Warm air heater

Abstract

To provide a hot air heater which is prevented in a fluctuating operation by which a room temperature is raised and descended.SOLUTION: A hot air heater comprises: an apparatus main body 1; heat generation means 9; calorific power determination means 29 for determining a calorific power of the heat generation means 9; an air blower 5 for blowing out hot air; an operation part 2 provided with a fluctuating mode operation switch 25; and a control part 28 for controlling the heat generation means 9 so as to reach the calorific power determined by the calorific power determination means 29, and determining a blowing quantity of the air blower 5 according to the calorific power determined by the calorific power determination means 29. When a fluctuating mode is set, a fluctuation operation for oscillation-increasing / decreasing the blowing quantity of the air blower 5 determined according to the calorific power is operated, a rise and a fall of a room temperature caused by fluctuation control are thereby prevented, or a time up until the room temperature is raised up to a set temperature can be prevented from being elongated.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This invention relates to a warm air heater for heating indoors.

Background Art

[0002] Conventionally, in this type of device, the calorific value is increased and decreased in a swinging manner at a predetermined cycle according to an instruction from the fluctuation control unit around the calorific value determined by the calorific value determination means, and at the same time, the air volume from the blower or the wind direction angle of the variable blade is also changed, so that the warm air temperature can be varied without changing the average calorific value, and a constant warm air is not always blown only to a local part of the body, so that the temperature rise of the local part of the body is suppressed, a cold and warm stimulus is given, and the warm air can be applied to a wide range of the body, and there has been a device that can effectively perform heating. (For example, see Patent Document 1.)

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in this conventional device, the calorific value is increased and decreased in a swinging manner at a predetermined cycle, and at the same time, the air volume from the blower is also changed. However, for example, when the room temperature is near the set temperature, if the fluctuation control is performed in this state, the calorific value increases and decreases, and the room temperature swings up and down with respect to the set temperature, which may impair the heating feeling.

[0005] In addition, when operating at a high calorific value in order to raise the room temperature from a low temperature to the set temperature, if the fluctuation control is performed in this state, the calorific value increases and decreases from the high calorific value to the medium calorific value, and there is a problem that it takes a long time to reach the set temperature.

Means for Solving the Problems

[0006] In order to solve the above problems, in claim 1 of the present invention, there is provided an apparatus main body having a warm air outlet, heat generating means provided in the apparatus main body, calorific value determining means for determining the calorific value of the heat generating means, a blower for supplying air to the heat generating means to blow out warm air from the warm air outlet, an operation unit provided with a fluctuation mode operation switch, and controlling the heat generating means so as to obtain the calorific value determined by the calorific value determining means, and a control unit for determining the air volume of the blower according to the calorific value determined by the calorific value determining means. In the warm air heater, when the fluctuation mode operation switch is operated and the fluctuation mode is set, the control unit performs a fluctuation operation of increasing and decreasing the air volume of the blower determined according to the calorific value in a predetermined cycle.

[0007] Also , front When the fluctuation mode is set, when the calorific value is the high calorific value, the control unit makes the amplitude of increasing and decreasing the air volume of the blower, which is increased and decreased in a predetermined cycle, smaller than the amplitude of increasing and decreasing when the calorific value is less than the high calorific value.

Effect of the Invention

[0008] According to claim 1 of the present invention, when the fluctuation mode is set, since the fluctuation control is performed in which the air volume of the blower determined according to the calorific value is increased and decreased in a predetermined cycle, it is possible to prevent the room temperature from rising and falling due to the fluctuation control, and to prevent the time until the room temperature rises to the set temperature from becoming long, and a comfortable heating feeling can be given by the fluctuation of the strength of the air blowing.

[0009] Also , yu When the fluctuation mode is set, when the calorific value is the high calorific value, the amplitude of increasing and decreasing the air volume of the blower, which is increased and decreased in a predetermined cycle, is made smaller than the amplitude of increasing and decreasing when the calorific value is less than the high calorific value. Therefore, it is possible to prevent the room temperature from rising and falling due to the fluctuation control when the calorific value is high, and to prevent the time until the room temperature rises to the set temperature from becoming long, while preventing heat from accumulating in the apparatus main body and the temperature inside the apparatus from becoming high when the air volume decreases.

[0010] Further, if the amplitude of the increase or decrease in the air volume is greatly fluctuated at high calorific value, the vertical fluctuation of the temperature of the metal parts inside the device becomes larger than when it is less than the high calorific value, and noise is generated due to the expansion and contraction of the metal parts inside the device. However, by making the amplitude of the increase or decrease in the air volume at high calorific value smaller than the amplitude of the increase or decrease in the air volume when it is less than the high calorific value, the vertical fluctuation of the temperature of the metal parts inside the device can be reduced, and the generation of noise due to the expansion and contraction of the metal parts inside the device can be prevented.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

[0012] Next, an embodiment to which the present invention is applied will be described with reference to the drawings. 1 is the device main body of the warm air heater, 2 is the operation unit provided in the upper front part, 3 is the warm air outlet to which the louver 4 for guiding the warm air is attached, 5 is attached to the air inlet 6 on the back via the fan guard 7 and is a blower driven by a convection fan motor (hereinafter referred to as a convection fan), 8 is a blower box that communicates the air inlet 6 and the warm air outlet 3, 9 is a heat generation means (hereinafter referred to as a burner part) provided with a burner head 10 protruding into the blower box 8, 11 is a combustion cylinder that surrounds the burner head 10 to form a combustion space, 12 is a heat shield plate disposed directly above the combustion cylinder 11 in the blower box 8, the combustion cylinder 11 is attached to a combustion cylinder substrate 13, and the combustion cylinder substrate 13 to which the combustion cylinder 11 is attached is attached to the blower box 8.

[0013] The exterior body of the device main body 1 is configured by fixing a front panel 14 that covers the front, a top plate 15 that covers the top, and a back plate 16 that covers the sides and the back on a pedestal 17, and the warm air outlet 3 is attached to the front panel 14.

[0014] Fuel from a cartridge-type tank (not shown) that supplies liquid fuel such as kerosene is temporarily stored in the fixed tank 18, and the electromagnetic pump 20 pumps the fuel in the fixed tank 18 to the burner unit 9 via the fuel pipe 19. The combustion air is blown through the air pipe 22 by the combustion fan 21. Thus, the burner unit 9 receives the supply of combustion air from the combustion fan 21 and the supply of fuel from the electromagnetic pump 20, and burns to generate combustion gas.

[0015] The operation unit 2 is provided with a heating operation switch 23 for starting and stopping the heating operation, a room temperature setting switch 24 for setting a desired room temperature, and a fluctuation mode operation switch 25 for starting and stopping the fluctuation mode which is the fluctuation operation.

[0016] 26 is a room temperature detection means composed of a thermistor or the like, which detects the room temperature. 27 is a timer. When a timing start signal is input, it starts timing. When it times a predetermined time from the start of timing, it outputs a timing signal, resets once, and starts re-timing. When a timing end signal is input, it resets once and ends timing.

[0017] 28 is a control unit that controls the heating operation and the fluctuation mode operation during the heating operation. In the fluctuation mode operation, the control unit 28 stores in advance, as 1 / f fluctuation data, a waveform that becomes the 1 / f fluctuation cycle in the form of the amount of rotation speed fluctuation per predetermined time (for example, 1 second) in order to vary the rotation speed of the convection fan motor that drives the blower 5 up and down within a predetermined range in the 1 / f fluctuation cycle. Here, a plurality of types of 1 / f fluctuation data are stored in advance for each increase / decrease amplitude of the rotation speed of the convection fan motor. 29 is a calorific value determination means built in the control unit 28, which determines the calorific value based on the room temperature detected by the room temperature detection means 26 and the desired room temperature set by the room temperature setting switch 24.

[0018] Next, the fluctuation mode operation will be described with reference to the flowchart of FIG. 5. First, when the fluctuation mode operation switch 25 of the operation unit 2 is turned on during the heating operation (S1), the control unit 28 starts the fluctuation mode operation. (S2)

[0019] Then, the control unit 28 checks whether the calorific value is a high calorific value (S3). If it is confirmed that the calorific value is equal to or higher than a predetermined calorific value (hereinafter referred to as a high calorific value), the control unit 28 sets the amplitude of the rotational speed of the convection fan motor that drives the blower 5 to fluctuate up and down within a range of 100 rpm with respect to the normal rotational speed determined according to the high calorific value. (S4) Then, the control unit 28 outputs a start signal to the timer 27 to start timing for a predetermined time. (S5)

[0020] In addition, when the control unit 28 confirms in (S3) that the calorific value is not a high calorific value, that is, less than the high calorific value, the control unit 28 sets the amplitude of the rotational speed of the convection fan motor that drives the blower 5 to fluctuate up and down within a range of 200 rpm with respect to the normal rotational speed determined according to the calorific value (S6), and proceeds to (S5).

[0021] When the timer 27 starts timing and a predetermined time has elapsed (S7), the timer 27 outputs a timing signal, and the control unit 28 changes the target rotational speed of the convection fan motor based on the fluctuation data stored in advance as data. (S8)

[0022] Next, the control unit 28 checks whether the fluctuation mode operation switch 25 of the operation unit 2 has been turned off (S9). If the fluctuation mode operation switch 25 has been turned off, the control unit 28 ends the fluctuation mode operation (S10) and returns to the normal operation. (S11)

[0023] In addition, if the fluctuation mode operation switch 25 of the operation unit 2 has not been turned off in (S9), the control unit 28 checks whether the calorific value has been changed (S12). If the calorific value has been changed, the control unit 28 returns to (S3). If the calorific value has not been changed, the control unit 28 returns to (S5), thereby increasing or decreasing the air volume in a predetermined cycle.

[0024] As described above, in the fluctuation mode operation, instead of causing fluctuations by varying the calorific value up and down, fluctuations are caused by varying the air volume of the blower 5 up and down. Therefore, for example, when the room temperature is near the set temperature, if fluctuation control is performed in this state, the calorific value increases and decreases, and the room temperature does not swing up and down with respect to the set temperature, and a heating feeling due to the fluctuation control can be obtained.

[0025] Also, even when operating at a high calorific value to raise the room temperature from a low temperature to the set temperature, since the fluctuation control is performed while maintaining this high calorific value, it is possible to prevent the time taken for the calorific value to increase and decrease from the high calorific value to the medium calorific value until the room temperature reaches the set temperature.

[0026] Also, by increasing and decreasing the air volume of the blower 5 up and down with respect to the normal air volume of the blower 5 determined corresponding to the calorific value, when the air volume is increased, the warm air reaches farther than the normal air volume, and the temperature deviation in the room can be reduced. Especially when the calorific value is low, the normal air volume of the blower 5 determined corresponding to the calorific value is also low. When it is moved up and down within a predetermined range in this state, the amount of increase and decrease becomes larger with respect to the normal air volume, and when increased, the warm air can reach farther than when the normal air volume is present.

[0027] Also, when the air volume of the blower 5 is fluctuated up and down in the high calorific value state, when the air volume is decreased, heat accumulates in the device, and the metal parts in the device main body 1 expand greatly. When the air volume is increased, the temperature in the device main body 1 drops, and the metal parts in the device contract greatly. By reducing the range of fluctuation of the air volume of the blower 5 up and down in the high calorific value state, the expansion and contraction of the metal parts in the device main body 1 can be reduced, and the generation of noise can be prevented.

Explanation of Signs

[0028] 1 Device main body 2 Operation unit 3 Warm air outlet 5 Blower 9 Heat generation means 25 Fluctuation mode operation switch 29 Heat generation amount determination means

Claims

Claim 1 In a warm air heater comprising: a device body having a warm air outlet; a heat generating means provided in the device body; a heat generation amount determining means for determining the heat generation amount of the heat generating means; a blower for supplying air to the heat generating means to blow warm air from the warm air outlet; an operation unit provided with a fluctuation mode operation switch; and a control unit for controlling the heat generating means to be the heat generation amount determined by the heat generation amount determining means and determining the air volume of the blower according to the heat generation amount determined by the heat generation amount determining means, when the fluctuation mode operation switch is operated and the fluctuation mode is set, the control unit performs a fluctuation operation of increasing and decreasing the air volume of the blower determined according to the heat generation amount in a predetermined cycle, and when the fluctuation mode is set, when the heat generation amount is a high heat generation amount, the control unit makes the amplitude of increasing and decreasing the air volume of the blower in the predetermined cycle smaller than the amplitude of increasing and decreasing when the heat generation amount is less than the high heat generation amount. A warm air heater characterized by this.

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