Bath heater

Abstract

The embodiment of the utility model relates to a bath heater which comprises a box body and an air blowing channel located in the box body. The box body is provided with a first air inlet and an air blowing opening which are communicated with the air blowing channel, and the air blowing opening extends in the length direction of the box body; part of the air duct wall of the air blowing duct obliquely extends towards the end part in the length direction of the air blowing opening, and a first included angle is formed between the part of the air duct wall and the length direction of the air blowing opening; an air blowing wind wheel used for generating airflow is arranged in the air blowing channel, a second included angle is formed between a connecting line between the rotating center of the air blowing wind wheel and the end portion and the length direction of the air blowing opening, and the first included angle is smaller than the second included angle, so that the bath heater meets the requirements of users.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of household electrical appliances, and in particular to a bathroom heater. Background Art

[0002] With the improvement of people's living standards, bathroom heaters have gradually become popular in most families. Bathroom heaters are generally installed in bathrooms and are devices that integrate functions such as blowing and heating. The bathroom heater includes a shell and an air duct arranged in the shell. The air duct has an air supply port that is connected to the outside to supply air to the bathroom. However, the bathroom heaters in the related art cannot meet the needs of users. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, an embodiment of the utility model provides a bathroom heater.

[0004] The embodiment of the utility model provides a bathroom heater, comprising a box body and an air blowing duct located in the box body;

[0005] The box body is provided with a first air inlet and an air outlet which are connected with the air blowing duct, and the air outlet is extended along the length direction of the box body;

[0006] Part of the duct wall of the blowing duct extends obliquely toward the end portion in the length direction of the blowing port, and forms a first angle with the length direction of the blowing port; a blowing wheel for generating airflow is arranged in the blowing duct, and a line between a rotation center of the blowing wheel and the end portion forms a second angle with the length direction of the blowing port, and the first angle is smaller than the second angle.

[0007] The bathroom heater provided by the embodiment of the utility model makes part of the duct wall of the blowing duct extend obliquely toward the end in the length direction of the blowing port, and forms a first angle with the length direction of the blowing port, and makes a second angle between a line connecting the rotation center and the end of the blowing wheel in the blowing duct and the length direction of the blowing port, and the first angle is smaller than the second angle. Compared with the solution in which the first angle is too large, the aggregation of the airflow in the blowing duct at the part of the duct wall of the blowing duct can be improved to a certain extent, and the wind gathering effect of the airflow at the part of the duct wall of the blowing duct can be improved to a certain extent, which is beneficial to improving the blowing efficiency and the blowing volume, so that the bathroom heater can meet the needs of users and improve the user experience.

[0008] In some embodiments, the box body has a guide extension wall;

[0009] The guide extension wall extends obliquely toward the end portion to form a partial duct wall of the blowing duct.

[0010] In some embodiments, the box body further comprises a blowing wall connected to the guide extension wall and located on the outer peripheral side of the blowing wheel;

[0011] The joint between the guide extension wall and the air blowing surrounding wall has an arc segment, and the center of the arc segment is located outside the air blowing duct;

[0012] The radius corresponding to the arc segment is between 5% and 20% of the outer contour radius of the blowing wheel.

[0013] In some embodiments, the first angle is between 10° and 30°.

[0014] In some embodiments, the air outlet area of ​​one end of the air blowing duct connected to the air blowing port is larger than the air blowing area at the air blowing port.

[0015] In some embodiments, the plane where the air outlet end of the blowing duct is located intersects with the plane where the blowing port is located, and the blowing port and the blowing duct are connected through a guide channel section extending along the length direction of the blowing port;

[0016] At least part of the inner channel wall of the guide channel section is an arc-shaped wall that is recessed in a direction away from the center of the guide channel section; and / or, one end of the guide channel section close to the blowing duct is provided with a spoiler that is at least used to disrupt the airflow entering the guide channel section; and / or, the wind flow area of ​​one end of the guide channel section close to the blowing duct is smaller than the wind flow area of ​​one end of the guide channel section close to the blowing port.

[0017] In some embodiments, the blowing wheel has a first wind wheel air inlet connected to the first wind inlet on one axial side thereof, and a first wind wheel air outlet connected to the first wind wheel air inlet is provided on a side wall of the blowing wheel;

[0018] The box body also has an air blowing wall, which is arranged around at least part of the outer side of the air blowing wheel in the radial direction, and forms a first air gap between the air blowing wall and the air outlet of the first wind wheel to communicate with the air blowing outlet;

[0019] The first air gap gradually increases along the rotation direction of the blowing wheel.

[0020] In some embodiments, in two first air flow gaps that are opposite to each other and located on the same diameter, the maximum value of the first air flow gap is between 3 and 4 times the minimum value of the first air flow gap.

[0021] In some embodiments, a guide surface is formed on the inner wall of the first air inlet and extends obliquely toward the inner cavity of the box body; the guide surface is used to guide at least part of the airflow at the first air inlet;

[0022] The inner diameter of the first air inlet is smaller than the size of the first wind wheel air inlet; and / or the outer diameter of the blowing wind wheel is not smaller than the outer diameter of the first air inlet.

[0023] In some embodiments, a ventilation duct is further provided in the box body, and the blowing duct and the ventilation duct are arranged in the box body at intervals along the length direction of the blowing port;

[0024] The ventilation duct is provided with a ventilation wheel for generating airflow; the box body is provided with a ventilation port and a second air inlet both of which are connected to the ventilation duct;

[0025] Part of the duct wall of the blowing duct extends to the channel wall of the ventilation duct, so that part of the blowing port and part of the duct wall of the blowing duct correspond to the ventilation duct in the length direction of the blowing port.

[0026] In some embodiments, the inner wall of the ventilation port is staggered with the outlet end of the ventilation duct, and a guide member for guiding the airflow at the outlet end of the ventilation duct to the ventilation port is provided between the ventilation duct and the ventilation port;

[0027] The guide member is disposed at the ventilation port, and is obliquely extended from the duct wall of the ventilation duct toward the ventilation port.

[0028] In some embodiments, the ventilation wheel has a second wind wheel air inlet on one axial side thereof and is connected to the second air inlet, and the side wall of the ventilation wheel has a second wind wheel air outlet connected to the blowing air duct;

[0029] The channel wall of the partial ventilation duct is arranged on the radial outer side of the ventilation wind wheel, and a second air gap communicating with the ventilation port is formed between the second wind wheel air outlet and the channel wall of the partial ventilation duct.

[0030] In some embodiments, the ventilation port is located on a radial side of the ventilation wheel, and in the axial direction of the ventilation wheel, the size of the second wind wheel air outlet is adapted to the size of the ventilation port, and the center of the second wind wheel air outlet is flush with the center of the ventilation port.

[0031] In some embodiments, in the length direction of the box body, the end portion is located on a side of the rotation center of the ventilation impeller facing the blowing impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the embodiments of the present utility model.

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 It is a partial structural exploded diagram of the bathroom heater described in the embodiment of the utility model;

[0035] Figure 2 It is a partial structural top view of the bathroom heater described in the embodiment of the utility model;

[0036] Figure 3 for Figure 2 The structure after removing the cover Figure 1 ;

[0037] Figure 4 for Figure 3 The enlarged view of point I in the middle;

[0038] Figure 5 for Figure 3 Sectional view along AA direction;

[0039] Figure 6 for Figure 2 The structure after removing the cover Figure 2 .

[0040] Among them, 1, box body; 11, box body; 110, blowing air duct; 1101, first drive motor; 111, blowing wall; 1111, opening; 112, guide extension wall; 1121, arc segment; 113, guide member; 114, ventilation air duct; 1141, second drive motor; 115, ventilation port; 12, cover; 121, first air inlet; 122, blowing port; 1221, long side; 123, second air inlet 1. opening; 124. notch; 2. guide channel section; 21. arc-shaped wall; 22. spoiler; 3. blowing wind wheel; 31. first wind wheel air inlet; 32. first wind wheel air outlet; 33. first wind gap; 4. ventilation wind wheel; 41. second wind wheel air inlet; 42. second wind wheel air outlet; 43. second wind gap; 5. guide; 6. controller; 7. wiring terminal; 8. wire buckle; 9. isolation support; 10. wiring cover. DETAILED DESCRIPTION

[0041] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the scheme of the embodiments of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the utility model, but the embodiments of the utility model can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the utility model, rather than all of the embodiments.

[0043] Reference Figures 1 to 6 As shown, this embodiment provides a bathroom heater, which includes a box body 1 and an air blowing duct 110 located in the box body 1.

[0044] The box body 1 has a first air inlet 121 and an air outlet 122 connected to the air blowing duct 110, and the air outlet 122 is extended along the length direction of the box body 1. Figure 1 , Figure 2 , Figure 3 and Figure 6 In the X direction.

[0045] Reference Figures 1 to 6 As shown, part of the duct wall of the blowing duct 110 extends obliquely toward the end of the blowing port 122 in the length direction, and forms a first angle with the length direction of the blowing port 122. A blowing wheel 3 for generating airflow is arranged in the blowing duct 110, and a second angle is formed between a line between a rotation center and an end of the blowing wheel 3 and the length direction of the blowing port 122, and the first angle is smaller than the second angle.

[0046] The length direction of the blowing port 122 specifically refers to the extension direction of the long side 1221 of the blowing port 122, for example, Figure 1 , Figure 2 , Figure 3 and Figure 6 That is to say, the straight line where the long side 1221 is located is consistent with the length direction of the box body 1. In specific implementation, the long side 1221 can also be consistent with the length direction of the box body 1. Figure 1 , Figure 2 , Figure 3 and Figure 6 The X direction forms a certain angle. Among them, the end of the blowing port 122 in the length direction can be Figure 3 The M shown indicates the location.

[0047] The first angle specifically refers to Figure 3The angle a between the partial duct wall of the middle blowing duct 110 and the straight line where the projections of the long side 1221 on the box body 1 are located. The line between the rotation center and the end of the blowing wheel 3 can be Figure 3 The second angle mentioned above specifically refers to Figure 3 The angle b between the middle L and the straight line where the projections of the long side 1221 on the box body 1 lie.

[0048] Specifically, the partial duct wall of the blowing duct 110 extending obliquely toward the end may be that the partial duct wall of the blowing duct 110 extends to the end, or there may be a preset distance between the partial duct wall of the blowing duct 110 and the end.

[0049] Exemplarily, the box body 1 can be connected to the top of the bathroom. For example, a first drive motor 1101 can be arranged in the blowing duct 110, and the output shaft of the first drive motor 1101 is connected to the blowing wheel 3 to provide power to the blowing wheel 3, so that the air continuously enters the blowing duct 110 from the first air inlet 121 under the drive of the blowing wheel 3, and flows out from the blowing port 122, forming an air flow circulation.

[0050] Reference Figures 1 to 6 As shown, the box body 1 can be made into a rectangular parallelepiped structure, and the blowing wheel 3 can be arranged Figure 1 , Figure 2 , Figure 3 and Figure 6 The X-direction side.

[0051] The bathroom heater provided in the present embodiment makes part of the duct wall of the blowing duct 110 extend obliquely toward the end in the length direction of the blowing port 122, and forms a first angle with the length direction of the blowing port 122, and makes a second angle formed between a line connecting the rotation center and the end of the blowing wheel 3 in the blowing duct 110 and the length direction of the blowing port 122, and the first angle is smaller than the second angle. Compared with the solution in which the first angle is too large, this can improve the aggregation of the airflow in the blowing duct 110 at part of the duct wall of the blowing duct 110 to a certain extent, and improve the wind gathering effect of the airflow at part of the duct wall of the blowing duct 110 to a certain extent, which is beneficial to improving the blowing efficiency and the blowing volume, so that the bathroom heater can meet the needs of users and improve the user experience.

[0052] When implementing it, refer to Figures 1 to 6As shown, the end of the blowing port 122 in the length direction can be located on the outside of the blowing wheel 3 in the X direction. For example, the blowing port 122 extends from the position corresponding to the blowing wheel 3 to the outside of the blowing wheel 3. In this way, the size of the blowing port 122 can be increased to a certain extent, thereby increasing the blowing area of ​​the bathroom heater and increasing the blowing air volume to a certain extent, meeting the needs of users. At the same time, when part of the duct wall of the blowing duct 110 extends obliquely toward the above-mentioned end, the size of the air outlet end of the blowing duct 110 can also be increased to a certain extent, so that the air flow area flowing out of the blowing duct 110 is increased to a certain extent, which is conducive to further ensuring the blowing air volume.

[0053] In some embodiments, reference Figure 1 , Figure 3 and Figure 6 As shown, the housing 1 has a guide extension wall 112. The guide extension wall 112 extends obliquely toward the end to form a partial duct wall of the above-mentioned blowing duct 110.

[0054] In this way, by setting the guiding extension wall 112, the size of the air outlet end of the blowing duct 110 is extended, the air outlet area and air volume at the blowing port 122 are increased, and the airflow flowing to the blowing port 122 can be well guided, thereby further increasing the air outlet volume at the blowing port 122, and the user experience is better.

[0055] Exemplarily, a guide extension piece may be provided in the housing 1 , and a side of the guide extension piece facing the blowing air duct 110 is formed as the guide extension wall 112 .

[0056] In some embodiments, reference Figure 1 , Figure 3 and Figure 5 As shown, the box body 1 also has a blowing surrounding wall 111 connected to the guide extension wall 112 and located on the outer peripheral side of the blowing impeller 3.

[0057] Exemplarily, the blowing surrounding wall 111 is disposed at least partially outside the blowing wheel 3 in the radial direction, and the blowing surrounding wall 111 has an opening 1111 for airflow to flow toward the blowing port 122 .

[0058] Exemplarily, a blowing shell can be set in the box body 1, and the inner shell wall of the blowing shell is formed as the above-mentioned blowing wall 111. Compared with the solution of directly opening a blowing air duct in the box body, this can reduce the molding difficulty of the box body 1 to a certain extent, which is conducive to improving production efficiency.

[0059] In some embodiments, reference Figure 1 , Figure 3 and Figure 6As shown, a guide member 113 is further provided between one end of the blowing wall 111 and the blowing port 122. The guide member 113 can guide and block part of the airflow flowing toward the blowing port 122, thereby improving the smoothness and efficiency of the airflow and ensuring the air volume flowing into the blowing port 122.

[0060] In a specific implementation, at least the guide extension, the blowing enclosure and the guide member 113 can jointly define the blowing duct 110. In a specific implementation, the three components can be integrally formed, thereby improving the structural strength between the three components, thereby ensuring the stability of the blowing duct 110 and facilitating subsequent assembly.

[0061] In specific implementation, air can enter the blowing wall 111 from the first air inlet 121 under the action of the blowing impeller 3, and part of the airflow flowing out from the opening 1111 of the blowing wall 111 can flow to the blowing port 122 under the action of the guide extension wall 112 and the guide member 113, thereby increasing the size of the blowing duct 110 and the blowing port 122 and ensuring the blowing air volume. At the same time, the setting of the blowing wall 111 also has a certain wind gathering effect, which is conducive to increasing the air volume and wind speed.

[0062] In some embodiments, reference Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the joint between the guide extension wall 112 and the blowing surrounding wall 111 has an arc segment 1121 , and the center of the arc segment 1121 is located outside the blowing duct 110 .

[0063] With such arrangement, on the one hand, the arc segment 1121 can guide the airflow passing through the guide extension wall 112 and the blowing enclosure wall 111 to a certain extent, further improving the smoothness of the airflow flow, ensuring the blowing air volume and blowing efficiency, and helping to reduce the noise generated by the airflow; on the other hand, it can also avoid the stress concentration phenomenon at the joint of the guide extension wall 112 and the blowing enclosure wall 111 to a certain extent, ensuring the structural strength of the guide extension wall 112 and the blowing enclosure wall 111, and helping to extend the service life of the bathroom heater.

[0064] In some embodiments, the radius corresponding to the arc segment 1121 is between 5% and 20% of the outer contour radius of the blowing wheel 3, which can further improve the guiding effect of the airflow, so that the airflow is smoother and more efficient when flowing through the junction of the blowing wall 111 and the guide extension wall 112. It can also make the pressure of the airflow passing through the arc segment 1121 lower, which is beneficial to reducing the airflow noise, thereby improving the user experience to a certain extent.

[0065] For example, the radius corresponding to the arc segment 1121 may be between 13% and 14% of the outer contour radius of the blowing wheel 3. For example, the radius corresponding to the arc segment 1121 may be 12 mm.

[0066] In some embodiments, reference Figure 3 and Figure 6 As shown, the first angle is between 10° and 30°.

[0067] Such an arrangement can, to a certain extent, avoid the situation where the first angle is too small and affects the guide effect and blowing efficiency. Moreover, compared with the situation where the above-mentioned angle is too large, it can, to a certain extent, improve the aggregation of the airflow in the blowing duct 110 at some duct walls of the blowing duct 110, further improve the wind gathering effect of the airflow at some duct walls of the blowing duct 110, and further improve the blowing efficiency and blowing volume.

[0068] In some embodiments, the air outlet area of ​​one end of the air blowing duct 110 communicating with the air blowing port 122 is larger than the air blowing area at the air blowing port 122 .

[0069] In this way, the air flow can flow from the larger opening to the smaller opening and out of the smaller opening (i.e., the blowing port), thereby increasing the wind speed at the blowing port 122 to a certain extent, so that the air flow out of the blowing port 122 can flow over a larger range in the bathroom, ensuring the blowing effect and blowing efficiency.

[0070] In some embodiments, reference Figures 1 to 6 As shown, the plane where the air outlet end of the blowing duct 110 is located intersects with the plane where the blowing port 122 is located, and the blowing port 122 and the blowing duct 110 are connected through a guide channel section 2 extending along the length direction of the blowing port 122.

[0071] In specific implementation, one end of the guide channel section 2 can be connected to the outlet end of the blowing duct 110, and the other end of the guide channel section 2 can be connected to the blowing port 122. The guide extension wall 112 can be located between the blowing wall 111 and one end of the guide channel section 2.

[0072] Exemplarily, the airflow at the air outlet end of the blowing duct 110 can flow to the bathroom through one end of the guiding channel segment 2, the inner cavity of the guiding channel segment 2, the other end of the guiding channel segment 2, and the blowing port 122.

[0073] In this way, the airflow can be effectively guided from the outlet end of the blowing duct 110 to the blowing port 122 through the guide channel section 2, thereby further improving the smoothness of the airflow when flowing to the blowing port 122 to a certain extent, thereby improving the air outlet efficiency. At the same time, by setting the guide channel section 2, the design of the bathroom heater can flexibly adjust the position of the blowing port 122 on the box body 1 according to the actual installation and use requirements, so as to meet the installation requirements and blowing direction requirements of the bathroom heater.

[0074] At the same time, when the above-mentioned guide channel section 2 is set and the first angle is made smaller than the second angle, this can to a certain extent avoid the situation where the first angle is too large, resulting in excessive wind speed, causing the airflow to flow into the guide channel section 2 and hit the inner wall of the guide channel section 2 and then turn back, thereby helping to ensure a larger air output and improve air output efficiency.

[0075] Exemplarily, the guide channel section 2 may include a PTC heater with a heating function, so that the bathroom heater can be used as a heater, or it may include a refrigerator with a cooling function, or the guide channel section 2 may only pass air.

[0076] In some embodiments, reference Figure 1 and Figure 6 As shown, at least part of the inner wall of the guide channel section 2 is an arc-shaped wall 21 that is recessed in a direction away from the center of the guide channel section 2 .

[0077] In this way, the guiding effect of the guiding channel section 2 on the airflow can be improved, thereby further ensuring the smoothness of the airflow and further increasing the blowing air volume.

[0078] In some embodiments, reference Figure 6 As shown, a spoiler 22 for at least disturbing the airflow entering into the guide channel section 2 is provided at one end of the guide channel section 2 close to the blowing air duct 110 .

[0079] This arrangement can improve the uniformity of the airflow entering the guide channel section 2 to a certain extent, thereby further increasing the airflow velocity, ensuring the air volume and reducing wind noise. In addition, this arrangement can also support one end of the guide channel section 2 to a certain extent, ensuring the stability of the guide channel section 2 and ensuring the normal flow of the airflow.

[0080] Exemplarily, the spoiler 22 may be a spoiler rib, and there may be at least two spoiler ribs extending along the length direction of the guide channel section 2 ( Figure 1 , Figure 2 , Figure 3 and Figure 6For example, the width of each spoiler rib can be between 1.5-2 mm, so as to achieve spoiler and support the guide channel section 2 while ensuring the air intake in the guide channel section 2.

[0081] In some embodiments, reference Figures 1 to 6 As shown, the wind passing area of ​​one end of the guide channel section 2 close to the blowing duct 110 is smaller than the wind passing area of ​​one end of the guide channel section 2 close to the blowing port 122 .

[0082] This arrangement allows the air flow to flow in from the larger opening and out from the smaller opening, thereby increasing the flow rate of the air flow out of the other end of the guide channel section 2 to a certain extent, which is beneficial to increasing the wind speed at the blowing port 122 and ensuring the blowing effect and efficiency.

[0083] For example, refer to Figure 6 As shown, the X-direction length dimension of the other end of the guide channel segment 2 can be made the same as the X-direction length dimension of the blowing port 122 , and the Z-direction height dimension of the other end of the guide channel segment 2 can be made greater than the width dimension of the blowing port 122 .

[0084] In some embodiments, reference Figures 1 to 3 As shown, the axial side of the blowing wheel 3 has a first wind wheel air inlet 31 connected to the first air inlet 121, and the side wall of the blowing wheel 3 has a first wind wheel air outlet 32 ​​connected to the first wind wheel air inlet 31. A first air gap 33 connected to the blowing port 122 is formed between the blowing surrounding wall 111 and the first wind wheel air outlet 32.

[0085] Exemplarily, air may flow from the first air inlet 121 , the first wind wheel air inlet 31 , the first wind wheel air outlet 32 ​​, and the first air gap 33 to the air outlet 122 under the centrifugal action of the blowing wheel 3 .

[0086] In some embodiments, reference Figure 3 and Figure 4 As shown, along the rotation direction of the blowing wheel 3, the first wind gap 33 gradually increases. Such a setting can improve the efficiency of the airflow flowing in the first wind gap 33 to a certain extent, thereby helping to improve the blowing efficiency and blowing air volume of the entire bathroom heater.

[0087] For example, the blowing wheel 3 can be Figure 3 Rotate in clockwise direction.

[0088] In some embodiments, reference Figure 3 and Figure 4 As shown, in two first air gaps 33 opposite to each other on the same diameter, the maximum value of the first air gap is between 3 and 4 times the minimum value of the first air gap.

[0089] For example, refer to Figure 4 As shown, for example, two first air gaps 33 (respectively N1 and N2) located on the same diameter are taken as an example, that is, N2 is between 3 and 4 times of N1.

[0090] Such a configuration can further improve the efficiency of the airflow flowing in the first wind gap 33 to a certain extent, thereby helping to improve the blowing efficiency and blowing air volume of the entire bathroom heater, so that the user experience is further enhanced.

[0091] In some embodiments, reference Figure 1 and Figure 2 As shown, a guide surface is formed on the inner wall of the first air inlet 121 and extends obliquely toward the inner cavity of the box body 1. The guide surface is used to guide at least part of the airflow at the first air inlet 121.

[0092] Such an arrangement can, to a certain extent, guide the air flowing into the blowing duct 110 through the first air inlet 121, thereby helping to increase the air intake volume and air intake efficiency in the blowing duct 110, thereby increasing the air intake volume to a certain extent and achieving rapid air intake; and this can also, to a certain extent, improve the smoothness of the airflow flow, thereby helping to reduce the airflow noise.

[0093] Exemplarily, at least part of the airflow at the first air inlet 121 may enter the box body 1 along the inner wall of the first air inlet 121 .

[0094] In some embodiments, reference Figure 1 and Figure 2 As shown, the inner diameter of the first air inlet 121 is smaller than the size of the first wind wheel air inlet 31 .

[0095] This arrangement allows as much air as possible in the bathroom to flow into the first wind wheel air inlet 31 through the inner wall of the first air inlet 121 under the action of the blower wheel 3, thereby ensuring the smoothness of the airflow in the first air inlet 121 and improving the efficiency of the airflow.

[0096] Among them, refer to Figure 2 As shown, the inner diameter of the first air inlet 121 refers to the inner diameter dimension of the guide surface close to the center side (P1) of the first air inlet 121, and the outer diameter of the first air inlet 121 refers to the inner diameter dimension of the guide surface away from the center side (P2) of the first air inlet 121.

[0097] In some embodiments, the outer diameter of the blowing wheel 3 is not less than the outer diameter of the first air inlet 121. This can ensure to a certain extent the smoothness of the airflow when it flows through the blowing wheel 3 at the first air gap 33 at the first blowing port 122, thereby ensuring the efficiency of the airflow.

[0098] In some embodiments, reference Figures 1 to 6 As shown, a ventilation duct 114 is also provided in the box body 1, and the blowing duct 110 and the ventilation duct 114 are arranged in the box body 1 at intervals along the length direction of the blowing port 122. A ventilation fan wheel 4 for generating airflow is provided in the ventilation duct 114; and the box body 1 has a ventilation port 115 and a second air inlet 123 both connected to the ventilation duct 114.

[0099] This setting can enrich and expand the working mode of the bathroom heater to a certain extent, so that the bathroom heater has both blowing function and ventilation function, and improves the user experience of the bathroom heater.

[0100] For example, a second driving motor 1141 for driving the ventilation impeller 4 to rotate can be provided in the ventilation duct 114. Under the action of the ventilation impeller 4, the air in the bathroom can flow out from the second air inlet 123 and the ventilation duct 114 through the ventilation port 115 to the outside of the bathroom, thereby achieving ventilation in the bathroom. In specific implementation, the blowing impeller 3 and the ventilation impeller 4 can work simultaneously or separately, so that the bathroom heater can work in different modes.

[0101] In specific implementation, the dimensions of the blowing duct 110 and the ventilation duct 114 in the thickness direction of the box body 1 can be controlled within 70 mm, and the total thickness of the box body 1 can be controlled within 75 mm, so that the bathroom heater can be adapted to more installation environments, such as being installed in bathrooms with a smaller ceiling space height, thereby improving the applicability of the bathroom heater.

[0102] In some embodiments, reference Figure 3 and Figure 6 As shown, part of the duct wall of the blowing duct 110 (i.e., the guide extension wall 112) extends to the channel wall of the ventilation duct 114, so that part of the blowing outlet 122 and part of the duct wall of the blowing duct 110 correspond to the ventilation duct 114 in the length direction of the blowing outlet 122.

[0103] That is, the air blowing port 122 and a portion of the air duct wall of the air blowing duct 110 (ie, the guide extension wall 112 ) extend to the ventilation duct 114 .

[0104] This arrangement makes rational use of the space of the box body 1 itself, so as to extend and increase the size of the air outlet end of the air duct 110 and the size of the air outlet 122 to a certain extent without basically changing the outer contour size of the bathroom heater and the installation space of the bathroom heater, thereby increasing the blowing area and the blowing air volume.

[0105] In some embodiments, reference Figures 3 to 6 As shown, the inner wall of the ventilation port 115 is staggered with the outlet end of the ventilation duct 114 , and a guide member 5 is provided between the ventilation duct 114 and the ventilation port 115 for guiding the airflow at the outlet end of the ventilation duct 114 to the ventilation port 115 .

[0106] With such arrangement, the guide member 5 can improve the smoothness of the airflow in the ventilation duct 114 when flowing to the ventilation port 115 to a certain extent, thereby improving the ventilation efficiency.

[0107] In some embodiments, reference Figures 3 to 6 As shown, the guide member 5 is disposed at the ventilation port 115 , and is obliquely extended from the duct wall of the ventilation duct 114 toward the ventilation port 115 .

[0108] In this way, the guiding effect of the airflow flowing to the ventilation port 115 can be further improved, thereby ensuring the amount of air flowing out of the ventilation port 115, and further facilitating the improvement of ventilation efficiency.

[0109] Exemplarily, the guide member 5 may be a guide rib, a guide block, or the like.

[0110] In some embodiments, reference Figure 1 and Figure 3 As shown, the ventilation wheel 4 has a second wind wheel air inlet 41 on one axial side corresponding to the second air inlet 123, and a second wind wheel air outlet 42 on the side wall of the ventilation wheel 4 is connected to the blowing air duct 110. The channel wall of the partial ventilation air duct 114 is arranged on the radial outer side of the ventilation wheel 4, and a second air gap 43 connected to the ventilation port 115 is formed between the second wind wheel air outlet 42 and the channel wall of the partial ventilation air duct 114.

[0111] Exemplarily, under the centrifugal action of the ventilation impeller 4, air can flow from the second air inlet 123, the second impeller air inlet 41, the second impeller air outlet 42, the second air gap 43 and another part of the blowing duct 110 to the ventilation port 115 to achieve ventilation in the bathroom.

[0112] In some embodiments, reference Figure 3 , Figure 5 and Figure 6As shown, the ventilation port 115 is located on one radial side of the ventilation wheel 4, and in the axial direction of the ventilation wheel 4, the size of the second wind wheel air outlet 42 is matched with the size of the ventilation port 115, and the center of the second wind wheel air outlet 42 is flush with the center of the ventilation port 115. Figure 1 , Figure 5 and Figure 6 In the Z direction.

[0113] Such an arrangement can improve the smoothness and convenience of the airflow from the second wind wheel outlet to the ventilation port 115 to a certain extent, which is conducive to achieving rapid ventilation.

[0114] In some embodiments, reference Figure 3 As shown, in the length direction of the box body 1, the end is located on the side of the rotation center of the ventilation wheel 4 facing the blowing wheel 3. The rotation center of the ventilation wheel 4 is O, that is, M is located between O and the blowing wheel 3.

[0115] This arrangement can increase the air outlet area of ​​the blowing port 122 while also avoiding to a certain extent the situation where the size of the blowing port 122 and the outlet end of the blowing duct 110 is too large and affects the size of the ventilation duct 114, thereby helping to ensure the ventilation volume and ventilation efficiency.

[0116] Reference Figure 1 As shown, at least one of the first air inlet 121 and the second air inlet 123 is also provided with an isolation support 9, and the isolation support 9 has a wind pass area, so that while ensuring normal air intake, at least one of the first air inlet 121 and the second air inlet 123 can be shielded and protected to a certain extent, so as to prevent debris from accidentally being mixed or entering at least one of the corresponding blowing air duct 110 and ventilation air duct 114 to a certain extent, ensuring the normal operation of the bathroom heater. At the same time, the isolation support 9 can also disturb the airflow to a certain extent to achieve uniform air intake; and it can also support at least one of the first air inlet 121 and the second air inlet 123 to ensure its stability and ensure normal air intake.

[0117] In some embodiments, reference Figure 1 As shown, the inner cavity of the box body 1 is also connected with a controller 6, which can be electrically connected to the blowing impeller 3 and the exhaust impeller to control their working states. Of course, the above-mentioned PTC heater or refrigerator can also be electrically connected to the controller 6.

[0118] For example, refer to Figures 1 to 6As shown, the box body 1 may include a hollow box body 11 and a cover body 12 detachably covered on the box body 11. At least the blowing air duct 110 is located in the box body 11, and the first air inlet 121 and the blowing port 122 may both be located on the cover body 12.

[0119] In some embodiments, reference Figure 1 As shown, the box body 11 is also provided with at least a wiring terminal 7 for electrical connection with the mains and the controller 6, the wiring terminal 7 has a wiring port for wiring, and the cover 12 has a notch 124 for exposing the wiring port at the position corresponding to the wiring port. This can avoid the need to flip the box body 11 during the wiring process of the controller 6 and the wiring terminal 7 to a certain extent, thereby improving the convenience of wiring the controller 6 and the wiring port, and further improving the convenience of installing the bathroom heater.

[0120] For example, after the wiring is completed, the connection between the wiring terminal 7 and the mains power etc. can be compressed by the wire clamp 8 .

[0121] Reference Figure 1 and Figure 2 As shown, a wiring cover 10 is also provided at the notch 124, and the wiring cover 10 is used to cover at least part of the notch 124 to improve the appearance of the bathroom heater. The wiring cover 10 can be connected to at least one of the box body 11 and the cover body 12.

[0122] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0123] The above description is only a specific implementation of the embodiment of the utility model, so that those skilled in the art can understand or implement the embodiment of the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiment of the utility model. Therefore, the embodiment of the utility model will not be limited to these embodiments described herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A bathroom heater, characterized in that: It comprises a box body and an air blowing duct located in the box body; The box body is provided with a first air inlet and an air outlet which are connected with the air blowing duct, and the air outlet is extended along the length direction of the box body; Part of the duct wall of the blowing duct extends obliquely toward the end portion in the length direction of the blowing port, and forms a first angle with the length direction of the blowing port; a blowing wheel for generating airflow is arranged in the blowing duct, and a line between a rotation center of the blowing wheel and the end portion forms a second angle with the length direction of the blowing port, and the first angle is smaller than the second angle.

2. The bathroom heater according to claim 1, characterized in that: The box body is provided with a guide extension wall; The guide extension wall extends obliquely toward the end portion to form a partial duct wall of the blowing duct.

3. The bathroom heater according to claim 2, characterized in that: The box body also has a blowing wall connected to the guide extension wall and located on the outer peripheral side of the blowing wheel; The joint between the guide extension wall and the air blowing surrounding wall has an arc segment, and the center of the arc segment is located outside the air blowing duct; The radius corresponding to the arc segment is between 5% and 20% of the outer contour radius of the blowing wheel.

4. The bathroom heater according to claim 1, characterized in that: The first angle is between 10° and 30°.

5. The bathroom heater according to claim 1, characterized in that: The air outlet area of ​​one end of the air blowing duct connected to the air blowing port is larger than the air blowing area at the air blowing port.

6. The bathroom heater according to claim 1, characterized in that: The plane where the air outlet end of the blowing duct is located intersects with the plane where the blowing port is located, and the blowing port and the blowing duct are connected through a guide channel section extending along the length direction of the blowing port; At least part of the inner channel wall of the guide channel section is an arc-shaped wall that is recessed in a direction away from the center of the guide channel section; and / or, one end of the guide channel section close to the blowing duct is provided with a spoiler that is at least used to disrupt the airflow entering the guide channel section; and / or, the wind flow area of ​​one end of the guide channel section close to the blowing duct is smaller than the wind flow area of ​​one end of the guide channel section close to the blowing port.

7. The bathroom heater according to claim 1, characterized in that: The blowing wheel has a first wind wheel air inlet connected to the first wind inlet on one axial side thereof, and a first wind wheel air outlet connected to the first wind wheel air inlet on a side wall thereof; The box body also has an air blowing wall, which is arranged around at least part of the outer side of the air blowing wheel in the radial direction, and forms a first air gap between the air blowing wall and the air outlet of the first wind wheel to communicate with the air blowing outlet; The first air gap gradually increases along the rotation direction of the blowing wheel.

8. The bathroom heater according to claim 7, characterized in that: In two first air flow gaps that are opposite to each other and located on the same diameter, the maximum value of the first air flow gap is between 3 and 4 times the minimum value of the first air flow gap.

9. The bathroom heater according to claim 7, characterized in that: A guide surface is formed on the inner wall of the first air inlet and extends obliquely toward the inner cavity of the box body; the guide surface is used to guide at least part of the airflow at the first air inlet; The inner diameter of the first air inlet is smaller than the size of the first wind wheel air inlet; and / or the outer diameter of the blowing wind wheel is not smaller than the outer diameter of the first air inlet.

10. The bathroom heater according to any one of claims 1 to 9, characterized in that: A ventilation duct is also provided in the box body, and the blowing duct and the ventilation duct are arranged in the box body at intervals along the length direction of the blowing port; The ventilation duct is provided with a ventilation wheel for generating airflow; the box body is provided with a ventilation port and a second air inlet both of which are connected to the ventilation duct; Part of the duct wall of the blowing duct extends to the channel wall of the ventilation duct, so that part of the blowing port and part of the duct wall of the blowing duct correspond to the ventilation duct in the length direction of the blowing port.

11. The bathroom heater according to claim 10, characterized in that: The inner wall of the ventilation port is staggered with the outlet end of the ventilation duct, and a guide member for guiding the airflow at the outlet end of the ventilation duct to the ventilation port is provided between the ventilation duct and the ventilation port; The guide member is disposed at the ventilation port, and is obliquely extended from the duct wall of the ventilation duct toward the ventilation port.

12. The bathroom heater according to claim 10, characterized in that: The ventilation wind wheel has a second wind wheel air inlet on one axial side thereof and is connected to the second air inlet; the ventilation wind wheel has a second wind wheel air outlet on the side wall thereof and is connected to the blowing air duct; The channel wall of the partial ventilation duct is arranged on the radial outer side of the ventilation wind wheel, and a second air gap communicating with the ventilation port is formed between the second wind wheel air outlet and the channel wall of the partial ventilation duct.

13. The bathroom heater according to claim 12, characterized in that: The ventilation port is located on one radial side of the ventilation wheel, and in the axial direction of the ventilation wheel, the size of the second wind wheel air outlet is matched with the size of the ventilation port, and the center of the second wind wheel air outlet is flush with the center of the ventilation port.

14. The bathroom heater according to claim 10, characterized in that: In the length direction of the box body, the end portion is located on a side of the rotation center of the ventilation impeller facing the blowing impeller.

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