CN218410347U

CN218410347U - High-efficient bucket formula heat exchanger

Info

Publication number: CN218410347U
Application number: CN202222200885.2U
Authority: CN
Inventors: 金子洋; 任云; 马利翔
Original assignee: Zhejiang Intech Technology Co ltd
Current assignee: Zhejiang Intech Technology Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-01-31
Anticipated expiration: 2032-08-19

Abstract

The utility model relates to the field of heat exchange equipment, in particular to a high-efficiency barrel type heat exchanger, which comprises a shell, a heat exchange core body and an economizer core body, wherein the heat exchange core body and the economizer core body are arranged in the shell; the shell comprises an outer cylinder and an inner cylinder arranged in the outer cylinder; a connecting hole for communicating the outer cylinder cavity with the inner cylinder cavity is formed in the wall of the inner cylinder, the refrigerant inlet pipe is communicated with the outer cylinder wall, and the inner end part of the refrigerant outlet pipe extends into the inner cylinder cavity; the heat exchange core body and the economizer core body are arranged in the outer cylinder cavity and are sequentially arranged between the refrigerant air inlet pipe and the connecting hole. According to the scheme, on the basis that the economizer core body is used for carrying out supercooling treatment on the refrigerant of the main path, the refrigerant in the scheme sequentially exchanges heat and is subjected to supercooling treatment, and the cooling effect of the refrigerant is better; in addition, the refrigerant after the supercooling treatment flows into the inner cylinder cavity, and the inner cylinder cavity has the function of storing the refrigerant, so that the problem of the change of the refrigerant consumption under different working conditions is solved.

Description

High-efficient bucket formula heat exchanger

Technical Field

The utility model relates to a indirect heating equipment field especially relates to a high-efficient bucket formula heat exchanger.

Background

At present, the heat pump heating and water heater market in China generally sells two types, namely an air source heat pump and a water source heat pump. The Chinese utility model patent with the publication number of CN204358996U describes a high-efficiency cylindrical heat exchanger with an economizer. The water heater mainly solves the technical problems that in the prior art, the evaporation temperature of the water heater is reduced along with the temperature reduction in the northern cold area, and the water heater needs to require to obtain higher domestic hot water, so that the heat loss is caused, the energy-saving effect is poor, and the like. The utility model discloses an urceolus, the inside inner tube that is equipped with of urceolus, the upper and lower end of urceolus, inner tube is equipped with upper cover, lower cover respectively, the inner tube forms an airtight space with the upper and lower cover of casing, airtight space intercommunication has refrigerant import, refrigerant export, the cross-under has the refrigerant connecting pipe in the airtight space, outside the inner tube upwards stretched out in the economizer import of refrigerant connecting pipe, economizer export, be equipped with the coil pipe between inner tube and the urceolus, the both ends intercommunication of coil pipe has water route import, water route export.

The above prior patent provides a heat exchanger for exchanging refrigerant and water, and an economizer for exchanging refrigerant and refrigerant, which saves the cost of independently installing the economizer, saves the space and reduces the heat loss. Reference is made to the contents described in the preceding patent specification [ 0018 ]: the refrigerant gas of the main path directly enters the inner cylinder of the heat exchanger through a refrigerant inlet; the refrigerant liquid of the auxiliary circuit enters the economizer through the economizer inlet after being throttled and depressurized by the expansion valve, and the two parts of refrigerant generate heat exchange in the economizer. Meanwhile, the refrigerant can also realize heat exchange with the coil pipe between the inner cylinder and the outer cylinder.

However, the above scheme has the following two problems: 1, the economizer and the coil pipe are respectively arranged on the inner cylinder and the outer cylinder, and the inner cylinder and the outer cylinder are not communicated with each other as can be seen from the attached drawings, so that a refrigerant cannot simultaneously contact the economizer and the coil pipe, in the section of the specification (0018), the refrigerant is introduced into the inner cylinder and can be directly contacted with the economizer, but the heat exchange with the coil pipe can only pass through the side wall of the inner cylinder, and the heat exchange efficiency is low.

2, the problem that the amount of the refrigerant is changed under different working conditions cannot be solved by the scheme.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a high efficiency barrel heat exchanger, which adopts an economizer core to perform supercooling treatment on the refrigerant of the main path, wherein the refrigerant in the scheme sequentially performs heat exchange and supercooling treatment, and the cooling effect of the refrigerant is better; in addition, the refrigerant after the supercooling treatment flows into the inner cylinder cavity, and the inner cylinder cavity has the function of storing the refrigerant, so that the problem of the change of the refrigerant dosage under different working conditions is solved.

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

a high-efficiency barrel type heat exchanger comprises a shell, a heat exchange core body and an economizer core body, wherein the heat exchange core body and the economizer core body are arranged in the shell; the shell is connected with a refrigerant inlet pipe, a refrigerant outlet pipe, an economizer inlet and an economizer outlet which are communicated with the economizer core, and a water side inlet and a water side outlet which are communicated with the heat exchange core; the shell comprises an outer cylinder and an inner cylinder arranged in the outer cylinder; the method is characterized in that: a connecting hole for communicating the outer cylinder cavity with the inner cylinder cavity is formed in the wall of the inner cylinder, the refrigerant inlet pipe is communicated with the outer cylinder wall, and the inner end part of the refrigerant outlet pipe extends into the inner cylinder cavity; the heat exchange core body and the economizer core body are arranged in the outer cylinder cavity and are sequentially arranged between the refrigerant air inlet pipe and the connecting hole.

The above technical scheme is adopted in the utility model, this technical scheme relates to a high-efficient bucket formula heat exchanger, and this high-efficient bucket formula heat exchanger's the inside heat transfer core and the economizer core that are provided with of casing, the inside secondary refrigerant of flowing through of heat transfer core [ water ], the inside refrigerant of flowing through of economizer core, the casing passes through inner tube and urceolus and founds inner tube chamber and the urceolus chamber that forms mutual intercommunication, and heat transfer core and economizer core set up in the urceolus intracavity. When the heat exchanger works, a refrigerant is introduced into the outer cylinder cavity from the refrigerant inlet pipe, exchanges heat with the secondary refrigerant inside the heat exchange core body firstly, and then exchanges heat with the secondary refrigerant in the economizer core body. On the basis of adopting the economizer core body to carry out supercooling treatment on the refrigerant of the main path, the refrigerant in the scheme has the advantages of heat exchange and supercooling treatment in sequence, and the cooling effect of the refrigerant is better.

The refrigerant after being supercooled flows into the inner cylinder cavity, and the inner cylinder cavity has the function of storing the refrigerant, so that the problem of the change of the refrigerant consumption under different working conditions is solved.

In a specific implementation scheme, the heat exchange core body is a heat exchange coil, the economizer core body is an economizer coil, and the heat exchange coil and the economizer coil are sleeved in an outer cylinder cavity outside the inner cylinder and are sequentially arranged between the refrigerant air inlet pipe and the connecting hole. This scheme adopts heat exchange coil and economic ware coil to set up in the urceolus intracavity, and the structure is comparatively compact, is applicable to the barrel heat exchanger.

Preferably, the refrigerant inlet pipe is positioned at the upper end of the outer cylinder wall, and the connecting hole is formed in the side wall of the lower end of the inner cylinder; the inner end part of the refrigerant liquid outlet pipe extends into the bottom of the inner cylinder cavity; after entering the outer cylinder cavity from the upper end, refrigerant gas enters the inner cylinder cavity from a connecting hole at the bottom through the heat exchange coil and the economizer coil.

In the process, a heat exchange coil and an economizer coil are adopted. Furthermore, the caliber of an outer cylinder cavity formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder is matched with the pipe diameter of the heat exchange coil, and the heat exchange coil forms a spiral channel in the outer cylinder cavity. Therefore, the refrigerant also passes through the heat exchange coil and the economizer coil spirally in the outer cylinder cavity, so that the running path of the refrigerant is prolonged, and the heat exchange efficiency of the whole machine is improved.

Preferably, the shell further comprises a top cover and a bottom cover, the top cover and the bottom cover are respectively covered on the upper end opening and the lower end opening of the outer cylinder and the inner cylinder, a through hole is formed in the center of the top cover, and the refrigerant liquid outlet pipe penetrates through the through hole. The top cover in the scheme can be one, and is used for simultaneously covering the upper end openings of the outer cylinder and the inner cylinder; the two parts are respectively covered on the lower end openings of the outer cylinder and the inner cylinder; the same is true for the bottom cover.

In this scheme, refrigerant drain pipe need stretch into inner cylinder chamber bottom as far as possible to avoid the refrigerant of inner cylinder chamber bottom to be unable to be utilized. Further, the inner end portion of the refrigerant outlet pipe is constructed as a chamfered notch facing away from the connection hole. The structure has the following effects:

1. the oblique notch of the liquid outlet pipe is used for inserting the refrigerant liquid outlet pipe to the bottom without blocking, so that liquid refrigerant at the bottom can flow out conveniently, and oil at the bottom can return oil.

2. The chamfer opening direction is back to the inner cylinder refrigerant inlet hole, so that the entering refrigerant is prevented from directly flowing out of the liquid outlet pipe to form a short circuit, and the heat exchange is influenced.

Drawings

Fig. 1 is a schematic perspective view of a high-efficiency barrel heat exchanger according to the present invention.

Fig. 2 is a schematic side structure diagram of a high-efficiency barrel heat exchanger in accordance with the present invention.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a schematic structural diagram of the top surface of the high-efficiency barrel heat exchanger related to the invention.

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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, 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 of the first and second features not being in direct contact, but being in contact with 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.

As shown in fig. 1 to 4, the present embodiment relates to a high-efficiency barrel heat exchanger, which includes a shell, and a heat exchange core 2 and an economizer core 3 disposed inside the shell 1. A refrigerant inlet pipe 4 and a refrigerant outlet pipe 5, an economizer inlet 31 and an economizer outlet 32 which are communicated with the economizer core 3, and a water side inlet 21 and a water side outlet 22 which are communicated with the heat exchange core 2 are connected to the shell 1.

As shown in fig. 3, the housing 1 includes an outer cylinder 11, a top cover 12 and a bottom cover 13, and an inner cylinder 14 provided inside the outer cylinder 11. The top cover 12 and the bottom cover 13 are respectively covered on the upper end opening and the lower end opening of the outer cylinder 11 and the inner cylinder 14, a through hole 121 is arranged at the center of the top cover 12, and the refrigerant liquid outlet pipe 5 is arranged in the through hole 121 in a penetrating manner.

Specifically, a connecting hole 15 for communicating the outer cylinder cavity 111 and the inner cylinder cavity 141 is formed on the cylinder wall of the inner cylinder 14, the refrigerant inlet pipe 4 is communicated with the wall of the outer cylinder 11, and the inner end of the refrigerant outlet pipe 5 extends into the inner cylinder cavity 141. The heat exchange core 2 and the economizer core 3 are arranged in the outer cylinder cavity 111 and are sequentially arranged between the refrigerant inlet pipe 4 and the connecting hole 15. The heat exchange core body 2 and the economizer core body 3 are arranged inside the shell 1 of the efficient barrel type heat exchanger, secondary refrigerant (water) flows through the heat exchange core body 2, refrigerant flows through the economizer core body 3, the shell 1 forms an inner barrel cavity 141 and an outer barrel cavity 111 which are communicated with each other through the inner barrel 14 and the outer barrel 11, and the heat exchange core body 2 and the economizer core body 3 are arranged in the outer barrel cavity 111. When the heat exchanger works, a refrigerant is introduced into the outer cylinder cavity 111 from the refrigerant inlet pipe 4, exchanges heat with the secondary refrigerant in the heat exchange core 2 firstly, and then exchanges heat with the refrigerant in the economizer core 3. On the basis of adopting the economizer core body 3 to carry out supercooling treatment on the refrigerant of the main path, the refrigerant in the scheme has the advantages of heat exchange and supercooling treatment in sequence, and the cooling effect of the refrigerant is better.

The refrigerant after the supercooling treatment flows into the inner cylinder chamber 141, and the inner cylinder chamber 141 has a function of accumulating the refrigerant, thereby solving the problem of the change of the usage amount of the refrigerant under different working conditions.

In a specific embodiment, the heat exchange core 2 is a heat exchange coil, the economizer core 3 is an economizer coil, and the heat exchange coil and the economizer coil are sleeved in the outer cylinder cavity 111 outside the inner cylinder 14 and are sequentially arranged between the refrigerant inlet pipe 4 and the connecting hole 15. This scheme adopts heat exchange coil and economizer coil to set up in outer cylinder chamber 111, and the structure is comparatively compact, is applicable to barrel heat exchanger. The refrigerant inlet pipe 4 is arranged at the upper end of the wall of the outer cylinder 11, and the connecting hole 15 is formed on the side wall of the lower end of the inner cylinder 14. The inner end part of the refrigerant liquid outlet pipe 5 extends into the bottom of the inner cylinder cavity 141. After entering the outer cylindrical cavity 111 from the upper end, the refrigerant gas enters the inner cylindrical cavity 141 from the connecting hole 15 at the bottom through the heat exchange coil and the economizer coil.

According to the scheme, the heat exchange coil and the economizer coil are adopted, and further, the caliber of an outer cylinder cavity 111 formed between the inner wall of the outer cylinder 11 and the outer wall of the inner cylinder 14 is matched with the pipe diameter of the heat exchange coil, and the heat exchange coil forms a spiral channel in the outer cylinder cavity 111. Thus, the refrigerant also passes through the heat exchange coil and the economizer coil spirally in the outer cylinder cavity 111, so that the running path of the refrigerant is prolonged, and the heat exchange efficiency of the whole machine is improved.

In this embodiment, the refrigerant outlet pipe 5 needs to extend into the bottom of the inner cylinder cavity 141 as much as possible to prevent the refrigerant at the bottom of the inner cylinder cavity 141 from being unavailable. Further, the inner end of the refrigerant outlet pipe 5 is configured as a chamfered notch 51, the chamfered notch 51 faces away from the connecting hole 15, wherein the chamfered notch 51 is preferably 65 °, which has the effects that:

1. the oblique notch 51 is for inserting the refrigerant outlet pipe 5 to the bottom without blocking, so as to facilitate the outflow of the liquid refrigerant at the bottom and the return of the oil at the bottom.

2. The oblique notch 51 is opposite to the refrigerant inlet hole of the inner cylinder 14, so that the entering refrigerant is prevented from directly flowing out of the liquid outlet pipe to form a short circuit, and the heat exchange is influenced.

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 invention. 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, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A high-efficiency barrel type heat exchanger comprises a shell (1), a heat exchange core body (2) and an economizer core body (3), wherein the heat exchange core body and the economizer core body are arranged inside the shell (1); the shell (1) is connected with a refrigerant inlet pipe (4), a refrigerant outlet pipe (5), an economizer inlet (31) and an economizer outlet (32) which are communicated with the economizer core (3), and a water side inlet (21) and a water side outlet (22) which are communicated with the heat exchange core (2); the shell (1) comprises an outer cylinder (11) and an inner cylinder (14) arranged in the outer cylinder (11); the method is characterized in that: a connecting hole (15) for communicating an outer cylinder cavity (111) with an inner cylinder cavity (141) is formed in the wall of the inner cylinder (14), a refrigerant inlet pipe (4) is communicated with the wall of the outer cylinder (11), and the inner end part of a refrigerant outlet pipe (5) extends into the inner cylinder cavity (141); the heat exchange core body (2) and the economizer core body (3) are arranged in the outer cylinder cavity (111) and are sequentially arranged between the refrigerant air inlet pipe (4) and the connecting hole (15).

2. A high efficiency barrel heat exchanger as claimed in claim 1 wherein: the heat exchange core body (2) is a heat exchange coil, the economizer core body (3) is an economizer coil, and the heat exchange coil and the economizer coil are sleeved in an outer cylinder cavity (111) on the outer side of an inner cylinder (14) and are sequentially arranged between the refrigerant air inlet pipe (4) and the connecting hole (15).

3. A high efficiency barrel heat exchanger as claimed in claim 1 wherein: the refrigerant inlet pipe (4) is positioned at the upper end of the wall of the outer cylinder (11), and the connecting hole (15) is formed in the side wall of the lower end of the inner cylinder (14); the inner end part of the refrigerant liquid outlet pipe (5) extends into the bottom of the inner cylinder cavity (141).

4. A high efficiency barrel heat exchanger as claimed in claim 2 wherein: the caliber of an outer cylinder cavity (111) formed between the inner wall of the outer cylinder (11) and the outer wall of the inner cylinder (14) is matched with the caliber of the heat exchange coil, and the heat exchange coil forms a spiral channel in the outer cylinder cavity (111).

5. A high efficiency barrel heat exchanger as claimed in claim 1 wherein: the shell (1) further comprises a top cover (12) and a bottom cover (13), the top cover (12) and the bottom cover (13) are respectively covered on an upper end opening and a lower end opening of the outer cylinder (11) and the inner cylinder (14), a through hole (121) is formed in the center of the top cover (12), and the refrigerant liquid outlet pipe (5) penetrates through the through hole (121).

6. A high efficiency barrel heat exchanger as claimed in claim 5 wherein: the inner end of the refrigerant outlet pipe (5) is designed as a bevel cut (51), the bevel cut (51) faces away from the connecting hole (15).