Air Conditioner

Abstract

The present invention provides an air conditioner, including a housing, a heating component is arranged in the housing, and the heating component is equipped with a protection component, the protection component includes: a protector, which is arranged at a position where the temperature radiated by the heating component can be directly sensed; and a fuse unit, which includes a first fuse and a second fuse, and the first fuse and the second fuse are arranged at different positions relative to the heating component, so that the first fuse and the second fuse sense the temperature of different areas related to the heating component; wherein the protector, the first fuse and the second fuse are connected in series to the power supply circuit of the heating component, so that: when any one of them reaches the operating temperature, the heating component can be stopped. By adding a fuse, it is possible to seek to more comprehensively meet the requirements of the electric heating abnormality test of the air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment, and in particular to an air conditioner. Background Art

[0002] In the process of developing an air conditioner with electric heating function, an electric heating abnormality test is required according to the standard. The purpose of the electric heating abnormality test is mainly to ensure that the developed air conditioner will not be damaged or cause extreme phenomena such as fire due to user's wrong operation, thereby causing losses to the user. For example, the user's wrong operation may include but is not limited to: the user accidentally uses curtains / clothing to block the air supply and / or return air outlet of the air conditioner with the electric heating function running. Such wrong operation will cause heat to accumulate inside the air conditioner and cannot be dissipated in time, so that the temperature inside the air conditioner continues to rise. After it rises to a certain degree or the high temperature state continues for a certain period of time, the above-mentioned air conditioner may be damaged or extreme phenomena such as fire may occur.

[0003] At present, in order to ensure the conduct of abnormal electric heating test, a dual protection mechanism consisting of a protector and a fuse is adopted. For example, the invention patent application (CN109780637A) discloses a heating component, an electric heating device and a ceiling machine, wherein the heating component includes a bracket, a PTC heater, a mounting frame, a first fuse, and a thermostat, wherein the bracket is used to be mounted on a mounting plate, the PTC heater is mounted on the bracket, the mounting frame is mounted on the bracket and is located on the surface of the PTC heater, the first fuse and the thermostat are mounted on the mounting frame, and the first fuse and the thermostat are both electrically connected to the PTC heater. In this way, when the PTC heater reaches the protection temperature, the thermostat is disconnected, when the PTC heater is reduced to the reset temperature, the thermostat is reset, when the PTC heater reaches the fuse temperature, the first fuse is melted, the thermostat provides the first level of protection for the PTC heater, and the first fuse provides the second level of protection for the PTC heater.

[0004] The original intention of the above setting is double protection, however, in the case of failure of the protector, the fuse cannot provide timely protection. Moreover, even if the fuse works, the air supply temperature of the air conditioner has often reached the high temperature limit of ordinary machines, so the machine or its components have been burned and cannot be used again.

[0005] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0006] Technical issues

[0007] In view of this, the technical problem to be solved by the present invention is to provide an air conditioner with a new protection mechanism.

[0008] Solution

[0009] The present invention provides an air conditioner, the air conditioner comprises an indoor part, the indoor part comprises a shell, the shell has a return air port and an air supply port, an indoor heat exchanger and an indoor fan are arranged in the shell, under the action of the indoor fan, air enters the shell through the return air port, and is sequentially sent into the indoor space again through the indoor heat exchanger and the air supply port, a heating component is also arranged in the shell, the heating component is arranged on the upstream side of the air supply port along the air supply direction of the air conditioner, the heating component is configured with a protection component, the protection component comprises: a protector, which is arranged at a position where the temperature radiated by the heating component can be directly sensed; and a fuse unit, which comprises a first fuse and a second fuse, and the first fuse and the second fuse are arranged at different orientations relative to the heating component, so that the first fuse and the second fuse sense the temperature of different areas related to the heating component; wherein the protector, the first fuse and the second fuse are connected in series to the power supply circuit of the heating component, so that: when any one of them reaches the action temperature, the heating component can be stopped.

[0010] By adding a fuse, the requirements of the electric heating abnormality test of the air conditioner can be met more comprehensively.

[0011] For the above-mentioned air conditioner, in a possible embodiment, the shell includes a mounting base, the mounting base has an opening, and the air heated by the heating component passes through the opening to the air supply port, wherein, observed along the air flow direction, the temperature sensing side of the first fuse is located on the upstream side of the mounting base so as to sense the temperature radiated by the heating component; the temperature sensing side of the second fuse is located on the downstream side of the mounting base so as to sense the temperature of the air delivered to the air supply port through the opening.

[0012] By setting up the mounting base, the shell is divided into two areas along the air flow direction, one of which is the area that can directly sense the temperature radiated by the heating component, and the other is the temperature of the air that will reach the air outlet after being heated by the heating component (when the heating component is not working, the air is not heated). By planning the protection of the two areas respectively through fuses, it is possible to effectively protect the different areas of concern in the electric heating abnormality test.

[0013] It can be understood that, under the premise that the sensed area meets the conditions, the specific installation positions and installation methods of the first fuse and the second fuse can be flexibly selected, such as: the first fuse can be set at any position in the air flow area between the return air outlet and the mounting base of the air conditioner, such as near the downstream side of the indoor heat exchanger, near the upstream side of the mounting base, or any position therebetween, etc. The second fuse can be set at any position in the air flow area between the air conditioner mounting base and the air supply outlet, such as near the opening, near the air supply outlet, or any position therebetween, etc.

[0014] In addition, under the premise of being able to meet the splitting function, the structural form of the mounting base, its relative position with the shell, and the fixing method can be flexibly selected, such as: the mounting base and the shell can be integrally formed or fixedly connected, the mounting base can be an integral component or a combination of multiple components, the structural form can be any reasonable shape such as block, plate, etc., such as the mounting base includes two semicircular ring plates fixed in the shell by screwing, the two semicircular rings are arranged opposite to each other to form an opening shape, etc.

[0015] For the above-mentioned air conditioner, in a possible implementation manner, the first fuse and the second fuse are both arranged on the mounting base, wherein the temperature sensing side of the first fuse is located on the upstream side of the mounting base, and the temperature sensing side of the second fuse is located on the downstream side of the mounting base.

[0016] By configuring in this way, the two fuses can be mounted more compactly on the air conditioner, thereby facilitating electrical connection between them.

[0017] For the above air conditioner, in a possible implementation manner, an operating temperature of the second fuse is greater than an operating temperature of the first fuse.

[0018] With such an arrangement, it is possible to effectively protect the temperatures in the area before and after the air supply in the electric heating abnormality test.

[0019] For the above air conditioner, in a possible implementation manner, the operating temperature of the second fuse is a value between 85-95°C.

[0020] By setting it in this way, it is possible to achieve more effective protection against the temperature in the area after the air is supplied in the electric heating abnormality test.

[0021] For the above air conditioner, in a possible implementation manner, the operating temperature of the protector is not less than 45° C., and the operating temperature of the first fuse is at least 30° C. greater than the operating temperature of the protector.

[0022] With such an arrangement, more effective protection can be achieved against the temperature in the radiation area of ​​the heating unit during the electric heating abnormality test.

[0023] For the above-mentioned air conditioner, in a possible implementation manner, the heating assembly includes a heating bracket fixed to the mounting base and a heating element disposed on the heating bracket, wherein the heating bracket is detachably disposed on the mounting base.

[0024] Through such an arrangement, the heating component is installed in the shell.

[0025] For the above-mentioned air conditioner, in a possible implementation manner, the heating bracket includes a base frame, the base frame includes a vertical portion and a transverse portion extending from the vertical portion, wherein the protector and the first fuse are arranged in the transverse portion.

[0026] With such an arrangement, it is possible to fix the protector and the first fuse at positions where the temperature radiated by the heating component can be sensed.

[0027] For the above air conditioner, in a possible implementation manner, a first installation position and a second installation position are formed on the transverse portion, and the protector and the first fuse are respectively arranged at the first installation position and the second installation position.

[0028] Through such an arrangement, the protector and the first fuse can be fixed separately. It is understandable that the specific form of the first installation position and the second installation position and the distribution mode on the horizontal part are not particularly limited. Under the premise of being able to meet reliable fixing and sensing, those skilled in the art can flexibly adjust according to actual needs.

[0029] For the above air conditioner, in a possible implementation manner, the second fuse is directly mounted to the mounting base, and at least the temperature sensing side of the second fuse extends to the downstream side of the mounting base.

[0030] With such an arrangement, the second fuse can be reliably fixed to the housing of the air conditioner, and the temperature of the air to be delivered through the air outlet can be accurately sensed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described below in conjunction with a window air conditioner and with reference to the accompanying drawings.

[0032] Figure 1 A schematic structural diagram of a window air conditioner according to an embodiment of the present invention is shown;

[0033] Figure 2 A schematic cross-sectional view of a window air conditioner according to an embodiment of the present invention is shown;

[0034] Figure 3 A schematic structural diagram showing the upstream side of a mounting base of a window type air conditioner according to an embodiment of the present invention;

[0035] Figure 4 A schematic diagram showing the structure of the downstream side of the mounting base of a window type air conditioner according to an embodiment of the present invention;

[0036] Figure 5 A schematic diagram showing the installation of a protector and a first fuse of a window air conditioner according to an embodiment of the present invention; and

[0037] Figure 6 A schematic diagram showing the installation of a second fuse of a window air conditioner according to an embodiment of the present invention.

[0038] List of reference numerals:

[0039] 100. Window air conditioner; 1. Outdoor part; 11. Outdoor air inlet grille; 2. Indoor part; 21. Air supply outlet; 22. Air return outlet; 23. Enclosed area; 31. Curtain frame; 32. Window machine fixing bracket; 41. Indoor heat exchanger; 42. Indoor fan; 43. Volute; 5. Heating component; 6. Mounting base; 61. Opening; 7. Basic frame; 71. Vertical part; 72. Horizontal part; 73. Flanging; 751. First protrusion; 752. Second protrusion; 76. Fixing rib; 761. Bending; 762. Docking section; 77. Supporting rib; 78. Heating wire; 8. Protector; 91. First fuse; 92. Second fuse. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Although this embodiment is described by taking a window air conditioner as an example, it is obvious that the present invention can also be other types of air conditioners, such as embedded air conditioners, cabinet air conditioners, etc., in which the indoor unit and the outdoor unit are separated.

[0041] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] Reference Figure 1 and Figure 2 , Figure 1 A schematic diagram showing the structure of an air conditioner according to an embodiment of the present invention is shown. Figure 2 A schematic cross-sectional view of a window air conditioner according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, the window air conditioner 100 mainly includes an outdoor part 1 and an indoor part 2, wherein an outdoor air inlet grille 11 is provided on the shell of the outdoor part, and a compressor, an outdoor heat exchanger, an outdoor fan, etc. are provided inside the shell. Among them, the shell of the indoor part is provided with an air supply port 21 above the panel facing the indoor space, and a return air port 22 is provided below. A closed area 23 is provided between the air supply port and the return air port, and buttons, display interfaces, etc. are provided on the closed area. The shell is mainly provided with an indoor heat exchanger 41, an indoor fan 42 and an electric control box, etc. If the indoor fan is a centrifugal fan, a volute 43 is formed inside the shell at a position corresponding to the air supply port. The circulation loop of the refrigerant also includes a throttling component (such as a capillary tube, etc.) provided between the outdoor heat exchanger and the indoor heat exchanger. Furthermore, corresponding to the window air conditioner of the electric heating type, a heating assembly 5 is further arranged inside the housing of the indoor part, and the heating assembly 5 is arranged between the indoor heat exchanger and the indoor fan, so that under the action of the indoor fan, the air in the indoor space is sequentially sent into the indoor space again through the return air port, the indoor heat exchanger, the heating assembly, the volute, and the air supply port, that is, the air after the convection heat exchange treatment with the indoor heat exchanger is first heated by the heating assembly, and then sent into the indoor space through the air supply port. In addition, a curtain frame 31 is extended outward on both sides of the outer shell of the window air conditioner, and a window machine fixing bracket 32 ​​is arranged at the bottom of the outer shell of the window air conditioner 100. Due to the introduction of the electric heating function, the cooling and heating functions of the window air conditioner can be realized by combining the single cooling type with the heating assembly. When the refrigerant circulates along the compressor → outdoor heat exchanger → indoor heat exchanger → compressor, the window air conditioner realizes cooling. When the heating assembly radiates heat, the window air conditioner realizes heating.

[0043] Reference Figures 3 to 6 , Figure 3 A schematic diagram showing the structure of the upstream side of the mounting base of a window type air conditioner according to an embodiment of the present invention is shown. Figure 4 A schematic diagram showing the structure of the downstream side of the mounting base of a window type air conditioner according to an embodiment of the present invention is shown. Figure 5 A schematic diagram showing the installation of a protector and a first fuse of a window air conditioner according to an embodiment of the present invention is shown. Figure 6 The following is a schematic diagram showing the installation of the second fuse of a window air conditioner according to an embodiment of the present invention. Figures 3 to 6As shown, a mounting base 6 is provided in the housing, and the mounting base is a plate-like structure, and an opening 61 is provided on the plate-like structure at a position aligned with the indoor fan, so that the air heated by the heating component passes through the opening to the volute 43, and then is sent into the indoor space through the air supply port 21. Observing along the flow direction of the air, the heating component 5 includes a heating bracket fixed to the upstream side of the mounting base and a heating element provided on the heating bracket, such as a heating element that can be an electric heating wire 78. Taking the electric heating wire as an example, a plurality of electric heating wires are laid at a position directly opposite to the opening.

[0044] according to Figure 3 In the orientation of the heating bracket, the heating bracket includes a base frame 7 and a fixing rib 76, the base frame is located on the right side of the opening, and the fixing rib is connected to the base frame and extends to the left side of the opening. The base frame on the right side includes a vertical portion 71 and a transverse portion 72 extending from the upper side of the vertical portion from right to left, and the protector 8 and the first fuse 91 are installed on the transverse portion. Specifically, a first mounting position and a second mounting position are formed on the transverse portion, and the protector 8 and the first fuse 91 are fixedly arranged in the first mounting position and the second mounting position in the vertical direction, respectively. It can be seen that the protector 8 and the first fuse 91 are both located in the area where the heating wire is located, specifically, between the downstream side of the indoor heat exchanger and the upstream side of the centrifugal fan, and the temperature sensing sides of the protector 8 and the first fuse 91 are both located below. In this way, the protector 8 and the first fuse 91 are arranged at the upper right corner of the upstream side of the mounting base, and the temperature sensing sides of both are located in the area where the heating wire is located, so that the temperature radiated by the heating wire can be sensed.

[0045] Still follow Figure 3 The orientation of the base frame is detachably fixed to the mounting base. In a possible embodiment, the vertical portion and / or the horizontal portion has a flange 73 extending on one side close to the mounting base, and the flange is fixedly connected to the mounting base by means of fasteners (such as screws, etc.). The setting direction of the fixing rib 76 is roughly parallel to the heating wire 78, and the right end of the fixing rib has a bend 761. A hole is opened on the vertical portion, and the fixing rib passes through the hole from right to left and then extends from right to left. The bend abuts against the right side of the vertical portion. The left end of the fixing rib has a docking section 762. The upstream side of the mounting base is provided with a first protrusion 751 corresponding to the number of the fixing ribs, and the first protrusion is provided with a groove matching the docking section. In this way, in the assembled state, the bend at the right end of the fixing rib abuts against the right side of the vertical portion, and the docking section at the left end of the fixing rib abuts against the groove on the first protrusion.

[0046] For example, in a specific embodiment, the number of fixing ribs is two, and in order to enhance the strength and ensure the stability of the connection, a vertical supporting rib 77 is added between the two transverse fixing ribs 76. The first protrusion is a plate of a prismatic structure, and a strip groove corresponding to the docking section is formed at the junction of the prismatic structure.

[0047] In a specific embodiment, a second protrusion 752 is provided on the upstream side of the mounting base, and a mounting hole for matching with a screw is provided on the second protrusion, and the two are connected by screws after the flange 73 abuts against the second protrusion 752. In this way, in the assembled state, the base frame and the upstream side of the mounting base are not in close contact, so that the heating component can be easily loaded and unloaded on the shell.

[0048] On this basis, a fuse is added at the upper left corner of the upstream side of the mounting base, namely, the second fuse 92. The second fuse 92 is directly fixed on the mounting base along the air supply direction, and the first fuse 91, the second fuse 92 and the protector 8 are electrically connected in series. Different from the first fuse 91 and the protector 8, the temperature sensing side of the second fuse 92 is on the downstream side of the mounting base, that is, on the side of the mounting base away from the heating wire. In this way, the second fuse 92 senses the temperature of the air that is heated by the electric heating wire and then sent out to the volute through the opening and finally sent into the indoor space through the air supply port.

[0049] The action temperature T1 of the protector 8 can be set to a value not less than 45° C., such as a value between 45° C. and 55° C., such as the 45° C. selected in the above reverse analysis process.

[0050] The operating temperature T21 (T21>T1) of the first fuse 91 may be set to a value at least 30°C greater than T1, such as 45°C+30°C=75°C selected in the above reverse analysis process.

[0051] The operating temperature T22 (T22>T21) of the second fuse 92 can be set to a value between 85-95°C, such as 90°C.

[0052] It is understandable that, since the first fuse and the second fuse are protection mechanisms for different regions, their temperatures may be the same or different. For example, in a possible implementation, the operating temperature of the second fuse is usually greater than the operating temperature of the first fuse.

[0053] Based on the above protection mechanism of the present invention, the 100 series test, 200 series test and 300 series test in the electric heating abnormality test mentioned above are re-tested.

[0054] By setting the protector 8, passing of the 300 series test can be ensured.

[0055] The passing of the 200 series test can be ensured by setting the first fuse 91 and the second fuse 92. At the same time, in order to avoid the situation where the fuse operates before the protector, the operating temperature of the (first and second) fuses cannot be set too low.

[0056] In the 100 series test, when the test is conducted when the air outlet is blocked, it is necessary to ensure that the fuse can function. In the present invention, this is achieved by the second fuse 22 functioning. Specifically, when the air outlet is blocked, since the fan is operating normally at this time, fresh air is continuously sucked into the housing, so the temperature near the first fuse 91 is not high, that is, the first fuse 91 at this time does not reach the operating temperature. On the contrary, after the fresh air is heated and blown out through the opening, the temperature near the second fuse 92 will rise, so that the probability of the second fuse 92 reaching the operating temperature is higher. In this way, it is only necessary to set the operating temperature of the second fuse 92 to 90°C. When the air outlet temperature reaches 90°C, the second fuse 92 can function, thereby ensuring that the air duct, volute, panel, etc. of the window air conditioner will not be burned in the 100 series test.

[0057] In the 100 series test, when the test is conducted under the condition that the fan is blocked, it is necessary to ensure that the fuse can function. In the present invention, this is achieved by the first fuse 91 functioning. Specifically, when the fan is blocked, no hot air blows out from the opening, and the temperature sensed by the second fuse 92 is not high, so it will not reach the operating temperature and melt. The first fuse 91 senses the heat radiated by the heating wire, so the temperature sensed by the first fuse 91 will rise rapidly until it reaches the operating temperature and melts.

[0058] It can be seen that the air conditioner of the present invention ensures that mechanical damage or fire will not occur in the air conditioner under various extreme test conditions during the electric heating abnormality test through the cooperation between the protector 8 and the fuses (91, 92).

[0059] It should be noted that although the window air conditioner with a specific structure formed in the above specific manner is introduced as an example, those skilled in the art will appreciate that the present invention should not be limited thereto. In fact, the user can flexibly adjust the specific structure of the air conditioner according to the actual application scenario and other situations.

[0060] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An air conditioner, characterized in that: The air conditioner comprises an indoor part, the indoor part comprises a shell, the shell has a return air port and an air supply port, an indoor heat exchanger and an indoor fan are arranged in the shell, under the action of the indoor fan, air enters the shell through the return air port, and is sequentially sent into the indoor space again through the indoor heat exchanger and the air supply port, a heating component is also arranged in the shell, and the heating component is arranged on the upstream side of the air supply port along the air supply direction of the air conditioner, The heating component is provided with a protection component, and the protection component comprises: a protector disposed at a position capable of directly sensing the temperature radiated by the heating component; and a fuse unit comprising a first fuse and a second fuse, and The first fuse and the second fuse are arranged at different positions relative to the heating component, so that the first fuse and the second fuse sense temperatures of different areas related to the heating component; Wherein, the protector, the first fuse and the second fuse are connected in series to the power supply circuit of the heating component so that: When any one of them reaches the operating temperature, the heating component can be stopped; The housing includes a mounting base having an opening, and the air heated by the heating component flows to the air outlet through the opening. Observing along the flow direction of the air, the temperature sensing side of the first fuse is located on the upstream side of the mounting base so as to sense the temperature radiated by the heating component; the temperature sensing side of the second fuse is located on the downstream side of the mounting base so as to sense the temperature of the air sent to the air outlet through the opening; The first fuse and the second fuse are both arranged on the mounting base, Wherein, the temperature sensing side of the first fuse is located at the upstream side of the mounting base, and the temperature sensing side of the second fuse is located at the downstream side of the mounting base; Wherein, the operating temperature of the second fuse is greater than the operating temperature of the first fuse.

2. The air conditioner according to claim 1, characterized in that: The operating temperature of the second fuse is a value between 85-95°C.

3. The air conditioner according to claim 1, characterized in that: The operating temperature of the protector is not less than 45°C, and The operating temperature of the first fuse is at least 30° C. higher than the operating temperature of the protector.

4. The air conditioner according to any one of claims 1 to 3, characterized in that: The heating assembly comprises a heating support fixed to the mounting base and a heating element arranged on the heating support. Wherein, the heating bracket is detachably arranged on the mounting base.

5. The air conditioner according to claim 4, characterized in that: The heating support comprises a basic frame, wherein the basic frame comprises a vertical portion and a horizontal portion extending from the vertical portion. Wherein, the protector and the first fuse are arranged in the transverse part.

6. The air conditioner according to claim 5, characterized in that: A first mounting position and a second mounting position are formed on the transverse portion, and the protector and the first fuse are respectively arranged at the first mounting position and the second mounting position.

7. The air conditioner according to any one of claims 1 to 3, characterized in that: The second fuse is mounted directly to the mounting base, and At least the temperature-sensing side of the second fuse extends to the downstream side of the mounting base.

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