Automatic temperature and humidity defrosting device for air source heat pump

Abstract

The utility model relates to the technical field of air source heat pumps, in particular to an automatic temperature and humidity defrosting device for an air source heat pump, which is characterized in that a base comprises a disc-shaped shell positioned under an outdoor coil pipe of the air source heat pump and a water collecting cover connected to the outer edge of the top surface of the disc-shaped shell, and a plurality of water inlet holes are formed in the top surface of the disc-shaped shell; an insertion hole is formed in the top surface of the disc-shaped shell close to the edge; the bottom end of the water supply pipe is inserted into the insertion hole; the air source heat pump outdoor coil pipe is sleeved with the annular shell, the annular shell is connected with the top end of the water supply pipe in a sleeved mode, and a plurality of water spraying holes are formed in the inner circumferential wall of the annular shell. The input end of the water pump is connected to the bottom of an inner cavity of the disc-shaped shell. The electric heating disc is arranged at the bottom of the inner cavity of the disc-shaped shell; the connecting pipe is located in an inner cavity of the disc-shaped shell and used for connecting the bottom end of the water supply pipe to the output end of the water pump. The problem that an air source heat pump defrosting device is difficult to have safety, high efficiency and low cost at the same time is well solved.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump technology, specifically to an automatic defrosting device for air source heat pumps with temperature and humidity control. Background Technology

[0002] An air source heat pump is an energy-saving device that uses high-grade energy to transfer heat from a low-grade heat source (air) to a high-grade heat source. It mainly consists of an air source heat pump circulation system and a water storage tank. An air source heat pump water heater is a device that produces hot water by consuming some electrical energy to transfer heat from the air to the water.

[0003] Air source heat pumps are significantly affected by the ambient temperature and humidity during actual operation, and frosting can occur in low-temperature environments. For example, in winter, when an air source heat pump heats an indoor space, if the surface temperature of the outdoor coil is below 0°C and also below the dew point temperature of the outdoor air, frost will form on the outdoor coil. Frost on the surface of the outdoor heat exchanger leads to poor unit reliability. Frost has two main effects on heat pump operation: firstly, a large accumulation of frost weakens the heat transfer performance of the evaporator; secondly, frost hinders gas flow between the outdoor coils, increasing fan energy loss. Therefore, as the frost layer on the outdoor heat exchanger wall increases, the outdoor heat exchanger evaporation temperature decreases, the unit's heating capacity decreases, fan performance deteriorates, input current increases, and the coefficient of performance (COP) decreases. In severe cases, the compressor may stop operating, causing the unit to malfunction.

[0004] Minimizing the adverse effects of frosting and defrosting processes on heat pump units and the indoor environment is crucial for the wider and more efficient operation of air source heat pumps. Currently, the main defrosting methods for air source heat pumps include hot gas bypass defrosting, energy storage defrosting, and electric heating defrosting. However, these methods generally suffer from high costs, poor defrosting effectiveness, and potential safety hazards. Utility Model Content

[0005] The purpose of this invention is to provide an automated defrosting device for air source heat pumps, which solves the problem that current air source heat pump defrosting devices are difficult to achieve simultaneously in terms of safety, efficiency, and low cost.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic defrosting device for air source heat pumps, wherein the base includes a disc-shaped shell located directly below the outdoor coil of the air source heat pump and a water collection cover connected to the outer edge of the top surface of the disc-shaped shell. The top surface of the disc-shaped shell has several water inlet holes, and the top surface of the disc-shaped shell near the edge has an insertion hole. The bottom end of the water supply pipe is inserted into the insertion hole. An annular shell is fitted around the outdoor coil of the air source heat pump, and the annular shell is sleeved with the top end of the water supply pipe. The inner circumferential wall of the annular shell has several water spray holes. The input end of the water pump is connected to the bottom of the inner cavity of the disc-shaped shell. An electric heating plate is located at the bottom of the inner cavity of the disc-shaped shell. A connecting pipe is located in the inner cavity of the disc-shaped shell and is used to connect the bottom end of the water supply pipe to the output end of the water pump.

[0007] Preferably, the annular shell is fitted around the middle of the outdoor coil of the air source heat pump, the inner peripheral wall of the annular shell has an arc-shaped convex structure, and the outer wall of the annular shell is connected to a water inlet port that matches the top of the water supply pipe.

[0008] Preferably, the disc-shaped housing has a sleeve hole in the middle, and the water pump is fitted into the sleeve hole.

[0009] Preferably, the disc-shaped housing has two symmetrical insertion holes near the edge on its top surface, and the outer walls on both sides of the annular housing have water inlet ports corresponding to the positions of the insertion holes.

[0010] Preferably, the connecting pipe includes a threaded sleeve that fits into the bottom end of the water supply pipe and a water inlet pipe with one end connected to the side wall of the threaded sleeve and the other end connected to the output end of the water pump.

[0011] Preferably, the top and bottom ends of the water supply pipe are respectively rotatably fitted with threaded joints, the threaded joint at the bottom end of the water supply pipe is threadedly fitted and matched with the threaded sleeve, and the threaded joint at the top end of the water supply pipe is threadedly fitted with the water inlet port.

[0012] Preferably, the bottom end of the side wall of the disc-shaped housing is provided with a venting connector, and a venting valve is installed on the outer end of the venting connector.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model relates to an automated defrosting device for air source heat pumps, which has a simple structure, low investment cost, and is safe and reliable, making it easy to safely and efficiently defrost the outdoor coils of air source heat pumps. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the base of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the water supply pipe of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the annular shell of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the connecting pipe fitting of this utility model.

[0020] In the diagram: 1-Base; 1.1-Disc-shaped housing; 1.1.1-Water inlet; 1.1.2-Sleeve hole; 1.1.3-Insertion hole; 1.2-Water collection cover; 1.3-Drain connector;

[0021] 2-Water supply pipe; 2.1-Threaded connector;

[0022] 3-Annular shell; 3.1-Water inlet port; 3.2-Water spray hole;

[0023] 4-Water pump;

[0024] 5-Electric heating plate;

[0025] 6-Connecting pipe fittings; 6.1-Threaded sleeve; 6.2-Water inlet pipe;

[0026] 7- Drain valve. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-5 This utility model provides a technical solution: an automatic defrosting device for air source heat pumps, comprising a base 1 including a disc-shaped housing 1.1 located directly below the outdoor coil of the air source heat pump and a water collection cover 1.2 connected to the outer edge of the top surface of the disc-shaped housing 1.1. The top surface of the disc-shaped housing 1.1 has several water inlet holes 1.1.1, and an insertion hole 1.1.3 is provided near the edge of the top surface of the disc-shaped housing 1.1. A sleeve hole 1.1.2 is provided in the middle of the disc-shaped housing 1.1, and a drain connector 1.3 is provided at the bottom of the side wall of the disc-shaped housing 1.1. A drain valve 7 is installed at the outer end of the drain connector 1.3. Two insertion holes 1.1.3 are symmetrically provided near the edge of the top surface of the disc-shaped housing 1.1.

[0029] The water pump 4 is fitted inside the sleeve hole 1.1.2, and the input end of the water pump 4 extends to the bottom of the inner cavity of the disc-shaped housing 1.1.

[0030] The annular housing 3 is fitted around the outer periphery of the outdoor coil of the air source heat pump. The inner circumferential wall of the annular housing 3 has an arc-shaped convex structure. Water inlet ports 3.1 are respectively provided on the outer walls of both sides of the annular housing 3 at the positions corresponding to the insertion holes 1.1.3. Several water spray holes 3.2 are opened on the inner circumferential wall of the annular housing 3.

[0031] The connecting pipe 6 includes a threaded sleeve 6.1 and a water inlet pipe 6.2, one end of which is connected to the side wall of the threaded sleeve 6.1 and the other end of which is connected to the output end of the water pump 4.

[0032] The top and bottom ends of the water supply pipe 2 are respectively rotatably fitted with threaded joints 2.1. The threaded joint 2.1 at the bottom end of the water supply pipe 2 is threadedly fitted with the threaded sleeve 6.1, and the threaded joint 2.1 at the top end of the water supply pipe 2 is threadedly fitted with the water inlet port 3.1.

[0033] The electric heating plate 5 is located at the bottom of the inner cavity of the disc-shaped shell 1.1.

[0034] In summary, when frost forms on the surface of the outdoor coil of the air source heat pump, the electric heating plate 5 heats the water inside the disc-shaped housing 1.1. The water pump 4 pumps the hot water sequentially through the water inlet pipe 6.2, the threaded sleeve 6.1, and the water supply pipe 2 into the annular housing 3. The hot water inside the annular housing 3 is sprayed out from the spray hole 3.2. Because the inner circumferential wall of the annular housing 3 has an arc-shaped convex structure, it can spray hot water all over the outdoor coil, thereby achieving the defrosting effect. The sprayed water falls downwards, is collected by the water collection hood 1.2, and flows back into the disc-shaped housing 1.1 through the water inlet 1.1, realizing the recycling of water. The water in the disc-shaped housing 1.1 can be drained through the drain valve 7 when the defrosting device is not in use.

[0035] 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.

[0036] 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. An automatic defrosting device for air source heat pumps, characterized in that, include: The base (1) includes a disc-shaped housing (1.1) located directly below the outdoor coil of the air source heat pump and a water collection cover (1.2) connected to the outer edge of the top surface of the disc-shaped housing (1.1). The top surface of the disc-shaped housing (1.1) is provided with a plurality of water inlet holes (1.1.1) and the top surface of the disc-shaped housing (1.1) is provided with a socket (1.1.3) near the edge. Water supply pipe (2), the bottom end of which is inserted into the socket (1.1.3); An annular shell (3) is fitted around the outdoor coil of the air source heat pump, and the annular shell (3) is fitted to the top of the water supply pipe (2). The inner circumferential wall of the annular shell (3) is provided with several water spray holes (3.2). A water pump (4), the input end of which is connected to the bottom of the inner cavity of the disc-shaped housing (1.1); An electric heating plate (5) is disposed at the bottom of the inner cavity of the disc-shaped housing (1.1); A connecting pipe fitting (6) is located inside the disc-shaped housing (1.1) and is used to connect the bottom end of the water supply pipe (2) to the output end of the water pump (4).

2. The automatic defrosting device for air source heat pumps according to claim 1, characterized in that: The annular shell (3) is fitted around the middle of the outdoor coil of the air source heat pump. The inner circumferential wall of the annular shell (3) has an arc-shaped convex structure. The outer wall of the annular shell (3) is connected to a water inlet port (3.1) that is fitted and matched with the top of the water supply pipe (2).

3. The automatic defrosting device for air source heat pumps according to claim 1, characterized in that: The disc-shaped housing (1.1) has a sleeve hole (1.1.2) in the middle, and the water pump (4) is fitted into the sleeve hole (1.1.2).

4. The automatic defrosting device for air source heat pumps according to claim 2, characterized in that: The disc-shaped housing (1.1) has two symmetrical insertion holes (1.1.3) near the edge on its top surface, and the outer walls on both sides of the annular housing (3) have water inlet ports (3.1) corresponding to the positions of the insertion holes (1.1.3).

5. The automatic defrosting device for air source heat pump temperature and humidity control according to claim 2, characterized in that: The connecting pipe fitting (6) includes a threaded sleeve (6.1) that fits into the bottom end of the water supply pipe (2) and a water inlet pipe (6.2) with one end connected to the side wall of the threaded sleeve (6.1) and the other end connected to the output end of the water pump (4).

6. The automatic defrosting device for air source heat pump temperature and humidity control according to claim 5, characterized in that: The top and bottom ends of the water supply pipe (2) are respectively rotatably fitted with threaded joints (2.1). The threaded joint (2.1) at the bottom end of the water supply pipe (2) is threadedly fitted and matched with the threaded sleeve (6.1). The threaded joint (2.1) at the top end of the water supply pipe (2) is threadedly fitted with the water inlet port (3.1).

7. The automatic defrosting device for air source heat pumps according to claim 1, characterized in that: The bottom of the side wall of the disc-shaped housing (1.1) is provided with a drain connector (1.3), and a drain valve (7) is installed on the outer end of the drain connector (1.3).

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