JP2012117778A - Module, refrigerating air conditioner, and module assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a module configured to achieve reduction in size and weight, satisfactory maintainability when continuously installed, enhancement of assembling productivity in works and expansion of installation flexibility of devices, to provide a refrigerating air conditioner and to provide a module assembling method.SOLUTION: An element is constituted of a device group constituted of a compressor 1, an evaporator 3, a condenser 6, a pressure reducing device, sensors and a controller 2 for control, refrigerant piping connecting the devices, wiring used for the controller 2 for control and a device group support base 9 mounted with the device group, the refrigerant piping and the wiring and having a tray-like shape. The module is constituted of an outer frame capable of housing the element and an element taking in/out guide 10 fixed on a prescribed position of the inner surface of the outer frame and mounted with the element, which is freely loaded/unloaded in a prescribed direction. The device group is highly densely arranged so that the size of the device group support base 9 has a prescribed lower limit value, and the length of the refrigerant piping connecting individual devices constituting the device group and the size of the outer frame match the size of the device group support base.

Description

  The present invention relates to a module for storing equipment for a refrigeration cycle including a compressor and a heat exchanger, a refrigeration air conditioner including the module, and a module assembling method. Related to improvements.

Comparison of conventional refrigeration and air-conditioning systems in which devices such as compressors, heat exchangers, etc., and refrigerant circuits connected by piping are housed in a substantially rectangular parallelepiped housing (hereinafter also referred to as a cabinet or module). A small-sized air-cooled chiller or water-cooled chiller can be connected to the installation place by connecting modules in the width direction or depth direction continuously in units of modules (those that incorporate a refrigeration cycle or heat pump cycle in one cabinet). The thing which can select the suitable direction and the number of connection is disclosed (for example, refer patent document 1).
In a relatively large refrigeration air conditioner, a casing (hereinafter also referred to as a casing or a module) and a plurality of water-cooled heat pump units (hereinafter referred to as a machine room) that can be taken out and stored in parallel with the casing. In this water-cooled heat pump unit, a plurality of compressors, an air heat exchanger, a water heat exchanger, a pressure reducing mechanism, and a frame (hereinafter referred to as equipment when these are called alone) And the like, a compressor is divided into upper and lower parts, a water heat exchanger is provided in the casing, and a refrigeration air conditioner configured to be freely connected to and separated from the heat source introduction pipe and the heat source water discharge pipe is disclosed (for example, , See Patent Document 2).

Japanese Patent Application Laid-Open No. 2003-279074 (first page to second page, FIGS. 4 to 5 and FIGS. 7 to 11) JP 2007-139262 A

However, the conventional refrigeration and air-conditioning apparatuses shown in Patent Document 1 and Patent Document 2 are large in size, and one module is about 1000 kg in weight. There was a problem that difficult maintenance was difficult.
In addition, the height of one module is usually about 2.0 m, and there is a problem that the route for carrying in the equipment when installing the module is limited (for example, it cannot be placed in an 11-seater elevator) In some cases, a refrigeration air conditioner is configured with a single module, but as shown in FIG. 13, a plurality of modules are connected to each other to form a refrigeration air conditioner. There was a problem that it was necessary to ensure.
Further, in the conventional refrigeration air conditioner disclosed in Patent Document 1, as shown in FIG. 14, the compressor 1, the control unit 2, the water heat exchanger (evaporator) 3, and the water heat exchanger (condenser) 6 are frames. 13, the cold water pipes 4 and 5 are fixed to the water heat exchanger (evaporator) 3, and the cooling water pipes 7 and 8 are fixed to the water heat exchanger (condenser) 6. When a plurality of modules are continuously connected as shown in FIG. 15 to form a refrigerating and air-conditioning apparatus, as shown in FIG. 15, modules located in the middle of the plurality of modules (in the example of FIG. 15, three modules 100 When the devices in the module 200) are connected to each other and are located in the middle of these, it is necessary to pull out the module 200 as a whole, that is, to pull out the entire heavy module forward. Yes, withdraw There is a problem that time-consuming to work.
In addition, special equipment and preparation are required for maintenance, and there is a problem that maintenance is poor.
Further, in the conventional refrigeration and air-conditioning apparatus disclosed in Patent Document 2, it is possible to downsize and pull out only the machine room, but when pulling out the machine room, the machine room itself having a metal frame is used. There is a problem that it is necessary to pull out in a connected state, and there is a problem that the size is large and the weight is considerably heavy, and it is difficult to install and carry in the equipment.
In addition, in the maintenance when multiple conventional water-cooled chiller modules are installed in the horizontal direction, it is conventionally necessary to pull out the entire module to the front, and it is necessary to secure a space for drawing out the device in advance. There was a problem that the installation space becomes large.
In addition, the conventional water-cooled chiller is assembled in the factory, and when installing the necessary parts, the parts are installed in order from the top, so the assembly work to install the module frame and the brazing of the refrigerant piping -There is a problem that workability is poor because assembly work is mixed and each work needs to be set up each time.

  The present invention has been made to solve the above-described problems, and realizes good maintainability in a module unit for continuously installed modules, improvement of assembly productivity in a factory, and An object of the present invention is to provide a module that increases the degree of freedom of equipment installation, a refrigeration air conditioner including the module, and a module assembly method.

  The module according to the present invention includes a first heat exchanger that exchanges heat with a first medium and cools the first medium, and a second heat that exchanges heat with the second medium and heats the second medium. Exchanger, compressor for compressing refrigerant, pressure reducing device for controlling the amount of refrigerant discharged from the second heat exchanger, sensors and control devices for detecting temperature and pressure (hereinafter referred to as equipment when these are called alone) Device group composed of a first heat exchanger, a second heat exchanger, a refrigerant pipe connecting the compressor and the decompression device, wiring used in the device group, a device group, and a refrigerant A device group support base on which piping and wiring are placed, and an element entry / exit guide for placing an element composed of the device group and the device group support base in a predetermined direction so as to be freely put in and out.

According to the present invention, since the element composed of the device group and the device group support base is placed on the element entry / exit guide that can be taken in and out in a predetermined direction, it is easy to carry and carry in module units, and the carry-in route And the degree of freedom of installation location is expanded. In addition, no installation work is required, and quick installation and quick maintenance are possible.
In addition, since the device group, which is the smallest unit making up the module, is grouped together with the device group support base as an element, even when modules are connected, modules placed in the middle can be pulled out to the front in element units. Since it is not necessary to pull out the whole, the maintenance becomes easy, and the maintenance time and cost can be greatly reduced.

It is a schematic diagram of the refrigerating and air-conditioning apparatus in Embodiment 1 of the present invention. It is a figure which shows the refrigerant circuit of the refrigerating air conditioning apparatus in Embodiment 1 of this invention. It is a perspective view which shows schematic structure of the element of the refrigeration air conditioner in Embodiment 1 of this invention. It is a figure which shows the mounting condition of the element in Embodiment 1 of this invention. It is the schematic at the time of connecting the module in Embodiment 1 of this invention in the horizontal direction. It is an image figure which shows the condition at the time of the maintenance in Embodiment 1 of this invention. It is a figure which shows the schematic assembly procedure of the refrigeration air conditioner in Embodiment 1 of this invention. It is a side view which shows the state which removed the exterior panel of the refrigeration air conditioner in Embodiment 2 of this invention. It is a figure which shows the general | schematic assembly procedure of the refrigeration air conditioner in Embodiment 2 of this invention. It is a side view which shows the state which removed the exterior panel of the refrigeration air conditioner in Embodiment 3 of this invention. It is a side view which shows the state which removed the exterior panel of the refrigeration air conditioner in Embodiment 4 of this invention. It is a side view which shows the state which removed the exterior panel of the refrigeration air conditioner in Embodiment 5 of this invention. It is a side view which shows the state which removed the exterior panel of the refrigeration air conditioner in Embodiment 6 of this invention. It is an external view which shows an external appearance when the conventional refrigeration air conditioning apparatus is installed. It is an internal structure figure which shows roughly the internal structure of the module of the conventional refrigerating air conditioner. It is a general | schematic external view which shows module movement operation at the time of the maintenance of the conventional refrigeration air conditioning apparatus.

Embodiment 1 FIG.
FIG. 1 is an external view showing a state where an exterior panel of the refrigeration air conditioner in Embodiment 1 of the present invention is removed. FIG. 1A is a side view of a refrigerating and air-conditioning apparatus configured with one module, and FIG. 1B is a front view of the refrigerating and air-conditioning apparatus configured with one module. Moreover, FIG.1 (c) is a side view of the refrigerating air conditioner comprised by the module 2 step | paragraph, FIG.1 (d) is a front view of the refrigerating air conditioner comprised by the module 2 step | paragraph.
The refrigerating and air-conditioning apparatus may be composed of a single-stack module as shown in FIGS. 1 (a) and 1 (b), or may be composed of a two-stack module as shown in FIGS. 1 (c) and (d). There is also a case. In general, when the number of stacked modules is n (n is an integer equal to or greater than 1), a module configured by stacking n modules is referred to as an n-stack module. For example, when a module is composed of one stage, it is called a one-stack module, when two modules are stacked, it is called a two-stage module, and when three modules are stacked, a three-stage module Call it. The refrigerating and air-conditioning apparatus may be configured with a single module alone, or may be configured with only a plurality of stacked modules in which two or more modules are stacked. In some cases, a plurality of n (n is an integer of 1 or more) stacking modules are connected in a horizontal direction on a horizontal plane, or a plurality of n (n is an integer of 1 or more) stacking modules are arranged in a horizontal plane. In some cases, the upper vertical direction is connected.

Next, the configuration of the module according to the first embodiment will be described. Both the n-stage stacking module and the connected modules are all based on one single-stage module having the same configuration. Therefore, for the sake of convenience, in the following description, one single-stage module 100 will be described. .
As shown in FIGS. 1 (a) and 1 (b), a one-stage module 100a includes a compressor 1, a controller 2, a water heat exchanger (evaporator) 3, cold water pipes 4, 5, and water heat exchange. It comprises a vessel (condenser) 6, cooling water pipes 7 and 8, a device group support base 9, an element access guide 10, a horizontal frame 11 made of sheet metal, and a column 12 made of sheet metal. In the water heat exchanger (evaporator) 3, heat exchange is performed between the cold water flowing in the cold water pipes 4 and 5 and the refrigerant flowing in the refrigerant pipe (not shown). Similarly, in the water heat exchanger (condenser) 6, heat exchange is performed between the cold water flowing in the cooling water pipes 7 and 8 and the refrigerant flowing in the refrigerant pipe (not shown) as shown in FIG. 1A. The decompression device 51 in FIG. 1A is a portion where the refrigerant that has been heat-exchanged and cooled by the water heat exchanger (condenser) 6 is decompressed and changed from high pressure to low pressure. Although not shown, the cold water side is configured to exchange heat with the indoor air on the user side by another heat exchanger. The cooling water is configured to be cooled by exchanging heat with the outside air by a cooling tower provided on the roof of the building, for example.

  FIG. 2 is a perspective view showing a schematic configuration of elements of the refrigerating and air-conditioning apparatus according to Embodiment 1 of the present invention. As shown in FIG. 2, the element 20 includes a compressor 1, a controller 2, a water heat exchanger (evaporator) 3, a water heat exchanger (condenser) 6, a decompression device (not shown), and various types that constitute a refrigeration cycle. The device group of sensors (temperature sensor, pressure sensor, etc.) is densely arranged, and together with the refrigerant piping connecting each device constituting the refrigeration cycle and the wiring used in the device group, the device group support base 9 It is comprised by mounting in. That is, the element 20 has a configuration in which the device group and the device group support base 9 are combined. As shown in FIG. 1A and FIG. 2, two compressors 1 are installed, and the capacity is doubled by sharing one hydrothermal exchanger 3 and one hydrothermal exchanger 6. The element 20 is reduced in size and weight. As a result, it is possible to reduce the size and weight of the module constituted by the element 20 and to facilitate the transport and carry-in operations at the time of installation. A portion surrounded by a one-dot chain line in FIG. 1A is a portion mounted on the element 20.

Moreover, FIG. 3 is a figure which shows the mounting condition of the element in Embodiment 1 of this invention.
As shown by the wavy line portion 14 shown in FIG. 3, the element entry / exit guide 10 is made of a sheet metal having an L-shaped cross section, and is placed on the bottom surface constituting the outer frame, and the inner surfaces of the pillars 12 on both sides. 1 and is fixed by an element entry / exit guide fixture 13 such as screwing as shown in FIG.
Further, the device group support base 9 is installed in a state of being placed on the element entry / exit guide 10, and the device group support base 9 is placed in a certain direction (for example, the length of the device group support base 9 in FIG. 2). Direction). In this case, it can be pulled out by pushing out the device group support base 9 from the back side, but it can also be pulled out from the front using the edge of the device group support base 9. A sliding mechanism with wheels may be provided to improve sliding, but a simple tape may be attached to reduce the cost.
Further, the water heat exchanger 6 mounted on the element 20 is connected by joints or flanges at connection points 15 and 16 with the water pipe on the facility side, and can be easily removed during maintenance.
During maintenance, it is preferable to provide a stopper on the outer frame in order to prevent the element 20 from moving freely in the direction of entering and exiting due to the influence of vibration or the like.

FIG. 4 shows a schematic view when the two-stage stacking module shown in FIGS. 1 (c) and (d) is connected in the horizontal direction, and FIG. 4 (a) is a front view showing a state where the exterior panel is removed, FIG. 4B is an external view showing a state in which an exterior panel is attached.
As shown in the figure, the modules 100, 200, and 300 are connected using bolts and nuts (not shown).
FIG. 5 is an image diagram showing a situation during maintenance in the first embodiment.
As shown in FIG. 5, when performing maintenance, it is possible to cope by pulling the element 20 forward, and handling of heavy objects as in the prior art becomes unnecessary, so that preparation and time for maintenance work are eliminated. Can be reduced.
FIG. 6 shows a schematic procedure for assembling this module.
(Procedure 1) As shown in FIG. 6 (a), on the equipment group support base 9, the main equipment (compressor 1, water heat exchangers 3, 6 etc.) constituting the refrigeration air conditioner are mounted together. Carry out brazing and wiring work to connect each device.
(Procedure 2) As shown in FIG. 6B, a module 100a is configured by sequentially attaching an element entry / exit guide 10, a horizontal frame 11 constituting an outer frame, and a column 12 to an equipment group support base 9.
Although the minimum unit module 100a can be configured as described above, the following procedure is further required when the two-stage stacked module 100b is configured.
(Procedure 3) As shown in FIG. 6C, the two modules 100a created by the procedure 1 and the procedure 2 are stacked in two stages in the vertical direction to constitute a two-stage stacked module 100b.
By assembling in accordance with the above procedure, the operations of Procedure 1 to Procedure 2, that is, the brazing operation of the refrigerant pipe necessary when the element 20 is assembled, the wiring operation when the controller 2 is attached, and the outer frame constituting the module 100a By performing the work of attaching the element 20 separately, it is possible to increase the efficiency of the assembly work, and it is possible to produce equipment at a low cost.

Embodiment 2. FIG.
In the first embodiment, a case has been described in which a single-stage stacked module is stacked in a vertical direction to form a multi-stage module. In this case, the horizontal frames constituting the outer frame overlap. Therefore, the horizontal frame may be omitted. In the second embodiment, such a case will be described.
FIG. 7 is a side view showing a state in which the exterior panel of the refrigeration air-conditioning apparatus according to Embodiment 2 of the present invention has been removed. The difference from FIG. 1 in that a column 12A extending in the vertical direction is used instead of the column 12 used in FIG. The element 20 is connected vertically to the pillar 12A, and the pillar 12A is made common. Thereby, the cost reduction of a module can be aimed at.
In the second embodiment, the device group support base 9 and the element entry / exit guide 10 are temporarily fixed by the element entry / exit guide fixture 13.

Next, FIG. 8 shows an assembling procedure in this embodiment.
(Procedure 1) As shown in FIG. 8 (a), main devices (compressor 1, water heat exchangers 3, 6, etc.) constituting the refrigeration air conditioner are collectively mounted on the device group support base 9. Thus, a brazing operation and a wiring operation for connecting the respective devices are performed.
(Procedure 2) As shown in FIG. 8B, the element entry / exit guide 10 is temporarily attached to the device group support base 9, and is installed on a horizontal frame 11 configured in the shape of a rectangular base.
(Procedure 3) As shown in FIG. 8C, the four pillars 12A and the element entry / exit guide 10 are fixed using the element mounting jig 17 that occupies the space area of almost one element.
(Procedure 4) The upper element 20a assembled by the procedure 1 and the procedure 2 is assembled into the equipment group support base 9 from above, and a column is assembled.
(Procedure 5) By removing the mounting jig 17 as shown in FIG. 8 (d), installing the upper element 20a assembled in Procedure 4 on the lower element 20b assembled in Procedure 2, and attaching the upper horizontal frame Assemble the module 100c.
According to the present embodiment, as in the first embodiment, it is possible to increase the efficiency of assembly work, and it is possible to produce equipment at low cost.

Embodiment 3 FIG.
In the first and second embodiments, the example in which the modules are stacked in two stages in the vertical direction has been described. However, the present invention is not limited to this, and may be stacked in three or more stages from the viewpoint of ease of maintenance and space saving. Needless to say.
FIG. 9 shows an example in which a three-stage stacking module 100d is configured by connecting three one-stage modules described in Embodiment 1 in the vertical direction.

Embodiment 4 FIG.
FIG. 10 shows an example in which the module 100e is configured by connecting three elements described in the second embodiment in the vertical direction and using a common column to reduce costs.

Embodiment 5 FIG.
FIG. 11 shows an example of a refrigeration air conditioner configured by connecting two first-stage modules 100a in the horizontal direction.
In the present embodiment, the height direction of the module can be reduced to about ½, and it is possible to install the device in a space where the height cannot be secured, which could not be installed conventionally.

Embodiment 6 FIG.
FIG. 12 shows an example of a refrigeration air conditioner configured by connecting three first-stage modules 100a in the horizontal direction.
In the above example, the water-cooled refrigerating and air-conditioning apparatus has been described. However, the present invention is not limited to this, and a heat exchanger that performs heat exchange between water and refrigerant is replaced with a heat exchanger that performs heat exchange between air and refrigerant. However, the same effect can be obtained.

  1 compressor, 2 control controller, 3 water heat exchanger (evaporator), 4 chilled water piping, 5 chilled water piping, 6 water heat exchanger (condenser), 7 cooling water piping, 8 cooling water piping, 9 equipment group support Base, 10 Element access guide, 11 Horizontal frame, 12 columns (outer frame), 12A column, 13 Element access guide fixture, 14 Wavy line portion, 15 Connection point with facility side water piping, 16 Facility side water Connection point with piping, 17 element mounting jig, 20 element, 20a upper element, 20b lower element, 51 decompression device, 100 module, 100a (1 stack) module, 100b 2 stack module, 100c module (2 elements) Stacking), 100d 3 stacking module, 100e module (element stacking 3).

Claims (13)

A first heat exchanger that exchanges heat with the first medium and cools the first medium, a second heat exchanger that exchanges heat with the second medium and heats the second medium, and a refrigerant A compressor that compresses, a decompression device that controls the amount of refrigerant discharged from the second heat exchanger, a sensor group that detects temperature and pressure, and a device group that includes a control device;
Refrigerant piping connecting the first heat exchanger, the second heat exchanger, the compressor, and the pressure reducing device;
Wiring used in the device group;
A device group support for mounting the device group, the refrigerant pipe and the wiring;
A module, comprising: an element entry / exit guide for detachably placing an element including the device group and the device group support base in a predetermined direction.   The module according to claim 1, wherein the device group support base includes a plurality of compressors, and the plurality of compressors share the first heat exchanger and the second heat exchanger. It has an exterior panel that covers the top, side, front, and back, respectively, and includes a housing that houses the element,
The exterior panel is detachably provided in the direction of taking in and out,
3. The module according to claim 1, wherein the element is pushed out to the opposite side when an external force pushed from the back side to the front side acts on the device group. 4. It has an exterior panel that covers the top, side, front, and back, respectively, and includes a housing that houses the element,
The exterior panel in the entrance / exit direction is detachably provided,
3. The module according to claim 1, wherein the element is pulled out in the one direction by an external force acting to pull the device group support base from the back side to the front side. Multiple elements,
An outer frame that supports the panel of the housing;
The outer frame includes a plurality of pillars extending in the vertical direction,
An element entry / exit guide fixed at a plurality of predetermined positions in the vertical direction of the column;
The module according to any one of claims 1 to 4, wherein the plurality of elements are respectively placed on the plurality of stages of element entry / exit guides.   The inlet / outlet of the first heat exchanger and the inlet / outlet of the second heat exchanger are connected at one end by a joint connecting to an external pipe or the other end of the flange, and can be detached from the pipe at the time of maintenance. A module according to any one of the preceding claims.   The said 1st medium is the cold water used for a utilization side, and the said 2nd medium is a cooling water for exhausting heat to outside air, The Claim 1 characterized by the above-mentioned. module.   The module according to claim 1, wherein the first medium is cold water used on a use side, and the second medium is outside air.   A refrigerating and air-conditioning apparatus obtained by stacking n modules (n is an integer of 2 or more) in the vertical direction.   A refrigerating and air-conditioning apparatus comprising the module according to claim 1 continuously connected in a vertical direction and a horizontal direction in a horizontal plane.   A refrigerating and air-conditioning apparatus comprising: n modules stacked in the vertical direction and n modules stacked in the vertical direction (n is an integer of 2 or more). . A first step of placing the device group and piping according to claim 5 on a first device group support, and performing a brazing operation and a wiring operation to create a first element;
A second step of configuring a one-stack module by sequentially attaching an element entry / exit guide, a horizontal frame constituting an outer frame, and a pillar to an equipment group support base;
A third step of stacking the two one-stage stacked modules created by the first step and the second step into n (n is an integer of 2 or more) in the vertical direction to constitute an n-stage stacked module; A module assembly method comprising: A first step of placing the device group and piping according to claim 6 on a first device group support base, and performing a brazing operation and a wiring operation to create a first element;
The element entry / exit guide is temporarily attached to the device group support base of the first element created in the first step, and is installed on the lower horizontal frame configured in the shape of a rectangular base to create the first block. A second step;
A third step of fixing the four pillars and the element entry / exit guide using an element mounting jig that occupies a space area of almost one element;
It is performed during the period from the first step to the completion of the third step, and the device group and the piping according to claim 6 are placed on a second device group support base, brazing work and wiring An element creation process for performing the work to create the second element;
The second element created in the second element creation step is placed on the second element entry / exit guide fixed and fixed to the pillar in the third step, and fixed by brazing or the like. A fourth step comprising two blocks;
A module assembling method comprising: a fifth step of removing the jig from the second block, covering the first block created in the second step, and attaching an upper frame to the pillar. .

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