Multi-connected unit composed of multi-source cold and hot water module units

Abstract

This invention discloses a multi-unit chiller / heat pump system composed of multi-source chiller / heat pump modules, including a refrigerant pump module, a rectifier module, a heat exchanger module, an ejector module, a user-side module, and a hydraulic module. This application highly integrates the traditional water-cooled chiller and cooling tower into one unit, using an air-cooled heat pump module as a template to add an air-cooled heat exchanger to the water-cooled unit, creating a brand-new model that combines an air-cooled heat pump unit and a water-cooled unit—an integrated air-water multi-source chiller / heat pump module unit. This not only achieves small-scale modularization of traditional chiller units but also expands the air-cooled heat pump heating function of the water-cooled unit. Furthermore, the use of jet ejector technology greatly improves the mechanical efficiency of the heat pump, enabling the miniaturization of large units, integrated refrigeration and cooling, integrated air-cooling and water-cooling, diversified cold and heat sources, high efficiency in cooling and heating, and convenient installation and maintenance.

Description

[0001] This application is a divisional application of the invention patent application number: 202110640012.0, entitled "A Multi-Source Hot and Cold Water Module Unit". Technical Field

[0002] This invention relates to the field of heat exchangers, and in particular to a multi-unit system composed of multi-source hot and cold water modules. Background Technology

[0003] The market share of existing central air conditioning air-cooled chiller (heat pump) units and water-cooled chiller units is over 90%.

[0004] 1. Air-cooled heat pumps utilize outdoor ambient air as a cold and heat source: Advantages include cooling in summer and heating in winter, serving two purposes in one unit; small size and light weight, facilitating transportation, construction, and maintenance; roof installation does not occupy indoor space; multiple units can be connected in parallel as backups, resulting in strong system stability; Disadvantages include high condensing temperature during cooling, resulting in low cooling efficiency and energy consumption more than 30% higher than water-cooled (including evaporative cooling) types; low evaporation temperature during heating, leading to severe reduction in heating capacity at low ambient temperatures, resulting in low heating efficiency.

[0005] 2. Water-cooled (including evaporative cooling) units utilize "low-temperature" water as a cold source: Advantages include high single-unit power and strong cooling capacity, meeting the cooling needs of large-area scenarios; low condensing temperature, resulting in high cooling efficiency; Disadvantages include large size and weight, making transportation, installation, and maintenance inconvenient, requiring an indoor machine room and wasting indoor space; separation of the refrigeration unit and cooling tower leads to excessively long cooling pipe networks, increasing construction workload, difficulty, and cost; increased cooling cycle energy consumption and significant cooling water waste; few standby units, resulting in poor system stability; high energy consumption under partial load; and inability to use due to limited installation space.

[0006] Based on the technical limitations of the aforementioned units, this application proposes a new model that integrates an air-cooled chiller (heat pump) unit and a water-cooled chiller unit into one unit—an integrated heat pump module unit that integrates air and water as cold and heat sources, namely a multi-source chilled and hot water module unit. Summary of the Invention

[0007] This application aims to address the problems of existing heat pump units, such as limited functionality, high energy consumption, and restricted operating environment; as well as the problems of water-cooled chillers being large in size, having limited installation space, and lacking heating function.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows:

[0009] A multi-source hot and cold water modular unit includes a refrigerant pump push module, a rectifier module, a heat exchanger module, an ejector module, a user-side module, and a hydraulic module.

[0010] The refrigerant pump module includes a compressor, which is equipped with a steam injection port and a return port;

[0011] The steam injection port forms nodes A1 and A2 connected to the cold and heat source heat exchanger module and node B connected to the user side module through a multi-way valve group and pipeline; node C connected to the ejector module is formed between node A1 (or A2) and node B through a multi-way valve group and pipeline.

[0012] The return air port is connected to node D of the ejector module via a pipeline;

[0013] Optionally, the multi-way valve group consists of a first four-way valve and a second four-way valve. The steam injection port, node A1, and node C are respectively connected to the three valve ports of the first four-way valve through pipelines. Node A2, node B, and node C are respectively connected to the three valve ports of the second four-way valve through pipelines. The remaining valve ports of the first four-way valve and the second four-way valve are connected to each other through a first connecting pipe.

[0014] Optionally, the multi-way valve group comprises a first three-way valve, a second three-way valve, and a third three-way valve. The steam injection port and the parallel nodes A1 and A2 are respectively connected to the two valve ports of the first three-way valve via pipelines. The node B and the parallel nodes A1 and A2 are respectively connected to the two valve ports of the third three-way valve via pipelines. The remaining valve ports of the first three-way valve and the third three-way valve are connected via a second connecting pipe. The nodes B, C, and the parallel nodes A1 and A2 are respectively connected to the three valve ports of the second three-way valve via pipelines.

[0015] Optionally, the multi-way valve group comprises a first two-way valve, a second two-way valve, a third two-way valve, a fourth two-way valve, a ninth two-way valve, and a tenth two-way valve. The steam injection port is connected to the first two-way valve and the second two-way valve via a pipeline. Nodes A1 and A2 are connected in parallel and then connected to the first two-way valve, the third two-way valve, and the tenth two-way valve, respectively. The first two-way valve, the second two-way valve, and the ninth two-way valve are connected in series to node B. The third two-way valve and the fourth two-way valve are connected in series to node B. The tenth two-way valve is connected to the second two-way valve and the ninth two-way valve via a pipeline. Node C is connected to the third two-way valve and the fourth two-way valve via a pipeline.

[0016] The rectifier module includes node F, which is connected to the heat exchanger module of the cold and heat source through a multi-way valve group and pipelines; node G, which is connected to the user side module; node H, which is connected to the ejector module; and node I.

[0017] Optionally, the multi-way valve group is a third four-way valve, and nodes F, G, H and I are respectively connected to its four valve ports through pipelines;

[0018] Optionally, the multi-way valve group consists of a fourth three-way valve and a fifth three-way valve arranged in parallel. Nodes F, H, and I are respectively connected to the three valve ports of the fourth three-way valve through pipelines, and nodes G, H, and I are respectively connected to the three valve ports of the fifth three-way valve through pipelines.

[0019] Optionally, the multi-way valve group consists of a fifth two-way valve and a sixth two-way valve connected in series, and a seventh two-way valve and an eighth two-way valve connected in parallel and connected in series. Node F is connected between the fifth two-way valve and the sixth two-way valve, node G is connected between the seventh two-way valve and the eighth two-way valve, node H is connected between the sixth two-way valve and the eighth two-way valve, and node I is connected between the fifth two-way valve and the seventh two-way valve.

[0020] Optionally, the multi-way valve group consists of a first check valve, a second check valve connected in series, and a third check valve and a fourth check valve connected in parallel and in series with them.

[0021] The heat exchanger module includes a water source heat exchanger and an air source heat exchanger, as well as nodes A1' and A2' connected to the refrigerant pump push module and node F' connected to the rectifier module, respectively, through a multi-way valve group and pipelines.

[0022] Optionally, the multi-way valve group is a sixth three-way valve. The water source heat exchanger, the air source heat exchanger, and node F' are respectively connected to the three valve ports of the sixth three-way valve through pipelines. The water source heat exchanger is connected to the refrigerant pump push module through node A1', and the air source heat exchanger is connected to the refrigerant pump push module through node A2'.

[0023] Optionally, the multi-way valve group consists of an eleventh two-way valve and a twelfth two-way valve. The eleventh two-way valve is connected between the air source heat exchanger and node F', and the twelfth two-way valve is connected between the water source heat exchanger and node F'. The water source heat exchanger is connected to the refrigerant pump push module through node A1', and the air source heat exchanger is connected to the refrigerant pump push module through node A2'.

[0024] The ejector module includes an ejector, a gas-liquid separator, and nodes H' and I' connected to the rectifier module respectively via a multi-way valve group and pipelines;

[0025] The ejector is provided with an air inlet, an air intake, and an ejection port;

[0026] The gas-liquid separator is provided with a first refrigerant inlet, a first refrigerant outlet, a second refrigerant inlet, and a second refrigerant outlet;

[0027] The air intake has a node C' connected to the refrigerant pump push module, the first refrigerant outlet has a node D' connected to the refrigerant pump push module, and the injection port is connected to the first refrigerant inlet;

[0028] Optionally, the multi-way valve group is a seventh three-way valve, and the air inlet, node I', and refrigerant second inlet are respectively connected to the three valve ports of the seventh three-way valve through pipelines, and the refrigerant second outlet is connected to node H' through a cold and heat expansion valve;

[0029] Optionally, the multi-way valve group consists of a thirteenth two-way valve and a fourteenth two-way valve. The thirteenth two-way valve is connected between the air inlet and node I', and the fourteenth two-way valve is connected between the second refrigerant inlet and node I'. The second refrigerant outlet is connected to node H' via a heating and cooling expansion valve.

[0030] Use side modules, including indoor side heat exchangers;

[0031] The indoor heat exchanger has a chilled water inlet and a chilled water outlet;

[0032] The indoor heat exchanger also has a node B' connected to the refrigerant pump push module and a node G' connected to the rectifier module.

[0033] Hydraulic module, including cooling water inlet and cooling water outlet;

[0034] The water source heat exchanger is connected in series between the cooling water inlet and the cooling water outlet;

[0035] A multi-source cooling system is connected in parallel to the cooling water inlet and cooling water outlet;

[0036] The multi-source cooling system includes a closed cooling system or an open cooling system;

[0037] The cooling water inlet pipeline is equipped with a filter, a cooling water pump, a check valve, and a water source heat exchanger control valve;

[0038] The cooling water inlet pipe is also connected to a pressure stabilizing tank, a water supply electric valve, and a water supply pump, forming a constant pressure water supply system.

[0039] Preferably, the multi-source cooling system further includes:

[0040] Waste (heat) water source heat exchanger and waste (heat) water source control valve, solar collector heat exchanger and solar control valve, ground (water) source heat exchanger and ground (water) source control valve are installed in parallel at the cooling water inlet and cooling water outlet.

[0041] The nodes A1 and A1', A2 and A2', B and B', C and C', D and D', F and F', G and G', H and H', and I and I' are connected accordingly.

[0042] For ease of description, the above-mentioned nodes do not imply that each embodiment of this application must have connection nodes that are exactly the same in position, quantity, etc.

[0043] The aforementioned multi-way valve assembly does not refer to a specific model of valve body or valve body group, but also includes various valve bodies and combinations thereof composed of different numbers / models of valve bodies to achieve specific pipeline structures and functions. For example, in a refrigerant pump push module, a multi-way valve assembly can be a pipeline full-coverage design formed by matrix combination of two-way valves, three-way valves, and four-way valves.

[0044] The present invention also aims to provide a multi-unit system composed of multi-source hot and cold water module units, which includes any of the above-mentioned refrigerant pump push module, rectifier module, cold and heat source heat exchanger module, ejector module, user side module and hydraulic module.

[0045] The user-side module includes multiple sets of indoor heat exchangers arranged in parallel.

[0046] The beneficial effects of this invention are as follows:

[0047] This application miniaturizes the traditional water-cooled chiller unit and matches it with a low-power screw compressor or scroll compressor. Using an air-cooled chilled (heat pump) modular unit as a template, an air source heat exchanger is added in parallel with the cold source side (outdoor side) heat exchanger in the water-cooled unit to form an integrated air-water modular unit. At the same time, the outdoor heat exchanger can be connected to a ground source, sewage source (waste heat source), or solar heat exchanger in parallel with the cooling tower, which can realize the complementary advantages of multiple cold and heat sources of the heat pump unit.

[0048] This unit changes the traditional air-cooled chiller (heat pump) unit cooling method, changing the air-cooled type to water-cooled cooling type: 1. It reduces the condensing temperature and improves the cooling efficiency; 2. The water source heat exchanger can be connected to a variety of heat sources to realize the utilization of solar energy, geothermal energy and industrial waste heat, thereby improving the heating efficiency of the air-cooled heat pump.

[0049] This unit adds an air source heat exchanger and adopts a heat pump pipeline design to the traditional water-cooled chiller unit: 1. It uses air as a heat source, adding air-cooled heat pump heating function, making up for the functional deficiency of traditional water-cooled chillers that cannot heat; 2. The water source heat exchanger can be connected to a variety of cold and heat sources to realize the utilization of solar energy, geothermal energy, and industrial waste heat, thereby improving the cooling and heating efficiency of the water-cooled unit; 3. It avoids a series of problems such as instability in transportation, installation, and maintenance, space occupation, and system stability of traditional water-cooled units.

[0050] This invention enables the miniaturization of large-scale units, integration of refrigeration and cooling, integration of air and water cooling, diversification of cold and heat sources, high efficiency in refrigeration and heating, and convenient installation and maintenance.

[0051] This unit highly integrates the traditional water-cooled chiller and cooling tower into one unit. Using the air-cooled heat pump modular unit as a template, it adds an air-cooled finned heat exchanger to the water-cooled unit and matches it with a small-power screw compressor or scroll compressor, creating a brand-new model that combines the functions of an air-cooled heat pump unit and a water-cooled unit—an integrated air-water multi-source chilled and hot water modular unit. It not only realizes the small-scale modularization of traditional water chillers but also expands the air-cooled heat pump heating function of water-cooled units. The unit integrates cooling and refrigeration systems. Without starting the heat pump unit, it can directly utilize natural cold and heat sources, solar energy, industrial waste heat, etc., using the same refrigerant. Moreover, the refrigeration system and the cooling system share a set of water supply devices, which is conducive to achieving overall pressure balance when natural cold and heat sources are supplied, and the system operates more stably.

[0052] This unit utilizes ejector technology to significantly improve the mechanical efficiency of the heat pump, making the equipment itself more energy-efficient. The added water source heat exchanger not only enables the air-cooled heat pump to achieve the cooling function of a water-cooled unit, improving its cooling efficiency, but also enables the utilization of solar energy, geothermal energy, and industrial waste heat, greatly enhancing the heating efficiency of the air-cooled heat pump. These design features result in a higher cost-performance ratio, increased economic efficiency, and easier widespread adoption.

[0053] This unit breaks through the technical limitations of existing air-cooled heat pumps and water-cooled units, integrating the advantages of both air-cooling and water-cooling technologies to create a new high-efficiency model that combines the two. It will drive a new revolution in the field of air conditioning technology, completely replace existing products, change the existing duopoly of "air-cooled heat pump units" and "water-cooled chillers", create the third category in the world's air conditioning industry, and usher in a new era of central air conditioning development. It can completely replace existing air conditioners and subvert traditional understanding of air conditioning. Attached Figure Description

[0054] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0055] Figure 1 This is a schematic diagram of the piping structure of the multi-source hot and cold water pump module unit;

[0056] Figures 2-4 A schematic diagram of the piping design for the refrigerant pump push module;

[0057] Figures 5-8 A schematic diagram of the piping design for the rectifier module;

[0058] Figures 9-10 A schematic diagram of the piping design for the heat exchanger module;

[0059] Figures 11-12 A schematic diagram of the piping design for the ejector module;

[0060] Figure 13 A schematic diagram of the piping design for using the side module;

[0061] Figures 14-16 A schematic diagram of the piping design for the hydraulic module;

[0062] Figure 17 A schematic diagram showing the design of the connection pipeline between the side module and the hydraulic module;

[0063] Figure 18 A schematic diagram of the piping structure on the service side of a multi-source hot and cold water pump unit.

[0064] Figures 19-25 The following are schematic diagrams of the pipeline structure corresponding to the working modes of Examples 1 to 7, respectively. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] Reference Figure 1 A multi-source hot and cold water module unit with ejector, comprising a refrigerant pump push module, a rectifier module, a heat exchanger module, an ejector module, a user-side module, and a hydraulic module.

[0067] The refrigerant pump push module includes a compressor 11, which is provided with a steam injection port and a return gas port;

[0068] The steam injection port forms nodes A1 and A2, which are connected to the heat exchanger module of the cold and heat source, and node B, which is connected to the module on the user side, through a multi-way valve group and pipeline; node C, which is connected to the ejector module, is formed between node A1 (or node A2) and node B through a multi-way valve group and pipeline.

[0069] The return air port is connected to node D of the ejector module via a pipeline.

[0070] Figure 2 This paper illustrates one implementation of a multi-port valve group in a refrigerant pump push module, which consists of a first four-port valve Q1 and a second four-port valve Q2. The steam injection port, node A1, and node C are respectively connected to the three valve ports of the first four-port valve Q1 through pipelines. Nodes A2, B, and C are respectively connected to the three valve ports of the second four-port valve Q2 through pipelines. The remaining valve port of the first four-port valve Q1 and the second four-port valve Q2 are connected to each other through a first connecting pipe.

[0071] Figure 3-4Other embodiments of the multi-way valve group in the refrigerant pump push module are shown, which can be a first three-way valve T1, a second three-way valve T2 and a third three-way valve T3, or a first two-way valve L1, a second two-way valve L2, a third two-way valve L3, a fourth two-way valve L4, a ninth two-way valve L9 and a tenth two-way valve L10.

[0072] The rectifier module includes node F, which is connected to the heat exchanger module of the cold and heat source through a multi-way valve group and pipelines; node G, which is connected to the user side module; node H, which is connected to the ejector module; and node I.

[0073] Figure 5 An embodiment of a multi-port valve group in a rectifier module is shown, which is a third four-port valve Q3, with nodes F, G, H and I connected to its four valve ports through pipelines;

[0074] Figure 6-8 Other embodiments of the multi-way valve group in the rectifier module are shown. It can be a fourth three-way valve T4 and a fifth three-way valve T5 arranged in parallel, or a fifth two-way valve L5 and a sixth two-way valve L6 connected in series and a seventh two-way valve L7 and an eighth two-way valve L8 connected in parallel with them, or a first one-way valve S1 and a second one-way valve S2 connected in series and a third one-way valve S3 and a fourth one-way valve S4 connected in parallel with them.

[0075] The heat exchanger module includes a water source heat exchanger 21 and an air source heat exchanger 22, as well as nodes A1' and A2' connected to the refrigerant pump push module and node F' connected to the rectifier module, respectively, through a multi-way valve group and pipelines.

[0076] Figure 9 An embodiment of a multi-way valve group in a cold and heat source heat exchanger module is shown, which is a sixth three-way valve T6. The water source heat exchanger 21, the air source heat exchanger 22, and node F' are respectively connected to the three valve ports of the sixth three-way valve T6 through pipelines. The water source heat exchanger 21 is connected to the refrigerant pump push module through node A1', and the air source heat exchanger 22 is connected to the refrigerant pump push module through node A2'.

[0077] Figure 10 Other embodiments of the multi-way valve group in the heat exchanger module are shown, which can be an eleventh two-way valve L11 and a twelfth two-way valve L12.

[0078] The ejector module includes an ejector 31, a gas-liquid separator 32, and nodes H' and I' connected to the rectifier module respectively through a multi-way valve group and pipelines;

[0079] The ejector 31 is provided with an air inlet, an air intake, and an ejection port;

[0080] The gas-liquid separator 32 is provided with a first refrigerant inlet, a first refrigerant outlet, a second refrigerant inlet, and a second refrigerant outlet;

[0081] The intake port has a node C' connected to the refrigerant pump push module, the first refrigerant outlet has a node D' connected to the refrigerant pump push module, and the injection port is connected to the first refrigerant inlet.

[0082] Figure 11 An embodiment of the multi-way valve group in the ejector module is shown, which is a seventh three-way valve T7. The air inlet, node I', and the second refrigerant inlet are respectively connected to the three valve ports of the seventh three-way valve T7 through pipelines, and the second refrigerant outlet is connected to node H' through a cold and heat expansion valve.

[0083] Figure 12 Other embodiments of the multi-way valve group in the ejector module are shown, which can be a thirteenth two-way valve L13 and a fourteenth two-way valve L14.

[0084] Use side modules, including indoor side heat exchanger 41;

[0085] Reference Figure 13 The indoor heat exchanger 41 has a chilled water inlet and a chilled water outlet;

[0086] The indoor heat exchanger 41 also has a node B' connected to the refrigerant pump push module and a node G' connected to the rectifier module.

[0087] Hydraulic module, including cooling water inlet and cooling water outlet;

[0088] Water source heat exchanger 21 is connected in series between cooling water inlet and cooling water outlet;

[0089] A multi-source cooling system is connected in parallel at the cooling water inlet and cooling water outlet;

[0090] Reference Figures 14-15 Multi-source cooling systems include closed-loop cooling systems or open-loop cooling systems;

[0091] The cooling water inlet pipeline is equipped with a filter, a cooling water pump, a check valve, and a water source heat exchanger control valve;

[0092] The cooling water inlet pipe is also connected to a pressure stabilizing tank, a water supply control valve, and a water supply pump, forming a constant pressure water supply system.

[0093] Reference Figure 16 Preferably, the multi-source cooling system further includes:

[0094] Waste (heat) water source heat exchanger and waste (heat) water source control valve, solar collector heat exchanger and solar control valve, ground (water) source heat exchanger and ground (water) source control valve are installed in parallel at the cooling water inlet and cooling water outlet.

[0095] The nodes A1 and A1', A2 and A2', B and B', C and C', D and D', F and F', G and G', H and H', and I and I' are connected accordingly.

[0096] Figure 17 A feasible connection piping structure using a side module and a hydraulic module in a multi-source cooling embodiment is shown.

[0097] This application also relates to a multi-source hot and cold water pump unit with ejector, which includes the refrigerant pump push module, rectifier module, cold and heat source heat exchanger module, ejector module, user side module and hydraulic module as described in any of the above embodiments.

[0098] Reference Figure 18 Its side module includes multiple sets of indoor side heat exchangers 41 arranged in parallel.

[0099] The following section will provide a detailed description of the ejector multi-source hot and cold water pump module unit of this application, in conjunction with the accompanying drawings and different operating modes of the unit.

[0100] Example 1

[0101] Reference Figure 19 Air-cooled conventional cooling mode:

[0102] Refrigerant circulation system: The first four-way valve Q1ob and ai ends are connected; the second four-way valve Q2ia and bo ends are connected; the third four-way valve Q3ib and ao ends are connected; the sixth three-way valve T6oa end is connected; the seventh three-way valve T7bo end is connected.

[0103] Refrigerant circulation path: The refrigerant flows sequentially through the compressor 11 injection port, the first valve port o and the fourth valve port b of the first four-way valve Q1, the first valve port o and the fourth valve port b of the second four-way valve Q2, the air source heat exchanger 22, the second valve port a and the first valve port o of the sixth three-way valve T6, the first valve port o and the third valve port a of the third four-way valve Q3 of the rectifier module, the first valve port o and the third valve port b of the seventh three-way valve T7 of the ejector module, and the second refrigerant inlet of the gas-liquid separator 32. After refrigerant gas-liquid separation... Low-pressure refrigerant vapor passes through the first refrigerant outlet of gas-liquid separator 32 and the return port of compressor 11 to complete a high-pressure cycle; refrigerant liquid passes through the second refrigerant outlet of gas-liquid separator 32, the heating and cooling expansion valve, the fourth valve port b and the second valve port i of the third four-way valve Q3, the indoor heat exchanger 41, the third valve port a and the second valve port i of the second four-way valve Q2, the suction port and the injection port of ejector 31, the first refrigerant inlet and the first refrigerant outlet of gas-liquid separator 32, and the return port of compressor 11 to complete a refrigeration cycle.

[0104] Water circulation system:

[0105] 1) Cooling system: The water source heat exchanger control valve is closed, the cooling water pump is closed, and the water source heat exchanger 21 stops working; the fan is turned on, and the air source heat exchanger 22 is working.

[0106] Lower-temperature air from the environment flows over the surface of the air source heat exchanger 22 under the action of the fan, exchanges heat with the refrigerant vapor inside the heat exchanger and is heated up, and is discharged through the exhaust port of the heat exchanger unit. The higher-temperature refrigerant vapor is cooled and liquefied and enters the rectifier module.

[0107] 2) Refrigeration System: Higher-temperature chilled water from the room is pumped through the chilled water inlet, heat exchanger inlet, and into the indoor heat exchanger 41. It exchanges heat with the liquid refrigerant flowing inside the heat exchanger, cooling the water. The cooled water then exits through the heat exchanger outlet and chilled water outlet, entering the room for cooling. The liquid refrigerant vaporizes, absorbs heat, and heats up before continuing to the next process. Low-temperature chilled water exchanges heat with the indoor air, heating up, and then flows back to the indoor heat exchanger 41 to continue heat exchange, completing one cooling cycle.

[0108] The constant pressure water supply system opens the water supply electric valve when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0109] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0110] Example 2

[0111] Reference Figure 20 Air-cooled ejector cooling mode:

[0112] Refrigerant circulation system: The first four-way valve Q1bo and ai ends are connected; the second four-way valve Q2ob and ai ends are connected; the third four-way valve Q3ib and ao ends are connected; the sixth three-way valve T6ao end is connected; the seventh three-way valve T7ao end is connected.

[0113] In the high-pressure refrigerant circuit of the refrigerant circulation, the refrigerant flows sequentially through the steam injection port of compressor 11, the first valve port o and the fourth valve port b of the first four-way valve Q1, the first valve port o and the fourth valve port b of the second four-way valve Q2, the air source heat exchanger 22, the second valve port a and the first valve port o of the sixth three-way valve T6, the first valve port o and the third valve port a of the third four-way valve Q3, the first valve port o and the second valve port a of the seventh three-way valve T7 of the ejector module, the air inlet of ejector 31, the injection port of ejector 31, the first refrigerant inlet of gas-liquid separator 32, the first refrigerant outlet of refrigerant, and the return port of compressor 11.

[0114] In the low-pressure refrigerant circuit of the refrigerant cycle, the refrigerant completes one refrigeration cycle by passing through the second refrigerant outlet of the gas-liquid separator 32, the cold and heat expansion valve, the fourth valve port b and the second valve port i of the third four-way valve Q3, the indoor heat exchanger 41, the third valve port a and the second valve port i of the second four-way valve Q2, the suction port and the injection port of the ejector 31, the first refrigerant inlet and the first refrigerant outlet of the gas-liquid separator 32, and the return port of the compressor 11.

[0115] Water circulation system:

[0116] 1) Cooling system: The water source heat exchanger control valve is closed, the cooling water pump is closed, and the water source heat exchanger 21 stops working; the fan is turned on, and the air source heat exchanger 22 is working.

[0117] Lower-temperature air from the environment flows over the surface of the air source heat exchanger 22 under the action of the fan, exchanges heat with the refrigerant vapor inside the heat exchanger and is heated up, and is discharged through the exhaust port of the heat exchanger unit. The higher-temperature refrigerant vapor is cooled and liquefied and enters the rectifier module.

[0118] 2) Refrigeration System: Higher-temperature chilled water from the room is pumped through the chilled water inlet, heat exchanger inlet, and into the indoor heat exchanger 41. It exchanges heat with the liquid refrigerant flowing inside the heat exchanger, cooling the water. The cooled water then exits through the heat exchanger outlet and chilled water outlet, entering the room for cooling. The liquid refrigerant vaporizes, absorbs heat, and heats up before continuing to the next process. Low-temperature chilled water exchanges heat with the indoor air, heating up, and then flows back to the indoor heat exchanger 41 to continue heat exchange, completing one cooling cycle.

[0119] The constant pressure water supply system opens the water supply electric valve when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0120] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0121] Example 3

[0122] Reference Figure 21 Water-cooled conventional cooling mode:

[0123] Refrigerant circulation system: The first four-way valve Q1ao and bi ends are connected; the second four-way valve Q2ob and ai ends are connected; the third four-way valve Q3oa and bi ends are connected; the sixth three-way valve T6bo end is connected; the seventh three-way valve T7ob end is connected.

[0124] Refrigerant circulation path: First port o and third port a of the first four-way valve Q1, water source heat exchanger 21, third port b and first port o of the sixth three-way valve T6, first port o and third port a of the third four-way valve Q3 of the rectifier module, first port o and third port b of the seventh three-way valve T7 of the ejector module, second refrigerant inlet of gas-liquid separator 32, second refrigerant outlet, cold and heat expansion valve, fourth port b and second port i of the third four-way valve Q3, indoor heat exchanger 41, third port a and second port i of the second four-way valve Q2, suction port and injection port of ejector 31, first refrigerant outlet of gas-liquid separator 32, return port of compressor 11.

[0125] Water circulation system:

[0126] Cooling system: The fan is turned off, and the air source heat exchanger 22 stops working; the water source heat exchanger control valve is opened, the cooling water pump is turned on, and the water source heat exchanger 21 is working.

[0127] Cooling water (refrigerant) at a lower temperature from the cooling tower is propelled by a pump through a filter, cooling water pump, check valve, cooling water inlet, water source heat exchanger control valve, and then enters water source heat exchanger 21. The low-temperature cooling water exchanges heat with the high-temperature refrigerant vapor in water source heat exchanger 21, then cools down through the heat exchanger outlet, cooling water outlet, water source heat exchanger control valve, and finally enters water source heat exchanger 21 for the next cycle. The higher-temperature refrigerant, after cooling and liquefying, enters the rectifier module.

[0128] Refrigeration System: Higher-temperature chilled water from indoors, driven by a chilled water pump, flows through the chilled water inlet, heat exchanger inlet, and into the indoor heat exchanger 41. There, it exchanges heat with the liquid refrigerant flowing through the heat exchanger, cooling the water before exiting through the heat exchanger outlet and chilled water outlet to supply cooling to the room. The liquid refrigerant vaporizes, absorbs heat, and heats up before continuing to the next stage. Lower-temperature chilled water exchanges heat with indoor air, heating up before returning to the indoor heat exchanger 41 to continue heat exchange, completing one cooling cycle.

[0129] The constant pressure water supply system opens the water supply electric valve when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0130] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0131] Example 4

[0132] Reference Figure 22 Water-cooled ejector cooling mode:

[0133] Refrigerant circulation system: The first four-way valve Q1oa and bi ends are connected; the second four-way valve Q2ob and ai ends are connected; the third four-way valve Q3oa and bi ends are connected; the sixth three-way valve T6bo end is connected; the seventh three-way valve T7ao end is connected.

[0134] In the high-pressure refrigerant circuit of the refrigerant circulation, the refrigerant flows sequentially through the steam injection port of the compressor 11, the first valve port o and the third valve port a of the first four-way valve Q1, the water source heat exchanger 21, the third valve port b and the first valve port o of the sixth three-way valve T6, the first valve port o and the third valve port a of the third four-way valve Q3, the first valve port o and the second valve port a of the seventh three-way valve T7 of the ejector module, the air inlet and the injection port of the ejector 31, the first refrigerant inlet and the first refrigerant outlet of the gas-liquid separator 32, and the suction port of the compressor 11.

[0135] In the low-pressure refrigerant circuit of the refrigerant circulation, the refrigerant flows sequentially through the second refrigerant outlet of the gas-liquid separator 32, the cold and heat expansion valve, the fourth valve port b and the second valve port i of the third four-way valve Q3, the indoor heat exchanger 41, the third valve port a and the second valve port i of the second four-way valve Q2, the suction port and the injection port of the ejector 31, the first refrigerant outlet of the gas-liquid separator 32, and the return port of the compressor 11.

[0136] In the high-pressure refrigeration cycle, the high-pressure, high-speed two-phase refrigerant serves as the working fluid. It enters the mixing chamber of ejector 31 from the inlet and entrains low-pressure, low-speed refrigerant vapor from the intake port. The two refrigerant streams exchange momentum and mass within the mixing chamber of ejector 31, resulting in increased mixing pressure. After deceleration in the diffuser chamber, the pressure further increases before being discharged from the ejector 31 outlet. The refrigeration cycle with the addition of ejector 31 can effectively absorb power losses caused by the work of compressor 11, expansion valve pressure reduction, and pipeline friction, thereby improving the overall efficiency of the refrigeration cycle without increasing the power of compressor 11.

[0137] Water circulation system:

[0138] 1) Cooling system: The water source heat exchanger control valve is opened, the cooling water pump is turned on, and the water source heat exchanger 21 is working; the fan is turned off, and the air source heat exchanger 22 stops working.

[0139] Cooling water (refrigerant) at a lower temperature from the cooling tower is propelled by a pump through a filter, cooling water pump, check valve, cooling water inlet, water source heat exchanger control valve, and then enters water source heat exchanger 21. The low-temperature cooling water exchanges heat with the high-temperature refrigerant vapor in water source heat exchanger 21, then cools down via the heat exchanger outlet, cooling water outlet, water source control valve, and finally enters water source heat exchanger 21 again for the next cycle. The refrigerant, after cooling and liquefying, enters the rectifier module.

[0140] 2) Refrigeration System: Higher-temperature chilled water from the room is pumped through the chilled water inlet, heat exchanger inlet, and into the indoor heat exchanger 41. It exchanges heat with the liquid refrigerant flowing inside the heat exchanger, cooling the water. The cooled water then exits through the heat exchanger outlet and chilled water outlet, entering the room for cooling. The liquid refrigerant vaporizes, absorbs heat, and heats up before continuing to the next process. Low-temperature chilled water exchanges heat with the indoor air, heating up, and then flows back to the indoor heat exchanger 41 to continue heat exchange, completing one cooling cycle.

[0141] The constant pressure water supply system opens the water supply electric valve when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0142] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0143] Example 5

[0144] Reference Figure 23 Air source heat pump conventional heating mode:

[0145] Refrigerant circulation system: The first four-way valve Q1ob and ai ends are connected; the second four-way valve Q2oa and bi ends are connected; the third four-way valve Q3ia and bo ends are connected; the sixth three-way valve T6ao end is connected; the seventh three-way valve T7ob end is connected.

[0146] In the high-pressure refrigerant circuit of the refrigerant circulation: the refrigerant flows sequentially through the steam injection port of compressor 11, the first valve port o and the fourth valve port b of the first four-way valve Q1, the first valve port o and the third valve port a of the second four-way valve Q2, the indoor heat exchanger 41, the second valve port i and the third valve port a of the third four-way valve Q3 of the rectifier module, the first valve port o and the third valve port b of the seventh three-way valve T7 of the ejector module, the second refrigerant inlet of the gas-liquid separator 32, the gaseous refrigerant through the first refrigerant outlet of the gas-liquid separator 32, and the return port of compressor 11.

[0147] In the low-pressure refrigerant circuit of the refrigerant cycle, the refrigerant liquid flows sequentially through the second refrigerant outlet of the gas-liquid separator 32, the cold and heat expansion valve, the fourth valve port b and the first valve port o of the third four-way valve Q3, the first valve port o and the second valve port a of the sixth three-way valve T6 of the cold and heat source heat exchanger module, the air source heat exchanger 22, the fourth valve port b and the second valve port i of the second four-way valve Q2, the suction port and the injection port of the ejector 31, the first refrigerant inlet and the first refrigerant outlet of the gas-liquid separator 32, and the return gas of the compressor 11 to complete one refrigeration cycle.

[0148] Water circulation system:

[0149] 1) Cooling System: The cooling water pump is shut down, the water source heat exchanger control valve is closed, and the water source heat exchanger 21 stops working; the fan starts, and the air source heat exchanger 22 starts working. Outdoor air exchanges heat with the air source heat exchanger 22 under the action of the fan. The refrigerant absorbs heat, vaporizes, and rises in temperature before starting the next cycle; the air is cooled down and discharged from the unit.

[0150] 2) Refrigeration system:

[0151] Lower-temperature chilled water from indoors is pumped through a Y-type filter, chilled water pump, check valve, indoor heat exchanger control valve, chilled water inlet, and enters indoor heat exchanger 41. There, it exchanges heat with the liquid refrigerant flowing through the heat exchanger, increasing its temperature before exiting the heat exchanger and entering the room for heating. The vaporized refrigerant liquefies, releasing heat and cooling down, before continuing to the next process. Higher-temperature chilled water exchanges heat with indoor air, cooling down, and then flows back to indoor heat exchanger 41 to continue absorbing heat, completing one heating cycle.

[0152] The constant pressure water supply system opens the water supply electric valve when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0153] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0154] Example 6

[0155] Reference Figure 24 Air-cooled heat pump ejector heating mode:

[0156] Refrigerant circulation system: The first four-way valve Q1ob and ai ends are connected; the second four-way valve Q2oa and bi ends are connected; the third four-way valve Q3ia and bo ends are connected; the sixth three-way valve T6ao end is connected; the seventh three-way valve T7ao end is connected.

[0157] In the high-pressure refrigerant circuit, the refrigerant flows sequentially through the compressor 11 injection port, the first valve port o and the fourth valve port b of the first four-way valve Q1, the first valve port o and the third valve port a of the second four-way valve Q2, the indoor heat exchanger 41, the second valve port i and the third valve port a of the third four-way valve Q3 of the rectifier module, the first valve port o and the second valve port a of the seventh three-way valve T7 of the ejector module, the ejector 31 inlet, the injection port, the refrigerant first inlet of the gas-liquid separator 32, and the refrigerant vapor through the refrigerant first outlet to the compressor 11 return port.

[0158] In the low-pressure refrigerant circuit, the liquid refrigerant flows sequentially through the second refrigerant outlet of the gas-liquid separator 32, the cold and warm expansion valve, the fourth valve port b and the first valve port o of the third four-way valve Q3, the first valve port o and the second valve port a of the sixth three-way valve T6 of the cold and heat source heat exchanger module, the air source heat exchanger 22, the fourth valve port b and the second valve port i of the second four-way valve Q2, the ejector suction port, the injection port, the first refrigerant inlet of the gas-liquid separator 32, the first refrigerant outlet, and the compressor 11 to complete one refrigeration cycle.

[0159] In the high-pressure refrigeration cycle, the high-pressure, high-speed two-phase refrigerant serves as the working fluid. It enters the mixing chamber of ejector 31 from the inlet and entrains low-pressure, low-speed refrigerant vapor from the intake port. The two refrigerant streams exchange momentum and mass within the mixing chamber of ejector 31, resulting in increased mixing pressure. After deceleration in the diffuser chamber, the pressure further increases before being discharged from the ejector 31 outlet. The refrigeration cycle with the addition of ejector 31 can effectively absorb power losses caused by the work of compressor 11, expansion valve pressure reduction, and pipeline friction, thereby improving the overall efficiency of the refrigeration cycle without increasing the power of compressor 11.

[0160] 1) Cold and heat source system: The cooling water pump is turned off, the control valve of the water source heat exchanger is closed, and the water source heat exchanger 21 stops working; the fan starts, and the air source heat exchanger 22 works. Outdoor air exchanges heat with the air source heat exchanger 22 under the action of the fan. The refrigerant absorbs heat, vaporizes, and rises in temperature before starting the next cycle; the air is cooled down and discharged from the unit.

[0161] 2) Refrigeration System: Lower-temperature chilled water from the indoor unit is pumped into the indoor heat exchanger 41 by a chilled water pump. It exchanges heat with the liquid refrigerant flowing through the heat exchanger, raising its temperature before exiting the heat exchanger and supplying heat to the room. The vaporized refrigerant liquefies, releasing heat and cooling down, before continuing to the next stage. High-temperature chilled water exchanges heat with the indoor air, cooling down, and then flows back to the indoor heat exchanger 41 to continue absorbing heat, completing one heating cycle.

[0162] The constant pressure water supply system opens the water supply electromagnetic switch when the pressure reaches a certain point and closes when the pressure exceeds that point.

[0163] The cooling system and the refrigeration system use the same refrigerant, such as water, ethylene glycol aqueous solution, calcium chloride aqueous solution, etc.

[0164] Example 7

[0165] Reference Figure 25 Air-cooled heat pump in standard defrosting mode:

[0166] Refrigerant circulation system: The first four-way valve Q1bo and ai ends are connected; the second four-way valve Q2ob and ai ends are connected; the third four-way valve Q3ib and ao ends are connected; the sixth three-way valve T6oa end is connected; the seventh three-way valve T7bo end is connected.

[0167] Refrigerant circulation path: The refrigerant flows sequentially through the compressor 11 injection port, the first valve port o and the fourth valve port b of the first four-way valve Q1, the first valve port o and the fourth valve port b of the second four-way valve Q2, the air source heat exchanger 22, the second valve port a and the first valve port o of the sixth three-way valve T6, the first valve port o and the third valve port a of the third four-way valve Q3 of the rectifier module, the first valve port o and the third valve port b of the seventh three-way valve T7 of the ejector module, and the second refrigerant inlet of the gas-liquid separator 32. The refrigerant vapor enters the compressor 11 return port through the first refrigerant outlet of the gas-liquid separator 32. The liquid refrigerant completes one defrosting cycle through the second refrigerant outlet of the gas-liquid separator 32, the cold and heat expansion valve, the fourth valve port b and the second valve port i of the third four-way valve Q3, the indoor heat exchanger 41, the third valve port a and the second valve port i of the second four-way valve Q2, the suction port and the injection port of the ejector 31, the first refrigerant inlet and the first refrigerant outlet of the gas-liquid separator 32, and the compressor 11 return port.

[0168] Water circulation system:

[0169] 1) Cooling system: The water source heat exchanger control valve is closed, the cooling tower control valve is closed, and the cooling water pump is closed. The fan is off, and the air source heat exchanger 22 is in defrosting mode.

[0170] 2) Refrigeration System: Higher-temperature chilled water from the indoor unit is pumped through a Y-type filter, chilled water pump, check valve, indoor heat exchanger control valve, chilled water inlet, and enters indoor heat exchanger 41. It exchanges heat with the liquid refrigerant flowing through this heat exchanger, cooling down before exiting through the heat exchanger outlet and entering the room to absorb heat. The liquid refrigerant vaporizes, absorbing heat and rising in temperature. The low-temperature chilled water then exchanges heat with the indoor air, rising in temperature before returning to indoor heat exchanger 41, completing one cooling cycle. After vaporization in indoor heat exchanger 41, the refrigerant returns to compressor 11, generating high-temperature, high-pressure steam. This steam is then discharged from compressor 11 into air source heat exchanger 22, where it exchanges heat with the ice (frost) on the surface of air source heat exchanger 22. The refrigerant is liquefied, the ice melts, and it is discharged from the unit casing. The refrigerant then continues the next cycle, completing the defrosting process.

[0171] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-split unit consisting of a multi-source cold and hot water module unit, characterized in that: It includes a refrigerant pump push module, a rectifier module, a cold and heat source heat exchanger module, an ejector module, a user-side module, and a hydraulic module; The refrigerant pump module includes a compressor, which is equipped with a steam injection port and a return gas port; The steam injection port forms nodes A1 and A2 connected to the heat exchanger module and node B connected to the user-side module through a multi-way valve group and pipeline; node C connected to the ejector module is formed between node A1 and node B through a multi-way valve group and pipeline. The return air port is connected to node D of the ejector module via a pipeline; The rectifier module includes a node F connected to the heat exchanger module via a multi-way valve group and pipelines, a node G connected to the user-side module, a node H connected to the ejector module, and a node I. The heat exchanger module includes a water source heat exchanger and an air source heat exchanger, as well as nodes A1' and A2' connected to the refrigerant pump push module and node F' connected to the rectifier module, respectively, through a multi-way valve group and pipelines. The ejector module includes an ejector, a gas-liquid separator, and nodes H' and I' connected to the rectifier module respectively through a multi-way valve group and pipelines; The ejector is provided with an air inlet, an air intake, and an ejection port; The gas-liquid separator is provided with a first refrigerant inlet, a first refrigerant outlet, a second refrigerant inlet, and a second refrigerant outlet; The air intake has a node C' connected to the refrigerant pump push module, the first refrigerant outlet has a node D' connected to the refrigerant pump push module, and the injection port is connected to the first refrigerant inlet; The user-side module includes multiple sets of indoor-side heat exchangers arranged in parallel; The indoor heat exchanger has a chilled water inlet and a chilled water outlet; The indoor heat exchanger also has a node B' connected to the refrigerant pump push module and a node G' connected to the rectifier module; The hydraulic module includes a cooling water inlet and a cooling water outlet; The water source heat exchanger is connected in series between the cooling water inlet and the cooling water outlet; A multi-source cooling system is connected in parallel to the cooling water inlet and cooling water outlet; The multi-source cooling system includes a closed cooling system or an open cooling system; The cooling water inlet pipeline is equipped with a filter, a cooling water pump, a check valve, and a water source heat exchanger control valve. The nodes A1 and A1', A2 and A2', B and B', C and C', D and D', F and F', G and G', H and H', and I and I' are connected accordingly. In the refrigerant pump push module: The multi-way valve group consists of a first four-way valve and a second four-way valve. The steam injection port, node A1, and node C are respectively connected to the three valve ports of the first four-way valve through pipelines. Node A2, node B, and node C are respectively connected to the three valve ports of the second four-way valve through pipelines. The remaining valve ports of the first four-way valve and the second four-way valve are connected to each other through a first connecting pipe. In the rectifier module: The multi-way valve group is a third four-way valve, and nodes F, G, H and I are respectively connected to its four valve ports through pipelines; In the aforementioned heat exchanger module: The multi-way valve group is a sixth three-way valve. The water source heat exchanger, the air source heat exchanger, and node F' are respectively connected to the three valve ports of the sixth three-way valve through pipelines. The water source heat exchanger is connected to the refrigerant pump push module through node A1', and the air source heat exchanger is connected to the refrigerant pump push module through node A2'. In the ejector module: The multi-way valve group is a seventh three-way valve. The air inlet, node I', and the second refrigerant inlet are respectively connected to the three valve ports of the seventh three-way valve through pipelines. The second refrigerant outlet is connected to node H' through a cold and heat expansion valve.

2. The multi-unit chilled and hot water module as described in claim 1, characterized in that: In the refrigerant pump push module: The multi-way valve group is replaced by a first three-way valve, a second three-way valve, and a third three-way valve. The steam injection port and the parallel nodes A1 and A2 are respectively connected to the two valve ports of the first three-way valve through pipelines. The node B and the parallel nodes A1 and A2 are respectively connected to the two valve ports of the third three-way valve through pipelines. The remaining valve ports of the first three-way valve and the third three-way valve are connected through a second connecting pipe. The nodes B, C, and the parallel nodes A1 and A2 are respectively connected to the three valve ports of the second three-way valve through pipelines. Alternatively, the multi-way valve group can be replaced by a first two-way valve, a second two-way valve, a third two-way valve, a fourth two-way valve, a ninth two-way valve, and a tenth two-way valve. The steam injection port is connected to the first two-way valve and the second two-way valve via a pipeline. Nodes A1 and A2 are connected in parallel and then connected to the first two-way valve, the third two-way valve, and the tenth two-way valve, respectively. The first two-way valve, the second two-way valve, and the ninth two-way valve are connected in series to node B. The third two-way valve and the fourth two-way valve are connected in series to node B. The tenth two-way valve is connected to the second two-way valve and the ninth two-way valve via a pipeline. Node C is connected to the third two-way valve and the fourth two-way valve via a pipeline.

3. The multi-unit chilled and hot water module as described in claim 1, characterized in that: In the rectifier module: The multi-way valve group is replaced by a fourth three-way valve and a fifth three-way valve arranged in parallel. Nodes F, H, and I are respectively connected to the three valve ports of the fourth three-way valve through pipelines, and nodes G, H, and I are respectively connected to the three valve ports of the fifth three-way valve through pipelines. Alternatively, the multi-way valve group can be replaced by a fifth two-way valve and a sixth two-way valve connected in series, and a seventh two-way valve and an eighth two-way valve connected in parallel and in series. Node F is connected between the fifth two-way valve and the sixth two-way valve, node G is connected between the seventh two-way valve and the eighth two-way valve, node H is connected between the sixth two-way valve and the eighth two-way valve, and node I is connected between the fifth two-way valve and the seventh two-way valve. Alternatively, the multi-way valve group can be replaced by a first check valve, a second check valve connected in series, and a third check valve and a fourth check valve connected in parallel with them.

4. The multi-unit chilled and hot water module as described in claim 1, characterized in that: In the aforementioned heat exchanger module: The multi-way valve group is replaced by an eleventh two-way valve and a twelfth two-way valve. The eleventh two-way valve is connected between the air source heat exchanger and node F', and the twelfth two-way valve is connected between the water source heat exchanger and node F'. The water source heat exchanger is connected to the refrigerant pump push module through node A1', and the air source heat exchanger is connected to the refrigerant pump push module through node A2'.

5. The multi-unit chilled and hot water module as described in claim 1, characterized in that: In the ejector module: The multi-way valve group is replaced by a thirteenth two-way valve and a fourteenth two-way valve. The thirteenth two-way valve is connected between the air inlet and node I', and the fourteenth two-way valve is connected between the second refrigerant inlet and node I'. The second refrigerant outlet is connected to node H' through a heating and cooling expansion valve.

6. The multi-unit chilled and hot water module as described in claim 1, characterized in that: The multi-source cooling system also includes a waste hot water source heat exchanger and a waste hot water source control valve, a solar collector heat exchanger and a solar control valve, and a ground / water source heat exchanger and a ground / water source control valve, which are connected in parallel at the cooling water inlet and cooling water outlet.

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