Case structure and air heating bath heater applying same

Abstract

The utility model discloses a machine case structure and an air heating bath heater using the same. The machine case structure comprises a shell, a volute assembly and a centrifugal wind wheel. A plurality of blades are arranged on the centrifugal wind wheel in a circular array mode, the blades comprise first wind guide fins and second wind guide fins, the first wind guide fins bend and extend in the first direction, the second wind guide fins bend and extend in the second direction, and the bending directions of the first wind guide fins and the second wind guide fins are opposite. When the centrifugal wind wheel rotates in different clock directions, the first wind guide fins and the second wind guide fins guide airflow to blow in the opposite directions in a rotating mode. According to the utility model, only one centrifugal wind wheel needs to be arranged for heat exchange and air exchange, and compared with the existing heat exchange and air exchange functions independently corresponding to two groups of wind wheel motors in the market, the structure is simplified, the size of the product is reduced, the installation space requirement of the product is simplified, and the production cost of the product is reduced.

Description

Technical Field

[0001] The utility model relates to a chassis structure and an air-heating bathroom heater using the same. Background Art

[0002] An air-heated bathroom heater is an air supply device used for indoor heat exchange, heating and ventilation. Currently, the existing air-heated bathroom heaters use two sets of fan wheels and motors to correspond to the heat exchange and ventilation functions respectively. The common layout is: the two sets of fan wheels and motors are arranged side by side horizontally inside the chassis of the air-heated bathroom heater. This also leads to the product being too large in size, with installation space limitations and high costs. Utility Model Content

[0003] According to one aspect of the utility model, in order to overcome the defects of the prior art, a chassis structure is provided, which includes: a housing, a volute assembly and a centrifugal impeller;

[0004] Wherein, the volute assembly is arranged in the housing;

[0005] The volute assembly is provided with an air inlet port, a heat exchange air outlet port, an air exchange air outlet port and an installation chamber for accommodating and installing a centrifugal wind wheel. The housing is arranged in the installation chamber, and the air suction port of the centrifugal wind wheel is matched with the air inlet port.

[0006] A heat exchange duct and an air exchange duct are provided in the volute assembly, and the heat exchange duct and the air exchange duct are respectively arranged on both sides of the centrifugal wind wheel, the heat exchange duct extends from the first side of the centrifugal wind wheel to the heat exchange air outlet port, and the air exchange duct extends from the second side of the centrifugal wind wheel to the air exchange air outlet port;

[0007] A plurality of blades are arranged in a circular row on the centrifugal wind wheel, and the blades include a first air guide fin and a second air guide fin. The first air guide fin is bent and extended in a first direction, and the second air guide fin is bent and extended in a second direction. The bending directions of the first air guide fin and the second air guide fin are opposite, so that when the centrifugal wind wheel rotates in different clockwise directions, the first air guide fin and the second air guide fin respectively guide the airflow to rotate in opposite directions.

[0008] During operation, when it is necessary to switch to the heat exchange mode, the centrifugal fan wheel is controlled to rotate in the clockwise direction, and the centrifugal fan wheel throws the airflow out in the centrifugal direction. Since the first air guide fin is arranged to be smoothly bent in the clockwise direction, the first air guide fin guides the airflow to blow in the clockwise direction. Since the heat exchange air duct is on the left side of the centrifugal fan wheel, the airflow blowing in the clockwise direction is gathered to one side of the heat exchange air duct, thereby exchanging heat with the heat exchange device on the heat exchange air outlet port and then being blown to the room to achieve the effect of heat exchange; when it is necessary to switch to the ventilation mode, the centrifugal fan wheel is controlled to rotate in the counterclockwise direction, and the centrifugal fan wheel throws the airflow out in the centrifugal direction. The wind fins are arranged to be smoothly curved along the counterclockwise direction, and the second wind guide fins guide the airflow to rotate in the counterclockwise direction. Since the heat exchange air duct is on the right side of the centrifugal wind wheel, the airflow rotating in the counterclockwise direction is gathered on one side of the air exchange air duct, and then blown to the outdoors through the air exchange outlet port and the connected pipes, thereby achieving the effect of ventilation. The utility model only needs to set up one centrifugal wind wheel for both heat exchange and ventilation. Compared with the existing two sets of wind wheel motors on the market that separately correspond to the heat exchange and ventilation functions, the utility model simplifies the structure, reduces the product volume, simplifies the product installation space requirements, and reduces the product production cost.

[0009] In some embodiments, the first air guide fin and the second air guide fin are arranged to be centrally symmetrical.

[0010] In some embodiments, the blades are "S" shaped, the first wind guide fins are arranged close to the outside of the centrifugal wind wheel, and the second wind guide fins are arranged close to the inside of the center of the centrifugal wind wheel.

[0011] In some embodiments, the first direction is set to a clockwise rotation direction, and the first air guide fin is set to be smoothly bent along the clockwise rotation direction; the second direction is set to a counterclockwise rotation direction, and the second air guide fin is set to be smoothly bent along the counterclockwise rotation direction, and the first air guide fin is smoothly connected to the second air guide fin.

[0012] In some embodiments, a cover plate is further included, which is detachably disposed on the shell. The cover plate is provided with a through opening that is aligned and fits with the air inlet port of the volute assembly. The cover plate and the shell together enclose and accommodate the volute assembly.

[0013] In some embodiments, the heat exchange air outlet port is formed as a heating element installation groove; a PTC heating element is arranged in the heating element installation groove, and an anti-scalding grille cover is also arranged on the heating element installation groove.

[0014] In some embodiments, the distance from the heat exchange air outlet port to the bottom of the volute assembly is 250 mm-290 mm, and the diameter of the centrifugal wind wheel is 144 mm-174 mm.

[0015] In some embodiments, a motor is further included, the motor is drivingly connected to the centrifugal wind wheel, the speed of the motor is set to 1320rpm, the length of the centrifugal wind wheel blade is 145mm, the thickness is 15mm, the height is 72mm, the number of PTC sheets of the PTC heating element is 4 layers, each layer of PTC sheets is 24 sheets, and the pitch between two adjacent PTC sheets is 3mm. Compared with existing products on the market, the utility model can generate greater heat exchange efficiency and air outlet effect under the premise of the same motor driving power by reasonably configuring various key size parameters.

[0016] According to another aspect of the utility model, there is also provided an air-heated bathroom heater, which includes an electric control module, a panel and a chassis structure; wherein the electric control module is configured to control the rotation direction of the centrifugal wind wheel; an air guide port for connecting with the heat exchange air outlet port is opened on the panel.

[0017] During operation, when it is necessary to switch to the heat exchange mode, the electronic control module controls the centrifugal wind wheel to rotate in the clockwise direction, and the centrifugal wind wheel throws the airflow out in the centrifugal direction. Since the first air guide fin is arranged to be smoothly bent in the clockwise direction, the first air guide fin guides the airflow to blow in the clockwise direction. Since the heat exchange air duct is on the left side of the centrifugal wind wheel, the airflow blowing in the clockwise direction is gathered to one side of the heat exchange air duct, thereby exchanging heat with the heat exchange device on the heat exchange air outlet port and then being blown to the room from the air guide port of the panel to achieve the effect of heat exchange; when it is necessary to switch to the ventilation mode, the electronic control module controls the centrifugal wind wheel to rotate in the counterclockwise direction, and the centrifugal wind wheel throws the air out in the centrifugal direction. The flow is thrown out in the centrifugal direction. Since the second air guide fin is smoothly bent along the counterclockwise direction, the second air guide fin guides the airflow to blow in the counterclockwise direction. Since the heat exchange air duct is on the right side of the centrifugal wind wheel, the airflow blowing in the counterclockwise direction is gathered on one side of the air exchange air duct, and then blown to the outdoors through the air exchange air outlet port and the connected pipes, so as to achieve the effect of ventilation. The utility model only needs to set up one centrifugal wind wheel for both heat exchange and ventilation. Compared with the existing two sets of wind wheel motors on the market that separately correspond to the heat exchange and ventilation functions, the utility model simplifies the structure, reduces the product volume, and reduces the product production cost.

[0018] In some embodiments, a lighting panel is also provided on the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a chassis structure according to an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of a centrifugal wind wheel of the chassis structure shown;

[0021] Figure 3 for Figure 1 The schematic diagram of the chassis structure shown is after the cover plate is installed;

[0022] Figure 4 for Figure 3 Schematic diagram of the decomposition state;

[0023] Figure 5 For installation Figure 1 The schematic diagram of the air-heated bathroom heater with the chassis structure shown;

[0024] Figure 6 for Figure 5 Schematic diagram of the decomposition state.

[0025] The meanings of the reference numerals are as follows:

[0026] 1. Shell; 2. Volute assembly; 21. Heat exchange air outlet port; 22. Air exchange air outlet port; 23. Heat exchange air duct; 24. Air exchange air duct; 3. Centrifugal wind wheel; 31. Blades; 311. First air guide fins; 312. Second air guide fins; 4. Cover plate; 41. Through port; 5. Panel; 51. Air guide port. DETAILED DESCRIPTION

[0027] For better understanding and implementation, 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.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include" and "comprise" include not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such processes, methods, articles or equipment. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or equipment that includes the elements. The terms used in this article are generally commonly used terms by those skilled in the art. If they are inconsistent with commonly used terms, the terms in this article shall prevail.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0032] Embodiment 1

[0033] Figure 1-4 The chassis structure of an embodiment of the utility model is schematically shown, as shown in FIG. Figure 1-4 As shown, the chassis structure includes a shell 1, a volute assembly 2 and a centrifugal wind wheel 3; wherein the volute assembly 2 is arranged in the shell 1; the volute assembly 2 is provided with an air inlet port, a heat exchange air outlet port 21, an air exchange air outlet port 22 and an installation chamber for accommodating and installing the centrifugal wind wheel 3. When the centrifugal wind wheel 3 is working, it inhales the outside air from the air inlet port and then centrifugally dissipates and blows it out. The air exchange air outlet port 22 is connected to the outside through a pipeline. The shell 1 is arranged in the installation chamber, and the air suction port of the centrifugal wind wheel 3 is matched with the air inlet port; a heat exchange air duct 23 and an air exchange air duct 24 are provided in the volute assembly 2, and the heat exchange air duct 23 and the air exchange air duct 24 are respectively arranged on the left and right sides of the centrifugal wind wheel 3. The heat exchange duct 23 extends from the first side of the centrifugal wind wheel 3 to the heat exchange air outlet port 21, and the air exchange duct 24 extends from the second side of the centrifugal wind wheel 3 to the air exchange air outlet port 22; a plurality of blades 31 are arranged in a circular row on the centrifugal wind wheel 3, and the blades 31 include a first air guide fin 311 and a second air guide fin 312, the first air guide fin 311 is bent and extended in a first direction, and the second air guide fin 312 is bent and extended in a second direction, and the bending directions of the first air guide fin 311 and the second air guide fin 312 are opposite, so that when the centrifugal wind wheel 3 rotates in different clockwise directions, the first air guide fin 311 and the second air guide fin 312 respectively guide the airflow to rotate in opposite directions. In this embodiment, the first direction is set to a clockwise rotation direction, and the first air guide fin 311 is set to be smoothly bent along the clockwise rotation direction; the second direction is set to a counterclockwise rotation direction, and the second air guide fin 312 is set to be smoothly bent along the counterclockwise rotation direction, and the first air guide fin 311 is smoothly connected to the second air guide fin 312.

[0034] During operation, when it is necessary to switch to the heat exchange mode, the centrifugal wind wheel 3 is controlled to rotate in the clockwise direction, and the centrifugal wind wheel 3 throws the airflow out in the centrifugal direction. Since the first air guide fin 311 is set to be smoothly bent in the clockwise direction, the first air guide fin 311 guides the airflow to blow in the clockwise direction. Since the heat exchange air duct 23 is on the left side of the centrifugal wind wheel 3, the airflow blowing in the clockwise direction is gathered to one side of the heat exchange air duct 23, thereby exchanging heat with the heat exchange device on the heat exchange air outlet port 21 and then being blown into the room to achieve the effect of heat exchange; when it is necessary to switch to the ventilation mode, the centrifugal wind wheel 3 is controlled to rotate in the counterclockwise direction, and the centrifugal wind wheel 3 throws the airflow out in the centrifugal direction. The air guide fins 312 are smoothly curved in a counterclockwise direction, and the second air guide fins 312 guide the airflow to blow in a counterclockwise direction. Since the heat exchange air duct 23 is on the right side of the centrifugal wind wheel 3, the airflow blowing in a counterclockwise direction is gathered on one side of the air exchange air duct 24, and then blown to the outdoors through the air exchange outlet port 22 and the connected pipes, thereby achieving the effect of ventilation. The utility model only needs to set up one centrifugal wind wheel 3 for both heat exchange and ventilation. Compared with the existing two sets of wind wheel motors on the market that separately correspond to the heat exchange and ventilation functions, the utility model simplifies the structure, reduces the product volume, simplifies the product installation space requirements, and reduces the product production cost.

[0035] In addition, the centrifugal wind wheel of the utility model has the same stable working air volume in both heat exchange and ventilation working modes when it rotates forward and reverse; while the air volume of the existing single wind wheel on the market in the ventilation working mode is significantly smaller than the air volume in the heat exchange working mode. Compared with the existing single wind wheel on the market, the centrifugal wind wheel of the utility model is more balanced and stable when switching working modes.

[0036] In detail, in this embodiment, the first air guide fin 311 and the second air guide fin 312 are arranged to be centrally symmetrical.

[0037] In this embodiment, the blade 31 is “S”-shaped, the first wind guide fin 311 is arranged close to the outer side of the centrifugal wind wheel 3 , and the second wind guide fin 312 is arranged close to the inner side of the center of the centrifugal wind wheel 3 .

[0038] In further detail, in this embodiment, a cover plate 4 is also included, which is detachably arranged on the shell 1. The cover plate 4 is provided with a through opening 41 which is aligned and fits with the air inlet port of the volute assembly 2. The cover plate 4 and the shell 1 together enclose and accommodate the volute assembly 2.

[0039] In further detail, in the present embodiment, the heat exchange air outlet port 21 is formed as a heating element installation groove; a PTC heating element is arranged in the heating element installation groove, and an anti-scalding grille cover is also arranged on the heating element installation groove.

[0040] In this embodiment, the distance from the heat exchange air outlet port 21 to the bottom of the volute assembly 2 is 250 mm-290 mm, and the diameter of the centrifugal wind wheel 3 is 144 mm-174 mm.

[0041] In further detail, in the present embodiment, a motor is also included, which is drivingly connected to the centrifugal wind wheel 3. The speed of the motor is set to 1320 rpm. The length of the blade 31 of the centrifugal wind wheel 3 is 145 mm (the dimension along the axial direction of the centrifugal wind wheel 3), the thickness is 15 mm (the thickness of the blade 31), and the height is 72 mm (the dimension along the radial direction of the centrifugal wind wheel 3). The number of PTC sheets of the PTC heating element is 4 layers, each layer has 24 PTC sheets, and the tooth pitch between two adjacent PTC sheets is 3 mm.

[0042] The following table shows the effects of three different sets of parameters:

[0043]

[0044] It can be seen from the above table that: when comparing Scheme A with Scheme B, under the conditions of constant speed and tooth pitch, the air volume of Scheme A becomes smaller; when comparing Scheme B with Scheme C, under the conditions of constant speed and tooth pitch, the air volume of Scheme C becomes smaller, and it is concluded that Scheme B has the best air volume.

[0045] The power of Scheme A and Scheme B is compared, and the power of Scheme B meets the design requirements. The power of Scheme B and Scheme C is compared, and the power of Scheme C meets the design requirements. It is concluded that both Scheme B and Scheme C meet the design requirements. The blade length of Scheme B and Scheme C is compared, and the blade length of Scheme C is longer than that of Scheme B. Therefore, the cost of Scheme B is lower than that of Scheme C, and it is concluded that Scheme B has the best cost. Compared with existing products on the market, the utility model can generate greater heat exchange efficiency and air outlet effect under the premise of the same motor drive power by reasonably configuring various key size parameters.

[0046] In further detail, the heat exchange air outlet port 21 is provided with an arc-shaped guide area for guiding the airflow to blow outward. The length of the heat exchange air outlet port 21 is 181 mm, the length of the PTC heating element is 145 mm, and the arc-shaped guide area extends adaptively within the space after deducting the length of the PTC heating element from the length of the heat exchange air outlet port.

[0047] Embodiment 2

[0048] like Figure 1-6As shown, according to another aspect of the utility model, a wind-heated bathroom heater is also provided, which includes an electric control module, a panel 5 and a chassis structure; wherein the electric control module is configured to control the rotation direction of the centrifugal wind wheel 3; and an air guide port 51 for connecting with the heat exchange air outlet port 21 is provided on the panel 5. During operation, when it is necessary to switch to the heat exchange mode, the electric control module controls the centrifugal wind wheel 3 to rotate in a clockwise direction, and the centrifugal wind wheel 3 throws the airflow out in a centrifugal direction. Since the first air guide fin 311 is configured to be smoothly bent in a clockwise direction, the first air guide fin 311 guides the airflow to blow in a clockwise direction. Since the heat exchange air duct 23 is on the left side of the centrifugal wind wheel 3, the airflow blowing in a clockwise direction is gathered to one side of the heat exchange air duct 23, so as to exchange heat with the heat exchange device on the heat exchange air outlet port 21 and then be blown to the room from the air guide port 51 of the panel 5 to achieve the effect of heat exchange; when it is necessary to switch to the ventilation mode, the electric control module controls the centrifugal wind wheel 3 to rotate in a counterclockwise direction, and the centrifugal wind wheel 3 throws the airflow out in the centrifugal direction. Since the second air guide fins 312 are smoothly bent in the counterclockwise direction, the second air guide fins 312 guide the airflow to blow in the counterclockwise direction. Since the heat exchange air duct 23 is on the right side of the centrifugal wind wheel 3, the airflow blowing in the counterclockwise direction is gathered to one side of the air exchange air duct 24, and then blown to the outdoors through the air exchange air outlet port 22 and the connected pipes, thereby achieving the effect of ventilation. The utility model only needs to set up one centrifugal wind wheel 3 for both heat exchange and ventilation. Compared with the existing two sets of wind wheel motors on the market that separately correspond to the heat exchange and ventilation functions, the utility model simplifies the structure, reduces the product volume, and reduces the product production cost.

[0049] In this embodiment, a lighting panel is also provided on the panel 5 for providing lighting effect.

[0050] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. Chassis structure, characterized in that: It includes a casing, a volute assembly and a centrifugal impeller; Wherein, the volute assembly is arranged in the housing; The volute assembly is provided with an air inlet port, a heat exchange air outlet port, an air exchange air outlet port, and an installation chamber for accommodating and installing the centrifugal wind wheel. The housing is arranged in the installation chamber, and the air suction port of the centrifugal wind wheel is matched with the air inlet port. A heat exchange duct and an air exchange duct are provided in the volute assembly, and the heat exchange duct and the air exchange duct are respectively arranged on both sides of the centrifugal wind wheel, the heat exchange duct extends from the first side of the centrifugal wind wheel to the heat exchange air outlet port, and the air exchange duct extends from the second side of the centrifugal wind wheel to the air exchange air outlet port; The centrifugal wind wheel has a plurality of blades arranged in a circular row, the blades comprising a first wind guide fin and a second wind guide fin, the first wind guide fin is bent and extended in a first direction, the second wind guide fin is bent and extended in a second direction, the bending directions of the first wind guide fin and the second wind guide fin are opposite, so that when the centrifugal wind wheel rotates in different clockwise directions, the first wind guide fin and the second wind guide fin respectively guide the airflow to rotate in opposite directions.

2. The chassis structure according to claim 1, characterized in that: The first air guide fin and the second air guide fin are arranged to be centrally symmetrical.

3. The chassis structure according to claim 2, characterized in that: The blade is in an "S" shape, the first wind guide fin is arranged close to the outer side of the centrifugal wind wheel, and the second wind guide fin is arranged close to the inner side of the center of the centrifugal wind wheel.

4. The chassis structure according to claim 3, characterized in that: The first direction is set to a clockwise rotation direction, and the first air guide fin is set to be smoothly bent along the clockwise rotation direction; the second direction is set to a counterclockwise rotation direction, and the second air guide fin is set to be smoothly bent along the counterclockwise rotation direction, and the first air guide fin is smoothly connected to the second air guide fin.

5. The chassis structure according to claim 1, characterized in that: It also includes a cover plate, which is detachably arranged on the shell, and a through opening is opened on the cover plate to be aligned and fitted with the air inlet port of the volute assembly. The cover plate and the shell together enclose and accommodate the volute assembly.

6. The chassis structure according to claim 1, characterized in that: The heat exchange air outlet port is formed as a heating element installation groove; a PTC heating element is arranged in the heating element installation groove, and an anti-scalding grille cover is also arranged on the heating element installation groove.

7. The chassis structure according to claim 6, characterized in that: The distance from the heat exchange air outlet port to the bottom of the volute assembly is 250mm-290mm, and the diameter of the centrifugal wind wheel is 144mm-174mm.

8. The chassis structure according to claim 7, characterized in that: It also includes a motor, which is drivingly connected to the centrifugal wind wheel. The speed of the motor is set to 1320rpm. The length of the blade of the centrifugal wind wheel is 145mm, the thickness is 15mm, and the height is 72mm. The PTC heating element has 4 layers of PTC sheets, each layer has 24 PTC sheets, and the tooth pitch between two adjacent PTC sheets is 3mm.

9. The chassis structure according to claim 6, characterized in that: The heat exchange air outlet port is provided with an arc-shaped guide area for guiding the air flow to blow outwards. The length of the heat exchange air outlet port is 181 mm, and the length of the PTC heating element is 145 mm.

10. Air-heated bathroom heater, characterized in that: It comprises an electric control module, a panel and a chassis structure as described in any one of claims 1 to 9; Wherein, the electric control module is configured to control the rotation direction of the centrifugal wind wheel; The panel is provided with an air guide port for connecting with the heat exchange air outlet port.

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