JPH01277168A - Heater - Google Patents

Abstract

PURPOSE:To obtain unchangeable and comfortable environment, by controlling a heating capacity so that the temperature of a temperature detection element in the lower part of a heater may conform to a set temperature of the lower part, the quantity of ventilation so that the temperature of a temperature detection element in the upper part may conform to a set temperature of the temperature in the upper part, and determining a set temperature of two temperature detection elements during the input of sensibility. CONSTITUTION:A blower 3 is mounted on the rear of a heater 1 to circulate hot air. A first temperature detection element 4 is mounted on the lower part of the heater 1 to detect the temperature of air around the lower part of the equipment while a second temperature detection element 5 is mounted on the upper part of the heater 1 to detect the temperature around the upper part of the equipment. A plurality of switching sections 8 which indicate temperature sensibility comprise a switch 16 for 'cold', a switch 17 for 'comfortable', and a switch 18 for 'hot'. The heating capacity is decided so that the output of a first temperature detection element 4 may conform to a first set temperature while the quantity of ventilation is decided so that the output of a second temperature element 5 may conform to a second set temperature. During the input of sensibility, the set temperatures of the two temperature detection elements 4 and 5 are decided. Based on the decided heating capacity, quantity of ventilation and set temperature, the heater is controlled so that less changeable and comfortable environment may be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to forced convection heaters, and particularly to room temperature control that provides a comfortable environment tailored to the user's wishes.

[Prior Art] Room temperature control of a typical heater is often performed using a single temperature detector installed inside the heater.

FIG. 5 is an electrical circuit diagram of a room temperature control section of a conventional heater. In the figure, (1) is a heater, (2) is an operation switch, and (3) is a blower that is attached to the back of the heater (1) and circulates hot air. (4) is a temperature detection element such as a thermistor that detects the indoor temperature, and (6) is an A/V converter that converts the resistance value of temperature detection element (4) into a digital value.
D (analog/digital) converter.

(8) is a plurality of switch sections representing thermal sensation, and as shown in FIG.
). (9) is a microcomputer that functions as a set temperature determining means and an air blowing amount determining means, and an input circuit (10).

CPU (11), memory (12) and output circuit (1
3).

The input circuit (10) includes the input of the switch section (8) and the
The room temperature, which is the output of the temperature detection element (4), is inputted via the /D converter (8). Based on the signal from the output circuit (13), the heating capacity control device (14) controls the heating capacity, and the blower control device (15) controls the air flow rate (rotation speed) of the blower (3) of the heater (1). .

Next, the operation of the above heater will be explained using FIG. 6. FIG. 6 is a flowchart including programs for determining the set temperature, heating capacity determination, and air blowing amount stored in the memory (12) of the microcomputer (9).

First, when the operation switch (2) is turned on, the flow shown in FIG. 6 starts. In step (8101), the room temperature (Tr) detected by the temperature detection element (4) is input, and in step (S102), the presence or absence of sensory input is checked, and if there is sensory input, the process advances to step (8103). Steps (8103) to (8106) are the flow as a set temperature determining means, and step (S102)
), when there is no sensory input, this flow is skipped and the flow proceeds to step (S107) as a means for determining the heating capacity and the amount of air blown.

When it is determined by the sensory input in step (S103) that it is "cold", the set temperature is increased by a degree, for example, 2 [deg c], based on the room temperature at that time in step (sto4).
Determine the new set temperature (Tc mTr +a). Similarly, if it is determined by the sensory input in step (S103) that it is hot, then in step (9108) the set temperature is lowered by a degree with respect to the room temperature at that time and a new set temperature is determined (T
c -Tr-a)O Also, if the sensory input is determined to be "comfortable" in step (8103), step (8105)
Make the set temperature equal to room temperature and determine the new set temperature (
Te-Tr).

In step (SiO2), the temperature difference between the new set temperature and the room temperature is calculated (ΔT-Tc-Tr), and in step (810g), the heating capacity is determined, and operation is performed. The heating capacity is determined by the difference between the set temperature and the room temperature; if the difference is large, the heating capacity will be large, and if the difference is small, the heating capacity will be small.

For example, when the room temperature becomes higher than the set temperature, the device is turned off and controlled so that the room temperature becomes equal to the set temperature. Furthermore, the amount of air blown is determined in step (8109) so as to be proportional to the heating capacity as shown in FIG. When the room temperature approaches the set temperature, the amount of air blown is controlled to decrease. This can be thought of as minimizing the feeling of airflow in the room, and also keeping the blowing temperature constant.

This allows the environment to be controlled so that the set temperature and room temperature are equal while changing heating capacity and air flow.

[Problems to be solved by the invention] Conventional heaters receive the user's sensory input as described above,
As a result, the room temperature was controlled by changing the set temperature and controlling the blower on and off while changing the heating capacity.

By the way, the purpose of using a heater is to make people living indoors comfortable. The sensation of a person living indoors is largely determined by the temperature at their feet and the temperature at their head. Due to the difference in the specific weight of the air, the temperature distribution between the top and bottom of the room during heating is higher at the top and lower at the bottom and floor.

This vertical temperature distribution is determined by the agitation force caused by the air blowing from the heater 1-. That is, as the amount of air blown increases, the vertical temperature distribution becomes smaller, and as the amount of air blown decreases, the vertical temperature distribution increases.

Furthermore, the vertical temperature distribution is influenced by the outside temperature. That is, as the outside air temperature increases, the vertical temperature distribution becomes smaller, and as the outside air temperature decreases, the vertical temperature distribution increases.

However, the air flow rate of conventional heaters depends on the heating capacity and is determined depending on the temperature difference between the room temperature and the set temperature. was. As a result, when the outside temperature changes or when the amount of air blown changes during sensory input or due to a change in room temperature, the occupants feel a change in the environment and feel uncomfortable.

This invention was made in order to solve the above-mentioned problem.When the outside temperature changes or when sensory input is performed, environmental changes may be felt. The purpose of the present invention is to provide a heating device that can create a ring t, , = l that suits the user's preference.

[Means for Solving the Problems] A heater according to the present invention includes a sensory input means for indicating hotness, coldness, etc., a first temperature detection element attached to the bottom of the device, and a second temperature detection element attached to the top of the device. It has a temperature detection element.

Further, heating capacity determining means determines the heating capacity based on the difference between the output of the first temperature detection element and the first set temperature, and the heating capacity is determined based on the difference between the output of the first temperature detection element and the first set temperature. heating capacity determination means, and an output of the second temperature detection element based on the output of the first temperature detection element, the first set temperature, the output of the second temperature detection element, and the second set temperature lower than the first set temperature. It has an air flow rate determining means that determines the air flow rate so that the air flow rate matches the second set temperature, and a set temperature determining means that changes the first set temperature and the second set temperature based on input from the sensory input means.

[Function] In this invention, the first
Determining the heating capacity so that the output of the temperature detection element becomes the first set temperature, determining the air flow rate so that the output of the second temperature detection element attached to the upper part of the heater becomes the second set temperature, Furthermore, the set temperature of the two temperature detection elements (
the first set temperature and the second set temperature). By performing control based on the heating capacity, air flow rate, and set temperature determined here, a comfortable environment that meets the resident's preferences and that does not change easily can be obtained.

[Example 7] Examples of the heater of the present invention will be described below. FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, FIG. 2 is a flowchart showing a control method thereof, and FIG. 3 is a characteristic diagram of air flow control. The thermal sensation switch section (8) is the same as that shown in FIG. 8, so its description will be omitted.

In Figure 1, (1) is a heater, (2) is an operation switch, (3) is a blower that is attached to the back of the heater (1) and circulates hot air, and (4) is a thermistor. The first temperature detection element is attached to the bottom of the heater (1) and detects the air temperature near the bottom of the device.The first temperature detection element (5) is a thermistor etc. and is attached to the top of the heater (1) to detect the air temperature near the top of the device. This is a second temperature detection element that detects temperature.

Note that this first temperature detection element (4) is placed at a height of 30 to 15 mm from the floor.
By installing it in a position within the range of 0 [ma+], the first
The temperature detected by the temperature detection element (4) has a correlation with the air temperature near the floor in the lower part of the room, and the temperature detected by the second temperature detection element (5)
) is installed at a position of 300 [mi] or more from the floor.We have confirmed through detailed measurements that the temperature detected by the second temperature detection element (5) is correlated with the air temperature in the upper part of the room. Therefore, it can be said that the temperature detected by the first temperature detection element (4) is the air temperature in the lower part of the room, and the temperature detected by the second temperature detection element (5) is the air temperature in the upper part of the room.

(6) is an A/D (analog/digital) converter that converts the resistance value of the first temperature detection element (4) into a digital value;
7) is an A/D converter that converts the resistance value of the second temperature detection element (5) into a digital value, and 8) is a plurality of switch units that express thermal sensations, as shown in FIG. when it's cold 2
Switch (IB), “Comfortable 2 Switch (17),”
It consists of a switch (18) when it is hot.

(9) is a microcomputer that functions as a heating capacity determining means, an air blowing amount determining means, and a set temperature determining means, and includes an input circuit (1o), a CPU (11), a memory (12), and an output circuit (■3 )have. The input circuit (10) receives the input of the switch section (8), the output of the first temperature detection element (4) which is the temperature of the upper part of the room via the A/D converter (7), and the A/D The output of the second temperature detection element (5), which is the temperature of the lower part of the room, is inputted via the converter (7). A heating capacity control device (14) controls the heating capacity based on a signal from the output circuit (13), and a blower control device (15) controls the air blower (3) of the heater (1) based on a signal from the output circuit (13). Controls the air flow rate (rotation speed).

Next, the operation of the above embodiment will be explained using FIG. 2. FIG. 2 is a flowchart including a program for determining the set temperature, heating capacity, and air flow amount stored in the memory (12) of the microcomputer (9).

First, when the operation switch (2) is turned on, the flow shown in FIG. 2 starts. The temperature at the bottom of the device detected by the first temperature detection element (4) in step (8001)
Detected temperature) is read, and in step (9002) the temperature at the top of the device (second detected temperature) detected by the second temperature detection element (5) is read, and then in step (sooa)
to check for the presence or absence of sensory input.

If there is sensory input, proceed to step (SOO4).

Step (8004) to step (SOIO) is a flow as a set temperature determination means, and step (SOIO) is a flow as a set temperature determination means.
If it is determined in O3) that there is no sensory input, this flow is skipped and the flow proceeds to step (SOIL) as a heating capacity determining means and an air blowing amount determining means.

In step (SOO4), the type of sensory input is determined, and when the sensory input is "cold", in step (SOO5), the first set temperature is set by a degree, for example, 2 degrees, based on the first detected temperature (TI) at that time. [Determine a new first set temperature by increasing deg cl (Tlc-TI +a). Step (S.O.
I) In step 6), the current first set temperature (Tlc) and the temperature difference between the first set temperature and the second set temperature are added to determine a new second set temperature (Tuc-Tlc+b).

When the sensory input is "comfortable", in step (SOO7) a new first set temperature (
(Tlc-TI). Next, in step (SOa8), determine a new second set temperature (Tuc) that is equal to the second detected temperature (Tu) at that time.
u), new second set temperature (Tuc) and new first set temperature (
Tlc) is set as the new temperature difference between the first set temperature and the second set temperature (b-Tue-Tlc).

Step (SOO9) when sensory input is 0 “When it’s hot”
The first set temperature is lowered by a degree, for example, 2[deg cl], based on the first detected temperature (T1) at that time, and a new first set temperature (Tlc) is determined (Tl(!-TI-a).
). At the step (SOLO), the first set temperature (T
lc) and the temperature difference between the first set temperature and the second set temperature to determine a new second set temperature (Tuc).
=TIc+b).

Next, in step (SOII), the first set temperature (Tlc) of the lower part of the room and the first temperature that is the output of the first temperature detection element (5) are set.
Calculate the temperature difference (ΔTl) from the detected temperature (T1).
l-Tie-TI), the heating capacity is determined and operated based on this temperature difference (ΔTl) in step (SO12). In step (SOI3), the second set temperature for the upper part of the room (
T uc) and the second temperature detection element (5) which is the output of the first temperature detection element (5).
Calculate the temperature difference (ΔTu) from the detected temperature (Tu) (
ΔTu=Tuc−Tu).

If the first detected temperature is higher than the first set temperature (ΔTl <0) in step (8014), the low air volume operation shown in FIG. 3 is performed in step (SOIB). Step (8014)
The first detected temperature is 1 [deg c] lower than the first set temperature.
or lower (ΔTl > 1), step (8017
) to perform high air volume operation as shown in Figure 3. When the first detected temperature is lower than the first set temperature and the difference is within 1 [deg c] (1≧ΔT1≧0), the process proceeds to step (SOI5).

In step (SOI5), when the difference between the second set temperature and the second detected temperature is ΔTu≧0, that is, when ΔTu is negative including zero, in step (SolB), the low air volume operation shown in FIG. 3 is performed.
When the temperature difference is positive with ΔTu>0, step (!3017
) to perform high air volume operation as shown in Figure 3.

The air flow characteristic diagram shown in Figure 3 shows the relationship between air flow and heating capacity.Heating capacity and air flow are determined by reducing the air volume when the heating capacity is low and increasing the air volume when the heating capacity is large. There is a relationship between them.

Therefore, the high air volume operation shown in FIG. 3 means that the air volume is increased to a large extent, which improves the indoor environment shaping ability, reduces the indoor vertical temperature distribution, and improves the environment. Moreover, the low air volume operation shown in FIG. 3 means that the air volume is reduced to a small extent, and the indoor noise is also reduced and the feeling of air flow is also reduced.

The operating status of the heater configured as above is described in the fourth section.
This will be explained using figures.

FIG. 4 is a characteristic diagram of room temperature change, air volume, and heating capacity when heating operation is performed based on this embodiment. Figure 4 shows the start-up situation, when the "when cold" switch (technique 6) is pressed,
“Comfortable” when the “hot weather” switch (18) is pressed
Each case is shown when the switch (17) is pressed.

At startup, operation is started with the first set temperature and the second set temperature as targets. When the first detected temperature is lower than the first set temperature and the difference exceeds 1 [deg cl (ΔTl > 1)
is a high air volume operation (SOI4.8O17).

This high air volume operation is preferable to quickly raise the room temperature. Eventually, when the first detected temperature approaches the first set temperature, the heating capacity is reduced by the heating capacity control device (14), and the difference between the first set temperature and the first detected temperature becomes 1[deg cl or less] When the second detected temperature is lower than the second set temperature, the blower control device (15) operates at a high air volume (SO15,
8O17). When the second detected temperature does not reach the second set temperature and ΔTu>0, high air volume operation is continued.

Furthermore, when the second detected temperature becomes higher than the second set temperature, low air volume operation occurs (SO15, 5O17). And the second
When the detected temperature falls and becomes equal to or lower than the second set temperature again, high air volume operation is started (SO15, 5O17).

When operating at full speed with low wind, the user can press the “Cold” switch (16
), the first set temperature is changed from the first detected temperature by, for example, 2
[deg cl set to high temperature (80 inches), 2nd
The set temperature is set by adding the first set temperature and the difference between the first set temperature and the second set temperature (sooa
). As a result, the temperature difference between the first detected temperature and the first set temperature increases, so the heating capacity is increased by the heating capacity control device (14) (SOII, 9012).

The first detected temperature is lower than the first set temperature and the temperature difference is 1
When [deg e] is exceeded, the blower control device (15) causes high air volume operation (SO14, 8O17). After this,
The respective temperatures rise, but the situation is similar to that at startup.

“When the user is hot” switch (18) during low air volume operation
When you press , the first set temperature changes from the first detected temperature by, for example, 2
[deg e] is set to a low temperature (8009), and the second
The set temperature is set by adding the first set temperature and the difference between the first set temperature and the second set temperature (SOIO)
. At this time, the first detected temperature becomes higher than the first set temperature, so the heating capacity is reduced or the operation is stopped by the heating capacity control device (14) (S011.5O12). As a result, the first detected temperature approaches the first set temperature, but the low air volume operation continues as long as the first detected temperature is higher than the first set temperature (SO14, 5olB).

If the high air volume operation was in progress when the "hot weather" switch (18) was pressed, the low air volume operation would immediately occur. As shown in Figure 4, after low air volume operation is started, if the second detected temperature becomes higher than the second set temperature due to outside temperature or other conditions, low air volume operation will occur, and the second detected temperature will be lower than or equal to the second set temperature. When it becomes high air volume operation again (S015.5O
18,8017).

When the user presses the "comfort" switch (17) during low air volume operation, the first set temperature and the second set temperature become equal to the first detected temperature and the second detected temperature at that time, respectively. at the same time,
A new temperature difference between the first set temperature and the second set temperature is set from this first set temperature and second set temperature (SOO7,
5OO8). There is no change in the heating capacity or airflow volume, but from now on, the heating capacity and airflow volume are set based on the temperature difference between the top and bottom of the room at that time, so the environment where the "comfort" switch (17) is pressed is maintained. It turns out.

In addition, although the above embodiment describes the case where the air flow rate is set in two stages, it may be multi-staged with three or more stages, and the heating heat source may be any of a refrigeration cycle type, an electric type, or a combustion type. A similar effect can be obtained.

[Effects of the Invention] As described above, according to the present invention, the heating capacity is controlled so that the temperature of the temperature detection element attached to the lower part of the heater becomes the set temperature of the lower part, and By controlling the air flow so that the temperature of the installed temperature detection element matches the set temperature of the upper part, and determining the set temperature of the two temperature detection elements at the time of sensory input, it can be adjusted to suit the resident's preference and changeable. 1 to 4 show an embodiment of this invention,
FIG. 1 is an electric circuit diagram of the heater, FIG. 2 is a flowchart thereof, FIG. 3 is a blowing characteristic diagram, and FIG. 4 is a time chart explaining the operation.

5 and 7 show an example of a conventional heating machine, FIG. 5 is its electric circuit diagram, FIG. 6 is its flowchart, and FIG.
The figure is a diagram of air blowing characteristics.

FIG. 8 is a configuration diagram of the thermal sensation switch section.

In the figure, (3) is a blower, (4) is a temperature detection element,
(5) is a temperature detection element, (8) is a thermal sensation switch section,
(9) is a microcomputer having functions as a set temperature determining means, an air blowing amount determining means, and a heating capacity determining means.

Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] Sensory input means for hot, cold, etc.; a first temperature detection element attached to the bottom of the device; a second temperature detection element attached to the top of the device; and the first temperature detection element. heating capacity determining means for determining the heating capacity based on the difference between the output of the first temperature detecting element and the first set temperature; Based on the second set temperature,
an air blowing amount determining means for determining an air blowing amount so that the output of the second temperature detection element and the second set temperature match; A heating machine characterized by comprising: means for determining a set temperature to be changed.