CN204612246U - Multi-source combined heat-pump heating system - Google Patents

Abstract

A kind ofly can reduce the multi-source combined heat-pump heating system that heating system cost of investment has again higher energy efficiency ratio.Multi-source combined heat-pump system adopts the source pump of being furnished with double evaporators, and according to outdoor temperature, the unlatching of conservative control air-source evaporimeter and water source evaporimeter, water source vaporizer side can connect different heat sources, also can connect various heating sources simultaneously.Select thermal source flexibly, double evaporators with the use of, solve the deficiency of conventional heat pump self, alleviate the pollution of environment.

Description

Multi-source composite heat pump heating system

technical field

The utility model relates to a multi-source composite heat pump heating system, which belongs to the technical field of central air-conditioning engineering.

Background technique

The traditional heat pump heating system mainly uses the air source or the ground source as the heat source, but there are some shortcomings in the existing various heat pump systems. During the operation of the air source heat pump heating system in winter, if the ambient temperature is too low, the evaporator surface condensation may occur. Frost, difficulty in starting the compressor, etc. Although the ground source heat pump heating system has the earth as a stable source of cold and heat, the system requires a certain area of buried pipes and a relatively high initial investment. The existing compound heat pump heating system only uses the traditional heat pump unit to connect different heat sources through the evaporator to work. Although the technical problems of operating efficiency and cold and heat balance have been solved to a certain extent, the relatively high initial investment problem Still haven't gotten a better solution.

Contents of the invention

In view of the above background technologies, in order to better solve the problems of winter heating in my country and alleviate environmental pollution, solve the limitations of existing technologies, and meet the requirements of low-cost and high-efficiency operation, this patent proposes a new multi-source composite heat pump supply thermal system.

The multi-source compound heat pump heating system proposed by the utility model is mainly composed of a multi-source heat pump unit, a user-side circulating pump, a user-side water collector, a heat source-side circulating pump, and a heat source. The components are connected by pipelines. The multi-source heat pump unit has two evaporators, namely an air source evaporator and a water source evaporator. The water source evaporator can be connected to various water sources (including solar hot water, circulating water in buried pipes in ground source heat pumps, surface water, sewage) through pipelines. The multi-source heat pump unit is also equipped with a temperature sensor and an electric switch to regulate the operation of the double evaporator through the temperature signal. In the multi-source heat pump unit, the side of the water source evaporator is connected with two or more heat sources. The air source evaporator in the multi-source heat pump unit is regulated to be turned on and off by the signal transmitted by the temperature sensor.

The technical scheme adopted by the utility model to solve the technical problem is: the condenser of the multi-source heat pump unit, the water collector on the user side and the circulating pump on the user side are connected through pipelines, and the power from the circulating pump on the user side is used to transfer the heat in the condenser to the end user. The water source evaporator of the multi-source heat pump unit, the circulation pump on the heat source side, and the heat source are connected through pipelines, and the heat source side circulation pump provides power to bring the heat from the heat source to the refrigerant in the evaporator. The multi-source heat pump unit is equipped with a temperature sensor and an electric switch. The opening of the double evaporator is controlled by the temperature sensor. When the outdoor temperature T≥7℃, the temperature signal transmitted by the temperature sensor is converted into an electrical signal and acts on the electric switch to start the air source. Evaporator, when the outdoor temperature is below 7°C, turn off the air source evaporator, and only the water source evaporator works. The inlet and outlet of the water source evaporator can be connected to the water source of the ground source heat pump buried pipe, solar collector, surface water, and sewage as the heat source. The evaporating side can be connected to a single heat source. When the cooling and heating load of the building body is unbalanced, it needs to be connected to a composite heat source. The specific situation is implemented according to the actual project.

The beneficial effects of the utility model are as follows: (1) The design of the heat pump unit with double evaporators can simultaneously utilize two energy sources of air source and water source, effectively improving the energy efficiency ratio of the unit. (2) The use of air source greatly reduces the investment cost of the heat pump system. (3) A variety of heat sources can be connected to the water source evaporator side, which improves the operating efficiency of the heat pump system.

Description of drawings:

Fig. 1 is the system schematic diagram of the present utility model;

In the figure 1. Multi-source heat pump unit 2. User side circulation pump 3. Heat source side circulation pump 4. Heat source 5. User side water separator 6. User side water collector

Fig. 2 is the schematic diagram of heat source source of the present utility model;

Fig. 3 is a schematic diagram of an embodiment of the utility model.

Detailed ways:

The specific implementation of the present invention will be further described below in conjunction with accompanying drawing:

Please refer to Fig. 1, the present invention includes a multi-source heat pump unit 1, a user-side circulation pump 2, a heat source-side circulation pump 3, a heat source 4, a user-side water separator 5, a user-side water collector 6, and various valves and other components . Multi-source heat pump unit condenser, user-side circulation pump 2, user-side water separator 5, user-side water collector 6, connected through pipelines; multi-source heat pump unit evaporator (water source), heat source-side circulation pump 3 and heat source 4 Connected by tubing.

Please refer to Figure 2. The water source evaporator can be connected to various forms of water sources, including: solar hot water, water in buried tube heat exchangers, sewage, and surface water.

Please refer to Figure 3. In this embodiment, the buried pipe heat exchanger is used as the heat source 4, the heat source 4 (the buried pipe heat exchanger), and the heat source side circulation pump 3 are connected to the water source evaporator side through pipelines, and circulate through the heat source side. The pump 3 drives the water in the heat source 4 (buried pipe heat exchanger) to flow, and the refrigerant in the water source evaporator evaporates and absorbs heat to remove heat. On the user side, the condenser, the user-side circulating pump 2, the user-side water separator 5, and the user-side water collector 6 are connected through pipelines. to the end user. A temperature sensor and an electric switch are installed in the multi-source heat pump unit 1. When the outdoor temperature T≥7°C, the temperature signal transmitted by the temperature sensor is transformed into an electrical signal and acts on the electric switch to start the air source evaporator. When the outdoor temperature is <7°C Next, turn off the air source evaporator, only the water source evaporator works.

Claims (5)

1. A multi-source compound heat pump heating system, including a multi-source heat pump unit (1), a user-side circulating pump (2), a heat source-side circulating pump (3), a heat source (4), and a user-side water separator (5) . The user-side water collector (6), which is characterized in that: the multi-source heat pump unit (1) adopts a double evaporator design, and is equipped with a temperature sensor and an electric switch; the multi-source heat pump unit (1), the user-side circulating pump (2 ), the user-side water separator (5), and the user-side water collector (6) are connected through pipelines; the multi-source heat pump unit (1), the heat source side circulation pump (3), and the heat source (4) are connected through pipelines; the heat source (4) Four water sources from solar collectors, buried tube heat exchangers, sewage and surface water are used. 2. The multi-source compound heat pump heating system according to claim 1, characterized in that: the multi-source heat pump unit (1) has two evaporators, namely an air source evaporator and a water source evaporator. 3. The multi-source composite heat pump heating system according to claim 1 or 2, characterized in that: the air source evaporator in the multi-source heat pump unit (1) is regulated to be turned on and off by the signal transmitted by the temperature sensor. 4. The multi-source composite heat pump heating system according to claim 1, characterized in that: the water source evaporator side selects four heat sources from solar collectors, buried pipe heat exchangers, sewage, and surface water. 5. The multi-source composite heat pump heating system according to claim 1, characterized in that two or more heat sources are connected to the side of the water source evaporator.