Water-refrigerant interconnection system for supplying hot, cold and domestic hot water

Abstract

This application relates to the field of air conditioning technology, disclosing a water-refrigerant interconnected air conditioner that supplies cooling, heating, and domestic hot water, comprising: one or more air conditioning units, a first circulation loop, a second circulation loop, a third circulation loop, a heat exchange device, and a hot water unit. The air conditioning unit includes a first auxiliary heat exchanger, an outdoor heat exchanger, and at least one indoor heat exchanger. A first throttling device is provided on one side of the first medium channel of the first auxiliary heat exchanger, and a second throttling device is provided on one side of the first medium channel of the indoor heat exchanger; a first valve is provided on one side of the second medium channel of the outdoor heat exchanger, and a second valve is provided on one side of the second medium channel of the first auxiliary heat exchanger, thereby enabling multiple functional modes by controlling the states of the first water pump, the first throttling device, the second throttling device, the first valve, and the second valve. This system ensures users' cooling and heating needs while providing efficient hot water supply throughout the year.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example to a water-fluorine interconnected machine that supplies hot and cold water and domestic hot water. Background Technology

[0002] The related technology discloses a combined cooling, heating, and power (CCHP) system, which includes refrigerant pipelines, underfloor heating pipelines, domestic water pipelines, a refrigerant-water heat exchanger, and a water heat exchanger. The underfloor heating pipelines are closed pipelines. The refrigerant pipelines exchange heat with the underfloor heating pipelines through the refrigerant-water heat exchanger, and the domestic water pipelines exchange heat with the underfloor heating pipelines through the water heat exchanger. The domestic water pipelines are used to provide domestic water to users.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] When producing domestic hot water, the heat generated by the heat pump unit needs to undergo secondary heat exchange through a refrigerant-water heat exchanger and a water-water heat exchanger, resulting in energy loss and reduced hot water production efficiency. Furthermore, to meet the combined heating, cooling, and domestic hot water supply needs of the building, the system uses too many heat exchangers and related valve components, making control complex. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a water-fluoride interconnected unit that supplies both hot and cold water as well as domestic hot water, solving the problem of achieving efficient hot water supply while meeting users' heating and cooling needs.

[0007] In some embodiments, the water-refrigerant interconnect unit supplying hot and cold water and domestic hot water includes:

[0008] One or more air conditioning units, the air conditioning unit including a first auxiliary heat exchanger, an outdoor heat exchanger and at least one indoor heat exchanger, wherein the first auxiliary heat exchanger is a dual-medium heat exchanger and the outdoor heat exchanger and the indoor heat exchanger are both three-medium heat exchangers.

[0009] The first circulation loop is provided in each of the air conditioning units, and the multiple first circulation loops are independent of each other; the first medium channel of the outdoor heat exchanger and the first medium channel of the indoor heat exchanger are connected in series and connected to the first circulation loop, and the first medium channel of the first auxiliary heat exchanger and the first medium channel of the indoor heat exchanger are connected in parallel and connected to the first circulation loop; and a first throttling device is provided on one side of the first medium channel of the first auxiliary heat exchanger, and a second throttling device is provided on one side of the first medium channel of the indoor heat exchanger.

[0010] The second circulation loop is provided in each of the air conditioning units, and the multiple second circulation loops are connected to each other; the second medium channel of the first auxiliary heat exchanger and the second medium channel of the outdoor heat exchanger are connected in parallel and connected to the second circulation loop;

[0011] The hot water unit includes a first water pump and a collection device; the first water pump supplies low-temperature water to the second circulation loop, the collection device recovers high-temperature water after heat exchange in the second circulation loop, and the high-temperature water can be supplied to the outside.

[0012] The outdoor heat exchanger has a first valve on one side of the second medium channel and a second valve on one side of the second medium channel of the first auxiliary heat exchanger, thereby enabling multiple functional modes by controlling the states of the first water pump, the first throttling device, the second throttling device, the first valve, and the second valve.

[0013] Optionally, the collection device includes:

[0014] The hot water collection tank is connected to the outlet side of the second medium channel of the outdoor heat exchanger and the outlet side of the second medium channel of the first auxiliary heat exchanger; and the hot water collection tank supplies hot water to the outside through a supply pipeline.

[0015] Optionally, the hot water collection tank is connected to the inlet of the first water pump via a reheat pipeline, so that the water in the hot water collection tank can enter the second circulation loop through the first water pump.

[0016] Optionally, the water-refrigerant interconnection unit for supplying hot and cold water and domestic hot water further includes:

[0017] The third circulation loop is connected to the second medium channel of the indoor heat exchanger, and the second medium channels of multiple indoor heat exchangers are connected in parallel; and a second water pump is provided on the third circulation loop.

[0018] A heat exchange device is connected to the third circulation loop and is in series with the second medium channel of the indoor heat exchanger. An eighth valve is provided on one side of the heat exchange device.

[0019] Optionally, the heat exchange device includes a ceiling-mounted radiant heat exchanger, a wall-mounted radiant heat exchanger, a floor-mounted radiant heat exchanger, or a liquid heat storage tank.

[0020] Optionally, the water-refrigerant interconnection unit for supplying hot and cold water and domestic hot water further includes:

[0021] The second auxiliary heat exchanger is configured as a dual-medium heat exchanger, wherein its first medium channel is connected to the first circulation loop and is in series with the first medium channel of the first auxiliary heat exchanger; and its second medium channel is connected to the second circulation loop and is in series with the second medium channel of the first auxiliary heat exchanger.

[0022] A third valve is provided on one side of the first medium passage of the second auxiliary heat exchanger;

[0023] The first medium channel of the second auxiliary heat exchanger is connected to a bypass branch at both ends, and a fourth valve is provided on the bypass branch.

[0024] Optionally, the water-refrigerant interconnected unit for supplying hot and cold water and domestic hot water has a cooling and hot water supply mode. The cooling and hot water supply mode corresponds to the operation of the refrigeration cycle in the first circulation loop, in which the first water pump is turned on, the first valve and the fourth valve are turned on, the second valve and the third valve are turned off, the first throttling device is turned off, and the second throttling device is turned on.

[0025] Optionally, the water-refrigerant interconnected unit for supplying hot and cold water and domestic hot water has a heating and hot water supply mode, which corresponds to the heating cycle of the first circulation loop, in which the first water pump is turned on, the second valve and the third valve are turned on, the first valve and the fourth valve are turned off, the first throttling device is turned on, and the second throttling device is turned on.

[0026] Optionally, when the water-fluorine interconnected unit supplying hot and cold water and domestic hot water is operating in heating and hot water supply mode, it further includes: turning on the second water pump and opening the eighth valve corresponding to the heat exchange device requiring heat supply.

[0027] Optionally, the water-refrigerant interconnected unit supplying hot and cold water and domestic hot water has a separate hot water supply mode. The separate hot water supply mode corresponds to the heating cycle of the first circulation loop, in which the first water pump is turned on, the second valve and the third valve are turned on, the first valve and the fourth valve are turned off, the first throttling device is turned on, and multiple second throttling devices are turned off.

[0028] The water-refrigerant interconnection unit for supplying hot and cold water and domestic hot water provided in this embodiment can achieve the following technical effects:

[0029] This system ensures users' heating and cooling needs while providing efficient hot water supply year-round. Furthermore, this water-refrigerant interconnected system for supplying both hot and cold water and domestic hot water involves a small number of devices and valves, resulting in a simple and highly reliable overall system with easy-to-control various functional modes.

[0030] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0031] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0032] Figure 1 This is a schematic diagram of the structure of the water-fluoride interconnected machine for supplying hot and cold water and domestic hot water provided in the embodiments of this disclosure;

[0033] Figure 2 This is a schematic diagram of the structure of a water-fluoride interconnected machine with multiple indoor heat exchangers for supplying hot and cold water and domestic hot water, provided in an embodiment of this disclosure;

[0034] Figure 3 This is a schematic diagram of the structure of a water-fluoride interconnected air conditioning unit with multiple air conditioning units that supplies cooling, heating, and domestic hot water, provided in an embodiment of this disclosure;

[0035] Figure 4 This is a schematic diagram of the cooling and hot water supply mode of the water-fluoride interconnected machine for supplying cooling, heating, and domestic hot water provided in the embodiments of this disclosure;

[0036] Figure 5 This is a schematic diagram of the heating and hot water supply mode of the water-fluorine interconnected machine that supplies hot and cold water and domestic hot water according to the embodiments of this disclosure;

[0037] Figure 6 This is a schematic diagram of a separate hot water supply mode for a water-fluoride interconnected machine that supplies hot and cold water and domestic hot water, provided in an embodiment of this disclosure.

[0038] Figure label:

[0039] 1: Compressor; 2: Four-way reversing valve; 3: Indoor heat exchanger; 3.1: Second throttling device; 3.2: Seventh valve; 4: Heat exchange device; 4.1: Eighth valve; 5.1: First water pump; 5.2: Second water pump; 6: Outdoor heat exchanger; 6.1: First valve; 7: Water supply device; 7.1: Fifth valve; 7.2: Sixth valve; 8: First auxiliary heat exchanger; 8.1: First throttling device; 8.2: Second valve; 9: Second auxiliary heat exchanger; 9.1: Fourth valve; 9.2: Third valve; 10: Collection device; 100: Air conditioning unit; 101: First medium passage; 102: Second medium passage; 103: Radiant heat passage; 104: First air passage; 105: Second air passage; 200: Hot water unit; 300: First circulation loop; 301: Bypass branch; 400: Second circulation loop; 500: Third circulation loop. Detailed Implementation

[0040] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0042] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0043] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0044] Unless otherwise stated, the term "multiple" means two or more.

[0045] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0046] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0048] Combination Figure 1-6 As shown, this disclosure provides a water-refrigerant interconnected air conditioner that supplies hot and cold water and domestic hot water, including one or more air conditioning units 100, a hot water unit 200, a first circulation loop 300, a second circulation loop 400, and a heat exchange device 4. The air conditioning unit 100 includes a first auxiliary heat exchanger 8, an outdoor heat exchanger 6, and at least one indoor heat exchanger 3, wherein the first auxiliary heat exchanger 8 is a dual-medium heat exchanger, and the outdoor heat exchanger 6 and the indoor heat exchanger 3 are all three-medium heat exchangers; each air conditioning unit 100 has one first circulation loop 300, and the multiple first circulation loops 300 are independent of each other, such as... Figure 3 As shown; the first medium channel 101 of the outdoor heat exchanger 6 and the first medium channel 101 of the indoor heat exchanger 3 are connected in series and connected to the first circulation loop 300, and the first medium channel 101 of the first auxiliary heat exchanger 8 and the first medium channel 101 of the indoor heat exchanger 3 are connected in parallel and connected to the first circulation loop 300; furthermore, a first throttling device 8.1 is provided on one side of the first medium channel 101 of the first auxiliary heat exchanger 8, and a second throttling device 3.1 is provided on one side of the first medium channel 101 of the indoor heat exchanger 3; each air conditioning unit 100 has a second circulation loop 400, and multiple second circulation loops 400 are connected to each other, such as... Figure 3As shown; the second medium channel 102 of the first auxiliary heat exchanger 8 and the second medium channel 102 of the outdoor heat exchanger 6 are connected in parallel and connected to the second circulation loop 400; the hot water unit 200 includes a first water pump 5.1 and a collection device 10; the first water pump 5.1 supplies low-temperature water to the second circulation loop 400, and the collection device 10 recovers the high-temperature water after heat exchange in the second circulation loop 400, and can supply the high-temperature water to the outside; wherein, a first valve 6.1 is provided on one side of the second medium channel 102 of the outdoor heat exchanger 6, and a second valve 8.2 is provided on one side of the second medium channel 102 of the first auxiliary heat exchanger 8, so that multiple functional modes can be realized by controlling the state of the first water pump 5.1, the first throttling device 8.1, the second throttling device 3.1, the first valve 6.1 and the second valve 8.2.

[0049] The water-refrigerant interconnection system provided in this embodiment, which supplies both hot and cold water and domestic hot water, ensures users' heating and cold needs while providing efficient hot water supply throughout the year through a single system. Furthermore, this water-refrigerant interconnection system involves a small number of devices and valves, resulting in a simple and highly reliable overall system, and easy control of various functional modes.

[0050] Optionally, the circulating medium in the first circulation loop 300 includes refrigerant. In the water-refrigerant interconnected air conditioner provided in the embodiments of this disclosure, the first circulation loop 300 is further provided with a compressor 1 and a four-way reversing valve 2. The compressor 1 is used to drive the flow of refrigerant in the first circulation loop 300, and the four-way reversing valve 2 is used to switch the flow direction of refrigerant in the first circulation loop 300, thereby realizing the first circulation loop 300 to operate in a heating cycle or a cooling cycle. The first throttling device 8.1 and the second throttling device 3.1 are both expansion valves, which are used to throttle and reduce the pressure of the flowing refrigerant. Wherein, when the first circulation loop 300 operates in a heating cycle, the flow direction of its refrigerant is compressor 1, four-way reversing valve 2, indoor heat exchanger 3 and first auxiliary heat exchanger 8, outdoor heat exchanger 6 and compressor 1. When the first circulation loop 300 operates in a cooling cycle, the flow direction of its refrigerant is compressor 1, four-way reversing valve 2, outdoor heat exchanger 6, indoor heat exchanger 3 and first auxiliary heat exchanger 8, and compressor 1.

[0051] Optionally, the collection device 10 includes a hot water collection tank. The outlet side of the second medium channel 102 of the outdoor heat exchanger 6 and the outlet side of the second medium channel 102 of the first auxiliary heat exchanger 8 are connected to the hot water collection tank; and the hot water collection tank supplies hot water to the outside through a supply pipeline.

[0052] In this embodiment, the first valve 6.1 is located on the outflow side of the second medium channel 102 of the outdoor heat exchanger 6, and the second valve 8.2 is located on the outflow side of the second medium channel 102 of the first auxiliary heat exchanger 8. The water supply device 7, such as municipal water supply, is connected to the inlet of the first water pump 5.1 via an inlet pipe, and a fifth valve 7.1 is provided on the inlet pipe. When the fifth valve 7.1 is opened, the first water pump 5.1 can supply low-temperature water to the second circulation loop 400. The low-temperature water exchanges heat with the first medium channel 101 of the outdoor heat exchanger 6 in the second medium channel 102 to become hot water. Alternatively, the low-temperature water exchanges heat with the first medium channel 101 of the first auxiliary heat exchanger 8 in the second medium channel 102 to become hot water. Then the hot water flows into the hot water collection tank and is finally supplied to the outside through the supply pipe for domestic hot water.

[0053] Optionally, the hot water collection tank is connected to the inlet of the first water pump 5.1 via a reheat pipeline, so that the water in the hot water collection tank can enter the second circulation loop 400 through the first water pump 5.1.

[0054] In this embodiment, the outlet of the reheat pipeline is connected to the inlet pipeline, and a sixth valve 7.2 is provided on the reheat pipeline. After the sixth valve 7.2 is opened, the hot water in the hot water collection tank flows into the inlet pipeline, and then enters the second circulation loop 400 for reheating through the first water pump 5.1. Furthermore, when the fifth valve 7.1 and the sixth valve 7.2 are opened simultaneously, the low-temperature water source of the water supply device 7 mixes with the hot water in the hot water collection tank in the inlet pipeline.

[0055] For example, when the hot water temperature in the hot water collection tank is lower than the water supply demand, the sixth valve 7.2 opens and the fifth valve 7.1 closes. Only the water in the hot water collection tank is supplied to the second circulation loop 400 by the circulating water pump and heated through multiple cycles. Hot water is then supplied to the outside through the water supply pipeline only after the hot water temperature in the hot water collection tank meets the water supply demand.

[0056] As another example, when the hot water storage capacity of the hot water collection tank exceeds the water supply demand, the fifth valve 7.1 and the sixth valve 7.2 open simultaneously to mix the hot water with the low-temperature water source. The mixed water is then supplied to the second circulation loop 400 for heating via the first water pump 5.1. This shortens the heating time of the low-temperature water source in the second circulation loop 400 and improves the energy efficiency of the hot water supply from the water-refrigerant interconnected system.

[0057] Optionally, the water-fluorine interconnect unit also includes a second auxiliary heat exchanger 9. The second auxiliary heat exchanger 9 is configured as a dual-medium heat exchanger, wherein its first medium channel 101 is connected to the first circulation loop 300 and is in series with the first medium channel 101 of the first auxiliary heat exchanger 8; its second medium channel 102 is connected to the second circulation loop 400 and is in series with the second medium channel 102 of the first auxiliary heat exchanger 8.

[0058] In this embodiment, when the first circulation loop 300 operates in heating cycle, high-temperature refrigerant flows through the first medium channel 101 of the second auxiliary heat exchanger 9 and the first medium channel 101 of the first auxiliary heat exchanger 8. The low-temperature water source in the second circulation loop 400 exchanges heat with the first medium channel 101 of the first auxiliary heat exchanger 8 for the first time when flowing through the second medium channel 102 of the first auxiliary heat exchanger 8, and then exchanges heat again with the first medium channel 101 of the second auxiliary heat exchanger 9 when flowing through the second medium channel 102 of the second auxiliary heat exchanger 9. In this embodiment, the second auxiliary heat exchanger 9 is located near the outlet of the compressor 1. If only the sensible heat of the compressor 1's exhaust is used to heat the water in the second circulation loop 400, it is difficult to heat it to approximately 50°C. Similarly, if only the condensation heat at the first auxiliary heat exchanger 8 is used, it is also difficult to heat the water in the second circulation loop 400 to approximately 50°C. Therefore, this embodiment uses two heating cycles to heat the low-temperature water source to approximately 50°C.

[0059] Optionally, the second valve 8.2 is located on the outflow side of the second medium channel 102 of the second auxiliary heat exchanger 9. When the second valve 8.2 is open, the water heated in the second medium channel 102 of the first auxiliary heat exchanger 8 and the second medium channel 102 of the second auxiliary heat exchanger 9 flows to the hot water collection tank.

[0060] Optionally, a third valve 9.2 is provided on one side of the first medium channel 101 of the second auxiliary heat exchanger 9; a bypass branch 301 is connected to both ends of the first medium channel 101 of the second auxiliary heat exchanger 9, and a fourth valve 9.1 is provided on the bypass branch 301.

[0061] In this embodiment, the third valve 9.2 can be located on either the inflow side or the outflow side of the first medium channel 101 of the second auxiliary heat exchanger 9. Furthermore, when the third valve 9.2 is closed and the fourth valve 9.1 is open, the bypass branch 301 bypasses the first medium channel 101 of the second auxiliary heat exchanger 9, and at this time, the bypass branch 301 is connected in series with the first medium channel 101 of the first auxiliary heat exchanger 8.

[0062] Optionally, such as Figure 1 As shown, the third medium channel of the outdoor heat exchanger 6 is the first air channel 104, through which air flows to exchange heat with the first medium channel 101 and / or the second medium channel 102 of the outdoor heat exchanger 6 via an outdoor fan; the third medium channel of the indoor heat exchanger 3 is the second air channel 105, through which air flows to exchange heat with the first medium channel 101 and / or the second medium channel 102 of the indoor heat exchanger 3 via an indoor fan.

[0063] In this embodiment, when the outdoor fan is started, outdoor air flows through the first air passage 104, thereby exchanging heat with the first medium passage 101 and / or the second medium passage 102 of the outdoor heat exchanger 6. When the indoor fan is started, indoor air flows through the second air passage 105, thereby exchanging heat with the first medium passage 101 and / or the second medium passage 102 of the indoor heat exchanger 3.

[0064] Optionally, such as Figure 4 As shown, the water-refrigerant interconnected unit has both cooling and hot water supply modes. The cooling and hot water supply mode corresponds to the first circulation loop 300 operating the refrigeration cycle, with the first water pump 5.1 turned on, the first valve 6.1 and the fourth valve 9.1 turned on, the second valve 8.2 and the third valve 9.2 turned off, the first throttling device 8.1 turned off, and the second throttling device 3.1 turned on.

[0065] In this embodiment, the first circulation loop 300 operates a refrigeration cycle, and the first auxiliary heat exchanger 8 does not participate in the cycle; only the indoor heat exchanger 3 participates. The circulation direction of the second circulation loop 400 is the first water pump 5.1, the second medium channel 102 of the outdoor heat exchanger 6, and the hot water collection tank. When the low-temperature water source of the second circulation loop 400 flows through the second medium channel 102 of the outdoor heat exchanger 6, it exchanges heat with the first medium channel 101 of the outdoor heat exchanger 6, and is then heated into hot water and enters the hot water collection tank. The indoor fan is turned on to ensure the cooling effect indoors. The outdoor fan is turned on or off according to the heat balance of the system. For example, if there is less heat at the first medium channel 101 of the outdoor heat exchanger 6, the outdoor fan is turned off to effectively reduce the heat exchange between the outdoor air and the first medium channel 101 and the second medium channel 102 of the outdoor heat exchanger 6, ensuring the heating efficiency of the hot water and reducing the heat loss of the hot water. If there is more heat at the first medium channel 101 of the outdoor heat exchanger 6, the outdoor fan is turned on to prepare hot water while ensuring the heat exchange effect of the outdoor heat exchanger 6.

[0066] Optionally, such as Figure 5 As shown, the water-fluorine interconnected unit has heating and hot water supply modes. The heating and hot water supply mode corresponds to the operation of the heating cycle in the first circulation loop 300, with the first water pump 5.1 turned on, the second valve 8.2 and the third valve 9.2 turned on, the first valve 6.1 and the fourth valve 9.1 turned off, the first throttling device 8.1 turned on, and the second throttling device 3.1 turned on.

[0067] In this embodiment, the first circulation loop 300 operates a heating cycle, with both the first auxiliary heat exchanger 8 and the indoor heat exchanger 3 participating in the circulation. The circulation direction of the second circulation loop 400 is: first water pump 5.1, second medium channel 102 of indoor heat exchanger 3, second medium channel 102 of second auxiliary heat exchanger 9, and hot water collection tank. When the low-temperature water source in the second circulation loop 400 flows through the second medium channel 102 of the first auxiliary heat exchanger 8, it exchanges heat with the first medium channel 101 of the first auxiliary heat exchanger 8 for the first time. Then, when the low-temperature water source flows out from the second medium channel 102 of the first auxiliary heat exchanger 8 and enters the second medium channel 102 of the second auxiliary heat exchanger 9, it exchanges heat with the first medium channel 101 of the second auxiliary heat exchanger 9 again. After being heated twice, the low-temperature water source meets the temperature for domestic water use and then enters the hot water collection tank. The outdoor fan is turned on, and the indoor fan is turned on. The outdoor fan ensures the heat exchange of the outdoor heat exchanger 6, and the indoor fan generates hot air to blow into the room to ensure the heating effect.

[0068] Optionally, such as Figure 1 and Figure 2 As shown, the water-refrigerant interconnected unit also includes a third circulation loop 500 and a heat exchange device 4. The second medium channel 102 of the indoor heat exchanger 3 is connected to the third circulation loop 500, and the second medium channels 102 of multiple indoor heat exchangers 3 are connected in parallel; and a second water pump 5.2 is provided on the third circulation loop 500; the heat exchange device 4 is connected to the third circulation loop 500 and is connected in series with the second medium channel 102 of the indoor heat exchanger 3; when the water-refrigerant interconnected unit is operating in heating and hot water supply mode, the second water pump 5.2 is turned on.

[0069] In this embodiment, the circulating medium in the third circulation loop 500 includes water or antifreeze. After the second water pump 5.2 is turned on, the water or antifreeze circulates in the third circulation loop 500 and exchanges heat with the first medium channel 101 of the indoor heat exchanger 3 when flowing through the second medium channel 102. The water or antifreeze carries heat into the heat exchange device 4 and supplies heat to the room through the heat exchange device 4. The outdoor fan is turned on to maintain the operation of the outdoor heat exchanger 6. The indoor fan can be turned on or off according to user needs. When the indoor fan is off, it facilitates heat exchange between the first medium channel 101 and the second medium channel 102 of the indoor heat exchanger 3, and the heat supplied through the heat exchange device 4 improves user comfort. When the indoor fan is on, indoor air exchanges heat with the first medium channel 101 and the second medium channel 102 of the indoor heat exchanger 3 through the second air channel 105 to form hot air, which can quickly respond to heating needs. In this heating and hot water supply mode, hot water is supplied while heat is also supplied to the room through indoor heat exchanger 3 and heat exchange device 4.

[0070] Optionally, the heat exchange device 4 includes a ceiling-mounted radiant heat exchanger, a wall-mounted radiant heat exchanger, a floor-mounted radiant heat exchanger, or a liquid heat storage tank. The internal piping of the heat exchange device 4 is called the radiant heat channel 103, and the radiant heat channels 103 of multiple heat exchange devices 4 are connected in parallel. The heat exchange device 4 of the above type provides high comfort as a radiant heating terminal.

[0071] For example, the water-fluorine interconnected air conditioner is applied to multiple rooms, each room having an indoor heat exchanger 3 and a heat exchange device 4. The heat exchange devices 4 in each room can be the same or different. For example, room one uses a ceiling-mounted radiant heat exchanger, room two uses a wall-mounted radiant heat exchanger, and room three uses a wall-mounted radiant heat exchanger.

[0072] Optionally, a seventh valve 3.2 is provided on one side of the second medium channel 102 of the indoor heat exchanger 3, and an eighth valve 4.1 is provided on one side of the internal pipe of the heat exchange device 4. In this way, when the water-fluorine interconnected unit is applied to multiple rooms, the heat supply can be adjusted by controlling the opening degree of the seventh valve 3.2 and the eighth valve 4.1 according to the heating needs of different rooms.

[0073] Optionally, such as Figure 6 As shown, the water-fluoride interconnected unit has a separate hot water supply mode. The separate hot water supply mode corresponds to the heating cycle of the first circulation loop 300, where the first water pump 5.1 is turned on, the second valve 8.2 and the third valve 9.2 are turned on, the first valve 6.1 and the fourth valve 9.1 are turned off, the first throttling device 8.1 is turned on, and multiple second throttling devices 3.1 are turned off.

[0074] In this embodiment, the first circulation loop 300 operates in a heating cycle, and the indoor heat exchanger 3 does not participate in the cycle; only the first auxiliary heat exchanger 8 participates. The circulation direction of the second circulation loop 400 is: first water pump 5.1, second medium channel 102 of indoor heat exchanger 3, second medium channel 102 of second auxiliary heat exchanger 9, and hot water collection tank. When the low-temperature water source in the second circulation loop 400 flows through the second medium channel 102 of the first auxiliary heat exchanger 8, it exchanges heat with the first medium channel 101 of the first auxiliary heat exchanger 8 for the first time. Then, when the low-temperature water source flows out from the second medium channel 102 of the first auxiliary heat exchanger 8 and enters the second medium channel 102 of the second auxiliary heat exchanger 9, it exchanges heat with the first medium channel 101 of the second auxiliary heat exchanger 9 again. After two heat exchanges, the water reaches the domestic water temperature and then enters the hot water collection tank. The outdoor fan is turned on to maintain the operation of the outdoor heat exchanger 6, and the indoor fan is turned off to reduce energy consumption and does not supply hot air to the room to meet the need for no temperature adjustment. In this embodiment, the first auxiliary heat exchanger 8, in addition to participating in the secondary heating of the low-temperature water source, also serves as the condenser of the air conditioning unit 100 to maintain the heating cycle of the first circulation loop 300, and does not supply heat to the room. Thus, during the transitional season, it operates in a dedicated hot water supply mode, achieving hot water supply without affecting the indoor temperature.

[0075] As can be seen from the above embodiments, the water-refrigerant interconnection machine for supplying hot and cold water and domestic hot water provided in this disclosure can meet users' heating and cold needs while ensuring thermal comfort and year-round hot water supply. Furthermore, this water-refrigerant interconnection machine has a simple structure, high hot water production efficiency, and low system energy consumption.

[0076] During the summer when temperatures are high, the water-refrigerant interconnected air conditioning system operates in both cooling and hot water supply mode, providing both hot water and cool air to meet the demand for both. During the winter when temperatures are low, it operates in both heating and hot water supply mode, providing both hot water and warm air and / or radiant heat to meet the demand for both hot water and comfortable heating. In transitional seasons when there is no need for indoor temperature adjustment, the system operates in a dedicated hot water supply mode, providing hot water without affecting the indoor temperature—a feature difficult to achieve with existing tri-generation air conditioning systems.

[0077] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A water-refrigerant interconnection machine for supplying hot and cold water and domestic hot water, characterized in that, include: One or more air conditioning units (100), the air conditioning unit (100) includes a first auxiliary heat exchanger (8), an outdoor heat exchanger (6) and at least one indoor heat exchanger (3), wherein the first auxiliary heat exchanger (8) is a dual-medium heat exchanger, and the outdoor heat exchanger (6) and the indoor heat exchanger (3) are both three-medium heat exchangers; The first circulation loop (300) is provided in each of the air conditioning units (100), and the multiple first circulation loops (300) are independent of each other; the first medium channel (101) of the outdoor heat exchanger (6) and the first medium channel (101) of the indoor heat exchanger (3) are connected in series and connected to the first circulation loop (300), and the first medium channel (101) of the first auxiliary heat exchanger (8) and the first medium channel (101) of the indoor heat exchanger (3) are connected in parallel and connected to the first circulation loop (300); and a first throttling device (8.1) is provided on one side of the first medium channel (101) of the first auxiliary heat exchanger (8), and a second throttling device (3.1) is provided on one side of the first medium channel (101) of the indoor heat exchanger (3); The second circulation loop (400) is provided in each of the air conditioning units (100), and the multiple second circulation loops (400) are connected to each other; the second medium channel (102) of the first auxiliary heat exchanger (8) and the second medium channel (102) of the outdoor heat exchanger (6) are connected in parallel and connected to the second circulation loop (400); The hot water unit (200) includes a first water pump (5.1) and a collection device (10); the first water pump (5.1) supplies low-temperature water to the second circulation loop (400), the collection device (10) recovers high-temperature water after heat exchange in the second circulation loop (400), and the high-temperature water can be supplied to the outside. Among them, a first valve (6.1) is provided on one side of the second medium channel (102) of the outdoor heat exchanger (6), and a second valve (8.2) is provided on one side of the second medium channel (102) of the first auxiliary heat exchanger (8). Thus, multiple functional modes can be realized by controlling the state of the first water pump (5.1), the first throttling device (8.1), the second throttling device (3.1), the first valve (6.1) and the second valve (8.2). The second auxiliary heat exchanger (9) is configured as a dual-medium heat exchanger, wherein its first medium channel (101) is connected to the first circulation loop (300) and is in series with the first medium channel (101) of the first auxiliary heat exchanger (8); its second medium channel (102) is connected to the second circulation loop (400) and is in series with the second medium channel (102) of the first auxiliary heat exchanger (8); A third valve (9.2) is provided on one side of the first medium passage (101) of the second auxiliary heat exchanger (9); The first medium channel (101) of the second auxiliary heat exchanger (9) is connected to a bypass branch (301) at both ends, and a fourth valve (9.1) is provided on the bypass branch (301).

2. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to claim 1, characterized in that, The collecting device (10) includes: The hot water collection tank is connected to the outlet side of the second medium channel (102) of the outdoor heat exchanger (6) and the outlet side of the second medium channel (102) of the first auxiliary heat exchanger (8); and the hot water collection tank supplies hot water to the outside through the supply pipeline.

3. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to claim 2, characterized in that, The hot water collection tank is connected to the inlet of the first water pump (5.1) via a reheat pipeline, so that the water in the hot water collection tank can enter the second circulation loop (400) through the first water pump (5.1).

4. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to claim 1, characterized in that, Also includes: The third circulation loop (500) is connected to the second medium channel (102) of the indoor heat exchanger (3), and the second medium channels (102) of the multiple indoor heat exchangers (3) are connected in parallel; and a second water pump (5.2) is provided on the third circulation loop (500). The heat exchange device (4) is connected to the third circulation loop (500) and is connected in series with the second medium channel (102) of the indoor heat exchanger (3). Furthermore, an eighth valve (4.1) is provided on one side of the heat exchange device (4).

5. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to claim 4, characterized in that, The heat exchange device (4) includes a ceiling-mounted radiant heat exchanger, a wall-mounted radiant heat exchanger, a floor-mounted radiant heat exchanger, or a liquid heat storage device.

6. The water-fluoride interconnected machine for supplying hot and cold water and domestic hot water according to any one of claims 1 to 5, characterized in that, The water-fluorine interconnected machine that supplies hot and cold water and domestic hot water has a cooling and hot water supply mode. The cooling and hot water supply mode corresponds to the first circulation loop (300) running a refrigeration cycle. The first water pump (5.1) is turned on, the first valve (6.1) and the fourth valve (9.1) are turned on, the second valve (8.2) and the third valve (9.2) are turned off, the first throttling device (8.1) is turned off, and the second throttling device (3.1) is turned on.

7. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to any one of claims 1 to 5, characterized in that, The water-fluorine interconnected machine that supplies hot and cold water and domestic hot water has a heating and hot water supply mode. The heating and hot water supply mode corresponds to the operation of the heating cycle of the first circulation loop (300). The first water pump (5.1) is turned on, the second valve (8.2) and the third valve (9.2) are turned on, the first valve (6.1) and the fourth valve (9.1) are turned off, the first throttling device (8.1) is turned on, and the second throttling device (3.1) is turned on.

8. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to claim 7, characterized in that, When the water-fluorine interconnected machine for supplying hot and cold water and domestic hot water is operating in the heating and hot water supply mode, the following additional steps are also included: the second water pump (5.2) is turned on, and the eighth valve (4.1) corresponding to the heat exchange device (4) that requires heating is turned on.

9. The water-fluoride interconnection machine for supplying hot and cold water and domestic hot water according to any one of claims 1 to 5, characterized in that, The water-fluorine interconnected machine that supplies hot and cold water and domestic hot water has a separate hot water supply mode. The separate hot water supply mode corresponds to the heating cycle of the first circulation loop (300). The first water pump (5.1) is turned on, the second valve (8.2) and the third valve (9.2) are turned on, the first valve (6.1) and the fourth valve (9.1) are turned off, the first throttling device (8.1) is turned on, and multiple second throttling devices (3.1) are turned off.

Images