CN212339688U - Evaporative condenser and refrigerating system - Google Patents

Abstract

The utility model relates to the technical field of refrigeration equipment, in particular to an evaporative condenser and a refrigeration system; the evaporative condenser comprises a shell, and an exhaust device, a water retaining layer, a spraying device and a heat exchanger which are sequentially arranged on the shell from top to bottom, wherein the water retaining layer comprises a plurality of corrugated plates; a plurality of the buckled plate is followed the plane at manger plate layer place links to each other in proper order, is formed with the air current route between the adjacent buckled plate. The evaporative condenser provided by the utility model is provided with the water retaining layer, and the water retaining layer can block the water drops which are not gasified and are carried in the air flow rising process, so that the water drops fall back to the lower water collecting tray, the water recovery amount is improved, the water loss is reduced, and the purposes of water saving and environmental protection are achieved; the corrosion effect of water drops on the shell and the exhaust device of the evaporative condenser is reduced.

Description

Evaporative condenser and refrigerating system

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to an evaporative condenser and refrigerating system.

Background

The application of the refrigeration technology relates to various fields of national economy and permeates various aspects of national life. With the increasing severity of the phenomena of water resource shortage and power resource shortage, the energy-saving and water-saving performance of the refrigeration system is more and more emphasized. The condenser is the main heat exchange equipment in the refrigeration system, and can be divided into three categories, namely a water cooling type, an air cooling type and an evaporation type according to the difference of cooling media. Evaporative condensers have a higher heat transfer coefficient than other types of condensers.

The evaporative condenser mainly comprises a water collecting tray, a heat exchanger, a spraying device, an exhaust device and the like. Cooling water in the spraying device is sprayed onto the heat exchanger through the nozzle, when overheated high-pressure refrigerant gas discharged by the compressor enters the heat exchanger, the cooling water continuously sprayed on the outer side of the heat exchanger forms a film layer to flow downwards along the outer wall of the heat exchanger, the film layer absorbs heat of the refrigerant, part of the water is evaporated into water vapor, and the water vapor is taken away by air sucked by the exhaust device; and the refrigerant in the gas state in the heat exchanger is gradually condensed into the liquid state by heat exchange with the cooling water and the air. Under an ideal state, the part of the cooling water converted into water vapor is sucked by an exhaust device and discharged into the atmosphere, and the rest part of the cooling water is collected into a water collecting tray at the lower end of the heat exchanger for recycling; in actual operation, a part of small water drops are carried in the water vapor and are discharged along with the water vapor, so that not only is the waste of cooling water caused, but also certain corrosion effect is exerted on an exhaust device and a shell of the evaporative condenser by humid air formed during discharge.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

The utility model provides an evaporative condenser, which comprises a shell, an exhaust device, a water retaining layer, a spraying device and a heat exchanger, wherein the exhaust device, the water retaining layer, the spraying device and the heat exchanger are sequentially arranged on the shell from top to bottom; the corrugated plates are sequentially connected along the extension direction of the plane where the water retaining layer is located, and an airflow passage is formed between every two adjacent corrugated plates.

In one embodiment, the crests of each corrugated sheet are connected to the troughs of an adjacent corrugated sheet.

In one embodiment, the water-retaining layer is made of a hydrophilic material.

In one embodiment, the hydrophilic material comprises plant fibers.

In one embodiment, the corrugated sheet is made of plant fibers sintered with resin.

In one embodiment, the water barrier layer is made of a non-woven material.

In one embodiment, the edge of the water barrier is provided with a flange, and the water barrier is mounted in the shell through the flange.

In one embodiment, the exhaust means is an axial fan.

A second aspect of the present invention provides a refrigeration system, including the above evaporative condenser, further including an indoor unit, an outdoor unit, a compressor, and a throttling element, wherein the outdoor unit is connected to the evaporative condenser through a refrigerant pipe.

The utility model has the advantages that: the evaporative condenser provided by the utility model is provided with the water retaining layer, and the water retaining layer can block the water drops which are not gasified and carried in the air flow rising process, so that the water drops fall back to the water collecting tray at the lower part, the water recovery amount is improved, the water loss is reduced, and the purposes of water saving and environmental protection are achieved; the corrosion effect of water drops on the shell of the evaporative condenser and the exhaust device is reduced; the utility model provides a refrigerating system maintains that maintenance is convenient, the running cost is low.

Drawings

Fig. 1 is a schematic structural diagram of an evaporative condenser according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a water retaining layer according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a refrigeration system according to an embodiment of the present invention;

description of reference numerals: 1. an evaporative condenser; 2. a housing; 3. an exhaust device; 4. a water retaining layer; 41. a corrugated plate; 5. a spraying device; 51. a water circulating pump; 52. a nozzle; 53. a water collection tray; 54. a float valve; 6. a heat exchanger; 7. an indoor unit; 8. an outdoor unit; 9. and a stop valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 and fig. 2, a first aspect of the present invention provides an evaporative condenser 1, which includes a casing 2, and an exhaust device 3, a water blocking layer 4, a spray device 5 and a heat exchanger 6, which are sequentially disposed on the casing 2 from top to bottom, wherein the water blocking layer 4 includes a plurality of corrugated plates 41; the corrugated plates 41 are sequentially connected along the extension direction of the plane of the water blocking layer 4, and an air flow passage is formed between the adjacent corrugated plates 41. Specifically, the shower device 5 includes a circulating water pump 51, a pipe, a nozzle 52, and a water collection tray 53.

When the evaporative condenser 1 provided by the first aspect of the present invention is in operation, cooling water is uniformly sprayed on the outer surface of the heat exchanger 6 by the spraying device 5, forming a thin water film; the refrigerant enters from the upper part of the heat exchanger 6, and the condensed liquid refrigerant flows out from the lower part of the heat exchanger 6; after the water sprayed to the heat exchanger 6 absorbs the heat of the refrigerant in the heat exchanger 6, a part of the water is evaporated to become water vapor, and the rest of the water falls into the water collecting tray 53 at the lower part for recycling; the exhaust device 3 forces air to pass through the heat exchanger 6 to promote water film evaporation, forces the heat exchanger 6 to discharge heat, and enables water drops after heat absorption to be cooled by the air in the falling process; the water retaining layer 4 can absorb the water drops which are not gasified in the forced ventilation process of the exhaust device 3, so that the water drops slowly fall back to the lower water collecting tray 53, the water consumption is reduced, and the purposes of water saving and environmental protection are achieved; and the water-retaining layer 4 reduces the corrosion of water drops to the evaporative condenser housing 2 and the exhaust 3.

In one embodiment, the peaks of each corrugated panel 41 are connected to the valleys of adjacent corrugated panels 41. In this case, the water barrier layer 4 ensures a good ventilation effect while having a certain strength, based on the structural characteristics of the corrugated plate 41.

In one embodiment, the water guard layer 4 is made of a hydrophilic material. Based on the characteristics of the hydrophilic material, the water retaining layer 4 can realize stronger water absorption and improve the water retaining capability.

In one embodiment, the corrugated plate 41 is made of a plant fiber material sintered with resin. Under the condition, based on the technical characteristics of the corrugated plate, the water retaining layer 4 has good mechanical strength and water immersion stiffness, and can ensure that the corrugated plate is not easy to deform.

In one embodiment, the hydrophilic material comprises plant fibers. The plant fiber has good hydrophilicity, and when the air flow with the water drops is passed through the water retaining layer 4 made of the plant fiber, the water drops in the air flow can be sufficiently absorbed, thereby reducing the corrosion of the water drops to the housing 2 and the exhaust device 3.

In one embodiment, the hydrophilic material is polyvinyl chloride. The water retaining layer 4 made of polyvinyl chloride material is more durable.

In one embodiment, the air flow passage is a ventilation through hole distributed in the water blocking layer 4.

In one embodiment, the water barrier layer 4 is made of a non-woven material. The non-woven fabric is composed of oriented or random fibers and has the advantages of air permeability, flexibility, light weight and the like; the water retaining layer 4 made of non-woven fabric material has low price and good filtering function.

In one embodiment, the edge of the water blocking layer 4 is provided with a flange, and the water blocking layer 4 is installed in the housing 2 through the flange, thereby facilitating the disassembly and maintenance of the water blocking layer 4.

In one embodiment, the exhaust 3 is an axial fan. The axial flow fan generates stronger airflow and has good exhaust effect, thereby making up the obstruction of the water retaining layer 4 to the airflow to a certain extent.

The exhaust/gas discharge device 3 is not limited to an axial flow fan, and may be a centrifugal fan or the like.

In one embodiment, the heat exchanger 6 comprises a multi-layer serpentine heat exchange coil made of aluminum alloy or stainless steel tubing. Specifically, the heat exchange coil is inclined in the direction of flow of the gaseous refrigerant.

In one embodiment, a float valve 54 is provided in the water collection tray 53. During the condensation process, water is continuously consumed, and when the water level in the water collecting tray 53 is too low, the ball float valve 54 automatically opens to supplement the cooling water. Specifically, the float valve 54 may be an electric float valve.

As shown in fig. 3, a second aspect of the present invention provides a refrigeration system, which includes an indoor unit 7, an outdoor unit 8, a compressor, and a throttling element, wherein the outdoor unit 8 is connected to the evaporative condenser 1 through a refrigerant pipeline. In particular, the refrigerant line is provided with a shut-off valve 9.

Because the refrigerating system of the utility model conveys the refrigerant of the outdoor unit 8 to the evaporative condenser 1, the secondary cooling of the refrigerant is realized; the condensing temperature of the evaporative condenser 1 changes with the wet bulb temperature, and the wet bulb temperature is generally 6 ℃ to 8 ℃ lower than the dry bulb temperature, which means that the condensing temperature of the refrigeration system can be reduced by 6 ℃ to 8 ℃ by using the evaporative condenser 1 in the same environment, thereby improving the refrigeration energy efficiency ratio. The utility model discloses a refrigerating system maintains that maintenance is convenient, the running cost is low.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. An evaporative condenser is characterized by comprising a shell, and an exhaust device, a water retaining layer, a spraying device and a heat exchanger which are sequentially arranged on the shell from top to bottom, wherein the water retaining layer comprises a plurality of corrugated plates; the corrugated plates are sequentially connected along the extension direction of the plane where the water retaining layer is located, and an airflow passage is formed between every two adjacent corrugated plates.

2. The evaporative condenser, as recited in claim 1, wherein the wave crests of each of said corrugated plates are connected to the wave troughs of the adjacent corrugated plates.

3. The evaporative condenser, as recited in claim 1, wherein the water-blocking layer is made of a hydrophilic material.

4. The evaporative condenser, as recited in claim 3, wherein the hydrophilic material comprises plant fiber.

5. The evaporative condenser, as recited in claim 1, wherein the corrugated plate is made of plant fiber by resin sintering.

6. The evaporative condenser, as recited in claim 1, wherein the water-blocking layer is made of a non-woven fabric material.

7. The evaporative condenser as recited in any one of claims 1 to 6, wherein an edge of the water-blocking layer is provided with a flange, and the water-blocking layer is mounted in the housing through the flange.

8. The evaporative condenser, as recited in any one of claims 1 to 6, wherein the exhaust means is an axial fan.

9. A refrigeration system comprising the evaporative condenser according to any one of claims 1 to 8, further comprising an indoor unit, an outdoor unit, a compressor, and a throttle member, wherein the outdoor unit is connected to the evaporative condenser through a refrigerant pipe.

Images