Self-temperature-limiting heating device of compressor crank

Abstract

A self-temperature-limiting heating device of a compressor crank comprises PTC heating pieces, two wires and a silica gel shell, the silica gel shell has a certain length and width, the PTC heating pieces are evenly distributed along a straight line at certain intervals, the two wires are electrically connected with the PTC heating pieces respectively, the PTC heating pieces and the wires are pre-buried in the silica gel shell, and the wires extend out of the silica gel shell. The self-limiting characteristic of the PTC heating piece is utilized, the PTC heating piece is embedded in the silica gel shell, the compressor is effectively protected, and installation or replacement is convenient.

Description

Technical Field

[0001] The utility model relates to a device for a heat pump compressor, in particular to a heating device for a compressor. Background Art

[0002] In the current prior art, when an air conditioner or a heat pump unit starts at low temperature, the compressor needs to be preheated to ensure the effective lubrication of the lubricating oil in the compressor to the crankshaft and to ensure the evaporation of the liquid refrigerant inside the compressor before starting; there are currently two types of solutions in the industry: 1. Wrap the compressor shell with an electric heating tape for preheating; 2. Use the internal motor coil of the compressor for preheating; for the first solution: when the power of the electric heating tape is configured to be small, the preheating time is long; when the electric heating power is configured to be large, it is easy to cause the electric heating tape to fuse and be damaged; for the second solution: it is easy to cause the compressor to age (coils, magnetic fields), and once it is damaged, the compressor needs to be replaced, resulting in high after-sales costs. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a self-limiting temperature heating device for a compressor crank, which has the characteristics of self-limiting temperature, large low-temperature output power, and small high-temperature output power.

[0004] The utility model is realized as follows: a self-limiting temperature heating device for a compressor crank, which is characterized in that: it includes a PTC heating sheet, two wires, and a silica gel shell.

[0005] The silica gel shell has a certain length and width.

[0006] The PTC heating sheets are evenly distributed at a certain distance along a straight line, and the two wires are electrically connected to the PTC heating sheets respectively. The PTC heating sheets and the wires are embedded in the silica gel shell and the wires extend out of the silica gel shell.

[0007] The self-limiting temperature heating device for a compressor crank is characterized in that: the wires are welded to the PTC heating sheets.

[0008] The self-limiting temperature heating device for a compressor crank is characterized in that: the PTC heating sheets are connected in parallel.

[0009] The self-limiting temperature heating device for a compressor crank is characterized in that: the wires are metal wires or metal sheets.

[0010] The self-limiting temperature heating device for a compressor crank is characterized in that: it further includes snap buttons, with a male snap button provided at one end of the silica gel shell and a female snap button provided at the other end.

[0011] The self-limiting temperature heating device for a compressor crank of the utility model utilizes the self-limiting temperature characteristic of the PTC heating sheet and is embedded in the silica gel shell, effectively protecting the compressor and being convenient for installation or replacement. Brief Description of the Drawings

[0012] Figure 1 is the front view of the present utility model.

[0013] Figure 2 is Figure 1 the A - A view of Detailed Description of the Preferred Embodiment

[0014] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0015] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0016] As Figure 1 shown, a self - limiting temperature heating device for a compressor crank includes a PTC heating sheet 1, two wires 2, and a silica gel shell 3.

[0017] The silica gel shell 3 has a certain length and width.

[0018] The PTC heating sheets 1 are evenly distributed at a certain interval along a straight line. The two wires 2 are respectively electrically connected to the PTC heating sheets 1. The PTC heating sheets 1 and the wires 2 are embedded in the silica gel shell 3 and the wires 2 extend out of the silica gel shell 3.

[0019] The wire 2 is welded to the PTC heating sheet 1. The wire 2 is a metal wire or a metal sheet.

[0020] The PTC heating sheets 1 are connected in parallel.

[0021] As a further improvement of the present utility model: It further includes snap buttons. One end of the silica gel shell 3 is provided with a male snap button and the other end is provided with a female snap button.

[0022] When the present utility model is in use, the silica gel shell 3 is wound around the outer shell of the compressor and is opposite to the crank part. At low temperatures, the heating belt has a large output power and a shorter preheating time; the heating belt has self - limiting temperature, ensuring its service life and the safety of the unit; at high temperatures, the heating belt has a low output power, reducing the energy consumption of the unit during operation.

[0023] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A self-limiting temperature heating device for a compressor crank, characterized in that: Including PTC heating sheet, two wires and silicone shell, The silicone shell has a certain length and width. The PTC heating sheets are evenly distributed along a straight line at a certain distance, two wires are electrically connected to the PTC heating sheets respectively, the PTC heating sheets and the wires are pre-buried in the silicone shell and the wires extend out of the silicone shell.

2. The self-limiting temperature heating device for a compressor crank according to claim 1, characterized in that: The wire is welded to the PTC heating sheet.

3. The self-limiting temperature heating device for a compressor crank according to claim 1, characterized in that: The PTC heating sheets are connected in parallel.

4. The self-limiting temperature heating device for a compressor crank according to claim 1, characterized in that: The conducting wire is a metal wire or a metal sheet.

5. A self-limiting temperature heating device for a compressor crank according to claim 1, 2, 3 or 4, characterized in that: It also includes snap buttons, with a male snap button at one end of the silicone shell and a female snap button at the other end.

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