Wireless temperature maintenance container

• US 10,158,249 B2
• Filed: 05/19/2016
• Issued: 12/18/2018
• Est. Priority Date: 02/05/2016
• Status: Active Grant

• Current Assignee: Peng Fa Design International Co., Ltd.
• Original Assignee: Peng Fa Design International Co., Ltd.
• Inventors: Peng, Yen-Chun, Ting, Yun-Yi
• Primary Examiner(s): Borroto, Alfonso Perez
• Assistant Examiner(s): YESHAW, ESAYAS G
• Application Number:
  US15/158,773
• Publication Number:
  US 20170229909A1
• Time in Patent Office: 943 Days
• CPC Class Codes: A47G 19/2288 with means for keeping liquid cool or hot
• CPC Class Codes: A47J 36/2472 of the cordless type, i.e. whereby the cup can be plugged into an electrically-powered base element
• CPC Class Codes: A47J 36/2483 with electrical heating means
• CPC Class Codes: F25B 21/02 using Peltier effect; using Nernst-Ettinghausen effect
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H05B 2203/021 Heaters specially adapted for heating liquids
• CPC Class Codes: H05B 6/062 for cooking plates or the like
• CPC Class Codes: H05B 6/1236 adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way

Abstract

A wireless temperature maintenance container has an accommodating space accommodating a transmitter circuit and a receiver circuit. The transmitter circuit comprises a first power processing circuit and a transmitter coil. The first power processing circuit receives a utility power and outputs a first direct current. The transmitter coil receives the first direct current and generates a magnetic field. The receiver circuit comprises a receiver coil, a second power processing circuit and a temperature controller. The magnetic field passes the receiver coil and an alternating current is generated. The second power processing circuit receives the alternating current and outputs a second direct current. The temperature controller receives the second direct current to control the temperature of the container. The transmitter circuit is on the first circuit board, and the receiver circuit is on the second circuit board. Distance between the first circuit board and the second board is 2 mm˜4 mm.

Claims

1. A wireless temperature maintenance container, having an accommodating space at its bottom, comprising:

a transmitter circuit, configured in the accommodating space, comprising;

a first power processing circuit, receiving a utility power, outputting a first direct current and converting the first direct current to an alternating current; and

a transmitter coil, connected to the first power processing circuit, receiving the alternating current and generating a magnetic field based on an electromagnetic induction;

a receiver circuit, configured in the accommodating space, comprising;

a receiver coil, the magnetic field passing through the receiver coil to generate another alternating current based on the electromagnetic induction;

a second power processing circuit, connected to the receiver coil, including;

a rectifier, connected to the receiver coil, rectifying the another alternating current and generating a second direct current;

a current regulator, connected to the rectifier, stabilizing the second direct current; and

a second controller, connected to the receiver coil, the rectifier and the current regulator, to control the receiver coil, the rectifier and the current regulator; and

a temperature controller, connected to the second controller, controlled by the second controller, receiving the second direct current and controlling the temperature of the wireless temperature maintenance container according to the second direct current;

wherein the transmitter circuit is configured on a first circuit board, the receiver circuit is configured on a second circuit board, and there is a predetermined distance between the first circuit board and the second circuit board.

2. The wireless temperature maintenance container according to claim 1, wherein the predetermined distance between the first circuit board and the second circuit board is 2 mm˜

4 mm.

3. The wireless temperature maintenance container according to claim 1, wherein the first power processing circuit comprises:

an AC-DC converter, receiving the utility power, transforming the utility power to output a first direct voltage;

a driver, connected to the AC-DC converter, receiving the first direct voltage, outputting the first direct current and converting the first direct current to the alternating current, to drive the transmitter coil to generate the magnetic field based on the electromagnetic induction; and

a first controller, connected to the driver and the transmitter coil, controlling the driver and the transmitter coil.

4. The wireless temperature maintenance container according to claim 1, wherein the temperature controller comprises a heater circuit, the heater circuit comprises at least one thermal resistor and the thermal resistor is connected to the second controller.

5. The wireless temperature maintenance container according to claim 4, wherein when the wireless temperature maintenance container is working, the second controller continually feeds back a data signal to the transmitter coil via the receiver coil according to a temperature value detected by the thermal resistor, and the first controller determines whether to stop supplying power to the temperature controller according to the data signal.

6. The wireless temperature maintenance container according to claim 5, wherein the first controller determines and controls the driver to adjust the first direct current according to the data signal if the temperature value detected by the thermal resistor is equal to or larger than a threshold temperature.

7. The wireless temperature maintenance container according to claim 1, wherein the temperature controller comprises a cooling circuit.

8. The wireless temperature maintenance container according to claim 3, wherein the transmitter circuit further comprises a status display connected to the first controller of the first power processing circuit.

9. The wireless temperature maintenance container according to claim 1, wherein the wireless power transmission between the transmitter circuit and the receiver circuit is suited to the WPC standard protocol, the PMA standard protocol or the A4WP standard protocol.