Pipeline bag

Abstract

The utility model provides a pipeline package which is used for connecting a heating, ventilation, air conditioning and refrigeration (HVACR) system to a building variable air volume (VAV) system. The conduit pack includes a housing containing a supply conduit and a return conduit. Each of the supply pipe and the return pipe includes a vent hole and a drain valve. The conduit package may be configured such that it is flipping and may be positioned on either side of a main unit of the HVACR system. The pipe pack may also include a heat exchanger configured to exchange heat between the HVACR system and a process fluid distributed to the building VAV system.

Description

Technical Field

[0001] The present disclosure relates to packaged ducting for connecting a heating, ventilation, air conditioning, and refrigeration (HVACR) system to a variable air volume (VAV) distribution system. Background Art

[0002] The piping for VAV HVACR systems is typically not provided in the factory unit, but is installed somewhere on site by the installer. The factory unit does not include supports for the piping. Additionally, the valves for the piping do not terminate on the unit controller at the factory. Furthermore, the field installed piping packages are often misplaced or installed on the incorrect unit. Furthermore, proper installation of the VAV piping is dependent on orientation. Utility Model Content

[0003] The present disclosure relates to packaged ducting for connecting a heating, ventilation, air conditioning, and refrigeration (HVACR) system to a variable air volume (VAV) distribution system.

[0004] By providing the piping for connecting the VAV system in a reversible piping package including a support and a housing, VAV installation in the field can be simplified, and VAV piping can be provided as part of a factory unit. The reversible piping package can be preassembled and, in some cases, included in the main unit of the HVACR system. By preassembling, the unit can reduce the need for complex assembly at the time of installation. Since it is reversible, the piping package can be adapted to various installation conditions depending on the site where the HVACR system is installed, such as being able to be installed on the left or right side of the main unit of the HVACR system. In addition, the housing of the package can support and protect the piping contained therein during transportation to the installation site. In addition, the use of such a package can allow the control valve actuator to be directly terminated on the controller of the HVACR system from the factory, or facilitate such connection through the interface of the piping package with the main unit, thereby also simplifying the electrical aspects of the installation of the HVACR system, reducing costs and opportunities for error.

[0005] In an embodiment, a duct package for a heating, ventilation, air conditioning and refrigeration (HVACR) system includes a supply pipe, a return pipe, and a housing, wherein the supply pipe includes a first discharge valve and a first vent, the return pipe includes a second discharge valve and a second vent, and the housing is configured to surround the supply pipe and the return pipe. The housing includes a first inlet opening and a second inlet opening, the first inlet opening is configured to allow access to the first discharge valve, and the second inlet opening is configured to allow access to the second discharge valve.

[0006] In an embodiment, the piping package further comprises a heat exchanger, wherein the supply pipe and the return pipe are each connected to a process fluid side of the heat exchanger.

[0007] In an embodiment, the housing has removable side panels.

[0008] In an embodiment, the return line comprises a control valve comprising an actuator.

[0009] In an embodiment, the piping package further comprises a bypass line extending from the supply pipe to the control valve.

[0010] In an embodiment, a heating, ventilation, air conditioning and refrigeration (HVACR) system includes a duct package. The duct package includes a supply pipe, a return pipe, and a housing, the supply pipe includes a first discharge valve and a first vent, the return pipe includes a second discharge valve and a second vent, and the housing is configured to surround the supply pipe and the return pipe. The housing includes a first inlet opening and a second inlet opening, the first inlet opening is configured to allow access to the first discharge valve, and the second inlet opening is configured to allow access to the second discharge valve.

[0011] In an embodiment, the HVACR system further includes a heat exchanger, wherein the supply line and the return line are each connected to a process fluid side of the heat exchanger.

[0012] In an embodiment, the housing has removable side panels.

[0013] In an embodiment, the return line comprises a control valve comprising an actuator.

[0014] In an embodiment, the actuator is terminated at a unit controller of the HVACR system.

[0015] In an embodiment, the HVACR system further includes a bypass line extending from the supply pipe to the control valve.

[0016] In an embodiment, the HVACR system further comprises a main unit and a control box, wherein the duct package is on the same side of the main unit as the control box.

[0017] In an embodiment, the HVACR system further includes a main unit and a control box, wherein the duct is wrapped on a side of the main unit opposite the control box.

[0018] In an embodiment, a method of installing a heating, ventilation, air conditioning, and refrigeration (HVACR) system on site includes installing a main unit of the HVACR system and installing a preassembled duct package. The preassembled duct package includes a supply pipe, a return pipe, and a housing, the supply pipe includes a first discharge valve and a first vent, the return pipe includes a second discharge valve and a second vent, and the housing is configured to surround the supply pipe and the return pipe. The housing includes a first inlet opening and a second inlet opening, the first inlet opening is configured to allow access to the first discharge valve, and the second inlet opening is configured to allow access to the second discharge valve. The method also includes connecting the supply pipe and the return pipe to a building variable air volume (VAV) system.

[0019] In an embodiment, the preassembled duct package is installed in a right-side orientation relative to the main unit of the HVACR system.

[0020] In an embodiment, the preassembled duct package is installed in a left-side orientation relative to the main unit of the HVACR system.

[0021] In an embodiment, the preassembled piping package includes a heat exchanger with supply and return pipes connected to the process fluid side of the heat exchanger.

[0022] In an embodiment, the method further comprises installing a heat exchanger and connecting each of the supply tube and the return tube to a process fluid side of the heat exchanger.

[0023] In an embodiment, the HVACR system includes a control box, and the pre-assembled duct package is installed on the same side of the main unit of the HVACR system as the control box.

[0024] In an embodiment, the HVACR system includes a control box, and the pre-assembled duct package is installed on a side of a main unit of the HVACR system opposite the control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A A perspective view of an HVACR system including a VAV duct package is shown according to an embodiment.

[0026] Figure 1B Shown according to Figure 1A A top view of an HVACR system including a VAV duct package.

[0027] Figure 1C Shown according to Figure 1A Side view of an HVACR system including a VAV duct package.

[0028] Figure 1D Shown according to Figure 1A A cross-sectional view of an HVACR system including a VAV duct package.

[0029] Figure 1E Shown according to Figure 1A A view of the HVACR system including the VAV duct package.

[0030] Figure 2 A schematic diagram of an HVACR system including a VAV duct package is shown according to an embodiment.

[0031] Figure 3 A flow chart of a method of installing an HVACR system according to an embodiment is shown.

[0032] Figure 4A A perspective view of an HVACR system including a VAV duct package is shown according to an embodiment.

[0033] Figure 4B Shown according to Figure 4A A top view of an HVACR system including a VAV duct package.

[0034] Figure 4C Shown according to Figure 4A Side view of an HVACR system including a VAV duct package.

[0035] Figure 4D Shown according to Figure 4A A cross-sectional view of an HVACR system including a VAV duct package.

[0036] Figure 5 An HVACR system including a VAV duct package is shown according to an embodiment. DETAILED DESCRIPTION

[0037] The present disclosure relates to packaged ducting for connecting a heating, ventilation, air conditioning, and refrigeration (HVACR) system to a variable air volume (VAV) distribution system.

[0038] Figure 1A A perspective view of an HVACR system including a VAV duct package according to an embodiment is shown. The HVACR system 100 includes a main unit 102 and a VAV duct package 104 including a duct housing 106. The duct housing 106 includes an entry opening (access port) 108 and a side panel 110. A heat exchanger 112 located within a heat exchanger housing 114 is also included in the HVACR system 100.

[0039] The main unit 102 includes at least some components of the HVACR system 100, such as a compressor (not shown), an expander (not shown), an ambient heat exchanger (not shown), and / or any other suitable components for an HVACR system. Examples of components of the HVACR system 100 included in the main unit 102 may be found at Figure 2 1 and described below. Control box 103 may be disposed externally to main unit 102. Control box 103 may include one or more controls for HVACR system 100, an interface thereof, and / or any other suitable components.

[0040] The VAV duct package 104 is a duct package configured to allow process fluid to circulate between the HVACR system 100 and a building VAV system (not shown) including a plurality of VAV terminals (not shown). When installed, the VAV duct package 104 is positioned on one side of the main unit 102. The VAV duct package 104 includes a duct housing 106. The duct housing 106 surrounds other components of the VAV duct package 104, such as, for example, a supply pipe 116, a return pipe 118, a first drain valve 120, a second drain valve 122, a first vent 124, a second vent 126, a bypass line 128, and a control valve 130 (e.g., Figure 1C etc.).

[0041] The heat exchanger 112 may be contained in the housing 114. The heat exchanger 112 may be connected to the main unit of the HVACR system 100 contained within the main unit 102 and to the VAV duct package 104. In an embodiment, the heat exchanger 112 is a water coil of the HVACR system. In an embodiment, the heat exchanger 112 is configured to allow heat to be added to and / or removed from a process fluid circulating through the VAV duct package 104 and the building VAV system (not shown). In an embodiment, the heat exchanger 112 is a heat exchanger that allows the working fluid of the HVACR system to exchange heat with the process fluid circulating through the VAV duct package 104 to the building VAV system. The heat exchanger 112 may be, for example, a heat exchange coil. In an embodiment, the heat exchanger 112 and / or the housing 114 are included in the main unit 102. In an embodiment, the heat exchanger 112 and / or the housing 114 are included in the VAV duct package 104.

[0042] Figure 1B Shows Figure 1A A top view of an HVACR system 100 includes a main unit 102 and a VAV duct package 104. Figure 1B In the top view of FIG. 1 , the access opening 108 on the top surface of the duct housing 106 is open, thereby allowing access to (or connection with) the first discharge valve 120. The access opening 108 is an opening that is configured to close an opening formed in the duct housing 106 at a position corresponding to the first discharge valve 120. The access opening 108 may be, for example, a hole, a window, etc. In an embodiment, the access opening 108 may include an access door. When in Figure 1B With the arrangement and orientation of the duct housing 106 shown, another entry opening (access port) may be provided in a corresponding location on an opposite wall of the duct housing (e.g., on the bottom of the duct housing 106). Figure 1BIn the top view of the HVACR system 100 in FIG. 1 , the VAV duct package 104 is shown as being arranged on the left side relative to the heat exchanger 112 of the HVACR system 100. In an alternative embodiment, the VAV duct package can be positioned on the left side of the heat exchanger 112. Figure 1B 1, thereby positioning the VAV duct package 104 in a right-side arrangement relative to the heat exchanger 112 of the HVACR system. In the right-side arrangement, the second inlet opening discussed above can be provided on the upwardly facing side of the duct housing 106.

[0043] Figure 1C Shows Figure 1A A side view of the HVACR system 100 is shown. Figure 1C , the side panel 110 is omitted to show the components of the VAV duct package 104 contained within the duct housing 106. The VAV duct package 104 includes a supply pipe 116, a return pipe 118, a first drain valve 120, a second drain valve 122, a first vent 124, a bypass line 128, and an actuator 132.

[0044] Supply pipe 116 is a pipe configured to deliver the process fluid circulated through VAV piping package 104 from heat exchanger 112 to the building VAV system. Supply pipe 116 is configured such that supply pipe 116 is suitable for use as an outlet line for directing process fluid from heat exchanger 112 to the building VAV system or as an inlet line for directing process fluid from the building VAV system to heat exchanger 112. Supply pipe 116 includes a first drain valve 120 and a first vent 124.

[0045] Return pipe 118 is a pipe configured to transport process fluid circulated through VAV piping package 104 from the building VAV system to heat exchanger 112. Return pipe 118 is configured such that return pipe 118 is suitable for use as an outlet line for directing process fluid from heat exchanger 112 to the VAV system. Return pipe 118 includes a second drain valve 122 and a second vent 126.

[0046] Figures 1A to 1D The embodiment shown in FIG. 1 is a three-way VAV piping package including a bypass line 128. The bypass line 128 is a fluid line that connects the supply line 116 to the return line 118 so that the process fluid can bypass the heat exchanger 112. A control valve 130 can be disposed where the bypass line 128 meets the return line 118. The control valve 130 ( Figure 1E ) can be used to control the flow and / or temperature of a process fluid. An actuator 132 can be provided to allow the control valve 130 to be manipulated, for example, based on a command from a controller included in the HVACR system 100 (e.g., a controller provided in the control box 103). It should be noted that although Figures 1A to 1D The three-way VAV duct package of FIG. 1 is shown in a left-side arrangement, but the VAV duct package 104 including the three-way VAV duct package can be flipped and connected to the HVACR system 100 in a right-side arrangement. The control valve 130 and the actuator 132 can extend horizontally from the return pipe 118 so that when the VAV duct package 104 is flipped between the left-side arrangement or the right-side arrangement, the control valve 130 and the actuator 132 do not interfere with other structures.

[0047] Figure 1D Shown according to Figure 1A A cross-sectional view of an HVACR system 100 including a VAV duct package 104 is shown. Figure 1D In the cross-sectional view of FIG. 1 , the VAV duct package 104 is shown within the duct housing 106. The VAV duct package 104 is in a left-hand arrangement relative to the heat exchanger 112 of the HVACR system 100. Figure 1D As can be seen in the cross-sectional view of , the VAV piping package 104 includes a supply pipe 116 , a return pipe 118 , a first discharge valve 120 , a second discharge valve 122 , a first vent 124 , a second vent 126 , a bypass line 128 , and a control valve actuator 132 .

[0048] Figure 1E Shown according to Figure 1A FIG. 1 is a diagram of an HVACR system 100 including a VAV duct package 104. Figure 1E In the view of FIG. 1 , the duct housing 106 of the VAV duct package 104 is shown as transparent to illustrate other features of the VAV duct package 104. Figure 1E , the VAV piping package has been flipped relative to the main unit 102, so that the VAV piping package 104 is arranged on the right side relative to the main unit 102. Figure 1E As can be seen from the view of FIG. 1 , the VAV piping package 104 includes a supply pipe 116 and a return pipe 118, wherein when the VAV piping package 104 has been Figures 1A to 1D When the left side arrangement is turned over, the supply pipe 116 is below the return pipe 118. Figure 1E In FIG. 1 , the control valve 130 controlled by the control valve actuator 132 is visible. Figure 1E , the first drain valve 120 , the second drain valve 122 , the second vent 126 , the bypass line 128 , and the control valve actuator 132 can also be seen within the duct housing 106 .

[0049] Figure 2A schematic diagram of an HVACR system 200 including a VAV piping package according to an embodiment is shown. The HVACR system 200 includes a working fluid loop 202, a process fluid piping connection 204, and a building VAV system 206. The working fluid loop 202 includes a compressor 208, a first heat exchanger 210, an expander 212, and a second heat exchanger 214. The process fluid piping connection includes an inlet line 216 configured to receive a process fluid from the building VAV system 206, an outlet line 218 configured to direct the process fluid to the building VAV system 206, a bypass line 220, and a control valve 222. The building VAV system 206 includes one or more VAV terminals 224. In an embodiment, one or more additional process fluid piping connections 204 are included, wherein each process fluid piping connection 204 is connected to a different VAV terminal 224.

[0050] The working fluid circuit 202 is configured to circulate the working fluid. The working fluid circuit 202 can be the main unit of the HVACR system 200. The working fluid can be, for example, any suitable refrigerant. The working fluid circuit 202 can include a compressor 208, which is configured to compress the working fluid. The compressor 208 can be any suitable compressor for compressing the working fluid. The working fluid from the compressor 208 is transferred to the first heat exchanger 210. The first heat exchanger 210 can be used as a condenser, wherein the compressed working fluid discharges heat to, for example, the surrounding environment. Then, the working fluid from the first heat exchanger 210 can be transferred to the expander 212. The expander 212 can be, for example, an expansion valve, an expansion plate, an expansion container, one or more expansion holes or any other known suitable structure for expanding the working fluid. In an embodiment, the expander 212 is an electronic expansion valve. The working fluid that has been expanded at the expander 212 can then be transferred to the second heat exchanger 214. The second heat exchanger 214 is a heat exchanger configured to exchange heat between the working fluid and a process fluid circulating through the process fluid piping connection 204 and the building VAV system 206. In an embodiment, the second heat exchanger 214 can be included in a pre-assembled unit with the rest of the working fluid loop 202 for installation. In an embodiment, the second heat exchanger 214 is included in an assembly with the process fluid piping connection 204 that is assembled to the other components of the working fluid loop 202 when the HVACR system 200 is installed. The unit controller 226 can also be included in the HVACR system 200, such as on or in a main unit that also includes the working fluid loop 202.

[0051] The process fluid piping connection 204 includes an inlet line 216 configured to receive process fluid from the building VAV system 206 and direct the received process fluid to the process fluid inlet of the second heat exchanger 214. The process fluid can then exchange heat with the working fluid of the working fluid loop 202. The process fluid can then exit the second heat exchanger 214 and enter the outlet line 218. The outlet line 218 is a fluid line configured to transport the process fluid from the second heat exchanger 214 to the inlet of the building VAV system 206. Optionally, a bypass line 220 can be provided that connects the inlet line 216 to the outlet line 218, bypassing the second heat exchanger 214. The flow through the bypass line 220 can be regulated by a control valve 222. In embodiments that include the bypass line 220, the control valve 222 can be positioned at the junction of the bypass line 220 and the outlet line 218. In embodiments, the bypass line 220 can be omitted. In embodiments where bypass line 220 is omitted, control valve 222 may control the flow and / or temperature of the process fluid through controlled outlet line 218 .

[0052] The building VAV system 206 includes a VAV terminal 224. The VAV terminal 224 is a terminal including one or more heat exchangers where a process fluid can exchange heat with air in or directed to a conditioned space. The VAV terminal 224 may also include ducting, fans, shutters, etc. to control the amount of airflow over the heat exchangers included therein. The building VAV system 206 may also include any suitable piping to transport the process fluid from the outlet line 218 to the VAV terminal 224 and return the process fluid from the VAV terminal 224 to the inlet line 216.

[0053] Figure 3 A flow chart of a method 300 of installing an HVACR system according to an embodiment is shown. The method 300 includes installing a main unit of the HVACR system at 302, installing a preassembled duct package at 304, and optionally installing a heat exchanger at 306. The method 300 may also include connecting the preassembled duct package to a building VAV system at 308. The method 300 may also include connecting a control valve actuator of the preassembled duct package to a controller disposed on the main unit of the HVACR system at 310.

[0054] The main unit of the HVACR system is installed at 302. The main unit may include, for example, some or all of the working fluid circuits, such as those described above and Figure 2202. The main unit may be provided as a pre-assembled package. In an embodiment, the main unit is a rooftop HVACR unit. Installing the main unit of the HVACR system at 302 may include moving the main unit of the HVACR system to a desired location. Installing the main unit of the HVACR system at 302 may include making any suitable utility connections, such as electrical connections.

[0055] At 304, the preassembled duct package is installed. Installing the preassembled duct package at 304 may include positioning the preassembled duct package relative to the main unit of the HVACR system at 302. In addition to the connection with the main unit of the HVACR system, the preassembled duct package may be delivered to the installation location already assembled at 304. The preassembled duct package may be, for example, as described above and in Figures 1A to 1C The VAV piping package 104 shown in FIG. 1 or as described above and in FIG. Figure 2 The VAV piping package 204 is shown in FIG.

[0056] Optionally, a heat exchanger may be installed at 306. The heat exchanger is a heat exchanger that allows heat exchange between the working fluid of the main unit of the HVACR system installed at 302 and the process fluid transported in part by the preassembled piping package installed at 304. Installing the heat exchanger at 306 may include positioning the heat exchanger in a suitable position relative to the main unit of the HVACR system and the preassembled piping package. Installing the heat exchanger at 306 may include making suitable connections between the fluid lines of the main unit of the HVACR system and / or the preassembled piping package. Alternatively, the heat exchanger that allows heat exchange between the working fluid of the main unit of the HVACR system and the process fluid may be included in the main unit of the HVACR system installed at 302 or in the preassembled piping package installed at 304. In such embodiments, installing the preassembled piping package at 304 may include connecting the heat exchanger to the working fluid circuit of the main unit and / or connecting the piping of the preassembled piping package to the heat exchanger.

[0057] At 308, the preassembled plumbing package may be connected to a building VAV system. The building VAV system may be, for example, the one described above and described in Figure 2 206, which includes terminal(s) 224 and suitable fluid connections for the terminals. Connections of the preassembled tubing package may include connecting one tubing of the preassembled tubing package to an inlet of the building VAV system, and connecting another tubing of the preassembled tubing package to an outlet of the building VAV system. The specific connections of the tubing of the preassembled tubing package to the inlet and outlet of the building VAV system may be based on the orientation in which the preassembled tubing package is installed at 304 and / or the connections made between the preassembled tubing package and the heat exchanger.

[0058] At 310, a control valve actuator included in the pre-assembled plumbing package may be connected to a controller included in a main unit of the HVACR system. The connection may be a direct wired connection of the control valve actuator to the controller. The connection may allow the controller to direct the operation of the control valve of the pre-assembled plumbing package.

[0059] Figure 4A A perspective view of an HVACR system 400 including a VAV duct package 404 is shown according to an embodiment. The HVACR system 400 includes a main unit 402 and a VAV duct package 404 including a duct housing 406. The duct housing 406 includes an entry opening (access port) 408 and a side panel 410. A heat exchanger 412 located within a heat exchanger housing 414 is also included in the HVACR system 400.

[0060] The main unit 402 is a housing that contains at least some of the components of the HVACR system 400, such as a compressor (not shown), an expander (not shown), an ambient heat exchanger (not shown), and / or any other suitable components for an HVACR system. Examples of components of the HVACR system 400 included in the main unit 402 may be found at Figure 2 4. The control box 403 may be disposed externally to the main unit 402. The control box 403 may include one or more controls for the HVACR system 400, an interface thereof, and / or any other suitable components.

[0061] The VAV duct package 404 is a duct package configured to allow process fluid to circulate between the HVACR system 400 and a building VAV system (not shown) including a plurality of VAV terminals (not shown). When installed, the VAV duct package 404 is positioned on one side of the main unit 402. The VAV duct package 404 includes a duct housing 406. The duct housing 406 surrounds other components of the VAV duct package 404, such as, for example, a supply pipe 416, a return pipe 418, a first drain valve 420, a second drain valve 422, a first vent 424, a second vent 426, a control valve actuator 428 (e.g., Figure 4C etc.).

[0062] The heat exchanger 412 may be contained in the housing 414. The heat exchanger 412 may be connected to a main unit of the HVACR system 400 contained within the main unit 402 and connected to the VAV duct package 404. In an embodiment, the heat exchanger 412 is a water coil of the HVACR system. In an embodiment, the heat exchanger 412 is configured to allow heat to be added to and / or removed from a process fluid circulating through the VAV duct package 404 and the building VAV system (not shown). In an embodiment, the heat exchanger 412 is a heat exchanger that allows the working fluid of the HVACR system to exchange heat with the process fluid circulating through the VAV duct package 404 to the building VAV system. The heat exchanger 412 may be, for example, a heat exchange coil. In an embodiment, the heat exchanger 412 and / or the housing 414 are included in the main unit 402. In an embodiment, the heat exchanger 412 and / or the housing 414 are included in the VAV duct package 404. In an embodiment, the heat exchanger 412 and / or the housing 414 are provided separately from the main unit 402 and the VAV plumbing package 404 .

[0063] Figure 4B Shows Figure 4A A top view of an HVACR system 400 includes a main unit 402 and a VAV duct package 404. Figure 4B In the top view of FIG. 4 , the access opening 408 on the top surface of the duct housing 406 is open, thereby allowing access to (or connection with) the first discharge valve 420. The access opening 408 is an openable door that is configured to close an opening formed in the duct housing 406 at a position corresponding to the second discharge valve 422. Figure 4B When the arrangement and orientation of the duct housing 406 is shown in FIG. 1 , another entry opening (access port, not shown) may be provided in a corresponding position on an opposite wall of the duct housing, for example, on the bottom of the duct housing 406 . Figure 4B In the top view of the HVACR system 400 in FIG. 4 , the VAV duct package 404 is shown as being arranged to the right relative to the heat exchanger 412 of the HVACR system 400. In alternative embodiments, the VAV duct package may alternatively be positioned to the right of the heat exchanger 412. Figure 4B 4. The VAV duct package 404 is positioned on the opposite side of the side shown in the figure, thereby positioning the VAV duct package 404 in a left-side arrangement relative to the heat exchanger 412 of the HVACR system. In the left-side arrangement, another inlet opening discussed above can be provided on the upwardly facing side of the duct housing 406.

[0064] Figure 4C Shown according to Figure 4A A side view of an HVACR system including a VAV duct package. Figure 4C4, side panel 410 is omitted to illustrate the components of VAV duct package 404 contained within duct housing 406. VAV duct package 404 includes supply pipe 416, return pipe 418, first drain valve 420, second drain valve 422, first vent 424, and control valve actuator 428.

[0065] Supply pipe 416 is a pipe configured to deliver the process fluid circulated through VAV piping package 404 from heat exchanger 412 to the building VAV system. Supply pipe 416 is configured such that supply pipe 416 is suitable for use as an outlet line for directing process fluid from heat exchanger 412 to the building VAV system or as an inlet line for directing process fluid from the building VAV system to heat exchanger 412. Supply pipe 416 includes a first drain valve 420 and a first vent 424.

[0066] Return pipe 418 is a pipe configured to transport the process fluid circulated through VAV piping package 404 from the building VAV system to heat exchanger 412. Return pipe 418 includes a second drain valve 422 and a second vent 426.

[0067] 4A to 4D The embodiment shown in is a bidirectional VAV piping package. In this arrangement, there is no bypass line (such as bypass line 128 described above). The control valve actuator 428 can control the control valve (such as the above and Figure 1E 130). A control valve actuator 428 may be used to operate the control valve to control the flow and / or temperature of a process fluid. The actuator 428 may be operated based on commands from a controller included in the HVACR system 100. It should be noted that although Figures 4A to 4D The bidirectional VAV duct package of is shown in a right side arrangement, but the VAV duct package 404 including the bidirectional VAV duct package can be flipped to be connected to the HVACR system 400 in a left side arrangement.

[0068] Figure 4D Shown according to Figure 4A A cross-sectional view of an HVACR system including a VAV duct package. Figure 4D In the cross-sectional view of FIG. 4 , the VAV duct package 404 is shown within the duct housing 406. The VAV duct package 404 is arranged to the right relative to the heat exchanger 412 of the HVACR system 400. Figure 4D As can be seen in the cross-sectional view of , the VAV piping package 404 includes a supply pipe 416 , a return pipe 418 , a first drain valve 420 , a second drain valve 422 , a second vent 426 , and a control valve actuator 428 .

[0069] Figure 5An HVACR system including a VAV duct package according to an embodiment is shown. HVACR system 500 includes a main unit 502, a control box 503, and a VAV duct package 504. VAV duct package 504 includes a duct housing 506. Duct housing 506 includes an access opening 508. Duct housing 506 may include a side panel, such as side panel 110 described above and shown in FIG. 1, although this is not limited to the side panel 110 described above and shown in FIG. 1. Figure 5 A heat exchanger 510 located within a heat exchanger housing 512 is also included in the HVACR system 500. Figure 5 In the illustrated embodiment, the main unit 502 has a relatively short overall length so that if the control box 503 and the duct housing 506 are both placed on the same side of the main unit 502, the control box 503 and the duct housing 506 will interfere with each other. Figures 1A to 1D Left-side orientation or Figure 1E and 4A 4D) so that the duct housing 506 is on the side of the main unit 502 opposite the control box 503. Figures 1A to 1E and 4A to 4D In the embodiment of the main unit 102 and 402 shown in FIG, the corresponding duct housing 106, 406 can be placed on the same side of the main unit 102, 402 as the corresponding control box 103, 403 or on the opposite side.

[0070] aspect:

[0071] It should be understood that any of aspects 1-5 may be combined with any of aspects 6-13 or any of aspects 14-20. It should be understood that any of aspects 6-13 may be combined with any of aspects 14-20.

[0072] Aspect 1: A piping package for a heating, ventilation, air conditioning and refrigeration system, comprising:

[0073] a supply pipe comprising a first discharge valve and a first vent;

[0074] a return pipe including a second discharge valve and a second vent; and

[0075] A housing is configured to surround the supply tube and the return tube, the housing including a first access opening configured to allow access to the first discharge valve and a second access opening configured to allow access to the second discharge valve.

[0076] Aspect 2: The piping package according to Aspect 1 further includes a heat exchanger, wherein the supply pipe and the return pipe are each connected to the process fluid side of the heat exchanger.

[0077] Aspect 3: The piping package according to any one of aspects 1 to 2, wherein the housing has a removable side panel.

[0078] Aspect 4: A piping package according to any one of Aspects 1 to 3, wherein the return pipe comprises a control valve, and the control valve comprises an actuator.

[0079] Aspect 5: The piping package according to Aspect 4 further includes a bypass line extending from the supply pipe to the control valve.

[0080] Aspect 6: A heating, ventilation, air conditioning and refrigeration (HVACR) system, comprising a duct package, the duct package comprising:

[0081] a supply pipe comprising a first discharge valve and a first vent;

[0082] a return pipe including a second discharge valve and a second vent; and

[0083] A housing is configured to surround the supply tube and the return tube, the housing including a first access opening configured to allow access to the first discharge valve and a second access opening configured to allow access to the second discharge valve.

[0084] Aspect 7: The HVACR system according to Aspect 6 further includes a heat exchanger, wherein the supply pipe and the return pipe are each connected to the process fluid side of the heat exchanger.

[0085] Aspect 8: An HVACR system according to any one of Aspects 6 to 7, wherein the housing has a removable side panel.

[0086] Aspect 9: The HVACR system of any one of Aspects 6 to 8, wherein the return line comprises a control valve comprising an actuator.

[0087] Aspect 10: The HVACR system of Aspect 9, wherein the actuator is terminated at a unit controller of the HVACR system.

[0088] Aspect 11: The HVACR system according to any one of aspects 9 to 10 further includes a bypass line extending from the supply pipe to the control valve.

[0089] Aspect 12: The HVACR system according to any one of aspects 6 to 11, further comprising a main unit and a control box, wherein the pipe package and the control box are on the same side of the main unit.

[0090] Aspect 13: The HVACR system according to any one of Aspects 6 to 11, further comprising a main unit and a control box, wherein the duct package is on a side of the main unit opposite to the control box.

[0091] Aspect 14: A method of installing a heating, ventilation, air conditioning, and refrigeration (HVACR) system at a location, comprising:

[0092] installing a main unit of the HVACR system;

[0093] Install a preassembled piping package, the preassembled piping package comprising:

[0094] a supply pipe comprising a first discharge valve and a first vent;

[0095] a return pipe including a second discharge valve and a second vent; and

[0096] a housing configured to surround the supply tube and the return tube, the housing including a first access opening configured to allow access to the first discharge valve and a second access opening configured to allow access to the second discharge valve; and

[0097] The supply duct and the return duct are connected to a building variable air volume (VAV) system.

[0098] Aspect 15: A method according to Aspect 14, wherein the preassembled duct package is installed in a right-side orientation relative to the main unit of the HVACR system.

[0099] Aspect 16: The method according to any of Aspects 14-15, wherein the preassembled duct package is installed in a left-side orientation relative to the main unit of the HVACR system.

[0100] Aspect 17: A method according to any one of Aspects 14-16, wherein the preassembled piping package includes a heat exchanger, wherein the supply pipe and the return pipe are connected to the process fluid side of the heat exchanger.

[0101] Aspect 18: The method according to any one of Aspects 14-17 further includes installing a heat exchanger and connecting each of the supply pipe and the return pipe to the process fluid side of the heat exchanger.

[0102] Aspect 19: The method according to any of Aspects 14-18, wherein the HVACR system includes a control box and the pre-assembled duct package is installed on the same side of the main unit of the HVACR system as the control box.

[0103] Aspect 20: The method according to any one of aspects 14-18, wherein the HVACR system includes a control box and the pre-assembled duct package is installed on a side of the main unit of the HVACR system opposite the control box.

[0104] The examples disclosed in this application are considered to be illustrative and not restrictive in all aspects. The scope of the utility model is indicated by the appended claims rather than by the preceding description; and all changes falling within the meaning and range of equivalents of the claims are intended to be included in the scope of the utility model.

Claims

1. A pipe package, the pipe package is used for heating, ventilation, air conditioning and refrigeration systems, characterized in that: The pipeline package includes: a supply pipe comprising a first discharge valve and a first vent; a return pipe including a second discharge valve and a second vent; and A housing is configured to surround the supply tube and the return tube, the housing including a first access opening configured to allow access to the first discharge valve and a second access opening configured to allow access to the second discharge valve.

2. The pipeline package according to claim 1, characterized in that: Also included is a heat exchanger, wherein the supply tube and the return tube are each connected to a process fluid side of the heat exchanger.

3. The pipeline package according to claim 1, characterized in that: The housing has removable side panels.

4. The pipeline package according to claim 1, characterized in that: The return line includes a control valve including an actuator.

5. The pipeline package according to claim 4, characterized in that: Also included is a bypass line extending from the supply pipe to the control valve.

6. The pipe package according to claim 1, characterized in that: The duct package is integrated into the heating, ventilation, air conditioning and refrigeration system.

7. The pipe package according to claim 6, characterized in that: The return line includes a control valve, the control valve includes an actuator, and the actuator is terminated to a unit controller of the HVACR system.

8. The pipe package according to claim 6, characterized in that: The HVAC system further comprises a main unit and a control box, and wherein the piping package is located on the same side of the main unit as the control box.

9. The piping package according to claim 6, characterized in that: The HVAC system further comprises a main unit and a control box, and wherein the piping package is located on a side of the main unit opposite to the control box.

10. The piping package according to claim 1, characterized in that: The duct package is a variable air volume duct package and / or the duct package is reversible relative to the main unit of the HVACR system.

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