CN114688724A - Heat exchanger and kitchen air conditioning system applying same - Google Patents

Abstract

The heat exchanger comprises a first collecting pipe, a second collecting pipe and a heat transfer pipe, wherein a first connector communicated with a first manifold is arranged at one end of the first collecting pipe, a second connector communicated with a second manifold is arranged at one end of the second collecting pipe, the sectional area of the first manifold is gradually reduced from the end where the first connector is located to the other end, and the sectional area of the second manifold is gradually increased from the end where the second connector is located to the other end. The heat exchanger of the kitchen air conditioning system is arranged in a smoke exhaust channel of the oil smoke absorption assembly, and the second heat exchanger is arranged in an air outlet channel. The invention has the advantages that: this heat exchanger is through carrying out optimal design to its circulation cross-section for can not lead to the pressure drop too big when the refrigerant flows through the heat exchanger, thereby be favorable to promoting the system performance, this kitchen air conditioning system installs the heat exchanger in smoke exhaust passage, and the heat or the cold volume of heat exchanger can be taken away to the oil smoke, and then promote the air conditioner efficiency.

Description

Heat exchanger and kitchen air conditioning system applying same

Technical Field

The invention relates to a kitchen air conditioning system, in particular to a heat exchanger and a kitchen air conditioning system using the same.

Background

The kitchen is the main place that people cook, and the good or bad of kitchen air environment directly influences the culinary art and experiences. The kitchen is hot in summer and cold in winter, and has the requirements of cold supply and heat supply, so that people invent various kitchen air conditioners, the air in the kitchen is cooled in summer, and warm air can be provided for the kitchen in winter, so that the cooking comfort level is improved. Because the kitchen space is limited, the volume of the kitchen air conditioner can not be too large, therefore, the heat dissipation of the kitchen air conditioner has a great problem, and if the heat dissipation can not be carried out in time in the use process of the kitchen air conditioner, the energy efficiency of the air conditioner can be greatly reduced. However, the existing kitchen air conditioner and the range hood work independently, the two can not be linked, and the heat generated by the kitchen air conditioner can not be discharged to the outside through the fan of the range hood, so that how to discharge the heat generated by the kitchen air conditioner through the range hood becomes a problem to be solved urgently. Although there is also a product like a range hood in the market at present, namely, an air conditioning component is added on the basis of a platform of the range hood, the range hood can realize all functions of the range hood and also can realize the function of an air conditioner. However, these air conditioner smoke ventilators often carry out simple function with the indoor set of traditional air conditioner and traditional lampblack absorber and merge, and outdoor unit of air conditioner still need install outdoor alone, and the air conditioner lampblack absorber integrated level of this kind of mode is not enough, and the installation is comparatively loaded down with trivial details, and moreover, the pipeline and the line connection of outer machine in the air conditioner also can destroy the wall body.

In addition, for the air conditioning system, when the high-temperature and high-pressure gas from the compressor is condensed in the condenser, the gas state is changed into the liquid state, the volume flow rate is sharply reduced, when the throttled refrigerant is evaporated in the evaporator, the liquid state is changed into the gas state, and the volume flow rate is sharply increased, so that if the size of the flow cross section of the heat exchanger is not optimized, the pressure drop of the refrigerant is too large, and the system performance is reduced.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a heat exchanger, which has a novel structure and can avoid a large pressure drop when a refrigerant flows through the heat exchanger, in view of the current state of the prior art.

The second technical problem to be solved by the present invention is to provide a kitchen air conditioning system with good heat dissipation effect and avoiding excessive pressure drop when refrigerant flows through a heat exchanger, aiming at the current state of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this heat exchanger, including locating first pressure manifold, the second pressure manifold of heat exchanger both sides respectively and connecting the heat-transfer pipe between first pressure manifold and second pressure manifold, heat-transfer pipe interval distribution is linked together with first pressure manifold, second pressure manifold, first pressure manifold is inside to form first manifold the second manifold is inside to form, the one end of first pressure manifold is equipped with the first interface that is linked together with first manifold, the one end of second pressure manifold is equipped with the second interface that is linked together with the second manifold, first interface and second interface are diagonal distribution, its characterized in that: the sectional area of the first manifold is gradually reduced from the end where the first port is located to the other end, and the sectional area of the second manifold is gradually increased from the end where the second port is located to the other end.

The heat transfer pipe can have various structures, and preferably, the heat transfer pipe is flat pipes which are distributed in parallel, and the width dimension of the heat transfer pipe is gradually reduced from the side of the first joint to the side of the second joint.

In order to enable the refrigerant to smoothly flow through the collecting pipes and the heat transfer pipes, first partition plates are arranged inside the first collecting chamber at intervals along the length direction of the first collecting pipe, second partition plates are arranged inside the second collecting chamber at intervals along the length direction of the second collecting pipe, and the first partition plates and the second partition plates are distributed in a staggered mode in the length direction of the first collecting pipe and the length direction of the second collecting pipe.

Further preferably, one of the first interface and the second interface is an inlet, and the other interface is an outlet. When the heat exchanger is used as a condenser, the first interface is an inlet, the second interface is an outlet, and when the heat exchanger is used as an evaporator, the second interface is an inlet, and the first interface is an outlet.

The technical scheme adopted by the invention for solving the second technical problem is as follows: this kitchen air conditioning system, including air conditioning component and oil absorption cigarette subassembly, the air conditioning component include the compressor first heat exchanger and second heat exchanger, be linked together through the refrigerant pipeline between compressor, first heat exchanger and the second heat exchanger, the oil absorption cigarette subassembly includes the casing and locates the exhaust passage in the casing, its characterized in that: an air outlet channel separated from the smoke exhaust channel is further arranged in the machine shell, the heat exchanger forms the first heat exchanger and is arranged in the smoke exhaust channel, the second heat exchanger is arranged in the air outlet channel, and an air outlet of the air outlet channel is in fluid communication with the interior of the kitchen room.

Preferably, the first interface is communicated with the compressor through a refrigerant pipeline, and the second interface is communicated with the second heat exchanger through a refrigerant pipeline.

Further preferably, the heat exchanger is disposed vertically or inclined toward the windward side with respect to a vertical plane. Furthermore, the heat exchanger may also be arranged obliquely with respect to the vertical plane towards the leeward side.

Further preferably, the first port is located above the second port.

The smoke exhaust channel and the air outlet channel can be distributed in various manners, preferably, an oil smoke suction fan is arranged in the casing, the smoke exhaust channel and the air outlet channel are arranged above the oil smoke suction fan and distributed left and right, and the smoke exhaust channel is arranged at the downstream of an air outlet of the oil smoke suction fan along the oil smoke flowing direction.

In order to realize the binary channels structure, smoke exhausting channel includes first smoke exhausting channel and second smoke exhausting channel the wind channel diverter valve that is used for switching one of them passageway in first smoke exhausting channel and the second smoke exhausting channel and the air outlet of range hood fan be linked together is installed to first smoke exhausting channel and second smoke exhausting channel's entry, the heat exchanger is located in first smoke exhausting channel or in the second smoke exhausting channel. Thus, the smoke exhaust channel without the heat exchanger can form a direct exhaust channel, and the smoke exhaust channel with the heat exchanger can form a heat dissipation channel.

Preferably, the second smoke exhaust channel is located on the left side of the casing, the first smoke exhaust channel is located on the right side of the second smoke exhaust channel, and the air outlet of the oil smoke suction fan is located on the left side of the casing and corresponds to the lower portion of the second smoke exhaust channel.

First exhaust flue and second exhaust flue can have multiple smoke discharging mode, preferably, first exhaust flue has first exhaust port, and second exhaust flue has the second exhaust port, first exhaust port and second exhaust port are independent each other.

In order to avoid the oil smoke from polluting the heat exchanger, an electrostatic purification device is further installed in the first smoke exhaust channel, and the electrostatic purification device is arranged at the upstream of the heat exchanger along the flowing direction of the oil smoke.

Preferably, the housing is provided with an air inlet and an air outlet of the air outlet channel, the air inlet is in fluid communication with the interior of the kitchen or the exterior of the kitchen, and the air outlet is arranged on the front side of the housing or on the top of the housing. Like this, the air-out passageway both can realize indoor air inlet, also can outdoor new trend get into the air-out passageway, and the position of air outlet also can nimble selection as required.

In order to make the system more compact and convenient to install, the compressor is integrated on the shell.

Preferably, a four-way valve is installed on the refrigerant pipeline, and a throttling device is installed on the refrigerant pipeline between the first heat exchanger and the second heat exchanger.

Compared with the prior art, the invention has the advantages that: the sectional area of the first manifold of the first pressure manifold of this heat exchanger diminishes from first interface place end to the other end gradually, the sectional area of the second manifold of second pressure manifold diminishes from second interface place end to the other end gradually, through carrying out optimal design to its circulation cross-section promptly, can not lead to the pressure drop too big when making the refrigerant flow through the heat exchanger, thereby be favorable to promoting the system performance, in addition, kitchen air conditioning system installs this heat exchanger in smoke evacuation passageway, the system during operation, the heat or the cold volume of heat exchanger can be taken away to the oil smoke, and then promote the air conditioner efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 2 is a schematic view of the heat exchanger shown in FIG. 1 from another angle;

FIG. 3 is a schematic diagram of a system configuration according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a range hood according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and fig. 2, the heat exchanger of this embodiment includes a first collecting pipe 121, a second collecting pipe 122 and a heat transfer pipe 123, where the first collecting pipe 121 and the second collecting pipe 122 are disposed at two sides of the heat exchanger, a first manifold is formed inside the first collecting pipe 121, a second manifold is formed inside the second collecting pipe 122, a first interface 124 communicated with the first manifold is disposed at one end of the first collecting pipe 121, a second interface 125 communicated with the second manifold is disposed at one end of the second collecting pipe 122, and the first interface 124 and the second interface 125 are diagonally distributed, as shown in fig. 1, the first interface 124 is located at the upper left of the heat exchanger 12, and the second interface 125 is located at the lower right of the heat exchanger 12. The cross-sectional area of the first manifold decreases from the end where the first port 124 is located toward the other end, and the cross-sectional area of the second manifold increases from the end where the second port 125 is located toward the other end.

Further, first partition plates 126 are provided at intervals in the longitudinal direction of the first header 121 in the first manifold, second partition plates 127 are provided at intervals in the longitudinal direction of the second header 122 in the second manifold, and the first partition plates 126 and the second partition plates 127 are arranged at intervals in the longitudinal direction of the first header and the second header.

The heat transfer pipe 123 is connected between the first header 121 and the second header 122 and is communicated with the first header 121 and the second header 122. The heat transfer pipe 123 of the present embodiment is flat pipes distributed in parallel with each other, and the width dimension of the heat transfer pipe 123 is gradually reduced from the side where the first joint 124 is located toward the side where the second joint 125 is located.

As shown in fig. 3 and 4, the kitchen air conditioning system of the present embodiment includes an air conditioning assembly and a fume exhaust assembly, the air conditioning assembly includes a compressor 11, a heat exchanger 12 and a second heat exchanger 13, the heat exchanger 12 constitutes a first heat exchanger, the compressor 11, the heat exchanger 12 and the second heat exchanger 13 are communicated with each other through a refrigerant pipeline 14, a four-way valve (not shown) is installed on the refrigerant pipeline 14, and a throttling device 15 is installed on the refrigerant pipeline 14 between the heat exchanger 12 and the second heat exchanger 13. A coolant flows through the coolant line 14, and water, ethylene glycol, glycerol, or the like can be used as a common coolant. The specific operation principle of the air conditioning assembly is the same as that of the existing air conditioner, and is not described herein.

The range hood assembly of this embodiment has a housing 20, a range hood fan 21 is disposed in the housing 20, and the range hood fan 21 is installed at the lower portion of the housing 20. The upper part of the casing 20 is provided with a smoke exhaust channel 22 and an air outlet channel 23 which are isolated from each other, and along the flow direction of the oil smoke, the smoke exhaust channel 22 is arranged at the downstream of the air outlet of the oil smoke suction fan 21. The direction indicated by the arrow a in fig. 3 is taken as the right, and the air outlet channel 23 is located at the right side of the smoke exhaust channel 22. The present embodiment integrates the compressor 11 on the casing 20, and the compressor 11 sucks the right side of the range hood 21 and is located below the air outlet channel 23.

The smoke exhausting channel 22 of the present embodiment includes a first smoke exhausting channel 221 and a second smoke exhausting channel 222, and an air channel switching valve 3 for switching one of the first smoke exhausting channel 221 and the second smoke exhausting channel 222 to communicate with the air outlet of the range hood 21 is installed at the inlets of the first smoke exhausting channel 221 and the second smoke exhausting channel 222. Specifically, the second smoke exhausting channel 222 is located at the left side of the casing 20, the first smoke exhausting channel 221 is located at the right side of the second smoke exhausting channel 222, and the air outlet of the range hood 21 is located at the left side of the casing 20 and corresponds to the lower side of the second smoke exhausting channel 222.

The heat exchanger 12 is installed in the first smoke exhaust duct 221, and the heat exchanger 12 is disposed obliquely toward the windward side with respect to the vertical plane. The first port 124 of the heat exchanger 12 is located above the second port 125. The first port 124 is communicated with the compressor 11 through the refrigerant pipeline 14, and the second port 125 is communicated with the second heat exchanger 13 through the refrigerant pipeline 14.

An electrostatic purification device 4 is also installed in the first smoke exhaust path 221, and the electrostatic purification device 4 is provided upstream of the heat exchanger 12 in the smoke flowing direction, thereby preventing the smoke from contaminating the heat exchanger 12.

The first smoke exhausting channel 221 of the present embodiment has a first smoke exhausting port 223, the second smoke exhausting channel 222 has a second smoke exhausting port 224, and the first smoke exhausting port 223 and the second smoke exhausting port 224 are independent of each other. The first exhaust port 223 and the second exhaust port 224 are connected to the same exhaust pipe 5.

The second heat exchanger 13 is installed in the air outlet channel 23, and an air inlet (not shown) and an air outlet 24 of the air outlet channel 23 are provided on the housing 20. The air inlet can be communicated with the inside of a kitchen or the outside of the kitchen. The air outlet 24 is in fluid communication with the interior of the kitchen, the air outlet 24 may be disposed on the front surface of the housing 20 or on the top of the housing 20, when the air outlet is disposed on the front surface of the housing 20, the air conditioning air is directly blown from the air outlet into the interior of the kitchen, and when the air outlet is disposed on the top of the housing 20, the air outlet is communicated with the interior of the kitchen through an air duct (not shown).

The working process of the kitchen air conditioning is as follows:

only the range hood is turned on, the air duct switching valve 3 closes the first smoke exhaust channel 221, opens the second smoke exhaust channel 222, and exhausts the oil smoke through the second smoke exhaust channel 222.

Under the refrigeration mode, the range hood and the air conditioner are both opened, the air duct switching valve 3 closes the second smoke exhaust channel 222, the first smoke exhaust channel 221 is opened, the oil smoke is exhausted through the first smoke exhaust channel 221, at the moment, the heat exchanger 12 is a condenser, the second heat exchanger 13 is an evaporator, the oil smoke flows across the surface of the condenser and can cool and radiate the condenser, the temperature of secondary refrigerant flowing through the condenser is reduced, the heat exchange effect of the condenser is improved, and the energy efficiency of the air conditioner is further improved. Meanwhile, cold air is fed into the kitchen room from the air outlet 24 of the air outlet channel 23. In addition, in the cooling mode, the first port 124 of the heat exchanger 12 is an inlet of the refrigerant, and the second port 125 is an outlet of the refrigerant, and since the gas from the compressor 11 is changed from a gaseous state to a liquid state when the high-temperature and high-pressure gas is condensed in the condenser, the volume flow rate is rapidly reduced, the size of the header pipe and the heat transfer pipe 123 of the heat exchanger 12 is designed to be gradually reduced from the first port 124 to the second port 125, so that the refrigerant pressure drop can be avoided from being too large, and the system performance can be further improved.

In the heating mode, the range hood and the air conditioner are both opened, the air duct switching valve 3 closes the second smoke exhaust channel 222, the first smoke exhaust channel 221 is opened, the oil smoke is exhausted through the first smoke exhaust channel 221, at the moment, the heat exchanger 12 is an evaporator, the second heat exchanger 13 is a condenser, the cold energy of the evaporator is taken away by the oil smoke, and meanwhile, the warm air is sent into a kitchen room from the air outlet 24 of the air outlet channel 23. In addition, in the heating mode, the second port 125 of the heat exchanger 12 is an inlet of the refrigerant, the first port 124 is an outlet of the refrigerant, and when the throttled refrigerant is evaporated in the evaporator, the refrigerant changes from a liquid state to a gas state, so that the volume flow rate is increased rapidly.

In addition, the oil fume suction assembly is not limited to a structure that the oil fume suction fan is arranged in the shell, and the oil fume suction assembly can also adopt an unpowered structure, namely the oil fume suction assembly only keeps the fume collecting shell, and the oil fume suction fan is arranged outside the shell, for example, the oil fume suction fan can be arranged at the top of a building public flue.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (16)

1. The utility model provides a heat exchanger (12), is including locating first pressure manifold (121), second pressure manifold (122) and the heat-transfer pipe (123) of connection between first pressure manifold and second pressure manifold of heat exchanger both sides respectively, heat-transfer pipe (123) interval distribution is linked together with first pressure manifold (121), second pressure manifold (122), first pressure manifold (121) inside form first manifold the inside second manifold that forms of second pressure manifold (122), the one end of first pressure manifold (121) is equipped with first interface (124) that are linked together with first manifold, the one end of second pressure manifold (122) is equipped with second interface (125) that are linked together with the second manifold, first interface (124) and second interface (125) are the diagonal distribution, its characterized in that: the cross-sectional area of the first manifold is gradually reduced from the end where the first port (124) is located to the other end, and the cross-sectional area of the second manifold is gradually increased from the end where the second port (125) is located to the other end.

2. The heat exchanger of claim 1, wherein: the heat transfer pipe (123) is a flat pipe distributed in parallel, and the width dimension of the heat transfer pipe (123) gradually decreases from the side of the first joint (124) to the side of the second joint (125).

3. The heat exchanger of claim 1, wherein: first partition plates (126) are arranged in the first manifold at intervals along the length direction of the first collecting pipe (121), second partition plates (127) are arranged in the second manifold at intervals along the length direction of the second collecting pipe (122), and the first partition plates (126) and the second partition plates (127) are distributed in a staggered mode in the length direction of the first collecting pipe and the second collecting pipe.

4. The heat exchanger of claim 1, wherein: one of the first interface (124) and the second interface (125) is an inlet, and the other interface is an outlet.

5. A kitchen air conditioning system provided with the heat exchanger of any one of claims 1 to 4, comprising an air conditioning assembly and a fume exhaust assembly, wherein the air conditioning assembly comprises a compressor (11), the first heat exchanger and the second heat exchanger (13), the compressor (11), the first heat exchanger and the second heat exchanger (13) are communicated with each other through a refrigerant pipeline (14), the fume exhaust assembly comprises a casing (20) and a fume exhaust channel (22) arranged in the casing, and the kitchen air conditioning system is characterized in that: an air outlet channel (23) separated from the smoke exhaust channel is further arranged in the machine shell (20), the heat exchanger (12) forms the first heat exchanger and is arranged in the smoke exhaust channel (22), the second heat exchanger (13) is arranged in the air outlet channel (23), and an air outlet (24) of the air outlet channel (23) is in fluid communication with the interior of the kitchen room.

6. The galley air conditioning system according to claim 5, wherein: the first connector (124) is communicated with the compressor (11) through a refrigerant pipeline (14), and the second connector (125) is communicated with the second heat exchanger (13) through the refrigerant pipeline (14).

7. The galley air conditioning system according to claim 5, wherein: the heat exchanger (12) is arranged vertically or inclined to the windward side with respect to the vertical plane.

8. The galley air conditioning system according to claim 7, wherein: the first port (124) is located above the second port (125).

9. The galley air conditioning system according to claim 5, wherein: the range hood is characterized in that the range hood fan (21) is installed inside the casing (20), the smoke exhaust channel (22) and the air outlet channel (23) are arranged above the range hood fan (21) and distributed left and right, and the smoke exhaust channel (22) is arranged at the downstream of an air outlet of the range hood fan (21) along the flow direction of oil smoke.

10. The galley air conditioning system according to claim 9, wherein: the smoke exhausting channel (22) comprises a first smoke exhausting channel (221) and a second smoke exhausting channel (222), an air channel switching valve (3) used for switching one of the first smoke exhausting channel (221) and the second smoke exhausting channel (222) to be communicated with an air outlet of the oil smoke suction fan (21) is installed at the inlets of the first smoke exhausting channel (221) and the second smoke exhausting channel (222), and the heat exchanger (12) is arranged in the first smoke exhausting channel (221) or the second smoke exhausting channel (222).

11. The galley air conditioning system according to claim 10, wherein: the second smoke exhausting channel (222) is located on the left side of the machine shell (20), the first smoke exhausting channel (221) is arranged on the right side of the second smoke exhausting channel (222), and the air outlet of the oil fume suction fan (21) is arranged on the left side of the machine shell (20) and corresponds to the position below the second smoke exhausting channel (222).

12. The galley air conditioning system according to claim 10, wherein: the first smoke exhaust channel (221) is provided with a first smoke exhaust port (223), the second smoke exhaust channel (222) is provided with a second smoke exhaust port (224), and the first smoke exhaust port (223) and the second smoke exhaust port (224) are independent.

13. The galley air conditioning system according to claim 10, wherein: an electrostatic purification device (4) is further installed in the first smoke exhaust channel (221), and the electrostatic purification device (4) is arranged on the upstream of the heat exchanger (12) along the flow direction of the smoke.

14. The galley air conditioning system according to claim 5, wherein: an air inlet and an air outlet (24) of the air outlet channel (23) are formed in the machine shell (20), the air inlet is in fluid communication with the interior of the kitchen or the exterior of the kitchen, and the air outlet (24) is arranged on the front face of the machine shell (20) or on the top of the machine shell (20).

15. The galley air conditioning system according to claim 5, wherein: the compressor (11) is integrated in the housing (20).

16. Galley air conditioning system according to any of claims 5 to 15, characterized in that: a four-way valve is installed on the refrigerant pipeline (14), and a throttling device (15) is installed on the refrigerant pipeline (14) between the first heat exchanger and the second heat exchanger (13).

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