CN216481291U - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN216481291U
CN216481291U CN202122974015.6U CN202122974015U CN216481291U CN 216481291 U CN216481291 U CN 216481291U CN 202122974015 U CN202122974015 U CN 202122974015U CN 216481291 U CN216481291 U CN 216481291U
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China
Prior art keywords
heat exchanger
water
flow path
refrigerant
air conditioner
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Application number
CN202122974015.6U
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Chinese (zh)
Inventor
王远鹏
周洋
张德凯
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Abstract

The utility model discloses an air conditioner, which comprises a compressor, an outdoor heat exchanger, a fluorine water heat exchanger and a four-way valve, wherein the fluorine water heat exchanger is provided with a first heat exchange flow path and a second heat exchange flow path which exchange heat with each other, and the first heat exchange flow path is used for flowing and exchanging heat of a refrigerant; the output end of the second heat exchange flow path is provided with a water pump which is used for conveying the fluid passing through the second heat exchange flow path; the four-way valve comprises four connecting ports and is used for realizing connection of the compressor with the fluorine water heat exchanger and the outdoor heat exchanger, when the air conditioner meets defrosting conditions, the water pump arranged at the output end of the second heat exchange flow path of the fluorine water heat exchanger is closed, at the moment, the refrigerant flowing through the fluorine water heat exchanger heats static low-temperature water in the second heat exchange flow path of the fluorine water heat exchanger, the temperature rise of the water side is quickly improved, the temperature rise enables the condensation temperature of the refrigerant in the fluorine water heat exchanger to rise, after defrosting, the flash energy is obviously reduced, and in the state, the temperature of water is higher, and freezing is not easy to occur.

Description

Air conditioner
Technical Field
The utility model belongs to the technical field of air conditioners, and particularly relates to an air conditioner.
Background
Air conditioners are household appliances commonly used in daily life of people, and are divided into wall-mounted air conditioners and cabinet air conditioners. Among them, the air conditioner generally includes an indoor unit installed at an indoor side and an outdoor unit installed at an outdoor side.
In the prior art, an air conditioner generally comprises a compressor, a throttling device and an outdoor heat exchanger, in order to enrich the use function of the air conditioner, a part of the air conditioner is also provided with a refrigerant water heat exchanger, the refrigerant water heat exchanger can increase the function of the air conditioner for producing hot water, part of refrigerant output by the compressor enters the refrigerant water heat exchanger, and fluid passing through the other flow path is heated to obtain hot water, so that the use and even heating of people are met.
When the water is heated, when the water temperature is low, a large amount of refrigerant can be accumulated in the refrigerant water heat exchanger, at the moment, if defrosting occurs, even if an expansion valve in front of the refrigerant water heat exchanger is closed, the interior of the refrigerant water heat exchanger is switched from a high-pressure side to a low-pressure side due to reasons such as four-way reversing, the refrigerant accumulated in the refrigerant water heat exchanger can flash, so that the temperature of the refrigerant in the refrigerant water heat exchanger is rapidly reduced, and flowing water has the risk of freezing.
Disclosure of Invention
The utility model aims to provide an air conditioner, which aims to solve the problems that in the prior art, in a defrosting state, a refrigerant in a refrigerant water heat exchanger is accumulated, in a low-pressure state, the temperature of the refrigerant is reduced due to the flash of the refrigerant, heat exchange water is in a risk of freezing, the working effect of the air conditioner is influenced, and the like.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
an air conditioner, comprising:
a compressor for compressing a refrigerant;
the outdoor heat exchanger is used for refrigerant flowing heat exchange;
the fluorine water heat exchanger is provided with a first heat exchange flow path and a second heat exchange flow path which exchange heat with each other, and the first heat exchange flow path is used for flowing and exchanging heat of a refrigerant; the output end of the second heat exchange flow path is provided with a water pump for conveying the fluid passing through the second heat exchange flow path;
the four-way valve comprises four connecting ports, an exhaust port of the compressor is connected with a connecting port D of the four-way valve, and a return air port of the compressor is connected with a connecting port S of the four-way valve; the first heat exchange flow path is connected with a connecting port E of the four-way valve, and the outdoor heat exchanger is connected with a connecting port C of the four-way valve.
In some embodiments of the present application, a temperature detection device is connected to the fluorine water heat exchanger, and is configured to detect a temperature of a fluid in the second heat exchange flow path of the fluorine water heat exchanger.
In some embodiments of the present application, a first pipeline for connecting the four-way valve and the fluorine-water heat exchanger is provided with a first stop valve.
In some embodiments of the present application, a second stop valve is disposed on a second pipeline connecting the fluorine-water heat exchanger and the outdoor heat exchanger.
In some embodiments of the present application, the system further comprises at least one indoor heat exchanger, each indoor heat exchanger is connected in parallel with the fluorine water heat exchanger, and two ends of each indoor heat exchanger are respectively connected to the first pipeline and the second pipeline through connecting branch pipes.
In some embodiments of the present application, a valve is further disposed on the branch connecting pipe between the first pipeline and the indoor heat exchanger, and the valve is used for controlling an amount of refrigerant flowing into the indoor heat exchanger.
In some embodiments of the present application, a first expansion valve is further disposed between the second shutoff valve and the outdoor heat exchanger.
In some embodiments of the present application, a second expansion valve is further provided at an output end of each of the indoor heat exchangers.
In some embodiments of the present application, a third expansion valve is connected to an output end of the fluorine-water heat exchanger.
Compared with the prior art, the utility model has the advantages and positive effects that:
when the air conditioner meets the defrosting condition, the water pump arranged at the output end of the second heat exchange flow path of the fluorine-water heat exchanger is turned off, at the moment, the refrigerant flowing through the fluorine-water heat exchanger heats the static low-temperature water in the second heat exchange flow path of the fluorine-water heat exchanger, the temperature rise on the water side is quickly improved, the condensing temperature of the refrigerant in the fluorine-water heat exchanger is increased due to the increase of the water temperature, the quality of the refrigerant in the fluorine-water heat exchanger is reduced, and in the state, after the refrigerant enters the defrosting mode, the flash energy is obviously reduced, in the state, the temperature of the water is higher, the freezing is not easy to occur, the work of the air conditioner is not influenced, and the user can feel better.
Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an air conditioner according to the present invention;
fig. 2 is a schematic diagram illustrating a refrigerant conveying path of the air conditioner in a closed state of the indoor heat exchanger;
FIG. 3 is a schematic diagram of a refrigerant conveying path of the air conditioner in a state where both the indoor heat exchanger and the fluorine water heat exchanger are opened;
in the figure, the position of the upper end of the main shaft,
1. a compressor;
2. a four-way valve;
3. an outdoor heat exchanger;
4. a first expansion valve;
5. an indoor heat exchanger;
6. second expansion valve
7. A third expansion valve;
8. a fluorine-water heat exchanger;
9. a water pump;
10. a first pipeline;
11. a second pipeline;
12. connecting branch pipes;
21. a first shut-off valve;
22. a second stop valve.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
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, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
The present embodiment provides an air conditioner that performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.
The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor, an outdoor heat exchanger, and an outdoor fan, the indoor unit of the air conditioner includes a portion of an indoor heat exchanger and an indoor fan, and a throttling device (e.g., a capillary tube or an electronic expansion valve) may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner performs a heating mode when the indoor heat exchanger serves as a condenser, and performs a cooling mode when the indoor heat exchanger serves as an evaporator.
The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.
The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air which is blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.
The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.
In order to integrate the air conditioner with the function of providing hot water for users, the air conditioner can be connected with a refrigerant water heat exchanger besides an indoor heat exchanger and an outdoor heat exchanger, and water is heated by a refrigerant in the refrigerant water heat exchanger to realize the supply of hot water.
As shown in fig. 1, the present application provides an air conditioner, which includes a compressor 1, an outdoor heat exchanger 3, a fluorine water heat exchanger 8, and a four-way valve 2, wherein an output end of the compressor 1 is connected to the four-way valve 2.
The four-way valve 2 comprises four connecting ports, an exhaust port of the compressor 1 is connected with a connecting port D of the four-way valve 2, and a return air port of the compressor 1 is connected with a connecting port S of the four-way valve 2; the first heat exchange flow path is connected to a connection port E of the four-way valve 2, and the outdoor heat exchanger 3 is connected to a connection port C of the four-way valve 2.
The compressor 1 is used for compressing a refrigerant, and the outdoor heat exchanger 3 is used for allowing the refrigerant to flow and exchange heat; besides the outdoor heat exchanger 3, the indoor heat exchanger 5 is also included, and the indoor heat exchanger 5 can be opened or closed according to the requirement of a user so as to exchange heat according to the actual requirement.
The fluorine water heat exchanger 8 has a first heat exchange flow path and a second heat exchange flow path (not shown) for mutual heat exchange, the first heat exchange flow path is used for flowing heat exchange of a refrigerant, and the second heat exchange flow path is filled with flowing water, and the flowing water exchanges heat with the refrigerant, so that the heating purpose is realized.
In an actual use process, the outdoor heat exchanger 3 in the air conditioner outdoor unit is connected with the indoor heat exchanger 5 in the air conditioner indoor unit, and the second heat exchange flow path in the fluorine water heat exchanger 8 is connected with an indoor heat dissipation terminal (such as a floor heating device and a radiator), and the specific connection mode can refer to a conventional technology, and is not limited and described herein.
In order to avoid the phenomenon that water in the second heat exchange flow path freezes in the defrosting state, the output end of the second heat exchange flow path is provided with a water pump 9, and the water pump 9 is used for conveying fluid passing through the second heat exchange flow path, controlling the flow rate of water flow and controlling a switch.
The fluorine water heat exchanger 8 is connected with a temperature detection device for detecting the temperature of the fluid in the second heat exchange flow path in the fluorine water heat exchanger 8.
The temperature detection device detects the water temperature in the second heat exchange flow path N minutes before defrosting, if the water temperature is lower than T, the water pump 9 is closed, otherwise, the water pump 9 continues to operate.
The values of the detection time N and the detection water temperature T are preset values, which can be specifically set according to actual conditions, and specific numerical values thereof are not limited herein.
After the water pump 9 is turned off, the water flow in the second heat exchange flow path is static and does not flow any more, the refrigerant flowing through the fluorine water heat exchanger 8 heats the static low-temperature water in the second heat exchange flow path, the temperature rise on the water side is rapidly increased due to a certain water amount, the condensation temperature of the refrigerant in the fluorine water heat exchanger 8 is increased due to the increase of the water temperature, the quality of the refrigerant in the fluorine water heat exchanger 8 is reduced, in this state, after defrosting, the flash energy is obviously reduced, and in this state, the temperature of the water is high, and freezing is not easy to occur.
In the operation process of the outdoor unit of the air conditioner, according to different operation modes of the air conditioner, the indoor heat exchanger 5 and the fluorine water heat exchanger 8 or the outdoor heat exchanger 3 are communicated with the exhaust port of the compressor 1 by controlling the mutual communication action among different connecting ports in the four-way valve 2, so that the refrigeration or heating process is realized.
The four-way valve 2 is connected with the fluorine water heat exchanger 8 through a first pipeline 11, the fluorine water heat exchanger 8 and the outdoor heat exchanger 3 are connected through a second pipeline 12, a first stop valve 21 is arranged on the first pipeline 11, and a second stop valve 22 is arranged on the second pipeline 12.
The number of the indoor heat exchangers 5 is at least one, each indoor heat exchanger 5 is connected with the fluorine water heat exchanger 8 in parallel, and two ends of each indoor heat exchanger 5 are respectively connected to the first pipeline 11 and the second pipeline 12 through the connecting branch pipes 13.
And a valve is further arranged on the connecting branch pipe 13 between the first pipeline 11 and the indoor heat exchanger 5 and used for controlling the amount of the refrigerant flowing into the indoor heat exchanger 5, further distributing the proportion of the refrigerant flowing into the indoor heat exchanger 5 and the fluorine water heat exchanger 8 according to actual requirements, and controlling the heat exchange effect of the indoor heat exchanger 5 and the fluorine water heat exchanger 8.
A first expansion valve 4 is further arranged between the second stop valve 22 and the outdoor heat exchanger 3, a second expansion valve 6 is further arranged at the output end of each indoor heat exchanger 5, and a third expansion valve 7 is connected to the output end of the fluorine-water heat exchanger 8.
The specific heating process of the fluorine water heat exchanger 8 and the flow process of the refrigerant in this state will be described in detail below:
referring to fig. 2, in this state, the valve on the connecting branch pipe 13 connecting the indoor heat exchanger 5 is in a closed state, and no refrigerant flows through the indoor heat exchanger 5, which is in a non-operating state.
The fluorine water heat exchanger 8 provides hot water for a user, at the moment, a connecting port D in the four-way valve 2 is communicated with a connecting port E, a connecting port S is communicated with a connecting port C, a high-temperature and high-pressure refrigerant output by the compressor 1 passes through the four-way valve 2 and is conveyed into a first heat exchange flow path of the fluorine water heat exchanger 8 from a first pipeline 11, the high-temperature refrigerant in the first heat exchange flow path exchanges heat with water flow conveyed in a second heat exchange flow path to heat the water flow in the second heat exchange flow path, the water flow in the second heat exchange flow path is continuously conveyed under the driving of the water pump 9, and heated hot water is conveyed to the user and is used for geothermal heating or other daily use.
After heat exchange in the fluorine-water heat exchanger 8 is completed, the refrigerant is conveyed to the outdoor heat exchanger 3 through the second pipeline 12, exchanges heat through the outdoor heat exchanger 3, and then flows back to the compressor 1.
Referring to fig. 3, in this state, the valve on the connecting branch pipe 13 connecting the indoor heat exchanger 5 is in an open state, the amount of refrigerant entering the indoor heat exchanger 5 through the valve can be controlled by the opening degree of the valve, and both the indoor heat exchanger 5 and the fluorine water heat exchanger 8 are in a working state.
The fluorine water heat exchanger 8 provides hot water for users, and meanwhile, the indoor heat exchanger 5 serves as a condenser to heat indoor air; similarly, the connection port D of the four-way valve 2 is communicated with the connection port E, the connection port S is communicated with the connection port C, and after passing through the four-way valve 2, the high-temperature and high-pressure refrigerant output by the compressor 1 is partially conveyed to the first heat exchange flow path of the fluorine water heat exchanger 8 through the first pipeline 11, and the other part is conveyed to the indoor heat exchanger 5 through the connection branch.
The high-temperature refrigerant in the first heat exchange flow path exchanges heat with the water flow conveyed in the second heat exchange flow path to heat the water flow in the second heat exchange flow path, the water flow in the second heat exchange flow path is continuously conveyed under the driving of the water pump 9, and heated hot water is conveyed to a user for heating or using.
The indoor heat exchanger 5 serves as a condenser at this time, and heats the indoor air.
After heat exchange in the fluorine water heat exchanger 8 and the indoor heat exchanger 5 is completed, the refrigerant is conveyed to the outdoor heat exchanger 3 through the second pipeline 12, and flows back to the compressor 1 after heat exchange in the outdoor heat exchanger 3.
Because the output end of the second heat exchange flow path is provided with the water pump 9, in order to avoid the phenomenon that the refrigerant in the fluorine-water heat exchanger 8 is flashed and is frozen, the water pump 9 is closed under the condition that the defrosting condition is met, the water flow in the second heat exchange flow path does not flow any more, the refrigerant only needs to heat the static low-temperature water in the second heat exchange flow path, the freezing is not easy to occur, and the effect of protecting the air conditioner is achieved.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention shall be subject to the claims.

Claims (9)

1. An air conditioner, comprising:
a compressor for compressing a refrigerant;
the outdoor heat exchanger is used for refrigerant flowing heat exchange;
the fluorine water heat exchanger is provided with a first heat exchange flow path and a second heat exchange flow path which exchange heat with each other, and the first heat exchange flow path is used for flowing and exchanging heat of a refrigerant; the output end of the second heat exchange flow path is provided with a water pump for conveying the fluid passing through the second heat exchange flow path;
the four-way valve comprises four connecting ports, an exhaust port of the compressor is connected with a connecting port D of the four-way valve, and a return air port of the compressor is connected with a connecting port S of the four-way valve; the first heat exchange flow path is connected with a connecting port E of the four-way valve, and the outdoor heat exchanger is connected with a connecting port C of the four-way valve.
2. The air conditioner according to claim 1,
and the fluorine water heat exchanger is connected with a temperature detection device for detecting the temperature of the fluid in the second heat exchange flow path in the fluorine water heat exchanger.
3. The air conditioner according to claim 1,
and a first pipeline for connecting the four-way valve and the fluorine-water heat exchanger is provided with a first stop valve.
4. The air conditioner according to claim 3,
and a second stop valve is arranged on a second pipeline for connecting the fluorine water heat exchanger and the outdoor heat exchanger.
5. The air conditioner according to claim 4,
the indoor heat exchangers are connected with the fluorine water heat exchanger in parallel, and two ends of each indoor heat exchanger are connected to the first pipeline and the second pipeline through connecting branch pipes respectively.
6. The air conditioner according to claim 5,
and a valve is further arranged on the connecting branch pipe between the first pipeline and the indoor heat exchanger and used for controlling the amount of the refrigerant flowing into the indoor heat exchanger.
7. The air conditioner according to claim 4,
and a first expansion valve is also arranged between the second stop valve and the outdoor heat exchanger.
8. The air conditioner according to claim 5,
and the output end of each indoor heat exchanger is also provided with a second expansion valve.
9. The air conditioner according to claim 1,
and the output end of the fluorine-water heat exchanger is connected with a third expansion valve.
CN202122974015.6U 2021-11-30 2021-11-30 Air conditioner Active CN216481291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122974015.6U CN216481291U (en) 2021-11-30 2021-11-30 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122974015.6U CN216481291U (en) 2021-11-30 2021-11-30 Air conditioner

Publications (1)

Publication Number Publication Date
CN216481291U true CN216481291U (en) 2022-05-10

Family

ID=81401879

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122974015.6U Active CN216481291U (en) 2021-11-30 2021-11-30 Air conditioner

Country Status (1)

Country Link
CN (1) CN216481291U (en)

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