HEAT PUMP HOT-WATER SUPPLY SYSTEM

• US 20120205090A1
• Filed: 08/30/2010
• Published: 08/16/2012
• Est. Priority Date: 09/28/2009
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Honma, Masaya, Kobayasi, Susumu
• Granted Patent: US 9,410,707 B2
• Time in Patent Office: Days
• US Class Current: 165/287
• CPC Class Codes: F24D 17/02 using heat pumps
• CPC Class Codes: F24D 19/1054 the system uses a heat pump
• CPC Class Codes: F24D 2200/12 Heat pump
• CPC Class Codes: F24D 2220/08 Storage tanks
• CPC Class Codes: G05B 2219/2658 Heat pump

Abstract

A heat pump hot-water supply system includes a heat pump hot-water supply device, a storage tank for storing hot water obtained by operating the heat pump hot-water supply device, and a control device for controlling starting/stopping of the heat pump hot-water supply device. The control device estimates an outside air temperature of a place where the heat pump hot-water supply device is installed and determines an operating time zone of the heat pump hot-water supply device based on an estimated value of the outside air temperature.

Claims

1. A heat pump hot-water supply system, comprising a heat pump hot-water supply device, a storage tank for storing hot water obtained by operating the heat pump hot-water supply device, and a control device for controlling starting/stopping of the heat pump hot-water supply device, wherein:

the control device estimates an outside air temperature of a place where the heat pump hot-water supply device is installed and determines an operating time zone of the heat pump hot-water supply device based on an estimated value of the outside air temperature.

2. The heat pump hot-water supply system of claim 1, wherein the control device compares an outside air temperature of a current day and an estimated value of the outside air temperature of a next day to determine the operating time zone of the heat pump hot-water supply device.

3. The heat pump hot-water supply system of claim 2, wherein the control device operates the heat pump hot-water supply device on the current day if the outside air temperature of the current day is higher than the estimated value of the outside air temperature of the next day.

4. The heat pump hot-water supply system of claim 3, wherein the control device operates the heat pump hot-water supply device on the next day if the outside air temperature of the current day is lower than the estimated value of the outside air temperature of the next day.

5. The heat pump hot-water supply system of anyone claim 1, wherein the control device operates the heat pump hot-water supply device in a time zone in which the estimated value of the outside air temperature is at a maximum in a predetermined period of time starting from a current time.

6. The heat pump hot-water supply system of claim 1, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

7. The heat pump hot-water supply system of claim 2, wherein the control device operates the heat pump hot-water supply device in a time zone in which the estimated value of the outside air temperature is at a maximum in a predetermined period of time starting from a current time.

8. The heat pump hot-water supply system of claim 3, wherein the control device operates the heat pump hot-water supply device in a time zone in which the estimated value of the outside air temperature is at a maximum in a predetermined period of time starting from a current time.

9. The heat pump hot-water supply system of claim 4, wherein the control device operates the heat pump hot-water supply device in a time zone in which the estimated value of the outside air temperature is at a maximum in a predetermined period of time starting from a current time.

10. The heat pump hot-water supply system of claim 2, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

11. The heat pump hot-water supply system of claim 3, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

12. The heat pump hot-water supply system of claim 4, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

13. The heat pump hot-water supply system of claim 5, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

14. The heat pump hot-water supply system of claim 7, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

15. The heat pump hot-water supply system of claim 8, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.

16. The heat pump hot-water supply system of claim 9, wherein the control device determines the operating time zone of the heat pump hot-water supply device by taking into further consideration electricity rates depending on time zones.