CN216282132U - Air conditioning system with radiator - Google Patents

Abstract

The utility model relates to the field of household air-conditioning systems, in particular to an air-conditioning system with a radiator, which comprises a compressor, an expansion valve, a first heat exchanger arranged in an outdoor unit, a second heat exchanger arranged in an indoor unit and a radiator connected with a frequency converter, wherein the first heat exchanger is connected with the compressor; the first heat exchanger, the second heat exchanger, the compressor and the expansion valve are connected through an air conditioner pipeline to form a basic loop of the air conditioner system; the radiator is connected in parallel to a basic loop between the first heat exchanger and the expansion valve only through a branch pipeline, and only in the refrigeration mode, the refrigerant flowing out of the first heat exchanger flows into the expansion valve after passing through the radiator. Compared with an air-cooled radiator, the air-conditioning system increases the refrigerant heat dissipation in the refrigeration mode, and strengthens the cooling effect of the down converter in the high-temperature environment in summer; compared with a liquid cooling radiator, the air conditioning system only utilizes a fin air cooling mode to radiate heat of the radiator in a low-temperature environment in winter, simplifies the connection structure of the radiator and reduces the comprehensive cost of the radiating system.

Description

Air conditioning system with radiator

Technical Field

The utility model relates to the field of household air conditioning systems, in particular to an air conditioning system with a radiator.

Background

At present, a plurality of heating components are arranged in the electric appliance, the heat of the heating components needs to be timely and effectively dissipated, and the use effect and the service life of the electric appliance can be influenced if the heat cannot be timely and effectively dissipated. In the field of electronic devices, in order to control the temperature of an electronic component within a proper temperature range, a heat sink is usually fixed on the surface of the electronic component, and fins on the heat sink diffuse heat outwards, thereby reducing the temperature of the electronic component. Or in the air conditioning field, the converter module plays a power conversion and enlargies effect in whole converter, wherein because switching loss and the resistance of module itself, can produce the heat in its working process, the unit power that the converter corresponds is big more moreover, calorific capacity is big more, if these heats are not in time dispelled, can influence module performance or even burn out the module.

At present, the common heat dissipation modes in the industry mainly include forced convection heat dissipation by fans, radiation heat dissipation by cooling fins, heat dissipation by cooling tubes and liquid cooling heat dissipation. In contrast, the liquid cooling heat dissipation method has the advantages of better heat dissipation effect and less generated noise. However, the existing liquid cooling heat dissipation mode mostly adopts a refrigerant pipeline and a heat dissipation plate type, the refrigerant pipeline is mostly connected into the air conditioning system, the heat source transfers heat to the heat dissipation plate, a copper pipe bearing the refrigerant of the main loop is buried in the heat dissipation plate, and finally the heat is taken away by the refrigerant in the copper pipe.

The prior structure of the radiator 5 connected to the air conditioning system is shown in fig. 1, the air conditioning system is connected with the evaporator, the condenser, the compressor 1 and the expansion valve 2 through the air conditioning pipelines, and the radiator 5 is connected to the air conditioning pipelines on the front side and the rear side of the expansion valve 2 through two branch pipelines b. According to the scheme, no matter in a summer refrigeration mode or a winter heating mode, the heat of the radiator 5 is taken away through the refrigerant flowing through the radiator 5. Specifically, in the summer refrigeration mode, the first heat exchanger 3 (outdoor) on the left side of fig. 1 is a condenser; in the winter heating mode, the second heat exchanger 4 (indoors) on the right side of fig. 1 is a condenser. In the two modes, the refrigerant is changed into high-temperature and high-pressure liquid after passing through the condenser, and the high-temperature and high-pressure liquid flows through the radiator 5 to carry away heat.

As shown in fig. 1, the air conditioning system must be equipped with four check valves, and at least two mutually independent and unconnected heat exchange channels need to be arranged in the radiator, i.e. the arrangement is very complicated; therefore, the comprehensive cost of the heat dissipation system of the air conditioner frequency converter is high.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an air conditioning system with a heat sink, which only ensures that a refrigerant dissipates heat of the heat sink in a cooling mode, simplifies a connection structure of the heat sink, and reduces the overall cost of the heat dissipating system; and because the heat exchange channel in the radiator is optimized, the heat dissipation effect of the air conditioning system on the radiator is better than that of the prior art even in a refrigeration mode.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an air conditioning system with a radiator comprises a compressor, an expansion valve, a first heat exchanger arranged in an outdoor unit, a second heat exchanger arranged in an indoor unit, and a radiator connected with a frequency converter; the first heat exchanger, the second heat exchanger, the compressor and the expansion valve are connected through an air conditioner pipeline to form a basic loop of the air conditioner system; the method is characterized in that: the radiator is connected in parallel to a basic loop between the first heat exchanger and the expansion valve only through a branch pipeline, and only in the refrigeration mode, the refrigerant flowing out of the first heat exchanger flows into the expansion valve after passing through the radiator.

The utility model adopts the technical scheme, and relates to an air conditioning system with a radiator. On the basis, the radiator in the scheme is only connected in parallel on a basic loop between the first heat exchanger and the expansion valve through branch pipelines, and compared with the traditional scheme that the radiator is respectively connected to the air-conditioning pipelines at the front side and the rear side of the expansion valve through two branch pipelines, the connection scheme of the scheme is only in a refrigeration mode, and refrigerant flowing out of the first heat exchanger can flow into the expansion valve after the heat of the radiator and a frequency converter connected with the radiator is taken away by the radiator; that is, in the cooling mode, heat can be dissipated by the refrigerant flowing through the heat sink. Compared with the prior art, the scheme that the radiator is connected between the second heat exchanger and the expansion valve in parallel is eliminated, and the main reason is that the environment temperature is low in winter, and the frequency converter can radiate heat to the environment through the radiator without the aid of a refrigerant.

Based on the change of the connection mode, the radiator in the system is only connected in one branch pipeline, only one heat exchange channel is constructed in the radiator, and complex channel arrangement is avoided; therefore, the heat exchange channel can be comprehensively arranged on the heat exchange surface, and the heat exchange efficiency is ensured.

Therefore, the air conditioning system only ensures that the refrigerant dissipates heat of the radiator in the refrigeration mode, simplifies the connection structure of the radiator and reduces the comprehensive cost of the heat dissipation system; and because the heat exchange channel in the radiator is optimized, the heat dissipation effect of the air conditioning system on the radiator is better than that of the prior art even in a refrigeration mode.

Preferably, a stop valve or a first one-way valve is arranged in a heat exchange channel in the radiator or a branch pipeline between the output end of the radiator and the expansion valve, and only the refrigerant is allowed to flow from the first heat exchanger to the expansion valve; and a stop valve or a second one-way valve is arranged in the basic loop between the two end parts of the branch pipeline, and only the refrigerant is allowed to flow to the first heat exchanger from the expansion valve. In order to implement the above scheme, the flow direction of the refrigerant between the first heat exchanger and the expansion valve needs to be controlled, and therefore, stop valves or check valves are arranged in both the two parallel lines, and the control can be performed. The stop valve is a valve which only has two states of opening or closing, and the one-way valve is a valve which only allows one-way flow.

In one embodiment, a flow limiting cavity is constructed inside the radiator, and a one-way valve core which moves axially is arranged in the flow limiting cavity; only when the one-way valve core is subjected to the impact pressure of fluid flowing to the radiator by the expansion valve, the one-way valve core presses against and seals one end cavity opening of the flow limiting cavity. The one-way valve core in the scheme only seals the flow-limiting cavity under the impact pressure of fluid flowing to the radiator by the expansion valve, so as to prevent the refrigerant from flowing; and the flow direction of the refrigerant passing through the first heat exchanger, the radiator and the expansion valve in sequence is not influenced.

In a specific embodiment, a plurality of ribs are circumferentially arranged on the side wall of the one-way valve core at intervals, and a flow passage is formed between every two adjacent ribs; the check valve core can move axially along the flow limiting cavity, the circumferential outer edge of a convex edge on the side wall of the check valve core is matched with the side wall of the flow limiting cavity, and the side wall of the end face of the check valve core can be in sealing and abutting contact with a cavity opening at one end of the flow limiting cavity. In the scheme, when the one-way valve core is only under the impact pressure of fluid flowing to the radiator by the expansion valve, the one-way valve core blocks one end cavity opening of the flow limiting cavity to prevent the refrigerant from flowing; when the refrigerant flows from the radiator to the expansion valve, the refrigerant can flow through the flow channel on the side wall of the one-way valve core without blocking the circulation of the refrigerant.

Preferably, the orifice of the flow limiting cavity is a conical orifice, and a conical surface which can abut against and be attached to the conical orifice is arranged at the end part of the one-way valve core; the scheme adopts conical abutting seal, so that the fault tolerance rate is higher, and the sealing performance is better.

Preferably, the flow limiting cavity is arranged at the output end of the flow channel in the radiator, a pipe joint is arranged outside the flow limiting cavity, and a branch pipeline is connected to the pipe joint; and when the branch pipeline is installed on the pipe joint, the outermost position of the one-way valve core, which moves along the axial direction of the flow limiting cavity, is limited. The heat exchange channel is required to be constructed in the radiator in the scheme, the flow limiting cavity in the scheme is the opening end of the heat exchange channel in the radiator, and the caliber of the flow limiting cavity is required to be larger than the diameter of the heat exchange channel, so that the one-way valve core matched with the caliber of the flow limiting cavity cannot enter the heat exchange channel; meanwhile, the relatively large caliber of the flow limiting cavity is also suitable for connecting branch pipelines, and when the pipe orifice of the branch pipeline is connected to the opening of the flow limiting cavity, the position of the outermost end of the one-way valve core, which moves along the axial direction of the flow limiting cavity, can be limited. Therefore, the radiator is only required to be enlarged at the inlet end of the heat exchange channel built in the original radiator, and the forming structure is very simple; and the method is also suitable for the reconstruction of the original radiator, namely, the inlet end of the heat exchange channel of the original radiator is flared to form a flow limiting cavity.

In another embodiment, a branch pipeline between the output end of the radiator and the expansion valve is embedded with a first one-way valve, and the first one-way valve comprises a valve body positioned in the branch pipeline and a one-way valve core movably arranged in a valve cavity of the valve body; when the one-way valve core is under the impact pressure of fluid flowing to the radiator by the expansion valve, the one-way valve core presses and seals the valve cavity. The first one-way valve in the scheme is arranged in a branch pipeline between the output end of the radiator and the expansion valve, is different from a traditional first one-way valve, is embedded in the branch pipeline, and is not required to be connected with two ends of the first one-way valve respectively after being segmented.

Preferably, a positioning groove is formed in the outer wall of the valve body of the first one-way valve, and a positioning convex ring corresponding to the positioning groove is arranged on the inner side of the pipe wall of the branch pipe. By adopting the structure, after the first one-way valve is arranged in the branch pipeline, the pipe wall of the branch pipeline is only required to be extruded to form the positioning convex ring and be clamped with the positioning groove on the outer wall of the valve body, and the installation and positioning of the first one-way valve can be realized.

In a specific embodiment, a passage port for communicating the internal valve cavity with an external branch pipeline is arranged on the valve body, the circumferential outer edge of the one-way valve core is matched with the side wall of the valve cavity, and the one-way valve core can seal a side cavity port of the valve cavity or the valve cavity between the side cavity port and the passage port; in the scheme, when the one-way valve core is under the impact pressure of fluid flowing to the radiator by the expansion valve, the one-way valve core moves to the valve cavity between the cavity opening and the channel opening, and at the moment, the refrigerant circulation can be stopped no matter the cavity opening is blocked or the valve cavity is blocked by the side wall; and when the fluid impact pressure of the first heat exchanger flowing to the radiator is received, the one-way valve core moves out of the valve cavity between the cavity opening and the channel opening, and the cavity opening is the same as the channel opening, so that the refrigerant circulation is realized.

Or a plurality of ribs are circumferentially arranged on the side wall of the one-way valve core at intervals, and a flow passage is formed between every two adjacent ribs; the check valve core can move along the axial direction of the valve cavity, the circumferential outer edge of a convex edge on the side wall of the check valve core is matched with the side wall of the valve cavity, and the side wall of the end face of the check valve core can be in sealing and abutting contact with an end cavity opening of the valve cavity. The structure of the scheme is the same as that of the first one-way valve in the flow limiting cavity, and the description is not repeated.

Preferably, the surface of the radiator is provided with radiating fins, and an air duct is formed between every two adjacent radiating fins. In the scheme, the ambient temperature is low in winter, the frequency converter can radiate heat to the environment through the radiator without the aid of a refrigerant, and therefore the scheme only ensures that the refrigerant radiates the radiator in the refrigeration mode. In this case, the surface of the radiator is provided with radiating fins, and an air duct is formed between two adjacent radiating fins; on the basis of radiation heat dissipation of the heat radiator, air cooling heat dissipation is increased.

Drawings

Fig. 1 is a schematic diagram of prior art air conditioning system connections.

Fig. 2 is a cooling mode walking diagram of an air conditioning system with a first structure related to the utility model.

Fig. 3 is a cooling mode walking diagram of an air conditioning system with a second structure according to the utility model.

Fig. 4 is a heating mode schematic diagram of an air conditioning system according to a second structure.

Fig. 5 is a perspective view of a heat sink according to a first structure.

Fig. 6 is a sectional view of the radiator internal flow passage in a closed state.

Fig. 7 is a sectional view of the radiator internal flow passage in an open state.

Fig. 8 is a structural schematic diagram of the check valve core.

Fig. 9 is a perspective view of a heat sink according to a second structure of the present invention.

Fig. 10 is a perspective view of a heat sink according to a third structure of the present invention.

Fig. 11 is a cross-sectional view of the heat sink of fig. 9.

Fig. 12 is an enlarged view of a portion a of fig. 11.

Fig. 13 is a schematic view of the first check valve shown in fig. 12 in a closed state.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

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 invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.

As shown in fig. 2 to 4, the present embodiment relates to an air conditioning system with a radiator, which includes a compressor 1, an expansion valve 2, a first heat exchanger 3 disposed in an outdoor unit, a second heat exchanger 4 disposed in an indoor unit, and a radiator 5 connected to an inverter. The first heat exchanger 3, the second heat exchanger 4, the compressor 1 and the expansion valve 2 are connected through an air-conditioning pipeline to form a basic loop a of the air-conditioning system. The radiator 5 is connected in parallel to the basic circuit a between the first heat exchanger 3 and the expansion valve 2 only through the branch pipe b, and only in the cooling mode, the refrigerant flowing out of the first heat exchanger 3 flows into the expansion valve 2 after passing through the radiator 5. In a specific embodiment, a stop valve or a first check valve 6 is disposed in a heat exchange channel inside the radiator 5 or a branch pipe b between an output end of the radiator 5 and the expansion valve 2, and only the refrigerant is allowed to flow from the first heat exchanger 3 to the expansion valve 2. A stop valve or a second check valve 60 is provided in the base circuit a between both end portions of the branch pipe b to allow only the refrigerant to flow from the expansion valve 2 to the first heat exchanger 3. In order to realize the scheme, the flow direction of the refrigerant between the first heat exchanger 3 and the expansion valve 2 needs to be controlled, so that stop valves or one-way valves are arranged in the two parallel lines and can be controlled; the stop valve is a valve which only has two states of opening or closing, and the one-way valve is a valve which only allows one-way flow.

A first heat exchanger 3, a second heat exchanger 4, a compressor 1 and an expansion valve 2 in the air conditioning system are connected through an air conditioning pipeline to form a basic loop a of the air conditioning system. On this basis, the radiator 5 in this scheme is connected in parallel to the basic loop a between the first heat exchanger 3 and the expansion valve 2 only through the branch pipe b, and compared with the conventional scheme in which the radiator 5 is connected to the air-conditioning pipes on the front and rear sides of the expansion valve 2 respectively through two branch pipes b, the connection scheme of this scheme is only in the cooling mode, and the refrigerant flowing out of the first heat exchanger 3 flows into the expansion valve 2 after taking away the heat of the radiator 5 and the inverter connected thereto through the radiator 5. That is, heat can be radiated by the refrigerant flowing through the radiator 5 in the cooling mode. Compared with the prior art, the scheme that the radiator 5 is connected between the second heat exchanger 4 and the expansion valve 2 in parallel is eliminated, and the main reason is that the environment temperature is low in winter, and the frequency converter can radiate heat to the environment through the radiator 5 without the aid of a refrigerant.

Based on the change of the connection mode, the radiator 5 in the system only needs to be connected in one branch pipeline b, only one heat exchange channel needs to be constructed in the radiator 5, and complex channel arrangement does not exist. Therefore, the heat exchange channel can be comprehensively arranged on the heat exchange surface, and the heat exchange efficiency is ensured.

Therefore, the air conditioning system only ensures that the refrigerant radiates the radiator 5 in the refrigeration mode, simplifies the connection structure of the radiator 5 and reduces the comprehensive cost of the radiating system. And because the heat exchange channel inside the radiator 5 is optimized, the heat dissipation effect of the air conditioning system on the radiator 5 is better than that of the prior art even in a refrigeration mode.

In a further preferred embodiment, the heat sink 5 as shown in fig. 5, 9 and 10 has heat dissipating fins 51 on the surface thereof, and an air duct 52 is formed between two adjacent heat dissipating fins 51. In the above scheme, it is pointed out that the ambient temperature is lower in winter, the frequency converter can radiate heat to the environment through the radiator 5 without radiating heat by means of a refrigerant, and therefore the scheme only ensures that the refrigerant radiates the radiator 5 in the refrigeration mode. In this case, the heat sink 5 is provided with heat dissipating fins 51 on the surface thereof, and an air duct 52 is formed between two adjacent heat dissipating fins 51. On the basis of the radiation heat dissipation of the radiator 5, the air-cooled heat dissipation is increased.

Based on the above scheme, the present embodiment provides the following two structures:

in one embodiment shown in fig. 5-8, a flow restricting chamber 53 is formed inside the radiator 5, and an axially movable check valve element 61 is disposed in the flow restricting chamber 53. Only when the check valve spool 61 is subjected to the fluid surge pressure of the expansion valve 2 toward the radiator 5, the check valve spool 61 presses against and closes one end chamber port of the restricting chamber 53. The check valve 61 in this embodiment closes the flow restricting chamber 53 only by the impact pressure of the fluid flowing from the expansion valve 2 to the radiator 5, thereby preventing the refrigerant from flowing therethrough. And the flow direction of the refrigerant passing through the first heat exchanger 3, the radiator 5 and the expansion valve 2 in sequence is not affected.

In a specific embodiment, a plurality of ribs 611 are circumferentially spaced on a side wall of the one-way valve core 61, and a flow passage 612 is formed between two adjacent ribs 611. The check valve core 61 can move axially along the flow limiting cavity 53, the circumferential outer edge of the convex rib 611 on the side wall of the check valve core 61 is matched with the side wall of the flow limiting cavity 53, and the side wall of the end face of the check valve core 61 can be in sealing contact with an end cavity opening of the flow limiting cavity 53. In this embodiment, when the check valve element 61 is subjected to only the impact pressure of the fluid flowing from the expansion valve 2 to the radiator 5, the check valve element 61 blocks one end opening of the flow restricting chamber 53 to prevent the refrigerant from flowing. When the refrigerant flows from the radiator 5 to the expansion valve 2, the refrigerant can flow through the flow passage on the side wall of the check valve body 61 without obstructing the flow.

The orifice of the flow limiting cavity 53 is a conical orifice, and the end of the one-way valve core 61 is provided with a conical surface which can abut against and be attached to the conical orifice. The scheme adopts conical abutting seal, so that the fault tolerance rate is higher, and the sealing performance is better.

As shown in fig. 6 and 7, the flow-limiting cavity 53 is opened at the output end of the internal flow channel of the heat sink 5, a pipe interface 54 is arranged outside the flow-limiting cavity 53, and a branch pipe b is connected to the pipe interface 54, which may be fixed by welding; the heat exchange channels in this solution are arranged directly inside the heat sink 5. The outermost position at which the check valve body 61 is restricted from moving axially along the restricting chamber 53 when the branch pipe b is fitted into the pipe joint 54. In the above scheme, a heat exchange channel needs to be constructed in the radiator 5, the flow limiting cavity 53 in the scheme is an opening end of the heat exchange channel in the radiator 5, and the caliber of the flow limiting cavity 53 needs to be larger than the diameter of the heat exchange channel, so that the one-way valve core 61 adapted to the caliber of the flow limiting cavity 53 does not enter the heat exchange channel. Meanwhile, the relatively large caliber of the flow limiting cavity 53 is also suitable for connecting the branch pipeline b, and when the pipe orifice of the branch pipeline b is connected to the opening of the flow limiting cavity 53, the outermost position of the one-way valve core 61 moving along the axial direction of the flow limiting cavity 53 can be limited. Therefore, the radiator 5 is only required to be enlarged at the inlet end of the heat exchange channel built in the original radiator, and the forming structure is very simple. But also suitable for the reformation of the original radiator 5, namely flaring the inlet end of the heat exchange channel of the original radiator 5 to form a flow-limiting cavity 53.

In another embodiment shown in fig. 9-13, the heat exchange channel is in a compression joint manner (refer to fig. 9) or an expansion joint manner (refer to fig. 10), a first check valve 6 is embedded in a branch pipe b between the output end of the radiator 5 and the expansion valve 2, and the first check valve 6 comprises a valve body 62 positioned in the branch pipe b and a check valve core 61 movably arranged in a valve cavity 63 of the valve body 62. When the check valve spool 61 is subjected to the fluid shock pressure of the expansion valve 2 toward the radiator 5, the check valve spool 61 is pressed against the valve chamber 63 to seal it. The first check valve 6 in this scheme is arranged in the branch pipeline b between the output end of the radiator 5 and the expansion valve 2, the first check valve 6 is different from a traditional check valve, the first check valve 6 is embedded in the branch pipeline b, and the branch pipeline b does not need to be segmented and then is respectively connected with two ends of the first check valve 6.

A positioning groove 65 is arranged on the outer wall of the valve body 62 of the first one-way valve 6, and a positioning convex ring 66 corresponding to the positioning groove 65 is arranged on the inner side of the pipe wall of the branch pipe b. By adopting the structure, after the first one-way valve 6 is arranged in the branch pipeline b, the pipe wall of the branch pipeline b is only required to be extruded to form the positioning convex ring 66 and be clamped with the positioning groove 65 on the outer wall of the valve body 62, and the installation and positioning of the first one-way valve 6 can be realized.

In a specific embodiment, the valve body 62 is provided with a passage port 64 for communicating the internal valve cavity 63 with the external branch pipe b, the circumferential outer edge of the check valve core 61 is matched with the side wall of the valve cavity 63, and the check valve core 61 can seal one side cavity port of the valve cavity 63 or the valve cavity 63 between the side cavity port and the passage port 64. In this embodiment, when the check valve element 61 is subjected to the impact pressure of the fluid flowing from the expansion valve 2 to the radiator 5, the check valve element 61 moves to the valve chamber 63 between the chamber port and the passage port 64, and at this time, the refrigerant flow can be stopped whether the chamber port is blocked or the valve chamber 63 is blocked by the side wall. When the fluid impact pressure of the first heat exchanger 3 flowing to the radiator 5 is received, the check valve core 61 moves out of the valve cavity 63 between the cavity opening and the channel opening 64, the cavity opening is the same as the channel opening 64, and the refrigerant circulation is realized.

In another embodiment, a plurality of ribs 611 are circumferentially spaced on the sidewall of the one-way valve core 61, and a flow passage 612 is formed between two adjacent ribs 611. The check valve core 61 can move axially along the valve cavity 63, the circumferential outer edge of the convex rib 611 on the side wall of the check valve core 61 is matched with the side wall of the valve cavity 63, and the side wall of the end face of the check valve core 61 can be in sealing abutment with one end cavity opening of the valve cavity 63. This arrangement is similar to the first check valve 6 in the flow-restricting chamber 53, and will not be described in detail.

The use condition of the air conditioner is as follows: when heating in winter, the stop valve or the first check valve 6 disposed in the branch pipeline b prevents the refrigerant medium from flowing through the radiator 5, and the heat of the electronic power device is mainly dissipated by the heat dissipation fins 51 on the surface of the radiator 5. In cooling in summer, the stop valve or the second check valve 60 in the basic circuit a between the two ends of the branch pipe b is closed, and the stop valve or the first check valve 6 provided in the branch pipe b is opened, or the first check valve 6 in the flow restricting chamber 53 in the radiator 5 is opened. The refrigerant flows through the heat exchange channel of the heat sink 5, the heat of the electronic power device is taken away mainly by the refrigerant in the heat exchange channel, and meanwhile, the heat dissipation fins 51 on the surface of the heat sink perform auxiliary heat dissipation.

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 in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. An air conditioning system with a radiator comprises a compressor (1), an expansion valve (2), a first heat exchanger (3) arranged in an outdoor unit, a second heat exchanger (4) arranged in an indoor unit, and a radiator (5) connected with an inverter; the first heat exchanger (3), the second heat exchanger (4), the compressor (1) and the expansion valve (2) are connected through an air conditioner pipeline to form a basic loop a of the air conditioner system; the method is characterized in that: the radiator (5) is connected in parallel to a basic loop a between the first heat exchanger (3) and the expansion valve (2) only through a branch pipeline b, and only in the refrigeration mode, the refrigerant flowing out of the first heat exchanger (3) flows into the expansion valve (2) after passing through the radiator (5).

2. The air conditioning system with a radiator according to claim 1, wherein: a stop valve or a first one-way valve (6) is arranged in a heat exchange channel in the radiator (5) or a branch pipeline b between the output end of the radiator (5) and the expansion valve (2), and only the refrigerant is allowed to flow to the expansion valve (2) from the first heat exchanger (3) through the radiator (5); a stop valve or a second one-way valve (60) is arranged in the basic loop a between the two end parts of the branch pipeline b, only the refrigerant is allowed to flow from the expansion valve (2) to the first heat exchanger (3), and the refrigerant does not flow through the radiator.

3. The air conditioning system with a radiator according to claim 2, wherein: a flow limiting cavity (53) is formed in the radiator (5), and a one-way valve core (61) moving axially is arranged in the flow limiting cavity (53); only when the one-way valve core (61) is under the impact pressure of fluid flowing to the radiator (5) from the expansion valve (2), the one-way valve core (61) presses against and seals one end cavity opening of the flow limiting cavity (53).

4. An air conditioning system with a radiator according to claim 3, wherein: a plurality of ribs (611) are circumferentially arranged on the side wall of the one-way valve core (61) at intervals, and a flow passage (612) is formed between every two adjacent ribs (611); the check valve core (61) can move axially along the flow limiting cavity (53), the circumferential outer edge of a rib (611) on the side wall of the check valve core (61) is matched with the side wall of the flow limiting cavity (53), and the side wall of the end face of the check valve core (61) can be in sealing abutment with a port of one end of the flow limiting cavity (53).

5. The air conditioning system with a radiator according to claim 4, wherein: the orifice of the flow limiting cavity (53) is a conical orifice, and the end part of the one-way valve core (61) is provided with a conical surface which can abut against and be attached to the conical orifice.

6. The air conditioning system with a radiator according to claim 4, wherein: the flow limiting cavity (53) is arranged at the output end of the internal flow channel of the radiator (5), a pipe connector (54) is arranged on the outer side of the flow limiting cavity (53), and a branch pipe b is connected to the pipe connector (54); when the branch pipe b is installed on the pipe joint (54), the outermost position of the one-way valve core (61) moving along the axial direction of the flow limiting cavity (53) is limited.

7. The air conditioning system with a radiator according to claim 2, wherein: a branch pipeline b between the output end of the radiator (5) and the expansion valve (2) is embedded with a first one-way valve (6), and the first one-way valve (6) comprises a valve body (62) positioned in the branch pipeline b and a one-way valve core (61) movably arranged in a valve cavity (63) of the valve body (62); when the one-way valve core (61) is under the impact pressure of the fluid flowing to the radiator (5) from the expansion valve (2), the one-way valve core (61) presses against and seals the valve cavity (63).

8. The air conditioning system with a radiator according to claim 7, wherein: and a positioning groove (65) is formed in the outer wall of the valve body (62) of the first one-way valve (6), and a positioning convex ring (66) corresponding to the positioning groove (65) is arranged on the inner side of the pipe wall of the branch pipe b.

9. The air conditioning system with a radiator according to claim 8, wherein: the valve body (62) is provided with a channel port (64) for communicating the internal valve cavity (63) with the external branch pipeline b, the circumferential outer edge of the one-way valve core (61) is matched with the side wall of the valve cavity (63), and the one-way valve core (61) can seal one side cavity port of the valve cavity (63) or the valve cavity (63) between the side cavity port and the channel port (64); or a plurality of ribs (611) are circumferentially arranged on the side wall of the one-way valve core (61) at intervals, and a flow passage (612) is formed between every two adjacent ribs (611); the check valve core (61) can axially move along the valve cavity (63), the circumferential outer edge of a convex rib (611) on the side wall of the check valve core (61) is matched with the side wall of the valve cavity (63), and the side wall of the end face of the check valve core (61) can be in sealing abutment with one end cavity opening of the valve cavity (63).

10. An air conditioning system with a radiator according to any one of claims 1 to 9, wherein: the surface of the radiator (5) is provided with radiating fins (51), and an air duct (52) is formed between every two adjacent radiating fins (51).

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