CN211925947U

CN211925947U - Air condensing units, air conditioner and air conditioning system

Info

Publication number: CN211925947U
Application number: CN202020631602.8U
Authority: CN
Inventors: 袁封明; 王义祥; 王成
Original assignee: Ningbo Aux Electric Co Ltd; Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd
Current assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-13
Anticipated expiration: 2030-04-23

Abstract

The embodiment provides an air conditioner outdoor unit, an air conditioner and an air conditioning system, and belongs to the technical field of air conditioners. The air conditioner outdoor unit comprises a shell, a defrosting heat exchanger and a main heat exchanger, wherein the defrosting heat exchanger and the main heat exchanger are both arranged in the shell; and, the defrosting heat exchanger is disposed at one side of the main heat exchanger. When a fan of the air conditioner outdoor unit sucks air, air outside the shell can be heated by the defrosting heat exchanger and then blown onto the main heat exchanger, and therefore the main heat exchanger is defrosted. The heat inside the defrost exchanger comes from the solar collector and therefore does not need to consume electrical energy. Due to the arrangement of the defrosting heat exchanger, when air flows through the defrosting heat exchanger from the outside of the shell, the air is heated and blown to the main heat exchanger, and the hot air heats and defrosts the main heat exchanger. In the whole defrosting process, the main heat exchanger normally works so as to realize defrosting under the condition of no shutdown.

Description

Air condensing units, air conditioner and air conditioning system

Technical Field

The utility model relates to an air conditioner technical field particularly, relates to an air condensing units, air conditioner and air conditioning system.

Background

The heat exchanger of the air conditioner outdoor unit is frosted, so that the heat exchange efficiency is greatly reduced, and the frosting phenomenon is more serious especially when the air temperature is 0-3 ℃; one of the common defrosting modes of the air conditioner is reverse defrosting, in which a fan stops working during defrosting, and a refrigerant absorbs heat from an indoor unit, is changed into high-temperature and high-pressure gas by a compressor, and then enters an outdoor unit for defrosting. In the process, the indoor unit stops working, indoor heat is absorbed, and user experience is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-improved technical problem of the utility model lies in that an outdoor unit that does not influence the normal work of air conditioner during defrosting is provided.

In order to solve the above problems, the present invention provides an air conditioner outdoor unit, which includes a casing, a defrosting heat exchanger and a main heat exchanger, wherein the defrosting heat exchanger and the main heat exchanger are both connected to the casing; the defrosting heat exchanger is arranged on one side of the main heat exchanger;

air outside the housing can be blown onto the main heat exchanger through the defrost heat exchanger.

Due to the arrangement of the defrosting heat exchanger, when air flows through the defrosting heat exchanger from the outside of the shell, the air is heated and blown to the main heat exchanger, and the hot air heats and defrosts the main heat exchanger. In the whole defrosting process, the main heat exchanger normally works so as to realize defrosting under the condition of no shutdown.

Further, the housing includes a housing body in which the primary heat exchanger is mounted, the housing body including a side air intake; the defrosting heat exchanger is arranged at the air inlet of the side part.

The main heat exchanger is sealed in the shell body through the design, so that the influence of the external environment on the normal work of the main heat exchanger is reduced; and, will defrost the heat exchanger setting in lateral part air intake department, when the fan in the casing body induced draft, the outside wind energy of lateral part air intake was inhaled on the main heat exchanger after can directly being heated.

Furthermore, the shell further comprises an enclosing cylinder, the enclosing cylinder is arranged outside the side air inlet, the first end of the enclosing cylinder is connected with the shell body, and the defrosting heat exchanger is arranged in the enclosing cylinder.

Further, a rear side air inlet is formed in the rear side of the shell body.

The air inlet at the rear side is arranged, so that the air inlet amount is larger, and the refrigerating and heating effects are improved.

Further, an air inlet control mechanism is arranged at the position of the rear air inlet and used for opening or closing the rear air inlet.

When defrosting is needed, the air inlet at the rear side is closed, so that the air conditioner outdoor unit only sucks air from the air inlet at the side part; and the air coming from the side air inlet is hot air heated by the defrosting heat exchanger, so that the main heat exchanger can be effectively defrosted.

Further, the air inlet control mechanism is of a shutter structure.

The air inlet control mechanism is designed into a shutter structure, which is convenient for controlling the opening and closing of the air inlet at the rear side; and it occupies a small space.

Further, the defrosting heat exchanger is of a serpentine tubular structure.

Adopt above-mentioned structure, it can make heat exchange efficiency higher, and then improves the defrosting effect.

Drawings

Fig. 1 is a schematic structural diagram of an air conditioner outdoor unit according to the present application;

FIG. 2 is a side view of the intake air control structure provided herein in an open state;

FIG. 3 is a front view of the air intake control structure provided by the present application in a closed state;

fig. 4 is a schematic diagram of an air conditioning system provided by the present application.

Icon:

100-an air conditioner outdoor unit; 110-a housing; 112-a housing body; 1121-side air inlet; 1122-rear side air inlet; 114-enclosure cylinder; 120-a defrost heat exchanger; 130-a primary heat exchanger; 200-an air conditioning system; 210-a solar collector; 220-a water storage tank; 221-an electric heater; 230-a water pump; 240-first solenoid valve; 250-second electromagnetic valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Example 1:

when the air conditioner heats, the heat exchanger of the outdoor unit is easy to frost; and the frosting of the heat exchanger can greatly reduce the heat exchange effect. Common defrosting methods include electrical heating defrosting, reverse defrosting, or hot gas bypass defrosting; the above-mentioned defrosting method has the following disadvantages:

the electric heating defrosting needs additional consumption of electric energy to increase the use cost of users. When the defrosting is carried out reversely, the fan stops working, the refrigerant absorbs heat from the indoor unit, and after being changed into high-temperature and high-pressure gas by the compressor, the high-temperature and high-pressure gas enters the outdoor unit for defrosting; in the process, the indoor unit stops working, indoor heat is absorbed, and user experience is poor. By adopting hot gas bypass defrosting, although the operation can be realized without stopping the machine, the method leads the exhaust gas of the compressor to be bypassed to the outer machine for defrosting, thereby consuming energy and influencing the heating performance.

In view of this, the present embodiment provides a novel outdoor unit 100 of an air conditioner, which can defrost without stopping the air conditioner, and has less power consumption and no influence on the heating performance of the air conditioner.

Referring to fig. 1, an outdoor unit 100 of an air conditioner provided in the present embodiment includes a casing 110, a defrosting heat exchanger 120 and a main heat exchanger 130, wherein the defrosting heat exchanger 120 and the main heat exchanger 130 are both installed in the casing 110; also, the defrost heat exchanger 120 is disposed at one side of the main heat exchanger 130. When the fan of the outdoor unit 100 sucks air, the air outside the casing 110 is heated by the defrosting heat exchanger 120 and then blown onto the main heat exchanger 130, thereby defrosting the main heat exchanger 130. The heat inside the defrost heat exchanger 120 comes from the solar collector 210, and thus, in case of sufficient solar energy, it does not need to consume electric power.

Specifically, the housing 110 mainly includes a housing body 112 and a surrounding cylinder 114. The casing body 112 has a shape and a structure similar to those of the conventional outdoor unit casing 110, and a rear air inlet 1122 is also provided at the rear side of the casing body 112, except that a side air inlet 1121 is further provided at one side plate of the casing body 112. The enclosure cylinder 114 is a square cylindrical structure supported by a galvanized plate, and one end of the enclosure cylinder 114 is connected with the side plate; thereby forming an air inlet channel. And the auxiliary heat exchanger is disposed in the enclosure cylinder 114 and connected to the inner wall of the enclosure cylinder 114.

The above design makes the outdoor unit main machine part located in the casing body 112, and the auxiliary heat exchanger is arranged outside the casing body 112; the auxiliary heat exchanger can be prevented from occupying the space in the shell body 112, and the influence of the auxiliary heat exchanger on the normal work of the outdoor unit main machine is reduced. After the enclosure cylinder 114 is arranged, the external air can enter the enclosure cylinder 114 only from the end air inlet of the enclosure cylinder 114, and is heated by the auxiliary heat exchanger and then sucked into the casing body 112 through the side air inlet 1121 of the casing body 112; thereby heating and defrosting the main heat exchanger 130. Therefore, the design of the enclosure tube 114 can prevent cold air from entering the housing body 112 through the side air inlets 1121, so as to improve the defrosting effect.

The rear air inlet 1122 of the housing body 112 is further provided with an air inlet control mechanism capable of controlling opening and closing of the rear air inlet 1122. When the air conditioner is started, if the air conditioner is not in the heating mode, the air inlet control mechanism is in an open state; when heating is performed, the rear air inlet 1122 is closed when the defrosting mode is entered, and it is possible to prevent cold air from being introduced through the rear air inlet 1122, so that external air can be sucked only after being heated by the auxiliary heater. When defrosting is not required, the rear air inlet 1122 is opened; it allows external air to enter through both the side air inlets 1121 and the rear air inlets 1122, thereby increasing the intake air amount. When the air conditioner is turned off, the rear air inlet 1122 is closed by the air inlet control mechanism, so that dust can be prevented from entering.

Referring to fig. 2 and 3, the air intake control mechanism in this example employs a louver structure; the device has the advantages of simple structure, convenient operation and small occupied space. In other embodiments, a sliding door or the like can be adopted.

In order to provide the heat exchange effect of the auxiliary heat exchanger, the auxiliary heat exchanger adopts a snake-shaped copper pipe structure, and the copper pipe and the fin structure increase the heat dissipation area.

Example 2:

referring to fig. 4, the present embodiment provides an air conditioning system 200, which includes a solar heat collector 210 and the outdoor unit 100 of embodiment 1, wherein the solar heat collector 210 is communicated with the defrosting heat exchanger 120 through a pipeline, so as to provide heat energy for the defrosting heat exchanger 120.

Specifically, the air conditioning system 200 includes a solar heat collector 210, a water storage tank 220, an outdoor unit 100 of an air conditioner, and a water pump 230, wherein a water outlet end of the solar heat collector 210 is communicated with a water inlet end of the water storage tank 220, a water outlet end of the water storage tank 220 is communicated with a water inlet end of the defrosting heat exchanger 120, a water outlet end of the defrosting heat exchanger 120 is communicated with the water pump 230, and the water pump is communicated with a water inlet end of the solar heat collector 210. A first solenoid valve 240 is provided on a connection pipe between the solar collector 210 and the water storage tank 220, and a second solenoid valve 250 is provided on a connection pipe between the water storage tank 220 and the defrosting heat exchanger 120.

Further, the water storage tank 220 is a constant temperature water tank; the water storage tank 220 is further provided with an electric heater 221, and when the solar heat collector 210 cannot work normally due to insufficient solar supply, the electric heater 221 can be used for heating the water in the water storage tank 220.

The use method of the air conditioning system 200 provided by the embodiment is as follows:

when the air conditioner is in a refrigerating state, the heat exchanger is not easy to frost due to high external environment temperature; at this time, both the first solenoid valve 240 and the second solenoid valve 250 are closed; the defrost heat exchanger 120 does not need to operate. And when the air conditioner is in a heating state, the defrosting mode is started and judged according to the temperature of the coil. When the temperature T of the copper pipe of the heat exchanger is less than or equal to 0 ℃, entering a defrosting mode, and at this time, the rear side air inlet 1122 of the air conditioner outdoor unit 100 is in a closed state; the solar heat collector 210 is started to operate, if the water temperature is lower than T1, the electric heating is started to maintain the water temperature at T1, the defrosting mode is exited after the operation is performed for 10 minutes or the coil temperature is higher than T0, at this time, the rear air inlet 1122 of the housing body 112 is opened, and the second electromagnetic valve 250 is closed. When the temperature of the copper tube of the heat exchanger is more than T0, the defrosting mode is not entered.

Although the present invention is disclosed above, the present invention is not limited thereto. Various modifications may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications are intended to be within the scope of the invention.

Claims

1. An outdoor unit of an air conditioner, comprising a casing (110), a defrosting heat exchanger (120) and a main heat exchanger (130), wherein the defrosting heat exchanger (120) and the main heat exchanger (130) are both disposed in the casing (110); the defrost heat exchanger (120) is disposed on one side of the main heat exchanger (130);

air outside the housing (110) can be blown onto the main heat exchanger (130) through the defrost heat exchanger (120).

2. The outdoor unit of claim 1, wherein the casing (110) comprises a casing (110) body, the main heat exchanger (130) is installed in the casing (110) body, and the casing (110) body comprises a side air intake (1121);

the defrosting heat exchanger (120) is arranged at the side air inlet (1121).

3. The outdoor unit of claim 2, wherein the casing (110) further comprises a surrounding tube (114), the surrounding tube (114) is disposed outside the side air inlet (1121), a first end of the surrounding tube (114) is connected to the casing (110) body, and the defrosting heat exchanger (120) is disposed in the surrounding tube (114).

4. The outdoor unit of claim 2, wherein a rear air inlet (1122) is formed at a rear side of the body of the casing (110).

5. The outdoor unit of claim 4, wherein an air intake control mechanism is provided at the rear air intake (1122) to open or close the rear air intake (1122).

6. The outdoor unit of claim 5, wherein the intake air controlling means has a louver structure.

7. The outdoor unit of claim 1, wherein the defrosting heat exchanger (120) has a serpentine tubular structure.

8. An air conditioner characterized by comprising the outdoor unit (100) of any one of claims 1 to 7.

9. An air conditioning system (200) comprising a solar collector (210) and an outdoor unit of any one of claims 1 to 7, wherein the solar collector (210) is connected to the defrosting heat exchanger (120) and is capable of providing heat energy to the defrosting heat exchanger (120).

10. The air conditioning system (200) of claim 9, wherein the air conditioning system (200) further comprises a water storage tank (220) and a water pump (230), one end of the defrost heat exchanger (120) is in communication with the water storage tank (220) and the other end is in communication with the solar collector (210); the water storage tank (220) is also communicated with the solar heat collector (210); the water pump is arranged on a pipeline of the air conditioning system (200).

11. The air conditioning system (200) of claim 10, wherein an electric heater (221) is disposed within the storage tank (220).