CN212227241U - Air conditioner - Google Patents

Abstract

The utility model provides an air conditioner, which comprises a housin, be provided with heating element in the casing, heating element disposes the protection subassembly, the protection subassembly includes: a protector disposed at a position where a temperature radiated from the heating member can be directly sensed; and a fuse unit including a first fuse and a second fuse, and the first fuse and the second fuse being disposed at different orientations with respect to the heating assembly such that the first fuse and the second fuse sense temperatures of different areas associated with the heating assembly; wherein the protector, the first fuse and the second fuse are connected in series to each other to a power supply circuit of the heating assembly so as to: the heating assembly may be deactivated in the event that either of them reaches an operating temperature. The requirement of the electrical heating abnormity test of the air conditioner can be met more comprehensively by adding one fuse.

Description

Air conditioner

Technical Field

The utility model relates to an air treatment technical field especially relates to an air conditioner.

Background

In the process of developing an air conditioner with an electric heating function, an electric heating abnormity test is required according to standard, and the purpose of the electric heating abnormity test is mainly to ensure that the developed air conditioner cannot be damaged or extremely phenomena such as fire and the like caused by the wrong operation of a user, and therefore the loss of the user is caused. Error operations such as by a user may include, but are not limited to: the user carelessly shields the air supply opening and/or the air return opening of the air conditioner in which the electric heating function is operating with a curtain/clothes or the like. Such an erroneous operation may cause heat accumulated in the air conditioner to be not dissipated in time, so that the temperature in the air conditioner is continuously increased, and in case that the temperature is increased to a certain extent or the high temperature state is continued for a certain time, the above-mentioned air conditioner may be damaged or an extreme phenomenon such as fire may occur.

At present, in order to ensure the performance of an electrical heating abnormity test, a double protection mechanism consisting of a protector and a fuse is adopted. The invention patent application (CN109780637A) discloses a heating assembly, an electric heating device and a ceiling machine, wherein the heating assembly comprises a support, a PTC heater, a mounting bracket, a first fuse link and a temperature controller, the support is used for being mounted on a mounting plate, the PTC heater is mounted on the support, the mounting bracket is mounted on the support and positioned on the surface of the PTC heater, the first fuse link and the temperature controller are mounted on the mounting bracket, and the first fuse link and the temperature controller are both electrically connected with the PTC heater. Like this, when the PTC heater reaches the protection temperature, the temperature controller disconnection, work as when the PTC heater reduces to the reset temperature, the temperature controller resets, works as when the PTC heater reaches fusing temperature, first fuse-link fusing, the temperature controller is right the PTC heater plays the one-level protection, first fuse-link is right the PTC heater plays the second grade protection.

The intention of the above arrangement is double protection, however, in the event of a protector failure, the fuse does not function as a timely protection. Even if the fuse is in operation, the temperature of the air supplied by the air conditioner is often above the high temperature limit of the conventional equipment, and the equipment or the components in the equipment are burnt out and cannot be reused.

Accordingly, there is a need in the art for a new solution to the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem

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.

Solution scheme

The utility model provides an air conditioner, air conditioner includes the indoor portion, the indoor portion includes the casing, the casing has return air inlet and supply-air outlet, be provided with indoor heat exchanger and indoor fan in the casing, under the effect of indoor fan, the air warp the return air inlet gets into inside the casing, warp in proper order indoor heat exchanger the indoor space is sent into once more to the supply-air outlet, still be provided with heating element in the casing, heating element follows the air supply direction of air conditioner set up in the upstream side of supply-air outlet, heating element disposes the protection subassembly, the protection subassembly includes: a protector disposed at a position where a temperature radiated from the heating member can be directly sensed; and a fuse unit including a first fuse and a second fuse, and the first fuse and the second fuse being disposed at different orientations with respect to the heating assembly such that the first fuse and the second fuse sense temperatures of different areas associated with the heating assembly; wherein the protector, the first fuse and the second fuse are connected in series to each other to a power supply circuit of the heating assembly so as to: the heating assembly may be deactivated in the event that either of them reaches an operating temperature.

The requirement of the electrical heating abnormity test of the air conditioner can be met more comprehensively by adding one fuse.

With the air conditioner described above, in one possible embodiment, the casing includes a mounting base having an opening therein through which the air heated by the heating element is passed to the air supply outlet, wherein the temperature sensing side of the first fuse is located on an upstream side of the mounting base as viewed in a flow direction of the air so as to sense a temperature radiated from the heating element; the temperature sensing side of the second fuse is located on a downstream side of the mounting substrate so as to sense a temperature of air sent to the air blowing port through the opening.

By providing the mounting base, the casing is divided into two regions in the air flow direction, one of which is a region in which the temperature radiated from the heating unit can be directly sensed, and the other is a temperature of air heated by the heating unit (in a case where the heating unit is not operated, the air is not heated) and then reaching the air outlet, and the temperatures of the two regions are respectively protected by the fuse, whereby it is possible to effectively protect different regions concerned in the electrical heating abnormality test.

It can be understood that, on the premise that the sensed region satisfies the condition, the specific installation positions and installation manners of the first fuse and the second fuse can be flexibly selected, such as: the first fuse may be disposed at any position of the air conditioner in the air flow region between the return air opening and the mounting base, such as a position near the downstream side of the indoor heat exchanger, a position near the upstream side of the mounting base, or any position therebetween, and the second fuse may be disposed at any position of the air conditioner in the air flow region between the mounting base and the air blowing opening, such as a position near the opening, a position near the air blowing opening, or any position therebetween.

In addition, on the premise of satisfying the division function, the structural form of the mounting base body, the relative position of the mounting base body and the shell and the fixing mode can be flexibly selected, such as: the mounting base body and the shell can be integrally formed or fixedly connected, the mounting base body can be an integral component or a combination of a plurality of components, the structural form can be any reasonable shape such as a block shape and a plate shape, if the mounting base body comprises two semicircular plates fixed in the shell in a screwed connection mode, and the two semicircular plates are oppositely arranged to enclose into an opening shape.

In one possible embodiment, the air conditioner further includes a second fuse disposed on the mounting substrate, wherein the temperature sensing side of the second fuse is located on a downstream side of the mounting substrate, and the temperature sensing side of the second fuse is located on an upstream side of the mounting substrate.

By providing such a configuration, it is possible to more compactly mount the two fuses to the air conditioner, thereby facilitating electrical connection between the two fuses.

In one possible embodiment, the air conditioner includes a first fuse, a second fuse, and a third fuse.

With this arrangement, the temperature in the region before the air blow and the temperature in the region after the air blow in the electrical heating abnormality test can be effectively protected.

In a possible embodiment, the operating temperature of the second fuse is a value between 85 and 95 ℃ for the air conditioner.

With this arrangement, it is possible to protect the temperature in the region after the air blow in the electrical heating abnormality test more effectively.

With the above air conditioner, in one possible embodiment, the operating temperature of the protector is not less than 45 ℃, and the operating temperature of the first fuse is at least 30 ℃ greater than the operating temperature of the protector.

With such an arrangement, it is possible to protect the temperature in the radiation region of the heating element more effectively in the electrical heating abnormality test.

With regard to the above air conditioner, in one possible embodiment, the heating assembly includes a heating bracket fixed to the mounting base and a heating element provided on the heating bracket, wherein the heating bracket is detachably provided to the mounting base.

By such an arrangement, the mounting of the heating assembly within the housing is achieved.

With the air conditioner described above, in one possible embodiment, the heating rack includes a base frame including a vertical portion and a lateral portion extending from the vertical portion, wherein the protector and the first fuse are provided to the lateral portion.

With this arrangement, the protector and the first fuse can be fixed at positions where the temperature radiated from the heating element can be sensed.

With the above air conditioner, in one possible embodiment, the lateral portion is formed with a first mounting location and a second mounting location, and the protector and the first fuse are respectively provided at the first mounting location and the second mounting location.

With this arrangement, the protector and the first fuse can be fixed to each other. It is understood that the specific form of the first and second mounting locations and the distribution thereof on the transverse portion are not particularly limited, and those skilled in the art can flexibly adjust the mounting locations according to actual needs on the premise of satisfying reliable fixing and sensing.

With the air conditioner described above, in one possible embodiment, the second fuse is directly mounted to the mounting substrate, and at least the temperature sensing side of the second fuse protrudes to the downstream side of the mounting substrate.

With this arrangement, the second fuse can be reliably fixed to the casing of the air conditioner, and the temperature of the air to be blown out through the air blowing port can be accurately sensed.

Drawings

The present invention will now be described with reference to the accompanying drawings in conjunction with a window air conditioner. In the drawings:

fig. 1 is a schematic structural view illustrating a window type air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a window type air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an upstream side of a mounting base of a window type air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic view 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;

fig. 5 is a schematic view illustrating the installation of a protector and a first fuse of a window type air conditioner according to an embodiment of the present invention; and

fig. 6 is a schematic view illustrating the installation of a second fuse of a window type air conditioner according to an embodiment of the present invention.

List of reference numerals:

100. a window type air conditioner; 1. an outdoor part; 11. an outdoor air inlet grille; 2. an indoor section; 21. an air supply outlet; 22. an air return opening; 23. an enclosed area; 31. pulling the curtain frame; 32. a window machine fixing bracket; 41. an indoor heat exchanger; 42. an indoor fan; 43. a volute; 5. a heating assembly; 6. installing a base body; 61. an opening; 7. a base frame; 71. a vertical portion; 72. a transverse portion; 73. flanging; 751. a first protrusion; 752. a second protrusion; 76. fixing the ribs; 761. bending; 762. a butt joint section; 77. supporting ribs; 78. an electric heating wire; 8. a protector; 91. a first fuse; 92. a second fuse.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Although the present embodiment is described by taking a window type air conditioner as an example, it is obvious that the present invention may also be other types of air conditioners, such as an embedded air conditioner, a cabinet air conditioner, etc., in which an indoor unit and an outdoor unit are separated.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, fig. 1 shows a schematic structural diagram of an air conditioner according to an embodiment of the present invention, and fig. 2 shows a schematic sectional view of a window type air conditioner according to an embodiment of the present invention. As shown in fig. 1 and 2, the window type air conditioner 100 mainly includes an outdoor part 1 and an indoor part 2, wherein an outdoor air inlet grille 11 is provided on a casing of the outdoor part, and a compressor, an outdoor heat exchanger, an outdoor fan, etc. are provided inside the casing. The casing of the indoor part is provided with an air supply outlet 21 above a panel facing an indoor space, an air return opening 22 below the casing, a closed area 23 between the air supply outlet and the air return opening, and buttons, a display interface and the like are arranged on the closed area. The casing is mainly internally provided with an indoor heat exchanger 41, an indoor fan 42, an electric cabinet and the like, if the indoor fan is a centrifugal fan, a volute 43 is formed in the casing at a position corresponding to the air supply outlet. The refrigerant circulation circuit further includes a throttle member (such as a capillary tube) provided between the outdoor heat exchanger and the indoor heat exchanger. And, corresponding to the window air conditioner of electric heater type, the inside heating element 5 that still disposes of the casing of indoor portion, heating element 5 sets up between indoor heat exchanger and indoor fan to under indoor fan's effect, the air of interior space sends into the interior space again through return air inlet, indoor heat exchanger, heating element, spiral case, supply-air outlet in proper order, promptly: the air after being subjected to the heat convection treatment with the indoor heat exchanger is heated by the heating assembly and then is delivered into the indoor space through the air supply outlet. In addition, the two sides of the outer casing of the window type air conditioner are respectively extended outwards to form a curtain pulling frame 31, and the bottom of the outer casing of the window type air conditioner 100 is provided with a window machine fixing support 32. Due to the introduction of the electric heating function, the refrigerating and heating functions of the window type air conditioner can be realized by combining a single-cooler type with the heating component. When the refrigerant circularly flows along the compressor → the outdoor heat exchanger → the indoor heat exchanger → the compressor, the window type air conditioner realizes the refrigeration. When the heating component radiates heat, the window type air conditioner realizes heating.

Referring to fig. 3 to 6, fig. 3 shows the structural schematic diagram of the upstream side of the installation base member of the window air conditioner of an embodiment of the present invention, fig. 4 shows the structural schematic diagram of the downstream side of the installation base member of the window air conditioner of an embodiment of the present invention, fig. 5 shows the installation schematic diagram of the protector and the first fuse of the window air conditioner of an embodiment of the present invention, and fig. 6 shows the installation schematic diagram of the second fuse of the window air conditioner of an embodiment of the present invention. As shown in fig. 3 to 6, a mounting base 6 is provided in the casing, and the mounting base is a plate-like structure having an opening 61 at a position aligned with the indoor fan, so that air heated by the heating assembly is passed through the opening to the scroll 43 and then fed into the indoor space through the air feeding port 21. The heating unit 5 includes a heating bracket fixed to an upstream side of the mounting base as viewed in the flow direction of the air, and a heating element, such as a heating wire 78, provided on the heating bracket. Taking the electric heating wire as an example, a plurality of electric heating wires are laid at the position opposite to the opening.

According to the orientation in fig. 3, the heating rack comprises a base frame 7, which is located on the right side of the opening, and fixing ribs 76, which are connected to the base frame and extend to the left side of the opening. The right base frame includes a vertical portion 71 and a lateral portion 72 extending from the upper side of the vertical portion from right to left, to which the protector 8 and the first fuse 91 are mounted. Specifically, a first installation position and a second installation position are formed on the transverse portion, the protector 8 and the first fuse 91 are respectively and fixedly arranged in the first installation position and the second installation position along the vertical direction, it can be seen that the protector 8 and the first fuse 91 are both located in a region 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 provided at the upper right corner of the upstream side of the mounting base, and both temperature sensing sides are located in the region where the heater wire is located, so that the temperature radiated from the heater wire can be sensed.

Still according to the orientation of fig. 3, wherein the base frame is detachably fixed to the mounting base. In one possible embodiment, the vertical part and/or the transverse part extends with a flange 73 on the side close to the mounting base, which flange is fixedly connected to the mounting base by means of a fastening element (e.g. a screw or the like). The direction that sets up of fixed muscle 76 is roughly parallel with heater strip 78, the right-hand member of fixed muscle has 761 of bending, it is porose to open on vertical section, fixed muscle stretches out from the right left side after passing the hole from the right left side, bend and lean on the right side at vertical section, the left end of fixed muscle has butt joint section 762, the upstream side of installation base member is provided with the first arch 751 that corresponds with the number of fixed muscle, be provided with the groove that matches with the butt joint section in the first arch, so, under the state of having assembled, the bending of fixed muscle right-hand member supports and leans on to vertical section's right side, the butt joint section of fixed muscle left end supports and leans on to first protruding groove in.

In one embodiment, the number of the fixing ribs is two, and a vertical support rib 77 is additionally arranged between the two horizontal fixing ribs 76 for enhancing the strength and ensuring the stability of the connection. The first bulge is a plate with a prismatic structure, and a strip-shaped groove corresponding to the butt joint section is formed at the junction of the prismatic structure.

In a specific embodiment, the upstream side of the mounting base is provided with a second protrusion 752, the second protrusion is provided with a mounting hole matched with a screw, and the flange 73 abuts against the second protrusion 752 and then is connected with the second protrusion by the screw. In this way, in the assembled state, the base frame is not in abutting contact with the upstream side of the mounting base, thereby facilitating the mounting and dismounting operation of the heating unit to and from the housing.

On this basis, a second fuse 92 is added to the upper left corner of the upstream side of the mounting substrate. The second fuse 92 is directly fixed to the mounting substrate in the air blowing direction, and the first fuse 91, the second fuse 92 and the protector 8 are electrically connected in series with each other. Unlike the first fuse 91 and the protector 8, the temperature sensing side of the second fuse 92 is at the downstream side of the mounting base, i.e., at the side of the mounting base away from the heating wire, and thus the second fuse 92 senses the temperature of air heated by the heating wire, and then sent out to the scroll through the opening and finally sent into the indoor space through the air blowing port.

The actuation temperature T1 of the protector 8 may be set to a value not less than 45 c, such as a value between 45-55 c, such as 45 c selected in the reverse analysis process.

Here, the operating temperature T21 of the first fuse 91 (T21> T1) may be set to a value at least 30 ℃ greater than T1, such as 45 ℃ +30 ℃ ═ 75 ℃ as selected in the above back-off analysis.

Here, the operating temperature T22 of the second fuse 92 (T22> T21) may be set to a certain value of 85-95 ℃, such as 90 ℃.

It will be appreciated that since the first fuse and the second fuse are protection mechanisms for different regions, the temperatures of the two may be the same or different. As in one possible embodiment, the operating temperature of the second fuse is generally greater than the operating temperature of the first fuse.

Based on the above protection mechanism of the present invention, the test is performed with reference to the 100 series test, the 200 series test, and the 300 series test in the foregoing electrical heating abnormality test.

By the arrangement of the protector 8, the passing of 300 series tests can be ensured.

By the arrangement of the first fuse 91 and the second fuse 92, the passing of the 200 series test can be ensured. Meanwhile, in order to avoid the situation where the fuse operates prior to the protector, it is required that the operating temperature of the (first, second) fuse cannot be set too low.

In the 100 series test, when the test is performed with the air supply opening blocked, it is necessary to ensure that the fuse functions. In the present invention, this is achieved by the second fuse 22 functioning. Specifically, in the case where the air supply opening is blocked, since the blower is normally operated at this time, fresh air is continuously sucked into the housing, and therefore the temperature near the first fuse 91 is not high, that is, the first fuse 91 does not reach the operating temperature at this time. On the contrary, after the fresh air is heated and blown out through the opening, the temperature near the second fuse 92 rises, so that the probability that the second fuse 92 reaches the operating temperature is higher. Therefore, the action temperature of the second fuse 92 is only required to be set to 90 ℃, and when the air outlet temperature reaches 90 ℃, the second fuse 92 can act, so that the air duct, the volute, the panel and the like of the window air conditioner cannot be burnt in 100 series tests.

In the 100 series test, when the test is carried out under the condition that the fan is locked, the fuse is required to be ensured to be functional. In the present invention, this is realized by the first fuse 91 functioning. Specifically, in the case that the blower is locked, no hot wind is blown out from the opening, the temperature sensed by the second fuse 92 is not high and thus is not reached to the operating temperature to be fused, and the temperature sensed by the first fuse 91 is the heat radiated from the heating wire, so that the temperature sensed by the first fuse 91 is rapidly increased until reaching the operating temperature to be fused.

It can be seen that the utility model discloses an air conditioner passes through the cooperation of protector 8 with fuse (91, 92), guaranteed, the air conditioner at the unusual experimental in-process of electrical heating, phenomenon such as mechanical damage or catching fire can not appear under various extreme test conditions.

It should be noted that, although the window type air conditioner of the specific structure constructed as above is described 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 type, structure and the like of the air conditioner according to the situations such as actual application scenes and the like.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. An air conditioner is characterized in that the air conditioner comprises an indoor part, the indoor part comprises a shell, the shell is provided with an air return opening and an air supply opening, an indoor heat exchanger and an indoor fan are arranged in the shell, air enters the shell through the air return opening under the action of the indoor fan and is sent into an indoor space through the indoor heat exchanger and the air supply opening in sequence, a heating assembly is further arranged in the shell and is arranged on the upstream side of the air supply opening along the air supply direction of the air conditioner,

the heating assembly is configured with a protective assembly comprising:

a protector disposed at a position where a temperature radiated from the heating member can be directly sensed; and

a fuse unit including a first fuse and a second fuse, and

the first and second fuses being disposed at different orientations relative to the heating assembly such that the first and second fuses sense temperatures of different areas associated with the heating assembly;

wherein the protector, the first fuse and the second fuse are connected in series to each other to a power supply circuit of the heating assembly so as to:

the heating assembly may be deactivated in the event that either of them reaches an operating temperature.

2. The air conditioner according to claim 1, wherein said casing includes a mounting base having an opening therein through which air heated by said heating module is passed to said air blowing port,

wherein a temperature sensing side of the first fuse is located on an upstream side of the mounting substrate as viewed in a flow direction of air so as to sense a temperature radiated from the heating element; the temperature sensing side of the second fuse is located on a downstream side of the mounting substrate so as to sense a temperature of air sent to the air blowing port through the opening.

3. The air conditioner according to claim 2, wherein the first fuse and the second fuse are provided to the mounting base,

wherein the temperature sensing side of the first fuse is located on an upstream side of the mounting substrate, and the temperature sensing side of the second fuse is located on a downstream side of the mounting substrate.

4. The air conditioner according to claim 3, wherein an operating temperature of the second fuse is greater than an operating temperature of the first fuse.

5. The air conditioner according to claim 4, wherein the operating temperature of the second fuse is a value between 85 and 95 ℃.

6. The air conditioner according to claim 4, wherein the protector has an operating temperature of not less than 45 ℃, and

the operating temperature of the first fuse is at least 30 ℃ greater than the operating temperature of the protector.

7. The air conditioner according to any one of claims 2 to 6, wherein the heating assembly includes a heating bracket fixed to the mounting base and a heating element provided on the heating bracket,

wherein the heating holder is detachably provided to the mounting base.

8. The air conditioner according to claim 7, wherein the heating bracket includes a base frame including a vertical portion and a lateral portion extending from the vertical portion, wherein the protector and the first fuse are provided to the lateral portion.

9. The air conditioner according to claim 8, wherein a first mounting position and a second mounting position are formed on the lateral portion, and the protector and the first fuse are respectively provided at the first mounting position and the second mounting position.

10. The air conditioner according to any one of claims 2 to 6, wherein the second fuse is directly mounted to the mounting base, and

at least the temperature sensing side of the second fuse protrudes to the downstream side of the mounting substrate.

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