Anti-condensing control panel with intergral overcurrent protection devices

• US 10,641,540 B2
• Filed: 09/28/2018
• Issued: 05/05/2020
• Est. Priority Date: 10/19/2017
• Status: Active Grant

• Current Assignee: Hill Phoenix Incorporated (Dover Corporation)
• Original Assignee: Hill Phoenix Incorporated (Dover Corporation)
• Inventors: Williamson, Donald E.
• Primary Examiner(s): Norman, Marc E
• Application Number:
  US16/146,480
• Publication Number:
  US 20190120537A1
• Time in Patent Office: 585 Days
• CPC Class Codes: F25D 21/04 Preventing the formation of frost or condensate
• CPC Class Codes: F25D 21/08 by electric heating
• CPC Class Codes: F25D 23/02 Doors; Covers F25D23/08 takes precedence locks or fastenings E05B65/0042
• CPC Class Codes: F25D 29/005 Mounting of control devices
• CPC Class Codes: H02H 3/08 responsive to excess current responsive to abnormal temperature caused by excess current H02H5/04
• CPC Class Codes: H05B 1/0288 for non specified applications
• CPC Class Codes: H05B 2203/035 Electrical circuits used in resistive heating apparatus
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 7/20954 for display panels

Abstract

An anti-condensing system includes a control panel configured to electrically couple between a power source and a temperature regulating display unit. The control panel includes a housing defining an interior cavity, a door selectively repositionable to facilitate accessing the interior cavity of the housing, and a circuitry assembly disposed within the interior cavity. The circuitry assembly includes a relay configured to couple to a heating element of the temperature regulating display unit, an overcurrent protection breaker coupled to the relay and directly integrated into the control panel such that the overcurrent protection device can be locked out at the control panel, and a control circuit coupled to the relay. The control circuit is configured to actively control the relay to prevent condensation from forming on the temperature regulating display unit.

Claims

1. An anti-condensing system comprising:

one or more temperature regulating display units, each of the one or more temperature regulating display units including a housing, at least one thermal element, and at least one door selectively repositionable to facilitate accessing an interior of the housing; and

a control panel configured to electrically couple between a power source and the one or more temperature regulating display units, the control panel including;

a panel housing defining an interior cavity;

a panel door selectively repositionable to facilitate accessing the interior cavity of the panel housing; and

a circuitry assembly disposed within the interior cavity, the circuitry assembly including;

one or more relays, each of the one or more relays coupled to a respective one of the at least one thermal element of the one or more temperature regulating display units;

one or more overcurrent protection breakers, each of the one or more overcurrent protection breakers coupled to a respective one of the one or more relays and directly integrated into the control panel such that each of the one or more overcurrent protection breakers can be individually locked out at the control panel; and

a control circuit coupled to the one or more relays, the control circuit configured to actively control the one or more relays to prevent condensation from forming on the temperature regulating display units.

2. The anti-condensing system of claim 1, wherein the one or more overcurrent protection breakers are positioned between the power source and the one or more relays.

3. The anti-condensing system of claim 2, wherein the control panel includes a panel disconnect positioned within the interior cavity of the panel housing and between the power source and the circuitry assembly, the panel disconnect configured to facilitate electrically isolating the circuitry assembly from an incoming power supply provided by the power source.

4. The anti-condensing system of claim 1, wherein the one or more overcurrent protection breakers are coupled to a rear surface of the panel door.

5. The anti-condensing system of claim 1, wherein the one or more relays are coupled to the panel housing.

6. The anti-condensing system of claim 1, wherein the one or more relays are configured to facilitate providing a pulsed current to the at least one thermal element of each of the one or more temperature regulating display units.

7. The anti-condensing system of claim 6, wherein the pulsed current reduces an overall power consumption of the one or more temperature regulating display units.

8. The anti-condensing system of claim 6, wherein the control circuit is configured to receive at least one of temperature data or humidity data indicative of a dew point proximate the one or more temperature regulating display units.

9. The anti-condensing system of claim 8, wherein the control circuit is configured to vary the pulsed current provided by the one or more relays to maintain a temperature of at least one of the housing or the at least one door of each of the one or more temperature regulating display units above the dew point to prevent the formation of condensation thereon.

10. The anti-condensing system of claim 1, wherein the anti-condensing system includes a plurality of temperature regulating display units, a plurality of relays, and a plurality of overcurrent protection breakers.

11. An anti-condensing system comprising:

a control panel configured to electrically couple between a power source and a temperature regulating display unit, the control panel including;

a housing defining an interior cavity;

a door selectively repositionable to facilitate accessing the interior cavity of the housing; and

a circuitry assembly disposed within the interior cavity, the circuitry assembly including;

a relay configured to couple to a heating element of the temperature regulating display unit;

an overcurrent protection breaker coupled to the relay and directly integrated into the control panel such that the overcurrent protection device can be locked out at the control panel; and

a control circuit coupled to the relay, the control circuit configured to actively control the relay to prevent condensation from forming on the temperature regulating display unit.

12. The anti-condensing system of claim 11, wherein circuitry assembly includes a plurality of relays and a plurality of overcurrent protection breakers, each of the plurality of overcurrent protection breakers associated with a respective one of the plurality of relays and each of the plurality of relays associated with a respective heating element.

13. The anti-condensing system of claim 11, wherein the overcurrent protection breaker is positioned between the power source and the relay.

14. The anti-condensing system of claim 13, wherein the control panel includes a panel disconnect positioned within the interior cavity of the housing and between the power source and the circuitry assembly, the panel disconnect configured to facilitate electrically isolating the circuitry assembly from an incoming power supply provided by the power source.

15. The anti-condensing system of claim 11, wherein the overcurrent protection breaker is coupled to a rear surface of the door.

16. The anti-condensing system of claim 11, wherein the relay is coupled to the housing.

17. The anti-condensing system of claim 11, wherein relay is configured to facilitate providing a pulsed current to the heating element.

18. The anti-condensing system of claim 11, wherein the control circuit is configured to receive at least one of temperature data or humidity data indicative of a dew point proximate the temperature regulating display unit.

19. The anti-condensing system of claim 18, wherein the control circuit is configured to vary a current provided by the relay to the heating element to maintain a temperature of components of the temperature regulating display unit above the dew point to prevent the formation of condensation thereon.

20. A method for preventing condensation from forming on a temperature regulating display unit, the method comprising:

coupling a control panel between a power source and the temperature regulating display unit, the control panel including (i) a relay configured to couple to a heating element of the temperature regulating display unit, (ii) an overcurrent protection breaker coupled to the relay and directly integrated into the control panel such that the overcurrent protection device can be locked out at the control panel, and (iii) a control circuit coupled to the relay;

receiving, by the control circuit, at least one of temperature data or humidity data indicative of a dew point proximate the temperature regulating display unit; and

actively controlling, by the control circuit, a current provided by the relay to the heating element to maintain a temperature of components of the temperature regulating display unit above the dew point to prevent the formation of condensation thereon;

wherein the relay is configured to facilitate providing a pulsed current to the heating element to reduce an overall power consumption of the temperature regulating display unit.