CN204830570U - A direct refrigeration system for heat pump - Google Patents

Abstract

The utility model relates to a direct cooling system for heat pumps, which comprises cooling water pipes connected in parallel to the side of the original heat pump unit. The terminal refrigeration system includes water separators, water collectors, water inlet and outlet pipes, inlet and outlet valves, fan coils, and temperature controllers. There are buried pipes connected in parallel, the water inlets of the buried pipes are connected with the heat exchange return pipes, the water outlets of the buried pipes are connected with the heat exchange outlet pipes, and the heat exchange outlet pipes are divided into two paths, one is connected with the cooling water pipe, and the other is It is connected with the heat pump unit, the outlet pipeline of the refrigeration system at the end of the building is connected with the water inlet of the circulating water pump group, and the water outlet of the circulating water pump group is connected with the aforementioned heat exchange return pipe. It only needs to turn on the circulating water pump group to maintain water circulation, which can ensure the cooling effect of the building.

Description

A direct cooling system for heat pump

technical field

The utility model relates to a direct refrigeration system for a heat pump.

Background technique

At present, with the in-depth implementation of my country's energy-saving and emission-reduction policies and the development of building energy-saving technologies, heat pump units, as a clean and environmentally friendly renewable energy utilization technology, have achieved rapid development and large-scale application. Factors such as different geological conditions and climatic conditions make the individual design of the heat pump system also develop and progress. When the heat pump unit is working, the heating capacity and input power vary with the ambient temperature, and the heating capacity gradually decreases as the ambient temperature decreases. When the temperature is lower in spring or autumn, if the heat pump unit is used, it will cause a certain amount of waste of electric energy.

Contents of the invention

The purpose of this utility model is to propose a direct refrigeration system for heat pumps that uses shallow soil as a cold source directly and provides refrigeration for buildings in transitional seasons when the refrigeration load of buildings is low.

The purpose of this utility model is achieved in this way: the direct refrigeration system used for heat pumps includes cooling water pipes connected in parallel to the side of the original heat pump unit, the outlet end of the cooling water pipes is connected to the refrigeration system at the end of the building, and the water inlet end is connected to the heat exchange system. The refrigeration system at the end of the building includes water separators, water collectors, water inlet and outlet pipes, inlet and outlet valves, fan coils, and temperature controllers. The heat exchange system includes heat exchange wells set up under the ground. Parallel underground pipes are installed in the hot well. The water inlets of the buried pipes are connected with the heat exchange return pipes, and the water outlets of the buried pipes are connected with the heat exchange outlet pipes. The heat exchange outlet pipes are divided into two paths, one of which is connected with the cooling water pipe , the other is connected with the heat pump unit, the water outlet pipeline of the refrigeration system at the end of the building is connected with the water inlet of the circulating water pump group, and the water outlet of the circulating water pump group is connected with the aforementioned heat exchange return pipe.

The utility model has the following advantages and beneficial effects: in this operation mode, only the circulating water pump unit needs to be turned on to maintain water circulation, and the heat pump unit does not need to be turned on, which not only ensures the cooling effect of the building, but also avoids the power consumption of turning on the heat pump unit. The effect of economic operation.

Description of drawings: the concrete structure of the present utility model is provided by following accompanying drawing and embodiment:

Figure 1 is a schematic diagram of the structure of a direct refrigeration system for a heat pump.

Legend: 1. Heat exchange return pipe, 2. Filter, 3. Heat exchange outlet pipe, 4. Cooling water pipe, 5. Refrigeration system at the end of the building, 6. Heat pump unit, 7. Refrigeration valve, 8. Outlet pipe, 9 , Circulating water pump group, 10, heat exchange well, 11, buried pipe.

Specific implementation methods: the utility model is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the utility model and actual conditions.

Embodiment: As shown in Figure 1, the direct refrigeration system used for heat pumps includes cooling water pipes 4 connected in parallel to the side of the original heat pump unit 6. The system is connected. The refrigeration system at the end of the building is an existing technology, which can adopt the structure of the current central air conditioner, including water separators, water collectors, water inlet and outlet pipelines 8, inlet and outlet valves, fan coils, temperature controllers, etc. The heat exchange system includes a heat exchange well 10 set up under the ground. Under the heat exchange well 10, parallel buried pipes 11 are arranged. The water inlets of the buried pipes 11 communicate with the heat exchange return pipe 1. The water outlet is connected with the heat exchange outlet pipe 3, and the heat exchange outlet pipe 3 is divided into two paths, one path is connected with the cooling water pipe 4, and the other path is connected with the heat pump unit 6. The water outlet pipeline 8 of the cooling system at the end of the building communicates with the water inlet of the circulating water pump group 9 , and the water outlet of the circulating water pump group 9 communicates with the aforementioned heat exchange return pipe 1 . Each of the aforementioned pipelines is filled with a heat exchange fluid medium.

A filter 2 is installed between the buried pipe 11 , the heat exchange return pipe 1 and the heat exchange outlet pipe 3 .

The water outlet pipeline 8 of the refrigeration system at the end of the building is connected with a constant pressure water supply pipe.

The pipelines on both sides of the heat pump unit 6 are provided with control valves, which are used to control whether the heat pump unit 6 is connected to the refrigeration system at the end of the building and the heat exchange system.

The cooling water pipe 4 is equipped with a cooling valve 7 . The valve is used to control whether the refrigeration system and the heat exchange system at the end of the building are connected or not through the cooling water pipe 4 .

When in use, the circulating water pump unit 9 drives the flow of the heat exchange fluid medium in each pipeline, and the control valves installed on the pipelines on both sides of the heat pump unit 6 are in a closed state. When the refrigeration valve 7 is opened, the circulating heat exchange fluid medium passes through the ground The tube 11 performs heat exchange with the outside world, reducing the temperature of the heat exchange medium to about 15°C. After being pressurized by the circulating water pump unit 9, it enters the refrigeration system at the end of the building, and is refrigerated by the heat exchange equipment of the refrigeration system at the end of the building, so that the indoor temperature reaches Refrigeration requires that the temperature of the circulating heat exchange fluid medium rises after passing through the end of the building, and directly enters the outlet pipe 8 without passing through the heat pump unit 6, and then enters the buried pipe 11 again to cool down, completing a cycle.

Apparently, the above description of the utility model is only an example for clearly illustrating the utility model, rather than limiting the implementation of the utility model. All obvious changes or variations derived from the technical solutions of the utility model are still within the scope of protection of the utility model.

Claims (5)

1. A direct refrigeration system for a heat pump, characterized in that: it includes a cooling water pipe connected in parallel to the side of the original heat pump unit, the outlet end of the cooling water pipe is connected to the refrigeration system at the end of the building, and the water inlet end is connected to the heat exchange system. The refrigeration system at the end of the building includes water separators, water collectors, water inlet and outlet pipes, inlet and outlet valves, fan coils, and temperature controllers. The heat exchange system includes heat exchange wells set up under the ground. Parallel underground pipes are installed in the hot well. The water inlets of the buried pipes are connected with the heat exchange return pipes, and the water outlets of the buried pipes are connected with the heat exchange outlet pipes. The heat exchange outlet pipes are divided into two paths, one of which is connected with the cooling water pipe , the other way is connected with the heat pump unit, the outlet pipeline of the refrigeration system at the end of the building is connected with the water inlet of the circulating water pump group, and the water outlet of the circulating water pump group is connected with the aforementioned heat exchange return pipe. 2 . The direct refrigeration system for heat pumps according to claim 1 , wherein a filter is installed between the buried pipe, the heat exchange return pipe, and the heat exchange outlet pipe. 3 . 3. The direct cooling system for heat pump according to claim 1, characterized in that: the water outlet pipeline of the cooling system at the end of the building is connected with a constant pressure water supply pipe. 4. The direct refrigeration system for heat pump according to claim 1, characterized in that: control valves are installed on the pipelines on both sides of the heat pump unit. 5. The direct cooling system for heat pumps according to claim 1, wherein a cooling valve is installed on the cooling water pipe.