 further includes a coil support 150, which is formed into a ring structure and is sleeved on the heating element 120. An electromagnetic coil is wound around the coil support 150, and a heat dissipation space 101 is provided between the coil support 150 and the heating element 120. The first impeller 130 is configured to guide airflow to the heat dissipation space 101.

[0123] For example, the coil support 150 is formed into a ring structure so that the coil support 150 is sleeved on the heating element 120, thereby facilitating the arrangement of the electromagnetic coil on the radial outer side of the heating element 120. In other words, the electromagnetic coil and the heating element 120 can be opposite each other in the radial direction, which is beneficial to improving the effect of the heating element 120 in generating heat under the action of the magnetic field, thereby improving the heating efficiency of the heating element 120 in heating the air.

[0124] The coil support 150 and the heating element 120 can be arranged radially at intervals, so that a heat dissipation space 101 can be defined between the heating element 120 and the coil support 150. Part of the air discharged by the first impeller 130 can flow into the inner side of the heating element 120 to dissipate heat from the inner wall of the heating element 120. At the same time, another part of the air discharged by the first impeller 130 can flow into the outer side of the heating element 120 to dissipate heat from the outer wall of the heating element 120. This helps to improve the heat dissipation effect of the heating element 120, improve the heating efficiency of the heating element 120 to the air, reduce the risk of local overheating of the heating element 120, and by allowing the air to dissipate heat from the outer wall of the heating element 120, it helps to reduce the impact of the heat generated by the heating element 120 on the electromagnetic coil and prevent the electromagnetic coil from overheating. Thus, the normal operation of the heating and cooling machine 100 can be guaranteed, the safety of the heating and cooling machine 100 can be guaranteed, and the efficiency of the heating and cooling machine 100 in outputting hot air can be improved.

[0125] It should be noted that "the inner wall of the heating element 120" refers to the side surface of the heating element 120 that is opposite to the first impeller 130 in the radial direction, and "the outer wall of the heating element 120" refers to the side surface of the heating element 120 that is opposite to the coil support 150 in the radial direction.

[0126] Combination Figure 1 and Figure 6 In a further embodiment of the present invention, a plurality of winding protrusions 151 are provided on the side of the coil support 150 away from the heating element 120. The plurality of winding protrusions 151 are spaced apart in the axial direction of the coil support 150. A winding groove for placing an electromagnetic coil is formed between two adjacent winding protrusions 151. The electromagnetic coil can be placed on the coil support 150 through the plurality of winding grooves, so as to facilitate the positioning and installation of the electromagnetic coil and at the same time help to ensure the assembly stability of the electromagnetic coil.

[0127] Combination Figure 2 , Figure 3 , Figure 5 and Figure 6 In some embodiments of this utility model, in the axial direction of the first impeller 130, the end of the coil support 150 extends beyond the heating element 120 in the direction toward the air inlet side of the first impeller 130. The portion of the coil support 150 extending beyond the heating element 120 can guide the airflow, facilitating the airflow into the heat dissipation space 101. This is beneficial to improving the heat dissipation effect of the air on the outer wall of the heating element 120, reducing the risk of local overheating of the heating element 120, and reducing the impact of the heat generated by the heating element 120 on the electromagnetic coil. At the same time, it is beneficial to improve the efficiency of the hot air output of the heater 100.

[0128] Combination Figure 3 and Figure 6 In some embodiments, the first impeller 130 includes a first part 131 and a second part 132. The first part 131 is located inside the heating element 120, and the second part 132 is located outside the heating element 120. The second part 132 blows air toward the inner wall of the coil support 150.

[0129] For example, in the axial direction of the first impeller 130, the second part 132 is located closer to the air inlet of the heater 100 than the first part 131. The end of the coil bracket 150 extends towards the second part 132. Since the second part 132 is located outside the heating element 120, some of the air discharged from the second part 132 can flow radially towards the inner wall of the coil bracket 150 outside the heating element 120. The coil bracket 150 can guide some of the air discharged from the second part 132 into the heat dissipation space 101, thereby improving the efficiency of air flowing into the heat dissipation space 101 and thus further improving the heat dissipation efficiency of the outer wall of the heating element 120.

[0130] Combination Figures 1 to 3 In some embodiments of this utility model, the second part 132 is located on the air inlet side of the heating element 120 to ensure that the air flow direction driven by the second part 132 is consistent with the air inlet and outlet direction of the heater 100, which is beneficial to improving the efficiency of the airflow output by the heater 100.

[0131] like Figure 13 As shown, in some embodiments of this utility model, the outer diameter of the centrifugal fan blade of the second part 132 is larger than the outer diameter of the centrifugal fan blade of the first part 131.

[0132] Since the first part 131 is located inside the heating element 120 and the second part 132 is located outside the heating element 120, and the heat dissipation space 101 is located radially outside the heating element 120, by making the outer diameter of the centrifugal fan blade of the second part 132 larger than the outer diameter of the centrifugal fan blade of the first part 131, the air discharged from the second part 132 can flow into the heat dissipation space 101, so that the first impeller 130 can also play a role in dissipating heat from the electromagnetic coil, thereby improving the heat dissipation effect of the electromagnetic coil.

[0133] Therefore, by differentiating the outer diameters of the centrifugal blades of the first part 131 and the centrifugal blades of the second part 132, the heat dissipation effect of the first impeller 130 on the electromagnetic coil is optimized, which helps to reduce the risk of overheating of the electromagnetic coil and improves the operational stability of the heater 100.

[0134] Combination Figure 3 , Figure 6 as well as Figures 10 to 11 In some embodiments of this utility model, the second part 132 is provided with a first clearance space 1321; the heating and cooling machine 100 also includes a first power module 160, which is at least electrically connected to an electromagnetic coil, and at least a portion of the first power module 160 is located within the first clearance space 1321.

[0135] For example, the first power module 160 is electrically connected to the electromagnetic coil, and the first power module 160 can supply current to the electromagnetic coil. When the electromagnetic coil is energized, it can generate a magnetic field. The heating element 120 heats up under the action of the magnetic field to heat the air, thereby realizing the function of the air conditioner 100 outputting hot air.

[0136] Furthermore, at least a portion of the first power module 160 is disposed within the first clearance space 1321 to achieve integration of the first power module 160 and the first impeller 130, making the structure of the first power module 160 and the first impeller 130 compact, thereby helping to reduce the volume of the heating and cooling unit 100 and facilitating the miniaturization design of the heating and cooling unit 100.

[0137] Meanwhile, since the first clearance space 1321 is set on the second part 132, the first power module 160 can be set outside the heating element 120, which facilitates the installation of the first power module 160 and reduces the impact of the heat generated by the heating element 120 on the first power module 160, thereby helping to reduce the risk of the first power module 160 overheating.

[0138] Optionally, the first power module 160 may be entirely disposed within the first clearance space 1321, or the portion of the first power module 160 that is radially close to the first impeller 130 may be disposed within the clearance space. It is understood that the portion of the first power module 160 located within the first clearance space 1321 may be determined according to actual production requirements, and no specific limitation is made here.

[0139] Combination Figure 3 , Figure 6 as well as Figures 10 to 11 In some further embodiments, the first impeller 130 is a centrifugal impeller, the first clearance space 1321 is located on the outer peripheral wall of the second part 132, and the first power module 160 is located at the air outlet end of the centrifugal impeller.

[0140] The centrifugal impeller has an axial air intake and a radial air outlet. The first clearance space 1321 is located on the outer peripheral wall of the second part 132 and is recessed in the radial direction of the second part 132. That is, the first clearance space 1321 is located at the air outlet end of the second part 132. At least a portion of the first power module 160 is located within the first clearance space 1321, so that the first power module 160 can be arranged at the air outlet end of the centrifugal impeller. This facilitates the air discharged from the second part 132 to flow through the first power module 160, thereby facilitating the heat dissipation of the first power module 160 and the assembly of the first power module 160, which is beneficial to improving the production and assembly efficiency of the refrigeration unit 100.

[0141] Combination Figures 10 to 12 In a further embodiment of the present invention, in the radial direction of the first impeller 130, the radial outer ends of some centrifugal blades of the first impeller 130 are recessed toward the rotation axis of the first impeller 130 to define and form a first clearance space 1321.

[0142] Specifically, at least a portion of the first clearance space 1321 is located in the air outlet area of ​​the centrifugal blades. In the radial direction of the first impeller 130, the radial dimension of the portion of the centrifugal blades directly opposite the first clearance space 1321 is smaller than the radial dimension of the centrifugal blades that are offset from the clearance space. Thus, by designing the centrifugal blades of the first impeller 130, a first clearance space 1321 recessed in the radial direction of the first impeller 130 can be formed on the first impeller 130, which facilitates the arrangement of the first power module 160 in the first clearance space 1321, realizing the integration of the first power module 160 and the first impeller 130, and facilitating the dissipation of the first power module 160 by the air discharged from the first impeller 130.

[0143] Combination Figure 10 and Figure 12In some embodiments of this utility model, the portion of the first power module 160 located within the first clearance space 1321 is spaced apart from the inner wall of the first clearance space 1321.

[0144] Since the first clearance space 1321 is located on the second part 132, and the inner wall of the first clearance space 1321 is part of the first impeller 130, in order to prevent the first power module 160 from contacting the inner wall of the first clearance space 1321 and causing the first power module 160 to interfere with the operation of the first impeller 130, it is necessary to set a gap between the part of the first power module 160 located in the first clearance space 1321 and the inner wall of the first clearance space 1321. This reduces the risk of the first power module 160 interfering with the operation of the first impeller 130, improves the smoothness of the operation of the first impeller 130, and thus helps to ensure the efficiency of the first impeller 130 in driving airflow.

[0145] Reference Figure 10 In a further embodiment of the present invention, in the axial direction of the first impeller 130, the distance between any side of the portion of the first power module 160 located in the first clearance space 1321 and the first clearance space 1321 is a first distance S1, where S1 > 8 mm.

[0146] Considering that the first power module 160 is prone to move in the axial direction of the first impeller 130 when the heater / cooler 100 shakes, by making S1 > 8mm, sufficient movement space is reserved for the first power module 160 in the axial direction of the first impeller 130. This helps to reduce the risk of the first power module 160 contacting the inner wall of the first clearance space 1321, thereby further reducing the risk of the first power module 160 interfering with the operation of the first impeller 130, improving the smoothness of the operation of the first impeller 130, and thus helping to improve the stability of the airflow output by the heater / cooler 100.

[0147] Reference Figure 10 In some embodiments of this utility model, in the radial direction of the first impeller 130, the distance between the portion of the first power module 160 located in the first clearance space 1321 and the inner wall of the clearance space is a second distance S2, where S2 > 8 mm.

[0148] Considering that the first power module 160 may move in the radial direction of the first impeller 130 when the heater / cooler 100 shakes, by making S2 > 8mm, sufficient movement space is reserved for the first power module 160 in the radial direction of the first impeller 130. This helps to reduce the risk of the first power module 160 contacting the first clearance space 1321, thereby further reducing the risk of the first power module 160 interfering with the operation of the first impeller 130, improving the smoothness of the operation of the first impeller 130, and thus helping to improve the stability of the airflow output by the heater / cooler 100.

[0149] Combination Figures 10 to 11 In some embodiments of the present invention, the first power module 160 includes a circuit board 161 and an electronic control element 162 disposed on the circuit board 161, and at least a portion of the circuit board 161 is located in the first clearance space 1321.

[0150] The circuit board 161 serves as the mounting carrier for the electronic control component 162. The electronic control component 162 is arranged on the circuit board 161 and electrically connected to the circuit board 161. By setting at least a portion of the circuit board 161 within the first clearance space 1321, the structural compactness of the first power module 160 and the first fan wheel 130 is improved, and the space occupied by the circuit board 161 within the heat and cooler 100 is reduced, which is conducive to realizing the miniaturization design of the heat and cooler 100.

[0151] Optionally, when there is sufficient space on the second part 132 to accommodate the first clearance space 1321, that is, when the size of the first clearance space 1321 is sufficient, the entire circuit board 161 can be placed within the first clearance space 1321. When the size of the first clearance space 1321 is insufficient to accommodate the entire circuit board 161, the portion of the circuit board 161 closest to the first impeller 130 can be placed within the first clearance space 1321. The specific portion of the circuit board 161 located within the first clearance space 1321 can be determined according to actual production requirements and is not specifically limited here.

[0152] It should be noted that the electronic control component 162 may include power devices (IGBTs and bridge rectifiers), capacitors, inductors, and transformers, etc.

[0153] Combination Figures 1 to 3In some embodiments of this utility model, the heating and cooling unit 100 includes a housing 170, and an electromagnetic coil, a heating element 120, a first impeller 130, and an axial flow impeller 140 are all disposed inside the housing 170. An air inlet and an air outlet are formed on the housing 170. Air can enter the housing 170 through the air inlet, and the air entering the housing 170 can dissipate heat from the heating element 120 and other components. The dissipated air can flow out from the housing 170 through the air outlet, so as to realize the function of the heating and cooling unit 100 outputting hot air. In addition, the housing 170 can provide positioning and support for the electromagnetic coil, the heating element 120, the first impeller 130, and the axial flow impeller 140, which is beneficial to improving the assembly reliability of the internal components of the housing 170. Furthermore, the housing 170 can protect the internal components, which is beneficial to reducing the risk of damage to the heating and cooling unit 100.

[0154] Combination Figure 3 , Figure 10 , Figure 11 and Figure 12 In some embodiments, the thickness direction of the circuit board 161 is parallel to the axial direction of the first impeller 130. That is, the first power module 160 can be vertically inserted into the first clearance space 1321 in a direction perpendicular to the rotation axis of the first impeller 130. This helps to reduce the size of the first clearance space 1321 in the axial direction of the first impeller 130, thereby reducing the space occupied by the first clearance space 1321 in the axial direction of the first impeller 130. This, in turn, helps to reduce the impact of setting the first clearance space 1321 on the air outlet efficiency of the first impeller 130.

[0155] Combination Figure 10 and Figure 11 In some embodiments, in the radial direction of the first impeller 130, the surface of the circuit board 161 located within the first clearance space 1321 and facing the first impeller 130 is formed as an arc surface that matches the first impeller 130.

[0156] For example, the first clearance space 1321 is provided on the outer peripheral wall of the first impeller 130, and the first clearance space 1321 extends along the circumferential direction of the first impeller 130. In the radial direction of the first impeller 130, the side surface of the circuit board 161 opposite to the first impeller 130 is formed into an arc-shaped surface with the same shape as the outer peripheral wall of the first impeller 130, so as to facilitate the arrangement of the circuit board 161 in the first clearance space 1321, which is beneficial to improve the effect of saving the space required to arrange the circuit board 161.

[0157] It should be noted that "the outer peripheral wall of the first impeller 130" refers to the side wall of the first impeller 130 opposite to the housing 170 in the radial direction.

[0158] Combination Figure 10 and Figure 11 In some embodiments, in the radial direction of the first impeller 130, the surface of the circuit board 161 away from the first impeller 130 matches the shape of the inner peripheral wall of the housing 170.

[0159] It should be noted that "the inner peripheral wall of the housing 170" refers to the side wall of the housing 170 opposite to the first impeller 130 in the radial direction of the first impeller 130.

[0160] For example, the housing 170 can be formed in a cylindrical shape, and correspondingly, the inner peripheral wall of the housing 170 is an arc-shaped wall. In the radial direction of the first impeller 130, the surface of the circuit board 161 opposite to the housing 170 is formed in an arc shape with the same shape as the inner peripheral wall of the housing 170, so as to achieve the shape matching between the surface of the circuit board 161 away from the first impeller 130 and the inner peripheral wall of the housing 170. This is beneficial to increase the area of ​​the circuit board 161 while improving the effect of saving the space required to arrange the circuit board 161.

[0161] Optionally, the surface of the circuit board 161 located within the first clearance space 1321 and facing the first impeller 130 can be individually formed as an arc surface matching the first impeller 130; the surface of the circuit board 161 away from the first impeller 130 can be individually matched with the shape of the inner peripheral wall of the housing 170; or, the surface of the circuit board 161 located within the first clearance space 1321 and facing the first impeller 130 can be formed as an arc surface matching the first impeller 130, while the surface of the circuit board 161 away from the first impeller 130 can be matched with the shape of the inner peripheral wall of the housing 170. The specific shape of the circuit board 161 can be determined according to actual production requirements and is not specifically limited here.

[0162] Combination Figure 10 and Figure 11 In some embodiments of this utility model, the circuit board 161 is formed as an annular plate or a fan-shaped annular plate in the circumferential direction of the first impeller 130.

[0163] For example, the circuit board 161 can be constructed as a fan-shaped annular plate to reduce the space required to arrange the circuit board 161. In the radial direction of the first impeller 130, the side surface of the circuit board 161 opposite to the first impeller 130 is formed as an arc surface that matches the first impeller 130. The side surface of the circuit board 161 opposite to the housing 170 matches the inner peripheral wall of the housing 170, so as to increase the area of ​​the circuit board 161, ensuring that the circuit board 161 can provide mounting space for the arch of the electronic control element 162, while saving the space required to arrange the circuit board 161, thereby facilitating the miniaturization design of the air conditioner 100.

[0164] In other embodiments, the circuit board 161 may be formed as an annular plate surrounding the first impeller 130 in the circumferential direction, so as to increase the area of ​​the circuit board 161 and ensure that the circuit board 161 can provide sufficient installation space for the electronic control component 162.

[0165] Therefore, by constructing the circuit board 161 as a ring-shaped plate or a fan-shaped plate, it is convenient to match the circuit board 161 with the first clearance space 1321 provided on the first impeller 130, so that at least a portion of the circuit board 161 can be arranged in the first clearance space 1321, while reducing the space occupied by the circuit board 161.

[0166] Combination Figures 10 to 12 In some specific embodiments of this utility model, in the radial direction of the first impeller 130, the radius of the circuit board 161 on the side closer to the first impeller 130 (which can also be understood as the inner diameter of the circuit board 161) is defined as R1, and the size range of R1 is 60mm to 90mm. The radius of the circuit board 161 on the side farther away from the first impeller 130 (which can also be understood as the outer diameter of the circuit board 161) is defined as R2, and the size range of R2 is 110mm to 140mm, so as to ensure that the size of the circuit board 161 can meet the installation requirements of the electronic control component 162.

[0167] The radius Rb of the first impeller 130 is typically in the range of 70mm to 150mm. Since R1 < Rb, a first clearance space 1321 is provided on the first impeller 130 so that the first impeller 130 can make way for the first power module 160, which facilitates the integration of the first power module 160 with the first impeller 130, improves the structural compactness of the first impeller 130 and the first power module 160, and helps to reduce the space occupied by the first power module 160 in the housing 170, thereby facilitating the miniaturization design of the heating and cooling unit 100.

[0168] Combination Figure 1 and Figure 3 In some embodiments of this utility model, the portion of the coil support 150 extending beyond the first impeller 130 is provided with a second clearance space 152 to avoid the first power module 160.

[0169] Considering that when the first power module 160 is integrated with the first impeller 130 through the first clearance space 1321, the first power module 160 will protrude from the first impeller 130 in the radial direction and extend towards the inner peripheral wall of the housing 170, in order to prevent the extension of the coil bracket 150 beyond the first impeller 130 from interfering with the installation of the first power module 160, a second clearance space 152 needs to be provided in the part of the coil bracket 150 that extends beyond the first impeller 130. This allows the coil bracket 150 to guide air into the heat dissipation space 101 while preventing the coil bracket 150 from interfering with the installation of the first power module 160. This improves the assembly convenience of the coil bracket 150 and the first power module 160 and also helps to reduce the material cost of the coil bracket 150.

[0170] In some embodiments, the portion of the coil support 150 extending beyond the first impeller 130 may be provided with a notch extending in the circumferential direction of the coil support 150, the notch forming a second clearance space 152, wherein the size of the notch can be determined according to the size of the first power module 160, and is not specifically limited here.

[0171] like Figure 3 As shown, in some embodiments of this utility model, the housing 170 has a heat dissipation area 110, which is correspondingly arranged with the first power module 160, and the air flowing through the first power module 160 flows outward through the heat dissipation area 110.

[0172] Specifically, after the second part 132 discharges air, the air can flow through the first power module 160 and dissipate heat from the first power module 160. The air that has dissipated heat from the first power module 160 can be further discharged from the air duct space through the heat dissipation area 110, which is beneficial to improving the heat dissipation effect of the first power module 160. At the same time, it is beneficial to prevent the air that has exchanged heat with the first power module 160 from accumulating in the housing 170 and causing overheating of other components (such as electromagnetic coils) in the housing 170, which is beneficial to improving the operational stability of the heating and cooling unit 100.

[0173] Reference Figure 3 In some embodiments of this utility model, the heat dissipation area 110 is disposed at the bottom of the housing 170, that is, the heat dissipation area 110 is disposed downward to prevent debris (such as dust and water) from entering the housing 170 through the heat dissipation area 110 and affecting the operation of the internal components of the housing 170. Correspondingly, since the first power module 160 is disposed in correspondence with the heat dissipation area 110, the first power module 160 can be arranged below the rotation axis of the second part 132.

[0174] like Figure 3As shown, in some embodiments of this utility model, the heat dissipation area 110 includes a plurality of through holes 111 spaced apart.

[0175] The through hole 111 is provided through the housing 170 along the thickness direction of the housing 170. It can also be understood that the through hole 111 is provided through the housing 170 along the radial direction of the first impeller 130. Multiple through holes 111 are arranged at intervals on the housing 170 along the axial direction and circumferential direction of the first impeller 130, that is, multiple through holes 111 are arranged in an array on the housing 170 and communicate with the internal space of the housing 170. By providing multiple through holes 111, it is beneficial to improve the exhaust efficiency of the air after heat exchange with the first power module 160, thereby further improving the heat dissipation efficiency of the first power module 160.

[0176] Combination Figures 1 to 3 In some embodiments of this utility model, the heating and cooling unit 100 further includes a shielding component, which is disposed on the side of the electromagnetic coil away from the heating element 120 in the radial direction of the first impeller 130.

[0177] When the electromagnetic coil is energized, a magnetic field will also be generated on the side of the electromagnetic coil away from the heating element 120 in the radial direction of the first impeller 130, causing magnetic field leakage. By setting a shielding component on the side of the electromagnetic coil away from the heating element 120, the leakage of the magnetic field on the side of the electromagnetic coil away from the heating element 120 can be reduced, and the magnetic field strength on the side of the electromagnetic coil close to the heating element 120 can be increased to improve the heating effect of the heating element 120, thereby improving the effect of the hot air output of the heating and cooling machine 100.

[0178] Combination Figures 1 to 3 In some embodiments of this invention, the shielding component and the electromagnetic coil are spaced apart to define the airflow channel 102.

[0179] For example, the shielding component can be disposed radially outside the electromagnetic coil, and in the radial direction of the first impeller 130, the shielding component can be spaced apart from the electromagnetic coil so that an air flow channel 102 can be defined between the shielding component and the electromagnetic coil. The axial flow impeller 140 can drive the air entering the housing 170 to flow into the air flow channel 102 to dissipate heat from the electromagnetic coil. At the same time, the shielding component can restrict the air entering the air flow channel 102 from dispersing in the radial direction, which is beneficial to improving the air flow efficiency, thereby improving the efficiency of the hot air output of the heater 100.

[0180] Combination Figures 1 to 3In some embodiments of the present invention, the shielding assembly includes a magnetic strip support 181 and a shielding member. The magnetic strip support 181 is sleeved on the outside of the electromagnetic coil to define an air flow channel 102. The shielding member is disposed on the outer peripheral wall of the magnetic strip support 181 away from the air flow channel 102 and is configured to shield the magnetic field.

[0181] Exemplarily, the magnetic strip support 181 can be formed in a ring shape and sleeved on the radial outer side of the electromagnetic coil, and the magnetic strip support 181 and the electromagnetic coil are spaced apart so that an air flow channel 102 can be defined between the magnetic strip support 181 and the electromagnetic coil. In a further embodiment, a mounting groove is formed on the side of the magnetic strip support 181 away from the electromagnetic coil, and the shielding member can be embedded in the mounting groove to fix the shielding member and the magnetic strip support 181, thereby improving the installation reliability of the shielding member. At the same time, the shielding member can reduce the leakage of the magnetic field on the side of the electromagnetic coil away from the heating element 120, and is conducive to increasing the magnetic field strength on the side of the electromagnetic coil close to the heating element 120, so as to improve the heating effect of the heating element 120.

[0182] In some embodiments, the shielding component is formed as a magnetic material component. Optionally, the magnetic material can be neodymium iron boron permanent magnet, ferrite permanent magnet, silicon steel, metal soft magnetic powder core, and ferrite soft magnet, etc. The specific material of the shielding component can be determined according to actual production requirements and is not specifically limited here, as long as the shielding component can reduce the leakage of the magnetic field generated on the side of the electromagnetic coil away from the heating element 120.

[0183] like Figure 14 As shown, in some embodiments of this utility model, the housing 170 is provided with an air outlet mesh cover 171, and an air outlet is formed on the air outlet mesh cover 171. The air outlet mesh cover 171 has a first air outlet area 1711 and a second air outlet area 1712. In the axial projection plane of the first impeller 130, at least a portion of the orthographic projection plane of the first air outlet area 1711 is located radially inside the orthographic projection plane of the air outlet end of the coil support 150, and the orthographic projection plane of the second air outlet area 1712 is located radially outside the orthographic projection plane of the air outlet end of the coil support 150.

[0184] The heating element 120 is used to heat the air. The heating element 120 can be formed into a ring shape so that the heating element 120 can not only heat the air, but also guide the air to flow along the axial direction of the heating element 120, effectively reducing the resistance encountered by the air when exchanging heat with the heating element 120, which is conducive to improving the air outlet speed of the heating and cooling unit 100.

[0185] Combination Figure 3 , Figure 14 and Figure 15Because the heat dissipation space 101 and the air flow channel 102 are at least partially spaced apart, the air flowing out of the heat dissipation space 101 is different from the air flowing out of the air flow channel 102. For example, in some embodiments, the flow rate of the air flowing out of the heat dissipation space 101 is different from the flow rate of the air flowing out of the air flow channel 102; in other embodiments, the temperature of the air flowing out of the heat dissipation space 101 is different from the temperature of the air flowing out of the air flow channel 102; in other embodiments, other factors may also cause the air flowing out of the heat dissipation space 101 to be different from the air flowing out of the air flow channel 102.

[0186] In an embodiment of this utility model, in order to accommodate the difference between the air flowing out of the self-heating space 101 and the air flowing out of the air channel 102, the air outlet cover 171 is provided with a first air outlet area 1711 on the radially inner side of the coil support 150, and the air outlet cover 171 is provided with a second air outlet area 1712 on the radially outer side of the coil support 150. This allows the first air outlet area 1711 to better guide the self-heating element 120 and the air blown out of the self-heating space 101, and the second air outlet area 1712 to better guide the air blown out of the air channel 102, thereby improving the overall air outlet effect of the heating and cooling unit 100.

[0187] Optionally, in the axial projection plane of the coil support 150, the orthographic projection plane of the first air outlet region 1711 can completely coincide with the orthographic projection plane of the air outlet end of the coil support 150; or the orthographic projection area of ​​the first air outlet region 1711 can be larger than the orthographic projection area of ​​the air outlet end of the coil support 150, and the orthographic projection plane of the air outlet end of the coil support 150 can fall within the orthographic projection range of the first air outlet region 1711. The specific corresponding area of ​​the first air outlet region 1711 and the air outlet end of the coil support 150 can be determined according to actual production requirements, and is not specifically limited here.

[0188] In some embodiments, the coil support 150 may be defined by a portion of the housing 170; in other embodiments, the coil support 150 may be separately disposed from the housing 170, and the specific formation of the coil support 150 is not limited herein.

[0189] like Figure 15As shown, in some further embodiments, the first air outlet area 1711 is formed in a ring shape, and the second air outlet area 1712 is also formed in a ring shape. The radial distance between the opposite sidewalls of the first air outlet area 1711 is greater than the radial distance between the opposite sidewalls of the second air outlet area 1712. This is beneficial to make the opening area of ​​the first air outlet area 1711 greater than the opening area of ​​the second air outlet area 1712, which in turn is beneficial to make the air volume of the first air outlet area 1711 greater than the air volume of the second air outlet area 1712. Since the first air outlet area 1711 is located radially inside the second air outlet area 1712, the air blown out by the heater / cooler 100 can be more concentrated radially inside, thereby making the air column blown out by the heater / cooler 100 can be blown further, effectively improving the air outlet effect of the heater / cooler 100.

[0190] Reference Figure 15 In some specific embodiments of this utility model, the air outlet cover 171 includes multiple nested fixed rings and multiple air guide ribs. Each air guide rib is connected to two adjacent fixed rings. Multiple air guide ribs are provided between adjacent fixed rings at circumferential intervals. The space between the fixed rings connected by the air guide ribs defines the first air outlet area 1711 and the second air outlet area 1712. Thus, the method of defining the first air outlet area 1711 and the second air outlet area 1712 is simple, which helps to reduce the processing difficulty of the air outlet cover 171, thereby helping to reduce the cost of the air conditioner 100 and improving the production efficiency of the air conditioner 100.

[0191] like Figure 15 As shown, in some specific embodiments of this utility model, the air outlet mesh cover 171 includes a first fixing ring 1713 near the center, a second fixing ring 1714 outer sleeved on the first fixing ring 1713, and a third fixing ring 1715 outer sleeved on the second fixing ring 1714, wherein the first fixing ring 1713, the second fixing ring 1714, and the third fixing ring 1715 are coaxially arranged. A first air outlet area 1711 is defined between the first fixing ring 1713 and the second fixing ring 1714, and a second air outlet area 1712 is defined between the second fixing ring 1714 and the third fixing ring 1715.

[0192] Preferably, the third fixing ring 1715 and the housing 170 can be integrally formed, or it can be understood that the third fixing ring 1715 can be formed from the housing 170.

[0193] like Figure 15As shown, in some embodiments of this utility model, the air guide ribs of the first air outlet area 1711 are defined as first air guide ribs 1716. The first air outlet area 1711 is provided with a plurality of first air guide ribs 1716 spaced apart along the circumferential direction. The first end of each first air guide rib 1716 is connected to the first fixing ring 1713, and the second end of each first air guide rib 1716 is connected to the second fixing ring 1714, which effectively improves the connection stability between the first fixing ring 1713, the first air guide ribs 1716 and the second fixing ring 1714.

[0194] Reference Figure 15 In some embodiments of this utility model, the air guide ribs in the second air outlet area 1712 are defined as second air guide ribs 1717. The second air outlet area 1712 is provided with a plurality of second air guide ribs 1717 spaced apart along the circumferential direction. The first end of each second air guide rib 1717 is connected to the second fixing ring 1714, and the second end of each second air guide rib 1717 is fixedly connected to the third fixing ring 1715, which effectively improves the connection stability between the second fixing ring 1714, the second air guide ribs 1717 and the third fixing ring 1715.

[0195] like Figure 15 As shown, in some embodiments, the first air guide rib 1716 is formed as an arc segment.

[0196] By designing the first air guide rib 1716 as an arc segment, an arc-shaped air duct is formed between two adjacent first air guide ribs 1716, which can be adapted to the spiral airflow bundle, making it easier for the spiral airflow bundle to enter the first air outlet area 1711, which helps to reduce wind resistance. The air passing through the first air outlet area 1711 is guided by the first air guide rib 1716 and gathers towards the center of the air outlet cover 171, so that the airflow passing through the first air outlet area 1711 can flow forward stably to transmit to a longer distance, thus extending the air delivery distance of the air conditioner 100.

[0197] It is understood that in other embodiments, the first air guide rib 1716 may also be formed in other shapes. For example, the first air guide rib 1716 may also be a long strip structure extending in the radial direction of the air outlet mesh 171. This utility model does not limit this.

[0198] like Figure 15 As shown, in some specific embodiments of this utility model, the diameter of the second fixing ring 1714 is the same as the maximum diameter of the air outlet end of the coil bracket 150, so that the air in the air flow channel 102 can pass through the second air outlet area 1712.

[0199] In some embodiments, the first air guide rib 1716 and the second air guide rib 1717 have different shapes.

[0200] Since the heat dissipation space 101 and the air flow channel 102 are at least partially separated, the air blown out of the heat dissipation space 101 and the air flow channel 102 are different. By making the shapes of the first air guide rib 1716 and the second air guide rib 1717 different, the air guiding effects of the first air outlet area 1711 and the second air outlet area 1712 are different. This is beneficial for the first air outlet area 1711 to better guide the air blown out of the heat dissipation space 101 and the self-heating component 120, and for the second air outlet area 1712 to better guide the air blown out of the air flow channel 102, thereby improving the overall air outlet effect of the cooling and heating unit 100.

[0201] In some specific embodiments, the first air guide rib 1716 is formed in an arc shape, and the second air guide rib 1717 is formed in a straight line segment.

[0202] When the air inside the housing 170 passes through the air outlet cover 171, part of the air passes through the first air outlet area 1711 and the other part passes through the second air outlet area 1712. The air passing through the first air outlet area 1711 is guided by the arc-shaped first air guide rib 1716 and converges towards the central axis of the air outlet cover 171, so that the airflow passing through the first air outlet area 1711 can flow forward more stably to deliver it to a greater distance, which is beneficial to extending the air delivery distance of the air conditioner 100.

[0203] The air continues to be spiraled forward through the second air outlet area 1712. As it spirals forward, it diffuses in the radial direction to form a gentle diffused airflow. In other words, the air conditioner 100 not only has a long airflow distance for concentrating air, but also a large airflow area for dispersing airflow.

[0204] In some other specific embodiments, the first air guide rib 1716 is formed as an arc segment, and the second air guide rib 1717 can also be formed as an arc segment. The degree of curvature of the first air guide rib 1716 is less than the degree of curvature of the second air guide rib 1717.

[0205] In some application scenarios, due to the partial spacing between the heat dissipation space 101 and the air flow channel 102, the degree of rotation of the air in the heat dissipation space 101 is different from that in the air flow channel 102. In particular, the radial velocity component of the air in the air flow channel 102 is greater. Therefore, in this embodiment of the present invention, the first air guide rib 1716 and the second air guide rib 1717 are both designed to convert the radial velocity component of the air into the axial velocity component. Furthermore, the second air guide rib 1717 has a greater degree of curvature, which can better guide the air through the second air outlet area 1712 and effectively extend the air delivery distance of the heat exchanger 100.

[0206] Combination Figure 1 and Figure 3 In some embodiments of this utility model, the housing 170 is further provided with an air inlet screen 172, and an air inlet is formed on the air inlet screen 172. The air inlet screen 172 and the air outlet screen 171 are detachably provided on the housing 170, so that the user can remove the air inlet screen 172 and / or the air outlet screen 171 for cleaning. At the same time, it is convenient for the user to clean and maintain the internal structure of the housing 170, which helps to improve the ease of use of the air conditioner 100.

[0207] In some specific embodiments, the air inlet screen 172 is detachably disposed on the housing 170, and the air outlet screen 171 is integrally formed with the housing 170.

[0208] Optionally, the heat exchanger 100 can simultaneously satisfy the requirement that the opening area of ​​the first air outlet area 1711 is larger than the opening area of ​​the second air outlet area 1712, and that the housing 170 is provided with an air inlet mesh cover 172 forming an air inlet, so as to ensure the air outlet effect of the heat exchanger 100 while helping to reduce the risk of debris or hands accidentally entering the housing 170.

[0209] In some embodiments, when the air conditioner 100 is actually in use, the air inlet grille 172 is located on the rear side of the housing 170, and the air outlet grille 171 is located on the front side of the housing 170. That is, the air conditioner 100 draws in air from the rear and outputs air to the front.

[0210] Combination Figure 3 and Figure 15 In some embodiments of this utility model, the air outlet mesh cover 171 is provided with a receiving cavity 1718 for accommodating the first driving device 190.

[0211] The first drive device 190 is located on the air outlet cover 171. That is, the first drive device 190 is located on the side of the first impeller 130 away from the air inlet cover 172 to prevent the first drive device 190 from affecting the air intake of the air conditioner 100. The first drive device 190 is located in the receiving cavity 1718 of the air outlet cover 171. The protection of the air outlet cover 171 helps to reduce the risk of interference between the first drive device 190 and the external structure, reduce the risk of damage to the air conditioner 100, and thus help to extend the service life of the air conditioner 100.

[0212] like Figure 15 As shown, in a further embodiment of this utility model, the air outlet cover 171 is provided with a plurality of spaced-apart holes, and a plurality of through holes 1719 communicate with the receiving cavity 1718 to dissipate heat from the first drive device 190, which is beneficial to improving the heat dissipation efficiency of the first drive device 190, reducing the risk of damage to the first drive device 190, and thus helping to extend the service life of the heat exchanger 100.

[0213] The following reference Figure 3 The illustrated embodiment briefly describes the airflow path of the air conditioning unit 100 of this utility model.

[0214] Air enters the housing 170 through the air inlet screen 172. A portion of the air is driven by the axial flow impeller 140 to flow into the air channel 102 to dissipate heat from the electromagnetic coil. After dissipating heat from the electromagnetic coil, the air flows from the air channel 102 to the air outlet screen 171 and is discharged from the housing 170 through the air outlet screen 171.

[0215] Another portion of the air is driven by the first impeller 130. The first part 131 of the first impeller 130 drives the air to flow toward the inner wall of the heating element 120 to dissipate heat from the heating element 120. After exchanging heat with the heating element 120, the air further flows toward the exhaust screen 171 and is discharged from the housing 170 through the exhaust screen 171. A portion of the air driven by the second part 132 of the first impeller 130 flows into the heat dissipation space 101 from the portion of the coil support 150 that extends beyond the heating element 120 to dissipate heat from the outer wall of the heating element 120. After exchanging heat with the outer wall of the heating element 120, the air further flows toward the exhaust screen 171 and is discharged from the housing 170 through the exhaust screen 171.

[0216] Meanwhile, another portion of the air driven by the second part 132 flows toward the first power module 160 to dissipate heat from the first power module 160. The air after dissipating heat from the first power module 160 flows further toward the heat dissipation area 110 and is discharged from the housing 170 through multiple through holes 111.

[0217] like Figure 16 As shown, in some embodiments of this utility model, the heating and cooling unit 100 further includes a bracket 210, and the heating and cooling unit 100 is rotatably mounted on the bracket 210.

[0218] For example, the heating and cooling unit 100 also includes a base 220, a bracket 210 rotatably connected to the base 220, a second driving device is provided on the base 220, the second driving device can drive the bracket 210 to rotate in the left and right direction relative to the base 220, the bracket 210 can form a mounting cavity, the inner wall of the mounting cavity is provided with a connecting part, the heating and cooling unit 100 is rotatably connected to the connecting part and accommodated in the mounting cavity, for example: the connecting part of the bracket 210 clamps the heating and cooling unit 100 in the left and right direction and drives the heating and cooling unit 100 to rotate up and down.

[0219] Optionally, the up-and-down rotation of the heating and cooling unit 100 can also be in the form of a guide rail. Alternatively, the bracket 210 can be mounted on the base 220, and the second drive device can be mounted on the bracket 210 and connected to the heating and cooling unit 100 to drive the heating and cooling unit 100 to rotate up and down or left and right.

[0220] The second drive unit can be configured as a drive motor.

[0221] The following is based on Figures 1 to 3 as well as Figure 16 The structural description of the embodiment illustrates two assembly methods of the heating and cooling unit 100 of this utility model.

[0222] Assembly Method 1: The electromagnetic coil is mounted on the coil bracket 150, the heating element 120 is fixedly connected to the coil bracket 150, the shielding element can be mounted on the magnetic strip bracket 181, the magnetic strip bracket 181 is sleeved on the radially outer side of the coil bracket 150 and fixedly connected to the coil bracket 150, the first impeller 130 is fixedly connected to the axial flow impeller 140, and the first impeller 130 can be positioned in the center area of ​​the heating element 120 by hand, the first power module 160 is arranged in the first clearance space 1321 and fixedly connected to the magnetic strip bracket 181. This enables the modular assembly of the heating element 120, electromagnetic coil, coil bracket 150, magnetic strip bracket 181, shielding component, first power module 160, first impeller 130, and axial flow impeller 140. The above components are then placed into the housing 170, and the coil bracket 150 and the first impeller 130 are further connected to the housing 170. The air inlet screen 172 is installed on the side of the housing 170 away from the air outlet screen 171. The housing 170 is then installed on the bracket 210, and the bracket 210 is installed on the base 220 to complete the assembly of the cooling and heating unit 100.

[0223] In order to improve the assembly reliability of the components inside the housing 170 and the housing 170, the magnetic strip bracket 181 can be further connected to the housing 170 to reduce the risk of the components inside the housing 170 falling off the housing 170.

[0224] Assembly Method Two: First, the heating element 120 is fixedly installed inside the housing 170. Then, the coil bracket 150 with the electromagnetic coil installed is fitted onto the radial outer side of the heating element 120, and the coil bracket 150 is fixedly connected to the housing 170. Next, the magnetic strip bracket 181 is fitted onto the radial outer side of the coil bracket 150 and fixedly connected to the housing 170. The first impeller 130 is connected to the axial flow impeller 140, and the first impeller 130 is positioned and installed in the central area of ​​the heating element 120. The first power module 160 is set in the first clearance space 1321, and the first power module 160 can be installed on the magnetic strip bracket 181 or the housing 170. Finally, the air inlet screen 172 is installed on the side of the housing 170 away from the air outlet screen 171. Then, the housing 170 is installed on the bracket 210, and the bracket 210 is installed on the base 220 to complete the assembly of the heating and cooling unit 100.

[0225] The first power module 160 can be pre-installed on the magnetic strip bracket 181, which helps to improve the ease of installation of the first power module 160 and the magnetic strip bracket 181.

[0226] It should be noted that the above-mentioned fixed connection methods can all use threaded connectors to fix the components together, so as to facilitate the disassembly, repair and cleaning of the heating and cooling unit 100. Of course, it is understood that the fixed connection methods include, but are not limited to, connecting with threaded connectors, or snap-fitting, etc. The specific fixed connection method can be determined according to the actual production requirements, and no specific limitation is made here.

[0227] In some other embodiments of this utility model, multiple heating elements 120 can be provided, and multiple heating elements 120 can be nested in sequence. For example, two heating elements 120 can be provided, and the two heating elements 120 can be respectively provided on the radial inner side and radial outer side of the electromagnetic coil, and the electromagnetic coil is spaced apart in the radial direction. By providing multiple heating elements 120, the efficiency of the hot air output of the heating and cooling machine 100 is effectively improved, and it is also beneficial to construct a heating area that expands in the radial direction within the housing 170, which is beneficial to further improve the heating efficiency of the heating and cooling machine 100.

[0228] In some other embodiments of this utility model, the heating and cooling unit 100 can be heated by a heating wire or a PTC heating element. The heating wire or PTC heating element can be installed inside the coil support 150 through a heat-conducting mounting bracket 210. A heat dissipation space 101 is defined between the mounting bracket 210 and the coil support 150, and an airflow channel can be formed inside the mounting bracket 210 to ensure that air can flow through the radial sides of the mounting bracket 210, which is beneficial to improving the heat exchange effect of the air and preventing local overheating of the heating and cooling unit 100, thus improving the safety of the heating and cooling unit 100.

[0229] Combination Figures 1 to 3 According to an embodiment of the present invention, the heating and cooling unit 100 includes a heating element 120, a centrifugal impeller 130, and an axial flow impeller 140. The heating element 120 is used to heat air. At least a portion of the centrifugal impeller 130 is located inside the heating element 120 to drive air to flow through the heating element 120. The axial flow impeller 140 is located outside the heating element 120 and is an integral structure with the centrifugal impeller 130. The axial flow impeller 140 is used to deliver air toward the side of the heating element 120 away from the centrifugal impeller 130.

[0230] The centrifugal fan 130 has an axial air intake and a radial air outlet. By arranging at least a portion of the centrifugal fan 130 inside the heating element 120, the centrifugal fan 130 can deliver air towards the inner wall of the heating element 120, thereby improving the heat dissipation efficiency of the air to the inner wall of the heating element 120 and improving the hot air output effect of the heater 100.

[0231] Optionally, the centrifugal impeller 130 can be entirely located within the heating element 120. That is, in the radial projection of the centrifugal impeller 130, the orthographic projection surface of the centrifugal impeller 130 falls within the orthographic projection range of the heating element 120, which is beneficial to improving the effect of the centrifugal impeller 130 driving air to flow through the heating element 120. Alternatively, a portion of the centrifugal impeller 130 extends into the inner side of the heating element 120, and another portion is located on the outer side of the heating element 120. The portion of the centrifugal impeller 130 located on the outer side of the heating element 120 can drive air to flow on the outer side of the heating element 120, which facilitates air flow through the side surface of the heating element 120 away from the centrifugal impeller 130 (i.e., the outer wall of the heating element 120). This facilitates air dissipation from the outer wall of the heating element 120, which is beneficial to improving the heat dissipation effect of the heating element 120, reducing the risk of local overheating of the heating element 120, and improving the effect of the hot air output by the heating and cooling unit 100.

[0232] It is understandable that the arrangement of the centrifugal impeller 130 and the heating element 120 can be determined according to actual production requirements, and no specific restrictions are made here.

[0233] Furthermore, by providing an axial flow fan 140 on the outside of the heating element 120, the axial flow fan 140 can drive air to flow towards the outer wall of the heating element 120, so that the air can dissipate heat to the outer wall of the heating element 120, which helps to reduce the risk of local overheating of the heating element 120, thereby improving the safety of the use of the heating and cooling machine 100 and improving the efficiency of the heating and cooling machine 100 in outputting hot air.

[0234] The centrifugal impeller 130 and the axial flow impeller 140 are integrated into one structure.

[0235] It should be noted that "integrated structure" refers to the feature that the centrifugal impeller 130 and the axial flow impeller 140 are fixed together. For example, the centrifugal impeller 130 can be fixedly connected to the axial flow impeller 140 by ultrasonic welding or injection molding, so that the centrifugal impeller 130 and the axial flow impeller 140 are integrally formed. It can also be understood that the centrifugal impeller 130 and the axial flow impeller 140 are formed into an integral structure. Thus, the centrifugal impeller 130 and the axial flow impeller 140 can be driven by the same drive device (i.e., the first drive device 190), which helps to simplify the structure of the air conditioner 100, reduce the production cost of the air conditioner 100, and facilitate the assembly of the air conditioner 100.

[0236] The heater / cooler 100 includes a warm air mode and a cool air mode. In the warm air mode, the heating element 120 heats up, and the centrifugal fan 130 and the axial fan 140 are turned on. That is to say, in the warm air mode, the heating element 120 works and generates heat, and at the same time the centrifugal fan 130 and the axial fan 140 are turned on to drive airflow. The air can dissipate heat to both the inner and outer walls of the heating element 120 at the same time, and the temperature of the heating element 120 rises after the air dissipates heat. The heater / cooler 100 can output hot air to heat the low-temperature environment.

[0237] In cold air mode, the heating element 120 is not working and the centrifugal fan 130 and axial fan 140 are turned on.

[0238] For example, in the cooling mode, the heating element 120 can be de-energized to prevent it from generating heat, while the centrifugal fan 130 and the axial fan 140 operate simultaneously. At this time, the heater 100 can output pure cold air to cool down the high-temperature environment.

[0239] In related technologies, poor heat dissipation of the heating element results in poor efficiency of the heat output of the air conditioner, and is prone to local overheating of the heating element, affecting the safety of the air conditioner.

[0240] This application incorporates a centrifugal fan 130, with at least a portion of the fan 130 positioned inside the heating element 120. This allows the fan 130 to direct airflow towards the inner wall of the heating element 120, improving heat dissipation efficiency. Furthermore, by adding an axial fan 140 to the outer side of the heating element 120, the fan 140 drives airflow towards the outer wall of the heating element 120, facilitating heat dissipation and further enhancing the heat dissipation effect of the heating element 120. This, in turn, improves the heat output of the heating / cooling unit 100. The improved airflow efficiency reduces the risk of localized overheating in the heating element 120, thus enhancing the safety of the heater 100. Furthermore, the integrated structure of the centrifugal impeller 130 and the axial impeller 140 reduces production costs and simplifies assembly. Additionally, the heater 100 features both cold and warm air modes, allowing it to provide appropriate air output based on user needs, thus improving functionality and user experience.

[0241] In some embodiments of this utility model, the heating element 120 can be configured as a component that has a heating function after being powered on. For example, the heating element 120 can be configured as a PTC heating element or heating wire, etc. Alternatively, the heating element 120 can be configured as a component that generates heat in a non-contact manner. For example, the heating element 120 can be configured as a component that has a heating function under the action of a magnetic field. The specific configuration of the heating element 120 can be determined according to actual production requirements and is not specifically limited here.

[0242] Combination Figures 4 to 6 In some embodiments of this utility model, the axial flow impeller 140 includes a mounting base 141 and a plurality of axial flow blades 142 disposed on the mounting base 141.

[0243] For example, multiple axial flow blades 142 can be arranged at intervals along the circumferential direction of the mounting base 141. The mounting base 141 can serve as a mounting carrier for multiple axial flow blades 142. By fixing the mounting base 141 to the centrifugal impeller 130, the axial flow impeller 140 and the centrifugal impeller 130 can be integrally formed.

[0244] Furthermore, combined Figures 4 to 6 The mounting base 141 is formed in an annular shape and connected to the centrifugal blades of the centrifugal impeller 120, with a portion of the centrifugal blades extending into the mounting base 141.

[0245] In other words, in the radial projection plane of the centrifugal impeller 130, the orthographic projection plane of the centrifugal blades overlaps with the orthographic projection plane of the mounting base 141. The mounting base 141 can act as a guide, which is beneficial to improving the airflow to the centrifugal impeller 130, thereby improving the air intake and exhaust effect of the centrifugal impeller 130.

[0246] In some embodiments, the length of the overlapping area between the orthographic projection surface of the centrifugal blade and the orthographic projection surface of the mounting base 141 in the axial direction of the centrifugal impeller 130 can be 3 mm; in other embodiments, the length of the overlapping area between the orthographic projection surface of the centrifugal blade and the orthographic projection surface of the mounting base 141 in the axial direction of the centrifugal impeller 130 can be 4 mm; it is understood that the overlap length between the centrifugal blade and the mounting base 141 can be determined according to actual production requirements, and is not specifically limited here.

[0247] Combination Figure 2 and Figure 3 as well as Figure 5 and Figure 6 In some embodiments of this utility model, the centrifugal impeller 130 includes a first part 131 and a second part 132. The first part 131 is located inside the heating element 120, and the second part 132 is located outside the heating element 120 and connected to the axial flow impeller 140. The second part 132 blows air toward the side of the heating element 120 away from the first part 131.

[0248] In other words, the heating element 120 extends along the circumferential direction of the first part 131 so that the first part 131 can supply air to the inner wall of the heating element 120, thereby facilitating the heat dissipation of the heating element 120. Considering that the outer wall of the heating element 120 also needs to dissipate heat, the second part 132 is located outside the heating element 120 so that at least part of the air discharged from the second part 132 can flow outside the heating element 120, thereby facilitating the flow of air through the outer wall of the heating element 120 and dissipating heat from the outer wall of the heating element 120, thereby improving the heat dissipation effect of the heating element 120.

[0249] Furthermore, combined Figure 3 and Figure 6 The axial flow fan 140 is fixed to the axial end of the second part 132 so that the axial flow fan 140 can be arranged on the outside of the heating element 120, so that the axial flow fan 140 can deliver air to the outer wall of the heating element 120, thereby facilitating the heat dissipation of the outer wall of the heating element 120.

[0250] In a further embodiment of the present invention, the axial flow fan 140 is fixed to the end of the second part 132 away from the first part 131, which helps to prevent the axial flow fan 140 and the heating element 120 from interfering with each other, prevents the heating element 120 from hindering the rotation of the axial flow fan 140, and improves the assembly convenience of the axial flow fan 140 and the heating element 120.

[0251] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0252] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooling and heating unit, characterized in that, include: An electromagnetic coil, which can be energized to generate a magnetic field; A heating element configured to generate heat under the action of a magnetic field, the heating element being formed into a ring structure, and an electromagnetic coil being disposed on the outside of the heating element; A first impeller, at least a portion of which is located inside the heating element to drive airflow through the heating element; An axial flow fan is provided on the outside of the heating element, and the axial flow fan is correspondingly arranged with the electromagnetic coil to deliver air toward the electromagnetic coil; the heating and cooling machine includes a warm air mode and a cold air mode. In the warm air mode, the electromagnetic coil is energized and the heating element heats up, and the first fan and the axial flow fan are turned on. In the cold air mode, the electromagnetic coil is de-energized and at least the first impeller is running.

2. The air conditioner / heater according to claim 1, characterized in that, The axial flow wind turbine is fixed to the first wind turbine so that it rotates synchronously with the first wind turbine.

3. The cooling and heating unit according to claim 2, characterized in that, The first impeller includes a first part and a second part, the first part being located inside the heating element and the second part being located outside the heating element. The axial flow impeller is fixed to the axial end of the second part.

4. The cooling and heating unit according to claim 1, characterized in that, The axial flow wind turbine includes a mounting base and multiple axial flow blades disposed on the mounting base; The maximum distance between any two points of the mounting base is Di, the outer diameter of the axial flow blade is Do, and the axial flow impeller is configured such that the ratio of Di / Do is in the range of 0.5 to 0.

8.

5. The cooling and heating unit according to claim 1, characterized in that, The first impeller is a centrifugal impeller that blows air toward the inner wall of the heating element.

6. The air conditioner / heater according to claim 5, characterized in that, The axial flow wind turbine includes a mounting base and multiple axial flow blades disposed on the mounting base; The maximum diameter of the centrifugal blades of the first impeller is Dc, the maximum distance between any two points of the mounting base is Di, and the ratio of Di / Dc ranges from 0.8 to 1.

4.

7. The air conditioner / heater according to claim 1, characterized in that, Along the axial direction of the first impeller, the overlap length between the heating element and the blades of the first impeller is sp, the axial length of the blades of the first impeller is Lb, and the heating and cooling unit is configured to satisfy: 0.3≤sp / Lb<1.

8. The cooling and heating unit according to claim 7, characterized in that, Along the axial direction of the first impeller, the axial length of the heating element is Lt1, and the cooling and heating machine satisfies the following: the value of Lt1 / Lb is in the range of 0.5 to 1.

1.

9. The cooling and heating unit according to any one of claims 1-8, characterized in that, It also includes a coil support, which is formed into a ring structure and is sleeved on the heating element. The electromagnetic coil is wound around the coil support, and a heat dissipation space is provided between the coil support and the heating element. The first impeller is configured to guide airflow into the heat dissipation space.

10. The cooling and heating unit according to claim 9, characterized in that, Along the axial direction of the first impeller, the end of the coil bracket extends beyond the heating element in the direction toward the air inlet side of the first impeller.

11. The cooling and heating unit according to claim 10, characterized in that, The first impeller includes a first part and a second part. The first part is located inside the heating element, and the second part is located outside the heating element. The second part blows air toward the inner wall of the coil support.

12. The cooling and heating unit according to claim 11, characterized in that, The second part is provided with a first clearance space; The heating and cooling unit also includes a first power module, which is at least electrically connected to the electromagnetic coil, and at least a portion of the first power module is located within the first clearance space.

13. The cooling and heating unit according to claim 12, characterized in that, The portion of the coil support extending beyond the first wind turbine is provided with a second clearance space to avoid the first power module.

14. The cooling and heating unit according to claim 12, characterized in that, The first power module includes a circuit board and an electronic control component disposed on the circuit board, at least a portion of the circuit board being located in the first clearance space.

15. The air conditioner / heater according to claim 14, characterized in that, The heating and cooling unit includes a housing, and the electromagnetic coil, the heating element, the first impeller and the axial flow impeller are all disposed inside the housing; The thickness direction of the circuit board is parallel to the axial direction of the first wind turbine, and in the radial direction of the first wind turbine, the surface of the circuit board located within the first clearance space and facing the first wind turbine is formed as an arc surface matching the first wind turbine, and / or, In the radial direction of the first impeller, the surface of the circuit board away from the first impeller matches the shape of the inner peripheral wall of the housing.

16. The cooling and heating unit according to claim 15, characterized in that, In the circumferential direction of the first impeller, the circuit board is formed as an annular plate or a fan-shaped annular plate.

17. The air conditioner / heater according to claim 1, characterized in that, It also includes a shielding assembly, which is located on the side of the electromagnetic coil away from the heating element in the radial direction of the first impeller.

18. The cooling and heating unit according to claim 17, characterized in that, The shielding component and the electromagnetic coil are spaced apart to define an airflow path.

19. The cooling and heating unit according to claim 18, characterized in that, The shielding assembly includes a magnetic strip support and a shielding element. The magnetic strip support is fitted over the outside of the electromagnetic coil to define the airflow channel. The shielding element is disposed on the outer peripheral wall of the magnetic strip support opposite to the airflow channel and is configured to shield the magnetic field.

20. The cooling and heating unit according to claim 1, characterized in that, It also includes a bracket and a housing. The housing has an air inlet and an air outlet. The electromagnetic coil, the heating element, the first impeller and the axial flow impeller are respectively disposed inside the housing. The housing is rotatably disposed on the bracket.

21. A cooling and heating unit, characterized in that, include: A heating element, wherein the heating element is used to heat air; A centrifugal fan, at least a portion of which is located inside the heating element to drive airflow through the heating element; An axial flow fan is provided on the outside of the heating element and is an integral structure with the centrifugal fan. The axial flow fan is used to deliver air to the side of the heating element away from the centrifugal fan. The heating and cooling unit includes a warm air mode and a cold air mode. In the warm air mode, the heating element heats up, and the centrifugal fan and the axial fan are turned on. In the cold air mode, the heating element is not working, and the centrifugal fan and the axial fan are turned on.

22. The cooling and heating unit according to claim 21, characterized in that, The axial flow impeller includes a mounting base and a plurality of axial flow blades disposed on the mounting base. The mounting base is formed in an annular shape and connected to the centrifugal blades of the centrifugal impeller. A portion of the centrifugal blades extends into the mounting base.

23. The cooling and heating unit according to claim 21, characterized in that, The centrifugal impeller includes a first part and a second part. The first part is located inside the heating element, and the second part is located outside the heating element and connected to the axial flow impeller. The second part supplies air to the side of the heating element away from the first part.

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