WO2015161551A1

WO2015161551A1 - Heating apparatus

Info

Publication number: WO2015161551A1
Application number: PCT/CN2014/079906
Authority: WO
Inventors: 陈克平
Original assignee: 陈克平
Priority date: 2014-04-25
Filing date: 2014-06-16
Publication date: 2015-10-29
Also published as: TW201541047A; CN103994481B; CN103994481A; TWI567355B; CN203928042U

Abstract

Disclosed is a heating apparatus comprising an oven face plate, a heating component, a housing and a fan; wherein the oven face plate is mounted on the housing, an accommodating chamber is formed between the oven face plate and the housing, the heating component and the fan are mounted in the accommodating chamber, the heating component is located below the oven face plate, a ventilation gap is formed between the heating component and a side wall of the housing, the fan gap is located below the heating component, the outward blowing direction of the fan faces the heating component, and a ventilation gap is formed between the fan and a side wall of the housing; a top wall of the housing is provided with several air outlets distributed at intervals in the circumferential direction, a lower end of the housing is provided with an air inlet; and the air inlet, the ventilation gap and the air outlets constitute a basin-like heat-dissipation channel. In the heating apparatus, during the operation of the fan, the heating component is continually kept covered by a basin-like heat-dissipation air screen, heat-dissipation effects are good and efficiency is high.

Description

Heating device

The invention relates to a heating device. Background technique

Existing heating appliances such as infrared heating furnaces or induction cookers generally include a housing, a heat generating disk disposed in the housing, a black crystal plate, and a fan. The black crystal plate is sealed and mounted on the base, and the fan is placed flat in the casing, and the side wall of the casing is provided with a heat dissipation hole. When the infrared heating furnace heats the container by infrared heating, the temperature around the heating plate also rises synchronously. Although the fan is provided in the housing, since the housing only opens the cooling holes in the side wall, convection cannot be formed, and the hot air flow is concentrated on the base. Inside, the heat dissipation effect is very poor. For a long time, it will affect the working performance of the heating appliance, and the high temperature of the base is easy to burn people.

In addition, the existing heating appliances generally automatically stop heating by temperature detection, which is easily affected by the external environment and causes inaccurate detection, thereby causing the water to boil for a long time and affecting the water quality. Summary of the invention

In view of the deficiencies of the prior art, it is an object of the present invention to provide a heating device having a good heat dissipation effect.

In order to achieve the above object, the present invention uses the following technical solutions:

A heating device comprising a furnace panel, a heat generating component, a casing and a fan; The furnace panel is mounted on the casing, and a receiving cavity is formed between the furnace panel and the casing, the heating assembly and the fan are installed in the receiving cavity, the heating component is located below the furnace panel, and the heating component is Forming a ventilation interval between the sidewalls of the casing, the fan spacing is located below the heat generating component, the wind direction of the fan faces the heat generating component, and the fan forms a ventilation interval with the sidewall of the casing; the shell The top wall of the body defines a plurality of air outlets spaced apart in the circumferential direction, and the lower end of the housing defines an air inlet; the air inlet, the ventilation interval and the air outlet form a basin-shaped heat dissipation channel.

Further, the housing includes a fixing ring and an inner base; the fixing ring includes an annular side wall and a plurality of pressing pieces; a plurality of pressing pieces are formed to extend radially from a top edge of the annular side wall; the fixing ring is mounted on the fixing ring An upper end of the inner base; the inner side wall of the base extends vertically upwardly with a plurality of support pieces spaced apart in the circumferential direction; the furnace panel is pressed between the support piece of the inner base and the pressing piece of the fixed ring, the fixing ring The above air outlet is formed between every two adjacent pressing pieces.

Further, the heat generating component comprises a chassis and a heating element, the heating element is mounted on a top wall of the chassis, the bottom wall of the inner base extends vertically upwards with a plurality of supporting columns, and the plurality of supporting columns are spaced along the periphery of the air inlet The outer wall of the top wall of the chassis extends vertically upwards with an annular retaining wall; the chassis is mounted on a plurality of support columns, and the annular retaining wall 4 is connected to the bottom surface of the furnace panel, between the chassis and the furnace panel Form a confined space.

Further, the air inlet is opened in a middle portion of the bottom wall of the inner base, and the fan is located directly above the air inlet.

Further, the heating device further includes a control circuit and a first temperature sensor; the first temperature sensor is configured to detect a peripheral temperature of the heat generating component, and generate a corresponding first temperature signal; the control circuit is configured to use the first temperature The first temperature signal from the sensor Comparing with the preset first temperature threshold signal, when the first temperature signal is smaller than the first temperature threshold signal, the control circuit controls the fan to operate at a rated power, when the first temperature signal is greater than the first The temperature threshold signal, the control circuit controls the fan to operate at full power.

Further, the heating device further includes a control circuit and a load cell mounted outside the bottom wall of the inner base, the load cell is configured to detect the weight of the liquid in a heated container placed on the furnace panel in real time, and Generating a corresponding weight signal; the control circuit is configured to record the weight signal that remains unchanged for a preset time as an unboiling weight signal, and subtract the unboosted weight signal from the subsequent weight signal to obtain an evaporated water vapor weight value. And comparing the evaporated water vapor weight value with a preset evaporation water vapor weight threshold. When the evaporated water vapor weight value is greater than the evaporated water vapor weight threshold, the control thyristor is disconnected, so that a power source stops supplying power. The heating element.

Further, the heating device further includes a circuit board provided with the control circuit, a central portion of the circuit board is provided with a through slot, and a bottom wall of the inner base is embedded in the mounting slot of the circuit board, and the inner base is The air inlet is located in the installation channel.

Further, the heating device further includes a second temperature sensor for detecting a peripheral temperature of the control circuit and the load cell, and correspondingly generating a second temperature signal; the control circuit is further configured to use the second temperature signal and the second temperature The threshold signal is compared, and when the second temperature signal is greater than the second temperature threshold signal, the fan frequency conversion operation is controlled.

Further, the heating device further includes a short-distance wireless communication module connected to the control circuit, and the short-range wireless communication module is configured to wirelessly connect the remote controller of the heating device, the short distance The beneficial effects of the present invention are as follows:

1. In the process of working the fan, the heat dissipating component is always wrapped by the basin-shaped heat dissipating wind screen, and the external airflow enters into the casing from the air inlet of the casing, and is in full contact with the heating component through the ventilation interval. The basin-shaped heat dissipation screen is further formed to take away heat around the heat-generating component through the air outlet, and the heat dissipation effect is good and the efficiency is high. Compared with the traditional direct-blowing cylindrical cooling airflow, the basin-shaped cooling airscreen not only can effectively dissipate heat, but also concentrate heat energy in the middle of the furnace panel to make more efficient use of thermal energy.

2. A closed space is formed between the chassis of the present invention and the furnace panel, so that the heat generated by the heating element can be concentrated as much as possible in the middle of the furnace panel, thereby effectively reducing heat loss to the periphery of the chassis, and reducing The peripheral temperature of the chassis. In addition, the confined space is also waterproof and dustproof, so that the heating element is not affected by moisture and dust entering from the air outlet.

3. The invention detects the peripheral temperature of the heating component, the control circuit and the load cell in real time, thereby realizing intelligent temperature control and heat dissipation, effectively dissipating heat while conserving energy saving, and also prolonging the service life of the control circuit and the load cell.

4. The heating device can automatically recognize the various states of the liquid heating process, and automatically stop the heating when the liquid is heated to the boiling state, which can prevent the water from affecting the water quality due to prolonged boiling, and the measurement is accurate and not easy to misjudge. DRAWINGS

1 is a schematic cross-sectional view showing a preferred embodiment of a heating apparatus of the present invention. 2 is a schematic top plan view of the heating device of FIG. 1. detailed description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. Referring to Figures 1 and 2, the present invention relates to a heating apparatus, the preferred embodiment of which comprises a furnace panel 2, a heat generating component 3, a casing and a fan 5.

The furnace panel 2 is mounted on the casing, and a receiving cavity is formed between the furnace panel 2 and the casing. The heat generating component 3 and the fan 5 are installed in the receiving cavity, and the heat generating component 3 is located below the furnace panel 2. A ventilation interval is formed between the heat generating component 3 and a sidewall of the casing, the fan 5 is spaced below the heat generating component 3, and an air blowing direction of the fan 5 faces the heat generating component 3, the fan 5 and the shell Ventilation spaces are formed between the sidewalls of the body. The top wall of the casing defines a plurality of air outlets 11 spaced apart in the circumferential direction, and the lower end of the casing defines an air inlet. The air inlet, the ventilation interval and the air outlet 11 constitute a basin-shaped heat dissipation passage.

The arrow direction of Fig. 1 illustrates the air flow path in the heating device. When the fan 5 rotates, the external airflow enters the casing from the air inlet of the casing, and passes through the ventilation interval to fully contact the heat generating component 3, thereby forming a basin. The heat dissipating wind screen is used to remove the heat around the heat generating component 3 via the air outlet 11, and the heat dissipating effect is good and the efficiency is high. In addition, the basin-shaped heat dissipation air screen not only achieves effective heat dissipation, but also concentrates heat energy in the middle of the furnace panel 2 to more effectively utilize heat energy. However, the conventional direct-blowing cylindrical heat-dissipating airflow reduces the heating heat while cooling, affecting the heating device.

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In this embodiment, the housing includes a fixed ring 1 and an inner base 4. The retaining ring 1 comprises an annular side wall 13 and a plurality of pressure sheets 14. a plurality of pressing pieces 14 from the top edge of the annular side wall 13 Radial extension is formed. The retaining ring 1 is mounted to the upper end of the inner base 4. The inner side wall of the base 4 extends vertically upwards with a plurality of support pieces 41 spaced apart in the circumferential direction. The furnace panel 2 is pressed between the support piece 41 of the inner base 4 and the pressing piece 14 of the fixed ring 1. The air outlet 11 is formed between each two adjacent pressing pieces 14 of the fixed ring 1.

The heat generating component 3 includes a chassis 31 and a heating element 32 such as a heating wire or an infrared heating lamp. The heating element 32 is mounted on the top wall of the chassis 31. The bottom wall of the inner base 4 extends vertically upwards from a plurality of support columns 48. A plurality of support columns 48 are spaced apart along the circumference of the air inlet 12, and an outer edge of the top wall of the chassis 31 extends vertically upwards with an annular barrier wall 33. The chassis 31 is mounted on a plurality of support columns 48. The annular barrier wall 33 abuts against the bottom surface of the furnace panel 2. The chassis 31 and the furnace panel 2 form a closed space, so that the heat generating component 32 can be generated. The heat is concentrated as much as possible in the middle of the furnace panel 2, effectively reducing the loss of heat to the periphery of the chassis 31, and also lowering the peripheral temperature of the chassis 31. Further, the sealed space is also provided with a waterproof and dustproof function, so that the heat generating component 32 is not affected by moisture and dust entering from the air outlet 11.

The air inlet 12 is defined in a middle portion of the bottom wall of the inner base 4, and the fan 5 is located directly above the air inlet 12. In this way, the outside cold air quickly enters the inner base 4 under the action of the fan 5, surrounds the outer periphery of the chassis 31, and forms a basin-shaped heat dissipation air screen, and the heat of the periphery of the chassis 31 is taken out through the air outlet 11 in all directions. Outside the heating device. That is to say, during the operation of the fan 5, the chassis 31 is kept tightly wrapped by the basin-shaped heat sink, and the heat dissipation effect is excellent.

The heating device further includes a circuit board 6 provided with a control circuit. The middle portion of the circuit board 6 is provided with a mounting slot. The bottom wall of the inner base 4 is embedded in the mounting slot of the circuit board 6. The air inlet 12 of the inner base 4 is located in the installation channel. In this embodiment, the circuit board 6 is located outside the inner base 4, and is isolated from the heat generating component 3, so that the control circuit is not affected by the heat around the heat generating component 3, the operation is more stable, and the control circuit is not affected. The water vapor and dust entering from the air outlet 11 are affected.

The heating device further includes a first temperature sensor mounted to the outer surface of the chassis 31, the first temperature sensor for detecting the peripheral temperature of the heat generating component 3 and generating a corresponding first temperature signal. The control circuit is configured to compare the first temperature signal sent by the first temperature sensor with a preset first temperature threshold signal, and when the first temperature signal is smaller than the first temperature threshold signal, the control circuit The fan 5 is controlled to operate at a rated power. When the first temperature signal is greater than the first temperature threshold signal, the control circuit controls the fan 5 to operate at full power. In this way, intelligent temperature-controlled heat dissipation is realized by detecting the peripheral temperature of the heat-generating component 3 in real time, which is effective for heat dissipation and energy saving.

The heating device further includes a load cell 6 mounted outside the bottom wall of the inner base 4, and the load cell 6 is configured to detect the weight of a liquid placed in the heated container on the furnace panel 2 in real time, and generate corresponding Weight signal. The control circuit is configured to record the weight signal that remains unchanged for a preset time as an unboiling weight signal, and subtract the unboiling weight signal from the subsequent weight signal to obtain an evaporated water vapor weight value, and then evaporate the water vapor The weight value is compared with a preset evaporation water vapor weight threshold. When the evaporated water vapor weight value is greater than the evaporated water vapor weight threshold, the control thyristor is disconnected, so that a power source stops supplying power to the heat generating component 3, , the water boiling can be accurately detected, and the heating can be stopped at the same time to ensure the water quality is excellent. It is common knowledge that when the liquid starts to heat up, the weight of the liquid will remain unchanged for a long period of time due to the lower temperature, and it will be heated to a certain temperature. After that, the water vapor slowly evaporates. At this time, the weight of the liquid will slowly decrease until the liquid is heated to a boiling state. At this time, the water vapor is largely volatilized, and the liquid weight change is greater than the preset threshold, and the power supply can be automatically stopped. Therefore, the heating device can automatically recognize the various states of the liquid heating process, and automatically stop the heating when the liquid is heated to the boiling state, which can prevent the water from affecting the water quality due to boiling for a long time, and the measurement is accurate and difficult to misjudge.

The housing further includes a housing (not shown) and an outer bottom plate mounted under the load cell

9 . The outer casing is sleeved outside the inner base 4 , and the outer bottom plate 9 is mounted on the lower end of the outer casing 9 , and the outer bottom plate 9 defines a plurality of ventilation holes.

The heating device further includes a second temperature sensor mounted on the circuit board for detecting a peripheral temperature of the control circuit and the load cell and correspondingly generating a second temperature signal. The control circuit is further configured to compare the second temperature signal with the second temperature threshold signal, and when the second temperature signal is greater than the second temperature threshold signal, control the fan 5 to perform frequency conversion to ensure the control circuit and The load cell operates at normal temperature, thereby improving the workability and service life of the control circuit and the load cell.

Various other changes and modifications may be made by those skilled in the art in light of the above-described technical solutions and modifications, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

Claim

A heating device, comprising: a furnace panel, a heat generating component, a casing, and a fan;

The furnace panel is mounted on the casing, and a receiving cavity is formed between the furnace panel and the casing, the heating component and the fan are installed in the receiving cavity, the heating component is located below the furnace panel, and the heating component is Forming a ventilation interval between the sidewalls of the casing, the fan spacing is located below the heat generating component, the wind direction of the fan faces the heat generating component, and the fan forms a ventilation interval with the sidewall of the casing; The top wall of the body defines a plurality of air outlets spaced apart in the circumferential direction, and the lower end of the housing defines an air inlet; the air inlet, the ventilation interval and the air outlet form a basin-shaped heat dissipation channel.

2. The heating device according to claim 1, wherein: the housing comprises a fixing ring and an inner base; the fixing ring comprises an annular side wall and a plurality of pressing pieces; and a plurality of pressing pieces are from the top of the annular side wall The rim is formed to extend radially; the fixing ring is mounted on the upper end of the inner base; the inner side wall of the base extends vertically upwardly with a plurality of circumferentially spaced support pieces; the furnace panel is pressed against the support piece of the inner base The air outlet is formed between each two adjacent pressing pieces of the fixing ring between the pressing piece of the fixing ring.

3. The heating device according to claim 2, wherein: the heat generating component comprises a chassis and a heating element, the heating element is mounted on a top wall of the chassis, and a bottom wall of the inner base extends vertically upwards a support column, a plurality of support columns are spaced along the circumference of the air inlet, the outer edge of the top wall of the chassis extends vertically upwards with an annular retaining wall; the chassis is mounted on a plurality of support columns, the annular retaining wall abutting the furnace The bottom surface of the panel forms a closed space between the chassis and the furnace panel.

4. The heating device according to claim 3, wherein: the bottom wall of the inner base The air inlet is opened in the middle, and the fan is located directly above the air inlet.

The heating device according to any one of claims 1 to 4, wherein the heating device further comprises a control circuit and a first temperature sensor; the first temperature sensor is configured to detect an ambient temperature of the heat generating component And generating a corresponding first temperature signal; the control circuit is configured to compare the first temperature signal sent by the first temperature sensor with the preset first temperature threshold signal, when the first temperature signal is less than the first a temperature threshold signal, the control circuit controls the fan to operate at a rated power, and when the first temperature signal is greater than the first temperature threshold signal, the control circuit controls the fan to operate at full power.

6. The heating device according to claim 2, wherein the heating device further comprises a control circuit and a load cell mounted outside the bottom wall of the inner base, the weight sensor for detecting a placement in real time. The weight of the liquid in the container heated on the furnace panel, and generates a corresponding weight signal; the control circuit is used to record the weight signal that remains unchanged for a preset time as an unboiling weight signal, and the unboiling weight signal is followed by The weight signal is subjected to a subtraction operation to obtain an evaporation water vapor weight value, and the evaporated water vapor weight value is compared with a preset evaporation water vapor weight threshold, and when the evaporated water vapor weight value is greater than the evaporated water vapor weight threshold, the control is performed. The thyristor is disconnected such that a power source stops supplying power to the heat generating component.

The heating device according to claim 6, wherein the heating device further comprises a circuit board provided with the control circuit, wherein a central portion of the circuit board is provided with a through slot, and a bottom wall of the inner base is embedded in In the installation slot of the circuit board, the air inlet of the inner base is located in the installation slot.

8. The heating device according to claim 7, wherein the heating device further comprises a second temperature sensor for detecting a peripheral temperature of the control circuit and the load cell, and correspondingly generating a second temperature signal; the control circuit The second temperature signal is further compared with the second temperature threshold signal, and when the second temperature signal is greater than the second temperature threshold signal, the fan frequency conversion operation is controlled. A short-range wireless communication module connected to the control circuit, and a short-distance wireless adaptive signal module for remotely connecting the wireless device to the heating device, the short-range wireless communication module being housed in the casing.