Patent Grant
10072855
1. Field of the Invention
The present invention relates to a valve; and more particularly, the present invention relates to a combination valve for use in a hydronic heating, ventilation and air conditioning (HVAC) system.
2. Brief Description of Related Art
An increasing number of today's hydronic HVAC systems utilize variable frequency drives and variable speed pumps. Most such known systems require shut-off and check valves and flow measurement devices that are either permanently or temporarily installed to verify the system flow rate. When permanently installed in a hydronic HVAC system, these known flow measurement devices take up extra space and increase the system head loss. Significant amounts of extra pipe length may be required depending on the type of flow measurement device being used.
When employed, non-permanent means of flow rate measurement can be labor intensive and, depending on the type of technology used, present a varying degree of accuracy, data portability, and opportunities for water leakage.
Moreover, U.S. Pat. No. 9,366,582, which is assigned to the assignee of the present application and hereby incorporated by reference in its entirety, discloses one such known combination isolation and check valves. Such known combination isolation and check valves like that disclosed in the '582 patent require that its sensors, e.g., which may include some combination of pressure, temperature or flow rate sensors, be powered using a hardwired power source configuration. However, the use of such a hardwires power source configuration can cause or create numerous issues and disadvantages related to connecting or coupling such hardwired power source to such sensors, as follows:
For example, there is a need for physical access to a hardwired power source at or near the combination valve having such sensors therein to power up. There is also a need to physically run, connect or couple electrical wiring from the hardwired power source to the combination valve. The electrical wiring run from the hardwired power source to the combination of the one or more sensors can cause, or result in, associated electrical wiring clutter. The associated electrical wiring clutter for connecting to such hardwired power sources can cause and create electrical and mechanical safety hazards in the HVAC system as a whole, e.g., especially over time.
By way of further example, since the sensors need to be coupled or connected to the electrical wiring, such electrical couplings or connections used can typically be prone to failure, unreliable in the long run, and can easily be compromised themselves over time, e.g., due to moisture, dirt, ambient atmospheric conditions, and movement, including vibrations associated with certain HVAC applications and/or environments. In addition, such sensors, especially if unsealed (e.g. hermetically), may also be compromised themselves over time, e.g., due to exposure to moisture, dirt and ambient atmospheric conditions that can cause corrosion, e.g., from water and oxygen. Moreover still, such sensors themselves can also be compromised over time due to unexpected and undesirable movement from the electrical wiring, e.g., by being disturbed, pulled, and ripped/broken in any such HVAC application and/or environments. The electrical couplings or connections can also prevent or severely compromise the ability to actually seal such sensors in a moisture-resistant enclosure, especially hermetically, if so desired, since the electrical wiring needs to be run into and through the housing of such sensors to provide power.
All of the aforementioned problems can arise in various HVAC applications, e.g., including residential, commercial or industrial applications and/or environments.
In view of this, there is a need for a better way to provide power to operate combination isolation and check valves having such sensors.
In summary, the present invention provides for a wirelessly powered combination valve for use in a hydronic HVAC system to function as an isolation valve; a check valve; and as a means for measuring fluid parameters, such as flow rate, pressure, and/or temperature. The flow rate, pressure, and/or temperature sensors are to be embedded in the combination valve. These sensors feature a method of transmitting such fluid parameters to various HVAC system controls. Based on the data collected at the combination valve, the signal transmitted to the control device will enable the HVAC system loop pump to adjust its performance and meet the desired system requirements. Specifically, continuous flow rate, pressure, and temperature measurements taken at the wirelessly powered combination valve may be transmitted to a paired device interfacing with the system's controller (e.g., a variable frequency drive (VFD); a building management system (BMS); or other such control device). In operation, the system controller may vary the power supplied to the pump and thus adjust the pump's performance, e.g., based upon the signal received. This creates a continuous I/O (Input/Output) feedback loop where the flow rate, pressure, and/or temperature are the inputs, and the pump performance parameters are the desired outputs. The data can also be transmitted to a handheld device or a remote location for instant evaluation.
The new combination of isolation valve, check valve, with embedded sensors for flow rate, pressure, and/or temperature measurement according to the present invention provides a compact product envelope that achieves space savings, by eliminating the need for separate components in an HVAC system, such as separate isolation valves, check valves, flow meters, pressure gages, and/or thermometers, as well as electrical couplings and connectors for connecting the same to an electrical power source. The continuous I/O feedback loop between the integral sensors of the combination valve and the control device of the pump ensures that maximum energy is saved as the pump and system always run at a desired optimal condition.
According to some embodiments, this new combination valve may be configured to incorporate all of these features in as compact of an envelope as possible to save space and energy when installed. Flow rate, pressure, and/or temperature measurement features that are embedded into this combination valve will eliminate the possibility of leakage that normally exists when probes are inserted into the valve or system accessory to measure the internal fluid pressure or temperature, and substantially reduce unreliability and failure due to the aforementioned issues related to connecting or coupling to an electrical power source. Likewise, this combination valve will produce a single head loss location for system design considerations.
Moreover, some embodiments of this combination valve may incorporate an onboard wireless power receiver, e.g., to energize the various internal sensors and enable data communication. The wireless power transmission may be enabled by a remote transmitter by employing any suitable technology of cordless energy transmission, among which radio frequency (RF) converted to direct current (DC) on board the combination valve is one preferred method.
When acting as a positive shut-off isolation valve, this new combination valve will prevent fluid flow so that maintenance can be performed on the pump or system. When acting as a check valve, this new combination valve will prevent backflow and gravity circulation, which is harmful to pump or system operation when it occurs.
According to some embodiments, flow measurement would occur through an embedded electromagnetic, electromechanical, or mechanical flow measurement device used in combination with the pressure and/or temperature measurements. These sensors may be configured to provide real-time data that can be captured by the system controller to record conditions for the user. Data collected at this new combination valve would, in some embodiments, be wirelessly transmitted to a paired device that interfaces with the system controller (VFD, BMS, or other) and pump. The system controller could likewise wirelessly transmit status updates to the combination valve. The system controller may be configured to direct the pump to increase or decrease speed, e.g., as required to satisfy optimal system conditions. Some embodiments may be configured to use a wired connection to transmit the data between the new combination valve and the system controller.
Wireless power transmission may be configured to energize the various onboard combination valve sensors and enable data transmission from the new combination valve to the pump controller, thus eliminating clutter, electrical and mechanical safety hazards and improving the mechanical set-up of the entire system.
By way of example, once enabled by the remote transmitter, the RF signaling for powering the device may be continuously powering the internal sensors, or periodically powering the internal sensors, or powering the internal sensors based upon the sensing and/or data transmission rate, or some combination thereof.
In particular, and by way of further example, an actual application/implementation may include, or take the form of, employing a continuous wireless power supply to the valve module. The embedded valve sensors may be powered by discrete energy packets for data collection and transmission within the valve module. The data transmission from the valve to the VFD (back to pump) may be configured to occur in discreet data sets, e.g., no less than once per second.
According to some embodiments, the present invention may take the form of a system or apparatus, e.g., such as a wirelessly powered system, featuring:
a wirelessly powered combination isolation valve and check valve for a hydronic system, having
an onboard wireless power receiver configured to receive wireless power signaling, and provide power to energize the combination of the one or more sensors.
According to some embodiments, the system or apparatus may also include one or more of the following features:
The onboard wireless power receiver may be configured to receive the wireless power signaling in the form of radio frequency (RF) signaling and convert the RF signaling into direct current (DC) signaling for powering the combination of the one or more sensors.
The wirelessly powered system may include a remote transmitter configured to provide the RF signaling using cordless energy transmission.
The remote transmitter may be configured to provide the RF signaling either for continuously powering the combination of sensors, or for periodically powering the combination of sensors, or for powering the combination of sensors based upon the sensing and/or data transmission rate, or some combination thereof.
The combination of the one or more sensors may be powered by discrete energy packets for data collection and transmission within the wirelessly powered combination isolation valve and check valve.
The wirelessly powered system may include a wireless data transmission arrangement configured to receive the sensor signaling, and provide wireless data transmission sensor signaling containing information about the combination of the one or more pressure, temperature or flow measurements sensed of the fluid flow in the hydronic system; and the onboard wireless power receiver may be configured to provide power to energize the wireless data transmission arrangement and enable wireless data communication.
The onboard wireless power receiver may include some combination of the following circuitry: a wireless receiver configured to receive the wireless power signaling in the form of wireless RF power signaling; a wireless to DC power converter to convert the wireless RF power signaling into DC power signaling to energize the combination of the one or more sensors; and/or a DC power provisioning module configured to provide the DC power to the combination of the one or more sensors.
The one or more sensors may include DC sensors configured to receive DC signaling and sense the corresponding combination of the one or more pressure, temperature or flow measurements of the fluid flow in the hydronic system.
The one or more sensors may be completely sealed and enclosed, including hermetically, without the need for a coupling or connection to electrical power wiring.
The wirelessly powered system may be, or form part of, an HVAC hydronic system, e.g., including for use in residential, commercial and industrial applications.
This type of wirelessly powered system according to the present invention, e.g., for use in an HVAC system in residential, commercial and industrial applications, includes numerous advantages, as follows: For example, there is no need for physical access to a hardwired power source at or near the combination valve having the one or more sensors to power it up. There is also no need to physically run, connect or couple electrical wiring from any such hardwired power source to the combination valve. Since there is no electrical wiring running from any hardwired power source to the combination valve, this eliminates any adverse effects from associated electrical wiring clutter, e.g., that may arise when using such electrical wiring as set forth above. The elimination of the associated electrical wiring clutter also eliminates any electrical and mechanical safety hazards that may otherwise be caused or created by any such associated electrical wiring clutter in the HVAC system as a whole, e.g., especially over time.
By way of further example, since the sensors do not need to be coupled or connected by the electrical wiring to the hardwired power source, this elimination the need for any such electrical couplings or connections and also eliminates any and all of the problems over time due to moisture, dirt, ambient atmospheric conditions, and movement, including vibrations associated with HVAC applications and/or environments. The elimination of the need for electrical couplings or connections also allows for the ability to seal such sensors in a moisture-resistant enclosure, especially hermetically, if so desired depending on the application. Moreover, since the sensors do not need to be coupled or connected by the electrical wiring to the hardwired power source, this will likely substantially reduce and even eliminate damage to such sensors themselves over time due to moisture, dirt and ambient atmospheric conditions that can cause corrosion, e.g., from water and oxygen, especially if such sensors are not otherwise sealed (e.g. hermetically). Moreover still, such sensors may also not be compromised over time due to movement from any such electrical wiring being disturbed, pulled and ripped/broken in any such HVAC application and/or environments.
In conclusion, the removal of the aforementioned electrical hardwiring and associated physical couplings or connections provide a number of important short term and long term advantages and benefits to the overall HVAC system, especially when compared to systems like that disclosed in the aforementioned '582 patent. In view of this, the present invention provides a better way to provide power to operate combination isolation and check valves having such sensors.
The drawing includes the following Figures, not drawn to scale:
The Figures include reference numerals and lead lines, which are included to describe each Figure in detail below. In the drawing, similar elements in the various Figures are labeled with similar reference numerals and lead lines. Moreover, not every element is shown and/or labeled with a reference numeral and lead line in every Figure to reduce clutter in the drawing as a whole.
The wirelessly powered combination isolation valve and check valve 20 may be configured for a hydronic system generally indicated as 60 and shown in
The wirelessly powered combination isolation valve and check valve 20 may be configured to include the following:
The onboard wireless power receiver 40 may be configured to receive wireless power signaling SRF, and provide power (e.g., direct current (DC) signaling SDC) to energize, e.g. the combination of the one or more sensors 28, 30, 32.
According to some embodiments, the system or apparatus 10 may also include one or more of the following features:
The onboard wireless power receiver 40 may be configured to receive the wireless power signaling SRF in the form of radio frequency (RF) signaling and convert the RF signaling into the DC signaling SDC for powering the combination of the one or more sensors 28, 30, 32. In
The wirelessly powered system 10 may include the remote transmitter 68 (see
By way of example, the combination of the one or more sensors 28, 30, 32 may be powered by discrete energy packets for data collection and transmission within the wirelessly powered combination isolation valve and check valve 20. In other words, the pump controller 66 may be configured to provide control signaling to the remote transmitter 68 for powering each sensors 28, 30, 32 with a respective discrete energy packet for a respective data collection and transmission, e.g., depending on the application. In effect, the pump controller 66 and the remote transmitter 68 may be configured to selectively provide the respective discrete energy packets for selective data collection and transmission from selective sensors.
The wirelessly powered system 10 may include a wireless data transmission arrangement 34 configured to receive sensor signaling SP, ST, SF from the sensors 28, 30, 32, and provide the sensor signaling SP, ST, SF in the form of wireless data transmission sensor signaling SPTF containing information about the combination of the one or more pressure, temperature or flow measurements sensed of the fluid flow in the hydronic system 60.
By way of example, the onboard wireless power receiver 40 may include, or take the form of, a wireless receiver 40a configured to receive the wireless power signaling SRF in the form of wireless RF power signaling, as well as the status transmission signal SST from the controller 66 (
The one or more sensors 28, 30, 32 may be DC sensors configured to receive DC signaling SDC, sense the corresponding combination of the one or more pressure, temperature or flow measurements of the fluid flow in the hydronic system, and provide the sensor signaling SP, ST, SF, e.g., to the wireless data transmission arrangement 34.
According to some embodiments, the one or more sensors 28, 30, 32 may be completely sealed and enclosed, including hermetically, without the need for a coupling or connection to power wiring, so the sensor are not subject to, or compromised by, moisture, dirt and ambient atmospheric conditions that can cause malfunction and/or corrosion, e.g., from water and oxygen.
By way of example,
The hydronic system 60 includes the HVAC system 62, the pump 64 and the controller 66. As one skilled in the art would appreciate, HVAC systems like element 62 are known in the art, and the scope of the invention is not intended to be limited to any particular type or kind thereof either now known or later developed in the future. Moreover, pumps like element 64 and pump controllers like element 66 are also known in the art, and the scope of the invention is not intended to be limited to any particular type or kind thereof either now known or later developed in the future.
In
Wireless to DC power converters that receive radio frequency (RF) signaling and convert the same into direct current (DC) signaling are known in the art; and the scope of the invention is not intended to be limited to any particular type or kind thereof, e.g., either now known or later developed in the future. By way of example, the reader is referred to U.S. Pat. No. 8,461,817, which is hereby incorporated by reference in its entirety.
Wireless transmitters/receivers that transmit/receive wireless signaling are known in the art; and the scope of the invention is not intended to be limited to any particular type or kind thereof, e.g., either now known or later developed in the future.
It should be understood that, unless stated otherwise herein, any of the features, characteristics, alternatives or modifications described regarding a particular embodiment herein may also be applied, used, or incorporated with any other embodiment described herein. Also, the drawing herein is not necessarily drawn to scale.
Although the invention has been described and illustrated with respect to exemplary embodiments thereof, the foregoing and various other additions and omissions may be made therein and thereto without departing from the spirit and scope of the present invention.
This application claims benefit to provisional application Ser. No. 62/217,355, filed 11 Sep. 2015, which is hereby incorporated by reference in its entirety.
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