CN104279893B - A kind of double-layer staggered stream groove heat exchanger - Google Patents

Abstract

The invention relates to a double-layer cross-flow groove heat exchanger, which comprises a tightly sealed end cover layer, an interlayer and a bottom layer, and the end cover layer is provided with a liquid inlet and a liquid outlet leading to the bottom layer. The interlayer is provided with small holes leading to the bottom layer, and the bottom layer is provided with a plurality of partitions to form a plurality of grooves. By improving the structure of the heat exchanger, the invention not only makes the bottom layer more evenly heated, prolongs the service life of the heat exchanger, but also greatly improves the heat exchange efficiency. At the same time, the heat exchange liquid can be recycled, which simplifies the use steps and saves energy. resource. The invention can not only be applied to the heat dissipation of home appliances such as air conditioners, but also can be applied to industrial production such as metallurgy.

Description

A double-layer cross-flow groove heat exchanger

technical field

The invention relates to an improved heat exchanger, especially a double-layer cross-flow groove heat exchanger.

Background technique

A heat exchanger is a heat exchange device that transfers part of the heat of the hot fluid to the cold fluid so that the temperature of the fluid reaches the specified index of the process, also known as a heat exchanger. As heat transfer equipment, heat exchangers are widely used in the field of boiler heating and ventilation. According to statistics, in the modern chemical industry, the investment in heat exchangers accounts for about 30% of the total investment in equipment. In refineries, heat exchangers account for all About 40% of the process equipment, seawater desalination process devices are almost all composed of heat exchangers. With the rapid development of energy-saving technology, there are more and more types of heat exchangers.

According to the principle and method of heat exchange between cold and hot fluids, heat exchangers can basically be divided into three categories, namely partition type, hybrid type and heat storage type. Among these three types of heat exchangers, partition wall heat exchangers are the most widely used.

The characteristic of the partition wall heat exchanger is that the cold and hot fluids are separated by a layer of solid wall (tube or plate), do not mix, and exchange heat through the partition wall.

Therefore, regarding the performance of the partition wall heat exchanger, whether the contact surface is heated evenly affects the service life, and the size of the contact surface affects the heat exchange efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved heat exchanger, which can not only make the heat exchanger evenly heated, but also improve the heat exchange efficiency.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A double-layer cross-flow groove heat exchanger, including a tightly sealed end cover layer, an interlayer and a bottom layer, the end cover layer is provided with a liquid inlet and a liquid outlet leading to the bottom layer, and the interlayer A small hole leading to the bottom layer is provided, and a plurality of partitions are arranged on the bottom layer to form a plurality of grooves.

Preferably, one liquid inlet is arranged at the center of the end cover layer, and two liquid outlets are arranged on the same line as the liquid inlet and symmetrically arranged on both sides of the liquid inlet , and located near the edge of the end cap layer.

Preferably, the interlayer is provided with a plurality of small holes, arranged in a direction perpendicular to the line connecting the liquid inlet and the liquid outlet, and symmetrically arranged in two rows with respect to the liquid inlet, including the first row of small holes and the second row Small hole.

Preferably, the two rows of small holes on the interlayer are respectively arranged inside the two liquid outlets.

Preferably, the plurality of separators are arranged in an S shape, and a plurality of grooves are formed on the bottom layer, and the plurality of grooves are divided into two types: first grooves and second grooves.

Preferably, the first row of holes is aligned with the second groove, and the second row of holes is aligned with the first groove.

Further, the widths of the first row of small holes and the second row of small holes are respectively consistent with the widths of the second groove and the first groove.

Preferably, a baffle plate is also arranged in the groove to form a U-shaped channel in the groove.

Preferably, the corners of the end cover layer, the interlayer and the bottom layer are correspondingly provided with a plurality of fixing holes, and clamping bolts are used to pass through the fixing holes to clamp the end cover layer, the interlayer and the bottom layer.

Further, the gap between the end cover layer, the interlayer and the bottom layer is filled with a sealant or provided with a sealing gasket.

The beneficial effects of the present invention are: by improving the structure of the heat exchanger, not only the bottom layer is heated more evenly, the service life of the heat exchanger is prolonged, but also the heat exchange efficiency is greatly improved. At the same time, the heat exchange liquid can be recycled, simplifying The usage steps are simplified to save resources.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment, wherein:

Fig. 1 is according to a specific embodiment of the present invention, the longitudinal sectional view of the structure of heat exchanger of the present invention;

Fig. 2 is a schematic longitudinal sectional view of the liquid flow direction of the heat exchanger according to the present invention;

Fig. 3 is a schematic longitudinal sectional view of the liquid flow direction of the heat exchanger of the present invention according to a specific embodiment of the present invention.

detailed description

As shown in FIG. 1 , it is a schematic structural diagram of an embodiment of a heat exchanger according to the present invention.

In this embodiment, the heat exchanger includes an end cover layer 1 , an interlayer 2 and a bottom layer 3 .

The center of the end cover layer 1 is provided with a liquid inlet 11, and the two sides of the liquid inlet 11 are symmetrically provided with a first liquid outlet 121 and a second liquid outlet 122, which are respectively located on the sides of the end cover layer 1. Near the edge, the first liquid outlet 121 and the second liquid outlet 122 are directly connected to the bottom layer 3 . Preferably, the liquid inlet 11 is on the same straight line as the first liquid outlet 121 and the second liquid outlet 122 . The purpose of setting the first liquid outlet 121 and the second liquid outlet 122 near the edge of the end cover layer 1 is to allow the liquid to flow through the inner area of the heat exchanger as much as possible after entering from the liquid inlet 11, and then Then flow out from the first liquid outlet 121 and the second liquid outlet 122, so as to make the bottom layer 3 heated more evenly and improve the heat exchange efficiency. The flow path of the liquid will be described in detail below.

The interlayer 2 is provided with a plurality of small holes, preferably rectangular, arranged along a direction perpendicular to the line connecting the liquid inlet 11 and the liquid outlet, and symmetrically arranged with the first row of small holes 211 and the second row of small holes 211 with respect to the liquid inlet 11. There are two rows of small holes 212 in two rows. The first row of small holes 211 and the second row of small holes 212 are respectively disposed inside the first liquid outlet 121 and the second liquid outlet 122 . The purpose of arranging the first row of small holes 211 and the second row of small holes 212 symmetrically with respect to the liquid inlet 11 is that the liquid enters through the liquid inlet 11 and splits, and passes through the first row of small holes 211 and the second row of small holes 212 respectively. Access to the bottom layer, the purpose of this and the flow path of the liquid are described in detail below.

The bottom layer 3 is provided with an S-shaped partition 31 , and the S-shaped partition 31 divides the bottom layer 3 into a first groove 311 and a second groove 312 . One end of the first groove 311 is aligned with the second row of small holes 212 , and one end of the second groove 312 is aligned with the first row of small holes 211 . Preferably, one end of the first groove 311 is consistent with the width of the second row of small holes 212, and one end of the second groove 312 is consistent with the width of the first row of small holes 211, so that Make sure that the liquid flowing from a small hole can only enter its corresponding groove. As a further improvement to the above embodiment, a baffle plate 32 is also provided in the grooves 311 and 312 to form a U-shaped channel in the grooves to increase the heat exchange area.

As an improvement to the above embodiment, the four corners of the end cover layer 1, the interlayer 2 and the bottom layer 3 are respectively provided with a fixing hole 4, and the clamping bolts are used to pass through the fixing holes 4 to clamp the end cover layer 1, Mezzanine 2 and ground floor 3.

As a further improvement to the above-mentioned embodiment, the gaps between the end cover layer 1 , the interlayer 2 and the bottom layer 3 are also filled with a sealant or provided with a sealing gasket.

As shown in FIG. 2 , it is a schematic vertical cross-sectional view of the liquid flow direction of the heat exchanger according to the present invention.

The liquid 5 enters the double-layer cross-flow groove heat exchanger from the liquid inlet 11, and the liquid 5 can only flow out from the first row of small holes 211 and the second row of small holes 212 of the interlayer 2, so that the Said liquid 5 is just divided into first and second two liquid streams. The first liquid flow 511 flows out through the first row of small holes 211 and enters the second groove 312, and finally flows out from the second liquid outlet 122. Similarly, the second liquid flow 512 It flows out through the second row of small holes 212 and enters the first groove 311 , and finally flows out from the first liquid outlet 121 . Through the shunting effect of the small holes 211 in the first row and the small holes 212 in the second row, the two liquid streams enter the bottom layer 3 and flow in opposite directions in their respective grooves, so that the bottom layer 3 is heated more evenly, thereby improving the heat transfer rate. Thermal efficiency.

As shown in FIG. 3 , it is a schematic vertical cross-sectional view of the liquid flow direction of the heat exchanger of the present invention according to a specific embodiment of the present invention. The flow path of the liquid is as described above with respect to FIG. 2 . Due to the design of the S-shaped partition 31, the two sides of the S-shaped partition 31 form a staggered flow of liquid, so that the bottom layer 3 is evenly heated; at the same time, due to the design of the baffle 32, in the groove A U-shaped flow channel is formed to increase the heat exchange area.

By improving the structure of the heat exchanger, the invention not only makes the bottom layer more evenly heated, prolongs the service life of the heat exchanger, but also greatly improves the heat exchange efficiency. At the same time, the heat exchange liquid can be recycled, which simplifies the use steps and saves resource. However, the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above examples. For example, as a further improvement to the above examples, in order to make full use of the heat in the liquid and save resources, you can A connecting pipe is arranged between the outlet and the liquid inlet, and the outflowing liquid is introduced into the heat exchanger through the liquid inlet again. Therefore, as long as the technical effect of the present invention is achieved by any same or similar means, it shall fall within the protection scope of the present invention.

Claims (10)

1. a double-layer staggered stream groove heat exchanger, it is characterized in that: comprise the end cap layers of tight seal laminating, interlayer and bottom, described end cap layers is provided with liquid-inlet and the liquid outlet leading to described bottom, described interlayer is provided with the aperture leading to described bottom, described bottom is provided with multiple dividing plate, forms multiple groove.

2. one according to claim 1 double-layer staggered stream groove heat exchanger, it is characterized in that: described liquid-inlet is set to one, be arranged at the center of described end cap layers, described liquid outlet is set to two, with described liquid-inlet conllinear, the both sides being arranged at described liquid-inlet symmetrically, and be positioned at the submarginal position of described end cap layers.

3. one according to claim 2 double-layer staggered stream groove heat exchanger, it is characterized in that: described interlayer is provided with multiple aperture, along the direction spread configuration perpendicular to liquid-inlet and liquid outlet line, and be set to two row symmetrically about liquid-inlet, comprise first row aperture and secondary series aperture.

4. one according to claim 3 double-layer staggered stream groove heat exchanger, is characterized in that: two row apertures on described interlayer are arranged at the inner side of two liquid outlets respectively.

5. one according to claim 4 double-layer staggered stream groove heat exchanger, is characterized in that: the S-type setting of described multiple dividing plate, described bottom forms multiple groove, and described multiple groove is divided into the first groove and the second groove two type.

6. one according to claim 5 double-layer staggered stream groove heat exchanger, is characterized in that: described first row aperture aligns with described second groove, and described secondary series aperture aligns with described first groove.

7. one according to claim 6 double-layer staggered stream groove heat exchanger, is characterized in that: the width of described first row aperture and described secondary series aperture is consistent with the width of described second groove and described first groove respectively.

8. one according to claim 6 double-layer staggered stream groove heat exchanger, is characterized in that: be also provided with a baffle plate in described groove, forms U-shaped passage in the trench.

9. one according to claim 1 double-layer staggered stream groove heat exchanger, it is characterized in that: the edge of described end cap layers, interlayer and bottom is provided with multiple fixing hole accordingly, adopt fishbolt through described fixing hole pinching end cap rock, interlayer and bottom.

10. one according to claim 1 double-layer staggered stream groove heat exchanger, is characterized in that: described end cap layers, interlayer and bottom are filled with sealant between any two or are provided with gasket seal.