Heat pump outdoor unit and heat pump system

Abstract

The invention discloses a heat pump outdoor unit and a heat pump system, and relates to the technical field of heating and ventilation equipment.The heat pump outdoor unit comprises an outdoor unit shell and a heat exchange exhaust assembly, and the outdoor unit shell comprises a shell body, a front partition plate and an air outlet face frame; the front partition plate is arranged between the machine shell body and the air outlet face frame, the front partition plate, the machine shell body and the air outlet face frame jointly define a mounting cavity and an air outlet cavity, the heat exchange air exhaust assembly is arranged in the mounting cavity, an airflow outlet is formed in the front partition plate, an air inlet is formed in the machine shell body, and an air outlet staggered with the airflow outlet is formed in the air outlet face frame. The air outlet face frame comprises a frame top located at the top, two flow guide faces arranged front and back are formed on the upper surface of the frame top, the flow guide face located on the front side obliquely extends downwards in the direction from back to front, and the flow guide face located on the rear side obliquely extends downwards in the direction from front to back. According to the heat pump outdoor unit, discomfort caused by impact of outlet air flow on a human body can be reduced, and the possibility that external sundries are accumulated on the top of the frame is 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] The heat pump outdoor unit according to an embodiment of the present invention is provided with an air outlet surface frame on the front side of the housing main body. The housing main body and the front partition jointly define an installation cavity, and the air outlet surface frame and the front partition jointly define an air outlet cavity. The air outlet cavity is located on the front side of the housing main body and is separated from the installation cavity by the front partition. The heat exchange and exhaust assembly is arranged in the installation cavity. When the heat pump outdoor unit is operating, the air flow discharged by the heat exchange and exhaust assembly in the installation cavity is not directly discharged to the outside, but is discharged to the air outlet cavity through the air flow outlet first. Through the buffering effect of the air outlet cavity, the flow rate and impact force of the air outlet flow can be reduced. The air outlet flow after being buffered by the air outlet cavity is discharged to the outside through the air outlet. In this way, the discomfort caused by the impact of the air outlet flow on the human body can be reduced. In addition, the first guide surface at the top of the frame extends obliquely downward in the direction from the rear to the front, and the second guide surface extends obliquely downward in the direction from the front to the rear. The two guide surfaces can more effectively and evenly guide the external sundries at the top of the frame to move toward the front side or the rear side of the top of the frame under the action of their own gravity, reducing the possibility of the external sundries accumulating on the top of the frame.

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

[0008] According to some embodiments of the present invention, it includes a heating assembly, and the heating assembly is arranged on the air outlet surface 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 adjacent to the top of the frame and is arranged at a distance 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 thermal 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 thermal connection layer is an insulating layer.

[0012] According to some embodiments of the present invention, the heating assembly is arranged in the air outlet cavity; and / or, at least a part 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 member; 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 positions of both the first guide surface and 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, and both the temperature sensor and the heating element are electrically connected to the controller of the heat pump outdoor unit.

[0016] According to some embodiments of the present invention, the air outlet surface frame includes a frame portion and a front panel. The frame portion is annular and includes a top of the frame. The front panel covers the front side of the frame portion, and the frame portion is connected between the front panel and the main body of the casing. 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 provided at the top of the frame, and the first air outlet is formed on the guiding 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 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.

[0020] According to some embodiments of the present invention, the heat pump outdoor unit further includes a heating assembly and an air volume sensor. The heating assembly is provided on the air outlet surface frame and includes a heating element for heating the top of the frame. The air volume sensor is used to detect the air volume at the top of the frame, and both the air volume sensor and the heating element are 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 guiding surface.

[0022] According to some embodiments of the present invention, the frame portion includes a bottom of the frame at the bottom. The air outlet includes a second air outlet provided at the bottom of the frame, and at least a part of the second air outlet constitutes a drain port.

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

[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 housing includes a middle partition plate, the middle partition plate is arranged inside the housing main body to divide the installation cavity into a first installation cavity and a second installation cavity arranged in the left-right direction, 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 communicated with 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-rear direction.

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

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

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

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

[0031] The heat pump system according to an embodiment of the present invention is provided with the above-mentioned heat pump outdoor unit. By providing an air outlet surface frame on the front side of the housing main body, the housing main body and the front partition jointly define an installation cavity, and the air outlet surface frame and the front partition jointly define an air outlet cavity. The air outlet cavity is located on the front side of the housing main body, and the air outlet cavity is separated from the installation cavity by the front partition. The heat exchange and exhaust air assembly is arranged in the installation cavity. When the heat pump outdoor unit is operating, the air flow discharged by the heat exchange and exhaust air assembly in the installation cavity is not directly discharged to the outside, but is first discharged to the air outlet cavity through the air flow outlet. Through the buffering effect of the air outlet cavity, the flow rate and impact force of the air outlet flow can be reduced. The air outlet flow after being buffered by the air outlet cavity is discharged to the outside through the air outlet, so that the discomfort caused by the impact of the air outlet flow on the human body can be reduced. In addition, through the first guiding surface at the top of the frame extending obliquely downward in the direction from the rear to the front, and the second guiding surface extending obliquely downward in the direction from the front to the rear, the two guiding surfaces can more effectively and evenly guide the external sundries at the top of the frame to move toward the front side or the rear side of the top of the frame under the action of their own gravity, reducing the possibility of the external sundries accumulating on the top of the frame.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the 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 be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where: Figure 1 is a three-dimensional schematic view of a heat pump outdoor unit according to some embodiments of the present invention; Figure 2 is Figure 1 the front view of the heat pump outdoor unit in Figure 3 is Figure 1 the top view of the heat pump outdoor unit in Figure 4 is Figure 1 the side view of the heat pump outdoor unit in Figure 5 is Figure 1 the three-dimensional schematic view of the air outlet surface frame of the heat pump outdoor unit in Figure 6 is Figure 5 the enlarged view of part A in Figure 7 is Figure 5 the three-dimensional schematic view of the air outlet surface frame from another angle in Figure 8 is Figure 5 the side view of the air outlet surface frame in Figure 9 is Figure 8Enlarged view at B in the [figure]; Figure 10 is Figure 5 Top view of the air outlet surface frame in [the figure]; Figure 11 is Figure 10 Enlarged view at C in [the figure].

[0034] Reference numerals: 100, heat pump outdoor unit; 10, outdoor unit housing; 1, housing main body; 11, air inlet; 2, front partition; 21, air flow outlet; 3, air outlet surface 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 part; 331, frame top; 3312, first guiding surface; 3313, second guiding surface; 332, frame bottom; 333, frame side; 34, front panel. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0036] Below, refer to Figures 1 - 11 to describe the heat pump outdoor unit 100 according to an embodiment of the present invention.

[0037] Refer to Figures 1 - 4 , the heat pump outdoor unit 100 according to the first aspect embodiment of the present invention includes an outdoor unit housing 10 and a heat exchange and exhaust air assembly. The outdoor unit housing 10 includes a housing main body 1, a front partition 2, and an air outlet surface frame 3. The air outlet surface frame 3 is disposed on the front side of the housing main body 1. The front partition 2 is provided between the housing main body 1 and the air outlet surface frame 3. The housing main body 1 and the front partition 2 jointly define an installation cavity. The air outlet surface 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. The air flow outlet 21 communicates the air outlet cavity 31 with the installation cavity. The housing main body 1 is provided with an air inlet 11 communicating with the installation cavity. The air outlet surface frame 3 is provided with an air outlet communicating with the air outlet cavity 31. The heat exchange and exhaust air assembly is disposed in the installation cavity.

[0038] When the heat pump outdoor unit 100 is operating, external air enters the installation cavity through the air inlet 11 and flows towards the heat exchange and exhaust air assembly. The air after heat exchange by the heat exchange and exhaust air assembly flows through the air flow outlet 21 into the air outlet cavity 31, and then flows out of the heat pump outdoor unit 100 through the air outlet.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The air outlet front frame 3 includes a frame top 331 at the top. A flow guiding surface is formed on the upper surface of the frame top 331. There are two flow guiding surfaces, namely a first flow guiding surface 3312 and a second flow guiding surface 3313. The first flow guiding surface 3312 is connected to the front side of the second flow guiding surface 3313. The first flow guiding surface 3312 extends obliquely downward in the direction from back to front, and the second flow guiding surface 3313 extends obliquely downward in the direction from front to back. By the first flow guiding surface 3312 extending obliquely downward in the direction from back to front and the second flow guiding surface 3313 extending obliquely downward in the direction from front to back, the two flow guiding surfaces can more effectively and evenly guide the external sundries on the frame top 331 to move toward the front side or the back side of the frame top 331 under the action of their own gravity, reducing the possibility of external sundries accumulating on the frame top 331. For example, the external sundries falling on the front position of the frame top 331 can quickly slide down along the first flow guiding surface 3312 toward the front side of the frame top 331, and the external sundries falling on the back position of the frame top 331 will quickly slide down along the second flow guiding surface 3313 toward the back side of the frame top 331, which can reduce the possibility of external sundries accumulating on the frame top 331 and blocking the air outlet of the frame top 331.

[0043] For example, in rainy or snowy weather, by the first flow guiding surface 3312 extending obliquely downward in the direction from back to front and the second flow guiding surface 3313 extending obliquely downward in the direction from front to back, the rain and snow can be more quickly dispersed to the front side and the back side of the frame top 331. The rain and snow near the front side of the frame top 331 can quickly slide down along the first flow guiding surface 3312 to the front side of the frame top 331, and the rain and snow near the back side of the frame top 331 can quickly slide down along the second flow guiding surface 3313 to the back side of the frame top 331, and can be discharged from the front side and the back side of the frame top 331 at the same time. Compared with the single-side discharge from the front side or the back side of the frame top 331, it can reduce the possibility of rain and snow accumulating on the frame top 331 and blocking the air outlet of the frame top 331.

[0044] According to the heat pump outdoor unit 100 of an embodiment of the present invention, by providing an air outlet surface frame 3 on the front side of the housing main body 1, the housing main body 1 and the front partition 2 jointly define an installation cavity, and the air outlet surface 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 housing main body 1 and the air outlet cavity 31 is separated from the installation cavity by the front partition 2. The heat exchange and exhaust assembly is arranged in the installation cavity. When the heat pump outdoor unit 100 is operating, the air flow discharged by the heat exchange and exhaust assembly in the installation cavity is not directly discharged to the outside, but is first discharged into the air outlet cavity 31 through the air flow outlet 21. Through the buffering effect of the air outlet cavity 31, the flow rate and impact force of the air flow at the outlet can be reduced. The air flow at the outlet after being buffered by the air outlet cavity 31 is discharged to the outside through the air outlet, so that the discomfort caused by the impact of the air flow at the outlet on the human body can be reduced. In addition, by the first guiding surface 3312 of the frame top 331 extending obliquely downward in the direction from back to front, and the second guiding surface 3313 extending obliquely downward in the direction from front to back, the two guiding surfaces can more effectively and evenly guide the external debris on the frame top 331 to move forward or backward under its own gravity, reducing the possibility of external debris accumulating on the frame top 331.

[0045] Referring to Figures 5 - 9 , according to some embodiments of the present invention, the included angle α1 between the first guiding surface 3312 and the horizontal plane ranges from 15° to 25°. For example, the included angle α1 between the first guiding surface 3312 and the horizontal plane can be 15°, 17°, 20°, 22°, 25°, etc. By making the included angle α1 between the first guiding surface 3312 and the horizontal plane not less than 15°, the first guiding surface 3312 can effectively guide the external debris on the frame top 331, so as to reduce or avoid the possibility of external debris accumulating on the frame top 331 and blocking the air outlet of the frame top 331; by the included angle α1 between the first guiding surface 3312 and the horizontal plane not greater than 25°, the air flow can flow out smoothly from the air outlet of the frame top 331, reducing the flow resistance of the air flow flowing out from the air outlet of the frame top 331.

[0046] For example, if the included angle α1 between the first guiding surface 3312 and the horizontal plane is too large, it may cause the included angle between the air outlet of the frame top 331 and the horizontal plane to be too large. An excessive included angle between the air outlet of the frame top 331 and the horizontal plane will cause a sudden change in the flow cross-section of the air flow and increase the flow resistance of the air flow. By making the included angle α1 between the first guiding surface 3312 and the horizontal plane not greater than 25°, the air flow can flow out smoothly from the air outlet of the frame top 331. By the included angle α1 between the first guiding surface 3312 and the horizontal plane ranging from 15° to 25°, the guiding effect of the first guiding surface 3312 on the external debris on the frame top 331 and the smoothness of the air flow can be better balanced.

[0047] Referring toFigures 5 - 9 , According to some embodiments of the present invention, the included angle α2 between the second flow guiding surface 3313 and the horizontal plane ranges from 15° to 25°. For example, the included angle α2 between the second flow guiding surface 3313 and the horizontal plane can be 15°, 17°, 20°, 22°, 25°, etc. By making the included angle α2 between the second flow guiding surface 3313 and the horizontal plane not less than 15°, the second flow guiding surface 3313 can effectively guide the external debris on the top of the frame 331, so as to reduce or avoid the possibility that the external debris accumulates on the top of the frame 331 and blocks the air outlet of the top of the frame 331; by making the included angle α2 between the second flow guiding surface 3313 and the horizontal plane not greater than 25°, the air flow can flow out smoothly from the air outlet of the top of the frame 331, reducing the flow resistance of the air flow flowing out from the air outlet of the top of the frame 331.

[0048] For example, if the included angle α2 between the second flow guiding surface 3313 and the horizontal plane is too large, it may cause the included angle between the air outlet of the top of the frame 331 and the horizontal plane to be too large. An excessive included angle between the air outlet of the top of the frame 331 and the horizontal plane will cause a sudden change in the flow cross-section of the air flow and increase the flow resistance of the air flow. By making the included angle α2 between the second flow guiding surface 3313 and the horizontal plane not greater than 25°, the air flow can flow out smoothly from the air outlet of the top of the frame 331. By setting the included angle α2 between the second flow guiding surface 3313 and the horizontal plane to range from 15° to 25°, the guiding effect of the second flow guiding surface 3313 on the external debris on the top of the frame 331 and the smoothness of the air flow can be better balanced.

[0049] Refer to Figures 5 - 9 , According to some embodiments of the present invention, the flow guiding surface extends obliquely downward in the front-rear direction. By making the flow guiding surface formed into a structure that extends obliquely downward in the front-rear direction, the debris falling on the flow guiding surface can slide downward along the front-rear direction, which can reduce the possibility that the external debris accumulates on the top of the frame 331 and blocks the first air outlet 311 of the top of the frame 331.

[0050] Refer to Figures 5 - 9 , According to some embodiments of the present invention, it includes a heating component. The heating component is arranged on the air outlet surface frame 3 and the heating component includes a heating element for heating the top of the frame 331. For example, in snowy days or in a low ambient temperature environment, frosting or icing easily occurs on the top of the frame 331. By arranging the heating component on the air outlet surface frame 3 and the heating component includes a heating element for heating the top of the frame 331, and heating the top of the frame 331 through the heating element, the temperature of the top of the frame 331 is increased, so that the snow, frost or ice accumulated on the top of the frame 331 can be quickly melted into water and discharged, so as to reduce the blockage of the air outlet of the top of the frame 331 and affect the air outlet efficiency, and make the air flow flow out smoothly from the air outlet of the top of the frame 331.

[0051] Reference Figures 5 - 9 According to some embodiments of the present invention, the heating element is an electric heating element. By setting the heating element as an electric heating element, it is convenient to control the turning on and off 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 top of the frame 331, and the electric heating element itself can also achieve relatively precise power adjustment, thereby accurately controlling the calorific value.

[0052] For example, the heating element can be in the shape of a heating wire, a heating strip, a heating sheet, a heating mesh, etc.

[0053] Reference Figures 5 - 9 According to some embodiments of the present invention, the top of the frame 331 is a heat-conducting member, and the heat of the heating element is transferred to the top of the frame 331. Since the top of the frame 331 is a heat-conducting member, the heat can be quickly conducted on the top of the frame 331, making the temperature of the top of the frame 331 relatively uniform as a whole, avoiding excessive local heat on the top of the frame 331 from affecting the structural strength of the top of the frame 331, and also avoiding too little local heat on the top of the frame 331 from affecting the ice melting or defrosting effect. Thus, the overall ice melting or defrosting effect of the top of the frame 331 can be better, and the risk of the air outlet being partially or completely blocked can be reduced better.

[0054] Reference Figures 5 - 8 According to some embodiments of the present invention, the heating element is adjacent to the top of the frame 331 and is spaced apart from the top of the frame 331. Heat transfer between the top of the frame 331 and the heating element can be achieved through thermal radiation or thermal convection. For example, the airflow at the air outlet can carry the heat generated by the heating element to flow to the top of the frame 331 to heat the top of the frame 331. By setting the heating element to be spaced apart from the top of the frame 331, the influence of the heating element on the top of the frame 331 can be reduced, and the material selection of the top of the frame 331 can have less restrictions. For example, the top of the frame 331 can be made of a metal material or a plastic material. When the top of the frame 331 is made of a plastic material, spacing the heating element apart from the top of the frame 331 can reduce the influence on the structural strength of the top of the frame 331 due to the high temperature of the heating element; when the top of the frame 331 is made of a metal material, spacing the heating element apart from the top of the frame 331 can reduce or avoid the safety risk caused by electrical contact between the heating element and the top of the frame 331 when the heating element is an electric heating element.

[0055] Reference Figures 5 - 9 According to some embodiments of the present invention, the heating element is thermally connected to the top of the frame 331, so that the heat generated by the heating element can be transferred to the top of the frame 331 through heat conduction to heat the top of the frame 331, which can improve the heating efficiency of the heating element for the top of the frame 331 and reduce the loss of heat during the transfer process.

[0056] For example, a heat-conducting connection layer may be provided between the heating element and the top of the frame 331. The heat generated by the heating element can be thermally conducted to the top of the frame 331 through the heat-conducting connection layer. For example, the heat-conducting connection layer may be a heat-conducting adhesive layer.

[0057] In some embodiments, the heating element is an electric heating element, and the heat-conducting connection layer may 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 top of the frame 331 can be reduced or avoided.

[0058] Referring to Figures 5 - 9 , according to some embodiments of the present invention, the heating assembly is disposed in the air outlet cavity 31. By disposing the heating assembly in the air outlet cavity 31, the air outlet surface frame 3 can play a certain protective role for the heating assembly, reducing the possibility of damage to the heating assembly caused by external impacts, etc., which is beneficial to extending the service life of the heating assembly. And, since the heating assembly is located in the air outlet cavity 31, that is, the heating assembly is disposed inside the outdoor housing 10. Compared with disposing the heating assembly outside the outdoor housing 10, the safety can be improved, and the safety risk caused by accidentally touching the heating assembly can be reduced.

[0059] In addition, when the heating assembly is disposed in the air outlet cavity 31, the heat generated by the heating element can pass through the air flow at the air outlet and pass through the top of the frame 331, thereby realizing the heating of the top of the frame 331 and the space near the top of the frame 331, increasing the heating space range, further reducing the risk that the top of the frame 331 freezes and blocks the air outlet partially or completely, and further ensuring the air outlet area and air outlet smoothness of the air outlet.

[0060] Referring to Figures 5 - 9 , according to some embodiments of the present invention, at least a part of the heating assembly extends in the left-right direction. Among them, at least a part of the heating assembly extending in the left-right direction may include the following situations: for example, it may be that a part of the heating assembly extends in the left-right direction; for another example, it may also be that the entire heating assembly extends in the left-right direction.

[0061] By at least a part of the heating element extending in the left-right direction, a relatively large area in the left-right direction of the top of the frame 331 can be covered, so as to heat a relatively large area of the top of the frame 331, effectively preventing rainwater from freezing or snow accumulating on the top of the frame 331, so that the air flow can smoothly flow out from the first air outlet 311 of the top of the frame 331.

[0062] Referring to Figures 5 - 9, according 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 condensate) is likely to accumulate under the action of its own gravity, and it is also an area where the first air outlet 311 of the frame top 331 is more likely to be blocked due to freezing of accumulated water. By providing a heating element at the lowest position of the frame top 331, this part of the area can be directly heated quickly, so that the accumulated snow, ice, or frost can be quickly melted and discharged, ensuring smooth air outlet at the lowest position of the frame top 331 and avoiding the blockage of the air outlet at the lowest position of the frame top 331.

[0063] Refer to Figures 5 - 9 , according to some embodiments of the present invention, heating elements are provided at the lowest positions of both the first guiding surface 3312 and the second guiding surface 3313. The first guiding surface 3312 extends obliquely downward in the direction from the rear to the front, and the second guiding surface 3313 extends obliquely downward in the direction from the front to the rear, which can make rainwater, snow water, etc. falling on the frame top 331 flow quickly forward and backward along the first guiding surface 3312 and the second guiding surface 3313 respectively to the front and rear sides of the frame top 331. The lowest positions of the two guiding surfaces are the convergence points of the water flow and are also the positions where there is more ice, frost, or snow accumulation. By providing heating elements at the lowest positions of both the first guiding surface 3312 and the second guiding surface 3313, the ice, frost, or snow accumulated at the lowest positions of the guiding surfaces can be heated in time, ensuring the smoothness of the first air outlet 311 of the frame top 331 and reducing the risk of air outlet blockage of the frame top 331.

[0064] Refer to Figures 5 - 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. Both the temperature sensor and the heating element are electrically connected to the controller of the heat pump outdoor unit 100. For example, the temperature sensor can 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 timely and accurately; for another example, the temperature sensor can also be installed on the upper surface of the frame top 331 to more timely and accurately detect the outdoor ambient temperature around the frame top 331.

[0065] 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, it can control the heating element to turn on or off, or adjust the power of the heating element after it is turned on. While realizing the heating of the frame top 331, it can reduce energy waste and achieve the efficient operation of the heating element.

[0066] For example, when the temperature sensor detects that the temperature of the top of the frame 331 or the outdoor ambient temperature is low, it indicates that there is a high risk of icing or frosting on the top of the frame 331, 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 defrosting or deicing or snow melting of the top of the frame 331. After the defrosting or deicing 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 for defrosting or deicing or snow melting of the top of the frame 331, the heating power of the heating element can be adjusted according to the temperature of the top of the frame 331 or the outdoor ambient temperature. For example, the lower the temperature of the top of the frame 331 or the outdoor ambient temperature, the greater the heating power can be adjusted.

[0067] Refer to Figures 3 - 5 , according to some embodiments of the present invention, the air outlet surface frame 3 includes a frame portion 33 and a front panel 34. The frame portion 33 is annular, the front panel 34 is disposed on the front side of the frame portion 33, the frame portion 33 is connected between the front panel 34 and the housing body 1, and the air outlet is formed in the frame portion 33.

[0068] The frame portion 33 can support the front panel 34. By disposing the front panel 34 on the front side of the frame portion 33, it can block the internal structure of the air outlet surface frame 3, which is beneficial to improving the overall aesthetics of the heat pump outdoor unit 100. By forming the air outlet in the frame portion 33, the air outlet airflow can be discharged through the periphery of the heat pump outdoor unit 100. For example, the air outlet airflow can be discharged from the top or side or bottom of the heat pump outdoor unit 100, avoiding the discomfort caused by the air outlet airflow blowing directly onto the human body from the front side.

[0069] For example, when the heat pump outdoor unit 100 in the related art is installed on the first floor and faces the road surface, the heat-exchanged airflow blows out from the front side of the heat pump outdoor unit 100, which may blow onto passing pedestrians, making the passers-by feel uncomfortable. Especially in the hot summer, the hot wind after heat exchange blowing onto pedestrians will aggravate the discomfort. By forming the air outlet in the frame portion 33, the airflow can be discharged through the periphery 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.

[0070] Refer to Figures 5 - 9, according to some embodiments of the present invention, the frame portion 33 includes a frame top 331 at the top, and the air outlet includes a first air outlet 311, and the first air outlet 311 is provided on the frame top 331. By arranging the first air outlet 311 on the frame top 331, the air flow can be discharged from the frame top 331 to the outside of the heat pump outdoor unit 100 more smoothly. For example, in hot summer, the temperature of the air flow after heat exchange of the heat pump outdoor unit 100 is relatively high. According to the physical property that hot air rises, the relatively high-temperature air flow will flow upward. By arranging at least part of the air outlet on the frame top 331, it is convenient for this part of the relatively high-temperature air flow 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 air flow to the human body can be reduced.

[0071] Refer to 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 arranged at intervals, 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 can be 10 mm 2 , 20 mm 2 , 30 mm 2 , 40 mm 2 etc.

[0072] 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 block 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, etc. By making the cross-sectional area of the first sub-air outlet 3111 smaller to effectively block larger foreign objects from entering, the maintenance cost caused by foreign objects entering the interior of the heat pump outdoor unit 100 can be reduced.

[0073] In the description of the present invention, "a plurality of" means two or more.

[0074] Refer to 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 arranged at intervals, and the cross-section of the first sub-air outlet 3111 is a polygon or a circle, and the number of sides of the polygon is greater than or equal to 4.

[0075] For example, the cross-section of the first sub-air outlet 3111 is circular. When the perimeter 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 flow cross-section of the total first sub-air outlets 3111 on the frame top 331 can be relatively large, which is conducive to the smooth outflow of the air flow from the frame top 331.

[0076] 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, pentagon, hexagon, heptagon or octagon. By having the cross-section of the first sub-air outlet 3111 be a polygon and the number of sides of the polygon be 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 fixed, the number of the first sub-air outlets 3111 can be relatively large. In this way, the air outlet area of the total first sub-air outlets 3111 on the frame top 331 can be relatively large, which is conducive to increasing the air outlet area of the frame top 331.

[0077] In some embodiments, the cross-section of the first sub-air outlet 3111 is a regular hexagon. Regular hexagons can be arranged closely. When the area of the frame top 331 is fixed, the number of the first sub-air outlets 3111 can be relatively large, so that the air outlet area of the frame top 331 is relatively large, and the distance between adjacent first sub-air outlets 3111 is relatively uniform. In this way, the overall structural strength of the frame top 331 can be relatively strong, and the air outlet area of the frame top 331 and the structural strength of the frame top 331 can be better balanced.

[0078] Referring to Figures 5 - 9 , according to some embodiments of the present invention, the heat pump outdoor unit 100 further includes a heating component and an air volume sensor. The heating component is disposed on the air outlet surface frame 3 and includes a heating element for heating the frame top 331. The air volume sensor is used to detect the air volume of the frame top 331. Both the air volume sensor and the heating element are 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 of the first air outlet 311 of the frame top 331. By providing an air volume sensor for detecting the air volume of the frame top 331, the air volume sensor transmits the detected air volume information of the 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 of the frame top 331 measured by the air volume sensor. For example, it can control the heating element to turn on or off, or can adjust the power of the heating element after the heating element is turned on, so as to effectively reduce the possibility that the frame top 331 is blocked by snow, ice or frost, blocking the first air outlet 311 of the frame top 331, and enabling the air flow to flow out smoothly from the first air outlet 311 of the frame top 331.

[0079] For example, when the air volume flowing out of the first air outlet 311 from the air volume sensor to the top 331 of the frame is low, it indicates that the first air outlet 311 at the top 331 of the frame may be at least partially blocked due to reasons such as frosting, icing, or snow accumulation. At this time, the controller of the heat pump outdoor unit 100 can control the heating element to turn on to achieve defrosting, defreezing, or de - snowing of the top 331 of the frame. After the defrosting, defreezing, or de - snowing is completed, for example, when the air volume sensor detects that the air volume flowing out of the first air outlet 311 at the top 331 of the frame has returned to the 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 for defrosting, defreezing, or de - snowing of the top 331 of the frame, the heating power of the heating element can be adjusted according to the air volume flowing out of the first air outlet 311 at the top 331 of the frame detected by the air volume sensor. For example, the lower the air volume flowing out of the first air outlet 311 at the top 331 of the frame detected by the air volume sensor, the greater the heating power can be adjusted.

[0080] According to some embodiments of the present invention, the air volume sensor is disposed on the guiding surface and the air volume sensor is located between the highest position and the lowest position of the guiding surface. This can avoid detection deviation caused by excessive air flow diffusion at the highest position of the top 331 of the frame, and also prevent the local air flow velocity at the lowest position of the top 331 of the frame from being affected by the constraint of the guiding surface. By disposing the air volume sensor between the highest position and the lowest position of the guiding surface, the accuracy of the measured air volume data can be improved.

[0081] Refer to Figures 5 - 9 Referring to Figures 5 - 9 , according to some embodiments of the present invention, the frame portion 33 includes a frame bottom 332 located at the bottom, including a second air outlet 312. The second air outlet 312 is disposed on the frame bottom 332, and at least a part of the second air outlet 312 constitutes a drain outlet. Among them, at least a part of the second air outlet 312 constituting a drain outlet may include the following situations: for example, a part of the second air outlet 312 may constitute a drain outlet; for another example, the entire second air outlet 312 may also constitute a drain outlet.

[0082] By providing the second air outlet 312 on the frame bottom 332, the air outlet area can be increased, and it can also be used as a drain outlet. In this way, the water flowing down 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 on the frame bottom 332, avoiding the accumulation of water falling into the air outlet cavity 31 in the air outlet cavity 31.

[0083] Refer to Figures 5 - 9, according to some embodiments of the present invention, the frame part 33 includes a frame top part 331, a frame bottom part 332 and frame side parts 333. The frame top part 331 is located at the top of the frame part 33, the frame bottom part 332 is located at the bottom of the frame part 33, and the frame side parts 333 are connected to the left and right sides of the frame top part 331 and the frame bottom part 332. The air outlet includes a third air outlet 313, and the third air outlet 313 is provided on the frame side part 333. The first air outlet 311 on the frame top part 331 is conducive to the upward discharge of the relatively hot air flow. The third air outlet 313 on the frame side part 333 increases the air outlet area from the side of the heat pump outdoor unit 100, which can prevent the air flow from accumulating on the side, and further improves the overall air outlet efficiency. By forming air outlets on both the frame top part 331 and the frame side part 333, the air outlet area can be increased, the overall air outlet efficiency of the heat pump outdoor unit 100 can be improved, and it can also prevent the air flow from directly impacting the human body at too high a flow rate from the front side of the frame part 33, thereby reducing the discomfort of the human body.

[0084] Refer to Figures 5 - 9 , according to some embodiments of the present invention, the first air outlet 311 includes a plurality of first sub-air outlets 3111 arranged at intervals, 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. The relatively small cross-sectional areas of the plurality of first sub-air outlets 3111 on the frame top part 331 can effectively prevent external foreign objects from directly entering the air outlet cavity 31. The relatively large cross-sectional areas of the third sub-air outlets 3131 on the frame side parts 333 can enable the air flow to be discharged more smoothly from the side to the outside of the heat pump outdoor unit 100, which is conducive to improving the air outlet efficiency of the heat pump outdoor unit 100.

[0085] Refer to Figures 5 - 9 , according to some embodiments of the present invention, the air outlet is arranged around the frame part 33, so that the air flow can be discharged from multiple directions of the frame part 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 outlet air flow on the human body.

[0086] Refer to Figures 1 - 4 , according to some embodiments of the present invention, the outdoor machine shell 10 includes a middle partition board, and the middle partition board is arranged in the machine shell main body 1 to divide the installation cavity into a first installation cavity and a second installation cavity arranged in the left-right direction. 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 communicated with the first installation cavity.

[0087] The installation cavity is divided into a first installation cavity and a second installation cavity by a middle partition board, which can separate the outdoor heat exchanger and the outdoor fan in the first installation cavity from the compressor arranged in the second installation cavity, so that the outdoor heat exchanger, the outdoor fan and the compressor are arranged in an orderly manner, and the 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.

[0088] Since both the air inlet 11 and the air outlet cavity 31 communicate with 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. After heat exchange, the air flow can be driven by the outdoor fan and flow into the air outlet cavity 31 through the air flow outlet 21. After buffering, it is discharged to the outside of the heat pump outdoor unit 100, reducing the discomfort caused by the impact of the air flow on the human body.

[0089] In addition, by dividing the installation cavity into a first installation cavity and a second installation cavity by a middle partition board, this partition design makes the maintenance and repair of each component more convenient. Maintenance personnel can selectively open the corresponding cavity for inspection and repair without having to disassemble the entire heat pump outdoor unit 100 on a large scale. For example, if the outdoor fan fails, only the relevant part of the first installation cavity needs to be opened for repair, without affecting the compressor located in the second installation cavity, greatly shortening the repair time and improving the repair efficiency.

[0090] Referring to Figures 1 - 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 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-rear direction. Among them, the situation where at least part of the first projection coincides with the third projection may include the following cases: for example, part of the first projection coincides with the third projection; for another example, the entire first projection may also coincide with the third projection. The situation where at least part of the second projection coincides with the third projection may include the following cases: for example, part of the second projection coincides with the third projection; for another example, the entire second projection may also coincide with the third projection.

[0091] By making at least part of the first projection coincide with the third projection, at least part of the air outlet cavity 31 can be made to face the first installation cavity in the front-rear direction, and by making at least part of the second projection coincide with the third projection, at least part of the air outlet cavity 31 can be made to face the second installation cavity in the front-rear direction, so that the air outlet cross-sectional area of the air outlet cavity 31 can be made larger. In this way, when the air flow in the first installation cavity flows into the air outlet cavity 31 with a larger empty air outlet cross-sectional area through the air flow outlet 21, the flow area of the air flow increases, which can effectively reduce the flow velocity and impact force of the air flow flowing into the air outlet cavity 31, so that the air flow flowing into the air outlet cavity 31 can be better buffered. In this way, after the air flow buffered by the air outlet cavity 31 is discharged from the air outlet, it can better reduce the discomfort caused by the impact on the human body.

[0092] Referring to Figures 1 - 4 , according to some embodiments of the present invention, the depth dimension of the air outlet cavity 31 in the front-rear direction is smaller than the depth dimension of the installation cavity in the front-rear direction. By making the depth dimension of the air outlet cavity 31 in the front-rear direction smaller than the depth dimension of the installation cavity in the front-rear direction, while buffering the air flow flowing out from the air flow outlet 21 in the air outlet cavity 31, the overall size of the heat pump outdoor unit 100 in the front-rear direction can be made smaller, so as to reduce the space occupied by the overall heat pump outdoor unit 100.

[0093] Referring to Figures 1 - 4 , according to some embodiments of the present invention, the ratio range of the depth dimension of the air outlet cavity 31 in the front-rear direction to the depth dimension of the installation cavity in the front-rear direction is 0.1 to 0.5. For example, the ratio of the depth dimension of the air outlet cavity 31 in the front-rear direction to the depth dimension of the installation cavity in the front-rear 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 cavity 31 in the front-rear direction to the depth dimension of the installation cavity in the front-rear direction not less than 0.1, the air outlet cavity 31 can effectively buffer the air flow, so as to reduce the discomfort caused by the impact of the air flow with too high a flow velocity on the human body; by making the ratio of the depth dimension of the air outlet cavity 31 in the front-rear direction to the depth dimension of the installation cavity in the front-rear direction not greater than 0.5, the depth dimension of the air outlet cavity 31 in the front-rear direction can be set more reasonably, and further, when the heat pump outdoor unit 100 reduces the discomfort caused by the impact of the outgoing air flow on the human body, the overall size of the heat pump outdoor unit 100 in the front-rear direction can be made smaller, so as to reduce the space occupied by the overall heat pump outdoor unit 100.

[0094] By the ratio range of the depth dimension of the air outlet cavity 31 in the front-rear direction to the depth dimension of the installation cavity in the front-rear direction being 0.1 to 0.5, the buffering effect of the air outlet cavity 31 on the air flow and the size of the heat pump outdoor unit 100 in the front-rear direction can be better balanced.

[0095] Reference Figures 3 - 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.

[0096] Refer to the following Figures 1 - 11 A heat pump outdoor unit 100 according to some embodiments of the present invention is described.

[0097] Reference Figures 1 - 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] The air outlet front frame 3 is detachably connected to the main body of the casing 1. The air outlet front frame 3 includes a frame part 33 and a front panel 34. The frame part 33 is annular, and the front panel 34 is disposed on the front side of the frame part 33. The frame part 33 is connected between the front panel 34 and the main body of the casing 1, and an air outlet is formed in the frame part 33.

[0102] The frame part 33 includes a frame top part 331, a frame bottom part 332, and frame side parts 333. The frame top part 331 is located at the top of the frame part 33, the frame bottom part 332 is located at the bottom of the frame part 33, and the frame side parts 333 are connected to the left and right sides of the frame top part 331 and the frame bottom part 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 disposed on the frame top part 331. The first air outlet 311 includes a plurality of first sub-air outlets 3111 arranged at intervals, and the cross-sectional area of a single first sub-air outlet 3111 is less than 50 mm 2 , the second air outlet 312 is disposed on the frame bottom part 332. The second air outlet 312 includes a plurality of second sub-air outlets 3121 arranged at intervals. At least a part of the second air outlet 312 constitutes a drain port. The third air outlet 313 is disposed on the frame side part 333. 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 less than the cross-sectional area of a single third sub-air outlet 3131.

[0103] 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 a polygon or a circle, and the number of sides of the polygon is greater than or equal to 4.

[0104] A guiding surface is formed on the upper surface of the frame top part 331, and the first air outlet 311 is formed on the guiding surface. The guiding surface extends obliquely downward. The guiding surface extends obliquely downward in the front-rear direction, and the included angle between the guiding surface and the horizontal plane ranges from 15° to 25°. There are two guiding surfaces, which are a first guiding surface 3312 and a second guiding surface 3313 respectively. The first guiding surface 3312 is connected to the front side of the second guiding surface 3313. The first guiding surface 3312 extends obliquely downward in the direction from the rear to the front, and the second guiding surface 3313 extends obliquely downward in the direction from the front to the rear.

[0105] The heating assembly is disposed in the air outlet cavity 31. The heating element is adjacent to the frame top part 331 and is spaced apart from the frame top part 331. The heat-seeing key is thermally connected to the frame top part 331. A thermal connection layer is provided between the heating element and the frame top part 331. The frame top part 331 is a heat-conducting member, and the heating element is an electric heating element. The heating element is provided at the lowest position of the frame top part 331. The thermal connection layer is an insulating layer. At least a part of the heating element extends in the left-right direction. Heating elements are provided at the lowest positions of the first guiding surface 3312 and the second guiding surface 3313.

[0106] The temperature sensor is used to detect the temperature of the top of the frame 331 or the outdoor ambient temperature, and both the temperature sensor and the heating element are 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 top of the frame 331. The air volume sensor is arranged on the guiding surface and is located between the highest position and the lowest position of the guiding surface. Both the air volume sensor and the heating element are electrically connected to the controller of the heat pump outdoor unit 100.

[0107] By providing the air outlet surface frame 3 on the front side of the housing main body 1, the housing main body 1 and the front partition 2 jointly define an installation cavity, and the air outlet surface 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 housing main body 1 and the air outlet cavity 31 is separated from the installation cavity by the front partition 2. The heat exchange and exhaust assembly is arranged in the installation cavity. When the heat pump outdoor unit 100 is operating, the air flow discharged from the heat exchange and exhaust assembly in the installation cavity is not directly discharged to the outside, but is first discharged to the air outlet cavity 31 through the air flow outlet 21. Through the buffering effect of the air outlet cavity 31, the flow rate and impact force of the air flow at the outlet can be reduced. The air flow at the outlet after being buffered by the air outlet cavity 31 is discharged to the outside through the air outlet, so that the discomfort caused by the impact of the air flow at the outlet on the human body can be reduced. In addition, by the first guiding surface 3312 of the top of the frame 331 extending obliquely downward in the direction from back to front, and the second guiding surface 3313 extending obliquely downward in the direction from front to back, the two guiding surfaces can more effectively and evenly guide the external sundries on the top of the frame 331 to move toward the front side or the rear side of the top of the frame 331 under the action of their own gravity, reducing the possibility of external sundries accumulating on the top of the frame 331.

[0108] Refer to Figures 1 - 4 , the heat pump system according to the embodiment of the second aspect of the present invention includes a heat pump indoor unit and the heat pump outdoor unit 100 according to the embodiment of the first aspect of the present invention described above.

[0109] The heat pump system according to an embodiment of the present invention is provided with the above-mentioned heat pump outdoor unit 100. By providing an air outlet surface frame 3 on the front side of the housing main body 1, the housing main body 1 and the front partition 2 jointly define an installation cavity, and the air outlet surface frame 3 and the front partition 2 jointly define an air outlet cavity 31. The air outlet cavity 31 is located on the front side of the housing main body 1 and is separated from the installation cavity by the front partition 2. The heat exchange exhaust air assembly is arranged in the installation cavity. When the heat pump outdoor unit 100 is operating, the air flow discharged by the heat exchange exhaust air assembly in the installation cavity is not directly discharged to the outside, but is first discharged into the air outlet cavity 31 through the air flow outlet 21. Through the buffering effect of the air outlet cavity 31, the flow rate and impact force of the air outlet air flow can be reduced. The air outlet air flow after being buffered by the air outlet cavity 31 is discharged to the outside through the air outlet, so that the discomfort caused by the impact of the air outlet air flow on the human body can be reduced. In addition, the first guiding surface 3312 of the frame top 331 extends obliquely downward in the direction from back to front, and the second guiding surface 3313 extends obliquely downward in the direction from front to back. The two guiding surfaces can more effectively and evenly guide the external sundries on the frame top 331 to move toward the front side or the rear side of the frame top 331 under the action of their own gravity, reducing the possibility of external sundries accumulating on the frame top 331.

[0110] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation of the present invention.

[0111] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0112] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0113] In the description of the present invention, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0114] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0115] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present 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 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, It comprises a heating assembly, which is arranged on the air outlet frame and comprises a heating element for heating the top of the frame.

4. The heat pump outdoor unit according to claim 3, wherein, The heating element is disposed adjacent to and spaced apart from the frame top.

5. The heat pump outdoor unit according to claim 3, 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.

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

7. The heat pump outdoor unit according to claim 3, 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.

8. The heat pump outdoor unit according to claim 3, wherein The top of the frame is a heat conducting element; and / or the heating element is an electric heating element.

9. The heat pump outdoor unit according to claim 3, characterized in that, 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.

10. The heat pump outdoor unit according to claim 3, 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.

11. The heat pump outdoor unit according to claim 1, characterized in that, The air outlet frame includes a frame portion and a front panel. The frame portion is annular and 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 casing body. The air outlet is formed in the frame portion.

12. The heat pump outdoor unit according to claim 11, wherein, The air outlet includes a first air outlet, the first air outlet is arranged on the top of the frame, and the first air outlet is formed on the guide surface.

13. The heat pump outdoor unit according to claim 12, 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 .

14. The heat pump outdoor unit according to claim 12, wherein 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.

15. The heat pump outdoor unit according to claim 12, characterized in that, It further includes a heating component and an air volume sensor. The heating component is disposed on the air outlet surface frame and includes a heating element for heating the top of the frame. The air volume sensor is disposed on the upper surface of the top of the frame and is used to detect the air volume flowing out of the top of the frame. Both the air volume sensor and the heating element are electrically connected to the controller of the heat pump outdoor unit.

16. The heat pump outdoor unit according to claim 15, characterized in that, The air volume sensor is disposed on the guiding surface and is located between the highest position and the lowest position of the guiding surface.

17. The heat pump outdoor unit according to claim 12, characterized in that, The frame portion includes a frame bottom at the bottom. The air outlet includes a second air outlet, and the second air outlet is disposed at the frame bottom. At least part of the second air outlet forms a drainage port.

18. The heat pump outdoor unit according to claim 12, characterized in that, The frame portion includes the frame top, the frame bottom, and the frame side portions. 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 portions are connected to the left and right sides of the frame top and the frame bottom. The air outlet includes a third air outlet, and the third air outlet is disposed on the frame side portions.

19. The heat pump outdoor unit according to claim 18, wherein, 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. 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.

20. The heat pump outdoor unit according to any one of claims 1-19, characterized in that, The outdoor machine housing includes a middle partition board. The middle partition board is disposed inside the housing main body to divide the installation cavity into a first installation cavity and a second installation cavity arranged in the left-right direction. The heat exchange and exhaust component includes an outdoor heat exchanger, an outdoor fan, and a compressor. The outdoor heat exchanger and the outdoor fan are disposed in the first installation cavity, and the compressor is disposed in the second installation cavity. The air inlet and the air outlet cavity are both communicated with the first installation cavity.

21. The heat pump outdoor unit according to claim 20, characterized in that, 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. The reference plane is a plane perpendicular to the front-rear direction.

22. The heat pump outdoor unit according to any one of claims 1-19, characterized in that, The depth dimension of the air outlet cavity in the front-rear direction is smaller than the depth dimension of the installation cavity in the front-rear direction.

23. The heat pump outdoor unit according to claim 22, characterized in that, The ratio range of the depth dimension of the air outlet cavity in the front-rear direction to the depth dimension of the installation cavity in the front-rear direction is 0.1 - 0.

5.

24. The heat pump outdoor unit according to any one of claims 1-19, characterized in that, The air outlet surface frame is detachably connected to the housing main body.

25. A heat pump system, characterized in that, Comprising: A heat pump indoor unit; The heat pump outdoor unit according to any one of claims 1 - 24.

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