CN210638193U - Variable frequency air conditioner and outdoor unit thereof - Google Patents

Abstract

The utility model provides a variable frequency air conditioner and off-premises station thereof, wherein the off-premises station includes the casing, set up the electrical apparatus part in the casing, main capillary and vice capillary, electrical apparatus part has the electron and generates heat the piece, main capillary is used for being connected the outdoor heat exchanger of air conditioner with indoor heat exchanger, vice capillary is established ties with main capillary, and extend to electron and generate heat a department, with the refrigerant cooling electron that utilizes in the vice capillary and generate heat the piece, because refrigeration heating working condition promotes the radiating influence of electron heating piece less to vice capillary, need not to set up the check valve, the production cost is reduced, and the cooperation debugging of system's operating mode is easier.

Description

Variable frequency air conditioner and outdoor unit thereof

Technical Field

The utility model relates to an air treatment technical field especially relates to a variable frequency air conditioner and off-premises station thereof.

Background

In high temperature environment in summer, the electronic heating components on the electric appliance components of the outdoor unit of the variable frequency air conditioner need to be cooled in time, and if the electronic heating components have poor heat dissipation, the refrigerating capacity of the air conditioner can be seriously influenced. The electronic heating element generally comprises a chip of a computer board, a reactor and the like, and if the chip of the computer board is poor in heat dissipation, the problems of slow and difficult refrigeration frequency rise, easy error reporting of control logic, insufficient refrigeration capacity, large running power consumption and the like can be caused. The electric reactor is fixed on the inner side of the casing of the outdoor unit of the air conditioner outside the computer board, and is responsible for enabling the current inversion link to run more stably and improving the power factor of the frequency converter, and the improvement of the refrigerating capacity of the air conditioning system can be seriously influenced by poor heat dissipation of the electric reactor.

At present, there is no heat dissipation mode for the reactor, and there are two main schemes for heat dissipation of the computer board chip, one of which is to introduce the refrigerant circulation pipeline to the aluminum heat dissipation plate of the computer board to transfer the heat of the chip to the refrigerant pipeline, but because the refrigeration and heating cycle of the air conditioner is reversed, in order to cool the chip, the system debugging is difficult, and the cost of the pipeline and the valve is increased. The other scheme is that the air quantity of the outdoor fan is led to the computer board, the temperature of the chip is reduced through heat convection, and the cooling effect is poor.

Disclosure of Invention

An object of the utility model is to provide a frequency conversion air conditioner that electron heating element radiating effect is good and off-premises station thereof.

A further object of the present invention is to simplify the system debugging and to reduce the production costs.

Particularly, the utility model provides an at first the outdoor machine of frequency conversion air-conditioner, it includes:

a housing;

the electrical component is arranged in the upper shell and is provided with an electronic heating element;

the main capillary tube is used for connecting an outdoor heat exchanger and an indoor heat exchanger of the air conditioner;

and the auxiliary capillary tube is connected with the main capillary tube in series and extends to the electronic heating part so as to cool the electronic heating part by utilizing a refrigerant in the auxiliary capillary tube.

Optionally, the electronic heating element comprises a computer board with a chip and a reactor arranged at an interval with the computer board;

the secondary capillary includes:

the first branch capillary is connected with the main capillary in series and extends to the lower part of the chip so as to cool the chip by using a refrigerant in the first branch capillary;

and the second branch capillary tube is connected with the main capillary tube in series and extends to the lower part of the reactor so as to cool the reactor by using the refrigerant in the second branch capillary tube.

Optionally, the outer diameter of the primary capillary is 2.8mm to 3.2 mm.

Optionally, the outer diameters of the first branch capillary and the second branch capillary are both 3.0mm to 3.5 mm.

Optionally, the secondary capillary further includes a main branch capillary, a head end of the main branch capillary is connected to the main capillary, and a tail end of the main branch capillary is connected to the first branch capillary and the second branch capillary respectively.

Optionally, the main branch capillary tube is connected with one end of the main capillary tube connected with the outdoor heat exchanger.

Optionally, the outside diameter of the total branch capillary is 3.0mm to 3.5 mm.

Optionally, the first branch capillary, the second branch capillary, the main branch capillary and the main capillary are designed in an integrated manner.

Optionally, the outdoor unit further includes:

and the compressor is arranged in the shell and is sequentially connected with the indoor heat exchanger, the main capillary tube and the outdoor heat exchanger.

The utility model also provides a variable frequency air conditioner, the off-premises station including indoor heat exchanger and above-mentioned arbitrary.

The utility model discloses an outer machine of frequency conversion air-conditioner is through addding the vice capillary of establishing ties with main capillary, utilizes the refrigerant in the vice capillary to absorb the heat that the electron generated heat piece, because refrigeration heating working condition promotes the radiating influence of electron generation piece less to vice capillary, need not to set up the check valve, has reduced manufacturing cost, and the debugging in coordination of system's operating mode is easier.

Further, the utility model discloses an among the variable frequency air conditioner machine, draw forth two branches (first branch capillary and second branch capillary) from main capillary, form crotch form branch, rely on the chip, the inside refrigerant self-loopa of two branches of drive respectively that generates heat of reactor, because branch road self-loopa route is narrow, branch road and main road form the refrigerant circulation of low discharge, need not increase the governing valve, and the cost is reduced, and the chip, the reactor generate heat less to the disturbance influence of refrigerant system, the cooperation debugging of system's operating mode is easier, and the pipe connection is simple, it is more convenient to produce.

Further, the utility model discloses an among the variable frequency air conditioner outdoor unit, the pipe diameter of main capillary, first branch road capillary, second branch road capillary has all carried out the design of thickening, not only the big density heat dissipation thermal current of applicable chip, reactor, but also can reduce the production degree of difficulty and the precision of capillary, reduce the defective rate to reduction in production cost.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view showing the structure of each component of an outdoor unit of a variable frequency air conditioner according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic view showing the structure of components of an outdoor unit for an air conditioner according to an embodiment of the present invention.

The outdoor unit of the frequency conversion air conditioner comprises a shell, a compressor 150, an outdoor heat exchanger 120, a four-way valve 160, electrical components, a main capillary tube 101 and the like, wherein the compressor 150 is arranged in the shell, the compressor 150 is sequentially connected with the indoor heat exchanger 110, the main capillary tube 101 and the outdoor heat exchanger 120 of the air conditioner through refrigerant pipelines, the four-way valve 160 is arranged on the refrigerant pipeline among the compressor 150, the outdoor heat exchanger 120 and the indoor heat exchanger 110, and the four-way valve 160 is used for changing the flow direction of the refrigerant and meeting the switching requirement of refrigeration in. Since the cooling/heating principle of the air conditioner is well known to those skilled in the art, it will not be described herein.

The electrical components are provided with electronic heating elements, and the main capillary tube 101 is used for connecting the outdoor heat exchanger 120 and the indoor heat exchanger 110 of the air conditioner, so that the functions of throttling and reducing pressure are achieved. Particularly, the outdoor unit of this embodiment further includes a secondary capillary tube connected in series with the main capillary tube and extending to the electronic heating element, so as to utilize the refrigerant in the secondary capillary tube to absorb the heat of the electronic heating element and cool the electronic heating element.

In the refrigeration/heating cycle, the capillary tubes play a throttling role, can absorb heat and equivalently realize the throttling expansion effect of the refrigerant, so that the influence of the refrigeration and heating conditions on the auxiliary capillary tube for promoting the heat dissipation of the electronic heating element is small, a check valve is not required to be arranged, the production cost is reduced, and the cooperative debugging of the system working conditions is easier.

The electronic heating element comprises a computer board 130 with a chip 107 and a reactor 106 arranged at a distance from the computer board 130, the reactor 106 is arranged on a reactor base 140, the secondary capillary comprises a first branch capillary 102 and a second branch capillary 103, the first branch capillary 102 is connected with the main capillary 101 in series and extends to the lower part of the chip 107 of the computer board 130 so as to cool the chip 107 by using a refrigerant in the first branch capillary 102, and the second branch capillary 103 is connected with the main capillary 101 in series and extends to the lower part of the reactor 106 so as to cool the reactor 106 by using a refrigerant in the second branch capillary 103. That is to say, two branches (a first branch capillary tube 102 and a second branch capillary tube 103) are led out from a main capillary tube 101 to form a fork-shaped branch instead of a parallel passage, the tail ends of the branches are welded, and the refrigerant self-circulation inside the two branches is driven by the heat generated by the chip 107 and the reactor 106 respectively (from the branch to the main line and then from the main line to the branch, the refrigerant phase change and the pressure change to form the refrigerant density difference self-circulation).

In some embodiments, the outer diameter of the primary capillary may be 2.8mm to 3.2 mm. The external diameter of traditional capillary is 2.7mm to 3.0mm generally, and the off-premises station of this embodiment not only is adaptable to the large density heat dissipation heat flow of chip 107, reactor 106 through increasing the external diameter of main capillary, but also can reduce the production degree of difficulty and the precision of capillary, and then reduction in production cost.

In some embodiments, the outer diameters of the first branch capillary tube 102 and the second branch capillary tube 103 can be 3.0mm to 3.5mm, and for the outer diameter of the traditional capillary tube, in the embodiment, the tube diameters of the two branch capillary tubes are obviously increased, the heat dissipation area is increased, the heat dissipation effect is improved, the refrigerant throttling effect can be achieved, the production difficulty and the precision of the two branch capillary tubes can also be reduced, the reject ratio is reduced, and therefore the production cost is further reduced.

In the embodiment shown in the drawings, the secondary capillary further includes a main branch capillary 104, the head end of the main branch capillary 104 is connected with the main capillary 101, and the tail end of the main branch capillary is respectively connected with the first branch capillary 102 and the second branch capillary 103, so that the main branch capillary 104 extends towards the direction close to the computer board 130 and the reactor 106, and then two branches are led out from the close area, which can shorten the length of the two branches, so that the distribution of the capillary as a whole is more orderly, and the occupied space is saved.

The main branch capillary 104 is connected with one end of the main capillary 101 connected with the outdoor heat exchanger 120, so that the main branch capillary 104 is led out from the main capillary 101 at a position closer to the outdoor heat exchanger 120 of the electronic heating element, the length of the main branch capillary 104 can be shortened, the cost is reduced, and the space occupation is saved.

The outer diameter of the total branch capillary 104 can also be 3.0mm to 3.5mm, so as to further reduce the production difficulty and precision of the capillary and reduce the production cost.

The first branch capillary 102, the second branch capillary 103, the total branch capillary 104 and the main capillary 101 can be designed integrally, so that the overall manufacturing process of the capillary is simplified, and the pipeline complexity caused by the need of adding a connecting structure among the independent capillaries can be avoided.

The embodiment further provides an inverter air conditioner, which comprises an indoor heat exchanger 110 and the outdoor unit of any one of the embodiments. The variable frequency air conditioner of this embodiment, the radiating effect of the electron heating member of off-premises station is better, and the refrigerating capacity of air conditioner obtains greatly promoting.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. An outdoor unit of a variable frequency air conditioner, comprising:

a housing;

the electrical component is arranged in the upper shell and is provided with an electronic heating element;

the main capillary tube is used for connecting an outdoor heat exchanger and an indoor heat exchanger of the air conditioner;

and the auxiliary capillary tube is connected with the main capillary tube in series and extends to the electronic heating part so as to cool the electronic heating part by utilizing a refrigerant in the auxiliary capillary tube.

2. The outdoor unit of claim 1, wherein

The electronic heating element comprises a computer board with a chip and a reactor arranged at an interval with the computer board;

the secondary capillary includes:

the first branch capillary is connected with the main capillary in series and extends to the lower part of the chip so as to cool the chip by using a refrigerant in the first branch capillary;

and the second branch capillary tube is connected with the main capillary tube in series and extends to the lower part of the reactor so as to cool the reactor by using the refrigerant in the second branch capillary tube.

3. The outdoor unit of claim 2, wherein

The outer diameter of the main capillary tube is 2.8mm to 3.2 mm.

4. The outdoor unit of claim 3, wherein

The outer diameters of the first branch capillary and the second branch capillary are both 3.0mm to 3.5 mm.

5. The outdoor unit of claim 2, wherein

The secondary capillary tube also comprises a main branch capillary tube, the head end of the main branch capillary tube is connected with the main capillary tube, and the tail end of the main branch capillary tube is respectively connected with the first branch capillary tube and the second branch capillary tube.

6. The outdoor unit of claim 5, wherein

And the main branch capillary tube is connected with one end of the main capillary tube, which is connected with the outdoor heat exchanger.

7. The outdoor unit of claim 5, wherein

The outer diameter of the total branch capillary is 3.0mm to 3.5 mm.

8. The outdoor unit of claim 5, wherein

The first branch capillary, the second branch capillary, the main branch capillary and the main capillary are designed in an integrated manner.

9. The outdoor unit of claim 8, further comprising:

and the compressor is arranged in the shell and is sequentially connected with the indoor heat exchanger, the main capillary tube and the outdoor heat exchanger.

10. An inverter air conditioner, comprising:

the outdoor unit of any one of claims 1 to 9; and

an indoor heat exchanger.

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