PTC heater for condensate metal pipe

Abstract

A PTC heater for a condensate metal pipe comprises a PTC heating component disposed outside the condensate metal pipe to heat the condensate therein; a heat-conducting bracket, the condensate metal pipe being passed through the center of the heat-conducting bracket, and the PTC heating component disposed on the heat-conducting bracket outside the condensate metal pipe; an insulator disposed between the condensate metal pipe and the heat-conducting bracket to insulate the PTC heating component from the condensate metal pipe; and a thermostat secured to the top of the heat-conducting bracket via a snap and electrically connected to the PTC heating component for controlling the start, stop, and temperature of the PTC heating component. The present invention is used to generate hot air in an air conditioner and can directly heat the condensate pipe of the air conditioner. It occupies little space within the air conditioner, has a simple structure, and is low in cost and production.

Description

Technical Field

[0001] The invention relates to the technical field of electric heating, in particular to a PTC heater for a condensate metal pipe of an air conditioner, which is used to heat the condensate metal pipe to generate hot air. Background Art

[0002] Air conditioners are a common electrical appliance widely used in homes, public facilities, offices, and other places to regulate indoor temperature. Some air conditioners have both cooling and heating functions. For air conditioners with heating functions, the heating function is achieved by installing an auxiliary heater at the air outlet. Before the air conditioner is started, the auxiliary heater generates heat to produce warm air. After the auxiliary heater has heated for about 10 minutes and the air conditioner's compressor is preheated, the auxiliary heater stops operating and the compressor switches to heating the refrigerant, heating the condensate in the condensate metal pipe and blowing warm air out of the air outlet. Obviously, because traditional air conditioners with heating functions are equipped with an auxiliary heater to heat the air before the air conditioner compressor is preheated, an additional heating system is added to the air conditioner. This not only takes up space within the air conditioner but also increases control and production costs, which is clearly unreasonable and impractical. Summary of the Invention

[0003] The present invention aims to solve the above problems and provide a PTC heater for condensate metal tube which can directly heat the condenser tube of the air conditioner without adding an auxiliary heater, occupies little space in the air conditioner, has a simple structure, and has low use and production costs.

[0004] To achieve the above object, the present invention provides a PTC heater for a condensate metal pipe, the PTC heater comprising:

[0005] A PTC heating component is arranged outside the condensate metal tube to heat the condensate in the condensate metal tube;

[0006] A first heat-conducting bracket or a second heat-conducting bracket, wherein the condensate metal pipe is placed in the center of the first heat-conducting bracket or the second heat-conducting bracket, and the PTC heating component is arranged on the first heat-conducting bracket or the second heat-conducting bracket outside the condensate metal pipe;

[0007] an insulator, which is provided between the condensate metal pipe and the first heat-conducting bracket or the second heat-conducting bracket to insulate the PTC heating component from the condensate metal pipe;

[0008] The thermostat is fixed to the top of the first heat-conducting bracket or the second heat-conducting bracket through the first clip or the second clip, and is electrically connected to the PTC heating component, and is used to control the start, stop and temperature of the PTC heating component.

[0009] The first heat-conducting bracket is an integrally formed strip-shaped block, on which a first metal tube accommodating hole is provided. The upper and lower sides of the first metal tube accommodating hole are respectively provided with PTC heating component accommodating holes.

[0010] The second heat-conducting bracket is a strip-shaped block formed by connecting an upper bracket with an upper metal tube accommodating groove and a lower bracket with a lower metal tube accommodating groove. The upper metal tube accommodating groove and the lower metal tube accommodating groove are matched to form the second metal tube accommodating hole, and PTC heating component accommodating holes are respectively provided on the upper and lower sides of the second metal tube accommodating hole.

[0011] The first metal tube accommodating hole or the second metal tube accommodating hole and the PTC heating component accommodating hole pass through from one end to the other end along the length direction of the first heat-conducting bracket or the second heat-conducting bracket.

[0012] The cross section of the first metal tube accommodating hole or the second metal tube accommodating hole is circular, elliptical or rectangular, and the cross section of the PTC heating component accommodating hole is rectangular.

[0013] The PTC heating component includes two groups of PTC heating sheets, electrode sheets and fixed sleeves. Each group of electrode sheets is located on the upper and lower sides of each PTC heating sheet. The two groups of PTC heating sheets and electrode sheets are strip-shaped sheets, which are respectively accommodated in the fixed sleeves. The two fixed sleeves are respectively accommodated in the two PTC heating component accommodating holes on the first heat-conducting bracket or the second heat-conducting bracket.

[0014] The insulator is insulating paper, which is wrapped around the outside of the condensate metal pipe.

[0015] The temperature controller includes a box body, a temperature control switch and a temperature sensor. The temperature sensor is electrically connected to the PTC heating component and the temperature control switch respectively. The temperature control switch is connected to a power supply. The temperature control switch and the temperature sensor are placed in the box body.

[0016] The first clip and the second clip are elastic U-shaped clips corresponding to the shapes of the first heat-conducting bracket and the second heat-conducting bracket respectively. The open end of the first clip is provided with an inward-turned folded edge, and its open end is clamped to the bottom of the first heat-conducting bracket. The open end of the second clip has an inward-turned bevel, and the bevel is clamped to the upper outer side of the second heat-conducting bracket.

[0017] The first buckle and the second buckle are made of metal material or engineering plastic.

[0018] The present invention contributes significantly to solving the problems inherent in the prior art. By installing a PTC heater on the air conditioner's condensate metal pipe, it directly heats the air entering the air conditioner through the heated condenser pipe, producing warm air that is blown out. Without adding an auxiliary heater, the present invention cleverly utilizes the air conditioner's inherent structure to achieve the air conditioning's warming function. This not only effectively avoids occupying internal space within the air conditioner, but also reduces operational and production costs. The present invention also boasts a simple structure and is readily adaptable for widespread use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of embodiment 1 of the present invention.

[0020] Figure 2 It is a schematic exploded perspective view of the components of Example 1 of the present invention.

[0021] Figure 3 It is a side view of the thermal conductive bracket of embodiment 1 of the present invention.

[0022] Figure 4 This is a cross-sectional view of Example 1 of the present invention.

[0023] Figure 5 It is a stereoscopic schematic diagram of embodiment 2 of the present invention.

[0024] Figure 6 It is a side view of the thermal conductive bracket of embodiment 2 of the present invention.

[0025] Figure 7 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0026] The following examples are provided to further explain and illustrate the present invention and do not constitute any limitation to the present invention.

[0027] See Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The PTC heater for a condensate metal tube of the present invention is used in an air conditioner with a hot air function, enabling the air conditioner to generate hot air. The PTC heater includes a PTC heating component 10, a condensate metal tube 20, an integrally formed first heat-conducting bracket 30A, a second heat-conducting bracket 30B connected to each other, an insulator 40, a thermostat 50, a first clip 61, and a second clip 62. The PTC heating component 10 is disposed outside the condensate metal tube 20 via the first heat-conducting bracket 30A or the second heat-conducting bracket 30B. Under the control of the thermostat 50, the condensate metal tube 20 is heated to generate the hot air required by the air conditioner. The present invention is described in more detail below with reference to the accompanying drawings and examples.

[0028] Example 1

[0029] like Figure 1 、 Figure 2 、 Figure 4 As shown, a PTC heating assembly 10 is installed outside the condensate metal tube 20 of the air conditioner to heat the condensate in the condensate metal tube. In this embodiment, the condensate metal tube 20 is a copper tube filled with circulating condensate. The shape of the condensate metal tube corresponds to the condensate metal tube in the air conditioner, and its cross-section can be circular, elliptical, or rectangular. In this embodiment, the cross-section of the condensate metal tube is circular. When used in the air conditioner, the condensate metal tube of the present invention can replace the condensate metal tube of the corresponding length in the air conditioner, and its ends are welded to the ends of the air conditioner condensate metal tube. The PTC heating assembly 10 includes two groups of PTC heating sheets 11, electrode sheets 12, and a fixing sleeve 13. The two groups of PTC heating sheets 11 and electrode sheets 12 are strip-shaped sheets, and the PTC heating sheets 11 are ceramic PTC heating sheets. The two electrode sheets 12 in each group of PTC heating sheets are located on the upper and lower sides of each PTC heating sheet 11. The electrode sheets 12 are connected to an external power supply via wires. Each set of PTC heating sheet 11 and electrode sheet 12 is respectively accommodated in the fixing sleeve 13, which is made of insulating plastic material, such as polyphenylene sulfide plastic. The two fixing sleeves 13 are respectively accommodated in the two PTC heating component accommodating holes 30C on the heat conductive bracket 30.

[0030] In this embodiment, the PTC heating component 10 and the condensate metal pipe 20 are arranged on the first heat-conducting bracket 30A or the second heat-conducting bracket 30B. Figure 2 、 Figure 3As shown, in this embodiment, the first heat-conducting bracket 30A is an integrally formed strip-shaped block, and a horizontal first metal tube accommodating hole 30A1 is provided in the center thereof, and its shape corresponds to the shape of the condensate metal tube 20. In this embodiment, the cross-section of the first metal tube accommodating hole 30A1 is circular. The upper and lower sides of the first metal tube accommodating hole 30A1 are respectively provided with a PTC heating component accommodating hole 30C, and the cross-section of the PTC heating component accommodating hole 30C is rectangular. The first metal tube accommodating hole 30A1 and the PTC heating component accommodating hole 30C pass through from one end to the other end along the length direction of the heat-conducting bracket 30. The condensate metal tube 20 is inserted into the first metal tube accommodating hole 30A1 of the first heat-conducting bracket 30A, and the PTC heating component 10 is a heating body, which is inserted into the PTC heating component accommodating hole 30C of the first heat-conducting bracket 30A. The condensate metal tube 20 is the heated object carrying condensate and is separated from the first thermally conductive bracket 30A by an insulator 40. In this embodiment, the insulator 40 is insulating paper, which is wrapped around the outside of the condensate metal tube 20 to electrically insulate the PTC heating component 10 from the condensate metal tube 20. Heat generated by the PTC heating component 10 is transferred to the condensate metal tube 20 through the first thermally conductive bracket 30A, heating the condensate metal tube 20.

[0031] like Figure 1 、 Figure 2 、 Figure 4 As shown, a thermostat 50 is provided on the first heat-conducting bracket 30A for controlling the temperature of the PTC heating component 10. The thermostat 50 is fixed to the top of the first heat-conducting bracket 30A by a first buckle 61. The thermostat 50 is electrically connected to the PTC heating component 10 and is connected to an external power supply through a wire to control the start, stop and temperature of the PTC heating component 10. The thermostat 50 includes a box body 51, a temperature control switch 52 and a temperature sensor 53. The circuit principle is as follows: Figure 6 As shown, R1 and R2 are PTC heating sheets 11, Rt is a temperature sensor 53, and KM is a temperature control switch 52. The temperature sensor 53 is electrically connected to the PTC heating component 10 and the temperature control switch 52, respectively. The temperature sensor 53 is used to detect the temperature of the first heat-conducting bracket 30A, and the temperature control switch 52 controls the start and stop of the PTC heating component 10 according to the set temperature. The PTC heating component 10 is electrically connected to the temperature sensor 53 and the power supply, and the temperature control switch 52 is electrically connected to the temperature sensor 53 and connected to the power supply through a wire. The temperature control switch 52 and the temperature sensor 53 are placed in the box body 51, and the box body 51 is fixed to the top of the first heat-conducting bracket 30A by a first buckle 61.

[0032] like Figure 1 、 Figure 2As shown, in this embodiment, the first clip 61 is a resilient U-shaped clip that corresponds to the shape of the first thermally conductive bracket 30A and is made of metal or engineering plastic. The open end of the first clip 61 has an inward-turning folded edge. Its closed end presses against the thermostat housing 51, while its open end engages the bottom of the first thermally conductive bracket 30A, securing the thermostat 50 to the thermally conductive bracket 30A.

[0033] Example 2

[0034] The basic structure of the PTC heater for the condensate metal tube of the present invention is the same as that of Example 1. The difference is the structure of the heat-conducting bracket and the buckle. Figure 5 、 Figure 6 As shown, in this embodiment, the second heat-conducting bracket 30B is a strip-shaped block formed by the connection of an upper bracket 30B01 and a lower bracket 30B02. The upper bracket 30B01 is provided with an upper metal tube accommodating groove, while the lower bracket 30B02 is provided with a lower metal tube accommodating groove. The upper and lower metal tube accommodating grooves align to form the second metal tube accommodating hole 30B1. PTC heating component accommodating holes 30C are provided on the upper and lower sides of the second metal tube accommodating hole 30B1.

[0035] The temperature controller 50 is fixed to the top of the second heat-conducting bracket 30B by the second buckle 62. Figure 5 、 Figure 6 As shown, the second clip 62 is an elastic U-shaped clip corresponding to the shape of the second heat-conducting bracket 30B, and its open end is provided with an inward bevel. The closed end of the second clip 62 is pressed against the box body 51 of the thermostat, and its bevel is clamped to the upper outer side of the second heat-conducting bracket 30B to fix the thermostat 50 on the second heat-conducting bracket 30B.

[0036] Although the present invention is disclosed through the above embodiments, the protection scope of the present invention is not limited thereto. Without departing from the concept of the present invention, any deformation or replacement of the above components shall fall within the scope of the claims of the present invention.

Claims

1. A PTC heater for a condensate metal tube, characterized in that: The PTC heater includes: A PTC heating component (10) is arranged outside the condensate metal tube (20) and heats the condensate in the condensate metal tube; A first heat-conducting bracket (30A) or a second heat-conducting bracket (30B), the condensate metal tube (20) is placed in the center of the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B), the PTC heating component (10) is arranged on the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B) outside the condensate metal tube, and the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B) is provided with an arc-shaped extrusion deformation arc along the length direction on both sides perpendicular to the PTC heating component; an insulator (40) disposed between the condensate metal tube (20) and the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B) to insulate the PTC heating component (10) from the condensate metal tube (20); a thermostat (50) fixed to the top of the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B) via a first clip (61) or a second clip (62), and electrically connected to the PTC heating component (10), for controlling the start, stop, and temperature of the PTC heating component (10); The insulator (40) is insulating paper, which is wrapped around the outside of the condensate metal tube (20). The thermostat (50) includes a box body (51), a temperature control switch (52) and a temperature sensor (53). The temperature sensor (53) is electrically connected to the PTC heating component (10) and the temperature control switch (52), respectively. The temperature control switch (52) is connected to a power supply. The temperature control switch (52) and the temperature sensor (53) are placed in the box body (51). The first clip (61) and the second clip (62) are elastic U-shaped clips corresponding to the shapes of the first heat-conducting bracket (30A) and the second heat-conducting bracket (30B), respectively. The open end of the first clip (61) is provided with an inward-turned folding edge, and the open end is clamped to the bottom of the first heat-conducting bracket (30A). The open end of the second clip (62) is provided with an inward-turned bevel, and the bevel is clamped to the upper outer side of the second heat-conducting bracket (30B).

2. The PTC heater for condensate metal pipe according to claim 1, characterized in that: The first heat-conducting bracket (30A) is an integrally formed strip-shaped block, on which a first metal tube accommodating hole (30A1) is provided. PTC heating component accommodating holes (30C) are respectively provided on the upper and lower sides of the first metal tube accommodating hole (30A1).

3. The PTC heater for the condensate metal tube according to claim 2, characterized in that: The second heat-conducting bracket (30B) is a strip-shaped block formed by coupling an upper bracket (30B01) provided with an upper metal tube accommodating groove and a lower bracket (30B02) provided with a lower metal tube accommodating groove. The upper metal tube accommodating groove and the lower metal tube accommodating groove are coupled to form a second metal tube accommodating hole (30B1). PTC heating component accommodating holes (30C) are respectively provided on the upper and lower sides of the second metal tube accommodating hole (30B1).

4. The PTC heater for the condensate metal pipe according to claim 3, characterized in that: The first metal tube accommodating hole (30A1) or the second metal tube accommodating hole (30B1) and the PTC heating component accommodating hole (30C) pass through from one end to the other end along the length direction of the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B).

5. The PTC heater for the condensate metal pipe according to claim 3, characterized in that: The cross-section of the first metal tube accommodating hole (30A1) or the second metal tube accommodating hole (30B1) is circular, elliptical or rectangular, and the cross-section of the PTC heating component accommodating hole (30C) is rectangular.

6. The PTC heater for condensate metal pipe according to claim 1, characterized in that: The PTC heating component (10) comprises two groups of PTC heating sheets (11), two groups of electrode sheets (12) and two groups of fixing sleeves (13), each group of electrode sheets (12) being located on the upper and lower sides of each PTC heating sheet (11), each group of PTC heating sheets (11) and each group of electrode sheets (12) being strip-shaped sheets, which are respectively accommodated in the fixing sleeves (13), and the two fixing sleeves (13) are respectively accommodated in two PTC heating component accommodating holes (30C) on the first heat-conducting bracket (30A) or the second heat-conducting bracket (30B).

7. The PTC heater for condensate metal pipe according to claim 1, characterized in that: The first buckle (61) and the second buckle (62) are made of metal material or engineering plastic.

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