Heating and refrigerating device based on phase change energy storage

Abstract

The utility model discloses a heating and refrigerating device based on phase change energy storage, which belongs to the technical field of heating, ventilation and air conditioning, and comprises heat and cold source equipment, a phase change energy storage heat reservoir and a heat pump. A hot and cold source equipment heat exchanger is arranged in the hot and cold source equipment; the phase change energy storage heat reservoir comprises a phase change energy storage part and a phase change energy storage heat reservoir heat exchanger, and an inlet of the phase change energy storage heat reservoir heat exchanger is connected to an outlet of the hot and cold source equipment heat exchanger through a first pipeline; an inlet of the heat pump input end is connected to an outlet of the phase change energy storage heat reservoir heat exchanger through a second pipeline, and an outlet of the input end is directly or indirectly connected with an inlet of the phase change energy storage heat reservoir heat exchanger. An outlet and an inlet of the output end are connected with a user water supply end and a user water return end respectively. The heating and refrigerating requirements of a user can be met only through one set of hot and cold source equipment, the phase change energy storage heat reservoir capable of storing heat or cold and the heat pump with the dual purposes of cooling and heating. Meanwhile, the device realizes peak load shifting and saves electric charge for users.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating ventilation and air conditioning technical field, specifically, relate to a kind of based on phase change energy storage's heating and refrigeration device. BACKGROUND

[0002] Current energy storage application mode, a set of equipment only has one mode of heat storage or cold storage, cannot satisfy the diversified needs of users, for example, in summer, only heat storage system can not provide effective refrigeration effect when needing refrigeration;Similarly, in winter, only cold storage system can not satisfy the user demand when needing heating. Single-function system needs additional equipment, and the cost is higher for users to use, and the energy efficiency is also low.

[0003] Therefore, the development of equipment that can simultaneously satisfy the heat storage and refrigeration needs, realize the switching of heating and refrigeration in different seasons and environments, helps to improve the overall efficiency and flexibility of the system. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a kind of based on phase change energy storage's heating and refrigeration device, to solve the heating and refrigeration needs of users with a set of equipment.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A kind of based on phase change energy storage's heating and refrigeration device, characterized by comprising:

[0007] Heat source equipment, heat source equipment is internally provided with heat source equipment heat exchanger;

[0008] Phase change energy storage heat store, including phase change energy storage part and phase change energy storage heat store heat exchanger, the inlet of phase change energy storage heat store heat exchanger is connected to the outlet of heat source equipment heat exchanger by first pipeline;

[0009] Heat pump, including input end and output end, the inlet of input end is connected to the outlet of phase change energy storage heat store heat exchanger by second pipeline, and the outlet of input end is directly or indirectly connected to the inlet of phase change energy storage heat store heat exchanger;The outlet and inlet of output end are connected to user water supply end and user return water end respectively.

[0010] Further, the heat source equipment is internally provided with selectively used heating equipment and refrigeration equipment.

[0011] Further, the outlet of the input end of the heat pump is connected to the inlet of the heat source equipment heat exchanger by third pipeline.

[0012] Further, electric valve is arranged between the second pipeline and the third pipeline.

[0013] Further, a primary circulation pump is arranged on the second pipeline.

[0014] Further, a secondary circulation pump is arranged on the connecting pipeline between the outlet of the heat pump output end and the user water supply end.

[0015] Further, a control system is arranged, which is connected with the heat source device, the phase change energy storage heat sink and the heat pump respectively.

[0016] Further, the control system is connected with the primary circulation pump, the secondary circulation pump and the electric valve respectively.

[0017] Further, the control system is connected with the temperature sensor arranged on the user side.

[0018] According to the technical scheme of the utility model, the heat source or the cold source can make the medium in the heat source device heat exchanger heat or cool, when the medium in the heat source device heat exchanger is input to the phase change energy storage heat sink heat exchanger, exchanges heat with the phase change material in the phase change energy storage part, and stores heat energy in the phase change material.

[0019] The utility model only needs a set of heat source device, the phase change energy storage heat sink that can store heat or cold and the heat pump that can be used for heating and cooling, and can solve the heating and cooling demand of the user. DRAWINGS

[0020] The drawings here are used to provide further explanation of the utility model, and form part of the application, the schematic embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0021] Figure 1 It is the schematic diagram of the heating and cooling device based on phase change energy storage of the utility model.

[0022] 1-heat source device, 2-phase change energy storage heat sink, 3-heat pump, 4-heat source device heat exchanger, 5-phase change energy storage part, 6-phase change energy storage heat sink heat exchanger, 7-first pipeline, 8-second pipeline, 9-user water supply end, 10-user return water end, 11-third pipeline, 12-primary circulation pump, 13-secondary circulation pump, 14-control system, 15-electric valve, 16-temperature sensor. CONCRETE IMPLEMENTING METHOD

[0023] In order to make the person skilled in the art better understand the utility model, the utility model is further clearly and completely explained below by combining with the drawings and combining with the embodiment. It should be noted that the features in the embodiment and the embodiment in the application can be combined with each other without conflict.

[0024] The heating and refrigeration device based on phase change energy storage provided by the typical embodiment of the utility model, as shown in the figure, comprises a heat source device 1, a phase change energy storage heat reservoir 2 and a heat pump 3. Figure 1

[0025] The heat source device 1 is internally provided with a heat source device heat exchanger 4, and water is used as the medium in the heat source device heat exchanger 4. The heat source or the cold source can come from air energy, water source heat pump, off-peak electricity, waste heat and various clean and green energy sources, and the heat source or the cold source can make the medium in the heat source device heat exchanger 4 heat or cool. For different energy types, the heat source device 1 should also contain the corresponding selectively used heating device and cooling device.

[0026] For example, an electric heater is installed in the heat source device 1, and off-peak electricity can be used to heat the water medium.

[0027] For example, a water source heat pump is installed in the heat source device 1, and the water body is used as the heat source for winter heating and the cold source for summer, and exchanges heat with the medium water in the heat source device heat exchanger 4.

[0028] For example, an air energy heat pump is installed in the heat source device 1, and air energy can be used to heat the water medium. The air energy heat pump compressor converts low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant exchanges heat with water to be cooled and condensed into liquid at normal temperature. In this process, the refrigerant releases heat to heat the water, so that the water is heated to become hot water. The low-temperature and low-pressure liquid refrigerant absorbs heat from the air through the evaporator (air heat exchanger) to evaporate itself from liquid to gas, and the heat absorbed from the air by the refrigerant becomes low-temperature and low-pressure gas, which is then sucked into the compressor for compression. This cycle is repeated, constantly absorbing heat from the air and releasing heat on the side of the heat source device heat exchanger 4 to produce hot water.

[0029] The phase change energy storage heat reservoir 2 comprises a phase change energy storage part 5 and a phase change energy storage heat reservoir heat exchanger 6, and the inlet of the phase change energy storage heat reservoir heat exchanger 6 is connected to the outlet of the heat source device heat exchanger 4 through a first pipeline 7. The phase change energy storage heat reservoir 2 is used for heat storage or cold storage, and when the medium in the heat source device heat exchanger 4 is input into the phase change energy storage heat reservoir heat exchanger 6, the medium exchanges heat with the phase change material in the phase change energy storage part 5 to store heat energy in the phase change material.

[0030] The phase change energy storage heat reservoir 2 preferably adopts a tube-shell heat exchange structure, the heat exchange medium flows in the shell, and the inorganic phase change energy storage material is enclosed in the tube, so that small temperature difference heat exchange in the solid-liquid phase change process is realized. By using the mechanism that the inorganic phase change material absorbs or releases a large amount of heat during the solid-liquid phase state transition and by means of the reinforced heat transfer structure, small temperature difference heat storage and release of heat energy are realized.

[0031] ​Wherein, the heat pump 3 includes an input end and an output end. The input end is connected to the outlet of the phase change energy storage heat sink heat exchanger 6 through the second pipeline 8, and the outlet of the input end is directly or indirectly connected to the inlet of the phase change energy storage heat sink heat exchanger 6. The outlet and the inlet of the output end are connected to the user water supply end 9 and the user return water end 10, respectively. A secondary circulating pump 13 is arranged on the connecting pipeline between the outlet of the heat pump output end and the user water supply end. The heat pump 3 is used for heating and cooling, and the heat pump 3 is used for increasing or reducing the heat energy stored in the phase change energy storage heat sink 2 to the temperature required by the user.

[0032] In the preferred embodiment, the outlet of the input end of the heat pump 3 is connected to the inlet of the heat cold source equipment heat exchanger 4 through the third pipeline 11. A primary circulating pump 12 is arranged on the second pipeline 8, and an electric valve 15 is arranged between the second pipeline 8 and the third pipeline 11. According to the embodiment, in the complete heat storage or cold storage state, the electric valve 15 is opened, and the medium water can circulate between the heat cold source equipment 1 and the phase change energy storage heat sink 2 through the first pipeline 7, the second pipeline 8 and the third pipeline 11. In the complete heating or refrigeration state, when the electric valve 15 is closed, the medium water can circulate between the heat cold source equipment 1, the phase change energy storage heat sink 2 and the heat pump 3 through the first pipeline 7, the second pipeline 8 and the third pipeline 11. In the heat storage and heat release or cold storage and refrigeration state, part of the medium water circulates between the heat cold source equipment 1 and the phase change energy storage heat sink 2, and part of the medium water circulates between the heat cold source equipment 1, the phase change energy storage heat sink 2 and the heat pump 3.

[0033] In another preferred embodiment, the phase change energy storage-based heating and refrigeration device further comprises a control system 14 connected to the heat cold source equipment 1, the phase change energy storage heat sink 2 and the heat pump 3, respectively, for coordinating the control of the device to realize the heating and refrigeration functions of the device.

[0034] In addition, the control system 14 is connected to the primary circulating pump 12, the secondary circulating pump 13 and the electric valve 15, and is connected to a temperature sensor 16 arranged on the user side. The electric valve 15 is adjusted according to the temperature of the user collected by the temperature sensor 16.

[0035] The device can be divided into a heating mode and a refrigeration mode during operation, and can provide heating for the user in the heating mode and can provide refrigeration for the user in the refrigeration mode.

[0036] Heating mode:

[0037] 1. Heat storage: the primary circulating pump 12 starts to operate, the heat cold source equipment 1 starts to operate, and heating is performed. At the same time, the electric valve 15 is opened to provide heat energy for the phase change energy storage heat sink 2, and the phase change energy storage heat sink 2 stores heat.

[0038] 2, heat release: when the user heating temperature is lower than the set value, the secondary circulating pump 13 starts to run, and the primary circulating pump 12 starts to run at the same time. When the primary circulating pump 12 receives the start signal, it starts to run, and the heat pump 3 starts to work, which raises the water through the phase change energy storage heat sink 2 to the temperature required by the user. When the user heating temperature reaches the set value, the secondary circulating pump 13 stops running, and the primary circulating pump 12 and the heat pump 3 also stop running after a delay.

[0039] 3, heat storage and release: when the user heating temperature is lower than the set value, the secondary circulating pump 13, the primary circulating pump 12, the heat source device 1 and the heat pump 3 start to run in turn, and the user is given heat release and the phase change energy storage heat sink 2 is given heat storage. The electric valve 15 adjusts the opening amount according to the user's temperature.

[0040] Refrigeration mode:

[0041] 1, cold storage: the primary circulating pump 12 starts to run, and the heat source device 1 starts to start, and refrigeration is carried out. At the same time, the electric valve 15 is opened, and the phase change energy storage heat sink 2 is provided with cold energy, and the phase change energy storage heat sink 2 carries out energy storage.

[0042] 2, refrigeration: when the user refrigeration temperature is higher than the set value, the secondary circulating pump 13 starts to run, and the primary circulating pump 12 starts to run at the same time. When the primary circulating pump 12 receives the start signal, it starts to run, and the heat pump 3 starts to work, which reduces the water through the phase change energy storage heat sink 2 to the temperature required by the user.

[0043] 3, cold storage and refrigeration: when the user refrigeration temperature is higher than the set value, the secondary circulating pump 13, the primary circulating pump 12, the heat source device 1 and the heat pump 3 start to run at the same time, and the user is given refrigeration and the phase change energy storage heat sink 2 is given cold storage. The electric valve 15 adjusts the opening amount according to the user's temperature.

[0044] The scope of protection required by the utility model is not limited to the above specific embodiments. For those skilled in the art, the utility model can have various modifications and changes, and any modification, improvement and equivalent replacement made within the concept and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A heating and refrigeration device based on phase change energy storage, characterized in that, The utility model relates to a heat pump system, including: a hot and cold source device (1) internally provided with a hot and cold source device heat exchanger (4); a phase change energy storage heat reservoir (2) including a phase change energy storage part (5) and a phase change energy storage heat reservoir heat exchanger (6), the inlet of the phase change energy storage heat reservoir heat exchanger (6) being connected to the outlet of the hot and cold source device heat exchanger (4) through a first pipeline (7); a heat pump (3) including an input end and an output end, the inlet of the input end being connected to the outlet of the phase change energy storage heat reservoir heat exchanger (6) through a second pipeline (8), the outlet of the input end being directly or indirectly connected to the inlet of the phase change energy storage heat reservoir heat exchanger (6), and the outlet and the inlet of the output end being connected to a user water supply end (9) and a user return water end (10) respectively.

2. The phase change thermal energy storage based heating and cooling device of claim 1, wherein: The hot and cold source device (1) is internally provided with selectively used heating equipment and refrigeration equipment.

3. The phase change thermal energy storage based heating and cooling device as claimed in claim 1 or 2, wherein: The outlet of the input end of the heat pump (3) is connected to the inlet of the hot and cold source device heat exchanger (4) through a third pipeline (11).

4. The phase change thermal energy storage based heating and cooling device of claim 3, wherein: An electric valve (15) is arranged between the second pipeline (8) and the third pipeline (11).

5. The phase change thermal energy storage based heating and cooling device as claimed in claim 4, wherein: A primary circulation pump (12) is arranged on the second pipeline (8).

6. The phase change thermal energy storage based heating and cooling device as claimed in claim 5, wherein: A secondary circulation pump (13) is arranged on the connecting pipeline between the outlet of the output end of the heat pump (3) and the user water supply end (9).

7. The phase change thermal energy storage based heating and cooling device as claimed in claim 6, wherein: A control system (14) is included, and the control system (14) is connected to the hot and cold source device (1), the phase change energy storage heat reservoir (2) and the heat pump (3) respectively.

8. The phase change thermal energy storage based heating and cooling device as claimed in claim 7, wherein: The control system (14) is connected to the primary circulation pump (12), the secondary circulation pump (13) and the electric valve (15) respectively.

9. The phase change thermal energy storage based heating and cooling device as claimed in claim 8, wherein: The control system (14) is connected to a temperature sensor (16) arranged on the user side.

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