Bath heater with high and low rotating speeds of motor

Abstract

The bath heater comprises a machine box and a panel, an air exchange opening is formed in the machine box, an air inlet and an air outlet are formed in the panel, an air exchange assembly connected with the air exchange opening and the air inlet and an air outlet assembly connected with the air outlet and the air inlet are arranged in the machine box, and the air outlet is connected with the air outlet assembly through a heater. The air exchange assembly comprises a first air cavity arranged in the case, the first air cavity is communicated with the air inlet and is communicated with the air exchange port through an air exchange channel, a first air wheel is arranged in the first air cavity and is driven by a speed regulating motor to rotate, and a temperature control switch with a normally open contact is connected between a high-speed tap and a low-speed tap of the speed regulating motor; according to the utility model, the wind speed can be adjusted in real time, the structure is simple, the cost is low, and the popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom heaters, in particular to a bathroom heater with high and low rotation speeds of a motor. Background Art

[0002] In normal use, multifunctional air-heated bathroom heaters often use speed-regulating motors for better use effects and experience. For example, in ordinary dual-motor air-heated bathroom heaters, one motor is usually responsible for blowing and heating air, and the other motor is responsible for ventilation; due to the usage habits of many consumers, they will turn on ventilation while heating to reduce bathroom fog and replenish bathroom oxygen to relieve stuffiness; in this working state, if the ventilation motor runs at high speed, the hot air in the bathroom will be quickly discharged, the bathroom temperature will drop rapidly, and the bather's body temperature will also drop rapidly, making him feel cold; therefore, it is required that if the ventilation function is turned on while heating, the ventilation motor will run at a low speed, and a small amount of water vapor will be discharged while keeping the bathroom temperature as low as possible; this requires the use of high and low speed taps on the ventilation motor to adjust the speed. For another example, there is another common single-motor air-heated bathroom heater on the market. A motor drives the first wind wheel to rotate, and a switching damper is set in the air duct to switch between blowing and ventilation. Since most consumers need a large ventilation volume, the motor will run at high speed during ventilation to quickly discharge the moisture in the bathroom. However, if the wind speed is too high during heating, the wind temperature will be low and the body will feel cold, which requires the motor to have high and low speeds, and the motor can run at low speed during heating. There are usually two implementation technologies for bathroom heaters with high and low speed motors on the market. One technology is to connect the high and low speed taps of the motor to multi-connection wiring posts and multi-position rocker switches respectively, and consumers can switch between high and low speeds by switching the switch when using it. The other technology is to connect the high and low speed taps of the motor to multiple relays respectively, and use a program-based intelligent controller to achieve high and low speed switching of the motor under different states. The first technology will greatly increase the complexity of wiring, and requires adding another button to the multi-position rocker switch and another wire to the interconnect cable, which also increases the cost a lot; the second technology, because of the need to use an intelligent controller, greatly increases the cost, which is not conducive to the promotion of products and technologies. Utility Model Content

[0003] In order to solve the deficiencies in the above-mentioned prior art, the utility model proposes a bathroom heater with high and low speed motors.

[0004] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0005] A bathroom heater with high and low speed motor comprises a chassis and a panel, wherein the chassis is provided with an air exchange port, the panel is provided with an air inlet and an air outlet, the chassis is provided with an air exchange assembly connecting the air exchange port and the air inlet, and an air outlet assembly connecting the air outlet and the air inlet, the air outlet is connected to the air outlet assembly through a heater, the air exchange assembly comprises a first air cavity provided in the chassis, the first air cavity is connected to the air inlet, and the first air cavity is connected to the air exchange port through an air exchange channel, a first wind wheel is provided in the first air cavity and is driven to rotate by a speed regulating motor, a temperature control switch with normally open contacts is connected between the high-speed tap and the low-speed tap of the speed regulating motor, and the temperature control switch is installed close to the heater.

[0006] A preferred technical solution, wherein the first air chamber is connected to the air exchange channel via a ventilation duct, the air outlet assembly comprises an air outlet channel, a ventilation duct, a first air chamber, and a speed regulating motor and a first wind wheel installed in the first air chamber, one end of the ventilation duct connected to the air exchange channel is also connected to the air outlet channel, the other end of the air outlet channel is connected to the air outlet via a heater, the ventilation duct is connected to the air exchange channel and the air outlet channel respectively via an active switching damper, the switching damper is switched by a driving motor, and a first micro switch and a second micro switch located on one side of the driving motor are also provided in the chassis.

[0007] A preferred technical solution is that a rotating shaft is fixedly provided on one side of the switching damper, and the switching damper is rotatably installed on the inner wall of the connection between the air exchange channel and the air outlet channel through the rotating shaft, and the rotating shaft is driven to rotate by a driving motor, and the other side of the switching damper can be rotated to respectively rest against the inner wall of the side where the ventilation duct is connected to the air exchange channel and the inner wall of the side where the ventilation duct is connected to the air outlet channel.

[0008] The preferred technical solution is that the bathroom heater is provided with a first control circuit, which includes a first wiring board, wherein the terminal 1 and the terminal 2 of the first wiring board are respectively connected to the neutral line N and the live line L through the circuit breaker K1, and a double-throw switch S1 is provided between the terminal 2 of the first wiring board and the circuit breaker K1, wherein the circuit breaker K1 is connected to the movable contact of the double-throw switch S1, wherein a fixed contact of the double-throw switch S1 is connected to the terminal 2 of the first wiring board and a movable contact connected to the single-throw switch S2, wherein the other fixed contact of the double-throw switch is connected to the terminal 3 of the first wiring board, wherein the fixed contact of the single-throw switch S2 is connected to the terminal 4 of the first wiring board, and the terminal 5 of the first wiring board is connected to the A heater is connected in series between terminals 8, terminal 7 of the first wiring board is connected to the movable contact of the first micro-switch S3, a fixed contact of the first micro-switch S3 is respectively connected to the drive motor M2 and a fixed contact of the second micro-switch S4, another fixed contact of the second micro-switch S4 is respectively connected to another fixed contact of the first micro-switch S3 and the speed regulating motor M1, the movable contact of the second micro-switch S4 is connected to terminal 6 of the first wiring board, the drive motor M2 is connected to terminal 8 of the first wiring board, the speed regulating motor M1 is connected to terminal 8 of the first wiring board, and tap 1 and tap 2 of the speed regulating motor M1 are also connected through a temperature control switch θ1.

[0009] A preferred technical solution is that the air outlet assembly includes a second air cavity, a rotating motor, a second wind wheel and an air outlet channel, the second air cavity is connected to the air inlet, and the second air cavity is connected to the air outlet through the air outlet channel, the heater is arranged between the air outlet channel and the air outlet, and the second wind wheel is installed in the second air cavity and driven to rotate by the rotating motor.

[0010] The preferred technical solution is that the bathroom heater is provided with a second control circuit, and the second control circuit includes a second wiring board, terminals 1 and 2 of the second wiring board are respectively connected to the neutral wire N and the live wire L through the circuit breaker K2, terminals 3, 4 and 5 of the second wiring board are respectively connected to the ventilation switch S5, the blowing switch S6 and the air heating switch S7 on the switch board, the power switch S8 on the switch board, a heater is connected in series between terminals 6 and 10 of the second wiring board, a rotating motor M3 is connected in series between pins 7 and 10 of the second wiring board, a speed regulating device M1 is connected between terminals 8 and 10 of the second wiring board, and taps 1 and 2 of the speed regulating motor M1 are also connected through a temperature control switch θ1.

[0011] According to a preferred technical solution, the heater is a PTC heater.

[0012] Compared with the prior art, the beneficial effects are:

[0013] The utility model has a simple structure and is easy to use. The speed of the high and low speed motors is controlled by installing a temperature control switch near the heater. When the heater is turned on, the temperature control switch is turned on, and the high and low speed motors rotate at low speeds, so that the warm air blown out has a low wind speed and will not reduce the body temperature. When the heater is not turned on, the high and low speed motors rotate at high speeds, which can increase the blowing and air exchange volume, and perform high-efficiency ventilation and blowing. The utility model can adjust the wind speed in real time, and has a simple structure and low cost, which is conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of Example 1;

[0015] Figure 2 yes Figure 1 A partial structural diagram of

[0016] Figure 3 yes Figure 2 A partial structural diagram of

[0017] Figure 4 is a schematic diagram of the first micro switch and the second micro switch in Example 1;

[0018] Figure 5 is a schematic diagram of the first control circuit in Example 1;

[0019] Figure 6 is a schematic structural diagram of Example 2;

[0020] Figure 7 yes Figure 6 A partial structural diagram of

[0021] Figure 8 This is a schematic diagram of the second control circuit of Example 2.

[0022] Figure numerals: 21, chassis; 22, panel; 23, air inlet; 24, air outlet; 25, air exchange outlet; 26, first air cavity; 27, first wind wheel; 28, air exchange channel; 29, ventilation duct; 30, air outlet channel; 31, heater; 32, switching damper; 33, driving motor; 34, second air cavity; 35, second wind wheel; 36, first micro switch; 37, second micro switch. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] A bathroom heater with high and low motor speeds, comprising a chassis 21 and a panel 22, wherein the chassis 21 is provided with an air exchange port 25, and the panel 22 is provided with an air inlet 23 and an air outlet 24, wherein the chassis 21 is provided with an air exchange component connecting the air exchange port 25 and the air inlet 23, through which the air exchange component is used to lead the air at the air inlet 23 to the air exchange port 25 for discharge, thereby ventilating the indoor air, and an air outlet component connecting the air outlet 24 and the air inlet 23, through which the air at the air inlet 23 is led to the air outlet 24 for discharge, thereby blowing air, wherein the air outlet 24 is connected to the air outlet component via a heater 31, and the air at the air outlet 24 is heated by the heater 31, thereby realizing the function of blowing warm air;

[0026] The air exchange component includes a first air cavity 26 arranged in the chassis 21, the first air cavity 26 is connected to the air inlet 23, and the first air cavity 26 is connected to the air exchange port 25 through the air exchange channel 28, a first wind wheel 27 is arranged in the first air cavity 26 and is driven to rotate by a speed regulating motor, a temperature control switch with a normally open contact is connected between the high-speed tap and the low-speed tap of the speed regulating motor, and the temperature control switch is installed close to the heater 31, and the heater 31 is preferably a PTC heater 31.

[0027] A temperature control switch with a normally open contact in series between the high-speed tap and the low-speed tap is installed close to the heater 31, specifically installed in the chassis 21 between the heater 31 and the air outlet 24. The temperature control switch adopts existing technology, such as KSD301 temperature control switch. The temperature control switch has a mounting hole and can be installed in the chassis 21 by screws;

[0028] When the heater 31 is not working, the temperature control switch is in the off state. At this time, only the high-speed tap is connected to the power supply, and the speed regulating motor is in a high-speed operation state, which can increase the blowing volume and air exchange volume, and perform high-efficiency ventilation and blowing; when the heater 31 is working, the ambient temperature rises, thereby turning on the temperature control switch. At this time, the low-speed tap is connected to the power supply, and the speed of the speed regulating motor decreases accordingly. The speed regulating motor works in a low-speed state, and the speed of the warm air blown out is low, which will not reduce the body temperature.

[0029] A preferred technical solution, wherein the first air cavity 26 is connected to the air exchange channel 28 through a ventilation duct 29, the air outlet assembly comprises an air outlet channel, a ventilation duct 29, a first air cavity 26, and a speed regulating motor and a first wind wheel 27 installed in the first air cavity 26, one end of the ventilation duct 29 connected to the air exchange channel 28 is also connected to the air outlet channel 30, the other end of the air outlet channel 30 is connected to the air outlet 24 through a heater 31, the air outlet assembly and the air exchange assembly share the first air cavity 26, the speed regulating motor, the first wind wheel 27 and the ventilation duct 29, the ventilation duct 29 is connected to the air exchange channel 28 and the air outlet channel 30 respectively through an active switching damper 32, the switching damper 32 is switched by a driving motor 33, and a first micro switch 36 and a second micro switch 37 located on one side of the driving motor 33 are also provided in the chassis 21.

[0030] The first micro switch 36 and the second micro switch 37 are spaced apart on one side of the driving motor 33. The driving motor 33 is a stepping motor. A movable block that rotates with the rotor is connected to the rotor of the stepping motor. The movable block touches the first micro switch 36 and the second micro switch 37 respectively through rotation.

[0031] A preferred technical solution is that a rotating shaft is fixedly provided on one side of the switching damper 32, and the switching damper 32 is rotatably installed on the inner wall of the connection between the air exchange channel 28 and the air outlet channel 30 through the rotating shaft, and the rotating shaft is driven to rotate by a driving motor 33. The other side of the switching damper 32 can be rotated to respectively rest against the inner wall of the ventilation duct 29 on the side connected to the air exchange channel 28 and the inner wall of the ventilation duct 29 on the side connected to the air outlet channel 30.

[0032] The driving motor 33 drives the rotating shaft to rotate, thereby driving the switching damper 32 to rotate to switch the channel.

[0033] The preferred technical solution is that the bathroom heater is provided with a first control circuit, which includes a first wiring board, wherein the terminals 1 and 2 of the first wiring board are respectively connected to the neutral line N and the live line L through the circuit breaker K1, and a double-throw switch S1 is provided between the terminal 2 of the first wiring board and the circuit breaker K1, wherein the circuit breaker K1 is connected to the movable contact of the double-throw switch S1, wherein a fixed contact of the double-throw switch S1 is connected to the terminal 2 of the first wiring board and a movable contact connected to the single-throw switch S2, wherein the other fixed contact of the double-throw switch is connected to the terminal 3 of the first wiring board, wherein the fixed contact of the single-throw switch S2 is connected to the terminal 4 of the first wiring board, a heater is connected in series between the terminal 5 and the terminal 8 of the first wiring board, and the terminal 7 of the first wiring board is connected to the The movable contact of the first micro switch S3, a fixed contact of the first micro switch S3 is respectively connected to the drive motor M2 and a fixed contact of the second micro switch S4, another fixed contact of the second micro switch S4 is respectively connected to another fixed contact of the first micro switch S3 and the speed regulating motor M1, the movable contact of the second micro switch S4 is connected to the terminal 6 of the first wiring board, the drive motor M2 is connected to the terminal 8 of the first wiring board, the speed regulating motor M1 is connected to the terminal 8 of the first wiring board, and the tap 1 and the tap 2 of the speed regulating motor M1 are also connected through the temperature control switch θ1, wherein the first micro switch S3 and the second micro switch S4 are switches of single-pole double-throw structure, with one movable contact and two fixed contacts.

[0034] Example 2

[0035] A bathroom heater with high and low motor speeds, comprising a chassis 21 and a panel 22, wherein the chassis 21 is provided with an air exchange port 25, and the panel 22 is provided with an air inlet 23 and an air outlet 24, wherein the chassis 21 is provided with an air exchange component connecting the air exchange port 25 and the air inlet 23, through which the air exchange component is used to lead the air at the air inlet 23 to the air exchange port 25 for discharge, thereby ventilating the indoor air, and an air outlet component connecting the air outlet 24 and the air inlet 23, through which the air at the air inlet 23 is led to the air outlet 24 for discharge, thereby blowing air, wherein the air outlet 24 is connected to the air outlet component via a heater 31, and the air at the air outlet 24 is heated by the heater 31, thereby realizing the function of blowing warm air;

[0036] The air exchange component includes a first air cavity 26 arranged in the chassis 21, the first air cavity 26 is connected to the air inlet 23, and the first air cavity 26 is connected to the air exchange port 25 through the air exchange channel 28, a first wind wheel 27 is arranged in the first air cavity 26 and is driven to rotate by a speed regulating motor, a temperature control switch with a normally open contact is connected between the high-speed tap and the low-speed tap of the speed regulating motor, and the temperature control switch is installed close to the heater 31, and the heater 31 is preferably a PTC heater 31.

[0037] A temperature control switch with a normally open contact in series between the high-speed tap and the low-speed tap is installed close to the heater 31, specifically installed in the chassis 21 between the heater 31 and the air outlet 24. The temperature control switch adopts existing technology, such as KSD301 temperature control switch. The temperature control switch has a mounting hole and can be installed in the chassis 21 by screws;

[0038] When the heater 31 is not working, the temperature control switch is in the off state. At this time, only the high-speed tap is connected to the power supply, and the speed regulating motor is in a high-speed operation state, which can increase the blowing volume and air exchange volume, and perform high-efficiency ventilation and blowing; when the heater 31 is working, the ambient temperature rises, thereby turning on the temperature control switch. At this time, the low-speed tap is connected to the power supply, and the speed of the speed regulating motor decreases accordingly. The speed regulating motor works in a low-speed state, and the speed of the warm air blown out is low, which will not reduce the body temperature.

[0039] A preferred technical solution is that the air outlet assembly includes a second air cavity 34, a rotating motor, a second wind wheel 35 and an air outlet channel 30, the second air cavity 34 is connected to the air inlet 23, and the second air cavity 34 is connected to the air outlet 24 through the air outlet channel 30, the heater 31 is arranged between the air outlet channel 30 and the air outlet 24, and the second wind wheel 35 is installed in the second air cavity 34 and driven to rotate by the rotating motor.

[0040] The preferred technical solution is that the bathroom heater is provided with a second control circuit, and the second control circuit includes a second wiring board, terminals 1 and 2 of the second wiring board are respectively connected to the neutral wire N and the live wire L through the circuit breaker K2, terminals 3, 4 and 5 of the second wiring board are respectively connected to the ventilation switch S5, the blowing switch S6 and the air heating switch S7 on the switch board, the power switch S8 on the switch board, a heater is connected in series between terminals 6 and 10 of the second wiring board, a rotating motor M3 is connected in series between pins 7 and 10 of the second wiring board, a speed regulating device M1 is connected between terminals 8 and 10 of the second wiring board, and taps 1 and 2 of the speed regulating motor M1 are also connected through a temperature control switch θ1.

[0041] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A bathroom heater with high and low motor speeds, characterized in that: The invention comprises a case (21) and a panel (22), wherein the case (21) is provided with an air exchange port (25), the panel (22) is provided with an air inlet (23) and an air outlet (24), the case (21) is provided with an air exchange component connecting the air exchange port (25) and the air inlet (23), and an air outlet component connecting the air outlet (24) and the air inlet (23), the air outlet (24) is connected to the air outlet component via a heater (31), and the air exchange component comprises a device A first air chamber (26) is provided in the chassis (21), the first air chamber (26) is connected to the air inlet (23), and the first air chamber (26) is connected to the air exchange port (25) via an air exchange passage (28), a first wind wheel (27) is provided in the first air chamber (26) and is driven to rotate by a speed regulating motor, a temperature control switch with a normally open contact is connected between the high-speed tap and the low-speed tap of the speed regulating motor, and the temperature control switch is installed near the heater (31).

2. A bathroom heater with high and low motor speeds as claimed in claim 1, characterized in that: The first air cavity (26) is connected to the air exchange passage (28) through a ventilation duct (29); the air outlet assembly comprises an air outlet passage, a ventilation duct (29), a first air cavity (26), and a speed regulating motor and a first wind wheel (27) installed in the first air cavity (26); one end of the ventilation duct (29) connected to the air exchange passage (28) is also connected to an air outlet passage (30); the other end of the air outlet passage (30) is connected to an air outlet (24) through a heater (31); the ventilation duct (29) is connected to the air exchange passage (28) and the air outlet passage (30) respectively through a movable switching damper (32); the switching damper (32) is switched by a driving motor (33); and a first micro switch (36) and a second micro switch (37) located on one side of the driving motor (33) are also provided in the chassis (21).

3. A bathroom heater with high and low motor speeds as claimed in claim 2, characterized in that: A rotating shaft is fixedly provided on one side of the switching damper (32), and the switching damper (32) is rotatably mounted on the inner wall of the connection between the air exchange passage (28) and the air outlet passage (30) via the rotating shaft. The rotating shaft is driven to rotate by a driving motor (33), and the other side of the switching damper (32) can be rotated to respectively abut against the inner wall of the ventilation passage (29) on the side connected to the air exchange passage (28) and the inner wall of the ventilation passage (29) on the side connected to the air outlet passage (30).

4. A bathroom heater with high and low motor speeds as claimed in claim 2, characterized in that: The bathroom heater is provided with a first control circuit, which includes a first wiring board, wherein the terminals 1 and 2 of the first wiring board are respectively connected to the neutral line N and the live line L through the circuit breaker K1, and a double-throw switch S1 is provided between the terminal 2 of the first wiring board and the circuit breaker K1, wherein the circuit breaker K1 is connected to the movable contact of the double-throw switch S1, wherein a fixed contact of the double-throw switch S1 is connected to the terminal 2 of the first wiring board and a movable contact connected to the single-throw switch S2, wherein the other fixed contact of the double-throw switch is connected to the terminal 3 of the first wiring board, and the fixed contact of the single-throw switch S2 is connected to the terminal 4 of the first wiring board, and the terminals 5 and 8 of the first wiring board are connected to each other. A heater is connected in series between the two terminals, the terminal 7 of the first wiring board is connected to the movable contact of the first micro-switch S3, a fixed contact of the first micro-switch S3 is respectively connected to the drive motor M2 and a fixed contact of the second micro-switch S4, another fixed contact of the second micro-switch S4 is respectively connected to another fixed contact of the first micro-switch S3 and the speed regulating motor M1, the movable contact of the second micro-switch S4 is connected to the terminal 6 of the first wiring board, the drive motor M2 is connected to the terminal 8 of the first wiring board, the speed regulating motor M1 is connected to the terminal 8 of the first wiring board, and the tap 1 and tap 2 of the speed regulating motor M1 are also connected through the temperature control switch θ1.

5. A bathroom heater with high and low motor speeds as claimed in claim 1, characterized in that: The air outlet assembly comprises a second air cavity (34), a rotating motor, a second wind wheel (35) and an air outlet channel (30); the second air cavity (34) is connected to the air inlet (23), and the second air cavity (34) is connected to the air outlet (24) through the air outlet channel (30); the heater (31) is arranged between the air outlet channel (30) and the air outlet (24); the second wind wheel (35) is installed in the second air cavity (34) and is driven to rotate by the rotating motor.

6. A bathroom heater with high and low motor speeds as claimed in claim 5, characterized in that: The bathroom heater is provided with a second control circuit, which includes a second wiring board, wherein terminals 1 and 2 of the second wiring board are respectively connected to the neutral line N and the live line L through a circuit breaker K2, terminals 3, 4 and 5 of the second wiring board are respectively connected to the ventilation switch S5, the blowing switch S6 and the air heating switch S7 on the switch board, and the power switch S8 on the switch board, a heater is connected in series between terminals 6 and 10 of the second wiring board, a rotating motor M3 is connected in series between pins 7 and 10 of the second wiring board, a speed regulating motor M1 is connected between terminals 8 and 10 of the second wiring board, and taps 1 and 2 of the speed regulating motor M1 are also connected through a temperature control switch θ1.

7. A bathroom heater with high and low motor speeds as claimed in claim 1, characterized in that: The heater (31) is a PTC heater.

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