SYSTEMS AND METHODS FOR HEAT PUMP SYSTEMS FOR CHARGE MANAGEMENT

Abstract

Systems and methods for heating and cooling an interior space using a heat pump and an air duct system are provided. The heat pump system may be a split system with an indoor heat exchanger and an outdoor heat exchanger. The outdoor heat exchanger may have a volume capacity for holding a fluid such as refrigerant that is significantly larger than that of the indoor heat exchanger. In the heating cycle, the fluid may backup in the heat pump due to the difference in volume capacity between the heat exchangers. To accommodate the excess fluid, the heat pump may include a charge storage vessel. In one example, during a heating cycle, the charge storage vessel and the indoor coils may together serve as the condenser. The charge storage vessel may then prevent and/or relieve pressure build up in the compressor, which could negatively impact efficiency of the heat pump.

Description

TECHNICAL FIELD

The present disclosure is generally in the field of heat pumps. For example, systems and methods are provided herein for heat pumps with dynamic control of charge.

BACKGROUND

Heat pump systems heat and cool fluids such as refrigerant for heat exchange with interior spaces (e.g., for residential and commercial use). For example, a heat pump system may include condenser coils and evaporator coils as well as a reversing valve for reversing the direction of the refrigerant to transition between cooling cycles and heating cycles. When the reversing valve is in a first direction, the heat pump system may cause heating for conditioning the indoor space. When desirable, the reversing valve may be actuated to transition to a second direction to cause the heat pump system to move the refrigerant in a reverse direction to cause cooling of the indoor space.

Various types of heat pump systems are known and useful in different settings. For example, a split heat pump system may include an indoor unit or portion and an outdoor unit or portion and may include fluid lines (e.g., refrigerant lines) connecting both units for circulating the refrigerant throughout the system. A set of indoor coils may be included in the indoor unit and outdoor coils may be included in the outdoor unit. Due to space restrictions, the indoor coils often have volumes significantly less than the volumes of outdoor coils, where space is not as limited. Packaged heat pump systems, with all components positioned within one unit, often similarly include coils of differing sizes.

In a heating cycle in a split system, for example, as a result of the outdoor coils having a larger volume capacity than the indoor coils, excess fluid may accumulate at the indoor coil. As a result, fluid (e.g., refrigerant) can back up in the indoor coil due to the smaller volume of the indoor coil. Due to the backed up fluid, pressure may build up on the compressor. As pressure increases in the compressor, efficiency decreases and thus heat pump system drops in efficiency.

Accordingly, there is a need for improved methods and systems for split, packaged, and other ducted heat pump systems for dynamically managing charge to improve efficiency of the heat pump system.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic illustration of a heat pump system with a charge storage vessel in accordance with one or more example embodiments of the disclosure.

FIGS. 2A-2B are schematic illustrations of a heat pump system with a charge storage vessel in a cooling cycle and a heating cycle in accordance with one or more example embodiments of the disclosure.

FIGS. 3A-3B are schematic illustrations of a heat pump system with a charge storage vessel including a check valve and a three-valve in a cooling cycle and a heating cycle in accordance with one or more example embodiments of the disclosure.

FIGS. 4A-4B are schematic illustrations of a heat pump system with a charge storage vessel including a three-valve and a solenoid valve in a cooling cycle and a heating cycle in accordance with one or more example embodiments of the disclosure.

FIGS. 5A-5B are schematic illustrations of a heat pump system with a charge storage vessel including two solenoid valves and a bleeder cap tube a in a cooling cycle and a heating cycle in accordance with one or more example embodiments of the disclosure.

DETAILED DESCRIPTION

Improved heat pump systems have been developed which are capable of dynamically controlling charge in a ducted heat pump system (e.g., split system) to improve efficiency in the heat pump system. The heat pump system may have two heat exchangers having different volume capacities. The heat pump system may be any ducted heat pump system which may include a heat exchanger (e.g., condenser or evaporator coils) in close proximity with at least one duct for heating or cooling air that will be circulated through an indoor structure (e.g., residential or commercial structure) for heating or cooling the structure.

In one example, the heat pump system may be a split heat pump system having one unit or compartment positioned within the structure and another unit or compartment positioned outside of the structure. The indoor unit may house a plurality of heat exchanging coils (e.g., condenser or evaporator coils) and optionally an expansion valve. The outdoor unit may house a plurality of heat exchanging coils (e.g., condenser or evaporator coils) and a compressor.

A refrigerant may be circulated amongst the components of the heat pump via fluid lines to cause the condenser coils to generate heat and/or the evaporator coils to cool. As the coils inside of the structure may have a volume smaller than that of the coils outside of the structure (e.g., due to space constraints), charge may backup during operation (e.g., during heating mode). To account for the excess fluid, a charge storage vessel may be connected to the indoor coil, reducing the load on the compressor. It is understood that the heat pump system may alternatively be a packaged unit with all components within a single housing or compartment. It is further understood that the compressor may be a variable speed compressor and the excess fluid may be selectively routed to and/or unloaded from the charge storage vessel based on a speed and/or setting of the variable speed compressor.

Referring now to FIG. 1, a heat pump system including a charge storage vessel is illustrated. As shown in FIG. 1, heat pump system 100 may include heat pump 102, and/or server 104, and remote controller 106. Heat pump 102 may be a split or packaged heat pump, which may be connected to air duct 110, which may be any suitable type of air duct. Air duct 110 may extend throughout structure 105, which may be a residential or commercial structure (e.g., an apartment building or office building).

Heat pump 102 may include controller 108, which may control operation of heat pump 102. Controller 108 may be any type of computing device with a processor. Controller 108 may communicate with remote controller 106 and/or remote server 104 via any well-known wired or wireless system (e.g., Bluetooth, Bluetooth Low Energy (BLE), near field communication protocol, Wi-Fi, cellular network, etc.). Remote controller 106 and remote server 104 may similarly communicate with one another.

Remote controller 106 may be any type of computing device with a processor (e.g., tablet, laptop, desktop computer, smart phone or the like and/or may include one or more buttons, touch screens, or other user input mechanisms). For example, remote controller 106 may be used to communicate a desired temperature setting to controller 108. Remote server 104 may be one or more servers or other computing device with one or more processor.

Remote server 104 may communicate instructions to remote controller 106 to be relayed to controller 108 or may directly communicate with controller 108. For example, remote server 104 may send operational instructions, settings, or other information to controller 108 for operation of heat pump 102. Controller 108 may be responsible for controlling the components of heat pump 102 to transition between heating and cooling cycles.

Heat pump 102 may include housing 112 and housing 114 and thus may be a split system. Alternatively, heat pump 102 may be a packaged system with all components within one housing. Housing 112 may be positioned within structure 105 and housing 114 may be positioner near but outside of structure 105. The components within housing 114 and housing 112 may be connected to one another via fluid lines 116. Fluid lines 116 may guide a suitable refrigerant between components of heat pump 102.

Housing 112 may house coils 120 which may be a plurality of coils through which the fluid may flow. Coils 120 may exchange heat with the immediate environment. Coils 120 may heat or cool the air depending on whether coils are in acting as a condenser (e.g., in condenser mode) or an evaporator (e.g., in evaporator mode). The air that has been heated or cooled may be caused to enter air duct 110 by blower 112. For example, blower 122 may push the air conditioned by coils 120 into air duct 110.

Coils 120 may be connected to charge storage vessel 124 which may be designed to receive fluid from coils 120 and/or from fluid lines 116 and may store the fluid in a charge storage vessel. For example, charge storage vessel 124 may hold a set volume of fluid (e.g., liquid and/or gas). Charge storage vessel 124 may be cylindrical, cubical, and/or any other shape. In one example, charge storage vessel 124 may be similar to fluid lines 116 but may have a larger diameter.

Charge storage vessel 124 may be adjacent along flow lines 116 to expansion valve 126, which may cause a pressure change in the refrigerant. Expansion valve 126 may optionally be included in housing 112. Additionally, fluid may optionally bypass expansion valve 126 in one cycle (e.g., heating cycle) via one or more valves (e.g., check valves) and/or a bypass line, for example, but may traverse expansion valve 126 in another cycle (e.g., cooling cycle).

Housing 114, which may be the outdoor housing, may include coils 130, which may be a plurality of coils that may serve as a heat exchanger such as a condenser or evaporator. Coils 130 may be connected to compressor 128, which also may be connected to coils 120 (e.g., via fluid lines 116). Compressor 128 may be any suitable compressor to cause the refrigerant to transition into a high pressure gas.

Housing 114 may further house expansion valve 132 which may be connected to coils 130 via fluid lines 116 and may be the same as or similar to expansion valve 126. Fluid may optionally bypass expansion valve 132 in one cycle (e.g., cooling cycle) via one or more valves and/or a bypass line, for example, but may traverse expansion valve 132 in another cycle (e.g., cooling cycle). Housing 114 may also house fan 134 which may be any suitable fan or blower and may facilitate heat transfer between coils 130 and the surrounding environment.

As shown in FIG. 1, coils 130 may have a greater volume than coils 120 and thus may hold a greater volume of fluid. Fluid may be heated to a high pressure gas by compressor 128, may be guided to coils 120 for heat transfer, and may be guided from coils 120 to charge storage vessel 124 for storage of at least some fluid to avoid fluid backup due to the smaller volume capacity of coils 120 as compared to coils 130. Fluid may then traverse an expansion valve (e.g., expansion valve 132) and may be guided into coils 130 for heat exchange and finally may be guided back into compressor 128 (e.g., via fluid lines 116).

In the heating cycle, the fluid exiting coils 120 may be in a liquid or partial liquid phase, with little or no compressibility. As a result, the excess fluid due to the larger volume capacity of coil 130 may be guided into charge storage container 124 to avoid back up on the fluid, which could cause compressor 128 to operate inefficiently. In this manner, charge storage vessel 124 together with coils 120 may collectively serve as a condenser heat exchanger in a heating cycle.

In one example, the volume capacity for holding fluid in coils 130 and coils 120 is a ratio of 2:1. In another example, the volume ratio of coils 130 to 120 is greater than 2:1. For example, the volume ratio of coils 130 to 120 is between 2:1 and 3:1, 3:1, between 3:1 and 4:1,4:1, between 4:1 to 5:1, 5:1, or greater than 5:1. It is understood that the volume capacity of each of coils 130 and coils 120 is the volume of fluid that each of coils 130 and coils 120 may hold.

Referring now to FIGS. 2A-B, schematic illustrations of a heat pump system with a charge storage vessel in a cooling cycle and a heating cycle are illustrated. For example, heat pump 202 may be the same as or similar to heat pump 102 of FIG. 1. Heat pump 202 may include coils 220, coils 230, charge storage vessel 224, expansion valve 226, expansion valve 232, and compressor 228, which may be the same as or similar to coils 120, coils 130, charge storage vessel 124, expansion valve 126, expansion valve 132, and compressor 128 of FIG. 1, respectively.

Heat pump 202 may include reversing valve 231 which may be any suitable reversing valve (e.g., a four-way valve) reversing the direction of flow of heat pump 202 between a cooling cycle and a heating cycle. The components of heat pump 202 may be connected by fluid lines 216, which may be the same as or similar to fluid lines 116 of FIG. 1.

Referring now to FIG. 2A, a cooling cycle of heat pump 202 is illustrated in which coils 220 serve as evaporator coils and coils 230 serve as condenser coils. In the cooling cycle expansion valve 232 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 226).

In one example, charge vessel 224 may be positioned in an indoor unit (e.g., with coils 220). It is understood that charge storage vessel 224 may be a separate container (e.g., cylindrical container) or may be a fluid line between coils 220 and expansion valve 226 having a diameter larger than a diameter of other fluid lines 216 in heat pump 202. In one example, the charge storage vessel may be bypassed in the cooling cycle (e.g., using a check valve and a bypass fluid line).

Referring now to FIG. 2B, a heating cycle of heat pump 202 is illustrated in which coils 220 serve as condenser coils and coils 230 serve as evaporator coils. For example, reversing valve 231 may be actuated to transition from a cooling cycle to a heating cycle. In the heating cycle, expansion valve 226 may be bypassed (e.g., using a check valve and a bypass fluid line) such that the fluid only traverses one expansion valve (e.g., expansion valve 232).

In the heating cycle, fluid in the form of at least partially liquid may backup due to the difference in volume capacity between coils 220 and coils 230. To avoid pressure build up in heat pump 202 and specifically in compressor 228 due to the incompressibility of liquid fluid, charge storage vessel 224 may receive the backed up fluid, adding volume capacity to coils 220. In this manner coils 220 together with charge storage vessel 224 may serve as the condenser.

Referring now to FIGS. 3A-3B, schematic illustrations of a heat pump system with a

charge storage vessel including a check valve and a three-valve in a cooling cycle and a heating cycle are illustrated. For example, heat pump 302 may be the same as or similar to heat pump 102 of FIG. 1. Heat pump 302 may include coils 320, coils 330, charge storage vessel 324, expansion valve 326, expansion valve 332, and compressor 328, which may be the same as or similar to coils 120, coils 130, charge storage vessel 124, expansion valve 126, expansion valve 132, and compressor 128 of FIG. 1, respectively.

Heat pump 302 may further include valve 334, which may be any suitable three-way valve, and valve 336, which may be any suitable check valve. Charge storage vessel 334 may be positioned between expansion valve 326 and expansion valve 332. For example, charge storage vessel 334 may be positioned along bypass line 317 of fluid lines 316 and in the cooling cycle, charge storage vessel 334 may be bypassed. Charge storage vessel 334 may be positioned in close proximity to fluid lines extending between coils 330 and compressor 328 (e.g., the compressor suction line) permitting heat transfer between such line and the charge storage vessel.

Heat pump 302 may include reversing valve 331 which may be any suitable reversing valve (e.g., a four-way valve) reversing the direction of flow of heat pump 302 between a cooling cycle and a heating cycle. The components of heat pump 302 may be connected by fluid lines 316, which may be the same as or similar to fluid lines 116 of FIG. 1.

Referring now to FIG. 3A, a cooling cycle of heat pump 302 is illustrated in which coils 320 serve as evaporator coils and coils 330 serve as condenser coils. In the cooling cycle, expansion valve 332 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 326).

In the cooling cycle, the charge storage vessel may be bypassed. For example, valve 336 may prevent fluid from entering charge storage vessel 324. When transitioning from the heating cycle to the cooling cycle, valve 334 may be left open such that bypass line 317 is open to drain excess fluid in charge storage vessel 324 from the heating cycle. It is understood that heat transfer between charge storage vessel 324 and one or more lines of fluid lines 316 (e.g., compressor suction line) may drive excess fluid out of charge storage vessel 224.

Once charge storage vessel 324 is discharged, valve 336 may actuate to once again isolate charge storage vessel 324 during the cooling cycle. Charge storage vessel 324 may be permitted to discharge for a set period of time (e.g., 1, 2 or 3 minutes). Alternatively, pressure may be monitored in heat pump 302, and the discharge time may be determined based on sensed pressure in heat pump 302.

Referring now to FIG. 3B, a heating cycle of heat pump 302 is illustrated in which coils 320 serve as condenser coils and coils 330 serve as evaporator coils. For example, reversing valve 331 may be actuated to transition from a cooling cycle to a heating cycle. In the heating cycle, expansion valve 326 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 332).

In the heating cycle, fluid in the form of at least partially liquid may backup due to the difference in volume capacity between coils 320 and coils 330. To avoid pressure build up in heat pump 302 and specifically compressor 328 due to the incompressibility of liquid fluid, valves 336 and 334 may permit fluid to enter charge storage vessel 324 to receive backed up fluid, adding volume capacity to coils 320. In this manner coils 320 and charge storage vessel 324 may serve as the condenser.

Referring now to FIGS. 4A-4B, schematic illustrations of a heat pump system with a charge storage vessel including a three-valve and a solenoid valve in a cooling cycle and a heating cycle are illustrated. For example, heat pump 402 may be the same as or similar to heat pump 102 of FIG. 1. Heat pump 402 may include coils 420, coils 430, charge storage vessel 424, expansion valve 426, expansion valve 432, and compressor 428, which may be the same as or similar to coils 120, coils 130, charge storage vessel 124, expansion valve 126, expansion valve 132, and compressor 128 of FIG. 1, respectively.

Heat pump 402 may further include valve 434, which may be any suitable three-way valve, and valve 436, which may be any suitable solenoid valve. Charge storage vessel 424 may be between expansion valve 426 and expansion valve 432. For example, charge storage vessel 434 may be positioned along bypass line 417 of fluid lines 416 and in the cooling cycle, charge storage vessel 434 may be bypassed. Charge storage vessel may be positioned in close proximity to fluid lines extending between coils 430 and compressor 428 (e.g., the compressor suction line) permitting heat transfer between such line and the charge storage vessel.

Heat pump 402 may include reversing valve 430 which may be any suitable reversing valve (e.g., a four-way valve) reversing the direction of flow of heat pump 402 between a cooling cycle and a heating cycle. The components of heat pump 402 may be connected by fluid lines 416, which may be the same as or similar to fluid lines 116 of FIG. 1.

Referring now to FIG. 4A, a cooling cycle of heat pump 402 is illustrated in which coils 420 serve as evaporator coils and coils 430 serve as condenser coils. In the cooling cycle expansion valve 432 may be bypassed (e.g., using a check valve and a bypass fluid line) such that the fluid only traverses one expansion valve (e.g., expansion valve 426).

In the cooling cycle, the charge storage vessel 424 may be bypassed. For example, valve 436 may prevent fluid from entering charge storage vessel 424. When transitioning from the heating cycle to the cooling cycle, valve 334 may be left open such that bypass line 417 is open to drain excess fluid in charge storage vessel 424 from the heating cycle. It is understood that heat transfer between charge storage vessel 424 and one or more lines of fluid lines 416 (e.g., compressor suction line) may drive excess fluid out of charge storage vessel 424.

Once charge storage vessel 424 is discharged, valve 436 may actuate to once again isolate charge storage vessel 424 during the cooling cycle. Charge storage vessel may be permitted to discharge for a set period of time (e.g., 1, 2 or 3 minutes). Alternatively, pressure may be monitored in heat pump 402, and the discharge time may be determined based on sensed pressure in heat pump 402.

Referring now to FIG. 4B, a heating cycle of heat pump 402 is illustrated in which coils 420 serve as condenser coils and coils 430 serve as evaporator coils. For example, reversing valve 431 may be actuated to transition from a cooling cycle to a heating cycle. In the heating cycle, expansion valve 426 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 432).

In the heating cycle, fluid in the form of at least partially liquid may backup due to the difference in volume capacity between coils 420 and coils 430. To avoid pressure build up in heat pump 402 and specifically compressor 428 due to the incompressibility of liquid fluid, valves 436 and 434 may permit fluid to enter charge storage vessel 424 to receive backed up fluid, adding volume capacity to coils 420. In this manner coils 420 and charge storage vessel 424 may serve as the condenser.

Referring now to FIGS. 5A-5B, schematic illustrations of a heat pump system with a charge storage vessel including two solenoid valves and a bleed cap tube in a cooling cycle and a heating cycle are illustrated. For example, heat pump 502 may be the same as or similar to heat pump 102 of FIG. 1. Heat pump 502 may include coils 520, coils 530, charge storage vessel 524, expansion valve 526, expansion valve 532, and compressor 528, which may be the same as or similar to coils 120, coils 130, charge storage vessel 124, expansion valve 126, expansion valve 132, and compressor 128 of FIG. 1, respectively.

Heat pump 502 may further include valve 534, which may be any suitable three-way valve, and valve 436, which may be any suitable solenoid valve. Charge storage vessel 534 may be positioned between expansion valve 526 and expansion valve 532. For example, charge storage vessel 534 may be positioned along bypass line 517 of fluid lines 516 and in the cooling cycle, charge storage vessel 534 may be bypassed.

Heat pump 502 may include reversing valve 530 which may be any suitable reversing valve (e.g., a four-way valve) reversing the direction of flow of heat pump 502 between a cooling cycle and a heating cycle. The components of heat pump 502 may be connected by fluid lines 516, which may be the same as or similar to fluid lines 116 of FIG. 1.

Referring now to FIG. 5A, a cooling cycle of heat pump 502 is illustrated in which coils 520 serve as evaporator coils and coils 530 serve as condenser coils. In the cooling cycle expansion valve 532 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 526).

In the cooling cycle, the charge storage vessel may be bypassed by actuating valves 537 and/or 534. Alternatively, it may be desirable to add more charge to heat pump 502 during cooling and thus valve 537 may be opened but valve 534 may be closed. In this manner, additional charge may be added for off design conditions. For example, the added charge may be reintroduced into the system using bleeder tube 527. Bleed tube 527 may be a capillary tube with a relatively small diameter (as compared to other tubing in heat pump 502, flow slowly releasing fluid (e.g., when valve 534 is open) in a manner that lowers pressure on the inlet side of bleed tube 527. In one example, the bleeder tube 527 (e.g., a bleeder cap tube) may be positioned between the valve 534 and coils 520.

When transitioning from the heating cycle to the cooling cycle, valve 534 may be left open such to permit bleeder tube 527 to drain excess fluid in charge storage vessel 524 from the heating cycle. Once charge storage vessel 524 is discharged, valve 534 may actuate to isolate charge storage vessel 524 during the cooling cycle, as desired. Charge storage vessel may be permitted to discharge for a set period of time (e.g., 1, 2 or 3 minutes). Alternatively, pressure may be monitored in heat pump 502, and the discharge time may be determined based on sensed pressure in heat pump 502.

Referring now to FIG. 5B, a heating cycle of heat pump 502 is illustrated in which coils 520 serve as condenser coils and coils 530 serve as evaporator coils. For example, reversing valve 531 may be actuated to transition from a cooling cycle to a heating cycle. In the heating cycle, expansion valve 526 may be bypassed (e.g., using a check valve and a bypass fluid line (not shown)) such that the fluid only traverses one expansion valve (e.g., expansion valve 532). In the heating cycle valve 534 may be closed and valve 537 may be opened to allow charge storage vessel 534 to storage extra charge as needed to avoid buildup of pressure in heat pump 502.

Although embodiments have been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as illustrative forms of implementing the embodiments. Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments could include, while other embodiments do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements, and/or steps are included or are to be performed in any particular embodiment.

Claims

1. A heat pump system for charge management, the system comprising: a first plurality of coils configured to receive a fluid and exchange thermal energy with the fluid;a blower in fluid communication with an exterior of the first plurality of coils;a second plurality of coils configured to receive the fluid and exchange thermal energy with the fluid, the second plurality of coils having a first volume capacity larger than a second volume capacity of the first plurality of coils;a compressor in fluid communication with the first plurality of coils and the second plurality of coils;a charge storage vessel in fluid communication with the first plurality of coils and the second plurality of coils, the charge storage vessel configured to store a volume of the fluid, the charge storage vessel in fluid communication with a first expansion valve;a first valve connected to the charge storage vessel at a first end of the charge storage vessel and a second valve connected to the charge storage vessel at a second end of the charge storage vessel, one or more of the first valve and the second valve configured to selectively transition to a closed position;wherein the charge storage vessel is configured to exchange thermal energy with a fluid line extending between the second plurality of coils and the compressor, andwherein the heat pump system is a ducted heat pump system or a packaged heat pump system.

2. The heat pump system of claim 1, wherein the first valve is in fluid communication with the first plurality of coils and the second valve is in fluid communication with the second plurality of coils.

3. The heat pump system of claim 1, wherein the first valve is a three-way valve and the second valve is a check valve and the first valve and the second valve are configured to cause the fluid to bypass the charge storage vessel in a cooling cycle.

4. The heat pump system of claim 2, wherein the first valve is a three-way valve and the second valve is a check valve and the first valve and the second valve are configured to cause the fluid to pass through the charge storage vessel in a heating cycle.

5. The heat pump system of claim 4, wherein the exchange of thermal energy between the fluid line and the charge storage vessel facilitates evacuation of fluid from the charge storage vessel when the heat pump system transitions from the heating cycle to the cooling cycle.

6. The heat pump system of claim 1, wherein the first valve is a first three-way valve and the second valve is a second three-way valve and the first valve and the second valve are configured to cause the fluid to by-pass the charge storage vessel in a cooling cycle.

7. The heat pump system of claim 1, wherein the first plurality of coils, the second plurality of coils, and the blower are positioned in a first housing and the second plurality of coils and the compressor are positioned in a second housing different than the first housing.

8. The heat pump system of claim 7, wherein the first housing is configured to be positioned within a structure comprising the at least one air duct and the second housing is configured to be positioned outside the structure.

9. The heat pump system of claim 1, wherein the blower is in fluid communication with at least one air duct.

10. The heat pump system of claim 1, wherein the second plurality of coils and the first plurality of coils the have a volume capacity ratio of greater than 2:1.

11. A heat pump system for charge management, the system comprising: a first plurality of coils configured to receive a fluid and exchange thermal energy with the fluid;a blower in fluid communication with an exterior of the first plurality of coils;a second plurality of coils configured to receive the fluid and exchange thermal energy with the fluid, the second plurality of coils having a first volume capacity larger than a second volume capacity of the first plurality of coils;a compressor in fluid communication with the first plurality of coils and the second plurality of coils;a charge storage vessel in fluid communication with the first plurality of coils and the second plurality of coils, the charge storage vessel configured to store a volume of the fluid, the charge storage vessel in fluid communication with an expansion valve;a first valve in fluid communication with a first end of the charge storage vessel;a second valve in fluid communication with a second end of the charge storage vessel; anda bleeder cap tube between the first valve and the first plurality of coils, and wherein the heat pump system is a ducted heat pump system or a packaged heat pump system.

12. The heat pump system of claim 11, wherein the first valve is a first solenoid valve and the second valve is a second solenoid valve.

13. The heat pump system of claim 12, wherein fluid is permitted to evacuate the charge storage vessel via the bleeder cap tube.

14. The heat pump system of claim 11, wherein the blower is in fluid communication with at least one air duct.

15. The heat pump system of claim 11, further comprising the first expansion valve positioned between the charge storage vessel and the plurality of second coils.

16. The heat pump system of claim 15, further comprising a second expansion valve positioned between the second plurality of coils and the charge storage vessel.

17. The heat pump system of claim 11, wherein the second plurality of coils and the first plurality of coils the have a volume capacity ratio of greater than 2:1.

18. The heat pump system of claim 11, wherein the wherein the first plurality of coils, the charge storage vessel, and the blower are positioned in a first housing.

19. The heat pump system of claim 18, wherein the second plurality of coils and the compressor are positioned in the first housing.

20. The heat pump system of claim 18, wherein the second plurality of coils and the compressor are positioned in a second housing different than the first housing.