Warmer

Abstract

The invention relates to the technical field of household appliances, and discloses a warmer which comprises a shell, a first air outlet is formed in the top of the shell, and a second air outlet is formed in the bottom of the side face of the shell; the wind wheel assembly comprises a wind wheel, a volute tongue and a volute, the volute tongue and the volute are arranged on the peripheral side of the wind wheel in the circumferential direction of the wind wheel at intervals, and a wind wheel air inlet and a wind wheel air outlet are formed in the intervals of the two sides of the volute tongue and the volute correspondingly. And the splitter plate is arranged at the air outlet of the wind wheel and is used for splitting the air flow led out from the air outlet of the wind wheel into two air flows which are respectively communicated with the first air outlet and the second air outlet. By arranging the splitter plate, the effect that air is discharged from the upper face and the side face at the same time is achieved under the condition that the air volume is almost lossless, hot airflow discharged from the side face heats the bottom through axial air supply and slowly and upwards conveys heat through natural convection, the hot airflow discharged from the upper face can enhance the upward heat transfer rate, and therefore the total heat is increased; the heat dissipation range of the warmer is enlarged, and the requirement for warming the feet and the body of a user at the same time can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a heater. Background Art

[0002] Heaters are common household appliances that typically heat the air through convection. Currently, most baseboard heaters use vertical convection for heat transfer. However, vertical convection baseboard heaters only dissipate heat upward, making it difficult to dissipate heat in all directions. Furthermore, the area below the baseboard heater, which is above ground level, is not heated, making it difficult to warm the user's feet and resulting in a poor user experience. Summary of the Invention

[0003] In view of this, the present invention provides a heater to solve the problem in the prior art that the heat dissipation range of the heater is small and the heat is not easily dissipated to the surroundings.

[0004] The present invention provides a heater, comprising:

[0005] A shell body, wherein a first air outlet is provided at the top of the shell body, and a second air outlet is provided at the bottom of the side surface;

[0006] A wind wheel assembly is arranged in the housing, comprising a wind wheel and a volute tongue and a volute arranged at intervals on the outer peripheral side of the wind wheel along the circumference of the wind wheel, wherein the intervals on both sides of the volute tongue and the volute form a wind wheel air inlet and a wind wheel air outlet respectively;

[0007] The splitter plate is provided at the wind wheel air outlet and is used to split the air flow drawn out from the wind wheel air outlet into two air flows which are respectively connected to the first air outlet and the second air outlet.

[0008] Beneficial effect: Through the arranged diverter plate, the airflow led out from the wind wheel outlet can be diverted into two airflows connected to the first air outlet and the second air outlet respectively, and the effect of simultaneous air outlet from the top and the side can be achieved under the condition of almost no air loss. The hot air flow going out from the side realizes axial air supply to heat the bottom and slowly sends heat upward through natural convection. The hot air flow going out from the top can enhance the upward heat transfer rate, thereby increasing the overall heat, expanding the heat dissipation range of the heater, and realizing heat diffusion in a larger range. It can meet the user's needs for heating the feet and body at the same time, improve the comfort of the indoor environment, and provide users with a better experience. The overall structure is compact, the diverter plate is easy and quick to install, and has broad market application prospects. It effectively solves the problems of small heat dissipation range of existing heaters, heat is not easy to dissipate to the surroundings, and heating is inconvenient in the foot area.

[0009] In an optional embodiment, the diverter plate includes:

[0010] The diversion section extends into the wind wheel air outlet. The diversion section is an arc-shaped structure. The arc-shaped diversion section opens toward the wind wheel and is used to divert the airflow drawn out from the wind wheel air outlet into two streams.

[0011] Beneficial effect: The diversion section is located at one end close to the wind wheel outlet. The diversion section is an arc structure. The diversion section adopts an arc design, and the arc-shaped diversion section opening faces the wind wheel, which can be closer to the gas flow direction. While ensuring the diversion effect, it reduces the gas flow resistance.

[0012] In an optional embodiment, the radius R of the diversion section satisfies S1+1 / 2D≤R≤R1;

[0013] Among them, S1 is the gap between the end of the volute tongue close to the wind wheel outlet and the wind wheel, D is the diameter of the wind wheel, and R1 is the distance from the end of the volute close to the wind wheel outlet to the axis of the wind wheel.

[0014] Beneficial effect: The radius of the diversion section is designed within the above-mentioned size range, which can effectively ensure that the diversion section is located between the end of the volute tongue close to the wind wheel outlet and the end of the volute close to the wind wheel outlet in the radial direction of the wind wheel, thereby further ensuring that the airflow drawn out from the wind wheel outlet can be diverted into two paths by the diversion section, thereby ensuring the diversion effect.

[0015] In an optional embodiment, the central angle θ of the diversion section satisfies 0<θ≤1 / 4θ2;

[0016] Wherein, θ2 is the angle formed by the end of the volute tongue close to the wind rotor outlet and the end of the volute case close to the wind rotor outlet and the axis of the wind rotor.

[0017] Beneficial effect: By adopting the above-mentioned angle range design for the center angle of the diversion section, it is possible to avoid the diversion section being too long, blocking the wind wheel outlet, and affecting the size of the heater's air flow.

[0018] In an optional embodiment, the volute tongue is located above the wind wheel, and the volute is located below the wind wheel;

[0019] An angle θ1 formed between the upper end of the diversion section and the end of the volute close to the wind wheel outlet and the axis of the wind wheel satisfies 2 / 5θ2≤θ1≤2 / 3θ2.

[0020] Beneficial effect: The angle θ1 formed by the upper end of the diversion section and the end of the volute close to the wind wheel outlet and the axis of the wind wheel can be effectively ensured by adopting the design within the above-mentioned angle range, that there are openings of set lengths between the upper and lower ends of the diversion section and the volute tongue and the volute, thereby ensuring that air is discharged from both the first air outlet and the second air outlet, and that the air volume ratio is appropriate.

[0021] In an optional embodiment, the diverter plate further comprises:

[0022] The guide section is arranged at one end of the diversion section along the gas flow direction and is used to guide the two air flows to flow toward the first air outlet and the second air outlet respectively;

[0023] The connecting section and the guide section are arranged between the connecting section and the diversion section, and the connecting section is attached to and fixed on the inner wall of the shell above the second air outlet.

[0024] Beneficial effects: Through the design of the guide section, the guide section plays the role of guiding and blocking flow, and can guide the two airflows diverted by the diversion section to the direction of the first air outlet and the second air outlet respectively, avoiding the mixing of the two diverted airflows, ensuring that air is discharged from both the first air outlet and the second air outlet, so as to achieve double-sided air outlet, thereby simultaneously achieving upward convection heating and forward convection heating, improving the heating range, and meeting the user's needs for simultaneous heating of the feet and body. In addition, through the design of the fitting section, the connecting section is fitted and fixed to the inner wall of the shell located above the second air outlet, which can effectively prevent the airflow directed to the second air outlet from flowing from the gap between the diverter plate and the shell into the first air duct located between the wind wheel outlet and the first air outlet, thereby further ensuring the diversion effect.

[0025] In an optional embodiment, the gap between the volute tongue and the wind wheel gradually increases from one end of the wind wheel air inlet to one end of the wind wheel air outlet.

[0026] Beneficial effect: The volute tongue gap is designed with unequal gaps that gradually increase from one end of the wind wheel air inlet to one end of the wind wheel air outlet, which can reduce noise.

[0027] In an optional embodiment, the volute tongue includes a volute tongue main body section located on the outer peripheral side of the wind wheel, and the diameter of the wind wheel is D;

[0028] The gap between the end of the volute tongue main section close to the wind rotor air outlet and the outer edge of the wind rotor is S1, and the gap between the end of the volute tongue main section close to the wind rotor air inlet and the outer edge of the wind rotor is S2. S1 and S2 satisfy S2<S1≤1 / 6D.

[0029] Beneficial effect: The gap of the volute tongue is designed with unequal spacing, which can reduce noise. The gap S2 at the head end of the volute tongue main section close to the air inlet side is a small gap, and the gap S1 at the tail end close to the air outlet side is a large gap. The two satisfy S2<S1≤1 / 6D. Through the above design, while ensuring the noise reduction effect, the gap at the tail end of the volute tongue is avoided to be too large, which cannot well collect the gas thrown out of the wind wheel and affect the air volume.

[0030] In an optional embodiment, the length L of the volute tongue main body section satisfies 1 / 5D<L≤1 / 3D, where D is the diameter of the wind wheel.

[0031] Beneficial effect: The length of the volute tongue main section is designed to be greater than one-fifth of the wind wheel diameter and less than or equal to one-third of the wind wheel diameter, which can effectively ensure the performance of the cross-flow wind wheel. It can avoid the problem that the upper air outlet becomes a suction port due to the volute tongue main section being too short, so that the first air outlet does not blow air, and it can also avoid the problem that the volute tongue main section is too long, which increases wind resistance and reduces air volume.

[0032] In an optional embodiment, the first air outlet is provided on the top wall of the housing;

[0033] The second air outlet is provided at the bottom of the side wall of the shell, and the wind wheel air outlet is located on a side close to the second air outlet;

[0034] The heater further includes an air guide plate disposed between the volute tongue and the first air outlet;

[0035] The snail tongue includes:

[0036] The main section of the snail tongue is located above the wind wheel;

[0037] The first air guide section is formed by bending and extending the end of the volute tongue main section close to the wind wheel outlet upward. The first air guide section, the diverter plate, the housing and the air guide plate together form a second air duct, which connects the wind wheel outlet and the first air outlet.

[0038] The volute includes:

[0039] The volute main section is located below the wind wheel;

[0040] The second air guide section is formed by extending one end of the volute main section close to the wind wheel outlet toward the second air outlet. The second air guide section, the diverter plate and the shell are enclosed to form a second air duct, which connects the wind wheel outlet and the second air outlet.

[0041] Beneficial effects: The design of the air guide plate can guide the airflow to be discharged in the direction of the first air outlet. The volute tongue adopts the design of the volute tongue main section and the first air guide section, so that the volute tongue can also play the role of guiding the airflow, guiding the airflow of the upward branch to flow in the direction of the first air outlet. The volute adopts the design of the volute main section and the second air guide section, so that the volute can also play the role of guiding the airflow, guiding the airflow of the forward branch to flow in the direction of the second air outlet. The volute and the volute tongue adopt the above-mentioned design to ensure the air flow rate of the first air outlet and the second air outlet, thereby ensuring the effect of simultaneous upward convection heating and forward convection heating, improving the heating range, meeting the needs of users to warm their feet and body at the same time, and also achieving the effect of multiple uses and simplified structure.

[0042] In an optional embodiment, the heater further comprises:

[0043] The heating component is arranged on the wind inlet side of the wind wheel assembly. The heating component is arranged above the wind wheel, and the two are at least partially overlapped in the vertical direction.

[0044] Beneficial effects: The heating component is arranged on the air inlet side of the wind wheel, and the heating component and the wind wheel at least partially overlap in the vertical direction, thereby effectively ensuring the compactness of the heater in the lateral direction, that is, the width will not be too large, thereby improving the compactness of the heater structure, being more conducive to the miniaturized design of the heater, and reducing the footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is a schematic structural diagram of a heater according to an embodiment of the present invention;

[0047] Figure 2 for Figure 1 A magnified view of the structure of the wind wheel assembly;

[0048] Figure 3 is a longitudinal cross-sectional view of a heater according to an embodiment of the present invention;

[0049] Figure 4 for Figure 3 A magnified view of the structure of the middle wind wheel assembly, the second air outlet, and the diverter plate;

[0050] Figure 5 Schematic diagram of wind direction of the double-sided air outlet of the heater in an embodiment of the present invention;

[0051] Figure 6 This is a diagram showing the relationship between the dimensions of the volute tongue in an embodiment of the present invention;

[0052] Figure 7 This is a diagram showing the relationship between the dimensions of the manifold in an embodiment of the present invention;

[0053] Figure 8 Schematic diagram of the structure of the diverter plate in an embodiment of the present invention.

[0054] Description of reference numerals:

[0055] 10. Housing; 101. First air outlet; 102. Second air outlet; 11. Top plate; 111. Upper air grille; 12. Front plate; 121. Front air grille; 13. Rear plate; 130. Air inlet; 14. Bottom plate;

[0056] 20. Wind wheel assembly; 201. Wind wheel air inlet; 202. Wind wheel air outlet;

[0057] 21. Wind wheel;

[0058] 22. Snail tongue; 221. Snail tongue main section; 222. First air guide section;

[0059] 23. Volute; 231. Volute main section; 232. Second air guide section;

[0060] 30. Diverter plate; 31. Diverter section; 32. Guide section; 33. Connecting section; 34. Connecting ear;

[0061] 40. Wind deflector;

[0062] 50. Heat-generating component; 60. Upper air inlet cover; 70. Lower air inlet cover. DETAILED DESCRIPTION

[0063] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0064] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0066] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0067] The heater provided in this embodiment can at least solve the following problems existing in existing skirting heaters:

[0068] 1. It is inconvenient to warm the feet with a skirting board heater; 2. The heat dissipation range of the skirting board heater is small, and the heat is not easy to dissipate to the surroundings.

[0069] The following combination Figures 1 to 8 , describing embodiments of the present invention.

[0070] According to an embodiment of the present invention, on the one hand, the present invention provides a heater, including a shell 10, a wind wheel assembly 20, and a diverter plate 30. The shell 10 is provided with a first air outlet 101 on the top and a second air outlet 102 on the bottom of the side. The wind wheel assembly 20 is arranged in the shell 10. The wind wheel assembly 20 includes a wind wheel 21 and a volute 22 and a volute 23 arranged at intervals along the circumference of the wind wheel 21 on the outer peripheral side of the wind wheel 21. The intervals on both sides of the volute 22 and the volute 23 form a wind wheel air inlet 201 and a wind wheel air outlet 202, respectively. The diverter plate 30 is located in the shell 10. The diverter plate 30 is provided at the wind wheel air outlet 202, and is used to divert the airflow drawn out from the wind wheel air outlet 202 into two airflows respectively connected to the first air outlet 101 and the second air outlet 102.

[0071] The above embodiment provides a heater with double-sided air outlet. Through the arranged diverter plate 30, the airflow drawn out from the wind wheel outlet 202 can be diverted into two airflows respectively connected to the first air outlet 101 and the second air outlet 102, so that the effect of simultaneous air outlet from the top and the side can be achieved with almost no loss of air volume. The hot air flow out of the side realizes axial air supply to heat the bottom and slowly sends heat upward through natural convection. The hot air flow out of the top can enhance the upward heat transfer rate, thereby increasing the overall heat, expanding the heat dissipation range of the heater, and realizing heat diffusion in a larger range. It can meet the user's needs for heating the feet and body at the same time, improve the comfort of the indoor environment, and provide a better user experience. The overall structure is compact, the diverter plate 30 is easy and quick to install, and has broad market application prospects. It effectively solves the problems of the existing heater with a small heat dissipation range, heat not easy to dissipate to the surroundings, and inconvenience in heating the foot area.

[0072] Specifically, the first air outlet 101 is arranged on the top wall of the shell 10; the second air outlet 102 is arranged at the bottom of the side wall of the shell 10, the wind wheel assembly 20 is arranged at the bottom position of the shell 10, and the wind wheel air outlet 202 is located on the side close to the second air outlet 102, the diverter plate 30 is located between the volute 22 and the volute 23, the diverter plate 30 is fixed on the inner wall of the shell 10, the wind wheel 21 is a cross-flow wind wheel 21, the diverter plate 30 is located between the volute 22 and the volute 23 on the air outlet side, the diverter plate 30 can divert the hot air blown out from the wind wheel air outlet 202 into two paths, and discharge them from the first air outlet 101 and the second air outlet 102 respectively.

[0073] Furthermore, the second air outlet 102 is provided at the bottom position of the front wall of the shell 10, so that the heater can achieve the effect of simultaneously discharging air from the top and the front side. Specifically, the shell 10 includes a top plate 11, a bottom plate 14, a front plate 12, a rear plate 13 and left and right side plates. An upper air outlet grille 111 is provided on the top plate 11, and the first air outlet 101 is formed by the grille gap of the upper air outlet grille 111. A front air outlet grille 121 is provided at the bottom position of the front plate 12, and the second air outlet 102 is formed by the grille gap of the front air outlet grille 121. An air inlet 130 is provided on the rear plate 13, and the air inlet 130 is connected to the external space, and is used to introduce external air into the interior of the shell 10 for heating, and then transport it to the wind wheel assembly 20. The diverter plate 30 is fixedly mounted on the shell 10.

[0074] In some embodiments, the diverter plate 30 includes a diverter section 31, which extends into the wind wheel outlet 202. The diverter section 31 is an arc-shaped structure, and the arc-shaped diverter section 31 opens toward the wind wheel 21, and is used to divert the airflow drawn out from the wind wheel outlet 202 into two streams.

[0075] In the above embodiment, the diversion section 31 is located at one end close to the wind wheel outlet 202. The diversion section 31 is an arc structure. The diversion section 31 adopts an arc design, and the arc-shaped diversion section 31 opens toward the wind wheel 21, which can be closer to the gas flow direction. While ensuring the diversion effect, it reduces the gas flow resistance.

[0076] Of course, in other alternative embodiments, the diverter section 31 may also adopt an inclined straight structure.

[0077] In some embodiments, combined Figure 6 and Figure 7 As shown, the radius R of the diversion section 31 satisfies S1+1 / 2D≤R≤R1; wherein S1 is the gap between the end of the volute tongue 22 close to the wind wheel air outlet 202 and the wind wheel 21, D is the diameter of the wind wheel 21, and R1 is the distance from the end of the volute 23 close to the wind wheel air outlet 202 to the axis of the wind wheel 21.

[0078] In the above embodiment, the radius of the diverter section 31 is designed within the above-mentioned size range, which can effectively ensure that the diverter section 31 is located between the end of the volute tongue 22 close to the wind wheel air outlet 202 and the end of the volute 23 close to the wind wheel air outlet 202 in the radial direction of the wind wheel 21, thereby further ensuring that the airflow drawn out from the wind wheel air outlet 202 can be diverted into two paths by the diverter section 31, thereby ensuring the diversion effect.

[0079] In some preferred implementations of the above embodiments, the center of the arc-shaped diverter section 31 coincides with the axis of the rotor 21, and an equal gap is provided between the diverter section 31 and the rotor 21, i.e., the curvature of the diverter section 31 is the same as the curvature of the outer edge of the rotor 21, and the spacing between the two is constant. The radius R of the diverter section 31 satisfies S1+1 / 2D≤R≤R1, where R is greater than or equal to the sum of the gap between the tail end of the volute tongue main section 221 (the end closest to the rotor air outlet 202) and the rotor 21 and the radius of the rotor 21, and is less than or equal to the distance from the tail end of the volute main section 231 (i.e., the end closest to the air outlet) to the axis of the crossflow rotor 21.

[0080] In some embodiments, the central angle θ of the diversion section 31 satisfies 0<θ≤1 / 4θ2; wherein θ2 is the angle formed by the end of the volute tongue 22 close to the wind wheel air outlet 202 and the end of the volute 23 close to the wind wheel air outlet 202 and the axis of the wind wheel 21.

[0081] In the above embodiment, the central angle of the diversion section 31 is designed to be less than or equal to one quarter of θ2, which can prevent the diversion section 31 from being too long, blocking the wind wheel outlet 202, and affecting the size of the heater's air flow.

[0082] In some embodiments, the volute tongue 22 is located above the wind wheel 21, and the volute 23 is located below the wind wheel 21; the angle θ1 formed by the upper end of the diversion section 31 and the end of the volute 23 close to the wind wheel outlet 202 and the axis of the wind wheel 21 satisfies 2 / 5θ2≤θ1≤2 / 3θ2.

[0083] In the above embodiment, the angle θ1 formed by the upper end of the diverter section 31 and the end of the volute 23 close to the wind wheel outlet 202 and the axis of the wind wheel 21 is designed to be greater than or equal to two-fifths θ2 and less than or equal to two-thirds θ2, which can effectively ensure that there are openings of a set length between the upper and lower ends of the diverter section 31 and the volute tongue 22 and the volute 23, thereby ensuring that air is discharged from the first air outlet 101 and the second air outlet 102, and the air volume ratio is appropriate.

[0084] In some embodiments, the diverter plate 30 further includes a guide section 32 disposed at one end of the diverter section 31 along the gas flow direction, for guiding the two air flows toward the first air outlet 101 and the second air outlet 102, respectively. The diverter plate 30 further includes a connecting section 33 disposed between the connecting section 33 and the diverter section 31. The connecting section 33 is attached to and fixed to the inner wall of the housing 10 above the second air outlet 102. Specifically, the guide section 32 is disposed at the end of the diverter section 31 along the gas flow direction.

[0085] In the above embodiment, the design of the guide section 32 allows the guide section 32 to play a role in guiding and blocking the flow. It can guide the two airflows diverted by the diversion section 31 toward the first air outlet 101 and the second air outlet 102 respectively, preventing the two diverted airflows from mixing, ensuring that both the first air outlet 101 and the second air outlet 102 are discharged, thereby achieving double-sided airflow, thereby simultaneously achieving upward convection heating and forward convection heating, increasing the heating range, and meeting the user's need for simultaneous heating of the feet and body. Furthermore, through the design of the fitting section, the connecting section 33 is fitted and fixed to the inner wall of the housing 10 located above the second air outlet 102, which can effectively prevent the airflow directed to the second air outlet 102 from flowing from the gap between the diverter plate 30 and the housing 10 into the first air duct located between the wind wheel outlet 202 and the first air outlet 101, thereby further ensuring the diversion effect.

[0086] Specifically, the guide section 32 is straight or arc-shaped. Preferably, the guide section 32 is arc-shaped, and the arc-shaped guide section 32 opens toward the second air outlet 102. Such a design enables the guide section 32 to converge the airflow diverted by the diversion section 31 and guide it to the second air outlet 102, thereby achieving a better diversion and gathering effect.

[0087] Furthermore, the connecting section 33 is a vertically disposed flat plate-like structure, which is attached to the inner wall of the housing 10. Preferably, the connecting section 33 is attached to the upper side of the front air grille 121. The diverter plate 30 also includes connecting ears 34 disposed at both ends. The connecting ears 34 are provided with screw holes. Preferably, the connecting ears 34 are fixedly disposed at both ends of the guide section 32. The connecting section 33 is attached to the upper side of the front air grille 121, and the connecting ears 34 on both sides are fixed to the left and right side panels of the housing 10 by screws.

[0088] In some embodiments, combined Figure 3 、 Figure 4 and Figure 6 As shown, the gap between the volute tongue 22 and the wind wheel 21 gradually increases from one end of the wind wheel air inlet 201 to one end of the wind wheel air outlet 202.

[0089] In the above embodiment, the volute tongue gap is designed with unequal spacing that gradually increases from one end of the wind wheel air inlet 201 to one end of the wind wheel air outlet 202, which can reduce noise.

[0090] In some embodiments, the volute tongue 22 includes a volute tongue main section 221 located on the outer peripheral side of the wind wheel 21; the gap between the end of the volute tongue main section 221 close to the wind wheel air outlet 202 and the outer edge of the wind wheel 21 is S1, and the gap between the end of the volute tongue main section 221 close to the wind wheel air inlet 201 and the outer edge of the wind wheel 21 is S2, wherein S1>S2.

[0091] Preferably, S1 and S2 satisfy S2 < S1 ≤ 1 / 6D, where D is the diameter of the wind wheel 21. Preferably, S2 < S1 ≤ 0.16D.

[0092] In the above embodiment, the gap of the volute tongue is designed as an unequal gap, which can reduce noise. The gap S2 at the head end of the volute tongue main section 221 close to the air inlet side is a small gap, and the gap S1 at the tail end close to the air outlet side is a large gap. The two satisfy S2<S1≤1 / 6D. By setting S1 to be greater than S2 and less than one-sixth of the diameter of the wind wheel 21, while ensuring the noise reduction effect, it is avoided that the gap at the tail end of the volute tongue 22 is too large, which cannot well collect the gas thrown out of the wind wheel 21 and affect the air volume.

[0093] Combining the noise and air volume comparison data of 22 volute tongues with equal and unequal spacing, as well as Table 2, which shows that the design of 22 volute tongues with unequal spacing can achieve the effect of noise reduction, but it will sacrifice the air volume. Generally, the power of the baseboard heater is 2200W. If the heat is to be dissipated only by forced convection of the fan, the air volume must be at least 125m3. 3 / h, so the gap at the tail end of the volute tongue 22 should not be too large. Therefore, in this embodiment, S1 is limited to less than or equal to 1 / 6D.

[0094] Table 1 - Comparison of noise and air volume between equidistant and unequally spaced gaps of volute tongue 22

[0095] Air volume noise <![CDATA[Equidistant (S1 = S2 = 4mm)]]> 161 53.6 <![CDATA[Unequal pitch (S1 = 6.8 mm, S2 = 4 mm)]]> 141 49.5

[0096] Table 2 - Air volume changes with volute tongue clearance

[0097] Gap between the two ends of the snail tongue <![CDATA[Air volume (m 3 / h)]]> <![CDATA[S1=4mm,S2=4mm]]> 161 <![CDATA[S1=5.4mm,S2=4mm]]> 155 <![CDATA[S1=6.8mm,S2=4mm]]> 142 <![CDATA[S1=8mm,S2=4mm]]> 125

[0098] In some embodiments, the length L of the volute tongue main section 221 satisfies 1 / 5D<L≤1 / 3D, where D is the diameter of the wind wheel 21. Preferably, L≤0.33D.

[0099] In the above embodiment, the length of the volute tongue main section 221 is designed to be greater than one-fifth of the diameter of the wind wheel 21 and less than or equal to one-third of the diameter of the wind wheel 21, which can effectively ensure the performance of the cross-flow wind wheel 21. It can avoid the volute tongue main section 221 being too short, which causes the upper air outlet to become a suction port, so that the first air outlet 101 does not blow air, and can also avoid the volute tongue main section 221 being too long, which increases wind resistance and reduces air volume.

[0100] Specifically, combined with Table 3 - Table of Changes in Air Volume with Length of the Snail Tongue Main Section 221, it can be seen that if the length of the snail tongue 22 is too small, the first air outlet 101 on the upper side will become a suction port. When L = 0.2D, the upper air volume is 0. When L is too long, the wind resistance will increase and the air volume will be reduced. Therefore, in this embodiment, the length L of the snail tongue main section 221 is limited to within the range of 1 / 5D < L ≤ 1 / 3D.

[0101] Table 3 - Air volume changes with the length of the main section 221 of the volute tongue

[0102] L <![CDATA[Air volume (m 3 / h)]]> 0.2D 131 (the air volume above is 0) 0.24D 142 0.28D 136 0.33D 127

[0103] In some embodiments, combined Figures 1 to 3 As shown, the heater further includes an air deflector 40 disposed between the volute 22 and the first air outlet 101. The volute 22 includes a volute main section 221 and a first air deflector section 222. The volute main section 221 is located above the wind wheel 21. The first air deflector section 222 is formed by an upwardly bent extension of the volute main section 221 at one end near the wind wheel air outlet 202. The first air deflector section 222, the diverter plate 30, the housing 10, and the air deflector 40 together form a second air duct, which connects the wind wheel air outlet 202 and the first air outlet 101.

[0104] Further, combined with Figures 1 to 4 As shown, the volute 23 includes a volute main section 231 and a second air guide section 232. The volute main section 231 is located below the wind wheel 21; the second air guide section 232 is formed by extending one end of the volute main section 231 close to the wind wheel air outlet 202 toward the second air outlet 102. The second air guide section 232, the diverter plate 30, and the shell 10 are enclosed to form a second air duct. The second air duct connects the wind wheel air outlet 202 and the second air outlet 102.

[0105] In the above embodiment, the design of the air guide plate 40 can guide the airflow to be discharged in the direction of the first air outlet 101. The volute 22 adopts the design of the volute main section 221 and the first air guide section 222, so that the volute 22 can also play the role of guiding the airflow in the upward branch to flow in the direction of the first air outlet 101. The volute 23 adopts the design of the volute main section 231 and the second air guide section 232, so that the volute 23 can also play the role of guiding the airflow in the forward branch to flow in the direction of the second air outlet 102. By adopting the above design, the volute 23 and the volute tongue 22 can ensure the air flow rate of the first air outlet 101 and the second air outlet 102, thereby ensuring the effects of simultaneous upward convection heating and forward convection heating, improving the heating range, meeting the needs of the user's feet and body for simultaneous heating, and also achieving the effect of multiple uses and simplified structure.

[0106] Specifically, the volute tongue main section 221 and the first air guide section 222 are integrally formed, the first air guide section 222 is a vertical wall, and the first air guide section 222 can guide the airflow led out by the wind wheel outlet 202 to flow in the vertical direction toward the first air outlet 101. The air guide plate 40 has a third air guide wall, and the third air guide wall is arranged in the vertical direction. The third air guide wall and the first air guide section 222 are located on the same plane, and the two work together to guide the airflow to the first air outlet 101.

[0107] Furthermore, the volute main section 231 and the second air guide section 232 are integrally formed, the volute main section 231 is arc-shaped, and the second air guide section 232 includes an air guide portion and a connecting portion. The air guide portion is located between the connecting portion and the volute main section 231. The air guide portion is formed by the end of the volute main section 231 close to the air outlet side being bent obliquely downward and extending toward the second air outlet 102. The connecting portion is formed by the end of the air guide portion being bent vertically downward and extending. The connecting portion is attached to the front air outlet grille 121 below the second air outlet 102 located at the lowest position. Through the above design, the second air guide section 232 can cooperate with the diverter plate 30 to form a relatively closed second air duct, thereby reducing air volume loss.

[0108] Furthermore, along the airflow direction, the volute tongue main section 221 and the volute main section 231 respectively have an air inlet end and an air outlet end. The gap between the air inlet end of the volute tongue main section 221 and the air inlet end of the volute main section 231 constitutes the wind wheel air inlet 201, and the gap between the air outlet end of the volute tongue main section 221 and the air outlet end of the volute main section 231 constitutes the wind wheel air outlet 202.

[0109] In some specific embodiments, S1 is the gap between the air outlet end of the volute tongue main section 221 and the wind wheel 21, and R1 is the distance from the volute main section 231 to the axis of the wind wheel 21. θ2 is the angle formed by the air outlet end of the volute tongue main section 221, the air outlet end of the volute main section 231, and the axis of the wind wheel 21. The angle θ1 formed by the upper end of the diversion section 31, the air outlet end of the volute main section 231, and the axis of the wind wheel 21 satisfies 2 / 5θ2≤θ1≤2 / 3θ2. The gap between the air outlet end of the volute tongue main section 221 and the outer edge of the wind wheel 21 is S1, and the gap between the air inlet end of the volute tongue main section 221 and the outer edge of the wind wheel 21 is S2.

[0110] Furthermore, in this embodiment, the volute 23 is fixed on the bottom plate 14 of the housing 10 .

[0111] In some embodiments, combined Figure 1 、 Figure 3 and Figure 5 As shown, the heater further includes a heating component 50, which is arranged on the air inlet side of the wind wheel assembly 20. The heating component 50 is arranged above the wind wheel 21, and the two are at least partially overlapped in the vertical direction.

[0112] In the above embodiment, the heating component 50 is arranged on the air inlet side of the wind wheel 21, and the heating component 50 and the wind wheel 21 at least partially overlap in the vertical direction, thereby effectively ensuring the compactness of the heater in the lateral direction, that is, the width will not be too large, thereby improving the compactness of the heater structure, being more conducive to the miniaturized design of the heater, and reducing the floor space.

[0113] Specifically, the projections of the heating component 50 and the wind wheel 21 along the height direction of the outer shell at least partially overlap, and the projections of the heating component 50 and the wind wheel 21 in the height direction of the outer shell at least partially overlap, thereby effectively ensuring the compactness of the heater in the lateral direction, that is, the width will not be too large, thereby improving the compactness of the overall structure, being more conducive to the miniaturized design of the overall machine, and reducing the footprint.

[0114] Furthermore, the heating component 50 is located between the air inlet 130 and the wind wheel 21, and an upper air inlet cover 60 and a lower air inlet cover 70 are provided at the air inlet 130 of the shell 10. The upper air inlet cover 60 is located above the heating component 50, and the lower air inlet cover 70 is located below the heating component 50. The upper air inlet cover 60 and the lower air inlet cover 70 are enclosed to form an air inlet channel connecting the air inlet 130 and the wind wheel air inlet 201, and the heating component 50 is located in the air inlet channel.

[0115] The specific structure and working principle of the heater of this embodiment are introduced below with reference to the accompanying drawings.

[0116] The specific structure is as follows:

[0117] Combine Figures 1 to 4 As shown, the heater provided in this embodiment includes a shell 10 (including a top plate 11, a bottom plate 14, a front plate 12, a rear plate 13 and left and right side plates, a front air outlet grille 121, and an upper air outlet grille 111), an upper air inlet cover 60, a heating component 50, a lower air inlet cover 70, a wind wheel assembly 20 (including a wind wheel 21, a volute 22, and a volute 23), a diverter plate 30, and a guide plate. The rear plate 13 is provided with a number of air inlet holes to form an air inlet 130. The heating component 50 is located on the air inlet side of the wind wheel 21. The upper air inlet cover 60 and the lower air inlet cover 70 are respectively located on the upper and lower sides of the heating component 50, covering the heating component 50 to ensure that the wind sucked in by the wind wheel 21 can effectively take away the heat of the heating component 50. The volute 23 is located on the lower side of the wind wheel 21 and is fixed on the bottom plate 14. The volute 23 includes a volute main section 231 and a second air guide section 232 formed by extending the volute main section 231. The second air guide section 232 and the diverter plate 30 form a second air duct. The volute tongue 22 is located on the upper side of the wind wheel 21. The volute tongue 22 includes a volute tongue main section 221 and a first air guide section 222 provided on the volute tongue main section 221. The first air guide section 222 and the diverter plate 30, the front plate 12 and the air guide plate 40 form a first air duct. Combined Figure 3 、 Figure 4 as well as Figure 7 As shown, the diverter plate 30 includes an arc-shaped diverter section 31 located on the wind outlet side of the wind wheel 21. The diverter section 31 is between the volute 23 and the volute tongue 22 and is used to divide the airflow led out of the wind wheel 21 into two front and upper airflows.

[0118] Here’s how it works:

[0119] like Figure 5 As shown, when the heater is operating, the impeller 21 rotates, and cold air enters the interior of the housing 10 through the air inlet 130 of the rear panel 13. It is heated to hot air by the heat-generating component 50 and flows out of the impeller 21. The diverter plate 30 divides the hot air into two streams, one forward and one upward, and then flows out through the front grille 121 and the upper grille 111 on the top panel 11. The hot air flow from the front grille 121 achieves axial air supply, heating the bottom and slowly transferring heat upward through natural convection. The hot air flow from the upper grille 111 enhances the upward heat transfer rate, thereby increasing the overall heat output and expanding the range of heat dissipation from the skirting board.

[0120] Combined with the following Table 4 - a comparison table of the air supply volume of the heater of this application and the traditional single-front heater, the double-sided air outlet skirting air volume provided by this application (taking S1=4mm, S2=6.8mm, L=12mm, D=50mm, R=35.7mm, R1=43.8mm, θ=9.4°, θ1=38°, θ2=72° as an example) can reach the level of traditional single-sided air outlet air volume.

[0121] Table 4 - Comparison of air supply volume between the heater of this application and the traditional single front heater

[0122]

[0123] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations shall fall within the scope of protection of the embodiments of the present application.

Claims

1. A heater, characterized in that: include: A housing (10), wherein the top of the housing (10) is provided with a first air outlet (101), and the bottom of the side is provided with a second air outlet (102); A wind wheel assembly (20) is arranged in the housing (10), comprising a wind wheel (21) and a volute (22) and a volute (23) arranged at intervals along the circumference of the wind wheel (21) on the outer peripheral side of the wind wheel (21), wherein the intervals on both sides of the volute (22) and the volute (23) respectively form a wind wheel air inlet (201) and a wind wheel air outlet (202); A splitter plate (30) is provided at the wind wheel air outlet (202) and is used to split the airflow drawn out from the wind wheel air outlet (202) into two airflows respectively connected to the first air outlet (101) and the second air outlet (102).

2. The heater according to claim 1, characterized in that The diverter plate (30) comprises: The diversion section (31) extends into the wind wheel air outlet (202), and the diversion section (31) is an arc-shaped structure. The arc-shaped diversion section (31) opens toward the wind wheel (21) and is used to divert the airflow drawn out from the wind wheel air outlet (202) into two streams.

3. The heater according to claim 2, characterized in that The radius R of the diversion section (31) satisfies S1+1 / 2D≤R≤R1; Wherein, S1 is the gap between one end of the volute tongue (22) close to the wind wheel air outlet (202) and the wind wheel (21), D is the diameter of the wind wheel (21), and R1 is the distance from one end of the volute (23) close to the wind wheel air outlet (202) to the axis of the wind wheel (21).

4. The heater according to claim 2, characterized in that The center angle θ of the diversion section (31) satisfies 0<θ≤1 / 4θ2; Wherein, θ2 is the angle formed by one end of the volute tongue (22) close to the wind wheel air outlet (202), one end of the volute (23) close to the wind wheel air outlet (202), and the axis of the wind wheel (21).

5. The heater according to claim 3, characterized in that The volute tongue (22) is located above the wind wheel (21), and the volute (23) is located below the wind wheel (21); An angle θ1 formed between the upper end of the diversion section (31), one end of the volute (23) close to the wind wheel air outlet (202), and the axis of the wind wheel (21) satisfies 2 / 5θ2≤θ1≤2 / 3θ2.

6. The heater according to any one of claims 2 to 5, characterized in that: The diverter plate (30) further comprises: A guide section (32) is provided at one end of the diversion section (31) along the gas flow direction and is used to guide the two air flows to flow toward the first air outlet (101) and the second air outlet (102), respectively; A connecting section (33), the guide section (32) is arranged between the connecting section (33) and the diversion section (31), and the connecting section (33) is attached to and fixed on the inner wall of the shell (10) located above the second air outlet (102).

7. The heater according to any one of claims 1 to 5, characterized in that: The gap between the volute tongue (22) and the wind wheel (21) gradually increases from one end of the wind wheel air inlet (201) to one end of the wind wheel air outlet (202).

8. The heater according to any one of claims 1 to 5, characterized in that: The volute tongue (22) comprises a volute tongue main body section (221) located on the outer peripheral side of the wind wheel (21), and the diameter of the wind wheel (21) is D; The gap between one end of the volute tongue main section (221) close to the wind wheel air outlet (202) and the outer edge of the wind wheel (21) is S1, and the gap between one end of the volute tongue main section (221) close to the wind wheel air inlet (201) and the outer edge of the wind wheel (21) is S2, and S1 and S2 satisfy S2<S1≤1 / 6D; And / or, the length L of the volute tongue main section (221) satisfies 1 / 5D<L≤1 / 3D, wherein D is the diameter of the wind wheel (21).

9. The heater according to any one of claims 1 to 5, characterized in that: The first air outlet (101) is provided on the top wall of the housing (10); The second air outlet (102) is provided at the bottom of the side wall of the housing (10), and the wind wheel air outlet (202) is located on a side close to the second air outlet (102); The heater further comprises an air guide plate (40) arranged between the volute tongue (22) and the first air outlet (101); The snail tongue (22) comprises: The volute tongue main body section (221) is located above the wind wheel (21); A first air guide section (222) is formed by bending and extending an end of the volute tongue main section (221) close to the wind wheel air outlet (202) upwards, the first air guide section (222) and the diverter plate (30), the housing (10) and the air guide plate (40) together forming a second air duct, the second air duct communicating with the wind wheel air outlet (202) and the first air outlet (101); The volute (23) comprises: a volute main body section (231), the volute main body section (231) being located below the wind wheel (21); The second air guide section (232) is formed by extending from one end of the volute main section (231) close to the wind wheel air outlet (202) toward the second air outlet (102), and the second air guide section (232), the diverter plate (30), and the housing (10) together form a second air duct, which connects the wind wheel air outlet (202) and the second air outlet (102).

10. The heater according to any one of claims 1 to 5, characterized in that: The heater also includes: A heating component (50) is arranged on the air inlet side of the wind wheel assembly (20). The heating component (50) is arranged above the wind wheel (21), and the two at least partially overlap in the vertical direction.

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