CN115823672A - Cold and heat source system, central air-conditioning assembly and fresh air dehumidification assembly - Google Patents

Abstract

The invention provides a cold and heat source system, a central air-conditioning assembly and a fresh air dehumidification assembly. The cold and heat source system includes: a cooling tower, connected with a water inlet pipe and an outlet pipe; a chiller, including a chiller condenser and a chiller evaporator, the water outlet of the chiller condenser is connected to the water inlet pipe, and the water inlet is connected to the water outlet pipe; The water outlet of the chiller evaporator is connected to the main water supply pipe on the user side, and the water inlet is connected to the main water return pipe on the user side; the water outlet of the vacuum boiler is connected to the main water supply pipe on the user side, and the water inlet is connected to the main water return pipe on the user side; the main engine of the ground source heat pump , including the ground source host condenser and the ground source host evaporator. During the cooling season, the ground source side water supply pipeline and return water pipeline are connected to the ground source host condenser, and the user side water supply main pipe and return water main pipe are connected to the ground source main engine evaporator. ; In the heating season, the ground source side water supply pipeline and return water pipeline are connected to the ground source main engine evaporator, and the user side water supply main pipe and return water main pipe are connected to the ground source main engine condenser.

Description

Cold and heat source system, central air conditioning assembly and fresh air dehumidification assembly

technical field

The invention relates to the technical field of cold and heat sources, in particular to a cold and heat source system, a central air-conditioning assembly and a fresh air dehumidification assembly.

Background technique

At present, the high-efficiency computer room system on the market is mainly in the cooling scenario, using the chilled water host as the cooling source, and the cooling source system is mostly fully air-conditioned fresh air unit and fan coil equipment at the end, which cannot cover the terminal load demand during the seasonal changes throughout the year. Housing requires a lower level of comfort. Although some centralized cold and heat source computer rooms adopt advanced energy-saving technologies such as ground source heat pumps, they have not yet reached the energy efficiency standards of high-efficiency computer rooms, and there is still a large room for energy efficiency improvement.

Contents of the invention

In view of this, the present invention provides a cold and heat source system, a central air-conditioning assembly, and a fresh air dehumidification assembly. In the cooling season, use the synergy between the ground source heat pump host and the chiller host, and in the heating season, use the synergy between the ground source heat pump host and the vacuum boiler to improve the operating efficiency of the energy primary side system.

The cold and heat source system provided by the present invention includes:

User side water supply main;

The user side return water main pipe, on which the user side return water main pipe is installed with cold and hot water pumps;

A cooling tower, the cooling tower is connected with a water inlet pipe and a water outlet pipe;

The chiller includes a chiller condenser and a chiller evaporator, the water outlet of the chiller condenser communicates with the water inlet pipe through a cooling water supply pipeline, and the water inlet of the chiller condenser passes through a cooling water return pipe The water outlet pipe is connected with the water outlet pipe, and a cooling water pump is installed on the cooling water return pipe; the water outlet of the chilled water host evaporator is connected with the user side water supply main pipe through the chilled water supply pipeline, and the chilled water host evaporator The water inlet of the water inlet is connected with the user side return water main through the chilled water return pipeline, and a chilled water pump is installed on the chilled water return pipeline;

A vacuum boiler, the water outlet of the vacuum boiler communicates with the user-side water supply main pipe through the boiler-side water supply pipeline, the water inlet of the vacuum boiler communicates with the user-side return water main pipe through the boiler-side return water pipeline, and the A hot water pump is installed on the return water pipe on the boiler side;

Ground source heat pump main engine, including ground source main engine condenser and ground source main engine evaporator;

A water separator on the ground source side and a water collector on the ground source side, the water inlet of the water distributor on the ground source side is connected to a water supply pipeline on the ground source side, and the water outlet of the water collector on the ground source side is connected to a water supply pipeline on the ground source side A return water pipeline, a ground source water pump is installed on the ground source side return water pipeline, and multiple water outlets of the ground source side water separator pass through multiple closed-loop pipelines and multiple water outlets of the ground source side water collector respectively. The water inlet is connected,

In the cooling season, the water supply pipeline on the ground source side communicates with the water outlet of the condenser of the ground source main engine, and the return water pipeline on the ground source side communicates with the water inlet of the condenser of the ground source main engine; the ground source main engine The water outlet of the evaporator is connected with the user-side water supply main pipe, and the water inlet of the ground-source main engine evaporator is connected with the user-side return water main pipe;

In the heating season, the ground source side water supply pipeline communicates with the water outlet of the ground source host evaporator, and the ground source side return water pipeline communicates with the water inlet of the ground source host evaporator; the ground source The water outlet of the host condenser is connected with the user-side water supply main pipe, and the water inlet of the ground-source main engine condenser is connected with the user-side return water main pipe.

Optionally, the cold and heat source system also includes:

The first temperature sensor is used to monitor the ambient temperature;

A controller, the input end of the controller communicates with the output end of the first temperature sensor, the output end of the controller communicates with the control end of the ground source heat pump host, the control end of the chiller host, the The control end of the cooling tower, the control end of the ground source water pump, the control end of the chilled water pump, the control end of the cooling water pump, and the control end of the cold and hot water pump are connected by communication.

Optionally, the output terminal of the controller is communicatively connected with the control terminal of the vacuum boiler and the control terminal of the hot water pump.

Optionally, the cold and heat source system also includes:

The first water supply pipeline connects the water outlet of the ground source main engine condenser with the user-side water supply main pipe, and a first water supply valve is installed on it;

The first return water pipeline is connected to the water inlet of the ground source main engine condenser and the user side return water main pipe, and a first return water valve is installed on it;

The second water supply pipeline connects the water outlet of the evaporator of the ground source main engine and the water supply main pipe on the user side, and a second water supply valve is installed on it;

The second return water pipeline is connected to the water inlet of the ground source main engine evaporator and the user side return water main pipe, and a second return water valve is installed on it;

The third water supply pipeline is connected with the water outlet of the ground source host condenser and the ground source side water supply pipeline, and a third water supply valve is installed on it;

The third return water pipeline is connected with the water inlet of the ground source host condenser and the ground source side return water pipeline, and a third return water valve is installed on it;

The fourth water supply pipeline is connected with the water outlet of the ground source host evaporator and the ground source side water supply pipeline, and a fourth water supply valve is installed on it;

The fourth return water pipeline is connected with the water inlet of the ground source host evaporator and the ground source side return water pipeline, and a fourth return water valve is installed on it.

Optionally, the user-side water supply main pipe is connected to multiple water supply branch pipes; the user-side return water main pipe is connected to multiple return water branch pipes.

Optionally, each of the return water branch pipes is equipped with a second temperature sensor and a dynamic flow regulating balance valve; the output end of each second temperature sensor is connected to the input end of the controller in communication, and each The control terminals of one of the dynamic flow regulating balance valves are all communicatively connected with the output terminals of the controller.

Optionally, there are multiple cooling towers, the inlet pipes of each cooling tower communicate with the cooling water supply pipeline, and the outlet pipes of each cooling tower communicate with the cooling water supply pipeline. The cooling water return pipe is connected.

Optionally, an energy meter is installed on the user-side water supply main pipe; an electric valve is installed on each of the water inlet pipes; the output end of the energy meter is connected to the input end of the controller in communication, and each The control ends of the electric valves are all communicated with the output ends of the controller.

The present invention also provides a central air-conditioning assembly, including a panel replacement unit and a capillary radiation system connected to the panel replacement unit, and also includes the cold and heat source system described in any one of the above, and the user of the cold and heat source system The side water supply main pipe is connected with the water inlet of the plate replacement unit, and the user side return water main pipe of the cold and heat source system is connected with the water outlet of the plate replacement unit.

The present invention also provides a fresh air dehumidification assembly, including a fresh air unit, and also includes the cold and heat source system described in any one of the above, the user-side water supply main pipe and the user-side return water main pipe of the cold and heat source system are respectively connected to the Fresh air unit connection.

The above technical solutions provided by the present invention, compared with the prior art, at least have the following beneficial effects:

Using the cold and heat source system, central air-conditioning assembly and fresh air dehumidification assembly of the present invention, in the cooling season, with the help of the cooperation between the ground source heat pump host and the chiller host, in the heating season, with the help of the ground source heat pump host and the vacuum boiler. Coordination can improve the operating efficiency of the energy primary side system and reduce operating costs.

Description of drawings

Fig. 1 is a schematic diagram of a cold and heat source system according to an embodiment of the present invention.

Reference signs:

1: User side water supply main; 2: User side return water main; 3: Cooling tower; 4: Chiller; 41: Chiller condenser; 42: Chiller evaporator; 5: Vacuum boiler; 6: Ground source heat pump host ;61: condenser of ground source main engine; 62: evaporator of ground source main engine; 7: water separator on ground source side; 8: water collector on ground source side; 9: hot and cold water pump; 10: cooling water supply pipeline; 11 : Cooling water return pipeline; 12: Cooling water pump; 13: Chilled water supply pipeline; 14: Chilled water return pipeline; 15: Chilled water pump; 16: Boiler side water supply pipeline; 17: Boiler side return water pipeline; 18 : hot water pump; 19: ground source side water supply pipeline; 20: ground source side return water pipeline; 21: ground source water pump; 22: closed loop pipeline; 23: first water supply pipeline; 231: first water supply valve; 24: the first water return pipeline; 241: the first water return valve; 25: the second water supply pipeline; 251: the second water supply valve; 26: the second water return pipeline; 261: the second water return valve; 27: the second water supply pipeline Three water supply pipelines; 271: third water supply valve; 28: third water return pipeline; 281: third water return valve; 29: fourth water supply pipeline; 291: fourth water supply valve; 30: fourth water return pipeline ; 301: the fourth return water valve; 31: water supply branch pipe; 32: return water branch pipe; 33: plate replacement unit; 34: fresh air unit.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the simplified description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation or a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions.

Fig. 1 is a schematic diagram of a cold and heat source system according to an embodiment of the present invention. As shown in Figure 1, the cold and heat source system includes a user-side water supply main pipe 1, a user-side return water main pipe 2, a cooling tower 3, a water chiller 4, a vacuum boiler 5, a ground source heat pump main machine 6, and a water separator on the ground source side 7. Ground source side water collector 8.

A cold and hot water pump 9 is installed on the user side return water main pipe 2; the cooling tower 3 is connected with a water inlet pipe (not shown) and a water outlet pipe (not shown); the chiller 4 includes a chiller condenser 41 and the chiller evaporator 42, the water outlet of the chiller condenser 41 communicates with the water inlet pipe through the cooling water supply pipeline 10, and the water inlet of the chiller condenser 41 communicates with the water inlet through the cooling water return pipeline 11 The water outlet pipe is connected, and a cooling water pump 12 is installed on the cooling water return pipeline 11; the water outlet of the chilled water host evaporator 42 is communicated with the user-side water supply main pipe 1 through a chilled water supply pipeline 13, and the cooling water The water inlet of the main machine evaporator 42 communicates with the user side return water main pipe 2 through the chilled water return pipeline 14, and the chilled water pump 15 is installed on the chilled water return pipeline 14; the water outlet of the vacuum boiler 5 passes through the boiler The side water supply pipeline 16 communicates with the user-side water supply main pipe 1, and the water inlet of the vacuum boiler 5 communicates with the user-side return water main pipe 2 through the boiler-side return water pipeline 17. A hot water pump 18 is installed; the ground source heat pump host 6 includes a ground source host condenser 61 and a ground source host evaporator 62; the water inlet of the ground source side water separator 7 is connected with a ground source side water supply pipeline 19 , the water outlet of the ground source side water collector 8 is connected with a ground source side return water pipeline 20, and a ground source water pump 21 is installed on the ground source side water return pipeline 20, and the ground source side water separator 7 The multiple water outlets communicate with the multiple water inlets of the ground source side water collector 8 through multiple closed-loop pipelines 22 respectively.

In the cooling season, the ground source side water supply pipeline 19 communicates with the water outlet of the ground source host condenser 61, and the ground source side return water pipeline 20 communicates with the water inlet of the ground source host condenser 61; The water outlet of the ground source main machine evaporator 62 is connected with the user side water supply main pipe 1, and the water inlet of the ground source main machine evaporator 62 is connected with the user side return water main pipe 2; in the heating season, the ground source The side water supply pipeline 19 communicates with the water outlet of the ground source main machine evaporator 62, and the ground source side return water pipeline 20 communicates with the water inlet of the ground source main machine evaporator 62; the ground source main machine condenser 61 The water outlet is connected with the user-side water supply main pipe 1, and the water inlet of the ground-source main engine condenser 61 is connected with the user-side return water main pipe 2.

The direction indicated by the arrow in Figure 1 is the flow direction of the fluid medium in the pipeline. When the high temperature in summer requires cooling, the ground source side water supply pipeline 19 is connected with the water outlet of the ground source main engine condenser 61, and the ground source side return water pipeline 20 is connected with the water inlet of the ground source main engine condenser 61. Communication; the water outlet of the ground source host evaporator 62 communicates with the user-side water supply main pipe 1 , and the water inlet of the ground source host machine evaporator 62 communicates with the user-side return water main pipe 2 . If the outdoor wet bulb temperature is lower than or equal to the first set temperature, only the main unit 6 of the ground source heat pump is activated. The fluid medium flows through the ground source host evaporator 62, and is absorbed by the ground source host evaporator 62, so that the temperature of the fluid medium decreases, and the cooled fluid medium flows through the user side water supply main pipe 1 to the user side , to provide a cold source for the user side, and the fluid medium after heat exchange with the user side flows to the ground source host evaporator 62 through the user side return water main pipe 2, and circulates accordingly; in the ground source water pump 21 Under the driving action of the ground source side water collector 8, the fluid medium in the ground source side water collector 8 flows through the ground source main machine condenser 61 through the ground source side return water pipeline 20, and the ground source main machine condenser 61 dissipates heat, so that The fluid medium is heated up, and the heated fluid medium flows through the ground source side water supply pipeline 19 to the ground source side water separator 7, and then flows through the buried underground water tank connected with the ground source side water separator 7. The plurality of closed-loop pipelines 22 exchange heat with the underground environment in the closed-loop pipelines 22, reduce the temperature of the fluid medium, and then return to the water collector 8 on the ground source side, and then return to the water collector 8 through the ground source side. The water pipeline 20 flows to the ground source host condenser 61, and circulates accordingly to continuously provide cold source for the user side.

If the outdoor wet-bulb temperature is higher than the first set temperature, while the ground source heat pump main unit 6 is activated, the chilled water main unit 4 is started as an auxiliary cooling source. At this time, under the drive of the chilled water pump 15, A part of the fluid medium in the user-side return water main pipe 2 flows through the chilled water main evaporator 42 through the chilled water return pipeline 15, and is absorbed by the chilled water main evaporator 42, so that the temperature of the fluid medium decreases, And flow to the user side through the chilled water supply pipeline 13 and the user-side water supply main pipe 1 to provide a cold source for the user side, and the fluid medium after heat exchange with the user side passes through the user-side return water main pipe 2 Flow to the chilled water host evaporator 42, and circulate accordingly; under the drive of the cooling water pump 12, the fluid medium in the cooling water return line 11 flows through the chilled water host condenser 41, and the chilled water The host condenser 41 dissipates heat to heat up the fluid medium, and the heated fluid medium flows to the cooling tower 3 through the cooling water supply pipeline 10, and then cools down under the action of the cooling tower 3, and the cooled fluid medium passes through The cooling water return line 11 flows to the chiller condenser 41 and circulates accordingly to continuously provide cooling source for the user side.

When heating is required at low temperature in winter, the ground source side water supply pipeline 19 is connected to the water outlet of the ground source main engine evaporator 62, and the ground source side return water pipeline 20 is connected to the inlet of the ground source main engine evaporator 62. The water port is connected; the water outlet of the ground source main engine condenser 61 is connected with the user side water supply main pipe 1, and the water inlet of the ground source main machine condenser 61 is connected with the user side return water main pipe 2. If the outdoor wet bulb temperature is higher than or equal to the second set temperature (the second set temperature is lower than the first set temperature), only the ground source heat pump host 6 is enabled, and at this time, the hot and cold water pump 9 Under the driving action of the user-side return water main pipe 2, the fluid medium in the user-side return water main pipe 2 flows through the ground source main engine condenser 61, and the ground source main engine condenser 61 dissipates heat to heat up the fluid medium, and the heated fluid medium passes through the The user-side water supply main pipe 1 flows to the user side to provide a heat source for the user side, and the fluid medium after heat exchange with the user side flows to the ground source host condenser 61 through the user-side return water main pipe 2, and accordingly circulation; driven by the ground source water pump 21, the fluid medium in the ground source side water collector 8 flows through the ground source main machine evaporator 62 through the ground source side return water pipeline 20, the The ground source host evaporator 62 absorbs heat to cool down the fluid medium, and the cooled fluid medium flows through the ground source side water supply pipeline 19 to the ground source side water separator 7, and then flows through the ground source side. The plurality of closed-loop pipelines 22 buried in the ground communicated with the water separator 7 exchange heat with the underground environment in the closed-loop pipelines 22 to heat up the fluid medium, and then return to the ground source side water collector 8. Then flow through the ground-source side return water pipeline 20 to the ground-source main machine evaporator 62, and circulate accordingly to continuously provide heat source for the user side.

If the outdoor wet bulb temperature is lower than the second set temperature, the ground source heat pump host 6 is activated, and the vacuum boiler 5 is activated as an auxiliary heat source. At this time, under the driving action of the hot water pump 18, A part of the fluid medium in the user-side return water main pipe 2 flows through the boiler-side return water pipe 17 through the vacuum boiler 5, and after being heated by the vacuum boiler 5, flows through the user-side water supply main pipe 1 to the user side, providing a heat source for the user side, and the fluid medium after heat exchange with the user side flows to the vacuum boiler 5 through the user-side return water main pipe 2 and the boiler-side return water pipeline 17, and circulates in this way continuously. Provide heat source for user side.

Using the cold and heat source system of the present invention, in the cooling season, by means of the cooperation between the ground source heat pump host 6 and the chilled water host 4, in the heating season, by means of the connection between the ground source heat pump host 6 and the vacuum boiler 5 The synergy among them can improve the operating efficiency of the energy primary side system and reduce operating costs.

In this embodiment, the cold and heat source system sends cold and hot media to the temperature and humidity independent control system ending with the capillary radiation system + fresh air dehumidification system. The main unit 6 of the ground source heat pump uses a high-efficiency main unit, the COP of the cooling and heating season is > 6.2, and the water resistance of the two devices is < 40kpa. In the cooling season, the ground-source host condenser 61 exchanges heat with the ground-source side heat transfer medium, and the supply and return water temperature is 35/30°C. The ground-source host evaporator 62 provides 6/16°C low-temperature cold water to the end of the load. In this embodiment, the first set temperature is selected as 28°C, and when the outdoor wet bulb temperature is higher than 28°C, the chiller 4 is used as an auxiliary cooling source, and the chiller evaporator 42 provides 6/16 ℃ low-temperature cold water, the main chiller condenser 41 is connected to the high-efficiency cooling tower 3, the supply and return water temperature is 35/30 ℃, and the approximation degree is about 3 ℃. In the heating season, the ground-source main engine evaporator 62 exchanges heat with the ground-source side heat transfer medium, and the supply and return water temperature is 5/10°C, and the ground-source main engine condenser 61 provides 40/33°C hot water to the load end. In this embodiment, the end side, that is, the user side, is mainly the single plate replacement equipment and fresh air dehumidification equipment. After the single plate replacement, the secondary side provides cooling and heating medium to the capillary radiation system, and the plate replacement and fresh air blower once Side water resistance < 40kpa, transmission and distribution system resistance < 200kpa, priority is given to using pipe diameters to adjust water resistance, and setting valves for comprehensive consideration. According to actual application conditions, the cooling tower 3, the chilled water host 4, the vacuum boiler 5 and the ground source heat pump host 6 can all be selected from commercially available models of any specifications that meet normal production conditions, and the first device The fixed temperature and the second set temperature can be adjusted.

In this embodiment, the ground source side return water pipeline 20, the cooling water return water pipeline 11, the chilled water return water pipeline 14 and the user side return water main pipe 2 are all connected with a water replenishment constant pressure device , the water supply and constant pressure device is a mature prior art, and will not be repeated here.

Optionally, the cold and heat source system further includes a first temperature sensor (not shown) and a controller (not shown). The first temperature sensor is used to monitor the ambient temperature; the input end of the controller communicates with the output end of the first temperature sensor, and the output end of the controller communicates with the control end of the ground source heat pump host 6 , the control terminal of the chiller 4, the control terminal of the cooling tower 3, the control terminal of the ground source water pump 21, the control terminal of the chilled water pump 15, the control terminal of the cooling water pump 12 and the cooling The control end of the hot water pump 9 is connected in communication. With this setting, the controller can automatically control the ground source heat pump host 6, the chilled water host 4, and the cooling tower 3 to start or stop running according to the ambient temperature data monitored by the first temperature sensor, so that according to the temperature Variation Using the ground source heat pump host 6 alone, or the combination of the ground source heat pump host 6 and the chiller 4 to provide cold sources for the user side can effectively improve the cooling operation efficiency of the energy primary side system.

The first temperature sensor monitors the ambient temperature data in real time, and transmits the ambient temperature data to the controller, and the controller pre-stores the cooling set temperature for starting the cooling mode of the ground source heat pump main unit 6, and the cooling setting temperature for starting the cooling mode of the ground source heat pump host 6. The first set temperature of the chiller 4 (the first set temperature is higher than the cooling set temperature), when the ambient temperature data is greater than or equal to the cooling set temperature, and less than or equal to the first set temperature, it indicates that the air temperature is not Very high, the controller only starts the ground source heat pump host 6, the ground source water pump 21 and the hot and cold water pump 9, and uses the cooling mode of the ground source heat pump host 6 to provide cold sources for the user side alone; When the ambient temperature data is greater than the first set temperature, it indicates that the air temperature is high, and the controller controls the ground source heat pump host 6, the chilled water host 4 and the cooling tower 3 to start simultaneously, and controls to turn on the ground The source water pump 21 , the hot and cold water pump 9 , the cooling water pump 12 and the chilled water pump 15 use the ground source heat pump host 6 and the chilled water host 4 to jointly provide cold sources for the user side. In this embodiment, the first set temperature is selected as 28° C., and both the cooling set temperature and the first set temperature can be adjusted according to actual application conditions. The controller controls the ground source heat pump host 6, the chilled water host 4, the cooling tower 3, the ground source water pump 21, the hot and cold water pump 9, the cooling water pump 12 and the The above-mentioned control logic for starting and stopping the chilled water pump 15 can be realized according to existing mature algorithms, and will not be repeated here.

Optionally, the output terminal of the controller is communicatively connected with the control terminal of the vacuum boiler 5 and the control terminal of the hot water pump 18 . With this setting, the controller can automatically control the start or stop operation of the ground source heat pump host 6 and the vacuum boiler 5 according to the ambient temperature data monitored by the first temperature sensor, so as to use the The ground source heat pump host 6, or the cooperation between the ground source heat pump host 6 and the vacuum boiler 5, provides a heat source for the user side, which can effectively improve the heating operation efficiency of the energy primary side system.

The first temperature sensor monitors the ambient temperature data in real time, and transmits the ambient temperature data to the controller, and the controller pre-stores the heating set temperature for starting the heating mode of the ground source heat pump host 6, and Start the second set temperature of the vacuum boiler 5 (the second set temperature is less than the heating set temperature), when the ambient temperature data is less than or equal to the heating set temperature, and greater than or equal to the second set temperature, It indicates that the air temperature is not very low, the controller only starts the ground source heat pump host 6, the ground source water pump 21 and the hot and cold water pump 9, and utilizes the heating mode of the ground source heat pump host 6 as the user side alone Provide a heat source; when the ambient temperature data is lower than the second set temperature, it indicates that the air temperature is low, and the controller controls the ground source heat pump host 6 and the vacuum boiler 5 to start simultaneously, and controls to turn on the ground source water pump 21 , The cold and hot water pump 9 and the hot water pump 18 use the ground source heat pump host 6 and the vacuum boiler 5 to jointly provide a heat source for the user side. According to the temperature feeling of the user side, both the heating set temperature and the second set temperature can be adjusted. The controller controls the control logic of starting and stopping the ground source heat pump main engine 6, the ground source water pump 21, the cold and hot water pump 9, the vacuum boiler 5 and the hot water water pump 18 according to the ambient temperature data, according to Existing mature algorithms can be implemented, and will not be repeated here.

Optionally, the cold and heat source system further includes a first water supply pipeline 23, a first return water pipeline 24, a second water supply pipeline 25, a second water return pipeline 26, a third water supply pipeline 27, a third return The water pipeline 28 , the fourth water supply pipeline 29 and the fourth water return pipeline 30 .

The first water supply pipeline 23 communicates with the water outlet of the ground source host condenser 61 and the user-side water supply main pipe 1, on which a first water supply valve 231 is installed; the first return water pipeline 24 communicates with the The water inlet of the ground source host condenser 61 and the user side return water main pipe 2 are installed with a first return water valve 241; the second water supply pipeline 25 is connected to the water outlet of the ground source host machine evaporator 62 and the user-side water supply main pipe 1, on which a second water supply valve 251 is installed; the second return water pipeline 26 communicates with the water inlet of the ground source main machine evaporator 62 and the user-side return water main pipe 2, which The second water return valve 261 is installed on it; the third water supply pipeline 27 communicates with the water outlet of the ground source host condenser 61 and the ground source side water supply pipeline 19, and a third water supply valve 271 is installed on it The third return water pipeline 28 communicates with the water inlet of the ground source host condenser 61 and the ground source side return water pipeline 20, on which a third return water valve 281 is installed; the fourth water supply pipeline 29 communicates with the water outlet of the ground source main engine evaporator 62 and the ground source side water supply pipeline 19, on which a fourth water supply valve 291 is installed; the fourth return water pipeline 30 communicates with the ground source main engine evaporator 62 and the ground source side return water pipeline 20, on which a fourth return water valve 301 is installed. This kind of setting utilizes the opening and closing of valves on different water supply and return water pipelines to realize switching between cooling and heating modes of the ground source heat pump host 6 .

In this embodiment, as shown in FIG. 1 , during cooling in summer, the second water supply valve 251 , the second water return valve 261 , the third water supply valve 271 and the third water return valve 281 are opened. , then the ground source side water supply pipeline 19 communicates with the water outlet of the ground source main engine condenser 61 through the third water supply pipeline 27, and the ground source side return water pipeline 20 passes through the third return water pipe The road 28 communicates with the water inlet of the ground source main machine condenser 61, the water outlet of the ground source main machine evaporator 62 communicates with the user side water supply main pipe 1 through the second water supply pipeline 25, and the ground source The water inlet of the host evaporator 62 communicates with the user side return water main pipe 2 through the second return water pipeline 26 to realize the cooling mode of the ground source heat pump host 6 .

When heating in winter, the first water supply valve 231, the first return water valve 241, the fourth water supply valve 291 and the fourth return water valve 301 are opened, and the ground source side water supply pipeline 19 The fourth water supply pipeline 29 communicates with the water outlet of the ground source main engine evaporator 62, and the ground source side return water pipeline 20 communicates with the ground source main engine evaporator 62 through the fourth return water pipeline 30. The water inlet of the ground source host condenser 61 communicates with the user-side water supply main pipe 1 through the first water supply pipeline 25, and the water inlet of the ground source host condenser 61 passes through the first water supply pipeline 25. A return water pipeline 24 communicates with the user-side return water main pipe 2 to realize the heating mode of the ground source heat pump host 6 .

Optionally, the user-side water supply main pipe 1 is connected to multiple water supply branch pipes 31 ; the user-side return water main pipe 2 is connected to multiple return water branch pipes 32 . With such an arrangement, one set of the cold and heat source system can provide cold and heat sources for multiple terminal systems.

In this embodiment, as shown in FIG. 1 , the user-side water supply main pipe 1 is connected to two of the water supply branch pipes 31 , and correspondingly, the user-side return water main pipe 2 is connected to two of the return water branch pipes 32 Each of the water supply branch pipes 31 and the corresponding return water branch pipes 32 can be individually connected to a building to provide cold and heat sources for fresh air dehumidification equipment or central air conditioners in the building. Different water supply branch pipes 31 and the The return water branch pipes 32 respectively provide cold and heat sources for different buildings. According to actual application conditions, the number of the water supply branch pipes 31 can be adjusted, and accordingly, the water return branch pipes 32 can be adjusted accordingly.

Optionally, a second temperature sensor (not shown) and a dynamic flow regulating balance valve (not shown) are installed on each of the return water branch pipes 32; the output end of each of the second temperature sensors is connected to The input end of the controller is connected in communication, and the control end of each dynamic flow regulating balance valve is connected in communication with the output end of the controller. With this arrangement, the controller can dynamically adjust the flow balance according to the return water temperature in each of the return water branch pipes 32 .

In this embodiment, each of the second temperature sensors monitors the return water temperature data in each of the corresponding return water branch pipes 32 in real time, and transmits the return water temperature data to the controller. The opening data of the dynamic flow adjustment balance valve corresponding to different return water temperature data are pre-stored, and the controller adjusts the corresponding dynamic flow adjustment balance according to the return water temperature data in each of the return water branch pipes 32. valve opening. The control logic of the controller to adjust the opening degree of the dynamic flow regulating balance valve according to the return water temperature data can be realized according to the existing mature algorithm, and will not be repeated here.

Optionally, there are multiple cooling towers 3, the inlet pipes of each cooling tower 3 communicate with the cooling water supply pipeline 10, and the outlet pipes of each cooling tower 3 All communicate with the cooling water return pipeline 11. This setting can further improve the operating efficiency of the energy primary side system.

In this embodiment, a plurality of cooling towers 3 are connected in parallel, and the fluid medium in the cooling water supply pipeline 10 enters each of the cooling towers 3 respectively, and then flows to the cooling water return pipeline 11 after cooling down. . According to actual application conditions, the specific number of cooling towers 3 can be adjusted.

Optionally, an energy meter (not shown) is installed on the user-side water supply main pipe 1; an electric valve is installed on each of the water inlet pipes; the output end of the energy meter is connected to the input end of the controller Communication connection, the control end of each electric valve is in communication connection with the output end of the controller. This setting can adjust the opening of the electric valve on the water inlet pipe of each cooling tower 3 in real time based on the load (heat dissipation) demand and the outdoor wet bulb temperature, and implement the optimal combination strategy of the cooling tower group.

In this embodiment, the energy meter monitors the flow data of the fluid medium in real time and transmits the flow data to the controller; the first temperature sensor monitors the ambient temperature data in real time and transmits the ambient temperature data to the A controller, the opening of the electric valve corresponding to different flow data and ambient temperature data is pre-stored in the controller, and according to the received flow data and the ambient temperature data, the controller controls each The opening degrees of the electric valves corresponding to the cooling towers 3 may be the same or different. The controller can also adjust the operating frequency of the fans in each cooling tower 3 according to the received flow data and the ambient temperature data. The control logic of the controller to control the opening degree of the electric valve and the operating frequency of the fan according to the flow data and the ambient temperature data can be realized according to the existing mature algorithm, and will not be repeated here.

The present invention also provides a central air-conditioning assembly, which includes a panel replacement unit 33 and a capillary radiation system connected to the panel replacement unit 33, and also includes the cold and heat source system described in any of the above-mentioned embodiments, the cold and heat source The user-side water supply main pipe 1 of the system communicates with the water inlet of the plate replacement unit 33 , and the user-side return water main pipe 2 of the cold and heat source system communicates with the water outlet of the plate replacement unit 33 .

After the plate replacement unit 33 exchanges heat with the user-side water supply main pipe 1 and the user-side return water main pipe 2, the secondary side provides cooling and heating medium to the capillary radiation system.

Using the central air-conditioning assembly of the present invention, in the cooling season, by means of the cooperation between the ground source heat pump main unit 6 and the chilled water main unit 4, in the heating season, by means of the connection between the ground source heat pump main unit 6 and the vacuum boiler 5 The synergy among them can improve the operating efficiency of the energy primary side system and reduce operating costs.

The present invention also provides a fresh air dehumidification assembly, including a fresh air unit 34, and the cold and heat source system described in any one of the above embodiments, the user-side water supply main pipe 1 and the user-side return water main pipe 2 of the cold and heat source system They are connected to the fresh air units 34 respectively.

Using the fresh air dehumidification assembly of the present invention, in the cooling season, by means of the cooperation between the ground source heat pump main unit 6 and the chilled water main unit 4, in the heating season, by means of the connection between the ground source heat pump main unit 6 and the vacuum boiler 5 The synergy among them can improve the operating efficiency of the energy primary side system and reduce operating costs.

In this embodiment, the user-side water supply main pipe 1 and the user-side return water main pipe 2 respectively provide cold and heat sources for the fresh air unit 34 and the plate replacement unit 33 by means of branch pipelines.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A cold heat source system, comprising:

a user side water supply main pipe;

the system comprises a user side water return main pipe, a cold and hot water pump and a water storage tank, wherein the user side water return main pipe is provided with the cold and hot water pump;

the cooling tower is connected with a water inlet pipe and a water outlet pipe;

the water inlet of the condenser of the cold water host machine is communicated with the water outlet pipe through a cooling water return pipeline, and a cooling water pump is arranged on the cooling water return pipeline; the water outlet of the cold water host evaporator is communicated with the user side water supply main pipe through a chilled water supply pipeline, the water inlet of the cold water host evaporator is communicated with the user side water return main pipe through a chilled water return pipeline, and a chilled water pump is installed on the chilled water return pipeline;

a water outlet of the vacuum boiler is communicated with the user side water supply main pipe through a boiler side water supply pipeline, a water inlet of the vacuum boiler is communicated with the user side water return main pipe through a boiler side water return pipeline, and a hot water pump is installed on the boiler side water return pipeline;

the ground source heat pump host comprises a ground source host condenser and a ground source host evaporator;

the water supply system comprises a ground source side water separator and a ground source side water collector, wherein a water inlet of the ground source side water separator is connected with a ground source side water supply pipeline, a water outlet of the ground source side water collector is connected with a ground source side water return pipeline, a ground source water pump is installed on the ground source side water return pipeline, and a plurality of water outlets of the ground source side water separator are respectively communicated with a plurality of water inlets of the ground source side water collector through a plurality of closed-loop pipelines;

in a refrigeration season, the water supply pipeline at the ground source side is communicated with a water outlet of the condenser of the ground source host machine, and the water return pipeline at the ground source side is communicated with a water inlet of the condenser of the ground source host machine; the water outlet of the ground source host evaporator is communicated with the user side water supply main pipe, and the water inlet of the ground source host evaporator is communicated with the user side water return main pipe;

in the heating season, the water supply pipeline at the ground source side is communicated with the water outlet of the evaporator of the ground source host machine, and the water return pipeline at the ground source side is communicated with the water inlet of the evaporator of the ground source host machine; the water outlet of the ground source host condenser is communicated with the user side water supply main pipe, and the water inlet of the ground source host condenser is communicated with the user side water return main pipe.

2. The cold heat source system according to claim 1, further comprising:

a first temperature sensor for monitoring an ambient temperature;

the input end of the controller is in communication connection with the output end of the first temperature sensor, and the output end of the controller is in communication connection with the control end of the ground source heat pump host, the control end of the cold water host, the control end of the cooling tower, the control end of the ground source water pump, the control end of the chilled water pump, the control end of the cooling water pump and the control end of the cold and hot water pump.

3. The cold heat source system according to claim 2, wherein:

and the output end of the controller is in communication connection with the control end of the vacuum boiler and the control end of the hot water pump.

4. The cold heat source system according to any one of claims 1-3, further comprising:

the first water supply pipeline is communicated with a water outlet of the ground source host condenser and the user side water supply main pipe, and a first water supply valve is mounted on the first water supply pipeline;

the first water return pipeline is communicated with a water inlet of the ground source host condenser and the user side water return main pipe, and a first water return valve is mounted on the first water return pipeline;

the second water supply pipeline is communicated with the water outlet of the ground source host evaporator and the user side water supply main pipe, and a second water supply valve is mounted on the second water supply pipeline;

the second water return pipeline is communicated with the water inlet of the ground source host evaporator and the user side water return main pipe, and a second water return valve is mounted on the second water return pipeline;

the third water supply pipeline is communicated with the water outlet of the condenser of the ground source host machine and the ground source side water supply pipeline, and is provided with a third water supply valve;

the third water return pipeline is communicated with the water inlet of the condenser of the ground source host machine and the ground source side water return pipeline, and is provided with a third water return valve;

the fourth water supply pipeline is communicated with a water outlet of the ground source host evaporator and the ground source side water supply pipeline, and a fourth water supply valve is installed on the fourth water supply pipeline;

and the fourth water return pipeline is communicated with the water inlet of the ground source host evaporator and the ground source side water return pipeline, and is provided with a fourth water return valve.

5. The cold heat source system according to claim 2 or 3, wherein:

the user side water supply main pipe is connected with a plurality of water supply branch pipes;

and the user side water return main pipe is connected with a plurality of water return branch pipes.

6. The cold heat source system according to claim 5, wherein:

each backwater branch pipe is provided with a second temperature sensor and a dynamic flow regulating balance valve;

the output end of each second temperature sensor is in communication connection with the input end of the controller, and the control end of each dynamic flow regulating balance valve is in communication connection with the output end of the controller.

7. The cold heat source system according to claim 2 or 3, wherein:

the cooling tower is provided with a plurality of, each the cooling tower the inlet tube all with cooling water supply pipe intercommunication, each the cooling tower the outlet pipe all with cooling water return water pipeline intercommunication.

8. The cold heat source system according to claim 7, wherein:

an energy meter is arranged on the user side water supply main pipe;

each water inlet pipe is provided with an electric valve;

the output end of the energy meter is in communication connection with the input end of the controller, and the control end of each electric valve is in communication connection with the output end of the controller.

9. A central air-conditioning assembly, comprising a plate exchanger unit and a capillary radiation system connected with the plate exchanger unit, characterized by further comprising the cold and heat source system of any one of claims 1 to 8, wherein a user side water supply main pipe of the cold and heat source system is communicated with a water inlet of the plate exchanger unit, and a user side water return main pipe of the cold and heat source system is communicated with a water outlet of the plate exchanger unit.

10. A fresh air dehumidification assembly comprises a fresh air unit and is characterized by further comprising the cold and heat source system as claimed in any one of claims 1 to 8, wherein a user side water supply main pipe and a user side water return main pipe of the cold and heat source system are respectively connected with the fresh air unit.

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