Low-temperature air source heat pump with quick defrosting structure

Abstract

The utility model relates to low temperature air source heat pump technical field especially relates to a low temperature air source heat pump with quick defrosting structure, include: outer frame, evaporator and heating assembly, motor is fixedly connected with motor on the outer frame, mounting seat is rotatably connected with mounting seat in the outer frame, scraper rod is fixedly connected with scraper rod on the mounting seat, collection frame is fixedly connected with collection frame on the outer frame bottom, pull -out bin is connected with pull -out bin in the collection frame slidingly. The utility model cooperates with the scraper rod to the collaborative mode that the frost layer is heated and is stripped by using heating assembly, can finish cleaning without the frost layer completely melting, greatly shortens defrosting time -consuming, effectively guarantees heat pump system heating continuity, promotes user use experience.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature air source heat pump technology, and in particular to a low-temperature air source heat pump with a rapid defrosting structure. Background Technology

[0002] Low-temperature air source heat pumps are highly efficient and energy-saving heat energy conversion devices, widely used in heating, cooling, and domestic hot water supply in cold regions. Their basic components include a compressor, evaporator, condenser, throttling device, and control system. When operating in low-temperature environments, the evaporator absorbs low-grade heat energy from the outdoor air and transfers it to the indoor side to meet heating or hot water needs; this process is crucial for the equipment's energy-saving operation.

[0003] However, when the ambient temperature is low and the air humidity is high, the surface temperature of the evaporator can easily drop below freezing, causing water vapor in the air to condense on its outer surface and gradually form a frost layer. The continuous accumulation of frost significantly reduces the heat exchange efficiency of the evaporator, hindering heat transfer between the air and the evaporator surface. It also increases airflow resistance, leading to increased fan energy consumption. Under these dual effects, not only does the overall system performance deteriorate and operating energy consumption increase, but in severe cases, it can also cause equipment malfunctions and affect the stable output of the system.

[0004] To address this issue, existing technologies generally employ heating defrosting solutions, which involve heating the evaporator surface using methods such as electric heating to melt the frost layer. However, when the frost layer is thick, complete removal can only be achieved by increasing the heating temperature or extending the heating time. Extending the heating time requires prolonged system shutdown, affecting heating continuity and user experience, while using excessively high heating temperatures may subject internal components to excessive thermal stress, causing damage and shortening equipment lifespan. Furthermore, both extending the heating time and increasing the heating temperature significantly increase energy consumption during the defrosting phase, weakening the energy-saving advantages of low-temperature air source heat pumps and reducing overall equipment operating efficiency. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model addresses the technical problem by providing a low-temperature air source heat pump with a rapid defrosting structure. This aims to shorten the defrosting time, reduce heat input, and avoid adverse effects on the pump's structure and performance while ensuring effective defrosting.

[0006] The technical implementation scheme of this utility model is as follows: a low-temperature air source heat pump with a rapid defrosting structure, comprising: an outer frame with a grid structure at its bottom; an evaporator fixedly connected inside the outer frame; a heating component fixedly connected inside the outer frame for providing heat to melt the frost layer; the device further comprises: a controller fixedly connected to the outer wall of the outer frame, with the heating component electrically connected to it; a motor fixedly connected to the outer frame and electrically connected to the controller; a mounting base rotatably connected inside the outer frame, located at the center of the top of the evaporator, with the output end of the motor fixed thereto; a scraper fixedly connected to the mounting base, its structure conforming to the outer surface of the evaporator, and its cross-section adopting a triangular structure, rotating along its own sharp side during operation; a collection frame fixedly connected to the bottom of the outer frame, into which the melted frost water mixture falling from the grid structure will fall; and a pull-out box slidably connected to the collection frame for collecting the melted frost water mixture.

[0007] Furthermore, a connecting chamber is provided between the mounting base and the scraper; the device also includes: a fixing plate, which is fixedly connected to the chamber area within the mounting base; and a drainage fan, which is fixedly connected to the fixing plate and electrically connected to the controller for introducing an external heat source into the chamber.

[0008] Furthermore, the device also includes a drainage layer, which is fixedly connected between the outer frame and the collection frame for centrally draining the stripped frost water mixture.

[0009] Furthermore, the device also includes a brush, with the brush fixedly connected to the bottom of the scraper, which contacts the grid structure.

[0010] Furthermore, guide channels are provided in the inner walls of the outer frame and the collection box to guide the heat source generated by the heating component to the collection box.

[0011] Furthermore, the device also includes a liquid level sensor, which is fixedly connected inside the pull-out box and is electrically connected to the controller to monitor the liquid level of the frost-water mixture inside the pull-out box in real time.

[0012] This invention has the following advantages: By using a heating element to heat and peel off the frost layer, combined with a scraper to mechanically peel off the frost layer, the defrosting process can be completed without completely melting the frost layer, significantly shortening the defrosting time, effectively ensuring the heating continuity of the heat pump system, and improving the user experience; furthermore, the heating element does not need to maintain high power or operate for a long time, significantly reducing energy consumption during the defrosting stage, further highlighting the energy-saving characteristics of this invention, reducing heating requirements, avoiding thermal damage to internal components from high-temperature heating, and extending the overall service life of this invention. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the internal structure of this utility model.

[0015] Figure 3 This is a cross-sectional view of the connection structure between the inner cavity of the mounting base and the drainage fan of this utility model.

[0016] In the above attached diagram: 1: outer frame, 2: heating component, 3: evaporator, 4: controller, 5: motor, 501: mounting base, 6: scraper, 7: drainage layer, 8: collection frame, 9: pull-out box, 10: chamber, 11: fixing plate, 12: drainage fan, 13: brush, 14: guide channel, 15: liquid level sensor. Detailed Implementation

[0017] 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.

[0018] Example: A low-temperature air source heat pump with a rapid defrosting structure, see reference. Figures 1-2 The device includes: an outer frame 1 with a grid structure at its bottom for the passage of melted frost water mixture; an evaporator 3 fixedly installed inside the outer frame 1; a heating assembly 2 fixedly installed inside the outer frame 1 to provide a heat source and accelerate the melting of the frost layer; the device also includes: a controller 4 fixedly installed on the outer wall of the outer frame 1 as the control center of the device, with the heating assembly 2 electrically connected to it; a motor 5 fixedly installed on the outer frame 1, which is electrically connected to the controller 4; and a mounting base 501 rotatably mounted inside the outer frame 1. 01, located at the top center of the evaporator 3, with the output end of the motor 5 fixed thereto to provide rotational power; scraper 6, fixedly mounted on the mounting base 501, its structure fits the outer surface of the evaporator 3 and its cross-section adopts a triangular structure, and will rotate along its own sharp side during operation to achieve efficient frost removal; collection frame 8, fixedly mounted at the bottom of the outer frame 1, the melted frost water mixture falling from the grid structure will fall into the collection frame 8; pull-out box 9, a pull-out box 9 is slidably mounted on the collection frame 8 for centralized storage of the melted frost water mixture.

[0019] When it is necessary to clean the frost layer condensed on the surface of the evaporator 3, the controller 4 issues a command to simultaneously start the heating component 2 and the motor 5: the heating component 2 releases heat to accelerate the melting process of the frost layer on the surface of the evaporator 3, while at the same time, the motor 5 drives the scraper 6 to rotate along its own sharp side, and the scraper 6 peels the frost layer from the inside of the frost layer to the surface of the evaporator 3; this defrosting structure design allows the entire heating component 2 to complete defrosting without completely melting the frost layer, greatly shortening the frost cleaning time and reducing energy consumption, effectively avoiding equipment shutdown or thermal damage caused by prolonged heating or excessively high temperature heating; during the defrosting process, the frost water mixture generated by melting will fall into the collection box 8 through the grid structure at the bottom of the outer frame 1, and finally collect in the pull-out box 9; after the defrosting work is completed, simply pull out the pull-out box 9 from the collection box 8 to uniformly process the frost water mixture inside, making the operation convenient and efficient.

[0020] See Figures 2-3 A communicating chamber 10 is provided inside the mounting base 501 and between the scraper 6; the device also includes: a fixing plate 11, which is fixedly installed in the area of ​​the chamber 10 inside the mounting base 501; and a diversion fan 12, which is fixedly installed on the fixing plate 11 and is electrically connected to the controller 4 to introduce an external heat source into the chamber 10.

[0021] When the heating component 2 is running and melts the frost layer from the outside, the control fan 12 is started. By drawing the heat source into the chamber 10 and circulating it along the chamber 10 to the scraper 6, the scraper 6 carries its own heat to assist in melting the frost layer while physically peeling it off, thereby further improving the efficiency and effect of the scraper 6 in peeling off the frost layer.

[0022] See Figures 1-3 The outer frame 1 and the inner wall of the collection box 8 are provided with a guide channel 14 to continuously guide the heat source generated by the heating component 2 into the collection box 8, so as to prevent the frost water mixture from refreezing in the pull-out box 9 and affecting subsequent cleaning; the device also includes: a diversion layer 7, which is fixedly installed between the outer frame 1 and the collection box 8 to centrally divert the stripped frost water mixture, so as to prevent the frost water mixture from overflowing and refreezing in the low temperature area inside the device, thus ensuring the collection and treatment of the frost water mixture; a brush 13, and the bottom of the scraper 6 are fixed. A brush 13 is installed, which contacts the grid structure at the bottom of the outer frame 1 to clean the frost layer attached to the grid structure when the scraper 6 rotates, so as to prevent the grid structure from being blocked and affecting the collection and treatment of the frost water mixture; a liquid level sensor 15 is fixedly installed in the pull-out box 9, which is electrically connected to the controller 4 to monitor the liquid level of the frost water mixture in the pull-out box 9 in real time. When the liquid level of the frost water mixture reaches a preset threshold, it sends a signal to the controller 4 and the controller 4 triggers an alert to remind the user to clean.

[0023] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A low-temperature air source heat pump with a rapid defrosting structure, comprising: The outer frame (1) has a grid structure at its bottom; an evaporator (3) is fixedly connected inside the outer frame (1); a heating component (2) is fixedly connected inside the outer frame (1) to provide a heat source to melt the frost layer; the low-temperature air source heat pump is characterized by: a controller (4) is fixedly connected to the outer wall of the outer frame (1), and the heating component (2) is electrically connected to it; a motor (5) is fixedly connected to the outer frame (1), and it is electrically connected to the controller (4); a mounting base (501) is rotatably connected inside the outer frame (1). The mounting base (501) is located at the top center of the evaporator (3), and the output end of the motor (5) is fixed thereto; the scraper (6) is fixedly connected to the mounting base (501), its structure fits the outer surface of the evaporator (3), and its cross section adopts a triangular structure, and it will rotate along its own sharp side when working; the collection frame (8) is fixedly connected to the bottom of the outer frame (1), and the melted frost water mixture falling from the grid structure will fall into the collection frame (8); the pull-out box (9) is slidably connected to the collection frame (8) for centralized storage of the melted frost water mixture.

2. A low-temperature air source heat pump with a rapid defrosting structure according to claim 1, characterized in that: A connecting chamber (10) is provided between the mounting base (501) and the scraper (6); the low-temperature air source heat pump also includes: a fixing plate (11), which is fixedly connected to the chamber (10) area in the mounting base (501); and a diversion fan (12), which is fixedly connected to the fixing plate (11) and is electrically connected to the controller (4) to introduce an external heat source into the chamber (10).

3. A low-temperature air source heat pump with a rapid defrosting structure according to claim 1, characterized in that: The low-temperature air source heat pump also includes: a drainage layer (7), which is fixedly connected between the outer frame (1) and the collection frame (8) for centrally draining the stripped frost water mixture.

4. A low-temperature air source heat pump with a rapid defrosting structure according to claim 1, characterized in that: The low-temperature air source heat pump also includes a brush (13), with the brush (13) fixedly connected to the bottom of the scraper (6), which is in contact with the grid structure.

5. A low-temperature air source heat pump with a rapid defrosting structure according to claim 1, characterized in that: A guide channel (14) is provided in the inner wall of the outer frame (1) and the collection box (8) to guide the heat source generated by the heating component (2) to the collection box (8).

6. A low-temperature air source heat pump with a rapid defrosting structure according to claim 1, characterized in that: The low-temperature air source heat pump also includes: a liquid level sensor (15). The liquid level sensor (15) is fixedly connected inside the pull-out box (9) and is electrically connected to the controller (4) to monitor the liquid level height of the frost water mixture inside the pull-out box (9) in real time.

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