CN215498756U - Commercial air conditioner - Google Patents
Commercial air conditioner Download PDFInfo
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- CN215498756U CN215498756U CN202121758766.8U CN202121758766U CN215498756U CN 215498756 U CN215498756 U CN 215498756U CN 202121758766 U CN202121758766 U CN 202121758766U CN 215498756 U CN215498756 U CN 215498756U
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- power supply
- commercial air
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Abstract
The present invention relates to a commercial air conditioner, comprising: the air conditioner comprises a power supply module and an air conditioner body; the power supply module comprises a sub power supply module, a first inverter and a second inverter; the air conditioner body comprises a fan and a compressor; the first end of the sub-power supply module is connected with an external power supply circuit, the second end of the sub-power supply module is respectively connected with the first end of the first inverter and the first end of the second inverter, the second end of the first inverter is connected with the compressor, and the second end of the second inverter is connected with the fan; the first inverter and the second inverter share a dc bus. The utility model provides a commercial air conditioner wiring is simple, and the cable use amount is few.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a commercial air conditioner.
Background
The commercial air conditioner is a general name of an air conditioning unit with power above 3 HP. At present, most of drivers of commercial air conditioners are full-direct-current variable-frequency drivers, and such commercial air conditioners can be further classified into commercial air conditioners with 220V input voltage and commercial air conditioners with 380V input voltage. The frequency conversion driving system of the commercial air conditioner with 380V input voltage is connected with an external three-phase 380V power supply and supplies power for other electric components of the commercial air conditioner. In the related art commercial air conditioner, the inverter driver is directly connected to four wires (U, V, W and PE) of an external three-phase 380V power source.
However, since the related art commercial air conditioner has the inverter drivers corresponding to the fans one-to-one, when the number of fans is plural, the number of inverter drivers is also plural, and each inverter driver is connected to the four-wire of the external three-phase 380V power supply, so that the related art commercial air conditioner is complicated in wiring and large in cable usage.
SUMMERY OF THE UTILITY MODEL
In view of the above, a commercial air conditioner is provided to solve the problems of complicated wiring and large cable usage of the related art commercial air conditioner.
The utility model adopts the following technical scheme:
a commercial air conditioner comprising: the air conditioner comprises a power supply module and an air conditioner body;
the power supply module comprises a sub power supply module, a first inverter and a second inverter; the air conditioner body comprises a fan and a compressor;
the first end of the sub-power supply module is connected with an external power supply circuit, the second end of the sub-power supply module is respectively connected with the first end of the first inverter and the first end of the second inverter, the second end of the first inverter is connected with the compressor, and the second end of the second inverter is connected with the fan;
the first inverter and the second inverter share a dc bus.
Preferably, the number of the second inverters is multiple, the number of the fans is multiple, and the second inverters correspond to the fans one by one.
Preferably, the number of the sub power supply modules is multiple, and the sub power supply modules are connected in parallel.
Preferably, the sub-power supply module is a charging pile module.
Preferably, the charging pile module consists of a three-phase PFC boosting circuit and a DC-DC isolation circuit.
Preferably, the three-phase PFC boost circuit is a three-phase vienna topology circuit.
Preferably, the DC-DC isolation circuit is a full-bridge LLC resonant circuit.
Preferably, the first inverter is a three-phase six-bridge inverter composed of IGBTs;
the second inverter is a three-phase six-bridge inverter composed of IGBTs.
Preferably, the compressor is a rotary compressor.
By adopting the technical scheme, the commercial air conditioner comprises the following components: the air conditioner comprises a power supply module and an air conditioner body; the power supply module comprises a sub power supply module, a first inverter and a second inverter; the air conditioner body comprises a fan and a compressor; the first end of the sub-power supply module is connected with an external power supply circuit, the second end of the sub-power supply module is respectively connected with the first end of the first inverter and the first end of the second inverter, the second end of the first inverter is connected with the compressor, and the second end of the second inverter is connected with the fan; the first inverter and the second inverter share a dc bus. Therefore, the first inverter and the second inverter of the commercial air conditioner are connected with the external power circuit through the sub-power supply module, so that the first inverter and the second inverter share the direct-current bus, the wiring of the commercial air conditioner is simple, and the using amount of cables is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic configuration diagram of a commercial air conditioner of the related art.
Fig. 2 is a schematic structural diagram of a commercial air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a schematic configuration diagram of a commercial air conditioner of the related art. As shown in fig. 1, each inverter driver of the commercial air conditioner of the related art is connected to an external three-phase 380V power source, so that the commercial air conditioner of the related art has complicated wiring and high cable usage.
Fig. 2 is a schematic structural diagram of a commercial air conditioner according to an embodiment of the present invention. As shown in fig. 2, the commercial air conditioner of the present embodiment includes: a power module 21 and an air conditioner body 22.
Wherein the power module 21 includes a sub power module 211, a first inverter 212, and a second inverter 213; the air conditioner body 22 includes a blower fan 221 and a compressor 222. A first end of the sub power module 211 is connected to an external power circuit, a second end of the sub power module 211 is connected to a first end of the first inverter 212 and a first end of the second inverter 213, respectively, a second end of the first inverter 212 is connected to the compressor 222, and a second end of the second inverter 213 is connected to the fan 221; the first inverter 212 and the second inverter 213 share a dc bus.
Specifically, the sub power module 211 may be a charging pile module in the prior art, for example, a charging module of a type MR750-60S in the prior art, or a charging module of a type MR750-35H in the prior art. The charging modules have the advantages of high power factor and low current distortion rate, so that the commercial air conditioner of the embodiment has corresponding advantages, the input current of the commercial air conditioner of the embodiment is further smaller, and the reliability of a preceding-stage cable and power equipment is high. Moreover, the charging module is adopted, so that the power factor of the commercial air conditioner of the embodiment can be ensured to be more than 0.99 and the current distortion rate is less than 0.05 no matter what the characteristics of the rear-stage load of the charging module.
In addition, in practical applications, the higher the rotational speed of the compressor of the commercial air conditioner, the greater the input voltage thereof. The output voltage range of the charging module is 200V-750V, and the output voltage range is adjustable. Therefore, the charging module can be set to output a high voltage value so as to improve the efficiency of the compressor driver and avoid the counter electromotive voltage generated when the compressor runs at a high speed from approaching the direct current bus voltage.
In addition, compare in prior art, this embodiment has saved electromagnetic compatibility (EMC) circuit, rectifier circuit and the filter circuit of driver for the driver of commercial air conditioner of this application is small, is favorable to driver and fan to adopt the integral type structure, makes things convenient for commercial air conditioner's overall arrangement. And, the above-mentioned charging module also has good electromagnetic compatibility, make the commercial air conditioner of this embodiment not need to increase EMC circuit alone, can reach the relevant certification requirement too.
The first inverter may be a three-phase six-bridge inverter composed of IGBTs, or a three-phase six-bridge inverter composed of IPM power modules. The second inverter is a three-phase six-bridge inverter composed of IGBTs, or a three-phase six-bridge inverter composed of IPM power modules.
The air conditioner body, the fan and the compressor are all in the prior art, and the structures of the air conditioner body, the fan and the compressor are not described again.
This embodiment adopts above technical scheme, a commercial air conditioner includes: the air conditioner comprises a power supply module and an air conditioner body; the power supply module comprises a sub power supply module, a first inverter and a second inverter; the air conditioner body comprises a fan and a compressor; the first end of the sub-power supply module is connected with an external power supply circuit, the second end of the sub-power supply module is respectively connected with the first end of the first inverter and the first end of the second inverter, the second end of the first inverter is connected with the compressor, and the second end of the second inverter is connected with the fan; the first inverter and the second inverter share a dc bus. Therefore, the first inverter and the second inverter of the commercial air conditioner are connected with the external power circuit through the sub-power supply module, so that the first inverter and the second inverter share the direct-current bus, the wiring of the commercial air conditioner is simple, and the using amount of cables is small.
Preferably, the number of the second inverters is multiple, the number of the fans is multiple, and the second inverters correspond to the fans one by one.
Preferably, the number of the sub power supply modules is multiple, and the sub power supply modules are connected in parallel.
Specifically, the output power of the single sub-power supply module is fixed, and when the output power of the single sub-power supply module is smaller than the input power of the commercial air conditioner, the input power requirement of the commercial air conditioner is met by connecting the plurality of sub-power supply modules in parallel.
Preferably, the sub-power supply module consists of a three-phase PFC boost circuit in the prior art and a DC-DC isolation circuit in the prior art.
Preferably, the three-phase PFC boost circuit is a three-phase vienna topology circuit in the prior art.
Preferably, the DC-DC isolation circuit is a full bridge LLC resonant circuit of the prior art.
Preferably, the compressor can be a rotary compressor in the prior art, and can also be other compressors in the prior art which can meet the requirements of the application.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A commercial air conditioner, comprising: the air conditioner comprises a power supply module and an air conditioner body;
the power supply module comprises a sub power supply module, a first inverter and a second inverter; the air conditioner body comprises a fan and a compressor;
the first end of the sub-power supply module is connected with an external power supply circuit, the second end of the sub-power supply module is respectively connected with the first end of the first inverter and the first end of the second inverter, the second end of the first inverter is connected with the compressor, and the second end of the second inverter is connected with the fan;
the first inverter and the second inverter share a dc bus.
2. The commercial air conditioner according to claim 1, wherein the number of the second inverters is plural, the number of the fans is plural, and the second inverters correspond to the fans one by one.
3. The commercial air conditioner according to claim 1, wherein the number of the sub power supply modules is plural, and the sub power supply modules are connected in parallel.
4. The commercial air conditioner of claim 1, wherein the sub power supply module is a charging pile module.
5. The commercial air conditioner of claim 4, wherein the charge stake module is comprised of a three-phase PFC boost circuit and a DC-DC isolation circuit.
6. The commercial air conditioner of claim 5, wherein the three-phase PFC boost circuit is a three-phase Vienna topology circuit.
7. The commercial air conditioner of claim 5, wherein the DC-DC isolation circuit is a full bridge LLC resonant circuit.
8. The commercial air conditioner according to claim 1, wherein the first inverter is a three-phase six-bridge inverter composed of IGBTs;
the second inverter is a three-phase six-bridge inverter composed of IGBTs.
9. The commercial air conditioner of claim 1, wherein the compressor is a rotary compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121758766.8U CN215498756U (en) | 2021-07-30 | 2021-07-30 | Commercial air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121758766.8U CN215498756U (en) | 2021-07-30 | 2021-07-30 | Commercial air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498756U true CN215498756U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121758766.8U Active CN215498756U (en) | 2021-07-30 | 2021-07-30 | Commercial air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498756U (en) |
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2021
- 2021-07-30 CN CN202121758766.8U patent/CN215498756U/en active Active
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