Abstract:
Disclosed herein is a heating, ventilating, and air conditioning (HVAC) unit and controller with memory provisions for storing, receiving, and transmitting customer equipment profiles. The controller may include a plurality of profiles that allows a selection thereof for restoration. A method for configuring HVAC equipment, including a customer profile database and efficiently transmitting unique customer and factory profiles, is also disclosed.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit of U.S. Provisional Application Ser. No. 61/180,405, filed by Mark Beste, et al., on May 21, 2009, entitled “Comprehensive HVAC Control System,” and incorporated herein by reference in its entirety. 
     
    
     TECHNICAL FIELD 
       [0002]    This application is directed, in general, to heating, ventilating and air conditioning (HVAC) systems and, more specifically, to configuring HVAC systems to include a customer profile. 
       BACKGROUND 
       [0003]    HVAC systems can be used to regulate the environment within an enclosed space. Typically, an air blower is used to pull air from the enclosed space into the HVAC system through ducts and push the air back into the enclosed space through additional ducts after conditioning the air (e.g., heating, cooling or dehumidifying the air). Various types of HVAC systems, such as roof top units, may be used to provide conditioned air for enclosed spaces. 
         [0004]    Many HVAC systems have been improved with various options to provide higher efficiency and better comfort. Accordingly, HVAC systems have typically become more complex resulting in a cost increase for installation and service. 
         [0005]    For example, set-up of commercial rooftop units can require over a hundred configuration changes and a high level of technical expertise. For installations and service, technicians need to know the unique settings required to properly configure an HVAC unit. The settings may affect operation of the HVAC unit such as cooling, heating, communications, alarms, set points and other additional parameters associated with the HVAC unit. In some installations having multiple rooftop units, additional labor may be required even if some of the rooftop units are to be configured the same. 
       SUMMARY 
       [0006]    In one aspect, an HVAC controller is disclosed that includes: (1) an interface configured to receive and transmit a customer equipment profile for the HVAC equipment, the customer equipment profile associated with a customer of the HVAC equipment, (2) a memory coupled to the interface and configured to store the customer equipment profile and (3) a processor configured to employ the customer equipment profile to configure the HVAC equipment, the customer equipment profile uniquely tailored for the HVAC equipment and an application of the HVAC equipment for the customer. 
         [0007]    In another aspect, a method for configuring HVAC equipment is disclosed that includes: (1) receiving a customer equipment profile for the HVAC equipment, the customer equipment profile associated with a customer of the HVAC equipment, (2) storing the customer equipment profile in a memory of an HVAC controller and (3) configuring the HVAC equipment employing the customer equipment profile, the customer equipment profile uniquely tailored for the HVAC equipment and an application of the HVAC equipment for the customer. 
         [0008]    In yet another aspect, a HVAC system is provided that includes: (1) a refrigeration circuit having at least one compressor, a corresponding evaporator coil and a corresponding condenser coil, (2) an indoor air blower configured to move air across the evaporator coil, (3) an outdoor fan configured to move air across the condenser coil and (4) a controller coupled to the refrigeration circuit, the indoor air blower and the outdoor fan. The controller including: (4A) an interface configured to receive and transmit a customer equipment profile for the HVAC system, the customer equipment profile associated with a customer of the HVAC system, (4B) a memory coupled to the interface and configured to store the customer equipment profile and (4C) a processor configured to employ the customer equipment profile to configure the HVAC system, the customer equipment profile uniquely tailored for the HVAC system and an application of the HVAC system for the customer. 
     
    
     
       BRIEF DESCRIPTION 
         [0009]    Reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 
           [0010]      FIG. 1  is a block diagram of an embodiment of an HVAC system constructed according to the principles of the disclosure; 
           [0011]      FIG. 2  is a block diagram illustrating a system having various components for delivering customer equipment profiles to an embodiment of a multi-unit HVAC system having HVAC controllers constructed according to the principles of the disclosure; 
           [0012]      FIG. 3  is a diagram of an embodiment of a HVAC controller constructed according to the principles of the disclosure; and 
           [0013]      FIG. 4  is a flow diagram of an embodiment of a method for configuring HVAC equipment carried out according to the principles of the disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0014]    This disclosure provides embodiments for configuring HVAC equipment during manufacturing, installation, service or repair. By employing the disclosed embodiments, the amount of time needed to configure HVAC equipment and the number of errors associated therewith may be reduced. As disclosed in different embodiments herein, configuration data for one HVAC unit may be used to configure other HVAC units at the same installation. Additionally, HVAC units may be at least partially pre-configured before being installed at a particular site. In other words, at least some configuration of HVAC units may be performed at the manufacturers. Furthermore, the HVAC units may be easily restored after an outage or after maintenance by employing stored configuration profiles located on an HVAC controller associated with the HVAC units. Accordingly, the cost for installation or service labor may be reduced. 
         [0015]    For configuring HVAC equipment, customer equipment profiles are employed that are uniquely tailored for the HVAC equipment and an application of the HVAC equipment for a customer. An application is an installation of the HVAC equipment at a site for the customer. For example, the application may be for a school, restaurant, grocery store, factory, etc. 
         [0016]    The customer equipment profiles include application-specific data for configuring HVAC equipment. The customer equipment profiles may include, for example, operating parameters, serial numbers and settings for the various components of an HVAC unit. As such, the customer equipment profiles may be unique profiles associated with a specific HVAC unit and a specific application of the HVAC unit for a customer. 
         [0017]    A controller for a HVAC unit is configured to receive, store and employ the customer equipment profiles for the HVAC unit. The profile data may be stored using encryption and accessed with security password or software keys. In addition to operating parameters and serial numbers, the customer equipment profiles may include: customer contact and preferred service information; factory installed options; field installed option list; setpoints related to heating cooling and unit controls; unit operating modes, sensor communications and network interface settings; date, time, author for last profile change; and overall notes for application usage. 
         [0018]      FIG. 1  is a block diagram of an embodiment of a HVAC system  100  constructed according to the principles of the disclosure. The HVAC system  100  includes a return duct  102 , a return plenum  104 , a supply duct  106  and a supply plenum  108 . Additionally, the HVAC system  100  includes a refrigeration circuit  110 , an indoor air blower  120 , an outdoor fan  130  and a HVAC controller  140 . The refrigeration circuit  110  includes a compressor system  112 , evaporator coils  114  and condenser coils  116 . Each of the components of the refrigeration circuit  110  is fluidly coupled together. The compressor system  112 , the evaporator coils  114 , and the condenser coils  116  each include two units as denoted by the numbers  1 - 2  in  FIG. 1 . The multiple units of the refrigeration system  110  represent two cooling stages of the HVAC system  100 . One skilled in the art will understand that this disclosure also applies to other HVAC embodiments having a single cooling stage or more than two cooling stages. 
         [0019]    One skilled in the art will also understand that the HVAC system  100  may include additional components and devices that are not presently illustrated or discussed but are typically included in an HVAC system, such as, a power supply, an expansion valve, a temperature sensor, a humidity sensor, etc. A thermostat (not shown) is also typically employed with the HVAC system  100  and used as a user interface. The various illustrated components of the HVAC system  100  may be contained within a single enclosure (e.g., a cabinet). In one embodiment, the HVAC system  100  is a rooftop unit. 
         [0020]    The refrigeration circuit  110 , the indoor air blower  120 , the outdoor fan system  130  and the humidity sensor  140  may be conventional devices that are typically employed in HVAC systems. At least some of the operation of the HVAC system  100  can be controlled by the HVAC controller  140  based on inputs from various sensors of the HVAC system  100  including a temperature sensor or a humidity sensor. For example, the HVAC controller  140  can cause the indoor air blower  120  to move air across the evaporator coils  114  and into an enclosed space. 
         [0021]    The HVAC controller  140  may include a processor, such as a microprocessor, configured to direct the operation of the HVAC system  100 . Additionally, the HVAC controller  140  may include an interface and a memory section coupled thereto. The interface and memory section may be configured to communicate (i.e., receive and transmit) and store a customer equipment profile for the HVAC system. The customer profile is associated with a customer of the HVAC system  100  and uniquely tailored for the HVAC system  100  and an application of the HVAC system  100  for the customer. The processor employs the customer equipment profile from the memory section to configure the HVAC system  100 . 
         [0022]    The interface may include multiple ports for transmitting and receiving data. The ports may be conventional receptacles for communicating data via various means such as, a portable memory device, a PC or portable computer or a communications network. The interface is coupled to the memory section, which may be a conventional memory that is constructed to store data and computer programs. 
         [0023]    As illustrated in  FIG. 1 , the HVAC controller  140  is coupled to the various components of the HVAC system  100 . In some embodiments, the connections therebetween are through a wired-connection. A conventional cable and contacts may be used to couple the HVAC controller  140  to the various components of the HVAC system  100 . In other embodiments, a wireless connection may also be employed to provide at least some of the connections. 
         [0024]      FIG. 2  is a block diagram illustrating a system  200  having various components for delivering customer equipment profiles to an embodiment of a multi-unit (i.e., N units) HVAC system having HVAC controllers constructed according to the principles of the disclosure. Each HVAC unit of the HVAC system  200  includes a designated controller as represented by unit controller # 1 , unit controller # 2  and unit controller #N in  FIG. 2 . The illustrated system  200  may be used to deliver customer equipment profiles during manufacturing (i.e., while still at the factory), during installation at an application for a customer, while performing service upgrades or during replacement repairs. The system  200  may be used to deliver the customer equipment profiles to only one controller of the HVAC system (such as unit controller # 1  in  FIG. 2 ). However, the illustrated connections for unit controller # 1  may apply to multiple of the HVAC controllers of the HVAC system to allow delivery of the customer equipment profile to multiple HVAC controllers of the HVAC system. As such, each specific unit controller of the HVAC system may have similar connections as those coupled to unit controller # 1 . 
         [0025]    The various components of the system  200  allow a customer to pre-configure the HVAC system using access to a customer profile database  210 . The customer can access the customer profile database  210  via a communications network, such as through an Internet server  220 , or through a direct connection, such as through a PC or portable computer  230 . 
         [0026]    The customer can generate a profile for the HVAC system that can be stored at the customer profile database  210 . Additionally, the customer may employ a profile from a set of general profiles. The general profiles may be stored on the customer profile database  210 . The customer can then either select the generated profile or a general profile for the HVAC system. The general profiles may be developed for typical customer applications and designed for improved efficiency or comfort. Example profiles include schools, grocery stores, malls or a mall store, a big box store, a restaurant, a factory, a retail store, etc. During a manufacturing stage, a factory programmer  240  (e.g., a computer) may be used to program at least one of the controllers (e.g., unit controller # 1 ) of the HVAC system with the selected customer equipment profile. Of course, all or multiple of the HVAC controllers for the HVAC system may be programmed during manufacturing. A final test performance may then be performed before shipping. If an HVAC system is in inventory, the corresponding HVAC controller or controllers can be reprogrammed with the selected customer equipment profile prior to shipping. An example of programming during manufacturing is represented by the darkened arrows of  FIG. 2 . 
         [0027]    During installation at the customer&#39;s site, testing of the HVAC system may be performed to assure proper operation if the customer equipment profile has already been programmed at the factory. Since factory programming was performed, the testing can be brief. Even if loaded at the factory, the customer equipment profile may be updated. The profile may be updated by employing a network controller  250  of a communications network, such as the Internet, to check a website of the customer for updates. The website may be a specific and secure website of the customer that is designated for such a purpose. Updates may be generated by the manufacturer or customer and provided to an HVAC controller, for example, via a modem  260 , or a service office  270 . E-mail may be used to provide update notices. 
         [0028]    If a customer equipment profile is unknown during installation, a service technician can configure one HVAC unit, record the profile to an external or removable device, such as, a PC or portable computer  280 , a portable memory device  290 , or the server  230 . The portable memory device  290  may be a “pen drive.” As is widely known, a pen drive, also called a “memory stick” or a “jump drive,” is a solid-state device containing nonvolatile computer memory, typically flash random-access memory (RAM), and a Universal Serial Bus (USB) port that allows external access to the nonvolatile memory. 
         [0029]    The customer equipment profile can then be used to program the additional HVAC controllers (i.e., unit controller # 2  through unit controller #N) at the specific customer application and may be used for similar future construction sites. By replicating the customer equipment profile, labor and errors may be reduced. Through the various interfaces of the HVAC controllers, a technician, customer or other authorized user may add notes to a customer equipment profile to assist with installation, identify service personnel, provide customer name, or provide reasons for settings of the customer equipment profile. 
         [0030]    While providing service, a manufacturer or customer can employ the various interfaces with the HVAC controller to improve an existing profile to provide, for example, better comfort or performance. Updated customer equipment profiles may be stored in the customer profile database  210  and retrieved for service. A notification may be sent to alert a service technician of an available upgrade. Retrieval of the upgrade may be through the illustrated system via an Internet download, a portable computer  280 , a portable memory device  290 , etc. The customer profile database  210  can be unit specific based on, for example, the serial number of the unit. As such, phone help assistants and service personnel can view unit specific settings and a history of changes. The unit specific information can assist in correctly solving problems in a minimum period of time. 
         [0031]    While performing replacement repairs, the customer equipment profile can be used to quickly change settings in a replacement part. The changes can be made at a manufacturer&#39;s parts warehouse, a supplier, service personnel offices or onsite at the HVAC unit. Programming in advance may reduce costs and the need for highly skilled service personnel at the site. Additionally, advance programming can reduce the exposure of service personnel to weather extremes while at the site. In the instance when an entire HVAC unit or controller is replaced, the customer equipment profile can be used to restore the previous configuration. 
         [0032]      FIG. 3  is a diagram of an embodiment of a HVAC controller  300  constructed according to the principles of the disclosure. The HVAC controller  300  is configured to control operations of an HVAC system. The HVAC controller  300  includes a communications interface  310 , a memory  320 , and a processor  330 . The HVAC controller  300  may also include additional components typically included within a controller for a HVAC system, such as a power supply or power port. 
         [0033]    The communications interface  310  may be a conventional device for transmitting and receiving data. The communications interface  310  may include an input port and an output port. In some embodiments, the input and output port may be separate ports. The input and output port, however, may be a single receptacle such as a universal serial bus connection (USB port). The communications interface  310  may include multiple communications ports that are configured to transmit and receive data via different modes. As noted, in one embodiment, the communications interface  310  may include a USB port. In another embodiment, the communications interface  310  may include a direct laptop connection. The communications interface  310  may also include a port for a communications network connection. The communications interface  310  may also include multiple types of communication ports. For example, the communications interface  310  may include a USB connection, a direct laptop connection and a communications network connection. Other combinations and other types of communications ports may also be included. 
         [0034]    The memory  320  may be a conventional memory. The memory  320  is coupled to the communications interface and is constructed to store at least one customer equipment profile. The memory  320  may also include a series of operating instructions that direct the operation of the processor  330  when initiated thereby. The series of operating instructions may represent algorithms that are used by the processor  330  to direct configuration of the HVAC system employing the customer equipment profile. The HVAC system may be a rooftop unit. The algorithm may be represented by the flow diagram illustrated in  FIG. 4 . 
         [0035]    The memory  320  may be partitioned into sections for storing various profiles for the HVAC equipment. A first memory section  322  is for a default factory profile. Service personnel may decide to revert to the settings of this profile if the settings of other profiles are suspect. A second memory section  324  is for a customer equipment profile. This is the profile that is used or was used for installation (i.e., the as installed profile). The customer equipment profile may be created during installation using, for example, the HVAC controller  300  or portable computer  280 . The HVAC controller  300  may automatically revert to the settings of this profile if memory corruption occurs. Additionally, a technician may select the customer equipment profile  324 . A third memory section  326  is for an operational profile. The HVAC controller  300  employs the operational profiles to determine operations for the HVAC system. In some embodiments, the customer equipment profile is the profile that is modified when needed. At reset, the customer equipment profile may then be loaded into the third memory section  326  and be used as the operational profile. Thus, the second and third memory sections  324 ,  326 , may include the same profile. As such, the operational profile may also reflect what is set at the customer location during installation and include settings that are unique to that unit&#39;s operation. 
         [0036]    The various profiles may be selected from a remote location employing network connections, such as, the Internet. Other networks may also be employed, such as a Building Automation and Control Network (BACnet) developed via the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), or a network that employs the LonTalk protocol from Echelon Corporation of San Jose, Calif. 
         [0037]    The processor  330  is configured to employ the customer equipment profile to configure the HVAC equipment. The customer equipment profile is uniquely tailored for the HVAC equipment and an application of the HVAC equipment for the customer. Configuration parameters and instructions may be transmitted via the output port of the communication interface  310 . 
         [0038]      FIG. 4  is a flow diagram of an embodiment of a method  400  for configuring an HVAC unit carried out according to the principles of the disclosure. The HVAC unit includes a refrigeration circuit, an indoor air blower system and an outdoor fan system. An HVAC controller such as described with respect to  FIG. 1 ,  FIG. 2  or  FIG. 3  may be used to perform the method  400 . The method  400  may represent an algorithm that is stored on a computer readable medium, such as a memory of an HVAC controller (e.g., the memory  320  of  FIG. 3 ) as a series of operating instructions that can direct the operation of a processor (e.g., the processor  330  of  FIG. 3 ) to configure the HVAC unit. The method  400  begins in a step  405 . 
         [0039]    In a step  410 , a customer equipment profile is received for the HVAC equipment. The customer equipment profile may be received at an HVAC controller via an interface of the controller. The customer equipment profile may be received by the HVAC controller before shipping of the HVAC equipment from a manufacturer. The HVAC equipment, therefore, can be configured for a particular installation before being shipped from the manufacturer. Alternatively, the HVAC controller is ready to configure the HVAC equipment during installation. Either way, configuration time for the HVAC equipment can be greatly reduced during installation. 
         [0040]    At least a portion of the customer equipment profile may be generated by the customer. Thus, the customer can provide details that are pertinent to their particular application. The customer equipment profile may be received from a HVAC equipment profile database. The customer equipment profile may be received via a factory controller programmer or a personal computer. In one embodiment, the customer equipment profile may be received over a computer network (i.e., a communications network). Alternatively, the customer equipment profile may be received from a portable memory device. 
         [0041]    Installation information for the application is also received in a step  420 . The installation information may be included as part of the customer equipment profile. The installation information may include customer contact information, overall notes for application usage, preferred service information, etc. 
         [0042]    In a step  430 , the customer equipment profile is stored in a memory of the HVAC controller. The memory may be coupled to the interface of the HVAC controller and store the customer equipment profile when received therefrom. The customer equipment profile may be stored in the memory including the installation information. 
         [0043]    The HVAC equipment is configured in a step  440  employing the customer equipment profile. The customer equipment profile is uniquely tailored for the HVAC equipment and an application of the HVAC equipment for the customer. The method  400  then ends in a step  450 . 
         [0044]    The above-described methods may be embodied in or performed by various conventional digital data processors, microprocessors or computing devices, wherein these devices are programmed or store executable programs of sequences of software instructions to perform one or more of the steps of the methods, e.g., steps of the method of  FIG. 4 . The software instructions of such programs may be encoded in machine-executable form on conventional digital data storage media, e.g., magnetic or optical disks, random-access memory (RAM), magnetic hard disks, flash memories, and/or read-only memory (ROM), to enable various types of digital data processors or computing devices to perform one, multiple or all of the steps of one or more of the above-described methods, e.g., one or more of the steps of the method of  FIG. 4 . Additionally, an apparatus, such as dedicated HVAC controller, may be designed to include the necessary circuitry to perform each step of the methods of  FIG. 4 . 
         [0045]    Those skilled in the art to which this application relates will appreciate that other and further additions, deletions, substitutions and modifications may be made to the described embodiments.