Phase change heat storage module for air source heat pump

Abstract

The phase change heat storage module for the air source heat pump comprises an outer box body, the outer box body sequentially comprises a carbon steel spraying shell, a polyurethane foaming heat preservation layer and an inner container from outside to inside, an auxiliary heat storage mechanism is arranged in the inner container, and the auxiliary heat storage mechanism comprises a heat storage assembly and a plurality of installation assemblies; the heat storage assembly comprises a double-layer support, the inner portion of the double-layer support is fixedly connected with fourteen installation circular rings through cross connecting rods, and the fourteen installation circular rings are arranged on an upper layer and a lower layer. According to the phase change heat storage module for the air source heat pump, the air energy matched water tank is filled with the independently-sealed phase change heat storage bottle, the phase change heat storage module for the air source heat pump is integrated, the heat storage capacity of an existing air energy matched water tank is improved, the starting and stopping frequency of equipment is reduced, and the service life is prolonged; low-price thermal energy is stored during the "valley electricity" period for invoking during the "peak" period.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump energy storage technology, specifically to a phase change heat storage module for air source heat pumps. Background Technology

[0002] The water tank for air source heat pumps serves both as a buffer and a heat storage unit. Its main function is to balance instantaneous pressure changes in the system and reduce heat output fluctuations. It is an important component of air source heat pump systems. Its characteristic is that it optimizes system operation by storing heat energy. It is of great significance in terms of energy saving, economy, comfort and equipment protection, and is a key component for improving the overall performance of air source water heating systems.

[0003] The patent publication number CN218915403U discloses an air source heat pump unit, a heater unit, a hot water storage tank, and an air conditioning unit. The output end of the air source heat pump unit is fixedly provided with a main pipe, and the end of the main pipe is fixedly provided with a branch pipe. The heater unit, the hot water storage tank, and the air conditioning unit are located at the end of the branch pipe. The heater unit, the hot water storage tank, and the air conditioning unit are connected to the air source heat pump unit through a circulation pipe.

[0004] As shown in the above technology, existing air source heat pumps use water tanks for heat storage, but their heat storage capacity is limited. The heat storage medium is water, utilizing the sensible heat of the medium. Temperature fluctuations are linear, making them difficult to control. Insufficient heat storage capacity and difficulty in system control lead to drawbacks such as inability to cope with frequent equipment starts and reverse heating defrosting caused by changes in the external environment. In extreme environments, an external auxiliary heat source is required, resulting in increased energy consumption. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a phase change thermal energy storage module for air source heat pumps, which solves the problem of limited thermal energy storage capacity of existing phase change thermal energy storage modules for air source heat pumps.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an outer casing for a phase change heat storage module for an air source heat pump, wherein the outer casing consists of a carbon steel sprayed shell, a polyurethane foam insulation layer and an inner liner from the outside to the inside, and an auxiliary heat storage mechanism is provided inside the inner liner, the auxiliary heat storage mechanism including a heat storage component and multiple sets of installation components;

[0007] The thermal storage component includes a double-layer support frame. Inside the double-layer support frame, fourteen mounting rings are fixedly connected by cross-shaped connecting rods. The fourteen mounting rings are arranged in upper and lower layers. A phase change thermal storage bottle is installed inside the mounting ring through a mounting assembly. The phase change thermal storage bottle is used to store heat.

[0008] Preferably, multiple screws are inserted into both the left and right sides inside the double-layer bracket, and the multiple screws pass through the outer casing and extend to the outside of the outer casing. Nuts are threaded onto the surface of the screws located on the outside of the outer casing.

[0009] Preferably, the mounting assembly includes two fixing blocks, left and right, which are respectively fixed on the left and right sides of the phase change thermal storage bottle surface. The fixing blocks have two circular grooves inside, and T-shaped sliding rods are slidably connected to the inner surfaces of the two circular grooves. The other ends of the two T-shaped sliding rods are fixedly connected to a moving block.

[0010] Preferably, the surfaces of the two T-shaped slide rods located inside the circular groove are fitted with limiting springs, and the interior of the moving block is provided with a U-shaped groove.

[0011] Preferably, the mounting ring has two L-shaped grooves on the left and right sides inside, and the L-shaped grooves are composed of a vertical part and a horizontal arc-shaped part. The surface of the mounting ring is fixedly connected with left and right limiting blocks that cooperate with the U-shaped grooves.

[0012] Preferably, the left and right sides of the outer casing are respectively fixedly connected to a water inlet pipe and a water outlet pipe, the top of the outer casing is also provided with an exhaust port and a temperature measuring interface, and the inner liner is made of polypropylene.

[0013] Beneficial effects

[0014] This invention provides a phase change thermal energy storage module for air source heat pumps. Compared with the prior art, it has the following advantages:

[0015] 1. This phase change thermal energy storage module for air source heat pumps includes a thermal energy storage component comprising a double-layer support frame. Inside the double-layer support frame, fourteen mounting rings are fixedly connected via cross-shaped connecting rods. These fourteen mounting rings are arranged in upper and lower layers, and each mounting ring contains a phase change thermal energy storage bottle. By filling the air source heat pump's water tank with individually sealed phase change thermal energy storage bottles, this module is integrated into the air source heat pump's phase change thermal energy storage module. This increases the thermal energy storage capacity of the existing air source heat pump's water tank, solves the problem of unbalanced system heat output, reduces the number of equipment start-ups and shutdowns, and increases service life. Utilizing the high storage capacity of the latent heat of phase change thermal energy storage, it stores low-cost thermal energy during off-peak hours for use during peak hours. Combined with the high efficiency output of the air source heat pump, this creates a synergistic effect, ultimately achieving the goal of saving energy and reducing operating costs.

[0016] 2. The phase change heat storage module for this air source heat pump includes two fixing blocks on the left and right sides of the phase change heat storage bottle surface, respectively. The fixing blocks have two circular grooves inside. The phase change heat storage bottle in the auxiliary heat storage mechanism is installed in the installation ring through the installation components. When the phase change heat storage bottle is rotated, the limiting block enters the L-shaped groove to complete the installation. The operation is convenient and quick. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the auxiliary heat storage mechanism of this utility model;

[0021] Figure 5 This is a partial schematic diagram of the auxiliary heat storage mechanism of this utility model;

[0022] Figure 6 This is an exploded view of the mounting components of this utility model.

[0023] In the diagram: 1. Carbon steel spray-coated outer shell; 2. Polyurethane foam insulation layer; 3. Inner liner; 4. Thermal storage component; 41. Double-layer bracket; 42. Connecting rod; 43. Mounting ring; 44. Phase change thermal storage bottle; 45. Screw; 46. Nut; 5. Mounting component; 51. Fixing block; 52. Circular groove; 53. T-shaped slide bar; 54. Moving block; 55. Limiting spring; 56. U-shaped groove; 57. L-shaped groove; 58. Limiting block; 6. Water outlet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-6 The air source heat pump uses a phase change thermal storage module, which offers two technical solutions:

[0026] The first embodiment includes an outer casing, which consists of a carbon steel sprayed shell 1, a polyurethane foam insulation layer 2, and an inner liner 3 from the outside to the inside. Water inlet pipes and water outlet pipes 6 are fixedly connected to the left and right sides of the outer casing, respectively. An exhaust port and a temperature measuring interface are also provided on the top of the outer casing. The inner liner 3 is made of polypropylene. An auxiliary heat storage mechanism is provided inside the inner liner 3. The auxiliary heat storage mechanism includes a heat storage component 4 and multiple sets of installation components 5.

[0027] The thermal storage component 4 includes a double-layer bracket 41. Inside the double-layer bracket 41, fourteen mounting rings 43 are fixedly connected by cross-shaped connecting rods 42. The fourteen mounting rings 43 are arranged in upper and lower layers. A phase change thermal storage bottle 44 is installed inside the mounting rings 43. The phase change thermal storage bottle 44 is installed inside the mounting rings 43 by mounting components 5. The phase change thermal storage bottle 44 is used to store heat. Multiple screws 45 are inserted on both the left and right sides inside the double-layer bracket 41. The multiple screws 45 pass through the outer casing and extend to the outside of the outer casing. Nuts 46 are threadedly connected to the surface of the screws 45 on the outside of the outer casing.

[0028] By filling the air source heat pump's water tank with a separately sealed phase change heat storage bottle 44, it is integrated into an air source heat pump phase change heat storage module, increasing the heat storage capacity of the existing air source heat pump's water tank, solving the problem of unbalanced system heat output, reducing the number of equipment start-ups and shutdowns and increasing service life, and utilizing the high storage capacity of the latent heat of phase change heat storage, low-cost heat energy is stored during off-peak hours for use during peak hours. Combined with the high efficiency output of the air source heat pump, it forms a synergistic effect, ultimately achieving the goal of saving energy and reducing operating costs.

[0029] The second embodiment differs from the first embodiment in that: the mounting component 5 includes two fixing blocks 51, which are fixed on the left and right sides of the surface of the phase change heat storage bottle 44, respectively. The fixing blocks 51 have two circular grooves 52 inside, and T-shaped sliding rods 53 are slidably connected to the inner surfaces of the two circular grooves 52. The other ends of the two T-shaped sliding rods 53 are fixedly connected to moving blocks 54. Limiting springs 55 are sleeved on the surfaces of the two T-shaped sliding rods 53 inside the circular grooves 52. The moving blocks 54 have U-shaped grooves 56 inside. The mounting ring 43 has two L-shaped grooves 57 inside, which are composed of a vertical part and a horizontal arc part. The mounting ring 43 has left and right limiting blocks 58 fixedly connected to the surface of the mounting ring 43 for cooperating with the U-shaped grooves 56.

[0030] The phase change thermal storage bottle 44 in the auxiliary thermal storage mechanism is installed in the mounting ring 43 via the mounting assembly 5. Installation is completed by rotating the phase change thermal storage bottle 44 so that the limiting block 58 enters the L-shaped groove 57. The operation is convenient and quick.

[0031] In use, the double-layer bracket 41 is placed inside the carbon steel spray-coated outer shell 1, and the screw 45 is inserted from the inside of the double-layer bracket 41 and passes through the outer shell to the outside. Then, the nut 46 is used to fix it. Next, the phase change thermal storage bottle 44 is placed in the mounting ring 43, and the fixing block 51 is aligned with the vertical part of the L-shaped groove 57. After alignment, the phase change thermal storage bottle 44 is rotated so that the fixing block 51 enters the horizontal arc part of the L-shaped groove 57. During the rotation, the moving block 54 contacts the limiting block 58 and pushes the moving block 54 to move. When the limiting block 58 is aligned with the U-shaped groove 56, the limiting spring 55 causes the limiting block 58 to enter the U-shaped groove 56. At this time, the installation of the phase change thermal storage bottle 44 is completed. In addition, when the medium in the carbon steel spray-coated outer shell 1 stores energy, the phase change thermal storage bottle 44 also stores energy.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phase change thermal storage module for an air source heat pump comprising an outer casing characterised in that: The outer casing consists of a carbon steel sprayed shell (1), a polyurethane foam insulation layer (2), and an inner liner (3) from the outside to the inside. An auxiliary heat storage mechanism is provided inside the inner liner (3), which includes a heat storage component (4) and multiple sets of installation components (5). The heat storage component (4) includes a double-layer bracket (41). Inside the double-layer bracket (41), several mounting rings (43) are fixedly connected by cross-shaped connecting rods (42). The mounting rings (43) are arranged in upper and lower layers. A phase change heat storage bottle (44) is installed inside the mounting ring (43). The phase change heat storage bottle (44) is installed inside the mounting ring (43) by a mounting component (5). The phase change heat storage bottle (44) is used to store heat.

2. The phase change thermal storage module for an air source heat pump according to claim 1, characterized in that: Multiple screws (45) are inserted into the left and right sides inside the double-layer bracket (41), and the multiple screws (45) pass through the outer box and extend to the outside of the outer box. The screws (45) are threaded with nuts (46) on the surface of the outer box.

3. The phase change thermal storage module of claim 1, wherein: The mounting assembly (5) includes two fixing blocks (51) on the left and right sides respectively. The two fixing blocks (51) are fixed on the left and right sides of the surface of the phase change heat storage bottle (44). Two circular grooves (52) are opened inside the fixing blocks (51), and T-shaped slide rods (53) are slidably connected to the inner surfaces of the two circular grooves (52). The other ends of the two T-shaped slide rods (53) are fixedly connected to the moving blocks (54).

4. The phase change thermal storage module of claim 3, wherein: The surfaces of the two T-shaped slide bars (53) located inside the circular groove (52) are fitted with limiting springs (55), and the interior of the moving block (54) is provided with a U-shaped groove (56).

5. The phase change thermal storage module of claim 4, wherein: The mounting ring (43) has two L-shaped grooves (57) on the left and right sides inside, and the L-shaped grooves (57) are composed of a vertical part and a horizontal arc part. The mounting ring (43) has a limiting block (58) fixedly connected to the surface of the mounting ring (43) for cooperating with the U-shaped groove (56).

6. The phase change thermal storage module of claim 1, wherein: The outer casing is fixedly connected to the water inlet pipe and the water outlet pipe (6) on the left and right sides respectively. The top of the outer casing is also provided with an exhaust port and a temperature measuring interface. The inner liner (3) is made of polypropylene.

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