JP2507850B2 - Heat pump heating system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump type heating device, and more particularly, a desired room temperature can be automatically set by a scheduled time even if the heat pump capacity is lowered due to a decrease in outside air temperature. The present invention relates to a heating device that saves energy.

[0002]

2. Description of the Related Art A heat pump type heating device is a device for heating a room by discharging heat into the room while exchanging heat with the outside air. Normally, the heating device is equipped with a timer mechanism that automatically issues an operation start command, and by setting this timer mechanism a few hours before the wake-up time (scheduled time), the time to wake up in the morning is set. In addition, the room is warmed up to a predetermined temperature.

[0003]

However, even if the heating operation is performed several hours before the scheduled time, the room may not be warmed. As a cause of this, firstly, there is a case where the heating operation time is insufficient because the room temperature before heating is extremely lowered and is raised to a desired room temperature at a scheduled time. Also,
The second cause is that the heating capacity of the heat pump is significantly reduced due to the extreme decrease in the outside air temperature, and the indoor heating cannot be performed sufficiently. Further, there are cases where the indoor temperature is extremely decreased and the heat pump heating capacity is decreased due to the decrease of the outside air temperature, that is, the synergistic action of the first and second causes.

As described above, in the conventional heat pump type heating device, even if the device is simply operated several hours before the scheduled time, the heat pump capacity may decrease due to the decrease in the outside air temperature. In some cases, the amount of heat required for indoor heating (hereinafter, referred to as heating load heat amount) must be increased due to the decrease in indoor temperature. Therefore, it is not easy to bring the room to the desired room set temperature at the scheduled time, and an automated heat pump heating device has not been obtained.

The present invention has been made in view of the above circumstances, and provides a heat pump type heating device which can automatically bring a room to a desired room set temperature at a scheduled time and further contribute to energy saving. The purpose is to provide.

[0006]

A heat pump type heating device according to claim 1 of the present invention includes a heat pump portion for performing indoor heating by releasing heat quantity into a room while absorbing heat quantity by heat exchange with outside air, and a heat pump. The controller is provided with a control unit for issuing an operation command to the unit, and an indoor temperature sensor for sending the temporal change data of the indoor temperature to the control unit. And
The control unit has an input means for inputting a desired indoor set temperature and a scheduled time, and a scheduled time based on previously measured indoor temperature change data of the indoor temperature and average outside air temperature change data. Temperature predicting means that predicts the indoor temperature and the outside air temperature that have dropped to the heating temperature, the heating load calorie required to perform indoor heating to the indoor set temperature from the provisional heating start time to the scheduled time, and the lowered outside air temperature The heat pump capacity corresponding to the above is calculated, the heating load heat quantity and the heat pump capacity are compared, and the time setting means for setting the operation start time and the heating start time based on the comparison result, and the operation start time is reached. And a timer means for starting the operation of the heat pump unit at the specified time and starting the indoor heating of the heat pump unit at the time when the heating start time is reached. Preparative a device according to claim.

The heat pump type heating device according to a second aspect is the device according to the first aspect, wherein the control device is provided with a driving learning function for accumulating past operation data.
Then, from the past operation data accumulated in the operation learning function, operation data in which the time when the indoor temperature actually reaches the scheduled time is approximated is extracted, and the temporary heating is performed from the operation data. The device is characterized in that the start time is calculated and sent to the time setting means.

[0008]

According to the heat pump type heating device of the first aspect of the present invention, the predicted time is based on the temporal change data of the indoor temperature previously measured by the temperature predicting means and the average temporal change data of the outside air temperature. It is predicted that the room temperature and the outside air temperature will have dropped.

Then, the time setting means calculates the heating load heat amount required to perform the indoor heating to the desired indoor set temperature from the tentative heating start time to the scheduled time and the heat pump capacity corresponding to the lowered outside air temperature. At the same time, the heating load heat quantity and the heat pump capacity are compared, and the operation start time and the heating start time are set based on the comparison result.

Further, the timer means starts the operation of the heat pump unit at the time when the operation start time is reached, and starts the indoor heating of the heat pump unit at the time when the heating start time is reached.

Thus, an automated heating device can be provided which is not affected by changes in the temperature of the room and outside air and can bring the room to a desired room set temperature at the scheduled time. Further, since the indoor temperature does not reach the indoor set temperature at a time extremely earlier than the scheduled time, the heat pump unit can be efficiently operated.

Further, according to the heat pump type heating device of the second aspect, the provisional heating start time required for calculating the heating load heat quantity is included in the past operation data accumulated in the operation learning function. From this, operation data in which the time when the temperature actually reaches the indoor set temperature is close to the scheduled time is extracted, and the temporary heating start time is calculated from the operation data. Therefore, as the accumulated amount of past operation data increases, the operation start time and the heating start time become highly reliable values.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioner and its operation control method according to the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 1 is a heat pump unit. In this heat pump unit 1, an evaporator 3 is installed outside the room 2 and a radiator 5 is installed inside the room 4, and the heat medium compressed by the compressor 6 is in the route of the evaporator 3 and the radiator 5. It circulates. The heat dissipation operation of the radiator 5 heats the room, and the evaporator 3 exchanges heat with the outside air (heat absorption operation). In addition, the heat pump unit 1 starts indoor heating (hereinafter, referred to as operation start time J1) after a predetermined time (several minutes) (hereinafter, referred to as operation start time J1).
The heating start time is J2).

An indoor temperature sensor 10 is arranged in the room 4. Then, the indoor temperature obtained from the indoor temperature sensor 10 is transmitted to the temperature data storage unit 12 of the control unit 11.

The control unit 11 is a device for issuing an operation command to the heat pump unit 1.

The control unit 11 will be described with reference to the functional block diagram shown in FIG. The control unit of this embodiment includes a temperature data storage unit 12, a temperature prediction unit 13, a heat pump performance storage unit 14, an input unit 15, and a time setting unit 16.
And a timer means 17 and a driving learning function 18.

The temperature data storage unit 12 stores an outside air temperature storage unit 12a in which the outside air temperature for a predetermined period (for example, one year) is stored, and a room temperature storage in which the indoor temperature sensor 10 obtains indoor temperature data in a predetermined time period. And a part 12b. Specifically explaining the data contents of the room temperature storage unit 12b and the outside air temperature storage unit 12a, the room temperature storage unit 12b, as shown in FIG. 5, the heating time zone of the heat pump unit 1 (in the figure, from 20:00 to 22:00 Temperature data (a portion indicated by a solid line) from a time zone) to a predetermined time (a time zone of 2:00 in the drawing) after the heating is stopped is stored in the room temperature sensor 10. The outside temperature storage unit 12a is
As shown in FIG. 6, the average outside air temperature on a daily basis for a certain period is stored.

The temperature predicting means 13 is means for predicting the indoor temperature and the outside air temperature at a predetermined time. That is, in order to predict the room temperature, 22 read from the room temperature storage unit 12b is used.
Based on the indoor temperature from 2:00 to 2:00 (the part indicated by the solid line), the expected descent curve until 8:00 (the part indicated by the dotted line) is calculated. In order to predict the outside air temperature, the outside air temperature at a predetermined time is predicted by directly reading a numerical value from the outside air temperature storage unit 12a.

The heat pump performance storage unit 14 stores the performance curve of the heat pump unit 1 shown in FIG. 7, that is, the heating capacity value of the heat pump unit 1 corresponding to a predetermined outside air temperature.

The input means 15 is for setting the operating conditions of the present heating apparatus, and inputs the desired indoor set temperature Ts and the scheduled time Js (for example, wake-up time) at which the room 4 should reach the indoor set temperature Ts. To be done. Only when the heating device is started up, the provisional heating start time J is input from the input means 15.
k is input.

The time setting means 16 is means for determining the operation start time J1 of the heat pump unit 1 and the heating start time J2.

The timer means 17 receives the signals of the operation start time J1 and the heating start time J2 from the time setting means 16,
An operation start command is sent to the heat pump unit 1 when the operation start time J1 is reached, and a heating start command is sent to the heat pump unit 1 when the heating start time J2 is reached.

Further, the operation learning function 18 has a history information storage section 18a in which the past data of the daily heating operation result is accumulated, and the past data is set to the room temperature T at the scheduled time Js.
error judgment circuit 18b for judging whether or not it has reached s
It consists of and. The history information storage unit 18a stores the scheduled time Jsa, the operation start time J1a, the heating start time J2a, the time when the indoor set temperature Tsa is actually reached (hereinafter referred to as the temperature arrival time) Jra, and the heating start time J2a. A plurality of past data such as is accumulated for each date.

Further, the error judgment circuit 18b uses the data in the history information storage section 18a to calculate the scheduled time Js at the present time.
And the temperature reaching time Jra are approximated, and the heating start time J1a is calculated as approximate time data K from the data. Then, the approximate time data K is set as the temporary heating start time Jk by the time setting means 16
It is designed to be input to.

Next, the operation procedure of the heating device having the above-mentioned configuration will be described.
This will be described using the flowcharts shown in FIGS. 3 and 4. It is assumed that the heat pump unit 1 has already been heated indoors, and the temperature data storage unit 12 has been supplied with temporal change data from the indoor temperature sensor 10.

Step SP1 The input means 15 is used to set the room temperature Ts and the scheduled time Js.
Enter These pieces of information are sent to the time setting means 16.

Step SP2 It is determined whether or not the apparatus is starting up. Then, at the time of rising, the provisional heating start time Jk is input to the time setting means 16 from the input means 15. If the apparatus is not at the start-up, the process proceeds to step SP3.

Step SP3 The indoor heating of the heat pump unit 1 is stopped.

Step SP4 Based on the indoor and outdoor temperature data obtained by the temperature data storage unit 12, the temperature predicting means 13 causes the indoor temperature obtained from the indoor temperature sensor 10 (the portion indicated by the solid line) to be as shown in FIG. ) Is used to obtain an expected descent curve (portion indicated by a dotted line) up to the scheduled time Js.

Step SP5 It is determined whether or not the apparatus is starting up. Then, when it is not the rising time, the approximate time data K obtained by the driving learning function 18 is input to the time setting means 16 as the temporary heating start time Jk. In the case of rising, the process proceeds to step SP6.

Step SP6 The time setting means 16 obtains the room temperature Tc at the scheduled time Js from the predicted interior descent curve obtained from the temperature predicting means 13, and at the same time stores the previously stored room volume and temporary heating start time Jk. , The heating load calorie S1 required for heating the room 4 from the room temperature Tc to the room set temperature Ts (the hatched portion in FIG. 5) is calculated.

Step SP7 The time setting means 16 obtains the outdoor temperature at the temporary heating start time Jk and the outdoor temperature at the scheduled time Js from the temperature predicting means 13. Then, from the data obtained from the heat pump performance storage unit 14, the provisional heating start time Jk to the scheduled time J
Calculate heat pump capacity S2 up to s

Step SP8 The time setting means 16 compares the heating load heat quantity S1 with the heat pump capacity S2. As a result of this comparison, the heating load calorie S1 is larger than the heat pump capacity S2 (If the heating start time Jk remains as it is, the indoor 4
Does not reach the indoor set temperature Ts), the provisional heating start time Jk is corrected to an earlier time. If the heating load calorie S1 is smaller than the heat pump capacity S2 (if the provisional heating start time Jk remains, the room 4 reaches the indoor set temperature Ts before the scheduled time Js), the provisional heating start time Correct Jk to a later time.

Step SP9 When the heating load heat amount S1 and the heat pump capacity S2 are set to the same numerical value by the correction of the provisional heating start time Jk,
The temporary heating start time Jk of the correction result is set as the heating start time J2. Then, the operation start time J1 is set a predetermined time before the heating start time J2. Further, the operation start time J1 and the heating start time J2 calculated by the time setting means 16 are input to the timer means 17.

Step SP10 The timer means 17 measures the elapse of the operation start time J1 based on the signal from the time setting means 16.

Step SP11 The operation of the heat pump section 1 is started based on the operation start signal from the time setting means 16.

Step SP12 The timer means 17 measures the elapse of the heating start time J2 based on the signal from the time setting means 16.

Step SP13 The heating of the heat pump unit 1 is started based on the heating start signal from the time setting means 16.

The heating device of this embodiment which operates according to the above procedure can obtain the operation result as shown in FIG. That is,
Even if the room temperature and the outside air temperature change, the room 4 reaches the room set temperature Ts at the time when the approximate scheduled time Js is reached.

As described above, according to the heat pump type heating device of the present embodiment, the indoor and outdoor air temperatures obtained from the temperature data storage unit 12 and the heat pump capacity corresponding to the outdoor air temperature obtained from the heat pump performance storage unit 14, The time setting means 16 can set an appropriate operation start time J1 and heating start time J2 by the temperature prediction of the indoor air and the outdoor air obtained from the temperature prediction means 13, and the timer means 17 can send an instruction to the heat pump unit 1. Therefore, when the approximate scheduled time Js is reached, the room temperature Ts of the room 4 can be set. Therefore, unlike the conventional case, the room does not reach the room set temperature Ts at a time extremely later than the scheduled time, and a comfortable room temperature can always be obtained.

Further, since the indoor set temperature Ts is not reached at a time extremely earlier than the scheduled time, the heat pump unit 1
Can be operated efficiently, and thereby an energy-saving heating device can be provided.

Further, since the provisional heating start time Jk is determined by judging the contents of the past operation data accumulated in the history information storage unit 18a of the driving learning function 18, the temporary operation start time Jk is stored in the history information storage unit 18a. As the accumulated amount increases, the operation start time J set by the time setting means 16
1 and the heating start time J2 are highly reliable values, whereby a high-performance heat pump type heating device can be obtained.

[0044]

As described above, according to the first aspect of the present invention.
According to the described heat pump type heating device, the following effects can be obtained.

First, the indoor temperature and the outside air temperature lowered by the scheduled time are predicted on the basis of the previously measured data of the indoor temperature over time and the average data of the outside air temperature over time. , Calculates the heating load heat quantity required to perform indoor heating to the desired indoor set temperature from the provisional heating start time to the scheduled time and the heat pump capacity corresponding to the lowered outside air temperature, and the heating load heat quantity and heat pump The capacity is compared, and the operation start time and the heating start time are set based on the comparison result, and the operation of the heat pump unit is started at the time when the operation start time is reached, and at the time when the heating start time is reached. By starting the indoor heating of the heat pump section, the room will be set to the desired room temperature at the scheduled time without being affected by changes in the room and outside air temperatures. It automated heat pump heating device is provided can, by operating the heating system, it is possible to obtain the environmental indoor environment.

Secondly, since the indoor temperature does not reach the indoor set temperature extremely earlier than the scheduled time, the heat pump unit can be operated efficiently, thereby providing an energy-saving heat pump type heating device. You can

Further, according to the heat pump type heating device of the second aspect, the provisional heating start time required for calculating the heating load heat amount is included in the past operation data accumulated in the operation learning function. From, extract the operation data that the time when the temperature actually reached the indoor set temperature and the scheduled time are similar,
Since the tentative heating start time is calculated from the operation data, the accumulated operation amount of the past operation data increases, so that the operation start time and the heating start time become highly reliable values. You can get a heating system.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a heat pump type heating device of the present invention.

FIG. 2 is a block diagram showing a configuration of a control unit of the present invention.

FIG. 3 is a first half of a flowchart showing an operation procedure of the heat pump type heating device of the present invention.

FIG. 4 is the second half of the flowchart showing the operating procedure of the heat pump type heating device of the present invention.

FIG. 5 is a diagram showing an indoor temperature measured and a predicted indoor temperature as time changes.

FIG. 6 is a diagram showing an outside air temperature corresponding to time.

FIG. 7 is a diagram showing the capability of the heat pump unit corresponding to the outside air temperature.

[Fig. 8] Fig. 8 is a diagram showing the indoor temperature results of operation of the heat pump heating device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 heat pump part 2 outdoor 10 indoor temperature sensor 11 control part 12 temperature data storage part 13 temperature prediction means 14 heat pump performance storage part 15 input means 16 time setting means 17 timer means 18 operation learning function J1 operation start time J2 heating start time Jk temporary Heating start time Jr Temperature arrival time Js Scheduled time Ts Room set temperature

Claims (2)

(57) [Claims] 1. A heat pump unit for heating a room by releasing the amount of heat into the room while absorbing the amount of heat by exchanging heat with the outside air, a controller for issuing an operation command to the heat pump unit, and a controller for controlling an indoor temperature to the controller. An indoor temperature sensor that sends time-dependent change data is provided, and the control unit has input means for inputting a desired room set temperature and a scheduled time, and time-dependent change data of the room temperature measured in advance, Temperature predicting means for predicting the indoor temperature and the outside air temperature that will decrease by the scheduled time based on the average time-dependent change data of the outside air temperature, and the indoor preset temperature from the temporary heating start time to the scheduled time. Calculate the heating load heat quantity required for indoor heating and the heat pump capacity corresponding to the lowered outside air temperature, and compare the heating load heat quantity and the heat pump capacity. And, the time setting means for setting the operation start time and the heating start time based on the comparison result, and the operation of the heat pump unit is started at the time when the operation start time is reached, and the time when the heating start time is reached. And a timer means for starting the indoor heating of the heat pump section. 2. The control device is provided with a driving learning function for accumulating past driving data, and the indoor set temperature is actually reached from the past driving data accumulated in the driving learning function. The operation data in which the time and the scheduled time are similar to each other are extracted, the temporary heating start time is calculated from the operation data, and the temporary heating start time is sent to the time setting means. Heat pump type heating system.