Heat pump outdoor unit and heat pump system

Abstract

The present invention discloses a heat pump outdoor unit and a heat pump system, relating to the technical field of heating and ventilation equipment. The heat pump outdoor unit includes an outdoor housing and a heat exchange and exhaust assembly. The indoor housing includes a housing body, a front baffle, and an air outlet frame. The front baffle is disposed between the housing body and the air outlet frame and, together with the housing body and the air outlet frame, defines an installation cavity and an air outlet cavity. The heat exchange and exhaust assembly is disposed in the installation cavity. The front baffle is provided with an air flow outlet. The housing body is provided with an air inlet. The air outlet frame is provided with an air outlet staggered from the air flow outlet. The air outlet frame includes a frame top located at the top. The upper surface of the frame top forms two guide surfaces disposed front and back. The guide surface located at the front side extends downwardly and obliquely from back to front, while the guide surface located at the rear side extends downwardly and obliquely from front to rear. According to the heat pump outdoor unit of the present invention, discomfort caused by the impact of the outlet airflow on the human body can be reduced, and the possibility of external debris accumulating on the frame top can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heating and ventilation equipment, and in particular to a heat pump outdoor unit and a heat pump system. Background Art

[0002] In related technologies, the air outlet of a heat pump outdoor unit is often located in front of the unit. For example, when the unit is installed on a lower floor, the airflow will directly blow onto pedestrians passing in front of the unit, causing discomfort to the pedestrians. This problem needs to be solved. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a heat pump outdoor unit that can reduce the discomfort caused by the impact of the outlet air flow on the human body and reduce the possibility of external debris accumulating on the top of the frame.

[0004] The present invention also provides a heat pump system including the above-mentioned heat pump outdoor unit.

[0005] According to a first embodiment of the present invention, a heat pump outdoor unit comprises: an outdoor casing, comprising a casing body, a front baffle and an air outlet frame, the air outlet frame being arranged on the front side of the casing body, the front baffle being arranged between the casing body and the air outlet frame, the casing body and the front baffle jointly define an installation cavity, the air outlet frame and the front baffle jointly define an air outlet cavity, an air flow outlet being arranged on the front baffle, the air flow outlet being connected to the air outlet cavity and the installation cavity, the casing body being provided with an air inlet being connected to the installation cavity, The air outlet frame is provided with an air outlet connected to the air outlet cavity, and the air outlet is staggered with the air flow outlet. The air outlet frame includes a frame top located at the top, and the upper surface of the frame top is formed with a guide surface, and there are two guide surfaces, and the two guide surfaces are respectively a first guide surface and a second guide surface. The first guide surface is connected to the front side of the second guide surface, and the first guide surface extends downwardly in a direction from back to front, and the second guide surface extends downwardly in a direction from front to back; a heat exchange exhaust component is arranged in the installation cavity.

[0006] According to the heat pump outdoor unit of an embodiment of the present invention, an air outlet frame is provided on the front side of the casing main body, the casing main body and the front partition jointly define an installation cavity, and the air outlet frame and the front partition jointly define the air outlet cavity, so that the air outlet cavity is located on the front side of the casing main body and the air outlet cavity and the installation cavity are separated by the front partition, and the heat exchange exhaust component is provided in the installation cavity. When the heat pump outdoor unit is working, the airflow discharged by the heat exchange exhaust component in the installation cavity is not discharged directly to the outside, but is discharged into the air outlet cavity through the first air flow outlet. The buffering effect of the air outlet cavity can reduce the flow rate and impact force of the outlet airflow, and the outlet airflow after buffering the outlet cavity is discharged to the outside through the air outlet, which can reduce the discomfort caused by the impact of the outlet airflow on the human body. In addition, by extending the first guide surface on the top of the frame in a downwardly inclined direction from the back to the front, and extending the second guide surface in a downwardly inclined direction from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the top of the frame to move toward the front or rear side of the top of the frame under the action of its own gravity, thereby reducing the possibility of external debris accumulating on the top of the frame.

[0007] According to some embodiments of the present invention, the angle between the first guide surface and the horizontal plane is in the range of 15° to 25°; and / or the angle between the second guide surface and the horizontal plane is in the range of 15° to 25°.

[0008] According to some embodiments of the present invention, a heating assembly is included, which is arranged on the air outlet frame and includes a heating element for heating the top of the frame.

[0009] According to some embodiments of the present invention, the heating element is disposed adjacent to the top of the frame and spaced apart from the top of the frame.

[0010] According to some embodiments of the present invention, the heating element is thermally connected to the top of the frame, and a thermally conductive connection layer is provided between the heating element and the top of the frame.

[0011] According to some embodiments of the present invention, the heating element is an electric heating element, and the thermally conductive connection layer is an insulating layer.

[0012] According to some embodiments of the present invention, the heating assembly is disposed in the air outlet cavity; and / or at least a portion of the heating element extends in the left-right direction.

[0013] According to some embodiments of the present invention, the top of the frame is a heat-conducting element; and / or the heating element is an electric heating element.

[0014] According to some embodiments of the present invention, the heating element is provided at the lowest position of the top of the frame; or the heating element is provided at the lowest position of the first guide surface and the lowest position of the second guide surface.

[0015] According to some embodiments of the present invention, the heat pump outdoor unit further includes a temperature sensor for detecting the temperature of the top of the frame or the outdoor ambient temperature. The temperature sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit.

[0016] According to some embodiments of the present invention, the air outlet frame includes a frame portion and a front panel, the frame portion is annular, the frame portion includes a frame top, the front panel cover is arranged on the front side of the frame portion, the frame portion is connected between the front panel and the casing body, and the air outlet is formed in the frame portion.

[0017] According to some embodiments of the present invention, the air outlet includes a first air outlet, the first air outlet is arranged at the top of the frame, and the first air outlet is formed on the guide surface.

[0018] According to some embodiments of the present invention, the first air outlet includes a plurality of first sub-air outlets arranged at intervals, and the cross-sectional area of ​​a single first sub-air outlet is less than 50 mm 2 .

[0019] According to some embodiments of the present invention, the first air outlet includes a plurality of first sub-air outlets spaced apart from each other, and the cross-section of the first sub-air outlet is polygonal or circular, and the number of sides of the polygon is greater than or equal to 4.

[0020] According to some embodiments of the present invention, the heat pump outdoor unit also includes a heating component and an air volume sensor, the heating component is arranged on the air outlet frame and includes a heating element for heating the top of the frame, the air volume sensor is used to detect the air outlet volume at the top of the frame, and the air volume sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit.

[0021] According to some embodiments of the present invention, the air volume sensor is located between the highest position and the lowest position of the guide surface.

[0022] According to some embodiments of the present invention, the frame portion includes a frame bottom located at the bottom, the air outlet includes a second air outlet, the second air outlet is arranged at the frame bottom, and at least a portion of the second air outlet constitutes a drain outlet.

[0023] According to some embodiments of the present invention, the frame portion includes the frame top, the frame bottom and the frame side, the frame top is located at the top of the frame portion, the frame bottom is located at the bottom of the frame portion, the frame side is connected to the left and right sides of the frame top and the frame bottom, and the air outlet includes a third air outlet, and the third air outlet is arranged on the frame side.

[0024] According to some embodiments of the present invention, the first air outlet includes a plurality of first sub-air outlets arranged at intervals, the third air outlet includes a plurality of third sub-air outlets arranged at intervals, and the cross-sectional area of ​​a single first sub-air outlet is smaller than the cross-sectional area of ​​a single third sub-air outlet.

[0025] According to some embodiments of the present invention, the outdoor casing includes a middle partition, which is arranged in the casing main body to separate the installation cavity into a first installation cavity and a second installation cavity arranged along the left and right directions. The heat exchange and exhaust assembly includes an outdoor heat exchanger, an outdoor fan and a compressor. The outdoor heat exchanger and the outdoor fan are arranged in the first installation cavity, the compressor is arranged in the second installation cavity, and the air inlet and the air outlet cavity are both connected to the first installation cavity.

[0026] According to some embodiments of the present invention, the projection of the first installation cavity on the reference plane is a first projection, the projection of the second installation cavity on the reference plane is a second projection, the projection of the air outlet cavity on the reference plane is a third projection, at least part of the first projection coincides with the third projection, at least part of the second projection coincides with the third projection, and the reference plane is a plane perpendicular to the front-to-back direction.

[0027] According to some embodiments of the present invention, a depth dimension of the air outlet cavity in the front-to-back direction is smaller than a depth dimension of the installation cavity in the front-to-back direction.

[0028] According to some embodiments of the present invention, a ratio of a depth dimension of the air outlet cavity in the front-to-back direction to a depth dimension of the installation cavity in the front-to-back direction is in a range of 0.1 to 0.5.

[0029] According to some embodiments of the present invention, the air outlet frame is detachably connected to the casing body.

[0030] A heat pump system according to an embodiment of a second aspect of the present invention includes: a heat pump indoor unit; and a heat pump outdoor unit according to the embodiment of the first aspect of the present invention.

[0031] According to the heat pump system of an embodiment of the present invention, the above-mentioned heat pump outdoor unit is provided, and an air outlet frame is set on the front side of the casing main body. The casing main body and the front partition jointly define the installation cavity, and the air outlet frame and the front partition jointly define the air outlet cavity, so that the air outlet cavity is located on the front side of the casing main body and the air outlet cavity and the installation cavity are separated by the front partition, and the heat exchange exhaust component is set in the installation cavity. When the heat pump outdoor unit is working, the airflow discharged by the heat exchange exhaust component in the installation cavity is not discharged directly to the outside, but is discharged into the air outlet cavity through the air outlet first. The buffering effect of the air outlet cavity can reduce the flow rate and impact force of the outlet airflow, and the outlet airflow after buffering the outlet cavity is discharged to the outside through the air outlet, which can reduce the discomfort caused by the impact of the outlet airflow on the human body. In addition, by extending the first guide surface on the top of the frame in a downwardly inclined direction from the back to the front, and extending the second guide surface in a downwardly inclined direction from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the top of the frame to move toward the front or rear side of the top of the frame under the action of its own gravity, thereby reducing the possibility of external debris accumulating on the top of the frame.

[0032] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0034] Figure 1 is a schematic perspective view of a heat pump outdoor unit according to some embodiments of the present invention;

[0035] Figure 2 yes Figure 1 The main view of the heat pump outdoor unit;

[0036] Figure 3 yes Figure 1 A top view of the heat pump outdoor unit;

[0037] Figure 4 yes Figure 1 A side view of the heat pump outdoor unit;

[0038] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the air outlet frame of the heat pump outdoor unit;

[0039] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0040] Figure 7 yes Figure 5 A three-dimensional schematic diagram of the air outlet frame from another angle;

[0041] Figure 8 yes Figure 5 A side view of the air outlet frame in FIG.

[0042] Figure 9 yes Figure 8 Enlarged view of point B in the middle;

[0043] Figure 10 yes Figure 5 A top view of the air outlet frame in FIG.

[0044] Figure 11 yes Figure 10 Enlarged view of point C in the middle.

[0045] Reference numerals:

[0046] 100. Heat pump outdoor unit;

[0047] 10. Outdoor housing;

[0048] 1. Casing body; 11. Air inlet;

[0049] 2. Front baffle; 21. Airflow outlet;

[0050] 3. Air outlet frame; 31. Air outlet cavity; 311. First air outlet; 3111. First sub-air outlet; 312. Second air outlet; 3121. Second sub-air outlet; 313. Third air outlet; 3131. Third sub-air outlet; 33. Frame; 331. Frame top; 3312. First guide surface; 3313. Second guide surface; 332. Frame bottom; 333. Frame side; 34. Front panel. DETAILED DESCRIPTION

[0051] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0052] Reference below Figures 1-11 A heat pump outdoor unit 100 according to an embodiment of the present invention will be described.

[0053] Reference Figure 1-Figure 4According to the heat pump outdoor unit 100 of the first embodiment of the present invention, it includes an outdoor casing 10 and a heat exchange and exhaust assembly. The outdoor casing 10 includes a casing body 1, a front partition 2 and an air outlet frame 3. The air outlet frame 3 is arranged on the front side of the casing body 1, and the front partition 2 is arranged between the casing body 1 and the air outlet frame 3. The casing body 1 and the front partition 2 jointly define an installation cavity. The air outlet frame 3 and the front partition 2 jointly define an air outlet cavity 31. The front partition 2 is provided with an air flow outlet 21, and the air flow outlet 21 connects the air outlet cavity 31 and the installation cavity. The casing body 1 is provided with an air inlet 11 connected with the installation cavity, the air outlet frame 3 is provided with an air outlet connected with the air outlet cavity 31, and the heat exchange and exhaust assembly is arranged in the installation cavity.

[0054] When the heat pump outdoor unit 100 is working, external air enters the installation cavity through the air inlet 11 and flows to the heat exchange and exhaust component. The air after heat exchange by the heat exchange and exhaust component flows to the air outlet cavity 31 through the air flow outlet 21, and then flows out from the air outlet to the outside of the heat pump outdoor unit 100.

[0055] By placing the heat exchange and exhaust assembly within the mounting cavity, the heat exchange and air supply assembly can heat the airflow entering the mounting cavity and direct the heat-exchanged airflow to the airflow outlet 21, allowing the heat-exchanged airflow to flow smoothly out of the airflow outlet 21. The airflow outlet 21 connects the air outlet cavity 31 with the mounting cavity, allowing the airflow within the mounting cavity to flow smoothly into the air outlet cavity 31 and then be discharged from the air outlet.

[0056] The air outlet frame 3 is arranged on the front side of the casing main body 1, the casing main body 1 and the front partition 2 jointly define the installation cavity, and the air outlet frame 3 and the front partition 2 jointly define the air outlet cavity 31, the heat exchange exhaust component is arranged in the installation cavity and the air outlet frame 3 is provided with an air outlet connected to the air outlet cavity 31, the air outlet cavity 31 and the installation cavity can be arranged in order, reducing the space occupied by the air outlet cavity 31 in the installation cavity, which is beneficial to the layout optimization in the installation cavity; and, the air outlet frame 3 and the front partition 2 jointly define the air outlet cavity 31, the flow cross-section of the gas in the air outlet cavity 31 can be made larger than the flow cross-section of the air flow at the airflow outlet 21, so that when the air flow rate is constant, the flow cross-section of the gas in the air outlet cavity 31 is larger than the flow cross-section of the air flow at the airflow outlet 21, which can play a buffering role for the airflow flowing out of the airflow outlet 21, can reduce or avoid the airflow directly impacting the human body at an excessively high flow rate, thereby reducing the discomfort of the human body and helping to improve the user experience.

[0057] Furthermore, the air outlet is staggered with the airflow outlet 21. The staggered arrangement of the air outlet and the airflow outlet 21 can change the flow direction and flow path of the airflow within the air outlet cavity 31. After the airflow flows into the air outlet cavity 31 from the airflow outlet 21, it changes its flow direction and flow path before being discharged through the air outlet. This change can further reduce the impact of the airflow, thereby reducing the discomfort caused by the direct impact of the airflow on the human body.

[0058] The air outlet frame 3 includes a frame top 331 at the top. The upper surface of the frame top 331 is formed with two guide surfaces: a first guide surface 3312 and a second guide surface 3313. The first guide surface 3312 is connected to the front side of the second guide surface 3313. The first guide surface 3312 extends downwardly and obliquely from the back to the front, while the second guide surface 3313 extends downwardly and obliquely from the front to the back. With the first guide surface 3312 extending downwardly and obliquely from the back to the front, and the second guide surface 3313 extending downwardly and obliquely from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the frame top 331 toward the front or rear of the frame top 331 under the action of its own weight, thereby reducing the possibility of external debris accumulating on the frame top 331. For example, external debris that falls on the front of the frame top 331 can quickly slide toward the front side of the frame top 331 along the first guide surface 3312, and external debris that falls on the rear of the frame top 331 will quickly slide toward the rear side of the frame top 331 along the second guide surface 3313, which can reduce the possibility of external debris accumulating on the frame top 331 and blocking the air outlet of the frame top 331.

[0059] For example, in rainy and snowy weather, the first guide surface 3312 extends downwardly from the back to the front, and the second guide surface 3313 extends downwardly from the front to the back, so that rain and snow can be dispersed to the front and back sides of the frame top 331 more quickly. The rain and snow near the front side of the frame top 331 can quickly slide down to the front side of the frame top 331 along the first guide surface 3312, and the rain and snow near the back side of the frame top 331 can quickly slide down to the back side of the frame top 331 along the second guide surface 3313, and can be discharged from the front and back sides of the frame top 331 at the same time. Compared with discharging from only one side of the front or back side of the frame top 331, the possibility of rain and snow accumulating on the frame top 331 and blocking the air outlet of the frame top 331 can be reduced.

[0060] According to the heat pump outdoor unit 100 of an embodiment of the present invention, an air outlet frame 3 is provided on the front side of the casing main body 1, the casing main body 1 and the front partition 2 jointly define an installation cavity, and the air outlet frame 3 and the front partition 2 jointly define an air outlet cavity 31, so that the air outlet cavity 31 is located on the front side of the casing main body 1 and the air outlet cavity 31 is separated from the installation cavity by the front partition 2, and the heat exchange exhaust component is provided in the installation cavity. When the heat pump outdoor unit 100 is working, the airflow discharged by the heat exchange exhaust component in the installation cavity is not discharged directly to the outside, but is discharged into the air outlet cavity 31 through the first air flow outlet 21. The buffering effect of the air outlet cavity 31 can reduce the flow rate and impact force of the outlet airflow. The outlet airflow buffered by the outlet cavity 31 is discharged to the outside through the air outlet, which can reduce the discomfort caused by the impact of the outlet airflow on the human body. In addition, by extending the first guide surface 3312 of the frame top 331 in a downwardly inclined direction from the back to the front, and extending the second guide surface 3313 in a downwardly inclined direction from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the frame top 331 to move toward the front or rear side of the frame top 331 under the action of its own gravity, thereby reducing the possibility of external debris accumulating on the frame top 331.

[0061] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the angle α1 between the first guide surface 3312 and the horizontal plane ranges from 15° to 25°. For example, the angle α1 between the first guide surface 3312 and the horizontal plane can be 15°, 17°, 20°, 22°, 25°, etc. By ensuring that the angle α1 between the first guide surface 3312 and the horizontal plane is not less than 15°, the first guide surface 3312 can effectively guide external debris on the frame top 331, thereby reducing or avoiding the possibility of external debris accumulating on the frame top 331 and blocking the air outlet of the frame top 331; by ensuring that the angle α1 between the first guide surface 3312 and the horizontal plane is not greater than 25°, the airflow can flow out of the air outlet of the frame top 331 more smoothly, thereby reducing the flow resistance of the airflow out of the air outlet of the frame top 331.

[0062] For example, if the angle α1 between the first guide surface 3312 and the horizontal plane is too large, the angle between the air outlet at the frame top 331 and the horizontal plane may be too large. Such a large angle between the air outlet at the frame top 331 and the horizontal plane may cause a sudden change in the airflow cross-section, thereby increasing the flow resistance of the airflow. By setting the angle α1 between the first guide surface 3312 and the horizontal plane to no greater than 25°, the airflow can flow more smoothly out of the air outlet at the frame top 331. By setting the angle α1 between the first guide surface 3312 and the horizontal plane to a range of 15° to 25°, a good balance can be achieved between the first guide surface 3312's function of guiding external debris from the frame top 331 and the smoothness of the airflow.

[0063] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the angle α2 between the second guide surface 3313 and the horizontal plane ranges from 15° to 25°. For example, the angle α2 between the second guide surface 3313 and the horizontal plane can be 15°, 17°, 20°, 22°, 25°, etc. By ensuring that the angle α2 between the second guide surface 3313 and the horizontal plane is not less than 15°, the second guide surface 3313 can effectively guide external debris on the frame top 331, thereby reducing or avoiding the possibility of external debris accumulating on the frame top 331 and blocking the air outlet of the frame top 331; by ensuring that the angle α2 between the second guide surface 3313 and the horizontal plane is not greater than 25°, the airflow can flow out of the air outlet of the frame top 331 more smoothly, thereby reducing the flow resistance of the airflow out of the air outlet of the frame top 331.

[0064] For example, if the angle α2 between the second guide surface 3313 and the horizontal plane is too large, the angle between the air outlet at the frame top 331 and the horizontal plane may be too large. Such a large angle between the air outlet at the frame top 331 and the horizontal plane may cause a sudden change in the airflow cross-section, thereby increasing the flow resistance of the airflow. By setting the angle α2 between the second guide surface 3313 and the horizontal plane to no greater than 25°, the airflow can flow more smoothly out of the air outlet at the frame top 331. By setting the angle α2 between the second guide surface 3313 and the horizontal plane to a range of 15° to 25°, a good balance can be achieved between the second guide surface 3313's function of guiding external debris from the frame top 331 and the smoothness of the airflow.

[0065] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the guide surface extends downwardly and obliquely in the front-to-back direction. By forming the guide surface as a structure extending downwardly and obliquely in the front-to-back direction, debris that falls on the guide surface can slide downwardly and in the front-to-back direction, thereby reducing the possibility of foreign debris accumulating on the frame top 331 and blocking the first air outlet 311 of the frame top 331.

[0066] Reference Figure 5-Figure 9 According to some embodiments of the present invention, a heating assembly is provided on the air outlet frame 3 and includes a heating element for heating the frame top 331. For example, on snowy days or when the ambient temperature is low, frost or ice is likely to form on the frame top 331. By providing the heating assembly on the air outlet frame 3 and including a heating element for heating the frame top 331, the frame top 331 is heated by the heating element, so that the temperature of the frame top 331 is increased, thereby allowing the snow, frost or ice accumulated on the frame top 331 to quickly melt into water and be discharged, thereby reducing the air outlet of the frame top 331 from being blocked and affecting the air outlet efficiency, so that the air flow can flow out of the air outlet of the frame top 331 more smoothly.

[0067] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the heating element is an electric heating element. By configuring the heating element as an electric heating element, it is convenient to control the start and stop of the heating element, and the heating power of the heating element can also be adjusted, making the control of the heating element more convenient and flexible. The electric heating element can generate heat relatively quickly to heat the frame top 331, and the electric heating element itself can also achieve relatively precise power adjustment, thereby accurately controlling the heating amount.

[0068] For example, the heating element may be in the shape of a heating wire, a heating strip, a heating sheet, a heating mesh, etc.

[0069] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the frame top 331 is a heat conductor, and the heat of the heating element is transferred to the frame top 331. Since the frame top 331 is a heat conductor, the heat can be quickly conducted at the frame top 331, so that the overall temperature of the frame top 331 is relatively uniform, avoiding excessive local heat at the frame top 331 affecting the structural strength of the frame top 331, and avoiding insufficient local heat at the frame top 331 affecting the ice-melting or defrosting effect, so that the overall ice-melting or defrosting effect of the frame top 331 can be better, and the risk of the air outlet being partially or completely blocked can be better reduced.

[0070] Reference Figure 5-Figure 8 According to some embodiments of the present invention, the heater is positioned adjacent to the frame top 331 and spaced apart from the frame top 331. Heat transfer between the frame top 331 and the heater can be achieved through thermal radiation or convection. For example, the airflow from the air outlet can carry the heat generated by the heater to the frame top 331 to heat the frame top 331. By spacing the heater apart from the frame top 331, the impact of the heater on the frame top 331 can be reduced, and the material selection for the frame top 331 can be less restricted. For example, the frame top 331 can be made of metal or plastic. When the frame top 331 is made of plastic, spacing the heater apart from the frame top 331 can reduce the impact of the high temperature of the heater on the structural strength of the frame top 331. When the frame top 331 is made of metal, spacing the heater apart from the frame top 331 can reduce or avoid safety risks caused by electrical contact between the heater and the frame top 331 if the heater is an electric heater.

[0071] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the heating element is thermally connected to the frame top 331, so that the heat generated by the heating element can be transferred to the frame top 331 by heat conduction to heat the frame top 331, which can improve the heating efficiency of the heating element on the frame top 331 and reduce heat loss during the transfer process.

[0072] For example, a thermally conductive connection layer may be provided between the heater and the frame top 331 , and the heat generated by the heater may be thermally conducted to the frame top 331 through the thermally conductive connection layer. For example, the thermally conductive connection layer may be a thermally conductive adhesive layer.

[0073] In some embodiments, the heating element is an electric heating element, and the heat-conducting connection layer can be an insulating layer. When the heating element is an electric heating element, by setting the heat-conducting connection layer as an insulating layer, the safety risk caused by the electrical contact between the heating element and the frame top 331 can be reduced or avoided.

[0074] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the heating assembly is disposed within the air outlet cavity 31. By locating the heating assembly within the air outlet cavity 31, the air outlet frame 3 can provide a certain degree of protection for the heating assembly, reducing the possibility of damage to the heating assembly due to external impacts, etc., thereby extending the service life of the heating assembly. Furthermore, since the heating assembly is located within the air outlet cavity 31, it is also disposed within the outdoor housing 10. This improves safety compared to disposing the heating assembly outside the outdoor housing 10 and reduces the safety risks caused by accidental contact with the heating assembly.

[0075] In addition, when the heating component is arranged in the air outlet cavity 31, the heat generated by the heating element can pass through the frame top 331 through the air flow of the air outlet, thereby heating the frame top 331 and the space near the frame top 331, increasing the heating space range, and further reducing the risk of the air outlet being partially or completely blocked due to ice formation on the frame top 331, further ensuring the air outlet area and air outlet smoothness of the air outlet.

[0076] Reference Figure 5-Figure 9 According to some embodiments of the present invention, at least a portion of the heating assembly extends in the left-right direction. The term "at least a portion of the heating assembly extends in the left-right direction" may include, for example, a portion of the heating assembly extends in the left-right direction; or, for another example, the entire heating assembly extends in the left-right direction.

[0077] By extending at least part of the heating element in the left-right direction, a larger area in the left-right direction of the frame top 331 can be covered to heat a larger area of ​​the frame top 331, effectively preventing rainwater from freezing or snow accumulation on the frame top 331, thereby allowing air to flow smoothly out from the first air outlet 311 of the frame top 331.

[0078] Reference Figure 5-Figure 9According to some embodiments of the present invention, a heating element is provided at the lowest position of the frame top 331. The lowest position of the frame top 331 is an area where external debris (such as rain, snow, and condensed water) easily accumulates due to its own gravity. It is also an area where the first air outlet 311 of the frame top 331 is more likely to be blocked by freezing of accumulated water. By providing a heating element at the lowest position of the frame top 331, this area can be directly heated up quickly, causing the accumulated snow, ice, or frost to quickly melt and be discharged, thereby ensuring smooth airflow at the lowest position of the frame top 331 and preventing the airflow at the lowest position of the frame top 331 from being blocked.

[0079] Reference Figure 5-Figure 9 According to some embodiments of the present invention, a heating element is provided at the lowest point of the first guide surface 3312 and the lowest point of the second guide surface 3313. The first guide surface 3312 extends downwardly and tilted from back to front, while the second guide surface 3313 extends downwardly and tilted from front to back. This allows rainwater, snow, and the like falling on the frame top 331 to flow rapidly forward and backward along the first guide surface 3312 and the second guide surface 3313, respectively, to the front and rear sides of the frame top 331. The lowest points of the two guide surfaces are the converging points of the water flow and are also the locations where ice, frost, or snow accumulates most. By providing heating elements at the lowest points of the first guide surface 3312 and the second guide surface 3313, ice, frost, or snow accumulated at the lowest points of the guide surfaces can be heated promptly, ensuring unobstructed flow of the first air outlet 311 of the frame top 331 and reducing the risk of air flow blockage at the frame top 331.

[0080] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the heat pump outdoor unit 100 further includes a temperature sensor for detecting the temperature of the frame top 331 or the outdoor ambient temperature. The temperature sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit 100. For example, the temperature sensor may be installed in the air outlet cavity 31 and adjacent to the frame top 331, so that the temperature of the frame top 331 can be detected more promptly and accurately. For another example, the temperature sensor may be installed on the upper surface of the frame top 331 to detect the outdoor ambient temperature around the frame top 331 more promptly and accurately.

[0081] By providing a temperature sensor for detecting the temperature of the frame top 331 or the outdoor ambient temperature, the temperature sensor transmits the detected temperature information to the controller of the heat pump outdoor unit 100. The controller of the heat pump outdoor unit 100 can timely control the heating element according to the temperature of the frame top 331 or the outdoor ambient temperature measured by the temperature sensor. For example, the heating element can be controlled to start or stop, or the power of the heating element can be adjusted after the heating element is turned on. While heating the frame top 331, energy waste can be reduced and efficient operation of the heating element can be achieved.

[0082] For example, when the temperature sensor detects that the temperature of the frame top 331 or the outdoor ambient temperature is low, it indicates that the frame top 331 has a greater risk of ice or frost, which may cause blockage of the first air outlet 311. At this time, the controller of the heat pump outdoor unit 100 can control the heating element to turn on to achieve ice, frost or snow melting on the frame top 331. After ice, frost or snow melting is completed, the controller of the heat pump outdoor unit 100 can control the heating element to turn off. In addition, when the heating element is turned on to melt ice, frost or snow on the frame top 331, the heating power of the heating element can be adjusted according to the temperature of the frame top 331 or the outdoor ambient temperature. For example, the lower the temperature of the frame top 331 or the outdoor ambient temperature, the greater the heating power can be adjusted.

[0083] Reference Figure 3-Figure 5 According to some embodiments of the present invention, the air outlet frame 3 includes a frame portion 33 and a front panel 34. The frame portion 33 is annular. The front panel 34 is covered on the front side of the frame portion 33. The frame portion 33 is connected between the front panel 34 and the casing body 1, and the air outlet is formed in the frame portion 33.

[0084] The frame 33 can support the front panel 34. The front panel 34 is covered on the front side of the frame 33 to shield the structure inside the air outlet frame 3, thereby improving the overall aesthetics of the heat pump outdoor unit 100. The air outlet is formed in the frame 33, so that the air flow can be discharged through the periphery of the heat pump outdoor unit 100. For example, the air flow can be discharged from the top, side, or bottom of the heat pump outdoor unit 100, avoiding the discomfort caused by the air flow blowing directly from the front to the human body.

[0085] For example, when the heat pump outdoor unit 100 in the related art is installed on the first floor and faces the road, the airflow after heat exchange is blown out from the front side of the heat pump outdoor unit 100, which may blow onto pedestrians passing by, causing discomfort to pedestrians. Especially in the hot summer, the hot air after heat exchange blows onto pedestrians, which aggravates the discomfort. By forming the air outlet in the frame portion 33, the airflow can be discharged through the side of the heat pump outdoor unit 100, which can effectively reduce the discomfort caused by the airflow blowing directly from the front side of the heat pump outdoor unit 100 onto pedestrians.

[0086] Reference Figure 5-Figure 9According to some embodiments of the present invention, the frame portion 33 includes a frame top portion 331 located at the top, and the air outlet includes a first air outlet 311, and the first air outlet 311 is arranged at the frame top portion 331. By arranging the first air outlet 311 at the frame top portion 331, the airflow can be discharged more smoothly from the frame top portion 331 to the outside of the heat pump outdoor unit 100. For example, in hot summer, the temperature of the airflow after heat exchange in the heat pump outdoor unit 100 is relatively high. According to the physical property that hot air rises, the airflow with a higher temperature will flow upward. By arranging at least a portion of the air outlet at the frame top portion 331, this part of the airflow with a higher temperature can be facilitated to flow out of the air outlet to the outside of the heat pump outdoor unit 100 more smoothly, and the discomfort caused by the airflow to the human body can be reduced.

[0087] Reference Figure 10 and Figure 11 According to some embodiments of the present invention, the first air outlet 311 includes a plurality of first sub-air outlets 3111 spaced apart, and the cross-sectional area of ​​a single first sub-air outlet 3111 is less than 50 mm 2 For example, the cross-sectional area of ​​a single first sub-air outlet 3111 may be 10 mm 2 , 20 mm 2 , 30 mm 2 , 40 mm 2 wait.

[0088] By making the cross-sectional area of ​​a single first sub-air outlet 3111 less than 50 mm 2 , the cross-sectional area of ​​the first sub-air outlet 3111 can be made smaller. The smaller cross-sectional area of ​​the first sub-air outlet 3111 can effectively prevent larger foreign objects (such as leaves, branches, etc.) from entering the interior of the heat pump outdoor unit 100. If the cross-sectional area of ​​the first sub-air outlet 3111 is larger, these foreign objects are likely to enter the interior of the heat pump outdoor unit 100, and then damage the outdoor heat exchanger or outdoor fan inside the heat pump outdoor unit 100. By making the cross-sectional area of ​​the first sub-air outlet 3111 smaller to effectively prevent larger foreign objects from entering, the cost of repairing faults caused by foreign objects entering the interior of the heat pump outdoor unit 100 can be reduced.

[0089] In the description of the present invention, "plurality" means two or more.

[0090] Reference Figure 10 and Figure 11 According to some embodiments of the present invention, the first air outlet 311 includes a plurality of first sub-air outlets 3111 spaced apart from each other, and the cross-section of the first sub-air outlet 3111 is polygonal or circular, and the number of sides of the polygon is greater than or equal to 4.

[0091] For example, the cross-section of the first sub-air outlet 3111 is circular. When the circumference of the first sub-air outlet 3111 is constant, the cross-sectional area of ​​the first sub-air outlet 3111 with a circular cross-section is the largest. In this way, the total flow cross-section of the first sub-air outlet 3111 at the top of the frame 331 can be larger, which is conducive to the smooth outflow of air from the top of the frame 331.

[0092] For another example, the cross-section of the first sub-air outlet 3111 is a polygon. The cross-section of the first sub-air outlet 3111 can be a quadrilateral, a pentagon, a hexagon, a heptagon or an octagon. Since the cross-section of the first sub-air outlet 3111 is a polygon and the number of sides of the polygon is greater than or equal to 4, the first sub-air outlets 3111 with a polygonal cross-section can be arranged more closely. When the area of ​​the frame top 331 is constant, the number of first sub-air outlets 3111 can be larger, so that the total air outlet area of ​​the first sub-air outlets 3111 at the frame top 331 can be larger, which is beneficial to increase the air outlet area of ​​the frame top 331.

[0093] In some embodiments, the cross-section of the first sub-air outlet 3111 is a regular hexagon, and the regular hexagons can be arranged closely. When the area of ​​the frame top 331 is constant, the number of first sub-air outlets 3111 can be large, so that the air outlet area of ​​the frame top 331 is larger, and the spacing between adjacent first sub-air outlets 3111 is more uniform, so that the frame top 331 as a whole has a stronger structural strength, and can better balance the air outlet area of ​​the frame top 331 and the structural strength of the frame top 331.

[0094] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the heat pump outdoor unit 100 further includes a heating assembly and an air volume sensor. The heating assembly is disposed on the air outlet frame 3 and includes a heating element for heating the frame top 331. The air volume sensor is used to detect the air volume discharged from the frame top 331. The air volume sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit 100. For example, the air volume sensor can be disposed on the upper surface of the frame top 331 to more accurately detect the air volume discharged from the first air outlet 311 of the frame top 331. By providing an air volume sensor for detecting the air volume at the top of the frame 331, the air volume sensor transmits the air volume information of the detected first air outlet 311 to the controller of the heat pump outdoor unit 100. The controller of the heat pump outdoor unit 100 can timely control the heating element according to the air volume of the first air outlet 311 at the top of the frame 331 measured by the air volume sensor. For example, the heating element can be controlled to start or stop, or the power of the heating element can be adjusted after the heating element is turned on, so as to effectively reduce the possibility that the first air outlet 311 at the top of the frame 331 is blocked by snow, ice or frost, so that the airflow can flow out from the first air outlet 311 at the top of the frame 331 more smoothly.

[0095] For example, when the air volume measured by the air volume sensor to the first air outlet 311 at the top of the frame 331 is low, it indicates that the first air outlet 311 at the top of the frame 331 may be at least partially blocked due to frost, ice, or snow accumulation. In this case, the controller of the heat pump outdoor unit 100 can control the heating element to turn on to melt ice, frost, or snow from the top of the frame 331. After the ice, frost, or snow melting is completed, for example, when the air volume sensor detects that the air volume at the first air outlet 311 at the top of the frame 331 has returned to a normal range, the controller of the heat pump outdoor unit 100 can control the heating element to turn off. In addition, when the heating element is turned on to melt ice, frost, or snow from the top of the frame 331, the heating power of the heating element can be adjusted based on the air volume measured by the air volume sensor. For example, the lower the air volume measured by the air volume sensor, the greater the heating power can be adjusted.

[0096] According to some embodiments of the present invention, an air volume sensor is disposed on the guide surface and is located between the highest and lowest positions of the guide surface. This can avoid detection deviations caused by excessive airflow diffusion at the highest position of the frame top 331, and also prevent the airflow at the lowest position of the frame top 331 from being constrained by the guide surface and affecting the local flow rate. By locating the air volume sensor between the highest and lowest positions of the guide surface, the accuracy of the measured air volume data can be improved.

[0097] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the frame portion 33 includes a frame bottom portion 332 located at the bottom, including a second air outlet 312. The second air outlet 312 is disposed at the frame bottom portion 332, and at least a portion of the second air outlet 312 constitutes a drain outlet. The at least a portion of the second air outlet 312 constituting the drain outlet may include the following situations: for example, a portion of the second air outlet 312 may constitute the drain outlet; or, for another example, the entire second air outlet 312 may constitute the drain outlet.

[0098] By providing a second air outlet 312 at the bottom 332 of the frame, the air outlet area can be increased, and it can also serve as a drain outlet. In this way, water flowing downward from the top 331 of the frame into the air outlet cavity 31 can be discharged through the second air outlet 312 or the drain outlet at the bottom 332 of the frame, thereby preventing water falling into the air outlet cavity 31 from accumulating in the air outlet cavity 31.

[0099] Reference Figure 5-Figure 9According to some embodiments of the present invention, the frame portion 33 includes a frame top 331, a frame bottom 332, and a frame side portion 333. The frame top 331 is located at the top of the frame portion 33, the frame bottom 332 is located at the bottom of the frame portion 33, and the frame side portion 333 connects the left and right sides of the frame top 331 and the frame bottom 332. The air outlet includes a third air outlet 313, which is provided on the frame side portion 333. The first air outlet 311 of the frame top 331 facilitates the upward discharge of higher-temperature air. The third air outlet 313 of the frame side portion 333 increases the air outlet area from the side of the heat pump outdoor unit 100, preventing airflow from accumulating at the side and further improving the overall air outlet efficiency. By forming air outlets on both the frame top 331 and the frame side portion 333, the air outlet area can be increased, improving the overall air outlet efficiency of the heat pump outdoor unit 100. It can also prevent airflow from directly impacting the human body at an excessively high flow rate from the front side of the frame portion 33, thereby reducing human discomfort.

[0100] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the first air outlet 311 includes a plurality of first sub-air outlets 3111 spaced apart from each other, and the third air outlet 313 includes a plurality of third sub-air outlets 3131 spaced apart from each other. The cross-sectional area of ​​a single first sub-air outlet 3111 is smaller than the cross-sectional area of ​​a single third sub-air outlet 3131. The smaller cross-sectional areas of the multiple first sub-air outlets 3111 on the frame top 331 can effectively prevent external foreign matter from directly entering the air outlet cavity 31. The larger cross-sectional areas of the third sub-air outlets 3131 on the frame side 333 can enable airflow to be discharged more smoothly from the side to the exterior of the heat pump outdoor unit 100, thereby improving the air outlet efficiency of the heat pump outdoor unit 100.

[0101] Reference Figure 5-Figure 9 According to some embodiments of the present invention, the air outlet is arranged around the frame 33, so that the air flow can be discharged from multiple directions of the frame 33 to the outside of the heat pump outdoor unit 100, which can increase the air outlet area, improve the air outlet efficiency, and reduce the discomfort caused by the impact of the air flow on the human body.

[0102] Reference Figure 1-Figure 4 According to some embodiments of the present invention, the outdoor casing 10 includes a middle partition, which is arranged in the casing body 1 to divide the installation cavity into a first installation cavity and a second installation cavity arranged along the left and right directions. The heat exchange and exhaust assembly includes an outdoor heat exchanger, an outdoor fan and a compressor. The outdoor heat exchanger and the outdoor fan are arranged in the first installation cavity, the compressor is arranged in the second installation cavity, and the air inlet 11 and the air outlet cavity 31 are both connected to the first installation cavity.

[0103] By dividing the installation cavity into a first installation cavity and a second installation cavity through a middle partition, the outdoor heat exchanger and the outdoor fan in the first installation cavity can be separated from the compressor in the second installation cavity, so that the outdoor heat exchanger, the outdoor fan and the compressor are arranged in an orderly manner, and interference between the outdoor heat exchanger, the outdoor fan and the compressor can be avoided. By arranging the compressor, the outdoor heat exchanger and the outdoor fan in different cavities respectively, the interference of the compressor on the outdoor heat exchanger and the outdoor fan can be reduced.

[0104] Since the air inlet 11 and the air outlet cavity 31 are both connected to the first installation cavity, external air can enter the first installation cavity through the air inlet 11 to exchange heat with the outdoor heat exchanger. Driven by the outdoor fan, the airflow after heat exchange can flow into the air outlet cavity 31 through the airflow outlet 21 for buffering and then be discharged to the outside of the heat pump outdoor unit 100, thereby reducing the discomfort caused by the impact of the outlet airflow on the human body.

[0105] Furthermore, the central partition divides the installation chamber into a first installation chamber and a second installation chamber. This partitioning design facilitates maintenance and repair of each component. Maintenance personnel can open the corresponding chamber for inspection and repair without having to perform a large-scale disassembly of the entire heat pump outdoor unit 100. For example, if the outdoor fan fails, only the relevant part of the first installation chamber needs to be opened for inspection, without affecting the compressor in the second installation chamber. This greatly shortens maintenance time and improves maintenance efficiency.

[0106] Reference Figure 1-Figure 4 According to some embodiments of the present invention, the projection of the first installation cavity on the reference plane is the first projection, the projection of the second installation cavity on the reference plane is the second projection, and the projection of the air outlet cavity 31 on the reference plane is the third projection. At least a portion of the first projection overlaps with the third projection, and at least a portion of the second projection overlaps with the third projection. The reference plane is a plane perpendicular to the front-to-back direction. The overlap of at least a portion of the first projection with the third projection may include the following situations: for example, a portion of the first projection may overlap with the third projection; or as another example, the entire first projection may overlap with the third projection. The overlap of at least a portion of the second projection with the third projection may include the following situations: for example, a portion of the second projection may overlap with the third projection; or as another example, the entire second projection may overlap with the third projection.

[0107] By making at least a portion of the first projection coincide with the third projection, at least a portion of the air cavity 31 can be opposite to the first installation cavity in the front-to-back direction, and by making at least a portion of the second projection coincide with the third projection, at least a portion of the air cavity 31 can be opposite to the second installation cavity in the front-to-back direction, so that the air outlet cross-sectional area of ​​the air cavity 31 can be made larger. In this way, when the airflow in the first installation cavity flows into the air outlet cavity 31 with a larger air outlet cross-sectional area through the airflow outlet 21, the flow area of ​​the airflow is increased, and the flow velocity and impact force of the airflow flowing into the air outlet cavity 31 can be effectively reduced, so that the airflow flowing into the air outlet cavity 31 can be better buffered. In this way, after the airflow buffered by the air outlet cavity 31 is discharged from the air outlet, the discomfort caused by the impact on the human body can be better reduced.

[0108] Reference Figure 1-Figure 4 According to some embodiments of the present invention, the depth of the air outlet cavity 31 in the front-to-back direction is smaller than the depth of the installation cavity in the front-to-back direction. By making the depth of the air outlet cavity 31 smaller than the depth of the installation cavity in the front-to-back direction, the airflow flowing out of the air outlet 21 in the air outlet cavity 31 is buffered, and the overall front-to-back dimensions of the heat pump outdoor unit 100 can be made smaller, thereby reducing the space occupied by the heat pump outdoor unit 100.

[0109] Reference Figure 1-Figure 4 According to some embodiments of the present invention, the ratio of the depth of the air outlet cavity 31 in the front-to-back direction to the depth of the installation cavity in the front-to-back direction ranges from 0.1 to 0.5. For example, the ratio of the depth of the air outlet cavity 31 in the front-to-back direction to the depth of the installation cavity in the front-to-back direction can be 0.1, 0.2, 0.3, 0.4, 0.5, etc. By making the ratio of the depth dimension of the air outlet chamber 31 in the front-to-back direction to the depth dimension of the installation chamber in the front-to-back direction not less than 0.1, the air outlet chamber 31 can effectively buffer the airflow, so as to reduce the discomfort caused by the impact of the airflow on the human body due to excessive flow rate; by making the ratio of the depth dimension of the air outlet chamber 31 in the front-to-back direction to the depth dimension of the installation chamber in the front-to-back direction not greater than 0.5, the depth dimension of the air outlet chamber 31 in the front-to-back direction can be set more reasonably, thereby making the heat pump outdoor unit 100 smaller in the front-to-back direction while reducing the discomfort caused by the impact of the outlet airflow on the human body, so as to reduce the space occupied by the heat pump outdoor unit 100 as a whole.

[0110] By setting the ratio of the depth of the air outlet cavity 31 in the front-to-back direction to the depth of the installation cavity in the front-to-back direction in the range of 0.1 to 0.5, the buffering effect of the air outlet cavity 31 on the airflow and the overall size of the heat pump outdoor unit 100 in the front-to-back direction can be better balanced.

[0111] Reference Figure 3-Figure 5 , according to some embodiments of the present invention, the air outlet frame 3 is detachably connected to the casing main body 1, which can facilitate the maintenance or replacement of the air outlet frame 3 or the casing main body 1. For example, one of the air outlet frame 3 and the casing main body 1 may be provided with a hook, and the other of the air outlet frame 3 and the casing main body 1 may be provided with a slot. Through the snap connection between the hook and the slot, the air outlet frame 3 and the casing main body 1 can be detachably connected, so that the connection method between the air outlet frame 3 and the entire casing is simple and has strong stability; the air outlet frame 3 and the casing main body 1 may also be connected by fasteners, which can also achieve a detachable connection between the air outlet frame 3 and the casing main body 1.

[0112] Refer to the following Figures 1-11 A heat pump outdoor unit 100 according to some embodiments of the present invention is described.

[0113] Reference Figure 1-Figure 5 In this embodiment, the heat pump outdoor unit 100 includes an outdoor housing 10, a heat exchange and exhaust assembly, a heating assembly, a temperature sensor, and an air volume sensor. The outdoor housing 10 includes a housing body 1, a front baffle 2, and an air outlet frame 3. The air outlet frame 3 is disposed on the front side of the housing body 1. The front baffle 2 is disposed between the housing body 1 and the air outlet frame 3. The housing body 1 and the front baffle 2 together define an installation cavity. The air outlet frame 3 and the front baffle 2 together define an air outlet cavity 31. The front baffle 2 is provided with an air outlet 21, which connects the air outlet cavity 31 with the installation cavity. The housing body 1 is provided with an air inlet 11 communicating with the installation cavity. The air outlet frame 3 is provided with an air outlet communicating with the air outlet cavity 31. The heat exchange and exhaust assembly is disposed within the installation cavity. The heating assembly is disposed on the air outlet frame 3 and includes a heating element for heating the frame top 331.

[0114] The air outlet is staggered with the air flow outlet 21. The ratio of the depth dimension of the air outlet cavity 31 in the front-to-back direction to the depth dimension of the installation cavity in the front-to-back direction is in the range of 0.1 to 0.5.

[0115] The outdoor casing 10 includes a middle partition, which is arranged in the casing body 1 to divide the installation cavity into a first installation cavity and a second installation cavity arranged along the left and right directions. The heat exchange and exhaust assembly includes an outdoor heat exchanger, an outdoor fan and a compressor. The outdoor heat exchanger and the outdoor fan are arranged in the first installation cavity, and the compressor is arranged in the second installation cavity. The air inlet 11 and the air outlet cavity 31 are both connected to the first installation cavity.

[0116] The projection of the first installation cavity on the reference plane is the first projection, the projection of the second installation cavity on the reference plane is the second projection, and the projection of the air outlet cavity 31 on the reference plane is the third projection. At least part of the first projection coincides with the third projection, and at least part of the second projection coincides with the third projection. The reference plane is a plane perpendicular to the front-to-back direction.

[0117] The air outlet frame 3 is detachably connected to the casing body 1. The air outlet frame 3 includes a frame portion 33 and a front panel 34. The frame portion 33 is annular. The front panel 34 is covered on the front side of the frame portion 33. The frame portion 33 is connected between the front panel 34 and the casing body 1, and the air outlet is formed in the frame portion 33.

[0118] The frame portion 33 includes a frame top 331, a frame bottom 332, and a frame side 333. The frame top 331 is located at the top of the frame portion 33, the frame bottom 332 is located at the bottom of the frame portion 33, and the frame side 333 is connected to the left and right sides of the frame top 331 and the frame bottom 332. The air outlet includes a first air outlet 311, a second air outlet 312, and a third air outlet 313. The first air outlet 311 is set at the frame top 331. The first air outlet 311 includes a plurality of first sub-air outlets 3111 arranged at intervals. The cross-sectional area of ​​a single first sub-air outlet 3111 is less than 50 mm. 2 The second air outlet 312 is set at the bottom 332 of the frame, the second air outlet 312 includes a plurality of second sub-air outlets 3121 arranged at intervals, at least part of the second air outlet 312 constitutes a drain outlet, the third air outlet 313 is set at the side 333 of the frame, the third air outlet 313 includes a plurality of third sub-air outlets 3131 arranged at intervals, and the cross-sectional area of ​​a single first sub-air outlet 3111 is smaller than the cross-sectional area of ​​a single third sub-air outlet 3131.

[0119] The first air outlet 311 includes a plurality of first sub-air outlets 3111 arranged at intervals. The cross section of the first sub-air outlet 3111 is polygonal or circular, and the number of sides of the polygon is greater than or equal to 4.

[0120] A guide surface is formed on the upper surface of the frame top 331. The first air outlet 311 is formed on the guide surface, which extends obliquely downward. The guide surface extends obliquely downward in the front-to-back direction, with the angle between the guide surface and the horizontal plane ranging from 15° to 25°. There are two guide surfaces: a first guide surface 3312 and a second guide surface 3313. The first guide surface 3312 is connected to the front side of the second guide surface 3313. The first guide surface 3312 extends obliquely downward from the back to the front, while the second guide surface 3313 extends obliquely downward from the front to the back.

[0121] The heating assembly is located within the air outlet cavity 31, with the heating element positioned adjacent to and spaced apart from the frame top 331. The hot key is thermally connected to the frame top 331, and a thermally conductive connection layer is provided between the heating element and the frame top 331. The frame top 331 is a thermally conductive element, and the heating element is an electric heater. The heating element is located at the lowest point of the frame top 331, and the thermally conductive connection layer is an insulating layer. At least a portion of the heating element extends in the left-right direction. Heating elements are also located at the lowest point of the first guide surface 3312 and the lowest point of the second guide surface 3313.

[0122] The temperature sensor is used to detect the temperature of the frame top 331 or the outdoor ambient temperature. The temperature sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit 100. The air volume sensor is used to detect the air volume discharged from the frame top 331. The air volume sensor is located on the guide surface and is located between the highest and lowest positions of the guide surface. The air volume sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit 100.

[0123] By setting an air outlet frame 3 on the front side of the casing main body 1, the casing main body 1 and the front partition 2 jointly define an installation cavity, and the air outlet frame 3 and the front partition 2 jointly define an air outlet cavity 31, so that the air outlet cavity 31 is located on the front side of the casing main body 1 and the air outlet cavity 31 is separated from the installation cavity by the front partition 2, and the heat exchange exhaust component is set in the installation cavity. When the heat pump outdoor unit 100 is working, the airflow discharged by the heat exchange exhaust component in the installation cavity is not discharged directly to the outside, but is discharged into the air outlet cavity 31 through the first air flow outlet 21. The buffering effect of the air outlet cavity 31 can reduce the flow rate and impact force of the outlet airflow. The outlet airflow buffered by the outlet cavity 31 is discharged to the outside through the air outlet, which can reduce the discomfort caused by the impact of the outlet airflow on the human body. In addition, by extending the first guide surface 3312 of the frame top 331 in a downwardly inclined direction from the back to the front, and extending the second guide surface 3313 in a downwardly inclined direction from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the frame top 331 to move toward the front or rear side of the frame top 331 under the action of its own gravity, thereby reducing the possibility of external debris accumulating on the frame top 331.

[0124] Reference Figure 1-Figure 4 The heat pump system according to the second embodiment of the present invention includes a heat pump indoor unit and a heat pump outdoor unit 100 according to the first embodiment of the present invention.

[0125] According to the heat pump system of an embodiment of the present invention, the above-mentioned heat pump outdoor unit 100 is provided, and an air outlet frame 3 is provided on the front side of the casing main body 1. The casing main body 1 and the front partition 2 jointly define the installation cavity, and the air outlet frame 3 and the front partition 2 jointly define the air outlet cavity 31, so that the air outlet cavity 31 is located on the front side of the casing main body 1 and the air outlet cavity 31 is separated from the installation cavity by the front partition 2, and the heat exchange exhaust component is provided in the installation cavity. When the heat pump outdoor unit 100 is working, the airflow discharged by the heat exchange exhaust component in the installation cavity is not discharged directly to the outside, but is discharged into the air outlet cavity 31 through the first air flow outlet 21. The buffering effect of the air outlet cavity 31 can reduce the flow rate and impact force of the outlet airflow. The outlet airflow buffered by the outlet cavity 31 is discharged to the outside through the air outlet, which can reduce the discomfort caused by the impact of the outlet airflow on the human body. In addition, by extending the first guide surface 3312 of the frame top 331 in a downwardly inclined direction from the back to the front, and extending the second guide surface 3313 in a downwardly inclined direction from the front to the back, the two guide surfaces can more effectively and evenly guide external debris on the frame top 331 to move toward the front or rear side of the frame top 331 under the action of its own gravity, thereby reducing the possibility of external debris accumulating on the frame top 331.

[0126] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0127] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0128] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0129] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0130] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0131] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A heat pump outdoor unit, characterized in that: include: The outdoor casing comprises a casing main body, a front partition and an air outlet frame, the air outlet frame is arranged on the front side of the casing main body, the front partition is arranged between the casing main body and the air outlet frame, the casing main body and the front partition jointly define a mounting cavity, the air outlet frame and the front partition jointly define an air outlet cavity, the front partition is provided with an air outlet, the air outlet communicates with the air outlet cavity and the mounting cavity, the casing main body is provided with an air inlet communicated with the mounting cavity, the air outlet frame is provided with an air outlet communicated with the air outlet cavity, the air outlet and the air outlet are staggered. The air outlet frame includes a frame top located at the top, an upper surface of the frame top is formed with a guide surface, the two guide surfaces are respectively a first guide surface and a second guide surface, the first guide surface is connected to the front side of the second guide surface, the first guide surface extends downwardly in an inclined direction from rear to front, and the second guide surface extends downwardly in an inclined direction from front to rear; The air outlet frame includes a frame portion and a front panel, the frame portion is annular, the frame portion includes the frame top, the front panel cover is arranged on the front side of the frame portion, the frame portion is connected between the front panel and the housing body, the air outlet is formed in the frame portion, the air outlet includes a first air outlet, the first air outlet is arranged on the frame top, and the first air outlet is formed on the guide surface; a heating assembly, the heating assembly being provided on the air outlet surface frame and comprising a heating element for heating the top of the frame, the heating element being provided at the lowest position of the top of the frame, or the heating element being provided at the lowest position of the first guide surface and the lowest position of the second guide surface, the heating element being an electric heating element; The heat exchange and exhaust assembly is arranged in the installation cavity.

2. The heat pump outdoor unit according to claim 1, characterized in that: The included angle between the first guide surface and the horizontal plane is in the range of 15° to 25°; and / or the included angle between the second guide surface and the horizontal plane is in the range of 15° to 25°.

3. The heat pump outdoor unit according to claim 1, characterized in that: The heating element is disposed adjacent to and spaced apart from the frame top.

4. The heat pump outdoor unit according to claim 1, characterized in that: The heating element is thermally connected to the top of the frame, and a thermally conductive connection layer is provided between the heating element and the top of the frame.

5. The heat pump outdoor unit according to claim 4, characterized in that: The heating element is an electric heating element, and the heat-conducting connection layer is an insulating layer.

6. The heat pump outdoor unit according to claim 1, characterized in that: The heating assembly is disposed in the air outlet cavity; and / or at least a portion of the heating element extends in the left-right direction.

7. The heat pump outdoor unit according to claim 1, characterized in that: The top of the frame is a heat conducting member.

8. The heat pump outdoor unit according to claim 1, characterized in that: It also includes a temperature sensor, which is used to detect the temperature of the top of the frame or the outdoor ambient temperature. The temperature sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit.

9. The heat pump outdoor unit according to claim 1, characterized in that: The first air outlet includes a plurality of first sub-air outlets arranged at intervals, and the cross-sectional area of ​​a single first sub-air outlet is less than 50 mm 2 .

10. The heat pump outdoor unit according to claim 1, characterized in that: The first air outlet includes a plurality of first sub-air outlets arranged at intervals. The cross section of the first sub-air outlet is polygonal or circular, and the number of sides of the polygon is greater than or equal to 4.

11. The heat pump outdoor unit according to claim 1, characterized in that: It also includes a heating component and an air volume sensor. The heating component is arranged on the air outlet frame and includes a heating element for heating the top of the frame. The air volume sensor is arranged on the upper surface of the top of the frame and is used to detect the air volume at the top of the frame. The air volume sensor and the heating element are both electrically connected to the controller of the heat pump outdoor unit.

12. The heat pump outdoor unit according to claim 11, characterized in that: The air volume sensor is arranged on the guide surface and is located between the highest position and the lowest position of the guide surface.

13. The heat pump outdoor unit according to claim 1, characterized in that: The frame portion includes a frame bottom portion located at the bottom, and the air outlet includes a second air outlet. The second air outlet is arranged at the frame bottom portion, and at least a portion of the second air outlet constitutes a drain outlet.

14. The heat pump outdoor unit according to claim 1, characterized in that: The frame portion includes the frame top, the frame bottom and the frame side, the frame top is located at the top of the frame portion, the frame bottom is located at the bottom of the frame portion, the frame side is connected to the left and right sides of the frame top and the frame bottom, and the air outlet includes a third air outlet, and the third air outlet is provided on the frame side.

15. The heat pump outdoor unit according to claim 14, characterized in that: The first air outlet includes a plurality of first sub-air outlets arranged at intervals, and the third air outlet includes a plurality of third sub-air outlets arranged at intervals. The cross-sectional area of ​​a single first sub-air outlet is smaller than the cross-sectional area of ​​a single third sub-air outlet.

16. The heat pump outdoor unit according to any one of claims 1 to 15, characterized in that: The outdoor casing includes a middle partition, which is arranged in the casing body to divide the installation cavity into a first installation cavity and a second installation cavity arranged along the left and right directions. The heat exchange and exhaust assembly includes an outdoor heat exchanger, an outdoor fan and a compressor. The outdoor heat exchanger and the outdoor fan are arranged in the first installation cavity, the compressor is arranged in the second installation cavity, and the air inlet and the air outlet cavity are both connected to the first installation cavity.

17. The heat pump outdoor unit according to claim 16, characterized in that: The projection of the first installation cavity on the reference plane is the first projection, the projection of the second installation cavity on the reference plane is the second projection, and the projection of the air outlet cavity on the reference plane is the third projection. At least part of the first projection coincides with the third projection, and at least part of the second projection coincides with the third projection. The reference plane is a plane perpendicular to the front-to-back direction.

18. The heat pump outdoor unit according to any one of claims 1 to 15, characterized in that: The depth dimension of the air outlet cavity in the front-to-back direction is smaller than the depth dimension of the installation cavity in the front-to-back direction.

19. The heat pump outdoor unit according to claim 18, characterized in that: The ratio of the depth dimension of the air outlet cavity in the front-to-back direction to the depth dimension of the installation cavity in the front-to-back direction is in the range of 0.1 to 0.

5.

20. The heat pump outdoor unit according to any one of claims 1 to 15, characterized in that: The air outlet frame is detachably connected to the casing body.

21. A heat pump system, characterized in that: include: Heat pump indoor unit; The heat pump outdoor unit according to any one of claims 1 to 20.

Images