JP2001296049A - Hot water feeder device - Google Patents

Hot water feeder device

Info

Publication number
JP2001296049A
JP2001296049A JP2000110151A JP2000110151A JP2001296049A JP 2001296049 A JP2001296049 A JP 2001296049A JP 2000110151 A JP2000110151 A JP 2000110151A JP 2000110151 A JP2000110151 A JP 2000110151A JP 2001296049 A JP2001296049 A JP 2001296049A
Authority
JP
Japan
Prior art keywords
hot water
operation
operation mode
hot
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000110151A
Other languages
Japanese (ja)
Other versions
JP4169452B2 (en
Inventor
Kenji Dangishiyo
Yasushi Fujikawa
Yoshio Fujimoto
Toru Fukuchi
Yasuto Hashizume
Mikio Ito
Toshihiro Kawachi
Michinori Kawahara
Hisashige Sakai
Tomoya Sakiishi
Kenichi Tanogashira
Kazuya Yamaguchi
Naoji Yotsuya
実希夫 伊藤
和也 山口
智也 崎石
道憲 川原
康人 橋詰
河内  敏弘
健一 田之頭
徹 福知
直司 肆矢
泰 藤川
藤本  善夫
謙治 談議所
寿成 酒井
Original Assignee
Harman Co Ltd
Osaka Gas Co Ltd
Seibu Gas Co Ltd
Toho Gas Co Ltd
Tokyo Gas Co Ltd
大阪瓦斯株式会社
東京瓦斯株式会社
東邦瓦斯株式会社
株式会社ハーマン
西部瓦斯株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harman Co Ltd, Osaka Gas Co Ltd, Seibu Gas Co Ltd, Toho Gas Co Ltd, Tokyo Gas Co Ltd, 大阪瓦斯株式会社, 東京瓦斯株式会社, 東邦瓦斯株式会社, 株式会社ハーマン, 西部瓦斯株式会社 filed Critical Harman Co Ltd
Priority to JP2000110151A priority Critical patent/JP4169452B2/en
Publication of JP2001296049A publication Critical patent/JP2001296049A/en
Application granted granted Critical
Publication of JP4169452B2 publication Critical patent/JP4169452B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Abstract

(57) [Summary] To provide a hot water supply device that can be operated in an operation mode that can respond to a user's request among a plurality of types of operation modes. SOLUTION: Each of a plurality of hot and cold water heating means 33, 34, 35 is configured to be in an operation start allowable state when an operation start condition set in advance corresponding to each of the plurality of hot water heaters 33, 34, 35 is satisfied. Of the hot and cold water heating means 33, 34, 35,
An operation mode display is provided for displaying an executable operation mode among a plurality of types of operation modes based on the hot water supply means in the operation start allowable state, and the operation mode displayed on the operation mode display is provided. Operation mode selecting means for artificially selecting one of them is provided, and the operation control means U operates the plurality of hot and cold water heating means 33, 34, 35 in the operation mode selected by the operation mode selecting means. A hot water supply device configured to cause the hot water supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a heat-exchange type hot / cold water heating means provided to heat hot / cold water flowing through a hot / cold water flow passage. Operation control means for controlling the operation of the plurality of hot and cold water heating means is provided so as to be in a state, and the operation control means
The present invention relates to a hot water supply apparatus in which, among the plurality of hot water heaters, the hot water heater to be operated is provided with a plurality of operation modes in which preset operation modes are set.

[0002]

2. Description of the Related Art A hot water supply apparatus as described above is provided with one of a plurality of operation modes so that the temperature of hot water supplied to a hot water supply point or the supply amount of hot water becomes a target temperature or a target supply amount. In this operation mode, a plurality of hot water heaters are operated. For example, as shown in Japanese Patent Publication No. 62-22379, a condenser and an auxiliary heater in a heat pump device are provided as hot water heaters. Heat pump alone operation mode in which the hot water supplied to the hot water tank as the hot water supply point is heated only by the condenser in the heat pump device, and combined use in which the hot water supplied to the hot water tank is heated by the condenser and the auxiliary heater in the heat pump device If the outside air temperature is higher than a certain temperature, the heat pump alone operation mode is selected and the outside air temperature becomes lower than a certain temperature. When, to select a combined operation mode, based on the outside air temperature, but you have to operate the operation mode to actually operate automatically selected and.

By the way, in the heat pump independent operation mode, it takes more time to operate the hot water tank in the combined operation mode until hot water of the target calorie state is obtained.
The operation efficiency is higher than the operation in the combined operation mode. Further, in the combined operation mode, although the hot water of the target calorie state can be obtained in a shorter time than the operation in the heat pump alone operation mode, the operation efficiency is lower than the operation in the heat pump alone operation mode. Has become. Note that the efficiency indicates a value obtained by dividing the performance (heating capacity) of the device by the amount of energy input to the device.

[0004]

However, in the case of automatically selecting an operation mode to be actually operated on the basis of various conditions such as the outside air temperature as in the above-described prior art, it is not always necessary to meet the demands of the user. Driving could not be performed. That is, there is a demand for a user to quickly obtain hot and cold water in a target calorific state even if the operation efficiency is poor, and to perform efficient operation even if it takes time to obtain hot and cold water in a target calorific state, thereby reducing costs. Although there are various demands such as a demand for reduction, if the operation mode is automatically selected based on the outside air temperature, there is a possibility that the operation may be performed in an operation mode that satisfies a demand that is contrary to a demand of a user. there were.

The present invention has been made in view of such a point, and an object of the present invention is to make it possible to operate in an operation mode that can respond to a user's request among a plurality of operation modes. Another aspect of the present invention is to provide a hot water supply apparatus.

[0006]

According to the first aspect of the present invention, a plurality of heat exchange type hot / cold water heating means heats hot / cold water flowing through a hot / cold flow passage. Operation control means for controlling the operation of the plurality of hot and cold water heating means is provided so that the hot and cold water supplied to the hot and cold water supply point is in the target calorific state, and the operation control means is provided.
Among the plurality of hot water heaters, in the hot water supply apparatus configured to include a plurality of operation modes in which the hot water heater to be operated is set in advance, each of the plurality of hot water heaters corresponds to each of the plurality of hot water heaters. When a preset operation start condition is satisfied, the system is configured to be in an operation start allowable state, and among the plurality of hot water heaters, based on the hot water heater in the operation start allowable state, An operation mode display unit that displays an executable operation mode among the plurality of operation modes is provided, and an operation mode selection unit that can artificially select one of the operation modes displayed on the operation mode display unit. Means are provided, and the operation control means is configured to operate the plurality of hot and cold water heating means in the operation mode selected by the operation mode selection means.

That is, when one of the executable operation modes displayed on the operation mode display section is selected by the operation mode selecting means when the apparatus is operated, the apparatus is operated in the selected operation mode. Is performed, the user can select the operation mode to be actually operated from the currently executable operation modes as necessary. Therefore, it has become possible to provide a water heater that can be operated in an operation mode that can respond to a user's request among a plurality of types of operation modes.

According to the second aspect of the present invention, in each of the operation modes displayed on the operation mode display section,
A prediction efficiency display unit is provided for displaying a prediction efficiency when the plurality of hot / cold water heating means are operated in each operation mode. That is, by operating in cooperation with the first aspect, when the apparatus is operated, the executable operation modes are displayed, and for each of the executable operation modes, the predicted efficiency when the actual operation is performed is displayed. It is possible for the user to select the actual operation mode in consideration of the driving efficiency, and to use the operation mode capable of satisfying the user's demand for cost reduction. It becomes possible to drive.

According to the third aspect of the present invention, among the operation modes displayed on the operation mode display means, the efficiency when operating the plurality of hot / cold water heating means in a certain operation mode is determined by the other operation modes. An efficiency superiority / deterioration display unit is provided for displaying the superiority / inferiority relationship with the efficiency when the plurality of hot / cold water heating units are operated in the operation mode. That is, by operating in cooperation with claim 1, when the apparatus is operated, the executable operation modes are displayed, and for each of the executable operation modes, the superiority or inferiority of the efficiency when the apparatus is actually operated. Can be displayed, so that the user can easily select the operation mode with the best efficiency just by looking at the superiority or inferior relation, and the operation mode can be easily selected.

According to the invention described in claim 4, in each of the operation modes displayed on the operation mode display section,
An operation completion time display section is provided for displaying an operation completion time when the plurality of hot / water heating means are operated in each operation mode. That is, by operating in cooperation with the first aspect, when the apparatus is operated, the executable operation modes are displayed, and the operation completion time when each of the executable operation modes is actually operated is set. Since the display can be displayed, the user can select the actual operation mode in consideration of the operation completion time, and the operation mode can satisfy the demand for quickly obtaining hot and cold water in the target calorific state. It becomes possible to drive.

According to the fifth aspect of the present invention, there is provided an overall efficiency display section for displaying the overall efficiency within a set period when the plurality of hot and cold water heating means are actually operated. That is, since the total efficiency within the set period when the vehicle is actually operated can be displayed, the subsequent operation mode can be selected in consideration of the efficiency in the state where the vehicle is actually operated. In addition, it is possible to accurately select the operation mode based on the actual operation.

According to the invention described in claim 6, the total efficiency display section is configured to display the energy consumption during a set period when the plurality of hot / cold water heating means are actually operated. I have. In other words, the energy consumption in the actually used set period can be displayed together with the overall efficiency in the set period when the vehicle is actually operated by the cooperation with claim 5, so that the overall efficiency can be displayed. In addition to this, the subsequent operation mode can be selected in consideration of the energy consumption as well, so that the operation mode can be selected more accurately when reducing costs.

According to the seventh aspect of the present invention, the total efficiency display section is configured to display the energy cost within a set period when the plurality of hot / cold water heating means are actually operated. . In other words, since the energy cost during the set period when the vehicle is actually driven can be displayed, the user can easily grasp the actual cost that was difficult to understand from the overall efficiency and energy consumption, etc. Becomes possible.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a hot water supply apparatus according to the present invention is applied to an engine heat pump type cooling / heating hot water supply system will be described with reference to the drawings. As shown in FIGS. 1 and 2, the engine heat pump type cooling / heating hot water supply system stores hot water while forming a temperature stratification in the hot water storage tank 1, supplies hot water stored in the hot water storage tank 1, and supplies hot water to the hot water storage tank 1. A hot water storage unit A that heats hot water and radiates heat in the external heat radiating unit 2, and an engine heat pump as a heat pump device that can perform an air-conditioning operation of a space to be air-conditioned and a heating operation for heating hot water in the hot water storage tank 1. Type air conditioner B
It is composed of

The hot water storage unit A includes a hot water storage unit controller C for controlling the operation of the hot water storage unit A, a hot water storage tank 1, a circulation path 3 for circulating hot water in the hot water storage tank 1,
A heating unit 4 for heating hot and cold water flowing through the circulation path 3;
The heat radiating unit 2 is configured to exchange heat with the hot water flowing through the heat radiating unit 2 and radiate heat. The circulating pump P1 is operated to circulate the hot water in the hot water storage tank 1 through the circulation path 3 and is heated by the heating unit 4. Or the heat is radiated by the external heat radiating section 2.

The uppermost thermistor S in the hot water storage tank 1 detects whether or not the amount of hot water stored in the hot water storage tank 1 is equal to or more than a minimum secured amount for hot water supply by detecting the temperature of the hot water.
1. An upper thermistor S2 for detecting whether the amount of hot water is small or more by detecting the temperature of the hot water, and a central thermistor for detecting whether the amount of hot water is medium or more by detecting the temperature of the hot water. S3, a bottom thermistor S4 for detecting whether or not the hot water storage amount is full by detecting the hot water temperature is provided. The installation positions of a plurality of thermistors are from the upper part of the hot water storage tank 1 to the uppermost thermistor S.
1, the upper thermistor S2, the middle thermistor S3, and the bottom thermistor S4 in this order. Then, as required by the user, the target hot water storage amount in the hot water storage tank 1 can be selected from three hot water storage amounts of "small", "medium", and "full" by the hot water storage remote control R2 or the like. .

The hot water storage tank 1 is connected with a water supply path 5 for supplying water to the hot water storage tank 1 using tap water pressure from the bottom thereof, and a hot water supply path 6 for supplying hot water to a bathroom or a kitchen from the upper part thereof. The water is supplied from the water supply channel 5 to the hot water storage tank 1 only in an amount used in a bathroom or a kitchen. A mixing water supply channel 7 branched from the water supply channel 5 is connected to the hot water supply channel 6, and a mixing ratio between hot water from the hot water supply channel 6 and water from the mixing water supply channel 7 can be adjusted at the connection point. A mixing valve 8 is provided. A water supply thermistor 9 for detecting water supply temperature is provided at a branch point between the water supply path 5 and the mixing water supply path 7, and a check valve 10 is provided in each of the water supply path 5 and the mixing water supply path 7. ing. Incidentally, an overflow path 11 is connected to the hot water supply path 6, and the air release valve 1 is connected to the overflow path 11.
2 are provided.

Further, upstream of the mixing valve 8 in the hot water supply path 6, the hot water supply path 6
A hot water outlet thermistor 13 for detecting the temperature of hot water supplied to the hot water supply passage 6 is provided.
Further downstream, a mixing thermistor 14 for detecting the temperature of the hot and cold water mixed by the mixing valve 8 and a hot water supply proportional valve 15 for adjusting the flow rate of hot and cold water in the hot water supply passage 6 are provided.

A hot water supply path 6 downstream of the hot water supply proportional valve 15 has a general hot water supply path 16 for supplying hot water to a hot water tap (not shown) such as a kitchen or a washroom, and a hot water supply path for supplying hot water to a bathtub (not shown). The bath is branched into a hot water path 17, the hot water path 17 is connected to a bath return path 18 from the bathtub, and hot water is supplied to the bathtub through both the bath return path 18 and the bath going path 19. The general hot water supply path 16 includes the general hot water supply path 1.
Hot water supply flow rate sensor 20 for detecting the flow rate of hot water flowing through
In the hot water path 17, a hot water flow sensor 21 for detecting the flow rate of hot water flowing through the hot water path 17, a hot water electromagnetic valve 22, a vacuum breaker 23, and a hot water check valve 2
4 are provided in order from the upstream side.

When hot water is supplied to the general hot water supply passage 16, the mixing valve 8 is set so that the temperature of hot water to be supplied becomes equal to the hot water set temperature based on detection information of the hot water set temperature, the hot water outlet thermistor 13 and the hot water thermistor 9. By adjusting the opening and finely adjusting the opening of the mixing valve 8 based on the difference between the detected temperature and the set hot water supply temperature based on the detection information of the mixing thermistor 14, the hot water at the set hot water supply temperature is supplied. It is configured to be. When filling the bathtub, the bathing electromagnetic valve 22 is opened, and the hot water adjusted to the bathing set temperature by the mixing bubble 8 is supplied to the bathtub from both the bath return path 18 and the bath going path 19. When a set amount of hot water is supplied into the bathtub, the hot water electromagnetic valve 22 is closed to fill the bathtub. The hot water supply operation means G includes a hot water storage outlet thermistor 13, a water supply thermistor 9, a mixing valve 8, a mixing thermistor 14,
And it is constituted by a hot water filling electromagnetic valve 22 and the like.

The circulation path 3 and the hot water storage tank 1 are used to return hot water flowing through the circulation path 3 into the hot water storage tank 1 or to take out hot water from the hot water storage tank 1 to the circulation path 3. Are connected at a total of three locations, one at the top and two at the bottom. More specifically, an upper connection path 25 that connects the circulation path 3 and the hot water storage tank 1 is connected to the upper part of the hot water storage tank 1 via the upstream side of the hot water supply path 6, and is connected to the bottom of the hot water storage tank 1. A return path 26 for returning the hot water flowing through the circulation path 3 to the bottom in the hot water storage tank 1 via the downstream side of the water supply path 5; and a takeout path 27 for taking out the hot water from the bottom in the hot water storage tank 1 to the circulation path 3; Are connected.

The upper connection path 25 is provided with an upper opening / closing valve 28, and the return path 26 is provided with a return opening / closing valve 29. By opening the upper opening / closing valve 28, the circulation path 3 is opened. By supplying the flowing hot or cold water to the upper portion of the hot water storage tank 1 or taking out the hot or cold water from the upper portion of the hot water storage tank 1 to the circulation path 3, the return on-off valve 29 is opened to open the circulation path 3. The flowing hot and cold water can be returned to the bottom in the hot water storage tank 1. Incidentally, a drainage channel 30 for draining hot water from the hot water storage tank 1 is connected to the takeout channel 27, and a safety valve 31 and a manual valve 32 are connected in parallel at an intermediate portion of the drainage channel 30. .

The heating section 4 supplies a heat pump type heating section 33 for supplying a refrigerant from the engine heat pump type cooling / heating device B to heat hot water, and a cooling water for recovering engine exhaust heat of the engine heat pump type cooling / heating device B. The system includes an engine exhaust heat type heating unit 34 for heating hot and cold water, and an auxiliary heating unit 35 as an auxiliary heat source device for heating hot and cold water by burning a burner 36. Each of the heat pump type heating unit 33, the engine exhaust heat utilization type heating unit 34, and the auxiliary heating unit 35 is configured as a heat exchange type hot / cold water heating unit, and each of the plurality of heating units 33, 34, 35 is used. The hot water flowing through the circulation path 3 as the hot water flow path is provided to heat the hot water. A heat pump heating unit 33, an engine exhaust heat utilization heating unit 34, and an auxiliary heating unit 35 are provided in this order from the upstream side in the circulation direction of the hot and cold water in the circulation path 3.

The auxiliary heating section 35 is provided with a gas combustion type burner 36 and a fan 37 for supplying combustion air to the burner 36. The combustion of the burner 36 heats the hot and cold water flowing through the circulation path 3. It is configured as follows.
A fuel supply path 38 for supplying a fuel gas to the burner 36 has a gas safety valve 39, a gas proportional valve 4
0, the gas main valve 41 is provided in this order, and the auxiliary heating unit 35 is provided with a water amount sensor 64 for detecting the flow rate of hot water flowing through the auxiliary heating unit 35. Incidentally, when the water amount sensor 64 detects a water amount equal to or greater than the set amount, the auxiliary heating unit 35 starts the combustion of the burner 36, and based on the detection information of the incoming temperature thermistor 61 and the water amount sensor 64, the fan 37 The rotation speed and the opening of the gas proportional valve 40 are adjusted to adjust the temperature of the hot and cold water heated by the auxiliary heating unit 35.

The external heat radiating section 2 includes a heating radiating section 42 for exchanging heat between hot water flowing through the circulation path 3 and hot water as a heating medium for heating, a hot water flowing through the circulation path 3 and a bathtub. And a bath heat radiating section 43 for exchanging heat with hot and cold water. The circulation path 3 is branched into a heating circulation path 3a having a heating heat radiation section 42 and a bath circulation path 3b having a bath heat radiation section 43, and the heating heat radiation section 42 and the bath heat radiation section. 43 are connected in parallel. The heating circulation path 3a is provided with a heating opening / closing valve 44 on the upstream side of the heating radiator 42 in the direction of circulation of the hot water, and the bath circulation path 3b is provided with a hot water radiator rather than the bath radiator 43. A bath on-off valve 45 is provided on the upstream side in the circulation direction.

The heating radiator 42 includes a heating pump P
By operating the heating device 2, the heat medium circulating through the heating return passage 46 and the heating outgoing passage 47 is heated by hot and cold water flowing through the circulation passage 3. The heating return path 46 is provided with a heating return thermistor 48 for detecting the temperature of the heating medium in the heating return path 46, a makeup water tank 49, and a heating pump P2 in order from the upstream side in the circulation direction of the heating medium. The outgoing path 47 is provided with a heating outgoing thermistor 50 for detecting the temperature of the heat medium in the heating outgoing path 47, and the heating operation means J includes a heating return thermistor 48 and a heating pump P2.
Etc.

The make-up water tank 49 has an upper limit sensor 51 for detecting the upper limit of the water level and a lower limit sensor 5 for detecting the lower limit.
2, a tank water supply passage 53 for supplying water to the makeup water tank 49 is connected, and the makeup water supply passage 53 is provided with a makeup water solenoid valve 54. Further, a heating bypass passage 55 is provided, which supplies the heat medium from the heating return passage 46 to the heating outgoing passage 47 by bypassing the heating radiator 42.

The bath radiator 43 includes a bath pump P
By operating the bath 3, the hot water in the bath tub circulating through the bath return path 18 and the bath going path 19 is heated by the hot water flowing through the circulation path 3. The bath return path 18 has a water level sensor 5 for detecting the level of hot water in the bathtub in order from the upstream side in the circulation direction of hot water in the bathtub.
6. A bath return thermistor 57, a two-way valve 58, a bath pump P3, and a bath water flow switch 59 for detecting the temperature of the hot water in the bath return path 18 are provided, and the bath pump P3 is operated to return the hot water in the bathtub to the bath. Road 18 and bath 1
It is configured to re-fire while heating at the bath heat radiating section 43 while circulating at 9. Then, the bath operation means H includes the water level sensor 56, the bath return thermistor 5
7. It is composed of a bath pump P3 and the like.

The circulation path 3 is provided with a take-off opening / closing valve 60 for taking out hot water from the hot water storage tank 1 to the circulation path 3 through the take-out path 27 at a position upstream of the connection point with the take-out path 27 in the direction of circulation of the hot water. Is provided, between the engine exhaust heat utilization type heating unit 34 and the auxiliary heating unit 35, an incoming temperature thermistor 61 for detecting the temperature of the hot water flowing through the auxiliary heating unit 35, and the hot water flowing through the circulation path 3 A circulation flow rate sensor 62 for detecting a circulation flow rate, a circulation pump P1, and an auxiliary intermittent on-off valve 63 for intermittently supplying hot water to the auxiliary heating unit 35
Is provided. Further, between the auxiliary heating section 35 and the connection point of the upper connection path 25 in the circulation path 3, a circulation water proportional valve 65 for adjusting the circulation flow rate of hot water flowing through the circulation path 3 and the heating section 4 are provided. A hot water storage thermistor 66 for detecting the temperature of hot water in the circulation path 3 after being heated is provided.

The circulation flow rate in the circulation path 3 is adjusted by adjusting the opening of the circulating water proportional valve 65 based on the detection information of the circulation flow rate sensor 62. By adjusting the circulation flow rate in the circulation path 3 and the heating amount in the auxiliary heating section 35 based on the temperature, the temperature of the hot and cold water flowing through the circulation path 3 after being heated by the heating section 4 is configured to be adjustable. The circulation adjusting means F includes a circulation flow sensor 62, a water proportional valve 65 for circulation, a hot water storage thermistor 66, and the like.

The circulation path 3 is provided with a heat pump bypass path 67 for bypassing the upstream side in the direction of circulation of hot water from the take-off opening / closing valve 60 and between the heat pump heating section 33 and the engine exhaust heat utilization heating section 34. The heat pump bypass opening / closing valve 69 provided in the heat pump bypass passage 67 is opened to allow hot water to flow through the heat pump bypass passage 67 and to circulate the hot water by bypassing the heat pump heating unit 33. ing. Further, an auxiliary bypass 68 for circulating hot water by bypassing the auxiliary heating unit 35 is provided in the circulation path 3 by the circulation pump P1.
And an auxiliary intermittent on-off valve 63, and between the auxiliary heating unit 35 and the circulating water proportional valve 65. The auxiliary bypass passage 68 is provided with an auxiliary bypass on-off valve 70. I have.

In this manner, the take-out on-off valve 60, the upper on-off valve 28, the return on-off valve 29, the auxiliary intermittent on-off valve 6
3. After the hot and cold water taken out from the bottom of the hot water storage tank 1 is heated by the heat pump heating unit 33 by controlling the opening and closing of each on-off valve such as the auxiliary bypass on-off valve 70,
The hot water is returned to the upper portion of the hot water storage tank 1, or the hot water taken out from the bottom of the hot water storage tank 1 is heated by the auxiliary heating section 35, and then the hot water is returned to the upper portion of the hot water storage tank 1. The hot and cold water circulation means E includes a circulation path 3, a circulation pump P1, a take-out opening / closing valve 60, and an upper opening / closing valve 2.
8, a plurality of on-off valves such as a return on-off valve 29.

The engine heat pump type cooling and heating device B
As shown in FIG. 2, a plurality of indoor units 71 and outdoor units 7
2, a heat pump operation control unit D that controls the operation of the indoor unit 71 and the outdoor unit 72, and is configured to be capable of air-conditioning a plurality of air-conditioned spaces (for example, each room). Further, the indoor unit 71, the outdoor unit 72, and the heat pump type heating unit 33 in the hot water storage unit A are connected by a refrigerant pipe 73, and are configured so that the refrigerant in the engine heat pump type cooling / heating device A can be supplied to the heat pump type heating unit 33. ing.

Each of the plurality of indoor units 71 is provided with an electronic expansion valve 74, an indoor heat exchanger 75, and an indoor air-conditioning blower 76 for sending out the air regulated by the indoor heat exchanger 75 to the space to be air-conditioned. The opening degree of the electronic expansion valve 74 is adjusted based on the detection information of the refrigerant thermistor 89 that detects the temperature of the refrigerant condensed in the indoor heat exchanger 75. The outdoor unit 72 includes a gas engine 77, a compressor 7
8, accumulator 79, four-way valve 80, outdoor heat exchanger 8
1. An outdoor air-conditioning blower 82 for passing outside air through the outdoor heat exchanger is provided, and a radiator 83 for radiating exhaust heat of the gas engine 77 to the outside and a radiator blower 84 are also provided. The heat pump operating means K includes an electronic expansion valve 74, an indoor air blower 76, a gas engine 77, a compressor 78, a four-way valve 80, an outdoor air blower 82, and the like.

Further, a cooling water passage 85 for circulating cooling water for cooling the gas engine 77 between the gas engine 77 and the radiator 83 is provided.
4 is provided, and the cooling water that has recovered the exhaust heat of the gas engine is
The heating unit 34 utilizing the engine exhaust heat through the heating supply path 90
The exhaust heat switching mechanism 86 is provided so as to be switchable between a heating state in which the heat is supplied to the radiator 83 and an exhaust heat state in which the heat is supplied to the radiator 83 and exhausted. The cooling water circulating means L includes a radiator pump P4, a waste heat switching mechanism 86, a radiator blower 84, and the like.

The operation of the engine heat pump type cooling / heating device B is controlled by the heat pump operation control section D based on a command from the air conditioning remote control R1.
, The air conditioner cooling operation and the air conditioning heating operation can be selectively switched by the switching operation of the four-way valve 80, and the opening and closing control of the electronic expansion valve 74 of the indoor unit 71 allows the room having the air conditioning request to be operated. It is configured to perform air conditioning. When the heat pump heating unit 33 heats the hot and cold water in the circulation path 3, the heating and cooling operation is performed, and the heating electronic expansion valve 74 a is controlled to supply the refrigerant to the heat pump heating unit 33. ing.

In the air-conditioning / cooling operation, the indoor heat exchanger 75 functions as an evaporator to control the temperature of air supplied to the space to be air-conditioned, and the outdoor heat exchanger 81 functions as a condenser to provide outside air. The heat is dissipated. In the air-conditioning / cooling operation, the rotation speed for detecting the rotation speed of the gas engine 77 based on the detection information of the low-pressure detection means 87 for detecting the pressure of the low-pressure refrigerant so that the detected pressure becomes the target pressure for cooling. The rotation speed of the gas engine 77 is controlled based on the detection information of the sensor 77a. Further, in the air-conditioning / cooling operation, the hot water flowing through the circulation path 3 is heated by the engine exhaust heat utilizing heating unit 34 by switching the exhaust heat switching mechanism 86 to the heating state.

The flow of the refrigerant in the air-conditioning / cooling operation will be further described. As shown by the solid arrow in FIG. 2, the high-pressure dry vapor refrigerant discharged from the compressor 78 is supplied to the four-way valve 8.
The heat is supplied to the outdoor heat exchanger 81 through the heat exchanger 0, and is condensed in the outdoor heat exchanger 81 by heat exchange with the outside air. Then, the refrigerant that has passed through the condensation step and is sent from the outdoor heat exchanger 81 is supplied to the indoor heat exchanger 75 via the electronic expansion valve 74, and is evaporated by the heat exchange with the air to be cooled in the indoor heat exchanger 75. You. Thereafter, the low-pressure dry vapor refrigerant sent from the indoor heat exchanger 75 is returned to the suction port of the compressor 78 via the four-way valve 80 and the accumulator 79.

In the air-conditioning and heating operation, the indoor heat exchanger 75 functions as a condenser to control the temperature of air supplied to the space to be air-conditioned, and the outdoor heat exchanger 81 functions as an evaporator to remove air from the outside air. It absorbs heat. In this air-conditioning and heating operation, gas is detected on the basis of the detection information of the high-pressure detection means 88 for detecting the pressure of the refrigerant on the high-pressure side, and based on the detection information of the rotation speed sensor 77a such that the detected pressure becomes the heating target pressure. The rotation speed of the engine 77 is controlled. In this air conditioning and heating operation, hot water flowing through the circulation path 3 is heated by supplying a high-pressure refrigerant to the heat pump heating unit 33 through the refrigerant pipe 73.

The flow of the refrigerant in the air-conditioning / heating operation will be further described. As shown by a dotted arrow in FIG. 2, the high-pressure dry vapor refrigerant discharged from the compressor 78 is supplied to the four-way valve 8.
The heat is supplied to the indoor heat exchanger 75 and the heat pump heating unit 33 through the heat exchanger 0, and is condensed by heat exchange with the air to be heated in the indoor heat exchanger 75. Is condensed by heat exchange. Then, the refrigerant passing through the condensation step sent from the indoor heat exchanger 75 and the heat pump heating unit 33 is supplied to the outdoor heat exchanger 81 via the electronic expansion valve 74 and the heating electronic expansion valve 74a. In the vessel 81, the heat is evaporated by heat exchange with the outside air. Thereafter, the low-pressure dry vapor refrigerant delivered from the outdoor heat exchanger 81 is returned to the suction port of the compressor 78 via the four-way valve 80 and the accumulator 79.

The hot water storage unit control unit C and the heat pump operation control unit D can transmit and receive control signals such as the fact that the engine heat pump type cooling / heating device B is in air-conditioning operation and the drive request to the engine heat pump type cooling / heating device B. The operation control means U is constituted by the hot water storage unit control section C and the heat pump operation control section D.
Then, as shown in FIG. 3, the hot water storage unit control unit C and the heat pump operation control unit D control the air conditioning remote control R1 and the hot water storage remote control R installed in each room as the air conditioning target space.
2, an air-conditioning operation such as an air-conditioning cooling operation or an air-conditioning / heating operation for a space to be air-conditioned, a hot-water storage operation for storing hot water in a hot-water storage tank 1, a heat-dissipation operation for radiating heat in the external heat radiation unit 2, It is configured to execute respective operations such as a hot water supply priority operation for supplying hot water when the amount of hot water stored therein is less than the minimum secured amount.

In the reheating operation in the hot water storage operation and the heat release operation, the executable operation mode of the air conditioning exhaust heat operation mode, the HP operation mode, the HP + auxiliary heating operation mode, and the auxiliary heating operation mode is switched to the hot water storage remote control R2. The operation is performed in the selected operation mode, the hot water is supplied at a set hot water storage temperature to the hot water storage tank 1 as a hot water supply point, and the bath radiator 43 as a hot water supply point is provided. And the operation of the heating unit 4 is controlled such that the hot and cold water supplied to the hot and cold water supply point has a target calorific state. That is, the hot water storage unit control unit C controls the circulation path 3 only with the heat pump heating unit 33, and the air conditioning exhaust heat operation mode in which the hot water flowing through the circulation path 3 is heated only with the engine waste heat type heating unit 34. HP that heats flowing hot and cold water
Operation mode, HP + auxiliary heating operation mode in which the heat pump type heating unit 33 and the auxiliary heating unit 35 heat the hot water flowing through the circulation path 3, heating the hot water flowing through the circulation path 3 only by the auxiliary heating unit 35 The system is provided with four operation modes of an auxiliary heating operation mode.

As shown in FIG. 4, the hot water storage remote control R2 has an operation switch 100 for starting operation of the hot water storage unit A, and a hot water storage switch 1 for storing hot water in the hot water storage tank 1.
01, a reheating switch 102 for reheating the hot water in the bathtub, an executable operation mode in the hot water storage operation and the reheating operation, and a plurality of heating units 33, 34, 35
A display unit 103 for displaying the overall efficiency and the like within a set period when the device is operated, and a selection switch 104 as operation mode selection means for artificially selecting one operation mode from executable operation modes. I have. Then, with the ON operation of the hot water storage switch 101 or the additional heating switch 102, for each of the plurality of operation modes, an operation mode that can be executed or an operation mode that cannot be executed is displayed, Selection switch 104
Thus, the operation mode in which the operation is actually performed is selected from the operation modes that can be executed. In addition, hot water storage remote control R
Although not shown, 2 is configured so that a hot water storage set temperature and a target hot water storage amount when hot water is stored in the hot water storage tank 1 can be set.

The display unit 103 includes an operation mode display unit 103a for displaying a currently executable operation mode among a plurality of operation modes, and a prediction efficiency for displaying a prediction efficiency when operating in each of the executable operation modes. A display unit 103b, an operation completion time display unit 103c that displays an operation completion time when the operation is performed in each of the executable operation modes, and a setting period when the plurality of heating units 33, 34, and 35 are actually operated. It comprises an overall efficiency display section 103d for displaying overall efficiency, energy consumption, and energy cost.

The display of each of the operation mode display section 103a, the predicted efficiency display section 103b, the operation completion time display section 103c, and the total efficiency display section 103d will be described below.

The display of the operation mode display section 103a will be further described. Each of the heat pump heating unit 33, the engine exhaust heat utilization heating unit 34, and the auxiliary heating unit 35 has an operation start condition set in advance corresponding thereto, and when the operation start condition is satisfied. , The operation is started. The operation mode display section 103a displays four operation modes based on the heating section of the heat pump heating section 33, the engine exhaust heat utilization heating section 34, and the auxiliary heating section 35 which are in the operation start allowable state. Among them, the executable operation modes are displayed.
FIG. 4 shows an example in which the air-conditioning exhaust heat operation mode and the auxiliary heating operation mode can be executed, and the HP operation mode and the HP + auxiliary heating operation mode cannot be executed.

That is, when hot water is stored in the hot water storage tank 1, as shown in FIG. 8A, the outside air temperature, the supply water temperature which is the temperature of hot water supplied to the heating unit, and the heating radiating unit 42
The air conditioner uses whether the engine heat pump air conditioner B is operating in air conditioning or not, and the amount of boiling water which is the amount of hot water stored in the hot water storage tank 1 is used. Depending on conditions, air conditioning exhaust heat operation mode,
It is displayed whether each of the HP operation mode, the HP + auxiliary heating operation mode, and the auxiliary heating operation mode is executable. In addition, when reheating the hot water in the bathtub, as shown in FIG. 8B, depending on various conditions such as water supply temperature, heating use, and air conditioning use, the air conditioning exhaust heat operation mode, the HP operation mode, and the HP + auxiliary heating. It is displayed whether each of the operation modes of the operation mode and the auxiliary heating operation mode is executable.

The determination as to whether or not each of the operation modes can be executed will be described with reference to FIG. 8 (b) taking the additional heating operation as an example. The auxiliary heating operation mode is always executable. The air-conditioning exhaust heat operation mode can be executed when the outside air temperature is 4 ° C. or higher, the heating operation is not being performed, and the air-conditioning operation is the air-conditioning cooling operation or the heating load during the air-conditioning / heating operation is small. Then, the HP operation mode and the HP
+ Auxiliary heating operation mode can be executed when the outside air temperature is 4 ° C. or more, the supply water temperature is 35 ° C. or less, the heating operation is not being performed, and the air conditioning operation is not being performed.

The display of the prediction efficiency display section 103b will be further described.
For an executable operation mode, the predicted efficiency when the operation is performed in the operation mode is displayed. Here, the efficiency indicates a value obtained by dividing by the energy amount of only the gas having the heating capability. By the way, the one with the highest efficiency when operated is the air-conditioning exhaust heat operation mode, and hereafter, basically, the HP operation mode, H
The efficiency decreases in the order of the P + auxiliary heating operation mode and the auxiliary heating operation mode. .

A method of obtaining the prediction efficiency will be described in each operation mode. In the air conditioning and exhaust heat operation mode, the cooling efficiency and the hot water supply efficiency are obtained during the air conditioning and cooling operation, and the heating efficiency and the hot water supply efficiency are obtained during the air conditioning and heating, using the coefficients and the mathematical formulas shown in FIG. Further, regarding the cooling efficiency or the heating efficiency, the cooling efficiency or the heating efficiency is multiplied by the ratio of the efficiency at the current load factor to the efficiency at the load factor 1.0 from the relationship between the air conditioning load factor and the efficiency in FIG. To determine the cooling efficiency or heating efficiency at the current load factor. Then, at the time of air conditioning and cooling, the hot water supply efficiency is added to the cooling efficiency at the current load ratio, and at the time of air conditioning and heating, the predicted efficiency is calculated by adding the hot water supply efficiency to the heating efficiency at the current load ratio.

Specifically, the case where the outside air temperature is 15 ° C., the load factor is 0.4, and the air-conditioning / heating operation is executed will be described as an example. First, in the air-conditioning / heating operation shown in FIG. When the heating efficiency when the outside air temperature is 15 ° C. is obtained using the heating coefficient, the heating efficiency is 0.025 × 15 + 0.82.
5 = 1.2, and the load factor of the air conditioning and heating operation is 0.4 from the graph of FIG. 11, so that the heating efficiency at the current load factor = 1.2 × 0.8 / 1.08 = 0. 889
Becomes Then, when the hot water supply efficiency at an outside air temperature of 15 ° C. is obtained using the coefficient of hot water supply in the air conditioning and heating operation of FIG. 8C, the hot water supply efficiency = 0.013 × 15 + 0.413 =
0.608, and the prediction efficiency = 0.889 + the prediction efficiency = heating efficiency + hot water supply efficiency at the current load factor
0.608 = 1.497.

In the HP operation mode, the temperature of the outside air, the amount of boiling water, and the set temperature of the hot water stored in the hot water storage tank 1 are determined using the graph of FIG. The prediction efficiency at the time of hot water storage operation is obtained, and the prediction efficiency at the time of additional heating operation is obtained from the outside air temperature and the bathtub temperature using the graph of FIG. 10 showing the relationship between the bathtub temperature and the efficiency. Specifically, using numerical values, the outside air temperature is 15 ° C. and the boiling amount is 6
When the temperature is 0 liter and the set hot water storage temperature is 60 ° C., the predicted efficiency of the hot water storage operation is 1.21 from the graph of FIG. 9, and when the outside air temperature is 15 ° C. and the bathtub temperature is 15 ° C., the graph of FIG. Therefore, the prediction efficiency at the time of the reheating operation becomes 1.05. In FIG. 9, (60), (7)
0) indicates the set hot water storage temperature, and 7 ° C., 15 ° C., and 35 ° C. indicate the outside air temperature.

In the HP + auxiliary heating operation mode, the HP efficiency when the HP is heated alone and the auxiliary efficiency when the auxiliary is heated alone are determined, and the average value of the HP efficiency and the auxiliary efficiency is used as the predicted efficiency. . The HP efficiency is
This corresponds to the prediction efficiency in the above-described HP operation mode, and the method of obtaining the same is the same as in the above-described HP operation mode. Also,
The auxiliary efficiency is a value obtained by dividing the amount of gas that gives the heating capacity of the auxiliary heating unit 35, and the value is substantially constant. In the auxiliary heating operation mode, the above-described HP +
The auxiliary efficiency in the auxiliary heating operation mode is the predicted efficiency, and the method of obtaining it is the same as the above-described auxiliary efficiency.

The display of the operation completion time display section 103c will be further described. This operation completion time display section 103c
, The operation completion time when the hot water storage operation or the additional heating operation is performed in the executable operation mode is displayed. The operation completion time is a time obtained by dividing the required heating amount by the heating capacity when operating in the executable operation mode. By the way, the operation time when the operation is the shortest is basically the auxiliary heating operation mode, and hereinafter, basically, the HP + auxiliary heating operation mode, the HP operation mode, and the air conditioning exhaust heat operation mode The operation time is longer in the order of.

That is, in each operation mode, the relationship between various conditions and the heating capacity is shown in order to obtain the heating capacity determined by various conditions such as the outside air temperature and the temperature of hot water supplied to the heating unit. Many graphs are prepared,
By using these graphs, the operation completion time in each operation mode is obtained. The method of determining the heating capacity will be described with reference to a graph of FIG. 12 showing a relationship between the outside air temperature and the heating capacity by taking an example of a case where a hot water storage temperature for storing hot water in the hot water storage tank 1 is set at 60 ° C. In the air-conditioning exhaust heat operation mode, FIG.
The heating capacity is obtained from the outside air temperature using the relationship between the hot water heating capacity and the outside air temperature in the graph of FIG. 12, and in the HP operation mode, the outside air temperature is calculated using the relationship between the refrigerant heating capacity and the outside air temperature in the graph of FIG. To determine the heating capacity.

The display of the overall efficiency display section 103d will be further described. The overall efficiency display section 103d displays the overall efficiency, energy consumption, and energy cost during a set period (for example, one month) when the hot water storage operation or the additional heating operation is actually performed. To explain how to determine the overall efficiency, the work amount (heating amount) for each operation during the actual hot water storage operation and the additional heating operation and the gas amount actually used are calculated for each operation from the efficiency in that operation, and the calculation is performed. The total gas amount is calculated by, for example, totaling the obtained gas amounts for one month, and the total work amount for each operation is also calculated, for example, for one month. Then, the total work is divided by the total gas amount to obtain the overall efficiency. Further, the energy consumption is equivalent to the gas amount actually required within a set period (for example, one month), that is, the total gas amount, and the energy cost is equal to the gas rate of the total gas amount. It is equivalent.

The engine heat pump type cooling / heating device B
When the air-conditioning remote controller R1 receives an air-conditioning request such as an air-conditioning cooling request or an air-conditioning / heating request, the heat pump operation control unit D controls the operation of the heat pump operation unit K and the cooling water circulation unit L, and The compressor 78 is operated by the gas engine 77 based on the air conditioning request, and the air conditioner cooling operation and the air conditioning heating operation are selectively switched by the switching operation of the four-way valve 80, and the indoor unit 71 is operated.
By controlling the opening and closing of the electronic expansion valve 74, air conditioning to each air conditioning target space is switched, and the heat pump operating means K is controlled. That is, when the air-conditioning remote controller R1 issues an air-conditioning / cooling request, the heat pump operation control unit D operates the electronic expansion valve 74 corresponding to the room for which the air-conditioning / cooling request is made.
Is opened, the indoor heat exchanger 75 functions as an evaporator, the supply air to the space to be air-conditioned is cooled, and the outdoor heat exchanger 81 functions as a condenser to radiate heat to the outside air. Thus, the air-conditioning / cooling operation is executed by controlling the heat pump operating means K. Further, when there is an air-conditioning / heating request from the air-conditioning remote control R1, the heat pump operation control unit D opens the electronic expansion valve 74 corresponding to the room where the air-conditioning / heating request is made, and causes the indoor heat exchanger 75 to function as a condenser. Then, the air-conditioning / heating operation is executed by controlling the heat pump operating means K so that the temperature of the air supplied to the space to be air-conditioned is controlled and the outdoor heat exchanger 81 functions as an evaporator to absorb heat from the outside air.

Next, the operation of the hot water storage unit A will be described.
Hot water storage unit control section C controls the operation of hot water circulation means E, circulation adjustment means F, hot water supply operation means G, bath operation means H, heating operation means J, and auxiliary heat exchange section 35, so that hot water storage operation and It is configured to execute respective operations such as a heating operation, a heating operation, and a hot water supply priority operation.

Hereinafter, hot water storage operation, reheating operation, heating operation,
Each of the hot water supply priority operations will be described. In the hot and cold water circulation means E, the upper open / close valve 28, the return open / close valve 29, the take-out open / close valve 60, the heat pump bypass valve 69, the auxiliary intermittent open / close valve 63, and the auxiliary bypass open / close valve 70 With respect to the open / closed state, only the open / closed valves to be opened are described, and the open / closed valves not described are closed.

The hot water storage operation is performed in an air-conditioning exhaust heat operation mode,
In the P operation mode, the HP + auxiliary heating operation mode, and the auxiliary heating operation mode, in the operation mode selected by the user with the hot water storage remote control R2 from the executable operation modes, the hot water is removed from the bottom of the hot water storage tank 1 by the heating unit. After heating at 4, the hot water is stored in the hot water storage tank 1 in a mode of returning to the upper portion of the hot water storage tank 1. During the hot water storage operation, when the hot water storage amount of the hot water storage tank 1 reaches the target hot water storage amount set by the hot water storage remote controller R2 or the like, the hot water storage in the hot water storage tank 1 is continued for a set time, and then the operation of the heating unit 2 is stopped. Then, the operation of the circulation pump P1 is stopped and the open / close valve is closed to stop the operation of the hot and cold water circulation means E.

The hot water storage operation in the air-conditioning exhaust heat operation mode will be described. As shown in FIG. 1, the exhaust heat switching mechanism 86 is heated so that the cooling water of the gas engine 77 is supplied to the engine exhaust heat utilizing heating section 34. In addition to switching to the state, the auxiliary bypass opening / closing valve 70 and the upper opening / closing valve 28 are opened, the circulation pump P1 is operated, and hot water taken out from the bottom of the hot water storage tank 1 is discharged to the engine as indicated by the solid arrow in the figure. After being heated only by the heat utilization type heating unit 34, the hot water is returned to the upper part of the hot water storage tank 1. Further, the opening degree of the circulation water proportional valve 65 is adjusted based on the detection information of the hot water storage thermistor 66 so that the temperature of the hot water stored in the upper portion of the hot water storage tank 1 becomes the hot water storage set temperature.

The hot water storage operation in the HP operation mode will be described. As shown in FIG. 5, the heating electronic expansion valve 74a is controlled to the open state, and the engine heat pump type cooling / heating device B is operated in the air conditioning / heating mode. The refrigerant is supplied to the heating unit 33, and the auxiliary bypass on-off valve 70 and the upper on-off valve 28 are opened.
1, the hot water taken out from the bottom of the hot water storage tank 1 is heated only by the heat pump type heating section 33, as shown by the solid line arrow in the figure, and the hot water is then stored in the hot water storage tank 1
Back to the top. Further, the opening degree of the circulation water proportional valve 65 is adjusted based on the detection information of the hot water storage thermistor 66 so that the temperature of the hot water stored in the upper portion of the hot water storage tank 1 becomes the hot water storage set temperature.

The hot water storage operation in the HP + auxiliary heating operation mode will be described. As shown in FIG. 6, the heating electronic expansion valve 74a is controlled to the open state, and the engine heat pump type cooling / heating device B is operated for air conditioning and heating. The refrigerant is supplied to the heat pump type heating unit 33, the auxiliary intermittent on-off valve 63 and the upper on-off valve 28 are opened, and the circulating pump P1 is operated, and as shown by the solid line arrow in the figure, the hot water storage tank 1 After the hot water taken out from the bottom is heated by the heat pump heating unit 33 and the auxiliary heating unit 35, the hot water is returned to the upper part of the hot water storage tank 1. The rotation speed of the fan 37 in the auxiliary heating unit 35 and the opening of the gas proportional valve 40 are adjusted so that the temperature of the hot water stored in the upper portion of the hot water storage tank 1 becomes the set hot water storage temperature.

The hot water storage operation in the auxiliary heating operation mode will be described. As shown in FIG. 7, the auxiliary intermittent on-off valve 63 and the upper on-off valve 28 are opened, the circulating pump P1 is operated, and the solid line in FIG. As shown by the arrow, after the hot water taken out from the bottom of the hot water storage tank 1 is heated only by the auxiliary heating unit 35, the hot water is returned to the upper portion of the hot water storage tank 1. The rotation speed of the fan 37 in the auxiliary heating unit 35 and the opening of the gas proportional valve 40 are adjusted so that the temperature of the hot water stored in the upper portion of the hot water storage tank 1 becomes the set hot water storage temperature.

In the reheating operation, the bath pump P3 is operated to supply hot water in the bathtub to the bath heat radiating section 43 while circulating the hot water in the bath return path 18 and the bath going path 19, and the heating section 4 heats the hot water. The hot and cold water is supplied to the bath heat radiating section 43, and the hot water is circulated in such a manner that the entire amount of the hot water passing through the bath heat radiating section 43 is returned to the heating section 4 by bypassing the hot water storage tank 1. , The hot water in the bathtub is heated by the hot water in the circulation path 3 and refired.

The heating is performed in the operation mode selected by the user with the hot water storage remote controller R2 from the executable operation modes among the air conditioning exhaust heat operation mode, the HP operation mode, the HP + auxiliary heating operation mode, and the auxiliary heating operation mode. The hot and cold water heated in the section 4 is supplied to the bath heat radiating section 43, and the entire amount of hot water passing through the bath heat radiating section 43 is returned to the heating section 4 by bypassing the hot water storage tank 1 so as to be additionally fired. I have. When the temperature detected by the bath return thermistor 57 reaches the set temperature for additional heating during the additional heating operation, the operation of the heating unit 4 is stopped, the operation of the circulation pump P1 is stopped, and the on-off valve is opened. Is closed to stop the operation of the hot and cold water circulation means E.

The reheating operation in the air-conditioning exhaust heat mode will be described. As shown in FIG.
The exhaust heat switching mechanism 86 is switched to a heating state so as to supply the cooling water of No. 7 to the engine exhaust heat utilizing heating unit 34, and the auxiliary bypass on-off valve 70, the bath on-off valve 45, and the heat pump bypass on-off valve 69 are opened. The circulation pump P1 is operated to supply the entire amount of hot water heated only by the engine exhaust heat utilizing heating unit 34 to the bath heat radiating unit 43, as indicated by the hatched portion and the dotted arrow in the figure, and The hot and cold water that has passed through the bath heat radiating section 43 is returned to the engine exhaust heat utilizing heating section 34. Further, the opening of the circulation water proportional valve 65 is adjusted based on the detection information of the hot water storage thermistor 66 so that the temperature of the hot water supplied to the bath heat radiator 43 becomes the additional heating supply temperature.

The reheating operation in the HP operation mode will be described. As shown in FIG. 5, the heating electronic expansion valve 74a is controlled to the open state, and the engine heat pump type cooling / heating device B is operated for air conditioning and heating. The refrigerant is supplied to the heating unit 33, and the auxiliary bypass on-off valve 70, the bath on-off valve 45, and the take-out on-off valve 60
Is opened, and the circulation pump P1 is operated to release the entire amount of hot and cold water heated only by the heat pump heating unit 33 as shown by the hatched portion and the dotted arrow in the figure.
And the hot water is returned to the heat pump heating unit 33 through the bath heat radiating unit 43. Further, the opening of the circulation water proportional valve 65 is adjusted based on the detection information of the hot water storage thermistor 66 so that the temperature of the hot water supplied to the bath heat radiator 43 becomes the additional heating supply temperature.

The reheating operation in the HP + auxiliary heating operation mode will be described. As shown in FIG. 6, the heating electronic expansion valve 74a is controlled to the open state, and the engine heat pump cooling / heating device B is operated for air conditioning and heating. The refrigerant is supplied to the heat pump type heating unit 33, the auxiliary intermittent on-off valve 63, the bath on-off valve 45, and the take-out on-off valve 60 are opened, and the circulation pump P1 is operated. As indicated by the arrows, the entire amount of the hot water heated by the heat pump heating section 33 and the auxiliary heating section 35 is supplied to the bath heat radiating section 43, and the hot water is passed through the bath heat radiating section 43 to heat the hot water. Part 33
And return to the auxiliary heating section 35. Further, the fan 37 in the auxiliary heating unit 35 is controlled so that the temperature of hot water supplied to the bath heat radiating unit 43 becomes the supply temperature for additional heating.
And the opening degree of the gas proportional valve 40 are adjusted.

The supplementary heating operation in the auxiliary heating operation mode will be described. As shown in FIG. 7, the auxiliary intermittent on-off valve 63, the bath on-off valve 45, and the heat pump bypass on-off valve 69 are opened, and the circulation pump P1 is turned on. When activated, as shown by the hatched portion and the dotted arrow in the figure, the entire amount of hot water heated only by the auxiliary heating unit 35 is supplied to the bath heat radiating unit 43, and passes through the bath heat radiating unit 43. The hot and cold water is returned to the auxiliary heating unit 35. Further, the fan 37 in the auxiliary heating unit 35 is controlled so that the temperature of hot water supplied to the bath heat radiating unit 43 becomes the supply temperature for additional heating.
And the opening degree of the gas proportional valve 40 are adjusted.

In the heating operation, the heating pump P2 is operated to circulate the heat medium from the heating terminal (not shown) through the heating return path 46 and the heating outgoing path 47 while radiating the heating radiator 4
2 and the hot and cold water heated by the auxiliary heating section 35 is supplied to the heating radiating section 42, and the heating radiating section 42 is supplied to the heating radiating section 42.
The hot and cold water that has passed through is returned to the auxiliary heating unit 35, and the hot and cold water is circulated.

More specifically, the auxiliary intermittent on-off valve 6
3. Open the bath on-off valve 45 and the heat pump bypass on-off valve 69, operate the circulation pump P1, and supply the entire amount of hot and cold water heated only by the auxiliary heating unit 35 to the bath radiating unit 43; Hot water is returned to the auxiliary heating unit 35 after passing through the bath heat radiating unit 43. Further, the rotation speed of the fan 37 and the opening degree of the gas proportional valve 40 in the auxiliary heating unit 35 are adjusted so that the temperature of the hot water supplied to the heat radiating unit 42 becomes the set temperature for heating.

The hot water supply priority operation is executed when the hot water supply in the hot water storage tank 1 is less than the minimum secured amount and a hot water tap (not shown) is opened to supply hot water. By opening the upper opening / closing valve 28, the circulation pump P1 is opened.
Is operated, the hot water taken out from the bottom of the hot water storage tank 1 is heated by the auxiliary heating unit 35, and then the hot water is supplied from the upper connection path 25 to the hot water supply path 6. Then, based on the hot water supply set temperature and the detection information of the hot water storage outlet thermistor 13 and the water supply thermistor 9, the opening degree of the mixing valve 8 is adjusted so that the temperature of hot water to be supplied becomes the hot water supply set temperature, and the detection of the mixing thermistor 14 is performed. Based on the information, the opening degree of the mixing valve 8 is finely adjusted based on the deviation between the detected temperature and the set hot water supply temperature, thereby supplying hot water at the set hot water supply temperature.

[Another Embodiment] (1) In the above embodiment, the display unit 1 of the hot water storage remote controller R2 is used.
03 is provided with a prediction efficiency display section 103b for displaying a prediction efficiency when each of the operation modes displayed on the operation mode display section 103a is operated in each operation mode. , Operation mode display section 103
Among the operation modes displayed in a, an efficiency superiority / inconsistency display unit is provided for displaying the superiority / inferiority relation between the efficiency when operated in a certain operation mode and the efficiency when operated in another operation mode. It is also possible to carry out. That is, specifically, in FIG. 4 in the above embodiment,
It is possible to set the prediction efficiency column in the efficiency priority order and display the numbers such as 1, 2 and the like in the order of higher efficiency among the executable operation modes.

(2) In the above embodiment, the hot water storage remote control R
2 shows an example in which the prediction efficiency display unit 103b, the operation completion time display unit 103c, and the total efficiency display unit 103d are all provided on the display unit 103, but the prediction efficiency display unit 10
3b, operation completion time display section 103c, total efficiency display section 1
It is also possible to carry out any one or two of the components 03d, and it is also possible to carry out the process without providing all of them.

(3) In the above embodiment, the energy consumption and the energy cost are displayed on the total efficiency display section 103d in accordance with the total efficiency. It is also possible to display only one of them or to execute without displaying both.

(4) The display on the hot water storage remote controller R2 in the above embodiment can be changed as appropriate, such as turning on only the executable operation mode and turning off the non-executable operation mode. Is adaptable.

(5) In the above embodiment, an example was shown in which four operation modes of the air conditioning exhaust heat operation mode, the HP operation mode, the HP + auxiliary heating operation mode, and the auxiliary heating operation mode were provided. The two operation modes include the engine exhaust heat utilization type heating unit 34 and the heat pump type heating unit 3.
The number of operation modes, such as five operation modes including an air conditioning exhaust heat + HP operation mode for heating at 3, or two operation modes of the air conditioning exhaust heat + HP operation mode and the HP operation mode, and The type of operation mode can be changed as appropriate.

(6) In the above-described embodiment, an example is shown in which three heat pump heating units 33, an engine exhaust heat utilization heating unit 34, and an auxiliary heating unit 35 are provided as hot and cold water heating means. The number of heating means may be two, or four or more.

(7) In the above embodiment, an example is shown in which the hot water supply apparatus according to the present invention is applied to an engine heat pump type cooling / heating hot water supply system. However, any hot water supply apparatus provided with a plurality of hot water heating means can be applied. Therefore, the present invention can be applied to various types of hot water supply devices.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water storage unit in an air-conditioning exhaust heat operation mode.

FIG. 2 is a schematic configuration diagram of an engine heat pump type cooling / heating device.

FIG. 3 is a control block diagram of an engine heat pump type cooling / heating hot water supply system.

FIG. 4 is a schematic configuration diagram of a hot water storage remote controller.

FIG. 5 is a schematic configuration diagram of a hot water storage unit in an HP operation mode.

FIG. 6 is a schematic configuration diagram of a hot water storage unit in an HP + auxiliary heating operation mode.

FIG. 7 is a schematic configuration diagram of a hot water storage unit in an auxiliary heating operation mode.

FIG. 8 is a table showing operation start conditions and operation efficiency in each operation mode.

FIG. 9 is a graph showing the relationship between the efficiency and the amount of boiling when storing hot water in HP.

FIG. 10 is a graph showing the relationship between the efficiency at the time of HP reheating and the bathtub temperature.

FIG. 11 is a graph showing the relationship between efficiency and load factor during air-conditioning operation.

FIG. 12 is a graph showing a relationship between a heating capacity and an outside air temperature.

[Explanation of symbols]

 1,43 hot and cold water supply point 3 hot and cold water flow passages 33,34,35 hot and cold water heating means 103a operation mode display section 103b prediction efficiency display section 103c operation completion time display section 103d overall efficiency display section 104 operation mode selection means U operation control means

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 000221834 Toho Gas Co., Ltd. 19-18 Sakuradacho, Atsuta-ku, Nagoya-shi, Aichi (71) Applicant 000196680 Seibu Gas Co., Ltd. 1-17-1 Chiyo, Hakata-ku, Fukuoka-shi, Fukuoka No. 1 (72) Inventor Toru Fukuchi Osaka Gas Co., Ltd. 1-3-1 Kitako Shiratsu, Konohana-ku, Osaka-shi (72) Inventor Sakunari Sakuni 1-3-1 Kitako-Shiratsu, Konohana-ku, Osaka-shi Osaka Within Gas Co., Ltd. (72) Inventor Yasuhito Hashizume 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka Herman Co., Ltd. (72) Inventor Toshihiro Kawachi 1-1-52, Oka, Minami-shi, Minato-ku, Osaka, Osaka Shares (72) Inventor Yasushi Fujikawa 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka-shi Herman Inc. (72) Inventor Yoshio Fujimoto Osaka-shi, Osaka 1-152 Oka, Minami-shi, Minami-ku, Harman Co., Ltd. (72) The inventor's office Kenji 1-1-51, Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka Harman Co., Ltd. (72) Tomoya Sakiishi, Osaka, Osaka 1-152 Oka, Minami-shi, Minato-ku, Tokyo Harman Co., Ltd. (72) Inventor Kenichi Tanoka 1-5-20, Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. (72) Kazuya Yamaguchi, inventor Kazuya Yamaguchi Tokyo Metropolitan Government (72) Inventor Naoji Shiya 19-18 Sakuradacho, Atsuta-ku, Nagoya-shi, Aichi Prefecture In-House Gas Co., Ltd. (72) Inventor Mikio Ito Nagoya, Aichi Prefecture 19--18 Sakurada-cho, Atsuta-ku, East Japan Gas Co., Ltd. (72) Inventor Michinori Kawahara 1-17-1 Chiyo, Hakata-ku, Fukuoka City, Fukuoka Prefecture Inside Seibu Gas Co., Ltd.

Claims (7)

[Claims]
1. A plurality of heat exchange type hot / cold water heating means are provided so as to heat hot / cold water flowing through a hot / cold water flow path, so that hot / cold water supplied to a hot / cold water supply point has a target calorific state. Operation control means for controlling the operation of the plurality of hot and cold water heating means is provided, wherein the operation control means includes:
A hot water supply apparatus comprising a plurality of operating modes in which hot water heating means to be operated is provided with a plurality of preset operation modes, wherein each of the plurality of hot water heating means has a preset operation start corresponding to each of the plurality of hot water heating means. When the use condition is satisfied, the system is configured to be in an operation start allowable state, and among the plurality of hot water heaters, the plurality of operation modes of the plurality of operation modes are based on the hot water heater in the operation start allowable state. An operation mode display unit for displaying an executable operation mode is provided, and operation mode selection means for artificially selecting one of the operation modes displayed on the operation mode display unit is provided. A hot water supply device, wherein the control means is configured to operate the plurality of hot and cold water heating means in the operation mode selected by the operation mode selection means.
2. In each of the operation modes displayed on the operation mode display section, there is provided a prediction efficiency display section for displaying the prediction efficiency when the plurality of hot and cold water heating means are operated in each operation mode. The hot water supply device according to claim 1.
3. The efficiency of operating the plurality of hot water heaters in one operation mode among the operation modes displayed on the operation mode display means, and the plurality of hot water heaters in another operation mode. 2. The hot water supply apparatus according to claim 1, further comprising an efficiency display section for displaying a priority relationship with efficiency when the means is operated.
4. In each of the operation modes displayed on the operation mode display section, an operation completion time display section is provided for displaying an operation completion time when the plurality of hot and cold water heating means are operated in each operation mode. The hot water supply device according to any one of claims 1 to 3, wherein the hot water supply device is provided.
5. An overall efficiency display section for displaying an overall efficiency within a set period when the plurality of hot and cold water heating means are actually operated.
The hot water supply device according to the item.
6. The hot water supply apparatus according to claim 5, wherein the total efficiency display section is configured to display an energy consumption amount during a set period when the plurality of hot water heating means are actually operated. .
7. The hot water supply according to claim 5, wherein the total efficiency display unit is configured to display an energy cost within a set period when the plurality of hot water heaters are actually operated. apparatus.
JP2000110151A 2000-04-12 2000-04-12 Water heater Expired - Fee Related JP4169452B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000110151A JP4169452B2 (en) 2000-04-12 2000-04-12 Water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000110151A JP4169452B2 (en) 2000-04-12 2000-04-12 Water heater

Publications (2)

Publication Number Publication Date
JP2001296049A true JP2001296049A (en) 2001-10-26
JP4169452B2 JP4169452B2 (en) 2008-10-22

Family

ID=18622717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000110151A Expired - Fee Related JP4169452B2 (en) 2000-04-12 2000-04-12 Water heater

Country Status (1)

Country Link
JP (1) JP4169452B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010117083A (en) * 2008-11-13 2010-05-27 Nippon Thermoener Co Ltd Hot water supply system
JP2011043301A (en) * 2009-08-21 2011-03-03 Hitachi Appliances Inc Electric water heater and operation terminal for the same
JP2012220073A (en) * 2011-04-07 2012-11-12 Panasonic Corp Water heater
JP2013160491A (en) * 2012-02-09 2013-08-19 Panasonic Corp Water heater
EP2447613A3 (en) * 2010-10-29 2016-06-29 Robert Bosch GmbH Method for regulating a heat pump assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010117083A (en) * 2008-11-13 2010-05-27 Nippon Thermoener Co Ltd Hot water supply system
JP2011043301A (en) * 2009-08-21 2011-03-03 Hitachi Appliances Inc Electric water heater and operation terminal for the same
EP2447613A3 (en) * 2010-10-29 2016-06-29 Robert Bosch GmbH Method for regulating a heat pump assembly
JP2012220073A (en) * 2011-04-07 2012-11-12 Panasonic Corp Water heater
JP2013160491A (en) * 2012-02-09 2013-08-19 Panasonic Corp Water heater

Also Published As

Publication number Publication date
JP4169452B2 (en) 2008-10-22

Similar Documents

Publication Publication Date Title
CN105570993B (en) Air-conditioning equipment
US4098092A (en) Heating system with water heater recovery
AU598982B2 (en) Three function heat pump system
JP3876911B2 (en) Water heater
US9500375B2 (en) Heat pump and method for controlling the same
JP2013083421A (en) Hot water supply air conditioning system
EP2402686B1 (en) Heat pump system
JP5208122B2 (en) Hot water system
EP1767879B1 (en) Heat pump-type hot water supply apparatus
JP4378900B2 (en) Heat pump type water heater
JP5073970B2 (en) Heat pump hot water floor heater
JP4058696B2 (en) Heat pump hot water supply system
US8769974B2 (en) Heat pump system
US6735969B2 (en) Gas heat pump type air conditioning device, engine-coolant-water heating device, and operating method for gas heat pump type air conditioning device
JP5642207B2 (en) Refrigeration cycle apparatus and refrigeration cycle control method
KR101329509B1 (en) Hot water circulation system associated with heat pump and method for controlling the same
CA1214336A (en) Heat pump system
EP2287536B1 (en) Hot water circulation system comprising a heat pump and method for controlling the same
JP5087484B2 (en) Hot water storage hot water heater
US20110154848A1 (en) Heat pump-type cooling/heating system
JP2005195313A (en) Composite air-conditioning system
KR100640137B1 (en) Heat pumped water heating and heating apparaturs
KR101758179B1 (en) Heat pump type speed heating apparatus
JP4254648B2 (en) Heating system
JP2004108597A (en) Heat pump system

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20070406

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070406

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080411

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080417

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080616

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080710

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080805

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110815

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140815

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees