Air source heat pump anti-freezing device

Abstract

The utility model relates to the technical field of air source heat pumps, in particular to an air source heat pump anti-freezing device, which is characterized in that the bottom of the side wall of an air source heat pump outer unit is provided with a threaded hole, the threaded hole is sleeved with a pipe joint in a threaded manner, the inner end of the pipe joint is sleeved with a heat preservation ring body, and a cylindrical shell with the inner end matched with the heat preservation ring body in a sleeved manner is arranged outside the pipe joint; a heat preservation sleeve is sleeved with a cavity between the pipe connector and the cylindrical shell, the outer end of the pipe connector is sleeved with an external thread connector in a threaded mode, the middle of the external thread connector is sleeved with a locking ring in a threaded mode, and the outer end of the external thread connector is sleeved with a water passing pipe in a threaded mode. The problem that the water pipe connector of the air source heat pump outdoor unit is not convenient to carry out anti-freezing treatment is well solved.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump technology, specifically to an air source heat pump antifreeze device. Background Technology

[0002] An air source heat pump is an energy-saving device that uses high-grade energy to move heat from a low-grade heat source, air, to a high-grade heat source.

[0003] When air source heat pumps are used in cold weather, the pipes connected to the outdoor unit are prone to freezing. This is especially true at pipe joints, where insulation is difficult to apply, thus affecting the performance of the air source heat pump. Utility Model Content

[0004] The purpose of this utility model is to provide an air source heat pump antifreeze device to solve the problem that it is not convenient to carry out antifreeze treatment at the water pipe joint of the outdoor unit of the air source heat pump.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air source heat pump antifreeze device, comprising an air source heat pump outdoor unit, a threaded hole at the bottom of the side wall of the air source heat pump outdoor unit, a pipe joint threaded into the threaded hole, an insulation ring fitted around the inner end of the pipe joint, a cylindrical outer shell with its inner end fitted and matched to the insulation ring around the pipe joint, an insulation sleeve fitted inside the cavity between the pipe joint and the cylindrical outer shell, an external threaded connector threaded onto the outer end of the pipe joint, a locking ring threaded onto the middle part of the external threaded connector, and a water pipe threaded onto the outer end of the external threaded connector.

[0006] Preferably, the pipe fitting includes a short pipe and a limiting ring fixedly sleeved on the short pipe near its inner end. The outer peripheral wall of the short pipe located inside the limiting ring is provided with an external thread that matches the threaded hole. The inner peripheral wall of the outer end of the short pipe is provided with an internal thread that matches the threaded fitting of the external threaded joint. The heat insulation ring is fitted onto the limiting ring.

[0007] Preferably, the outer wall of the insulation ring is provided with an annular protrusion in the center, the inner peripheral wall of the inner end of the cylindrical shell is provided with an annular slot that fits and matches the insulation ring, and the outer end of the cylindrical shell is provided with a connecting ring that fits and matches the annular slot.

[0008] Preferably, the inner end face of the insulation sleeve is provided with an annular groove that matches the locking ring.

[0009] Preferably, the outer edge of the locking ring is provided with multiple slots along the circumferential direction.

[0010] Preferably, the inner circumferential walls at both ends of the water pipe are respectively provided with internal threads that match the threaded connection of the external threaded joint.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model relates to an air source heat pump antifreeze device that facilitates the installation of a heat preservation mechanism at the water pipe connection of the outdoor unit of the air source heat pump, thereby improving the antifreeze performance of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the outdoor unit of the air source heat pump of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the pipe connector of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the heat-insulating ring of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the cylindrical outer shell of this utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the insulation sleeve of this utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the external threaded connector of this utility model;

[0020] Figure 8 This is a three-dimensional structural diagram of the locking ring of this utility model;

[0021] Figure 9 This is a three-dimensional structural diagram of the water pipe of this utility model.

[0022] In the diagram: 1-Air source heat pump outdoor unit; 1.1-Threaded hole;

[0023] 2-Pipe fitting; 2.1-Short pipe; 2.1.1-External thread; 2.1.2-Internal thread one; 2.2-Limiting ring;

[0024] 3-Insulation ring; 3.1-Annular protrusion;

[0025] 4-Cylindrical outer casing; 4.1-Annular slot; 4.2-Connecting ring;

[0026] 5-Insulation sleeve; 5.1-Annular groove;

[0027] 6-External threaded connector;

[0028] 7-Locking ring; 7.1-Slot;

[0029] 8-Water pipe; 8.1-Internal thread two. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-9 This utility model provides a technical solution: an air source heat pump antifreeze device, including an air source heat pump outdoor unit 1, and a threaded hole 1.1 is provided at the bottom of the side wall of the air source heat pump outdoor unit 1.

[0032] The pipe fitting 2 includes a short pipe 2.1 and a limiting ring 2.2 fixedly sleeved on the short pipe 2.1 near its inner end. The outer peripheral wall of the short pipe 2.1 located inside the limiting ring 2.2 is provided with an external thread 2.1.1 that matches the threaded hole 1.1. The inner peripheral wall of the outer end of the short pipe 2.1 is provided with an internal thread 2.1.2. The external thread 2.1.1 at the inner end of the short pipe 2.1 is screwed into the threaded hole 1.1 until the limiting ring 2.2 is close to the outer wall of the air source heat pump outdoor unit 1 to complete the assembly of the pipe fitting 2 and the air source heat pump outdoor unit 1.

[0033] The inner end of the external threaded connector 6 is assembled with the pipe connector 2 via the internal thread 2.1.2.

[0034] The insulation ring 3 is fitted onto the limiting ring 2.2, and the inner wall of the insulation ring 3 is pressed tightly against the outer wall of the outdoor unit 1 of the air source heat pump.

[0035] The insulation ring 3 is fitted onto the outer end of the short pipe 2.1, ensuring that the inner wall of the insulation ring 3 is flush against the outer wall of the limiting ring 2.2. An annular groove 5.1 is provided in the center of the inner end face of the insulation sleeve 5. An annular protrusion 3.1 is provided in the center of the outer wall of the insulation ring 3, meaning that when the insulation sleeve 5 is assembled, the inner end face of the insulation sleeve 5 is flush against the outer wall of the annular protrusion 3.1. The insulation sleeve 5 is made of insulating materials such as rubber-plastic sponge, polyurethane foam, or rock wool.

[0036] A locking ring 7 is threaded into the middle of the external threaded connector 6. Tightening the locking ring 7 presses its inner wall against the outer wall of the inner insulation sleeve 5, thus achieving the effect of pressing and positioning the insulation ring body 3. To facilitate tightening the locking ring 7, multiple slots 7.1 are provided circumferentially along its outer edge, allowing it to be tightened using calipers or similar tools. Furthermore, an annular groove 5.1 fits snugly into the locking ring 7, ensuring that when the insulation sleeve 5 is fitted onto the outside of the locking ring 7, the locking ring 7 fits perfectly within the annular groove 5.1, guaranteeing that the end faces of adjacent insulation sleeves 5 can be fitted together.

[0037] The inner circumferential walls at both ends of the water pipe 8 are respectively provided with internal threads 8.1 that match the threaded connection of the external threaded connector 6. That is, the water pipe 8 can be extended by sequentially connecting the external threaded connector 6 to the outer end of the short pipe 2.1.

[0038] The cylindrical outer shell 4 is fitted onto the outside of the insulation sleeve 5. The inner circumferential wall of the inner end of the cylindrical outer shell 4 has an annular slot 4.1 that fits into the insulation ring 3, and the outer end of the cylindrical outer shell 4 has a connecting ring 4.2 that fits into the annular slot 4.1. That is, the cylindrical outer shell 4 can be extended by sequentially connecting the annular slot 4.1 and the connecting ring 4.2.

[0039] 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.

[0040] 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 air source heat pump antifreeze device, comprising an air source heat pump outdoor unit (1), characterized in that: The bottom of the side wall of the outdoor unit (1) of the air source heat pump is provided with a threaded hole (1.1). A pipe joint (2) is threaded into the threaded hole (1.1). An insulation ring (3) is fitted on the outer side of the inner end of the pipe joint (2). A cylindrical outer shell (4) is provided on the outer side of the pipe joint (2) and its inner end is fitted with the insulation ring (3). An insulation sleeve (5) is fitted in the cavity between the pipe joint (2) and the cylindrical outer shell (4). An external threaded joint (6) is threaded into the outer end of the pipe joint (2). A locking ring (7) is threaded into the middle of the external threaded joint (6). A water pipe (8) is threaded into the outer end of the external threaded joint (6).

2. The air source heat pump antifreeze device according to claim 1, characterized in that: The pipe fitting (2) includes a short pipe (2.1) and a limiting ring (2.2) fixedly sleeved on the short pipe (2.1) near its inner end. The outer peripheral wall of the short pipe (2.1) located inside the limiting ring (2.2) is provided with an external thread (2.1.1) that matches the threaded hole (1.1). The inner peripheral wall of the outer end of the short pipe (2.1) is provided with an internal thread (2.1.2) that matches the threaded fitting of the external threaded connector (6). The heat insulation ring (3) is fitted onto the limiting ring (2.2).

3. The air source heat pump antifreeze device according to claim 1, characterized in that: The outer wall of the heat-insulating ring (3) is provided with an annular protrusion (3.1) in the center, the inner wall of the inner end of the cylindrical shell (4) is provided with an annular slot (4.1) that fits into the heat-insulating ring (3), and the outer end of the cylindrical shell (4) is provided with a connecting ring (4.2) that fits into the annular slot (4.1).

4. The air source heat pump antifreeze device according to claim 1, characterized in that: The inner end face of the insulation sleeve (5) is provided with an annular groove (5.1) that matches the locking ring (7).

5. The air source heat pump antifreeze device according to claim 1, characterized in that: The outer edge of the locking ring (7) is provided with multiple slots (7.1) along the circumferential direction.

6. The air source heat pump antifreeze device according to claim 1, characterized in that: The inner circumferential walls at both ends of the water pipe (8) are respectively provided with internal threads (8.1) that are matched with the threaded sleeve of the external threaded connector (6).

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