CN209960774U - Gas electric fan heater with fan time delay function - Google Patents
Gas electric fan heater with fan time delay function Download PDFInfo
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- CN209960774U CN209960774U CN201920655128.XU CN201920655128U CN209960774U CN 209960774 U CN209960774 U CN 209960774U CN 201920655128 U CN201920655128 U CN 201920655128U CN 209960774 U CN209960774 U CN 209960774U
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Abstract
The utility model discloses a gas electric fan heater with fan delay function, including DC fan, gas valve, fan delay circuit, the DC fan provides heat dissipation for the gas electric fan heater, when the gas electric fan heater starts, starts the work before the gas valve, waits that the DC fan rotational speed is stable and the input voltage of the gas electric fan heater reaches normal operating voltage, the gas valve starts the work; and when the input voltage of the gas warm-air blower is smaller than a preset working voltage threshold value, after the gas valve stops working, the direct current fan works in a delayed mode through the fan delay circuit to continue to radiate heat for the gas warm-air blower. The fan time delay function is low in realization cost and high in safety performance.
Description
Technical Field
The utility model relates to a heat technical field, especially relate to a gas electric fan heater with fan time delay function.
Background
The air conditioner has low heating energy efficiency ratio, serious power consumption and low heating speed, so that as early as ten years ago, the healthy, quick and comfortable gas heater is preferred for heating in winter in developed countries in Europe and America, and the gas heater unit is used in outdoor and outdoor occasions such as American office places, families, hotels, community sentries, fishing areas, walking streets and the like. Because the gas fan heater can produce very big heat when working, especially shut down after the fan heater work over a period of time, inside has accumulated a lot of heats and needs to give off, consequently, generally need inside direct current fan delay work a period of time, delay operating time can set for according to actual product needs. Software is generally adopted in the prior art for realization, so that a control chip such as an MCU is needed, and the realization cost is high and the safety performance is poor.
Therefore, how to design the fan delay function of the gas fan heater to realize low cost and high safety performance becomes a technical problem to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a gas electric fan heater with fan time delay function, its fan time delay function's realization is with low costs, the security performance is high.
In order to achieve the above object, the present invention provides a gas fan heater, which comprises a dc fan, a gas valve, and a fan delay circuit, wherein the dc fan provides heat dissipation for the gas fan heater, when the gas fan heater is started, the gas valve is started before the gas valve, and the gas valve is started after the dc fan has stable rotation speed and the input voltage of the gas fan heater reaches the normal working voltage; and when the input voltage of the gas warm-air blower is smaller than a preset working voltage threshold value, after the gas valve stops working, the direct current fan works in a delayed mode through the fan delay circuit to continue to radiate heat for the gas warm-air blower.
Furthermore, the input end of the fan delay circuit is connected with an energy storage element, the energy storage element stores electric energy when the gas valve works, and the electric energy is released when the gas valve stops working, so that the electric energy is provided for the fan delay circuit when the gas valve stops working.
Further, the energy storage element comprises at least one capacitor.
Further, the gas fan heater still includes gas valve drive circuit, include following two kinds of modes when the gas valve work: a full current operating mode and a power saving operating mode; in the starting process of the gas valve, the gas valve works in a full current working mode, and after the gas valve is stabilized, the gas valve driving circuit controls the gas valve to be switched into a power-saving working mode.
Further, the gas valve driving circuit controlling the gas valve to be switched to the power-saving working mode specifically includes: the gas valve driving circuit controls the PWM duty ratio of the gas valve, so that the working current of the gas valve is reduced.
Furthermore, the gas fan heater also comprises a filter circuit, and the gas valve driving circuit controls the PWM wave emitted by the gas valve to pass through the filter circuit and be converted into stable current.
Further, the gas fan heater also comprises a fan short-circuit protection circuit, and when the working current of the direct current fan is detected to exceed the maximum allowable current, the direct current fan and the gas valve are controlled to stop working.
Further, the gas fan heater also comprises a fan open-circuit protection circuit, and when the motor of the direct current fan is detected to be open-circuited or the plug is loosened or the plug is disconnected, the direct current fan and the gas valve are controlled to stop working.
Furthermore, the gas fan heater also comprises a power-shortage protection circuit, and when the input voltage of the gas fan heater is smaller than a preset power-shortage protection voltage threshold value, corresponding warning is given.
The utility model provides a gas electric fan heater, the realization of its fan time delay function is with low costs, the security performance is high.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a circuit diagram of a gas warm-air blower provided by an embodiment of the present invention.
Detailed Description
The utility model discloses a solve the problem that prior art exists, provide a gas electric fan heater, can reduce the self power consumption of normal during operation to operating duration has been prolonged.
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the gas fan heater according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Referring to fig. 1, a gas fan heater provided in an embodiment of the present invention includes a dc fan, a gas valve, and a fan delay circuit, wherein the dc fan provides heat dissipation for the gas fan heater, and when the gas fan heater is started, the gas fan heater starts to start before the gas valve, and after the rotational speed of the dc fan is stable and the input voltage of the gas fan heater reaches a normal operating voltage, the gas valve starts to operate; and when the input voltage of the gas warm-air blower is smaller than a preset working voltage threshold value, after the gas valve stops working, the direct current fan works in a delayed mode through the fan delay circuit to continue to radiate heat for the gas warm-air blower.
The embodiment of the utility model provides a gas electric fan heater, the realization of its fan time delay function is with low costs, the security performance is high.
Furthermore, the input end of the fan delay circuit is connected with an energy storage element, the energy storage element stores electric energy when the gas valve works, and the electric energy is released when the gas valve stops working, so that the electric energy is provided for the fan delay circuit when the gas valve stops working.
Further, the energy storage element comprises at least one capacitor.
The gas fan heater still includes gas valve drive circuit, the gas valve includes following two kinds of modes during operation: a full current operating mode and a power saving operating mode; in the starting process of the gas valve, the gas valve works in a full current working mode, and after the gas valve is stabilized, the gas valve driving circuit controls the gas valve to be switched into a power-saving working mode.
Further, the gas valve driving circuit controlling the gas valve to be switched to the power-saving working mode specifically includes: the gas valve driving circuit controls the PWM duty ratio of the gas valve, so that the working current of the gas valve is reduced.
In practical application, the gas warm air blower is externally connected with a storage battery for supplying power, the capacity of the storage battery is 4 amperes, when the gas warm air blower meets the starting condition and starts to work, the direct current fan is started firstly, the heat dissipation requirement of the warm air blower is met when the rotating speed of the direct current fan is stable, and after the input voltage of the gas warm air blower reaches the normal working voltage, the gas valve starts to work. In the starting process of the gas valve, the gas valve firstly works in a full current working mode, for example, the working current of the full current working mode is 1 ampere, after the gas valve is stabilized, the gas valve driving circuit controls the gas valve to be converted into a power-saving working mode, for example, the working current in the power-saving working mode can be controlled to be reduced to 1/3 in the full current working mode by controlling the PWM duty ratio, so that the power consumption is greatly reduced, and the working time of the gas fan heater is prolonged.
The embodiment of the utility model provides a gas electric fan heater, its gas valve drive circuit treat gas valve job stabilization back, can control the gas valve and trun into power saving mode, reduce the self power consumption of normal during operation to operating duration has been prolonged. In addition, when the gas warm air blower stably works, the gas valve works in a power-saving working mode, the coil generates little heat, the working environment of the warm air blower is improved, the gas warm air blower is more suitable for stable work of an internal circuit of the warm air blower, and the working period and the service life of the warm air blower are prolonged.
All protection of the gas fan heater takes priority of the gas valve, namely whether the direct current fan has overcurrent short circuit or open circuit needs to be detected before the gas valve works, the fan is ensured to work normally, namely the rotating speed is stable, the gas valve is started to work after the input voltage of the fan heater reaches the normal working voltage, and the gas valve is started to work in a power-saving mode after the gas valve is started to work safely for 2 ~ 3 seconds at full voltage.
Further, please refer to fig. 1, the gas fan heater further includes a filter circuit, and the gas valve driving circuit controls the PWM wave emitted by the gas valve to pass through the filter circuit and be converted into a stable current.
Further, the gas fan heater also comprises a fan short-circuit protection circuit, and when the working current of the direct current fan is detected to exceed the maximum allowable current, the direct current fan and the gas valve are controlled to stop working.
Further, the maximum allowable current is 1.5 times of the rated operating current of the direct current fan.
Further, the gas fan heater also comprises a fan open-circuit protection circuit, and when the motor of the direct current fan is detected to be open-circuited or the plug is loosened or the plug is disconnected, the direct current fan and the gas valve are controlled to stop working.
Furthermore, the gas fan heater also comprises a power-shortage protection circuit, and when the input voltage of the gas fan heater is smaller than a preset power-shortage protection voltage threshold value, corresponding warning is given.
Further, the power-lack protection circuit comprises an LED display lamp and/or a buzzer, and when the input voltage of the gas fan heater is smaller than the undervoltage working voltage threshold value, the LED display lamp is lightened and/or the buzzer starts buzzing to give corresponding warning.
Further, the direct current fan, the fan delay circuit, the gas valve and the gas valve driving circuit are arranged inside the gas warm air blower.
The working principle is illustrated by using a rated voltage of 12V, it should be noted that this is for better explaining the purpose of the embodiments of the present invention, and the numbers in the examples can be adjusted according to actual conditions, but not limiting the present invention, please refer to fig. 1, turn on the switch of the air heater, and access the battery, i.e. the rechargeable battery in fig. 1, if the battery voltage detection circuit detects that the battery voltage is above 12V, the DC fan starts to start, the rotational speed of the DC fan rises for about 2 ~ seconds, within the 2 ~ seconds because the DC fan is not completely started, the gas valve is prohibited to work, after the DC fan operates normally for 2 ~ seconds, the gas valve is started, the gas valve starts to operate in the full current operating mode just after the DC fan operates normally, after 2 ~ seconds, the gas valve is controlled to be in the power saving operating mode, during the startup process, if the battery voltage detection circuit detects that the battery voltage drops below 12V, the power shortage protection circuit operates, the power shortage indication lamp lights up to make corresponding warning, but the warning can still work until the battery voltage returns to the normal operation after 2V ~ seconds, the battery voltage returns to the power saving operating mode, the charger can continue to stop, the DC fan after the battery voltage detection circuit stops, the battery operates, the charger returns to 12V 11.11.11.
As shown in fig. 1, the warm air blower further has a fan short-circuit protection circuit, i.e. a motor overcurrent protection function, when the working current of the direct current fan is detected to exceed the maximum allowable current, the direct current fan is controlled to stop working, and the MOS drive is turned off so as to control the gas valve to stop working.
It should be noted that when the warm air blower is turned off, the gas valve is immediately closed, and the fan is stopped after being continuously operated for 11 ~ 13 seconds, because the gas is combusted to generate large heat, and when the warm air blower is turned off, the fan is required to be continuously operated to dissipate heat.
The embodiment of the utility model provides a gas electric fan heater includes direct current fan, gas valve, fan delay circuit, direct current fan provides the heat dissipation for the gas electric fan heater, when the gas electric fan heater starts, before the gas valve begins to start work, wait that direct current fan rotational speed is stable and the input voltage of gas electric fan heater reaches normal operating voltage after, the gas valve starts work; and when the input voltage of the gas warm-air blower is smaller than a preset working voltage threshold value, after the gas valve stops working, the direct current fan works in a delayed mode through the fan delay circuit to continue to radiate heat for the gas warm-air blower. The fan time delay function is low in realization cost and high in safety performance.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A gas warm-air drier with fan time delay function is characterized in that the gas warm-air drier comprises a DC fan, a gas valve and a fan time delay circuit,
the direct current fan provides heat dissipation for the gas warm air blower, when the gas warm air blower is started, the gas warm air blower starts to start working before the gas valve, and after the direct current fan is stable in rotating speed and the input voltage of the gas warm air blower reaches the normal working voltage, the gas valve starts to work; and when the input voltage of the gas warm-air blower is smaller than a preset working voltage threshold value, after the gas valve stops working, the direct current fan works in a delayed mode through the fan delay circuit to continue to radiate heat for the gas warm-air blower.
2. The gas fan heater with the fan delay function as recited in claim 1, wherein an input end of the fan delay circuit is connected with an energy storage element, the energy storage element stores electric energy when the gas valve works, and releases the electric energy when the gas valve stops working, so as to provide the electric energy for the fan delay circuit when the gas valve stops working.
3. The gas fan heater with fan delay function of claim 2, characterized in that said energy storage element comprises at least one capacitor.
4. The gas fan heater with fan delay function according to any one of claims 1 to 3, characterized in that, the gas fan heater further comprises a gas valve driving circuit, and the gas valve is operated in the following two modes: a full current operating mode and a power saving operating mode; in the starting process of the gas valve, the gas valve works in a full current working mode, and after the gas valve is stabilized, the gas valve driving circuit controls the gas valve to be switched into a power-saving working mode.
5. The gas fan heater with the fan delay function as claimed in claim 4, wherein the gas valve driving circuit controlling the gas valve to be switched to the power-saving operation mode specifically comprises: the gas valve driving circuit controls the PWM duty ratio of the gas valve, so that the working current of the gas valve is reduced.
6. The gas fan heater with the fan delay function according to claim 5, further comprising a filter circuit, wherein the gas valve driving circuit controls the PWM wave emitted by the gas valve to be converted into a stable current through the filter circuit.
7. The gas fan heater with fan delay function according to any one of claims 1 to 3, further comprising a fan short-circuit protection circuit for controlling the DC fan and the gas valve to stop working when detecting that the working current of the DC fan exceeds the maximum allowable current.
8. The gas fan heater with fan delay function according to any one of claims 1 to 3, further comprising a fan open circuit protection circuit for controlling the DC fan and the gas valve to stop working when detecting the open circuit of the DC fan motor or the loose plug or the broken plug.
9. The gas warm-air drier with the fan delay function according to any one of claims 1 to 3, wherein the gas warm-air drier further comprises an electricity shortage protection circuit, and when the input voltage of the gas warm-air drier is smaller than a preset electricity shortage protection voltage threshold, corresponding warning is given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655128.XU CN209960774U (en) | 2019-05-09 | 2019-05-09 | Gas electric fan heater with fan time delay function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655128.XU CN209960774U (en) | 2019-05-09 | 2019-05-09 | Gas electric fan heater with fan time delay function |
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| CN209960774U true CN209960774U (en) | 2020-01-17 |
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| CN201920655128.XU Active CN209960774U (en) | 2019-05-09 | 2019-05-09 | Gas electric fan heater with fan time delay function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116658450A (en) * | 2023-07-26 | 2023-08-29 | 苏州浪潮智能科技有限公司 | Fan control system, server system, fan control method and device |
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2019
- 2019-05-09 CN CN201920655128.XU patent/CN209960774U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116658450A (en) * | 2023-07-26 | 2023-08-29 | 苏州浪潮智能科技有限公司 | Fan control system, server system, fan control method and device |
| CN116658450B (en) * | 2023-07-26 | 2023-11-03 | 苏州浪潮智能科技有限公司 | Fan control system, server system, fan control method and device |
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