A new type of grid fin heat exchanger

Abstract

The application discloses a novel grid fin type heat exchanger, which comprises a liquid inlet pipe, a liquid inlet branch pipe, a plurality of staggered fins, a square refrigerant pipe, a liquid outlet pipe and a liquid outlet branch pipe, the liquid inlet pipe is in sealing connection with the liquid inlet branch pipe, the liquid inlet branch pipe is in sealing connection with the square refrigerant pipe, the fins are arranged in fin mounting holes of the square refrigerant pipe, the fins are in sealing connection with the square refrigerant pipe, the square refrigerant pipe is in sealing connection with the liquid outlet branch pipe, and the liquid outlet branch pipe is in sealing connection with the liquid outlet pipe; the fins are provided with fin holes, and the fin holes of two adjacent fins are staggered. The refrigerant is directly contacted with the fins arranged in the square refrigerant pipe for heat exchange, the heat exchange steps are reduced, the heat exchange efficiency is improved, the heat exchange time is saved, and the heat exchange performance of the whole machine is improved. The fin holes of two adjacent fins are staggered, the refrigerant is contacted with the fins for a longer time, and therefore the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of finned heat exchanger, in particular to a new grid finned heat exchanger. BACKGROUND

[0002] Air conditioners are widely used in modern society, and the types of air conditioners are also increasing, such as commercial air conditioners, household air conditioners, engineering air conditioners, etc. Although there are many types, air conditioners basically include four major components: compressor, condenser, evaporator, and throttling device. The heat exchanger occupies a larger space in the air conditioning system and greatly affects the heat exchange performance, so there are many researches on heat exchangers. The market of finned heat exchanger is large and widely used. The finned heat exchanger can be used as an evaporator and a condenser. Generally, the finned heat exchanger is mainly composed of base pipes and fins, a certain number of fins are stacked together, and the base pipes are connected by being inserted into the base pipe holes of the fins. The air contacts the fins, and the base pipes contact the fins. When the refrigerant flows through the base pipe, the refrigerant transfers heat to the fins through the base pipe, and the fins exchange heat with the air.

[0003] However, the structure of the general finned heat exchanger is that a certain number of single fins are stacked together, and the contact surface of each base pipe and the fin is only the flange on the base pipe hole of the fin. If the flange is too low, the contact surface is small, the heat transfer is poor, and if the flange is too high, the fin spacing is large, the number of fins is reduced, and the heat exchange performance is reduced. The heat exchange process of the existing conventional finned heat exchanger is that the refrigerant is transferred to the base pipe, and then the base pipe is transferred to the fin. The heat exchange process is long, energy is wasted, and there are problems of low heat exchange efficiency and long heat exchange time. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present application provides a new grid finned heat exchanger, which aims to study a new finned heat exchanger structure to improve the heat exchange efficiency and reduce the heat exchange time.

[0005] The technical scheme adopted by the present application to solve its technical problems is: a new grid finned heat exchanger, comprising a liquid inlet pipe, a liquid inlet branch pipe, a plurality of staggered fins, a square refrigerant pipe, a liquid outlet pipe and a liquid outlet branch pipe, the liquid inlet pipe and the liquid inlet branch pipe are sealingly connected, the liquid inlet branch pipe and the square refrigerant pipe are sealingly connected, the fins are arranged in the fin mounting holes of the square refrigerant pipe, the fins and the square refrigerant pipe are sealingly connected, the square refrigerant pipe and the liquid outlet branch pipe are sealingly connected, and the liquid outlet branch pipe and the liquid outlet pipe are sealingly connected. The refrigerant exchanges heat with the fins inserted in the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, and saves the heat exchange time.

[0006] As a further improvement of the present application: the fins are provided with fin holes, and the fin holes of adjacent two fins are staggered.

[0007] As a further improvement of the present application: the fin hole is a "Hanzi" shape. By setting the fin hole to "Hanzi" shape, the contact area of the refrigerant and the fin is increased, further improving the heat exchange efficiency.

[0008] As a further improvement of the present application: the fin includes adjacent upper and lower fins, the upper and lower fins are staggered, the upper fin is sealingly connected with the square refrigerant pipe, and the lower fin is sealingly connected with the square refrigerant pipe. By providing the fin with staggered upper fin holes and lower fin holes, the refrigerant can be in contact with the fin for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency.

[0009] As a further improvement of the present application: the upper fin is provided with an upper fin hole, and the lower fin is provided with a lower fin hole, and the upper fin hole and the lower fin hole are staggered.

[0010] As a further improvement of the present application: the liquid inlet pipe is inclined, facilitating the flow of refrigerant.

[0011] As a further improvement of the present application: the angle between the liquid inlet pipe and the horizontal plane is 3-9°.

[0012] As a further improvement of the present application: the angle between the liquid inlet pipe and the horizontal plane is 3°.

[0013] As a further improvement of the present application: the angle between the liquid inlet pipe and the horizontal plane is 9°.

[0014] As a further improvement of the present application: the fin is perpendicular to the square refrigerant pipe.

[0015] As a further improvement of the present application: the square refrigerant pipe is made of stainless steel, which can reduce the production cost.

[0016] As a further improvement of the present application: the width of the fin hole is 2-5mm.

[0017] As a further improvement of the present application: the distance between the two adjacent fins is 0.8-1.4mm.

[0018] As a further improvement of the present application: the square refrigerant pipe is uniformly arranged along the vertical fin direction.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The present application exchanges heat by direct contact between the refrigerant and the fin inserted into the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, and saves the heat exchange time.

[0021] 2. The present application is characterized in that the fin holes of two adjacent fins are staggered, so that the refrigerant can contact the fins for a longer time, and heat is transferred to each fin, thereby improving the heat exchange efficiency and the heat exchange performance of the whole machine.

[0022] 3. The present application is characterized in that the fin holes are arranged in the shape of a Chinese character "fang", thereby increasing the contact area between the refrigerant and the fins and further improving the heat exchange efficiency.

[0023] 4. The present application is characterized in that the liquid inlet pipe is arranged in an inclined structure to facilitate the flow of the refrigerant, and the square refrigerant pipe is made of stainless steel to reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the present application.

[0025] Figure 2 is a schematic diagram of the refrigerant flow when the present application is in operation.

[0026] Figure 3 is a layout schematic diagram of the staggered arrangement of two adjacent fins.

[0027] Figure 4 is Figure 3 is an enlarged schematic diagram of the local structure at B.

[0028] Figure 5 is a front view of the fin.

[0029] Figure 6 is Figure 4 is an enlarged schematic diagram of the local structure at A.

[0030] Figure 7 is a structural schematic diagram of the square refrigerant pipe.

[0031] The drawings show: 1, liquid inlet branch pipe; 2, liquid inlet pipe; 3, square refrigerant pipe; 4, fin; 41, upper fin; 42, lower fin; 5, liquid outlet pipe; 6, liquid outlet branch pipe; 7, fin hole; 71, upper fin hole; 72, lower fin hole. DETAILED DESCRIPTION

[0032] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The present application has been further described in greater detail with reference to the accompanying drawings and examples.

[0033] Please refer to Figures 1-6 A new type of grid fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe and the liquid inlet branch pipe are sealingly connected, the liquid inlet branch pipe and the square refrigerant pipe are sealingly connected, the fin is arranged in the fin mounting hole of the square refrigerant pipe, the fin and the square refrigerant pipe are sealingly connected, the square refrigerant pipe and the liquid outlet branch pipe are sealingly connected, and the liquid outlet branch pipe and the liquid outlet pipe are sealingly connected.

[0034] The refrigerant enters the heat exchanger along the liquid inlet pipe, then flows into the square refrigerant pipe from the liquid inlet branch pipe, and exchanges heat by directly contacting with the fin inserted in the square refrigerant pipe, and then flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out from the liquid outlet pipe.

[0035] The traditional heat exchanger exchanges heat by transferring heat from the refrigerant to the copper pipe, and then transferring heat from the copper pipe to the fin. The heat exchanger of the present application reduces one heat exchange step, that is, the refrigerant directly contacts with the fin inserted in the square refrigerant pipe to exchange heat, thereby reducing the heat exchange step, improving the heat exchange efficiency and saving the heat exchange time.

[0036] The fin 4 is provided with a fin hole 7, and the fin holes 7 of the adjacent two fins are staggered.

[0037] By staggering the fin holes of the adjacent two fins, the refrigerant can contact the fins for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency.

[0038] The new fin heat exchanger changes the original heat exchange mode, exchanges heat by directly contacting the refrigerant with the fin inserted in the square refrigerant pipe, reduces the heat exchange step, improves the heat exchange efficiency, reduces the heat exchange time, and improves the heat exchange performance of the whole machine.

[0039] The fin hole is in the shape of a Chinese character "fang", which increases the contact area between the refrigerant and the fin, and further improves the heat exchange efficiency.

[0040] The fin 4 comprises adjacent upper fins 41 and lower fins 42, the upper fins and the lower fins are staggered, the upper fins are sealingly connected with the square refrigerant pipe, and the lower fins are sealingly connected with the square refrigerant pipe.

[0041] The upper fin 41 is provided with an upper fin hole 71, and the lower fin 42 is provided with a lower fin hole 72, and the upper fin hole and the lower fin hole are staggered.

[0042] By staggering the upper fin holes and the lower fin holes of the adjacent upper fins and lower fins, the refrigerant can contact the fins for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency.

[0043] The fins are perpendicular to the square refrigerant pipes.

[0044] The square refrigerant pipes are made of stainless steel. Since traditional base pipes are mostly copper and have high cost, the square refrigerant pipes made of stainless steel can reduce the production cost.

[0045] The interval between two adjacent fins is 0.8-1.4mm.

[0046] Preferably, the interval between two adjacent fins is 0.8mm.

[0047] Preferably, the interval between two adjacent fins is 1.4mm.

[0048] The liquid inlet pipe is inclined, so as to facilitate the flow of refrigerant. The angle between the liquid inlet pipe and the horizontal plane is 3-9°.

[0049] Preferably, the angle between the liquid inlet pipe and the horizontal plane is 3°.

[0050] Preferably, the angle between the liquid inlet pipe and the horizontal plane is 9°.

[0051] Preferably, the angle between the liquid inlet pipe and the horizontal plane is 4°.

[0052] The width d1 of the fin hole is 2-5mm.

[0053] The length d2 of the fin hole can be determined according to the hole diameter of the liquid inlet branch pipe.

[0054] The number of square refrigerant pipes can be determined according to the required fin length, so as to facilitate uniform heat transfer.

[0055] The square refrigerant pipes are uniformly arranged along the vertical fin direction.

[0056] The present application develops a new type of finned heat exchanger structure, changes the original structure, and improves the heat exchange efficiency and reduces the heat exchange time by directly contacting the refrigerant with the fins inserted in the square refrigerant pipes for heat exchange, so as to improve the heat exchange performance of the whole machine, and the use of materials can also reduce the cost.

[0057] The working principle of the present application is as follows:

[0058] Please refer to Figure 1 and Figure 2 , the refrigerant enters the heat exchanger along the liquid inlet pipe 2, the liquid inlet pipe is inclined, so as to facilitate the flow of refrigerant, the liquid inlet branch pipe 1 flows into the corresponding square refrigerant pipe 3, the refrigerant directly contacts the fin area inserted in the square refrigerant pipe for heat exchange, and then the heat is transferred to the whole area of the fin.

[0059] The fin arrangement form is as follows Figure 3The fins with fin holes are staggered, the upper fin holes and the lower fin holes are staggered, when the refrigerant flows down from the liquid inlet branch pipe; the refrigerant first contacts the positions other than the upper fin holes of the upper fins, then the refrigerant contacts the fins for a period of time, and then flows to the next fin along the upper fin holes; due to the staggered arrangement of the upper fin holes and the lower fin holes, the refrigerant first contacts the lower fins at positions other than the lower fin holes, and then contacts the lower fins along the lower fin holes after a period of time; all the fins are staggered, which facilitates the refrigerant to contact the fins for a longer time and facilitates heat transfer to each fin; and then the refrigerant flows to the liquid outlet pipe 5 along the liquid outlet branch pipe 6, and then flows out of the liquid outlet pipe to continue to operate in the whole machine.

[0060] Case 1:

[0061] A novel grid fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe is sealingly connected with the liquid inlet branch pipe, the liquid inlet branch pipe is sealingly connected with the square refrigerant pipe, the fins are arranged in the fin mounting holes of the square refrigerant pipe, the fins are sealingly connected with the square refrigerant pipe, the square refrigerant pipe is sealingly connected with the liquid outlet branch pipe, and the liquid outlet branch pipe is sealingly connected with the liquid outlet pipe; the refrigerant directly contacts the fins inserted in the square refrigerant pipe for heat exchange, which reduces the heat exchange steps, improves the heat exchange efficiency, and saves the heat exchange time.

[0062] The fins 4 are provided with fin holes 7, and the fin holes 7 of adjacent two fins are staggered. By staggering the fin holes of adjacent two fins, the refrigerant can contact the fins for a longer time, and heat transfer to each fin is facilitated, thereby improving the heat exchange efficiency.

[0063] The novel fin heat exchanger changes the original heat transfer mode, the refrigerant directly contacts the fins inserted in the square refrigerant pipe for heat exchange, which reduces the heat exchange steps, improves the heat exchange efficiency, reduces the heat exchange time, and improves the heat exchange performance of the whole machine.

[0064] Case 2:

[0065] A new grid type fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe and the liquid inlet branch pipe are sealingly connected, the liquid inlet branch pipe and the square refrigerant pipe are sealingly connected, the fin is arranged in the fin mounting hole of the square refrigerant pipe, the fin and the square refrigerant pipe are sealingly connected, the square refrigerant pipe and the liquid outlet branch pipe are sealingly connected, and the liquid outlet branch pipe and the liquid outlet pipe are sealingly connected; the fin 4 is provided with a fin hole 7, and the fin holes 7 of the two adjacent fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, then flows into the square refrigerant pipe through the liquid inlet branch pipe, and exchanges heat by directly contacting with the fins inserted in the square refrigerant pipe, then flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out of the liquid outlet pipe and continues to operate in the whole machine. The fin holes of the two adjacent fins are staggered, which facilitates the refrigerant to contact with the fins for a longer time, facilitates heat transfer to each fin, and thus improves the heat exchange efficiency. The new fin heat exchanger changes the original heat transfer mode, exchanges heat by directly contacting the refrigerant with the fins inserted in the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, reduces the heat exchange time, and improves the heat exchange performance of the whole machine.

[0066] The fin hole is " " shaped, which increases the contact area of the refrigerant and the fin, and further improves the heat exchange efficiency.

[0067] Case three:

[0068] A new grid type fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe and the liquid inlet branch pipe are sealingly connected, the liquid inlet branch pipe and the square refrigerant pipe are sealingly connected, the fin is arranged in the fin mounting hole of the square refrigerant pipe, the fin and the square refrigerant pipe are sealingly connected, the square refrigerant pipe and the liquid outlet branch pipe are sealingly connected, and the liquid outlet branch pipe and the liquid outlet pipe are sealingly connected; the fin 4 is provided with a fin hole 7, and the fin holes 7 of the two adjacent fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, then flows into the square refrigerant pipe through the liquid inlet branch pipe, and exchanges heat by directly contacting with the fins inserted in the square refrigerant pipe, then flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out of the liquid outlet pipe and continues to operate in the whole machine. The fin holes of the two adjacent fins are staggered, which facilitates the refrigerant to contact with the fins for a longer time, facilitates heat transfer to each fin, and thus improves the heat exchange efficiency. The new fin heat exchanger changes the original heat transfer mode, exchanges heat by directly contacting the refrigerant with the fins inserted in the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, reduces the heat exchange time, and improves the heat exchange performance of the whole machine. The fin hole is " " shaped, which increases the contact area of the refrigerant and the fin, and further improves the heat exchange efficiency.

[0069] The fin 4 includes adjacent upper fin 41 and lower fin 42, the upper fin and lower fin are staggered, the upper fin is sealed with the square refrigerant pipe, and the lower fin is sealed with the square refrigerant pipe. The upper fin 41 is provided with an upper fin hole 71, and the lower fin 42 is provided with a lower fin hole 72, and the upper fin hole and the lower fin hole are staggered. By providing staggered upper fin holes and lower fin holes in adjacent upper fins and lower fins, the refrigerant can contact the fins for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency.

[0070] Case four:

[0071] A new grid fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe is sealed with the liquid inlet branch pipe, the liquid inlet branch pipe is sealed with the square refrigerant pipe, the fin is arranged in the fin mounting hole of the square refrigerant pipe, the fin is sealed with the square refrigerant pipe, the square refrigerant pipe is sealed with the liquid outlet branch pipe, and the liquid outlet branch pipe is sealed with the liquid outlet pipe; the fin 4 is provided with a fin hole 7, and the fin holes 7 of the adjacent two fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, then flows into the square refrigerant pipe from the liquid inlet branch pipe, and exchanges heat by directly contacting the fins inserted in the square refrigerant pipe, then flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out of the liquid outlet pipe. By staggering the fin holes of the adjacent two fins, the refrigerant can contact the fins for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency. The new fin heat exchanger changes the original heat transfer mode, exchanges heat by directly contacting the fins inserted in the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, reduces the heat exchange time, and improves the heat exchange performance of the whole machine. The fin hole is " " shaped, which increases the contact area of the refrigerant and the fin, and further improves the heat exchange efficiency. The fin 4 includes adjacent upper fin 41 and lower fin 42, the upper fin and lower fin are staggered, the upper fin is sealed with the square refrigerant pipe, and the lower fin is sealed with the square refrigerant pipe. The upper fin 41 is provided with an upper fin hole 71, and the lower fin 42 is provided with a lower fin hole 72, and the upper fin hole and the lower fin hole are staggered. By providing staggered upper fin holes and lower fin holes in adjacent upper fins and lower fins, the refrigerant can contact the fins for a longer time, and heat can be transferred to each fin, thereby improving the heat exchange efficiency.

[0072] The fin is perpendicular to the square refrigerant pipe. The square refrigerant pipe is made of stainless steel. Since the traditional base pipe is mostly copper, the cost is high, and the square refrigerant pipe of the present application is made of stainless steel, which can reduce the production cost.

[0073] Case five:

[0074] A new type of grid fin heat exchanger, comprising a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe and the liquid inlet branch pipe are sealingly connected, the liquid inlet branch pipe and the square refrigerant pipe are sealingly connected, the fin is arranged in the fin mounting hole of the square refrigerant pipe, the fin and the square refrigerant pipe are sealingly connected, the square refrigerant pipe and the liquid outlet branch pipe are sealingly connected, and the liquid outlet branch pipe and the liquid outlet pipe are sealingly connected; the fin 4 is provided with a fin hole 7, and the fin holes 7 of two adjacent fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, then flows into the square refrigerant pipe through the liquid inlet branch pipe, exchanges heat with the fin area inserted in the square refrigerant pipe, and then flows to the liquid outlet pipe along the liquid outlet branch pipe. After flowing out of the liquid outlet pipe, it continues to operate in the whole machine. The fin holes of the two adjacent fins are staggered, which facilitates the refrigerant to contact the fins for a longer time, facilitates heat transfer to each fin, and thus improves the heat exchange efficiency. The fin hole is in the shape of a "Dang" character, which increases the contact area of the refrigerant and the fin, and further improves the heat exchange efficiency. The fin 4 includes adjacent upper fins 41 and lower fins 42, the upper fins and the lower fins are staggered, the upper fins are sealingly connected with the square refrigerant pipe, and the lower fins are sealingly connected with the square refrigerant pipe. The upper fin 41 is provided with an upper fin hole 71, and the lower fin 42 is provided with a lower fin hole 72, and the upper fin hole and the lower fin hole are staggered. The upper fin hole and the lower fin hole of the adjacent upper fin and lower fin are staggered, which facilitates the refrigerant to contact the fins for a longer time, facilitates heat transfer to each fin, and thus improves the heat exchange efficiency. The fin and the square refrigerant pipe are perpendicular to each other. The square refrigerant pipe is made of stainless steel. Since the traditional base pipe is mostly copper, the cost is high, and the square refrigerant pipe of the present application is made of stainless steel, which can reduce the production cost.

[0075] The distance between the two adjacent fins is 0.8mm. The liquid inlet pipe is inclined, thereby facilitating the flow of refrigerant. The angle between the liquid inlet pipe and the horizontal plane is 3°. The width d1 of the fin hole is 2mm. The length d2 of the fin hole is determined according to the hole diameter of the liquid inlet branch pipe. The number of square refrigerant pipes is determined according to the required fin length, which facilitates uniform heat transfer. The square refrigerant pipes are uniformly arranged along the vertical fin direction.

[0076] Case six:

[0077] The application discloses a novel grid fin heat exchanger, which comprises a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe is in sealed connection with the liquid inlet branch pipe, the liquid inlet branch pipe is in sealed connection with the square refrigerant pipe, the fins are arranged in fin mounting holes of the square refrigerant pipe, the fins are in sealed connection with the square refrigerant pipe, the square refrigerant pipe is in sealed connection with the liquid outlet branch pipe, and the liquid outlet branch pipe is in sealed connection with the liquid outlet pipe; the fins 4 are provided with fin holes 7, and the fin holes 7 of two adjacent fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, flows into the square refrigerant pipe from the liquid inlet branch pipe, exchanges heat by directly contacting with the fins inserted in the fin area of the square refrigerant pipe, flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out of the liquid outlet pipe and continues to operate in the whole machine. The fin holes of two adjacent fins are staggered, so that the refrigerant can contact the fins for a longer time, heat is transferred to each fin, and the heat exchange efficiency is improved. The fin holes are in the shape of a Chinese character 'fang', the contact area of the refrigerant and the fins is increased, and the heat exchange efficiency is further improved. The fins 4 comprise adjacent upper fins 41 and lower fins 42, the upper fins and the lower fins are staggered, the upper fins are in sealed connection with the square refrigerant pipe, and the lower fins are in sealed connection with the square refrigerant pipe. The upper fins 41 are provided with upper fin holes 71, the lower fins 42 are provided with lower fin holes 72, and the upper fin holes and the lower fin holes are staggered. The upper fin holes and the lower fin holes of two adjacent fins are staggered, so that the refrigerant can contact the fins for a longer time, heat is transferred to each fin, and the heat exchange efficiency is improved. The fins are perpendicular to the square refrigerant pipe. The square refrigerant pipe is made of stainless steel. Since traditional base pipes are mostly copper and have high cost, the square refrigerant pipe of the application is made of stainless steel, so that the production cost is reduced.

[0078] The distance between two adjacent fins is 1.4 mm. The liquid inlet pipe is in an inclined structure, so that the refrigerant can flow conveniently. The angle between the liquid inlet pipe and the horizontal plane is 9°. The width d1 of the fin holes is 5 mm. The length d2 of the fin holes can be determined according to the hole diameter of the liquid inlet branch pipe. The number of the square refrigerant pipes can be determined according to the required fin length, so that the heat can be transferred uniformly. The square refrigerant pipes are arranged uniformly along the vertical fin direction.

[0079] Case seven:

[0080] The application discloses a novel grid fin heat exchanger, which comprises a liquid inlet pipe 2, a liquid inlet branch pipe 1, a plurality of staggered fins 4, a square refrigerant pipe 3, a liquid outlet pipe 5 and a liquid outlet branch pipe 6, the liquid inlet pipe is in sealed connection with the liquid inlet branch pipe, the liquid inlet branch pipe is in sealed connection with the square refrigerant pipe, the fins are arranged in fin mounting holes of the square refrigerant pipe, the fins are in sealed connection with the square refrigerant pipe, the square refrigerant pipe is in sealed connection with the liquid outlet branch pipe, and the liquid outlet branch pipe is in sealed connection with the liquid outlet pipe; the fins 4 are provided with fin holes 7, and the fin holes 7 of two adjacent fins are staggered. The refrigerant enters the heat exchanger along the liquid inlet pipe, flows into the square refrigerant pipe from the liquid inlet branch pipe, exchanges heat by directly contacting with the fins inserted in the fin area of the square refrigerant pipe, flows to the liquid outlet pipe along the liquid outlet branch pipe, and then flows out of the liquid outlet pipe and continues to operate in the whole machine. The fin holes of two adjacent fins are staggered, so that the refrigerant can contact the fins for a longer time, heat is transferred to each fin, and the heat exchange efficiency is improved. The fin holes are in the shape of a Chinese character 'fang', the contact area of the refrigerant and the fins is increased, and the heat exchange efficiency is further improved. The fins 4 comprise adjacent upper fins 41 and lower fins 42, the upper fins and the lower fins are staggered, the upper fins are in sealed connection with the square refrigerant pipe, and the lower fins are in sealed connection with the square refrigerant pipe. The upper fins 41 are provided with upper fin holes 71, the lower fins 42 are provided with lower fin holes 72, and the upper fin holes and the lower fin holes are staggered. The upper fin holes and the lower fin holes of two adjacent fins are staggered, so that the refrigerant can contact the fins for a longer time, heat is transferred to each fin, and the heat exchange efficiency is improved. The fins are perpendicular to the square refrigerant pipe. The square refrigerant pipe is made of stainless steel. Since traditional base pipes are mostly copper and have high cost, the square refrigerant pipe of the application is made of stainless steel, so that the production cost is reduced.

[0081] The liquid inlet pipe is in an inclined structure, so that the refrigerant can flow conveniently. The angle between the liquid inlet pipe and a horizontal plane is 4 degrees. The distance between two adjacent fins is 1.4 mm. The width d1 of the fin holes is 5 mm. The length d2 of the fin holes can be determined according to the hole diameter of the liquid inlet branch pipe. The number of the square refrigerant pipes can be determined according to the required fin length, so that the heat can be transferred uniformly. The square refrigerant pipes are arranged uniformly along the vertical fin direction.

[0082] The main functions of the application are as follows:

[0083] The application carries out heat exchange by direct contact of refrigerant with fins inserted in the square refrigerant pipe, reduces the heat exchange steps, improves the heat exchange efficiency, and saves the heat exchange time. The staggered upper fin holes and lower fin holes are arranged on the fins, which facilitates the refrigerant to contact with the fins for a longer time and facilitates the heat transfer to each fin. The upper fin holes and lower fin holes are arranged in the shape of Chinese character "fang", which increases the contact area of the refrigerant and the fins and further improves the heat exchange efficiency. The inclined structure of the liquid inlet pipe facilitates the refrigerant flow; the square refrigerant pipe is made of stainless steel, which can reduce the production cost.

[0084] In the description of the present application, it should be understood that the terms "upper end surface", "lower end surface", "top", "bottom", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of the description of the present application, and therefore cannot be understood as a limitation on the actual use direction of the present application. The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A novel gilled fin heat exchanger characterized in that: The application relates to a refrigerant tube, which comprises an inlet pipe, an inlet branch pipe, a plurality of staggered fins, a square refrigerant pipe, an outlet pipe and an outlet branch pipe, wherein the inlet pipe is connected with the inlet branch pipe in a sealing mode, the inlet branch pipe is connected with the square refrigerant pipe in a sealing mode, the fins are arranged in the square refrigerant pipe through fin mounting holes, the fins are connected with the square refrigerant pipe in a sealing mode, the square refrigerant pipe is connected with the outlet branch pipe in a sealing mode, and the outlet branch pipe is connected with the outlet pipe in a sealing mode; the fins are provided with fin holes, the fin holes of two adjacent fins are staggered, the fin holes are in a " " shape, and the inlet pipe is in an inclined structure.

2. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The fins comprise adjacent upper fins and lower fins, the upper fins and the lower fins are staggered, the upper fins are connected with the square refrigerant pipe in a sealing mode, and the lower fins are connected with the square refrigerant pipe in a sealing mode.

3. A novel gilled fin heat exchanger as claimed in claim 2, wherein: The upper fins are provided with upper fin holes, the lower fins are provided with lower fin holes, and the upper fin holes and the lower fin holes are staggered.

4. A novel gilled fin heat exchanger as claimed in claim 3, wherein: The angle between the inlet pipe and the horizontal plane is 3-9 degrees.

5. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The fins are perpendicular to the square refrigerant pipe.

6. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The square refrigerant pipe is made of stainless steel.

7. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The width of the fin holes is 2-5 mm.

8. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The distance between two adjacent fins is 0.8-1.4 mm.

9. A novel gilled fin heat exchanger as claimed in claim 1, wherein: The square refrigerant pipe is uniformly arranged along the direction perpendicular to the fins.

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