Multi-heat-source combined heat supply energy-saving device
Through the combined heating system of boiler steam and ground source heat pump, combined with precise valve and equipment control, the energy waste problem of constant temperature and humidity rooms in industrial enterprises is solved, and an efficient and energy-saving heating solution is achieved.
Patent Information
- Application Number
- CN202421762042.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-24
AI Technical Summary
Rooms that need to maintain constant temperature and humidity for 24 hours in industrial enterprises lead to waste of energy, and the existing heating systems are inefficient and difficult to accurately adjust.
The boiler steam and ground source heat pump are used to provide heat together, and the valves and equipment switch control is used to accurately adjust the cold/heat and humidification amount according to different working conditions and times.
It improves energy utilization, reduces energy consumption, and improves the flexibility and energy-saving effect of the heating system.
Smart Images
Figure CN222824488U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heating, and in particular relates to a multi-heat source combined heating energy-saving device. Background Art
[0002] During the production process of industrial enterprises, some processes need to maintain a constant temperature and humidity operating environment. For example, the silk-making workshop in a cigarette factory only needs to maintain a constant temperature and humidity during production. However, the silk storage room, leaf storage room and auxiliary material balance room need to maintain a constant temperature and humidity process environment 24 hours a day. In order to maintain the temperature and humidity of the silk storage room, leaf storage room and auxiliary material balance room during non-production periods, a large amount of energy waste will be caused.
[0003] The production process of some industrial enterprises' production workshops has high requirements for the environment, which needs to be adjusted by air conditioning systems. Among them, the air conditioning energy consumption of the industrial plant of the cigarette factory accounts for about 40% of the entire tobacco enterprise. Therefore, achieving energy-saving operation of the air conditioning system is the key to improving the economic benefits of tobacco enterprises. The load sources of the cigarette factory are mainly production equipment, lighting, materials, personnel, enclosure structure and fresh air. The production processes of different workshops are different, and the load characteristics are also different, but the main production workshops such as the rolling and packaging workshops and the silk-making workshops have large equipment heat generation. The silk-making workshop has a large amount of moisture produced during the production process, and the local exhaust takes away most of the moisture load, but it still has a large moisture load compared to other workshops. The moisture load of other workshops mainly comes from the staff. The workshop area of the cigarette factory is large, the staff density is small, and the moisture load is very small. Workshops such as the leaf storage room, silk storage room, and auxiliary material balance room are tobacco and raw material storage workshops. The air conditioning load is small, but the stability requirements of the workshop process indicators are high. Among them, the leaf storage room needs to be maintained at 35-40℃ throughout the year, which is a heat load throughout the year. The different workshops in the joint workshop show the characteristics of coexistence of cold and heat loads.
[0004] According to the different sources of air conditioning heating compensation system, heating methods include electric heating steam generator, solar heating, steam outsourcing and ground source heat pump heating. The main working principle of electric heating steam generator is to convert electrical energy into thermal energy, and then heat water into steam. The electric-to-heat conversion efficiency is high and the operation is simple and convenient, but because it greatly increases the power consumption, the economy is poor; although solar heating is a clean energy, solar energy has great instability, and auxiliary heating is required on cloudy days and at night, and the maintenance cost is high; the method of steam outsourcing has high requirements on the location of the steam source, and long-distance steam transportation will cause a large loss of steam energy, and the pipeline maintenance cost is high; the ground source heat pump uses the heat of the underground soil as the cold and heat source. The underground soil temperature is relatively stable all year round, the energy consumption is small, and the operating cost is low.
[0005] At present, for rooms in industrial enterprises that need to maintain a 24-hour constant temperature and humidity process environment, only refrigeration units and boilers are used to provide heat and cold exchange energy for air-conditioning units. These factories have high temperature and humidity requirements, resulting in large energy loss problems that need to be solved urgently. Therefore, this application proposes a multi-heat source combined heating energy-saving device, which uses boiler steam and ground source heat pumps for combined heating, and meets the temperature and humidity requirements of different types of workshops through the switch start and stop control of each valve and each equipment. The temperature and humidity standards of the room that needs to maintain a constant temperature and humidity during the non-production period are analyzed, and the cold / heat and humidification required at different times are accurately controlled to achieve the optimal energy supply plan, thereby increasing energy utilization and reducing energy consumption. Utility Model Content
[0006] The technical problem solved by the utility model is to provide a multi-heat source combined heating energy-saving device. The purpose of the utility model is to collect the temperature and humidity of each room in real time according to needs through multi-heat source combined heating, and to accurately adjust the heating and humidification of each room according to different working conditions and different times, so as to achieve energy saving and consumption reduction.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0008] A multi-heat source combined heating energy-saving device, comprising:
[0009] A boiler, wherein the steam outlet of the boiler is connected to the air inlet of each air-conditioning unit through a steam cylinder, and the steam of the boiler is transported to each air-conditioning unit through the steam cylinder to perform steam heating or steam humidification indoors;
[0010] A refrigeration unit, wherein the water outlet of the refrigeration unit is connected to the water inlet of each air-conditioning unit through a water distributor, the water return port of each air-conditioning unit is connected to the water inlet of the water collector, and the water outlet of the water collector is connected to the suction port of the refrigeration unit; the refrigeration unit transfers the cooled fluid medium to each air-conditioning unit through the water distributor for heat exchange, and the return water of each air-conditioning unit after heat exchange returns to the water collector and then is transferred to the refrigeration unit;
[0011] A ground source heat pump unit, wherein the water outlet of the ground source heat pump unit is connected to the water inlet of each air conditioning unit through a water distributor, and the suction port of the ground source heat pump unit is connected to the water outlet of the water collector; the ground source heat pump unit transfers the heated or cooled fluid medium to each air conditioning unit through the water distributor for heat exchange, thereby providing heating or cooling to the room, and the return water of each air conditioning unit after heat exchange returns to the water collector and is then transported back to the ground source heat pump unit.
[0012] To further limit the above scheme, a chilled water pump is provided on the water outlet side of the water collector, and the chilled water pump is connected to the suction side of the ground source heat pump unit and the refrigeration unit. The chilled water pump transports the return water from each air-conditioning unit to the water collector for circulation to supply the ground source heat pump unit and the refrigeration unit.
[0013] As a further limitation of the above scheme, a soft-sealed pneumatic regulating valve is provided on the steam supply pipe network from the steam cylinder to each air-conditioning unit.
[0014] To further limit the above scheme, automatic flow meters are provided on the boiler outlet side and the inlet side of each air-conditioning unit; temperature sensors are provided on the connecting pipe section from the steam cylinder to each air-conditioning unit, on the connecting pipe section from the water distributor to each air-conditioning unit, and on the water outlet side of the water collector.
[0015] To further limit the above scheme, electric switching valves are provided on the connecting pipe sections between the refrigeration unit and the water distributor and the water collector, and on the connecting pipe sections between the ground source heat pump unit and the water distributor and the water collector; electric regulating valves are provided on the connecting pipe sections between the water distributor and each air-conditioning unit; and stop valves are provided on the suction inlet sides of the refrigeration unit and the ground source heat pump unit.
[0016] To further limit the above scheme, the air-conditioning unit internally includes an air mixing section, a filtering section, a surface cooling section, a steam heating section, a steam humidification section, a high-pressure micro-mist humidification section and a blower section, and the surface cooler in the surface cooling section is configured as a hot water radiator; the steam heating section and the steam humidification section are both connected to the steam pipeline output by the cylinder and allow the steam to heat and humidify the indoor room through the air-conditioning unit; the high-pressure micro-mist humidification section humidifies the indoor room through high-pressure micro-mist.
[0017] The advantages of this utility model compared with the prior art:
[0018] 1. This scheme improves the heating system. On the basis of the conventional heating system, it increases the use of boiler waste pressure steam and adds a ground source heat pump as a clean energy to provide heat for the air conditioning unit. According to the actual production process requirements and different working conditions in each season, the refrigeration station, ground source heat pump and boiler steam are combined as cold / heat sources to provide cooling / heating for the air conditioning terminal units in each room of the industrial plant. The micro-fog system and boiler steam are combined for indoor humidification, so that the heat source of the air conditioning unit automatically switches between direct boiler heating, steam waste pressure heating and ground source heat pump heating as needed, and combines boiler waste pressure steam humidification and air conditioning micro-fog humidification to meet the indoor humidity requirements, greatly improving the heating flexibility of the heating system, reducing the primary energy consumption, and having the advantages of high energy utilization rate and significant energy saving effect.
[0019] 2. This solution sets soft-sealed pneumatic regulating valves of different sizes in parallel on the pipe section from the steam cylinder to the air-conditioning unit to match the steam consumption of the air-conditioning unit and to more accurately regulate and transmit the residual pressure steam. While controlling the steam flow, the soft-sealed pneumatic regulating valve also cools and depressurizes the steam, further reducing the extended heat loss during steam transportation;
[0020] 3. The heating energy-saving device of this scheme has a simple structure. By transforming the surface cooler into a hot water radiator, it can meet the dual-condition operation of each room in the industrial plant and flexibly control each air-conditioning unit according to different production process requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of a process flow of a multi-heat source combined heating energy-saving device provided by the utility model;
[0022] Figure 2 It is a schematic diagram of the internal structure of the air conditioning unit in the utility model. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.
[0025] See also Figure 1-2 , describe the embodiments of the present utility model in detail.
[0026] Embodiment: A multi-heat source combined heating energy-saving device, see Figure 1 As shown, including:
[0027] Boiler 2: The steam outlet of the boiler 2 is connected to the air inlet of each air-conditioning unit 1 through the sub-cylinder 5. The boiler steam is used as one of the heat sources of the air-conditioning unit. The steam of the boiler 2 is transported to each air-conditioning unit 1 through the sub-cylinder 5 to perform steam heating or steam humidification indoors;
[0028] A soft-sealed pneumatic regulating valve 9 is provided on the steam supply network from the steam cylinder 5 to each air-conditioning unit 1. The soft-sealed pneumatic regulating valve uses the gas source as power to drive the valve to rotate, thereby adjusting the process parameters such as the flow, pressure, and temperature of the steam in the pipeline.
[0029] In the above structure of this embodiment, on the basis of the conventional heating system, the use of residual pressure steam in the sub-cylinder after the boiler stops running is added. After the boiler stops running during the non-production period, the residual pressure steam is stored in the sub-cylinder for use. The residual pressure steam is accurately adjusted and supplied by setting soft-sealed pneumatic regulating valves of different sizes at the outlet of the sub-cylinder. According to the different temperature and humidity requirements of different rooms, the residual pressure steam is used to heat and humidify the room. While the pneumatic regulating valve accurately controls the steam flow, it also cools and depressurizes the steam, reducing the extended heat loss during the steam transportation process.
[0030] Refrigeration unit 3: The water outlet of the refrigeration unit 3 is connected to the water inlet of each air-conditioning unit 1 through a water distributor 6, the return water outlet of each air-conditioning unit 1 is connected to the water inlet of a water collector 7, and the water outlet of the water collector 7 is connected to the suction port of the refrigeration unit 3; the refrigeration unit 3 transfers the cooled fluid medium to each air-conditioning unit 1 through the water distributor 6 for heat exchange, and the return water of each air-conditioning unit 1 after heat exchange returns to the water collector 7 and then is transferred to the refrigeration unit 3.
[0031] Ground source heat pump unit 4: The water outlet of the ground source heat pump unit 4 is connected to the water inlet of each air-conditioning unit 1 through a water distributor 6, and the suction port of the ground source heat pump unit 4 is connected to the water outlet of the water collector 7; the ground source heat pump unit extracts heat from underground soil. According to different seasonal working conditions, the ground source heat pump unit 4 transfers the heated or cooled fluid medium to each air-conditioning unit 1 through the water distributor 6 for heat exchange, thereby providing heating or cooling to the room. After the heat exchange, the return water of each air-conditioning unit 1 returns to the water collector 7 and is then transported back to the ground source heat pump unit 4.
[0032] In the above structure of this embodiment, on the basis of the conventional heating system, a ground source heat pump unit is added to provide a heat source for the air conditioning terminal. After the ground source heat pump unit obtains soil heat from the ground, it transfers the heat to each room through a water distributor. The ground source heat pump unit can provide a heat source or a cold source for the air conditioning unit according to different operating conditions in different seasons. The deep underground soil maintains a relatively stable temperature, generally at a depth of 10 to 100 meters below the surface. The ground source heat pump uses this underground heat source to achieve heating or cooling. The ground source heat pump system transfers underground heat energy or cold energy to the ground source heat pump system through dense pipes buried underground, and then transports the heated or cooled medium fluid to the air conditioning unit in each room through a water distributor to provide indoor heating or cooling.
[0033] In one specific embodiment: see Figure 1 As shown, a chilled water pump 8 is provided on the water outlet side of the water collector 7, and the chilled water pump 8 is connected to the suction side of the ground source heat pump unit 4 and the refrigeration unit 3. The chilled water pump 8 transports the return water from each air-conditioning unit 1 to the water collector 7 after heat exchange to supply the ground source heat pump unit 4 and the refrigeration unit 3.
[0034] In one specific embodiment: see Figure 1 As shown, the outlet side of the boiler 2 and the inlet side of each air-conditioning unit 1 are both provided with automatic flow meters 10 for recording the amount of steam delivered from the boiler to the steam cylinder and the amount of steam delivered from the steam cylinder to the air-conditioning unit; the connecting pipe section from the steam cylinder 5 to each air-conditioning unit 1, the connecting pipe section from the water distributor 6 to each air-conditioning unit 1, and the water outlet side of the water collector 7 are both provided with temperature sensors 11 for measuring the steam temperature delivered from the steam cylinder to the air-conditioning terminal unit, the water inlet temperature delivered from the water distributor to the air-conditioning unit, and the water outlet temperature of the water collector, respectively.
[0035] In one specific embodiment: see Figure 1 As shown, electric switch valves 12 are provided on the connecting pipe sections between the refrigeration unit 3 and the water distributor 6 and the water collector 7, and on the connecting pipe sections between the ground source heat pump unit 4 and the water distributor 6 and the water collector 7 to control the start and stop of the refrigeration unit and the ground source heat pump unit; an electric regulating valve 13 is provided on the connecting pipe section between the water distributor 6 and each air-conditioning unit 1, and the electric regulating valve is used to adjust the switching ratio from the water distributor to the air-conditioning unit to control the flow rate; a stop valve 14 is provided on the suction side of the refrigeration unit 3 and the ground source heat pump unit 4.
[0036] In one specific embodiment: see Figure 2 As shown, the air conditioning unit 1 includes a mixed air section 1-1, a filter section 1-2, a surface cooling section 1-3, a steam heating section 1-4, a steam humidification section 1-5, a high-pressure micro-mist humidification section 1-6 and a blower section 1-7; the surface cooler in the surface cooling section 1-3 is set as a hot water radiator to realize the dual-mode operation of the air conditioning unit; the steam heating section 1-4 and the steam humidification section 1-5 are connected to the steam pipeline output by the sub-cylinder 5 and the steam passes through the air conditioning unit 1 to heat and humidify the room; the high-pressure micro-mist humidification section 1-6 humidifies the room through high-pressure micro-mist. For the humidification needs of each room in the factory, air conditioning micro-mist humidification is preferred, and boiler steam is used for supplementary humidification when it is insufficient.
[0037] The use principle of the utility model: In most industrial plants, according to the different types of operations in each room, some rooms need to maintain a 24-hour constant temperature and humidity process environment. The temperature and humidity requirements of the entire plant need to be met during the production period, and only the temperature and humidity of some rooms with constant temperature and humidity requirements need to be met during the non-production period. Therefore, the heat requirements of the plant during the production period and the non-production period are different, and the heat source of air conditioning heating will also be different. When the plant is in the production period, the heat and humidity requirements of the entire plant are relatively large. In order to meet the humidity requirements of each room, a humidification method with air conditioning micro-mist humidification as the main and boiler steam humidification as the auxiliary is adopted. In order to meet the temperature requirements of each room, the ground source heat pump is used as the heat source of the air conditioning unit in the transition season and winter conditions to heat the room; in the summer conditions, the refrigeration host of the refrigeration station is used for cooling. If some rooms have heating requirements, boiler steam is used as the heat source for heating. When the plant is in the non-production period, only the rooms with constant temperature and humidity requirements need to be met, so its heat and humidity requirements are relatively small. In order to meet its humidity requirements, a humidification method with air conditioning micro-mist humidification as the main and boiler residual pressure steam humidification as the auxiliary is adopted. To meet its temperature requirements, ground source heat pumps are used as the heat source of air-conditioning units in transition seasons and winter conditions; ground source heat pumps are used as the cold source of air-conditioning units in summer conditions.
[0038] In the summer cooling condition, the cooling capacity of the plant during the production period is supplied by the refrigeration unit. At this time, the electric switch valve from the refrigeration unit to the water distributor and water collector is opened, and the electric switch valve from the ground source heat pump unit to the water distributor and water collector is closed. The refrigeration unit transports the cooled fluid medium to the surface cooling section of the air conditioning unit through the water distributor. The return water of the air conditioning unit after heat exchange returns to the water collector and circulates back to the refrigeration unit through the chilled water pump. When the temperature of an individual room is lower than the standard temperature specified for the room, the boiler steam is used to heat the room, and the boiler steam is transported to the steam heating section of the air conditioning unit through the steam distributor to heat the room. During the non-production period, the cooling load in the plant is reduced, and the refrigeration unit stops running. At this time, the electric switch valve connected to the refrigeration unit is closed, and the electric switch valve connected to the ground source heat pump unit is opened. The ground source heat pump unit transports the cooled fluid medium to the surface cooling section of the air conditioning unit through the water distributor. The return water of the air conditioning after heat exchange is transported to the water collector and circulates back to the ground source heat pump unit through the chilled water pump.
[0039] In winter and transition seasons, ground source heat pump units are used as heat sources for air conditioning units. At this time, the electric switch valve connected to the refrigeration unit is closed, and the electric switch valve connected to the ground source heat pump unit is opened. The ground source heat pump unit transfers the hot water after heat exchange to the air conditioning units in different rooms through the water distributor, and heats the indoor space through the hot water radiator in the air conditioning unit. After heat exchange, the return water of the air conditioning unit is transported to the water collector and circulated through the chilled water pump before returning to the ground source heat pump unit.
[0040] When the humidity in different rooms is lower than the specified standard humidity, air conditioning micro-mist is used to humidify the room. If the air conditioning micro-mist humidification is not enough to meet the room humidity demand, boiler steam humidification is used. During the non-production period, the residual pressure steam stored in the sub-cylinder passes through the soft-seal pneumatic regulating valve to accurately control the steam flow and reduce the pressure of the steam output by the sub-cylinder, and then transport it to the steam humidification section of the air-conditioning terminal unit to humidify the room.
[0041] Preferably: energy supply equipment such as boilers, ground source heat pump units, air conditioning units and chilled water pumps can be adjusted and changed in quantity according to actual project needs.
[0042] Preferably, multiple valves and parameter measuring devices can be provided according to the specific requirements of the actual project.
[0043] In summary, all rooms in industrial plants need to be air-conditioned during the production period. Regardless of the operating conditions of each room, humidity control shall be based on micro-mist humidification. When there is a demand for steam at the end of the air-conditioning unit, steam from the boiler shall be used for replenishment. During the non-production period, the boiler stops running, mainly to meet the requirements of 24-hour constant temperature and humidity in rooms. Under all operating conditions, humidity control shall be based on micro-mist humidification. When there is a demand for steam at the end of the air-conditioning unit, the residual pressure steam from the boiler shall be accurately replenished through a soft-sealed pneumatic regulating valve. During the transition season and winter, the temperature control of each workshop is heated by ground-source heat pumps. During the summer production period, each workshop uses a refrigeration station for cooling. If there is a demand for heating in individual rooms, boiler steam is used for heating; ground-source heat pumps are used for cooling during the non-production period.
[0044] The utility model stops the operation of the boiler during the non-production period to reduce gas consumption, and at the same time fully utilizes the excess pressure steam for indoor heating and humidification, increases the utilization rate of the boiler excess pressure steam, reduces the consumption of high-quality steam, and adds a ground source heat pump for heating, which greatly improves the heating flexibility of the heating system and reduces primary energy consumption.
[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.
[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A multi-heat source combined heating energy-saving device, characterized in that: include: A boiler (2), wherein a steam outlet of the boiler (2) is connected to an air inlet of each air-conditioning unit (1) via a steam cylinder (5), and the steam of the boiler (2) is transported to each air-conditioning unit (1) via the steam cylinder (5) to provide steam heating or steam humidification to the room; A refrigeration unit (3), wherein the water outlet of the refrigeration unit (3) is connected to the water inlet of each air-conditioning unit (1) through a water distributor (6), the water return port of each air-conditioning unit (1) is connected to the water inlet of a water collector (7), and the water outlet of the water collector (7) is connected to the suction port of the refrigeration unit (3); the refrigeration unit (3) transfers the cooled fluid medium to each air-conditioning unit (1) through the water distributor (6) for heat exchange, and the return water of each air-conditioning unit (1) after heat exchange returns to the water collector (7) and is then transferred to the refrigeration unit (3); A ground source heat pump unit (4), wherein the water outlet of the ground source heat pump unit (4) is connected to the water inlet of each air conditioning unit (1) through a water distributor (6), and the suction port of the ground source heat pump unit (4) is connected to the water outlet of a water collector (7); the ground source heat pump unit (4) transfers the heated or cooled fluid medium to each air conditioning unit (1) through the water distributor (6) for heat exchange, thereby providing heating or cooling indoors; after the heat exchange, the return water of each air conditioning unit (1) returns to the water collector (7) and is then transported back to the ground source heat pump unit (4).
2. A multi-heat source combined heating energy-saving device according to claim 1, characterized in that: A chilled water pump (8) is provided on the water outlet side of the water collector (7), and the chilled water pump (8) is connected to the suction side of the ground source heat pump unit (4) and the refrigeration unit (3). The chilled water pump (8) transports the return water of each air-conditioning unit (1) after heat exchange to the water collector (7) to circulate and supply the return water to the ground source heat pump unit (4) and the refrigeration unit (3).
3. The multi-heat source combined heating energy-saving device according to claim 1 is characterized in that: A soft-sealed pneumatic regulating valve (9) is provided on the steam supply pipe network from the steam cylinder (5) to each air-conditioning unit (1).
4. The multi-heat source combined heating energy-saving device according to claim 1 is characterized in that: The outlet side of the boiler (2) and the inlet side of each air-conditioning unit (1) are both provided with an automatic flow meter (10); the connecting pipe section from the steam cylinder (5) to each air-conditioning unit (1), the connecting pipe section from the water distributor (6) to each air-conditioning unit (1), and the water outlet side of the water collector (7) are all provided with a temperature sensor (11).
5. The multi-heat source combined heating energy-saving device according to claim 1 is characterized in that: Electric switch valves (12) are provided on the connecting pipe sections between the refrigeration unit (3) and the water distributor (6) and the water collector (7), and on the connecting pipe sections between the ground source heat pump unit (4) and the water distributor (6) and the water collector (7); electric regulating valves (13) are provided on the connecting pipe sections between the water distributor (6) and each air conditioning unit (1); and stop valves (14) are provided on the suction inlet sides of the refrigeration unit (3) and the ground source heat pump unit (4).
6. The multi-heat source combined heating energy-saving device according to claim 1, characterized in that: The air conditioning unit (1) comprises an air mixing section (1-1), a filtering section (1-2), a surface cooling section (1-3), a steam heating section (1-4), a steam humidifying section (1-5), a high-pressure fine mist humidifying section (1-6) and a blower section (1-7); the surface cooler in the surface cooling section (1-3) is configured as a hot water radiator; the steam heating section (1-4) and the steam humidifying section (1-5) are both connected to the steam pipeline output by the steam cylinder (5) and allow the steam to pass through the air conditioning unit (1) to heat and humidify the room; the high-pressure fine mist humidifying section (1-6) humidifies the room through high-pressure fine mist.