Air outlet assembly and heat pump water heater

Abstract

The application provides an air outlet assembly and a heat pump water heater. The air outlet assembly comprises: an outer cover provided with an air outlet area, the air outlet area comprising a main body area and an extension area, the extension area being located outside the main body area and connected with the main body area, the part where the extension area is connected with the main body area being a division boundary; a fan assembly arranged in the outer cover; and a guide ring arranged between the fan assembly and the air outlet area, the impeller of the fan assembly and the main body area being opposite to the inner hole of the guide ring, and the extension area being misaligned with the inner hole of the guide ring; wherein a flow guide part is arranged between the extension area and the guide ring, and the flow guide part is arranged to guide the airflow passing through the inner hole of the guide ring towards the division boundary to flow to the extension area. The air outlet assembly has smaller noise generated in the blowing process. Compared with the related art, the air outlet assembly has larger air outlet volume at the same impeller rotating speed, and the driving motor of the fan assembly has lower power at the same air outlet volume of the air outlet area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, in particular to an air outlet assembly and a heat pump water heater. BACKGROUND

[0002] The related art provides a heat pump water heater, a head assembly of which comprises an outer cover, a fan assembly, a wind guide ring 10 (as shown in Figure 1 The outer cover is provided with a rectangular air outlet area, the fan assembly is arranged in the outer cover, the wind guide ring 10 is arranged between the impeller of the fan assembly and the air outlet area, and the heat exchanger is arranged in the outer cover and on the side of the fan assembly opposite to the wind guide ring 10. The fan assembly is arranged to form an air flow flowing from the heat exchanger to the air outlet area through the impeller and the wind guide ring 10 during operation. How to better improve the operation performance of the heat pump water heater is a technical problem that technicians in the field have been trying to solve. SUMMARY

[0003] Analysis and research show that the inner holes of the impeller and the wind guide ring are circular structures, the inner hole of the wind guide ring is opposite to the impeller, the region of the air outlet area opposite to the inner hole of the wind guide ring is a main body region, the main body region is a circular structure, four extension regions are located outside the main body region at four corners of the air outlet area, and the air flow sent from the impeller to the air outlet area through the inner hole of the wind guide ring is basically sent out from the main body region, and the air outlet effect of the four extension regions is particularly poor.

[0004] The present application provides an air outlet assembly with better operation performance.

[0005] The present application also provides a heat pump water heater.

[0006] The air outlet assembly provided by the embodiment of the present application is used in a heat pump water heater, which comprises an outer cover provided with an air outlet area, the air outlet area comprising a main body region and an extension region, the extension region being located outside the main body region and connected with the main body region, a division boundary being formed between the main body region and the extension region, a fan assembly arranged in the outer cover, and a wind guide ring arranged between the fan assembly and the air outlet area, an impeller of the fan assembly and the main body region being opposite to an inner hole of the wind guide ring, and the extension region being misaligned with the inner hole of the wind guide ring, wherein a flow guide part is arranged between the extension region and the wind guide ring, and the flow guide part is arranged to guide an air flow sent through the inner hole of the wind guide ring towards the division boundary to flow to the extension region.

[0007] In some exemplary embodiments, the flow guide part comprises a flow guide groove arranged on a side of the wind guide ring facing the air outlet area.

[0008] In some exemplary embodiments, the flow guide groove extends obliquely from an air inlet side of the wind guide ring to an air outlet side of the wind guide ring and towards a radial outer side of the wind guide ring.

[0009] In some example embodiments, the flow guide groove extends obliquely from a radially inner side of the air guide ring to a radially outer side of the air guide ring towards a rotation direction of the impeller.

[0010] In some example embodiments, from an air inlet side of the air guide ring to an air outlet side of the air guide ring, an inner circumferential surface of the air guide ring comprises a connected constricted ring segment and an expanded ring segment, the flow guide groove comprises a connected first groove segment and a second groove segment, the first groove segment is located at a side of the air guide ring facing the air outlet area, and the second groove segment is located at the expanded ring segment.

[0011] In some example embodiments, the inner circumferential surface of the air guide ring further comprises a straight ring segment, the straight ring segment is located between and connected to the constricted ring segment and the expanded ring segment.

[0012] In some example embodiments, the flow guide groove further comprises a third groove segment, the third groove segment is located at the straight ring segment and connected to the second groove segment.

[0013] In some example embodiments, one end of the flow guide groove is through the inner hole of the air guide ring, and an inner surface of the flow guide groove is a concave curved surface.

[0014] In some example embodiments, a side wall of the outer cover is an annular wall, the air outlet area is located at the annular wall and is in a rectangular shape, four corners of the air outlet area are four of the extension areas, and the flow guide portions are arranged one-to-one corresponding to the extension areas.

[0015] The heat pump water heater provided by the embodiment of the present application comprises a water tank body and the air outlet assembly in any of the above embodiments, and the air outlet assembly is arranged on the water tank body.

[0016] In the technical scheme, when the fan assembly operates, air flows are blown from the impeller to the air outlet area through the inner hole of the air guide ring, in the process of blowing to the inner hole of the air guide ring, the air flows are blown from the inner hole of the air guide ring to the division boundary under the guidance of the flow guide portions, and finally, the air flows are blown out from the extension areas, that is, the air flows originally blown out from the body area are divided, part of the air flows blown out from the body area are blown out from the extension areas, and the other part of the air flows blown out from the body area are still blown out from the body area, so as to increase the blowing amount of the air flows blown out from the extension areas and reduce the blowing amount of the air flows blown out from the body area, so that the air flows blown out from the air outlet area are more dispersed, and the noise generated in the blowing process is smaller. Compared with the related art, the air outlet amount of the air outlet area is larger under the same impeller rotation speed, and the power of the driving motor of the fan assembly is lower under the same air outlet amount of the air outlet area. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of a guide air ring in the prior art;

[0018] Figure 2 Fig. 2 is a front structural schematic diagram of an air outlet assembly according to some embodiments of the present application;

[0019] Figure 3 Fig. 3 is a perspective structural schematic diagram of the air outlet assembly shown in Fig. 2; Figure 2 Fig. 4 is a partial perspective structural schematic diagram of the air outlet assembly shown in Fig. 3, with the grid and the outer cover not fully shown;

[0020] Figure 4 Fig. 5 is a front structural schematic diagram of an air outlet assembly according to some embodiments of the present application; Figure 2 Fig. 6 is a perspective structural schematic diagram of the air outlet assembly shown in Fig. 5, with the grid and the outer cover not shown;

[0021] Figure 5 Fig. 7 is a front structural schematic diagram of an air outlet assembly according to some embodiments of the present application; Figure 4 Fig. 8 is a perspective structural schematic diagram of the guide air ring shown in Fig. 7;

[0022] Figure 6 Fig. 9 is a partial cross-sectional structural schematic diagram of the guide air ring shown in Fig. 8 at the flow guide portion; Figure 5

[0023] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0024] 100 outer cover, 110 air outlet area, 111 main body area, 112 extension area, 200 impeller, 300 guide air ring, 310 flow guide portion, 311 first slot segment, 312 second slot segment, 313 third slot segment, 320 necked ring segment, 330 flared ring segment, 340 straight ring segment. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0027] ​Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection. "Connection" can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0030] The air outlet assembly provided in the embodiments of the present invention, such as Figures 2 to 6 As shown, it includes: an outer cover 100 with an air outlet area 110 (the air outlet area 110 is equipped with a grille), the air outlet area 110 including a main area 111 and an extension area 112, the extension area 112 being located outside the main area 111 and connected to the main area 111, the portion of the extension area 112 connected to the main area 111 being defined as a boundary; a fan assembly, the fan assembly being disposed inside the outer cover 100, the fan assembly including a motor bracket, a drive motor and an impeller 200 (the impeller 200 is configured as an axial flow impeller), the drive motor being mounted on the motor bracket, and the impeller 200 being mounted on the drive motor. On the rotating shaft of the machine; and the air guide ring 300, which is located between the fan assembly and the air outlet area 110. The impeller 200 and the main body area 111 are opposite to the inner hole of the air guide ring 300 (i.e., directly opposite). The extension area 112 is misaligned with the inner hole of the air guide ring 300 (in the radial direction of the air guide ring 300, the extension area 112 is completely located outside the inner hole of the air guide ring 300). A guide section 310 is provided between the extension area 112 and the air guide ring 300. The guide section 310 is configured to guide the airflow blown through the inner hole of the air guide ring 300 toward the dividing boundary to the extension area 112.

[0031] The fan assembly operates, and air flow is blown from the impeller 200 to the air outlet area 110 through the inner hole of the air guide ring 300. In the process of blowing to the inner hole of the air guide ring 300, the air flow is blown to the extension area 112 under the guidance of the air guide part 310 of the air guide ring 300, and finally blown out from the extension area 112. That is, the air flow originally blown out from the main body area 111 is divided, so that part of the air flow blown out from the main body area 111 is blown out from the extension area 112, and the other part is still blown out from the main body area 111. In this way, the blowing amount of the air flow blown out from the extension area 112 is increased, and the blowing amount of the air flow blown out from the main body area 111 is reduced, so that the air flow blown out from the air outlet area 110 is more dispersed, and the noise generated in the blowing process is smaller. Compared with the related art, the air outlet amount of the air outlet area 110 is larger under the same impeller 200 rotating speed, and the power of the driving motor of the fan assembly is lower under the same air outlet amount of the air outlet area 110.

[0032] In some examples, as shown in Figures 3 to 6 The air guide part 310 includes an air guide groove, which is arranged on the side of the air guide ring 300 facing the air outlet area 110. In this way, the structure of the air guide groove is simpler, and the air resistance generated by the air guide groove is smaller.

[0033] In some examples, as shown in Figure 4 and Figure 5 The air guide groove extends from the air inlet side of the air guide ring 300 to the air outlet side of the air guide ring 300 and to the radial outside of the air guide ring 300. In order to ensure the air guiding effect of the air guide groove, the inclination angle is set to be not greater than 60 degrees. In addition, the air guide groove extends from the radial inside of the air guide ring 300 to the radial outside of the air guide ring 300 and to the rotation direction of the impeller 200. This scheme can guide more air flow to the extension area 112, so that the air flow blown out from the air outlet area 110 is more dispersed, and the noise generated in the blowing process is smaller. Compared with the related art, the air outlet amount of the air outlet area 110 is larger under the same impeller 200 rotating speed, and the power of the driving motor of the fan assembly is lower under the same air outlet amount of the air outlet area 110.

[0034] Alternatively, the guide channel can extend obliquely from the air inlet side of the guide ring 300 to the air outlet side of the guide ring 300 towards the radially outer side of the guide ring 300, instead of extending obliquely from the radially inner side of the guide ring 300 to the radially outer side of the guide ring 300 towards the rotation direction of the impeller 200; or the guide channel can extend obliquely from the radially inner side of the guide ring 300 to the radially outer side of the guide ring 300 towards the rotation direction of the impeller 200, instead of extending obliquely from the air inlet side of the guide ring 300 to the air outlet side of the guide ring 300 towards the radially outer side of the guide ring 300, etc.; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0035] In some examples, such as Figure 6 As shown, the air guide ring 300 extends from the inlet side to the outlet side. The inner circumferential surface of the air guide ring 300 includes a constricted annular section 320 and a flared annular section 330 connected to each other. The guide groove includes a first groove section 311 and a second groove section 312 connected to each other. The first groove section 311 is located on the side of the air guide ring 300 facing the outlet area 110, and the second groove section 312 is located on the flared annular section 330. The constricted annular section 320, the flared annular section 330, and the guide groove together guide the airflow blowing from the inner hole of the air guide ring 300. In the circumference of the guide ring 300, the flared ring section 330 and the constricted ring section 320, which correspond to the area outside the second groove section 312, together prevent airflow from returning to the impeller 200 side from the area outside the second groove section 312, and the constricted ring section 320, which corresponds to the area where the second groove section 312 is located, prevents airflow from returning to the impeller 200 side from the second groove section 312.

[0036] In some examples, such as Figure 6 As shown, the inner circumferential surface of the air guide ring 300 also includes a straight ring segment 340, which is located between the constricted ring segment 320 and the flared ring segment 330 and connects the constricted ring segment 320 and the flared ring segment 330.

[0037] When the guide channel does not extend to the straight ring section 340, in the circumference of the guide ring 300, the flared ring section 330, the straight ring section 340 and the constricted ring section 320 corresponding to the area outside the second channel section 312 together prevent the airflow from returning to the impeller 200 side from the area outside the second channel section 312. The straight ring section 340 and the constricted ring section 320 corresponding to the area where the second channel section 312 is located together prevent the airflow from returning to the impeller 200 side from the second channel section 312.

[0038] When the guide channel extends to the straight annular section 340, such as Figure 6As shown, the flow guide groove further comprises a third groove segment 313 located at the straight ring segment 340 and connected with the second groove segment 312, so as to further improve the flow guiding effect of the flow guide groove. In the circumferential direction of the air guide ring 300, the portions of the flared ring segment 330, the straight ring segment 340 and the tapered ring segment 320 corresponding to the area outside the second groove segment 312 and the third groove segment 313 jointly prevent the air flow from flowing back to the impeller 200 side from the area outside the second groove segment 312 and the third groove segment 313, and the portion of the tapered ring segment 320 corresponding to the area where the second groove segment 312 and the third groove segment 313 are located prevents the air flow from flowing back to the impeller 200 side from the third groove segment 313.

[0039] In some examples, as shown in Figures 3 to 6 As shown, one end of the flow guide groove adjacent to the inner hole of the air guide ring 300 is through, and the inner surface of the flow guide groove is a concave curved surface. The air flow divided by the air guide ring 300 enters the flow guide groove from the through end of the flow guide groove, and then flows to the extension area 112 under the guidance of the concave curved surface. The air flow is guided by the concave curved surface, and the energy loss of the air flow during the blowing process is smaller, and the noise generated is smaller.

[0040] In some embodiments, as shown in Figure 2 As shown, the side wall of the outer cover 100 is an annular wall, and the air outlet area 110 is located at the annular wall and has a rectangular shape (i.e., when the annular wall is opened into a rectangular plate, the air outlet area 110 has a square shape). Four corners of the air outlet area 110 are four extension areas 112, and the flow guide part 310 comprises four flow guide grooves. The four flow guide grooves are arranged one by one corresponding to the four extension areas 112, so that the noise generated by the air flow during the blowing process is smaller. Compared with the related art, the air outlet volume of the air outlet area 110 of the present application is larger at the same impeller 200 rotating speed, and the power of the driving motor of the fan assembly of the present application is lower at the same air outlet volume of the air outlet area 110. Of course, the air outlet area 110 can also have other shapes, such as triangular shape, regular pentagonal shape, regular hexagonal shape or special shape, etc., which can all achieve the purpose of the present application, and the design idea is not deviated from the present application, which will not be described here. They all belong to the protection scope of the present application.

[0041] As shown in Figures 3 to 6 Each flow guide part 310 can comprise one flow guide groove, or each flow guide part 310 can comprise multiple flow guide grooves, and the number of flow guide grooves can be two, three or four, etc. The above can all achieve the purpose of the present application, and the design idea is not deviated from the present application, which will not be described here. They all belong to the protection scope of the present application.

[0042] The experimental comparison results of the nose assembly of the related art and the nose assembly of the present application are as follows. The difference between the two is whether the flow guide part 310 is provided.

[0043]

[0044] Table I

[0045] It can be seen that the air volume of the air outlet area 110 of the application is increased by about 4.4% to 6.3% at the same impeller 200 rotating speed, the power of the driving motor of the fan assembly of the application is reduced by about 7% at the air volume of 540 m 3 / h, and the noise generated in the blowing process of the air flow of the application is reduced by 1.7 dB at the same air volume of the air outlet area 110. The air volume is the air volume of the air outlet area 110, the power is the power of the driving motor, the rotating speed is the output rotating speed of the driving motor, and the noise is the noise generated in the blowing process of the air flow (specifically, the maximum noise measured at the air outlet area 110).

[0046] The heat pump water heater (not shown in the figure) provided by the embodiment of the application comprises a water tank body and the air outlet assembly described in any of the above embodiments, and the air outlet assembly is arranged on the water tank body. The air outlet assembly is a head assembly of the heat pump water heater.

[0047] The heat pump water heater has all the advantages of the air outlet assembly provided by any of the above embodiments, and will not be described here.

[0048] Of course, the air outlet assembly can also be an air conditioner (such as an air conditioner outdoor unit), which can also achieve the purpose of the application, and the design idea is not deviated from the design idea of the application, and will not be described here. It also belongs to the protection scope of the application.

[0049] In summary, the technical solution provided by the embodiment of the application is that the fan assembly operates, the air flow is blown from the impeller to the air outlet area through the inner hole of the air guide ring, and in the process of blowing to the inner hole of the air guide ring, the air flow blown from the inner hole of the air guide ring flows to the extension area under the guidance of the guide part, and finally blows out from the extension area. That is, the air flow originally blown out from the main body area is divided, so that part of the air flow blown out from the main body area blows out from the extension area, and the other part still blows out from the main body area. In this way, the blowing amount of the air flow blown out from the extension area is increased, the blowing amount of the air flow blown out from the main body area is reduced, the air flow blown out from the air outlet area is more dispersed, and the noise generated in the blowing process of the air flow is smaller. Compared with the related art, the air volume of the air outlet area of the application is larger at the same impeller rotating speed, and the power of the driving motor of the fan assembly of the application is lower at the same air volume of the air outlet area.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0051] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0054] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An air outlet assembly comprising: The application relates to an air outlet assembly. The air outlet assembly comprises: an outer cover provided with an air outlet area, the air outlet area comprising a main area and an extension area, the extension area being located outside the main area and connected with the main area, and the part of the extension area connected with the main area being a division boundary; a fan assembly arranged in the outer cover; and a guide ring arranged between the fan assembly and the air outlet area, the impeller of the fan assembly and the main area being opposite to the inner hole of the guide ring, and the extension area being misaligned with the inner hole of the guide ring. The extension area and the guide ring are provided with a flow guide part, the flow guide part is arranged to guide the airflow passing through the inner hole of the guide ring towards the division boundary to the extension area. The flow guide part comprises a flow guide groove arranged on the side of the guide ring facing the air outlet area. The flow guide groove extends from the radial inner side of the guide ring to the radial outer side of the guide ring and inclines towards the rotation direction of the impeller. From the air inlet side of the guide ring to the air outlet side of the guide ring, the inner circumferential surface of the guide ring comprises a connected necked ring segment and an expanded ring segment, the flow guide groove comprises a first groove segment and a second groove segment, the first groove segment is located on the side of the guide ring facing the air outlet area, and the second groove segment is located on the expanded ring segment.

2. The air outlet assembly of claim 1, wherein, The flow guide groove extends from the air inlet side of the guide ring to the air outlet side of the guide ring and inclines towards the radial outer side of the guide ring.

3. The air outlet assembly of claim 1, wherein, The inner circumferential surface of the guide ring further comprises a straight ring segment, the straight ring segment is located between the necked ring segment and the expanded ring segment and connects the necked ring segment and the expanded ring segment.

4. The air outlet assembly of claim 3, wherein, The flow guide groove further comprises a third groove segment, the third groove segment is located on the straight ring segment and connected with the second groove segment.

5. The air outlet assembly of claim 1, wherein, One end of the flow guide groove near the inner hole of the guide ring is through, and the inner surface of the flow guide groove is a concave curved surface.

6. The air outlet assembly of any one of claims 1-5, wherein, The side wall of the outer cover is an annular wall, the air outlet area is located on the annular wall and has a rectangular shape, four corners of the air outlet area are four extension areas, and the flow guide part is arranged in one-to-one correspondence with the extension areas.

7. A heat pump water heater, characterized by, The application further relates to a water tank body and an air outlet assembly as claimed in any one of claims 1 to 6, the air outlet assembly being arranged in the water tank body.

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